CN102934359B - Multifunctional touching and/or proximity sense - Google Patents
Multifunctional touching and/or proximity sense Download PDFInfo
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- CN102934359B CN102934359B CN201080055949.1A CN201080055949A CN102934359B CN 102934359 B CN102934359 B CN 102934359B CN 201080055949 A CN201080055949 A CN 201080055949A CN 102934359 B CN102934359 B CN 102934359B
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- 238000001514 detection method Methods 0.000 claims abstract description 39
- 230000005684 electric field Effects 0.000 claims abstract description 25
- 230000001808 coupling Effects 0.000 claims description 23
- 230000005611 electricity Effects 0.000 claims description 12
- 238000010168 coupling process Methods 0.000 claims description 10
- 238000005859 coupling reaction Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims 1
- 210000004247 Hand Anatomy 0.000 description 31
- 210000003811 Fingers Anatomy 0.000 description 14
- 230000000875 corresponding Effects 0.000 description 5
- 238000005286 illumination Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 210000003813 Thumb Anatomy 0.000 description 1
- 230000001413 cellular Effects 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 230000000977 initiatory Effects 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
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Abstract
The present invention provides a kind of sensor device, comprising: at least one first sensor element, it is used for detecting touch and/or close, it is configured to capacity sensor element and it includes the first electrode structure, described first electrode structure includes emission electrode (SE) and receives electrode (EE), and the first alternating electric field wherein launched by described emission electrode can be coupled in described reception electrode；At least one second sensor element (FE)；And apparatus for evaluating (A), it couples with at least one first sensor element described and with at least one second sensor element described, wherein said apparatus for evaluating is configured at least one secondary signal (S2) assessed the first signal (S1) tapped from the described reception electrode of described first sensor element and provided by described second sensor element, and produces at least one detection signal according to described assessment.
Description
Technical field
The present invention relates to sensor device and for the method providing detection signal.Detection signal can be used for controlling electric device
Unit state.
Background technology
From sensor device known in the art, it can such as be arranged on handheld apparatus, in order to detects measurement quantitatively
Parameter.For example, it is known that infrared sensor is provided in the mobile phone in the region of microphone, can be by described red
Outer sensor detects the distance of object.Therefore, the mobile phone distance away from ear can such as be detected.According to described distance,
The display of mobile phone can be turned on and off subsequently.
In the aspect that infrared sensor can be seen from the outside, this is disadvantageous, because at least detector must be arranged in shifting
The surface of mobile phone.Therefore, the probability of the design of mobile phone is restricted.If it addition, mobile phone is actual
It is positioned at ear on or if infrared sensor or detector are not covered by (such as) hands, then it cannot be reliably detected.
Summary of the invention
The purpose of the present invention
Therefore, it is an object of the invention to provide a kind of sensor device, it at least partly avoids shortcoming known in the art.
Solution according to the present invention
According to the present invention, this purpose by sensor device and by according to independent claims for providing detection signal
Method realizes.The advantageous embodiment of the present invention and improvement indicate in the dependent claims.
Therefore it provides a kind of sensor device, comprising:
-at least one first sensor element, it is used for detecting touch and/or close, and it is configured as capacitive sensor
Element and it include the first electrode structure, described first electrode structure include emission electrode and receive electrode, wherein by described
The first alternating electric field that emission electrode is launched can be coupled in described reception electrode；
-at least one second sensor element, and
-apparatus for evaluating, its with at least one first sensor element described and with at least one second sensor element coupling described
Closing, wherein said apparatus for evaluating is configured to assess first tapped from the described reception electrode of described first sensor element
Signal and at least one secondary signal provided by described second sensor element, and produce at least one according to described assessment
Individual detection signal.
In this way, such as, can change the operator scheme of electric device, its depend not only on described device touch and/or with
The nearness of described device, and also depend on other sensor values.Advantageously, may significantly improve especially electronic hand
The ergonomics of dynamic device.
First electrode structure can include that compensating electrode, wherein said apparatus for evaluating include for described emission electrode supply the
One alternate electrical signal and for supplying the signal projector of the second alternate electrical signal to described compensating electrode, and wherein by described
The second alternating electric field that compensating electrode is launched can be coupled in described reception electrode.
Therefore, by emission electrode, receive electrode and the compensating electrode suitable layout on handheld apparatus, can be especially
Favourable mode realizes the detection of the encirclement about hands handheld device.
Compensating electrode can substantially be arranged in emission electrode and receive between electrode.
Second alternate electrical signal can have phase contrast with the first alternate electrical signal.
First sensor element can include that the second electrode structure, described second electrode structure include many fields sensing electrode, its
Described in receive electrode, described emission electrode, described compensating electrode and described field sensing electrode relative to each other cloth in such manner
Put so that
-described first alternating electric field launched by described emission electrode may also couple at least in the sensing electrode of described field
In person, and
-described second alternating electric field launched by described compensating electrode can substantially be coupled only in described reception electrode,
Wherein said apparatus for evaluating is configured to assess the 3rd signal of at least one tap from the sensing electrode of described field.
Sense electrode by described field, can substantially expand the observation area of capacity sensor element at handheld apparatus,
The most also ensure only the close of described field sensing electrode to be not result in detection, because only being launched at emission electrode
Alternating field by hands coupling show up sensing electrode in time just reach about to field sense electrode close detection, described coupling
Close the capacitive couplings sensing the expansion between electrode corresponding to emission electrode and field.
The amplitude of the first alternate electrical signal can be more than the amplitude of the second alternate electrical signal.
The object change close to the level that may result in from the first signal receiving electrode tap to the first electrode structure, described
Level changes close to the first electrode structure of denoted object.
Object to the second electrode structure extra close at least one the 3rd signal that may result in from field sensing electrode tap
The change of level, wherein the level of the 3rd signal changes denoted object close to the first electrode structure and the second electrode structure two
Person.
Auxiliary electrode can be assigned at least one in the sensing electrode of field, wherein said auxiliary electrode can with current system or
Capacitive way couples with at least one field sensing electrode.
Described second sensor element can include position sensor, acceleration transducer, photoelectric sensor and temperature sensor
In at least one.
The present invention also provides for a kind of method for providing detection signal, wherein
-the first signal taps from the reception electrode of first sensor element, and wherein said first sensor element is configured as electricity
Capacitive pick-up element and include the first electrode structure, described first electrode structure includes emission electrode and described reception electricity
Pole, the first alternating electric field wherein launched by described emission electrode is coupled in described reception electrode,
-assess described first signal,
The secondary signal that-assessment provides from the second sensor element, and
-producing detection signal, it depends on the first assessed signal and the secondary signal assessed.
First sensor element can include that the second electrode structure, described second electrode structure include many fields sensing electrode, its
In
-described first alternating electric field launched by described emission electrode is coupled at least one sensing electrode,
-at the sensing electrode of at least one field, detect the 3rd signal, and
-assess described 3rd signal,
Wherein said detection signal depends on the 3rd assessed signal.
First electrode structure includes compensating electrode, wherein supplies the first alternate electrical signal and to described benefit to described emission electrode
Repay electrode and supply the second alternate electrical signal.
Second alternate electrical signal can have phase contrast with the first alternate electrical signal.
Described reception electrode, described emission electrode, described compensating electrode and described field sensing electrode are the most relative to each other
Arrange so that the second alternating electric field launched by described compensating electrode is substantially coupled only in described reception electrode.
A kind of method also providing for unit state for controlling electric device, wherein from by for providing detection signal
The detection signal that method provides obtains control information, and described control information is used for controlling unit state.
Described control information can be including (for example):
The space situation of-device,
Lighting condition in the environment of-device, or
Temperature in the environment of-device or the temperature in unit.
It addition, the present invention provides a kind of electric hand device, it includes according to sensor of the invention device.
The electrode of the first electrode structure can be arranged on described handheld apparatus in such manner so that encloses hand-held dress at handbag
In the case of putting, hands covers these electrodes at least in part.
Described electric hand device can include at least mobile phone, for game console input link, portable decline
Type computer, head phone, computer mouse and remote controller.
Accompanying drawing explanation
The specific embodiment of other details of the present invention and characteristic and the present invention is produced by with the graphic following description being associated
Raw.All figures are shown:
The electrode of Fig. 1 capacity sensor element is arranged；
The effect that the electrode of Fig. 2 Fig. 1 is arranged and health is arranged close to the electrode on the field wire in capacitive character near field；
Fig. 3 has the square frame diagram of the possible embodiment according to sensor of the invention device of acceleration transducer；
The layout of the electrode according to sensor of the invention device on Fig. 4 electric hand device；
Fig. 5 about the some detection signals according to sensor of the invention device in electric hand device assessment should
Use example；
Fig. 6 a, b have on the electric hand device of two fields sensing electrodes or three field sensing electrodes according to the present invention
The example of layout of electrode of sensor device；
Two signal curves at the sensing electrode of Fig. 7 field, curved needle senses electrode, and one to a finger close to field
Individual curved needle touches the surface of field sensing electrode to a finger；
Fig. 8 is from the signal curve of Fig. 7, but senses in electrode in the field being assigned to auxiliary electrode；And
Fig. 9 arranges for the electrode detecting the encirclement at handheld apparatus.
Detailed description of the invention
The operator scheme of capacity sensor element according to the present invention be will be explained in greater detail now.
Fig. 1 shows the cloth of the electrode according to sensor of the invention device on the surface of the such as shell G of handheld apparatus
The example put.The electrode being arranged on the G of surface is formed by two electrode structures.
First electrode structure includes an emission electrode SE, a compensating electrode KE and a reception electrode EE.At figure
In embodiment shown in 1, compensating electrode KE is substantially arranged in emission electrode SE and receives between electrode EE.
Second electrode structure includes four field sensing electrode FE.Field sensing electrode FE arranges relative to the first electrode structure,
Make the alternating electric field WK launched by compensating electrode KE substantially be coupled only to receive in electrode EE, and be not coupled to
In the sensing electrode FE of field.
The reception electrode EE of the first electrode structure is connected to the signal input of apparatus for evaluating or control member.First electrode knot
The emission electrode SE and compensating electrode KE of structure are each supplied to determine the alternation electricity of frequency and amplitude.This alternation electricity
Amount is expressed as alternating signal or alternate electrical signal below.
The alternate electrical signal being supplied to emission electrode SE has substantially frequency between 50kHz and 300kHz.Preferably
, it is supplied to the alternate electrical signal of emission electrode SE to have the frequency between 75kHz and 150kHz.
The alternate electrical signal being supplied to compensating electrode KE preferably shows waveform and the frequency of alternate electrical signal, emission electrode SE
I.e. it is supplied described alternate electrical signal.Alternation electricity to the alternate electrical signal of compensating electrode KE supply with emission electrode SE
Signal has phase contrast.Such as can complete phase shift with the phase shifter, the described phase shifter be arranged in signal generator and emission electrode or
(referring to Fig. 3) between compensating electrode.
Emission electrode SE or be supplied to the alternate electrical signal of emission electrode SE to be configured such that to be launched by emission electrode SE
Alternating electric field WS can be coupled to receive in electrode EE.Compensating electrode KE or be supplied to compensating electrode KE alternation electricity
Signal is configured such that the alternating electric field WK launched at compensating electrode KE may also couple to receive in electrode EE.
Electric with the dephased alternation of alternating electric field WS launched by emission electrode SE by launch at compensating electrode KE
Field WK, passes through phase at the level (it is produced by alternating electric field WS and WK) receiving the alternating electric field of effect at electrode EE
Position superposition (that is, by the phase shift of 180 ° (almost)) and be weakened or erase.
Being coupled in alternating electric field WK and WS at reception electrode EE causes electric current to flow in receiving electrode EE, its
Can be supervised by assessment electronics or assess.This electric current indicates such as hands electric to first to the close of the first electrode structure or hands
The touch of electrode structure.In the case of there is not hands, i.e. when not having hands close to the first electrode structure or when hands does not touches the
During one electrode structure, the electric current flowing through reception electrode EE presents the level being positioned at below predetermined switch level.Only by right
As the first electrode structure is substantial access to by (such as hands), the electric current flowing through reception electrode EE exceedes predetermined switch level,
Make to detect to the first electrode structure is close.
The emission electrode SE of the first electrode structure, compensating electrode KE and reception electrode EE can be arranged in hand-held in such manner
On formula device so that detect and the first electrode structure is touched rather than close to the first electrode structure.About figure
This electrode that 9 are more fully described on handheld apparatus is arranged.
As explained, the field sensing electrode FE of the second electrode structure arranges relative to the first electrode structure in such manner, makes
The alternating electric field WK that must be launched by the compensating electrode KE of the first electrode structure is not coupled to the field sensing of the second electrode structure
In electrode FE.For guaranteeing so, it is supplied to the alternate electrical signal of compensating electrode KE to set in such manner so that
The alternating electric field WK launched at compensating electrode KE is sufficiently small and is not coupled to the field sensing electrode FE of the second electrode structure
In.
In the example of the application according to sensor of the invention device, it is possible to provide the field sensing electrode FE of the second electrode structure
The most also to detect the second electrode structure with contacting of detecting on the first electrode structure of the first electrode structure
Approach or touch.If for this purpose it is proposed, field sensing electrode FE includes less than the reception electrode EE of the first electrode structure
Surface is enough.
The alternating electric field WS launched at the emission electrode SE of the first electrode structure can be coupled to the field of the second electrode structure
In sensing electrode FE.In the case of there is not hands between the first electrode structure and the second electrode structure in observation area,
This capacitive couplings is the least or the least.At sensing electrode FE on the scene, the alternating electric field WS of coupling leads
Send a telegraph stream and flow through field sensing electrode FE, the detection of its available apparatus for evaluating and assessment.For flow through field sensing electrode FE this
Electric current, also can define signal level, wherein exceedes this signal level denoted object and field is sensed the close of electrode FE.
According to sensor of the invention device and arranging according to the electrode of the present invention can use in a particularly advantageous manner with
Enclose handheld apparatus with handbag and the most also detect the close of second hands handheld device.
Fig. 2 shows that electrode represented in Fig. 1 is arranged, the field wire in the most single electrode is affected by health K.Health K
Hands that can be the most close.
At hands K close in the case of the first electrode structure, emission electrode SE couples more to come between electrode EE with receiving
It is the best, because the alternating electric field WS launched at emission electrode SE is partly coupled to reception electrode by close hands K
In EE, and therefore exit the sphere of action of the alternating electric field WK launched at compensating electrode KE.Emission electrode SE with
Receiving this coupling become better and better between electrode EE causes the level flowing through the electric current receiving electrode significantly to become big.Such as figure
Shown in 2, close hands K nearly acts as the bridge for compensating electrode KE.
Emission electrode (on the one hand) and the distance received between electrode or compensating electrode (on the other hand) can be selected in such manner, make
Obtain emission electrode SE and the unavailable single finger of bridge effect received between electrode EE produces.About Fig. 9 in more detail
Describe this to arrange.Emission electrode on handheld apparatus is relative in the corresponding layout receiving electrode, for example, can
Therefore the encirclement of handheld device is reliably detected.
As shown in Figure 2, at health K close in the case of electrode, the emission electrode SE and second of the first electrode structure
Coupling between the field sensing electrode FE of electrode structure also increases.A certain close by health K, exceedes predetermined level
Electric current flow in field plate FE.Exceed this level and may indicate that object (such as hands) is to field sensing electrode and to launching electricity
Pole SE's is close.
In the corresponding layout of the first and second electrode structures on handheld apparatus, hands pair can be reliably detected in this way
The encirclement of handheld apparatus and object (such as, second hands) handheld device close.The electricity of the first electrode structure
Pole can be arranged on described handheld apparatus in such manner so that in the case of being enclosed by handbag, covers at least in part
Emission electrode SE and reception electrode EE.The field sensing electrode of the second electrode structure can be arranged in handheld apparatus in such manner
On so that the hands of its most besieged handheld apparatus covers.Therefore, at second hands close to the hand-held enclosed by handbag
In the case of device, can reliably detect.
Fig. 3 shows that the square frame according to sensor of the invention device illustrates.First electrode structure and the second electrode structure are each
Couple with apparatus for evaluating A.The field sensing electrode FE of the second electrode structure couples with apparatus for evaluating A in such manner, in order to
The signal of telecommunication S3 being adjacent to respective fields sensing electrode FE is transmitted to apparatus for evaluating A.
The reception electrode EE of the first electrode structure couples with apparatus for evaluating A the most in such manner, in order to will receive electrode EE
The signal of telecommunication S1 that place detects is transmitted to apparatus for evaluating.
Compensating electrode KE and the emission electrode SE the most evaluated device A of the first electrode structure supplies alternate electrical signal
WS2 or WS1.Preferably, alternate electrical signal WS1 and alternate electrical signal WS2 has phase contrast.For this purpose it is proposed,
Signal generator G can be provided for producing and providing alternate electrical signal to apparatus for evaluating.Can be by by signal generator G
The alternating signal provided is supplied directly to emission electrode SE.In order to supply alternate electrical signal to compensating electrode KE, can pass through
The phase shifter of compensating electrode KE
The signal that conduction is provided by signal generator.
Apparatus for evaluating A is configured to measure and assess from receiving the signal of telecommunication S1 of electrode EE tap and sensing electrode from field
At least one signal of telecommunication S3 of FE tap.The result assessed as this, apparatus for evaluating A can provide the first detection signal DS1
And/or second detection signal DS2.About object whether detection signal DS1, the DS2 provided by apparatus for evaluating A include
It is positioned at the information in the observation area of the first electrode structure and/or in the observation area of the second electrode structure.Can be such as by detection
Signal is transmitted to the control device of electric hand device, and described control device can be according to institute in detection signal DS1, DS2
Including information correspondingly control electric hand device.
Information included in detection signal DS1, DS2 also can be provided in single detection signal.
Preferably, apparatus for evaluating A is configured to measure individually for each sensing electrode FE or assess feel from field
Survey the signal of telecommunication S3 of electrode FE tap.This has the advantage that many fields sensing electrode can such as be arranged in hand-held dress
That puts is different local so that by the signal of telecommunication S3 of field sensing electrode FE, it may be determined that hands or finger close to which field are felt
Survey electrode FE.By the suitable layout of field sensing electrode, such as at the upside of handheld apparatus, also can be contactlessly
And the profile of the object sensing electrode close to field is determined with good precision.
In an embodiment according to sensor of the invention device, can such as in time division multiplexing method continuously
Assess the signal of telecommunication S3 from field sensing electrode FE tap, as shown for example in figure 3.
In addition to electrode, can have again other sensor according to sensor of the invention device.
For instance, it is possible to provide acceleration transducer (AS), its sensor signal S2 is fed to apparatus for evaluating A.Comment
Estimate device A can be configured such that in such manner according to from receiving electrode EE or the telecommunications from field sensing electrode FE tap
Number S1 and/or S3, and sensor signal S2 provided by acceleration transducer, apparatus for evaluating A provides detection signal,
Described detection signal contains the letter that whether (such as) is touched and the most how handheld apparatus orients about handheld apparatus
Breath.Therefore, enclosed by handbag at mobile phone and close in the case of ear, can detect because incoming call it
After, mobile phone is not only enclosed by handbag, and because after surrounding, the position of mobile phone also changes.Feel together with field
Survey the signal of electrode together, can reach the best accuracy of detection.It is not required here from infrared biography known in the art
Sensor.
Capacitive sensor according to the present invention can provide together with acceleration transducer and/or position sensor, in order to detection
If-at the fate of device holding apparatus, and if device be vertically oriented (referring to Fig. 5), then can will fill
Put in the pattern that is switched to (such as, camera mode).Meanwhile, the context menu of correspondence can be watched over the display.
If-at other district holding apparatus, and if device be a horizontally oriented, then can switch the device into (such as) trip
In play pattern or in E-book reader pattern.
Therefore, by according to how to touch or arrest device and how to orient unit state or the behaviour of setting device according to device
Operation mode.
Or or it addition, may also include photoelectric sensor according to sensor of the invention device, can with touch or close to together with
Assess the sensor signal of described photoelectric sensor.So that it takes up a position, for example, the following can be realized:
Close to device causes device to change into activity pattern from park mode.Meanwhile, can (such as) of opening display
Illumination.In light environment, ratio more clearly sets illumination in dark surrounds.But when device the most certain besieged time,
Also illumination can be opened.For this purpose, it is not necessary to user's being manually entered on device.
Or or it addition, also can provide together with temperature sensor according to sensor of the invention device, with touching or can connect
The nearly sensor signal assessing described temperature sensor together.Therefore, such as the following can be realized:
Close to device causes device to change into activity pattern from park mode.The aobvious of LCD display can be opened simultaneously
Show that device illuminates (the assessed signal that the backlight of LCD display can again depend on photoelectric sensor).If temperature is positioned at pre-
Determine more than ultimate value, then readjust the contrast of temperature sensitivity LCD display.
In addition to mentioned sensor signal, for example, also can together with capacitive sensor evaluation timer
Signal.So that it takes up a position, for example, the following can be realized:
Close and/or to device touch/encirclement to device causes described device to change into activity pattern from park mode.
According to commutator pulse, acoustical signal can be launched on device.Such as, before 10 o'clock of the morning, can launch that " Gu is stepped on
Rub root (Guten Morgen) ", 12 and 6 pm at noon, can launch " Gu steps on Tag (Guten Tag) ", and from
6 pm, " Gu Denga Bender (Guten Abend) " can be launched.
It is certainly not limited thereto the sensor that place is shown according to sensor of the invention device.Described sensor device also can wrap
Containing other sensor element, such as torque sensor, humidity sensor etc..Various sensors can provide individually or be combined in
In sensor device.
Fig. 4 by example show on electric hand device (such as, mobile phone) according to sensor of the invention device
The layout of electrode.In the lower area of handheld apparatus, the emission electrode SE of the first electrode structure is arranged in the left side
In edge district, and the reception electrode EE and compensating electrode KE of the first electrode structure are arranged in right hand edge district.If it is electronic
Enclosed by handbag now at the lower area of handheld apparatus, then emission electrode SE and reception electrode EE is at least partly by hands
Cover.The encirclement of hands handheld device cause emission electrode SE and receive between electrode EE capacitively coupled significantly
Increasing, this situation has an impact flowing through the electric current receiving electrode EE.It is more fully described function about Fig. 2.
In the upper area of electric hand device, arrange the field sensing electrode FE of the second electrode structure.Field sensing
Electrode FE arranges in such manner so that in the case of handbag encloses handheld apparatus, and emission electrode SE senses electrode with field
Capacitive couplings between FE not by appreciable impact or does not significantly improve.
If second hands is now close to field sensing electrode FE, then between emission electrode SE and field sensing electrode FE
Capacitive couplings also significantly improves, and the electric current of this situation convection current again interlude sensing electrode FE has an impact.
The lower area of handheld apparatus is denoted herein as " grasping section (Grip-Zone) ", the upper zone of handheld apparatus
Domain representation is " close to district (Prox-Zone) ".The possible use sight that electrode shown in Fig. 4 is arranged is by following facts
Composition: in the case of a mobile phone, hands can be detected user's ear is connect by encirclement and the mobile phone of mobile phone
Closely.
The encirclement to mobile phone is detected with the help of the emission electrode SE and reception electrode EE of the first electrode structure.Logical
Interlude sensing electrode FE close to ear of detection.By close to ear of mobile phone, emission electrode SE feels with field
The capacitive couplings on user's body surveyed between electrode FE increases always, until field sensing electrode FE is to certain of ear
One distance makes capacitive couplings become the biggest so that the electric current flowing through field sensing electrode FE exceedes predetermined level.
The detection signal provided by apparatus for evaluating A can use the most in such manner so that in the situation of incoming call
Under, mobile phone one is enclosed by handbag, just sets ringing signal, and mobile phone one is held to ear, is just automatically switched off
The illumination of mobile telephone display.
Fig. 5 shows another use sight according to sensor of the invention device in handheld apparatus.First electrode structure
With the electrode of the second electrode structure herein substantially as about Fig. 4 show arrange.Except by according to the present invention
Sensor device provide detection signal outside, the most also assess the position of mobile phone.If hands at lower area and
Both upper areas place touches mobile phone, and mobile phone is positioned substantially on horizontal orientation, then mobile phone can
Such as automatically switch in camera mode.The position of mobile phone such as can be determined with acceleration transducer.
Fig. 6 a and Fig. 6 b shows the two or more example that the electrode according to sensor of the invention device is arranged.At Fig. 6 a
In, emission electrode SE and reception electrode EE is arranged in the lower area of handheld apparatus.Top at handheld apparatus
At the both sides in region, arrange a field sensing electrode FE every time.
In this example, sensing electrode FE in field can be used as conventional mechanical sensing device or the sub of switch.For example,
Sensing electrode FE or be assigned to the detection signal of field sensing electrode FE and can interconnect with the phonebook function of mobile phone.As
Really user encloses mobile phone with handbag now and s/he such as uses thumb to sense electrode FE close to the field on the right or the left side, that
Mobile phone can automatically switch in telephone book mode.
Being combined with application example, as about described by Fig. 5, two field sensing electrode FE also can be at camera mode
Release device it is used as during unlatching.Show that field for this purpose senses the suitably-arranged of electrode FE about Fig. 6 b.
In the case of layout shown in Fig. 6 b of sensing electrode FE on the scene, it be also possible to use the telecommunications of field sensing electrode FE
Number S2 is to improve accuracy of detection further, and (such as) is to call on a cellular telephone.This can pass through at least two field
Sensing electrode FE provides and exceedes the signal of telecommunication of predetermined level every time and reach.
Sensor device illustrated and described here can be additionally used in handheld apparatus (such as, mobile phone), with by it
It is switched to the second operator scheme from the first operator scheme.First operator scheme can for example, park mode, the second operation mould
Formula can be activity pattern.In this way, can obviously reduce the energy expenditure of mobile phone, because mobile phone is only true at it
Real enclosed by handbag or in use time be just in activity pattern.
In another uses sight, also can be disposed in (such as) computer mouse according to sensor of the invention device.The
The electrode of one electrode structure can be arranged at computer mouse in such manner so that the detection encirclement to computer mouse.Can
There is provided field sensing electrode (such as) of the second electrode structure with define left mouse button or the right mouse button close to district
Territory.If computer mouse is not enclosed by handbag, then computer mouse switches in park mode.Due to emission electrode
With the necessary capacitive couplings of field sensing electrode, situations below also can be avoided: only by two field sensing electrodes
One and do not enclosed by handbag, computer mouse is just switched in activity pattern.
In another uses sight, video camera (video camera) can be equipped with according to sensor of the invention device.Therefore,
Such as introducing in the hands region for fixing camera at phase machine frame, can arrange the first electrode structure.In this way, may be used
Whether detection hands is positioned in described frame.In one embodiment of the invention, hands one is positioned in described frame, just can start phase
Machine or the initiating sequence of video camera.In this way, the time needed for starting videograph can significantly shorten.It addition, camera
System can be configured such that when hands is removed from described frame in such manner, subsequently (such as) if video camera stops, that
At least close the display of video camera.
In another embodiment, one or several fields sensing electrode FE can be disposed in video camera, whereby, works as finger
When enough near-earth senses electrode close to corresponding field, the different actions to video camera can be produced.Preferably, these move
Work can be discharged by the field sensing electrode in video camera, and described action is only just produced when hands is positioned in the frame of video camera
Raw.
Fig. 7 is illustrated in close to the shell of (such as) handheld apparatus or senses electrode FE by field in the case of touching housing
The signal curve of the signal of telecommunication.Field sensing electrode FE in this regard is not arranged on the outside of shell G, but cloth
It is placed on the inner side of shell G.Therefore, on the one hand field sensing electrode is independent of outside influences, and on the other hand, field sensing electricity
Pole does not affect the design of housing.
If finger is disposed close to the shell in the region of field sensing electrode FE, then the telecommunications at the sensing electrode FE of field
Number level increase, as shown in the left side of Fig. 7 always.If finger touches case surface G, then the coupling table of finger
Face rapid expansion so that the capacitive couplings between emission electrode SE and corresponding field plate ferrum the most quickly increases.Electric capacity
Property coupling this quick growth cause again the electric current measured by sensing electrode FE on the scene the most quickly to increase.It is usable in field
This quick level of signal measured by sensing electrode FE rises, in order to distinguish and field is sensed the close of electrode FE and touched
Touch field plate.
In order to make the field sensing electrode FE more preferable capacitive couplings to close finger arranged on the inner side of shell G,
Auxiliary electrode HE can be disposed in housing outer surface or immediately below housing outer surface.Fig. 8 showing, this arranges.
Herein, auxiliary electrode HE is relevant to the field sensing electrode FE being arranged on case inside.This can be by auxiliary electricity
Electric current between pole HE with field sensing electrode FE has been connected.Electric current connection has the advantage that auxiliary electrode HE
Need not be arranged to the most relative with field sensing electrode FE.In another embodiment, auxiliary electrode HE senses electrode with field
The coupling of FE is also based on electric capacity and occurs, as shown in Figure 8.Capacitive couplings has the advantage that need not be at shell
Opening is provided to make field sensing electrode FE couple with auxiliary electrode HE on body G.
Signal by comparing with the signal shown in Fig. 7 or signal curve, measured by sensing electrode FE on the scene
Signal level bigger than the situation of close finger, because auxiliary electrode HE sensing on the scene electrode FE and close finger
Between produce more preferable capacitive couplings.Equally, auxiliary electrode HE and finger K is made to contact sensing electrode FE on the scene
The signal level of the signal measured by place has stronger influence, fills because sensing not exist between electrode FE at finger and field
When dielectric shell.Therefore, the coupled surface quickly increased of finger causes measured by sensing electrode FE on the scene
The bigger level of signal rises.Therefore, it can higher precision carry out close to contact between difference.
Can provide close to contact between difference in case (such as) to field sensing electrode close in the case of generation camera
Focusing (referring to Fig. 5), and produce in the case of the touch at sensing electrode on the scene and take pictures.
In fig .9, symbolically show that the electrode of the first electrode structure on handheld apparatus is arranged.Emission electrode SE
It is arranged on the left side of handheld apparatus.Compensating electrode KE and reception electrode EE is arranged on the right side of handheld apparatus,
Wherein receive electrode EE to be arranged in above compensating electrode KE.
In this manner it is possible to detect the encirclement of handheld device in a particularly advantageous manner, and be effectively prevented from about
The only close detection of handheld device.
According in the further embodiment not shown here of sensor of the invention device, the first electrode structure also can have
There are some emission electrodes, some compensating electrodes and/or some reception electrodes.Equally, sensor device also can comprise some
One electrode structure so that (such as) on handheld apparatus, when some first electrode structures are arranged on handheld apparatus,
The encirclement of handheld device can be detected at the zones of different of handheld apparatus.Or, also can detect handheld apparatus is
No enclosed by two handbags or hold.
Handheld apparatus can for example, mobile phone, computer mouse, remote controller, for game console input link,
Portable microcomputer (PDA), head phone etc..Can be also that bigger appliances provide according to the present invention's
Sensor device, the most such as must detect on device touch and detect device simultaneously close.According to the present invention's
Sensor device can operate in a mode so that comments independent of the signal of telecommunication measured by the second electrode structure
Estimate the signal of telecommunication at the first electrode structure.
Claims (21)
1. a sensor device, it includes
At least one first sensor element, it is used for detecting touch and/or close, and it is configured to capacitive sensor
Device element and it include the first electrode structure and the second electrode structure, wherein, described first electrode structure includes arranging
Emission electrode (SE) on the first side wall of the shell of handheld apparatus and be arranged in described shell with described
Reception electrode (EE) on the second sidewall that one sidewall is relative, described emission electrode (SE) the first alternation electricity launched
Field (WS) can be coupled in described reception electrode (EE), and wherein, described second electrode structure includes multiple sensing electricity
Pole (FE), and described first alternating electric field (WS) wherein launched by described emission electrode (SE) may also couple to described
In at least one in field sensing electrode (FE)；
At least one second sensor element (AS)；And
Apparatus for evaluating (A), its with at least one first sensor element described and with at least one second sensor described
Element (AS) couples, and wherein said apparatus for evaluating (A) is configured to assessment from described in described first sensor element
Receive electrode (EE) the first signal (S1) of tapping and provide by described second sensor element (AS) at least one the
Binary signal (S2), and at least one detection signal (DS) is produced according to described assessment.
Sensor device the most according to claim 1, wherein said first electrode structure includes compensating electrode (KE), its
Described in apparatus for evaluating (A) include signal generator (G), supply the first alternation for described emission electrode (SE)
The signal of telecommunication (WS1) and for supplying the second alternate electrical signal (WS2) to described compensating electrode (KE), wherein by described
The second alternating electric field (WK) that compensating electrode (KE) is launched can be coupled in described reception electrode (EE).
Sensor device the most according to claim 2, wherein said compensating electrode (KE) is arranged in described emission electrode
(SE) and between described reception electrode (EE).
Sensor device the most according to claim 2, wherein said second alternate electrical signal (WS2) is handed over described first
Varying electrical signals (WS1) has phase contrast.
Sensor device the most according to claim 2, wherein said reception electrode (EE), described emission electrode (SE),
Described compensating electrode (KE) and described field sensing electrode (FE) are arranged opposite to each other in such manner so that
The capacitive couplings between electrode is sensed relative to described compensating electrode at described compensating electrode (KE) and described field
(KE) and the capacitive couplings of described reception electrode (EE) is insignificant, and
Wherein said apparatus for evaluating (A) is configured to assess at least one tap sensed electrode (FE) from described field
3rd signal (S3).
6. according to the sensor device described in any claim in claim 2-5, wherein said first alternate electrical signal
(WS1) amplitude is more than the amplitude of described second alternate electrical signal (WS2).
Sensor device the most according to claim 1, described first signal wherein tapped from described reception electrode (EE)
(S1) level change close to described first electrode structure of denoted object.
Sensor device the most according to claim 5, described at least wherein tapped from described field sensing electrode (FE)
The change denoted object of the level of individual 3rd signal (S3) is just close to described first electrode structure and described second electrode
Both structures.
Sensor device the most according to claim 5, at least one of which auxiliary electrode (HE) is assigned to the sense of described field
Survey the one in electrode (FE), wherein said auxiliary electrode (HE) can with current system or in a capacitive manner with described extremely
Few field sensing electrode (FE) coupling.
Sensor device the most according to claim 5, described 3rd letter wherein tapped from described field sensing electrode (FE)
Number (S3) can be assessed by time division multiplexing method.
11. sensor devices according to claim 1, wherein said second sensor element (AS) includes position sensing
At least one in device, acceleration transducer, photoelectric sensor and temperature sensor.
12. sensor devices according to claim 1, wherein said sensor device can be disposed at electric hand device
In.
13. 1 kinds are used for the method providing detection signal (DS), comprising:
The first signal (S1), wherein said first sensor element is fed from the reception electrode (EE) of first sensor element
It is configured to capacity sensor element and includes the first electrode structure and the second electrode mechanism, described first electrode knot
Structure includes the emission electrode (SE) being arranged on the first side wall of the shell of handheld apparatus and is arranged in described shell
Second sidewall relative with described the first side wall on described reception electrode (EE), by described emission electrode (SE) send out
The first alternating electric field (WS) penetrated is coupled in described reception electrode (EE), and wherein, described second electrode structure includes
Multiple sensings electrode (FE), and described first alternating electric field (WS) wherein launched by described emission electrode (SE)
May also couple at least one in described field sensing electrode (FE)；
Assess described first signal (S1)；
The secondary signal (S2) that assessment is provided by the second sensor element (AS)；And
Producing detection signal (DS), it depends on assessed the first signal (S1) and the secondary signal (S2) assessed.
14. methods according to claim 13, wherein
The 3rd signal (S3) is tapped from least one field sensing electrode (FE),
Assess described 3rd signal (S3), and
Wherein said detection signal (DS) depends on the 3rd assessed signal (S3).
15. methods according to claim 14, wherein with time division multiplexing method from described field sensing electrode (FE) point
Connect described 3rd signal (S3).
16. methods according to claim 13, wherein said first electrode structure includes compensating electrode (KE), and wherein
Supply the first alternate electrical signal (WS1) to described emission electrode (SE) and supply the second friendship to described compensating electrode (KE)
Varying electrical signals (WS2).
17. methods according to claim 14, are wherein assigned to auxiliary electrode in described field sensing electrode (FE) extremely
Few one, described auxiliary electrode can couple with described field sensing electrode (FE) with current system or in a capacitive manner.
18. methods according to claim 13, wherein said detection signal (DS) instruction health is to described first electrode knot
Structure close, and wherein connecing at the described health described first electrode structure to being arranged in electric hand device
In the case of Jin, described electric hand device is switched to the second operator scheme from the first operator scheme.
19. methods according to claim 18, wherein said first operator scheme is park mode, and wherein said
Two operator schemes are activity patterns.
The electric hand dress that 20. 1 kinds include according to the sensor device described in any claim in claim 1 to 12
Put, the described electrode of wherein said first electrode structure be arranged in such manner described handheld apparatus right side wall and
In bottom section on left side wall so that in the case of handbag encloses described handheld apparatus, described hands is at least part of
Ground covers these electrodes.
21. electric hand devices according to claim 20, wherein said electric hand device include mobile phone,
Input link, mobile microcomputer, head phone, computer mouse and remote control for game console
At least one in device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009057947A DE102009057947A1 (en) | 2009-12-11 | 2009-12-11 | Multifunctional touch and / or proximity sensor |
| DE1020090579478 | 2009-12-11 | ||
| PCT/EP2010/068884 WO2011069925A2 (en) | 2009-12-11 | 2010-12-03 | Multifunctional touch and/or proximity sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102934359A CN102934359A (en) | 2013-02-13 |
| CN102934359B true CN102934359B (en) | 2016-11-30 |
Family
ID=
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3826979A (en) * | 1972-08-10 | 1974-07-30 | Bosch Gmbh Robert | Capacitive detector device |
| CN1155154C (en) * | 1994-10-25 | 2004-06-23 | 触摸传感器技术有限责任公司 | Capacitive touch sensor |
| CN1711550A (en) * | 2002-11-12 | 2005-12-21 | 皇家飞利浦电子股份有限公司 | Capacitive object sensor |
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3826979A (en) * | 1972-08-10 | 1974-07-30 | Bosch Gmbh Robert | Capacitive detector device |
| CN1155154C (en) * | 1994-10-25 | 2004-06-23 | 触摸传感器技术有限责任公司 | Capacitive touch sensor |
| CN1711550A (en) * | 2002-11-12 | 2005-12-21 | 皇家飞利浦电子股份有限公司 | Capacitive object sensor |
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