CN102360252A - Photoelectric sensing device and implementation method thereof - Google Patents
Photoelectric sensing device and implementation method thereof Download PDFInfo
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- CN102360252A CN102360252A CN2011103141690A CN201110314169A CN102360252A CN 102360252 A CN102360252 A CN 102360252A CN 2011103141690 A CN2011103141690 A CN 2011103141690A CN 201110314169 A CN201110314169 A CN 201110314169A CN 102360252 A CN102360252 A CN 102360252A
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Abstract
The invention discloses a photoelectric sensing device and an implementation method thereof, belonging to the technical field of computer input devices. The device comprises a body, a transmitting tube, receiving devices, a circuit board and a cell unit, wherein the transmitting tube, the receiving devices, the circuit board and the cell unit are contained in the body; the transmitting tube and the receiving devices are electrically connected with the circuit board; the cell unit is electrically connected with the circuit board; a through hole is arranged on the bottom end face of the body; a power button is arranged on the body and controls the cell unit to be turned on; the transmitting tube is installed inside the through hole on the body and transmits infrared rays; the receiving devices are arranged at the two sides of the through hole; and an optical control circuit is arranged on the circuit board. The device has the following beneficial effects: the optical control circuit on the circuit board is utilized to be electrically connected with the transmitting tube and the receiving devices, thus ensuring the computer input device to detect and judge the movement locus of the device; and the device has a simple structure and low cost, is not limited by the working screen and has strong antijamming capability.
Description
Technical field
The present invention relates to computer entry device, especially relate to a kind of photoelectric induction device and its implementation.
Background technology
Photoelectric technology is widely used in fields such as Industry Control, input output device of computer.As use light pen to carry out information typing, optical mouse, infrared electro sensitive switch etc.Occurred in recent years a kind ofly on the computer projection screen, carrying out virtual book through light pen and writing technology and product with computer operation.
Existing optical sensor can sensing light, thus turning circuit, and then cooperate luminescent device, then can accomplish the object detection function.In computer entry device and interaction field, the movement locus of following the tracks of luminous object can be realized the input of computing machine at present.Realize input because whether computer entry device exists through the detection illuminating source, the luminescent control system of illuminating source itself is taked the mode of non-Photoelectric Detection, forms with the light source information that prevents computer system is gathered and disturbs.
Development along with photon blank and interaction technology; Realize computing machine input and mutual device steps release through detecting light spot position; Manufacturer of at present many projectors has also released the interactive projection machine system; But employed light pen of interactive projection machine system or optical indicator generally transmit through button control, perception workplace and transmitting automatically, and this gives to write and makes troubles.The light pen that transmits through the pressure touch-control has also appearred at present; But it is luminous that this kind mode needs press pressure to keep, the disclosed a kind of pressure trigger luminous pen of patented claim CN200510041357.5, the disclosed luminous touch control pen of CN200480034928.6 and use user input device and the disclosed optical hand-writing pen nib of CN01269831.8 of this luminous touch control pen all to adopt the pressure touch-control and luminous.But the light pen structure through the pressure touch-control needs certain pressure ability turning circuit, on flexible working faces such as projection screen, can not write and then can't carry out, and this has limited the application of light pen.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, provide a kind of simple in structure, with low cost, do not receive work screen restriction and strong photoelectric induction device and its implementation of antijamming capability.
For reaching above-mentioned purpose; A kind of photoelectric induction device of the present invention, it comprises body, power valve, receiving trap, circuit board and battery unit, said power valve, receiving trap, circuit board and battery unit are contained in the said body; Said power valve and receiving trap and said circuit board electrically connect; Said battery unit and said circuit board electrically connect, and the bottom face of said body is provided with through hole, and said body is provided with power knob; Said power knob is controlled said battery unit conducting; Said power valve is installed in the through hole inboard of said body and sends IR, and said receiving trap is arranged at said through hole both sides, and said circuit board is provided with light-operated circuit.
Further; Said power valve transmitting terminal is vertically towards said through hole; Said receiving trap oblique cutting is arranged at said through hole both sides, and said body bottom contacts or near reflecting surface, said receiving trap receives the IR signal that reflects through said reflecting surface.
Further, said reflecting surface is flexible curtain.
Further, said body is hollow pen type structure or finger-worn type apparatus structure.
Further; Said light-operated circuit comprises power circuit unit, pulse unit and on-off circuit unit; Said power circuit unit and said pulse unit and said on-off circuit unit electrically connect; Attenuator circuit unit and electronic switch that said pulse unit is provided with oscillation circuit unit, electrically connects with oscillation circuit unit; Said electronic switch and said power valve electrically connect, and said on-off circuit unit and said electronic switch electrically connect, and said electronic switch break-make is handled and controlled in said on-off circuit unit to the IR signal that said receiving trap receives.
Further, said electronic switch is provided with normally closed contact and normally opened contact, and said normally closed contact and said attenuator circuit unit electrically connect, and said normally opened contact and said power circuit unit electrically connect; Said on-off circuit unit electrically connects successively and is provided with amplifier circuit unit, bandpass filtering unit, integrating circuit unit and comparer, and said amplifier circuit unit and said receiving trap electrically connect; Said comparator output terminal and said electronic switch electrically connect, and said comparator input terminal is connected the said electronic switch of said comparator drives with said integrating circuit unit output terminal.
The implementation method of a kind of photoelectric induction device of the present invention comprises the steps:
1., press power knob, said oscillation circuit unit sends a frequency pulse signal, said attenuator circuit unit carries out offering power valve after the attenuation processing with pulse signal and sends this frequency IR signal;
2., said body bottom contact or during near reflecting surface, this frequency IR signal that said power valve sends is received by said receiving trap through the diffuse reflection effect of reflecting surface;
3., this frequency IR signal of receiving of said receiving trap carries out being sent to the bandpass filtering unit after the processing and amplifying in said amplifier circuit unit, said bandpass filtering unit isolates the pulse signal of non-this frequency;
4., this frequency IR signal from the reflecting surface reflection of said receiving trap reception charges to said integrating circuit unit; Through after the very first time section; The output voltage of said integrating circuit unit reaches the forward voltage of comparer; The normally opened contact of the said electronic switch of said comparator drives is connected, and normally closed contact breaks off; This moment, said power valve was connected with said power circuit cell conduction, and said power valve sends strong IR signal;
5., said power valve stops to send this frequency IR signal; Said integrating circuit unit stops to receive the IR signal and discharges, and after second time period, said integrating circuit unit output voltage is lower than comparer when keeping voltage; The normally closed contact of the said electronic switch of said comparator drives is connected; Normally opened contact breaks off, and said power valve stops to send strong IR signal, and then sends this frequency IR signal;
6., repetitive operation step 2.～5.; Said power valve sends this frequency IR signal; Reflecting surface is not left in the body bottom; Said power valve sends this frequency IR signal and strong IR signal in turn in one-period, and computer entry device detects the judgement power valve and launches strong IR signal.
Further, said this frequency IR signal is 37KHz, and the said cycle is the very first time section and the second time period sum.
In sum; A kind of photoelectric induction device of the present invention is through installing power valve, receiving trap and circuit board in body; Receiving trap receives the IR signal that reflects from reflecting surface; Utilize the light-operated circuit on the said circuit board to electrically connect said power valve and receiving trap; And control said power valve and send different IR signals in different time sections, thereby let computer entry device detect judge movement locus of the present invention, simple in structure, with low cost, do not receive the restriction of work screen and antijamming capability strong.The implementation method of a kind of photoelectric induction device of the present invention is through the bandpass filtering cell isolation pulse signal of light-operated circuit; The integrating circuit unit carries out the output voltage of charge or discharge control integrating circuit unit; The forward voltage of the said comparer of said integrating circuit unit output voltage and keep voltage ratio after; And then drive said electronic switch in normally closed contact and normally opened contact turned or disconnection; Thereby control the different IR signal of said power valve emission, movement locus of the present invention can be detected by computer entry device to be judged and the realization writing function.
Description of drawings
Fig. 1 is the structural representation of a kind of photoelectric induction device of the present invention.
Fig. 2 is the theory diagram of light-operated circuit of the present invention shown in Figure 1.
The IR signal waveforms that Fig. 3 sends for power valve of the present invention shown in Figure 1.
Embodiment
For further understanding characteristic of the present invention, technological means and the specific purposes that reached, function, the present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
See also Fig. 1 to Fig. 3; A kind of photoelectric induction device of the present invention comprises body 1, power valve 2, receiving trap 3, circuit board 4 and battery unit 5; Said power valve 2, receiving trap 3, circuit board 4 and battery unit 5 are contained in the said body 1; Said power valve 2 and receiving trap 3 electrically connect with said circuit board 4, and said battery unit 5 electrically connects with said circuit board 4, in order to said circuit board 4 operation power supplys to be provided.Said body 1 is the hollow pen type structure; Also can be designed to the finger-worn type apparatus structure as required; The bottom face of said body 1 is provided with through hole 10, and said body 1 upper surface is provided with power knob 20, and said battery unit 5 conductings of said power knob 20 controls are to provide power supply.
Said power valve 2 is installed in through hole 10 inboards of said body 1, and said power valve 2 sends IR, and said power valve 2 transmitting terminals are vertically towards said through hole 10 places, and the IR that said power valve 2 sends penetrates through through hole 10.
Said receiving trap 3 oblique cuttings are arranged at said through hole 10 both sides, the IR signal that the IR that sends from power valve 2 in order to reception reflects through reflecting surface 30, and said reflecting surface 30 can be flexible curtain.
Said circuit board 4 is provided with light-operated circuit 40; Said light-operated circuit 40 comprises power circuit unit 41, pulse unit 42 and on-off circuit unit 43; Said power circuit unit 41 electrically connects with said pulse unit 42 and said on-off circuit unit 43, in order to the WV of said pulse unit 42 and said on-off circuit unit 43 to be provided.Attenuator circuit unit 422 and electronic switch K that said pulse unit 42 is provided with oscillation circuit unit 421, electrically connects with oscillation circuit unit 421; Said electronic switch K and said power valve 2 electrically connect; Said electronic switch K is provided with normally closed contact K1 and normally opened contact K2; Said normally closed contact K1 and said attenuator circuit unit 422 electrically connect; Said normally opened contact K2 and said power circuit unit 41 electrically connect; Said oscillation circuit unit 421 sends the 37KHz pulse signal, and the 37KHz pulse signal that the 422 pairs of said oscillation circuit units 421 in said attenuator circuit unit send carries out attenuation processing, sends 37KHz IR signal in order to said power valve 2 to be provided.
Said on-off circuit unit 43 electrically connects successively and is provided with amplifier circuit unit 431, bandpass filtering unit 432, integrating circuit unit 433 and comparer 434; Said amplifier circuit unit 431 electrically connects with said receiving trap 3, carries out processing and amplifying in order to the IR signal that said receiving trap 3 is received; Said bandpass filtering unit 432 allows the pulse signal of 37KHz frequency range to pass through; The IR signal that said receiving trap 3 receives charges to said integrating circuit unit 433 after through Filtering Processing, and the output voltage of said integrating circuit unit 433 changes thereupon; Said comparer 434 output terminals and said electronic switch K electrically connect; Said comparer 434 is provided with forward voltage and keeps voltage; Said comparer 434 input ends are connected with said integrating circuit unit 433 output terminals; Said forward voltage and keep voltage and integrating circuit unit 433 output voltages compare; Said comparer 434 drives said electronic switch K conducting between normally closed contact K1 and normally opened contact K2, and then controls the connecting and disconnecting of the circuit of said power circuit unit 41 and said power valve 2.
The present invention presses power knob 20; Said oscillation circuit unit 421 sends the 37KHz pulse signal; Said attenuator circuit unit 422 carries out offering power valve 2 after the attenuation processing with the 37KHz pulse signal and sends 37KHz IR signal; Said body 1 bottom contact or during near reflecting surface 30; The 37KHz IR signal that said power valve 2 sends is received by said receiving trap 3 through the diffuse reflection effect of reflecting surface 30, is sent to bandpass filtering unit 432 the 37KHz IR signal that said receiving trap 3 receives carries out processing and amplifying in said amplifier circuit unit 431 after, and the pulse signal of the 432 pairs of non-37KHz frequency ranges in said bandpass filtering unit is isolated; The 37KHz IR signal from reflecting surface 30 reflections that said receiving trap 3 receives charges to said integrating circuit unit 433; Said integrating circuit unit 433 output voltages reach the forward voltage of comparer 434, and the normally opened contact K2 that said comparer 434 drives said electronic switch K connects, and normally closed contact K1 breaks off.This moment, said power valve 2 was connected with 41 conductings of said power circuit unit, and said power valve 2 sends strong IR signal, detected for computer entry device and judged movement locus of the present invention.Simultaneously, said power valve 2 stops to send 37KHz IR signal, and said integrating circuit unit 433 stops to receive the IR signal and discharges; When said integrating circuit unit 433 output voltages are lower than comparer 434 and keep voltage; The normally closed contact K1 that said comparer 434 drives said electronic switch K connects, and normally opened contact K2 breaks off, and said power valve 2 stops to send strong IR signal; And then send 37KHz IR signal, this moment, computer entry device can't detect judgement.Repetitive operation, movement locus of the present invention can be detected by computer entry device to be judged and then the realization writing function.
The implementation method step of said a kind of photoelectric induction device is following:
1., press power knob 20, said oscillation circuit unit 421 sends the 37KHz pulse signal, said attenuator circuit unit 422 carries out offering power valve 2 after the attenuation processing with the 37KHz pulse signal and sends 37KHz IR signal.
2., said body 1 bottom is during near reflecting surface 30, the 37KHz IR signal that said power valve 2 sends can't reflect by said receiving trap 3 and receive, said electronic switch K normally closed contact K1 continue to connect.
Said body 1 bottom contact or during near reflecting surface 30, the 37KHz IR signal that said power valve 2 sends is received by said receiving trap 3 through the diffuse reflection effect of reflecting surface 30.
3., the 37KHz IR signal that receives of said receiving trap 3 is sent to bandpass filtering unit 432 after in said amplifier circuit unit 431, carrying out processing and amplifying, the pulse signal of the 432 pairs of non-37KHz frequency ranges in said bandpass filtering unit is isolated.
4., the 37KHz IR signal from reflecting surface 30 reflections of said receiving trap 3 receptions charges to said integrating circuit unit 433; Through behind the very first time section T1; The output voltage of said integrating circuit unit 433 reaches the forward voltage of comparer 434; The normally opened contact K2 that said comparer 434 drives said electronic switch K connects, and normally closed contact K1 breaks off.This moment, said power valve 2 was connected with 41 conductings of said power circuit unit, and said power valve 2 sends strong IR signal, detected for computer entry device and judged movement locus of the present invention.
5., said power valve 2 stops to send 37KHz IR signal; Said integrating circuit unit 433 stops to receive the IR signal and discharges; Behind the second time period T2, said integrating circuit unit 433 output voltages are lower than comparer 434 when keeping voltage, and the normally closed contact K1 that said comparer 434 drives said electronic switch K connects; Normally opened contact K2 breaks off; Said power valve 2 stops to send strong IR signal, and then sends 37KHz IR signal, and this moment, computer entry device can't detect judgement.
6., repetitive operation step 2.～5.; Said power valve 2 sends 37KHz IR signal; Reflecting surface 30 is not left in body 1 bottom; Said power valve 2 sends 37KHz IR signal and strong IR signal in turn in cycle T, movement locus of the present invention when computer entry device detect to be judged the strong IR signal of power valve 2 emissions.Said cycle T confirms that by the time constant R*C calculating of integrating circuit unit 433 said cycle T is the very first time section T1 and the second time period T2 sum.
In sum; A kind of photoelectric induction device of the present invention is through installing power valve 2, receiving trap 3 and circuit board 4 in body 1; Receiving trap 3 receives the IR signal that reflects from reflecting surface 30; Utilize the light-operated circuit 40 on the said circuit board 4 to electrically connect said power valve 2 and receiving trap 3; And control said power valve 2 and send different IR signals in different time sections, thereby let computer entry device detect judge movement locus of the present invention, simple in structure, with low cost, do not receive the restriction of work screen and antijamming capability strong.The implementation method of a kind of photoelectric induction device of the present invention is isolated pulse signal through the bandpass filtering unit 432 of light-operated circuit 40; Integrating circuit unit 433 carries out the output voltage of charge or discharge control integrating circuit unit 433; The forward voltage of the said comparer 434 of said integrating circuit unit 433 output voltages and keep voltage ratio after; And then drive said electronic switch K in normally closed contact K1 and normally opened contact K2 turned or disconnection; Thereby control the different IR signal of said power valve 2 emissions, movement locus of the present invention can be detected by computer entry device to be judged and the realization writing function.
The above embodiment has only expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as limitation of the scope of the invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with accompanying claims.
Claims (9)
1. photoelectric induction device; Comprise body (1), power valve (2), receiving trap (3), circuit board (4) and battery unit (5); Said power valve (2), receiving trap (3), circuit board (4) and battery unit (5) are contained in the said body (1); Said power valve (2) and receiving trap (3) electrically connect with said circuit board (4); Said battery unit (5) electrically connects with said circuit board (3), and the bottom face of said body (1) is provided with through hole (10), it is characterized in that: said body (1) is provided with power knob (20); Said power knob (20) is controlled said battery unit (5) conducting; Said power valve (2) is installed in through hole (10) inboard of said body (1) and sends IR, and said receiving trap (3) is arranged at said through hole (10) both sides, and said circuit board (4) is provided with light-operated circuit (40).
2. a kind of photoelectric induction device according to claim 1; It is characterized in that: said power valve (2) transmitting terminal is vertically located towards said through hole (10); Said receiving trap (3) oblique cutting is arranged at said through hole (10) both sides; Said body (1) bottom contacts or near reflecting surface (30), said receiving trap (3) receives the IR signal that reflects through said reflecting surface (30).
3. a kind of photoelectric induction device according to claim 2 is characterized in that: said reflecting surface (30) is flexible curtain.
4. a kind of photoelectric induction device according to claim 1 is characterized in that: said body (1) is hollow pen type structure or finger-worn type apparatus structure.
5. a kind of photoelectric induction device according to claim 1; It is characterized in that: said light-operated circuit (40) comprises power circuit unit (41), pulse unit (42) and on-off circuit unit (43); Said power circuit unit (41) electrically connects with said pulse unit (42) and said on-off circuit unit (43); Attenuator circuit unit (422) and electronic switch (K) that said pulse unit (42) is provided with oscillation circuit unit (421), electrically connects with oscillation circuit unit (421); Said electronic switch (K) electrically connects with said power valve (2); Said on-off circuit unit (43) electrically connects with said electronic switch (K), and said electronic switch (K) break-make is handled and controlled in said on-off circuit unit (43) to the IR signal that said receiving trap (3) receives.
6. a kind of photoelectric induction device according to claim 5; It is characterized in that: said electronic switch (K) is provided with normally closed contact (K1) and normally opened contact (K2); Said normally closed contact (K1) electrically connects with said attenuator circuit unit (422), and said normally opened contact (K2) electrically connects with said power circuit unit (41); Said on-off circuit unit (43) electrically connects successively and is provided with amplifier circuit unit (431), bandpass filtering unit (432), integrating circuit unit (433) and comparer (434), and said amplifier circuit unit (431) electrically connects with said receiving trap (3); Said comparer (434) output terminal and said electronic switch (K) electrically connect, and said comparer (434) input end is connected with said integrating circuit unit (433) output terminal, and said comparer (434) drives said electronic switch (K).
7. a kind of photoelectric induction device according to claim 1 is characterized in that: said oscillation circuit unit (421) sends the 37KHz pulse signal.
8. according to the implementation method of the described a kind of photoelectric induction device of claim 1-7, it is characterized in that, comprise the steps:
1., press power knob (20), said oscillation circuit unit (421) sends a frequency pulse signal, said attenuator circuit unit (422) carries out offering power valve (2) after the attenuation processing with pulse signal and sends this frequency IR signal;
2., said body (1) bottom contact or during near reflecting surface (30), this frequency IR signal that said power valve (2) sends is received by said receiving trap (3) through the diffuse reflection effect of reflecting surface (30);
3., this frequency IR signal of receiving of said receiving trap (3) is sent to bandpass filtering unit (432) after in said amplifier circuit unit (431), carrying out processing and amplifying, said bandpass filtering unit (432) isolates the pulse signal of non-this frequency;
4., this frequency IR signal from reflecting surface (30) reflection of said receiving trap (3) reception charges to said integrating circuit unit (433); After very first time section (T1); The output voltage of said integrating circuit unit (433) reaches the forward voltage of comparer (434); Said comparer (434) drives the normally opened contact (K2) of said electronic switch (K) and connects, and normally closed contact (K1) breaks off; Said power valve this moment (2) is connected with said power circuit unit (41) conducting, and said power valve (2) sends strong IR signal;
5., said power valve (2) stops to send this frequency IR signal; Said integrating circuit unit (433) stops to receive the IR signal and discharges; After second time period (T2); Said integrating circuit unit (433) output voltage is lower than comparer (434) when keeping voltage, and said comparer (434) drives the normally closed contact (K1) of said electronic switch (K) and connects, and normally opened contact (K2) breaks off; Said power valve (2) stops to send strong IR signal, and then sends this frequency IR signal;
6., repetitive operation step 2.～5.; Said power valve (2) sends this frequency IR signal; Reflecting surface (30) is not left in body (1) bottom; Said power valve (2) sends this frequency IR signal and strong IR signal in turn in one-period (T), computer entry device detects judges the strong IR signal of power valve (2) emission.
9. the implementation method of a kind of photoelectric induction device according to claim 8, it is characterized in that: said this frequency IR signal is 37KHz, the said cycle (T) is very first time section (T1) and second time period (T2) sum.
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| CN201110314169.0A CN102360252B (en) | 2011-10-17 | 2011-10-17 | Photoelectric sensing device and implementation method thereof |
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| CN201110314169.0A CN102360252B (en) | 2011-10-17 | 2011-10-17 | Photoelectric sensing device and implementation method thereof |
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| CN110220541A (en) * | 2019-05-17 | 2019-09-10 | 广东博智林机器人有限公司 | Infrared detecting device and infrared photoelectric sensor |
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| CN110307861A (en) * | 2019-07-05 | 2019-10-08 | 上海托菲机电科技有限公司 | A kind of Photoelectric Sensor Device and control system |
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| CN110220541A (en) * | 2019-05-17 | 2019-09-10 | 广东博智林机器人有限公司 | Infrared detecting device and infrared photoelectric sensor |
| CN110220541B (en) * | 2019-05-17 | 2021-03-26 | 广东博智林机器人有限公司 | Infrared detection device and infrared photoelectric sensor |
| CN110307861A (en) * | 2019-07-05 | 2019-10-08 | 上海托菲机电科技有限公司 | A kind of Photoelectric Sensor Device and control system |
| CN110307861B (en) * | 2019-07-05 | 2024-04-09 | 托菲传感技术(上海)股份有限公司 | Photoelectric sensor device and control system |
| CN110296721A (en) * | 2019-07-08 | 2019-10-01 | 上海托菲机电科技有限公司 | A kind of strong self-correcting photoelectric sensor and its application method |
| CN110296721B (en) * | 2019-07-08 | 2024-03-01 | 托菲传感技术(上海)股份有限公司 | Strong self-correction photoelectric sensor and application method thereof |
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