CN104236862A - Optical performance test method - Google Patents
Optical performance test method Download PDFInfo
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- CN104236862A CN104236862A CN201410508842.8A CN201410508842A CN104236862A CN 104236862 A CN104236862 A CN 104236862A CN 201410508842 A CN201410508842 A CN 201410508842A CN 104236862 A CN104236862 A CN 104236862A
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- light intensity
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Abstract
The invention discloses an optical performance test method. The optical performance test method includes: S1), placing a light-transmittance controllable light-transmitting device between an optical transmitter and an optical receiver of equipment; S2), regulating light transmittance of the light-transmitting device to be A to acquire first light intensity C received by the optical receiver when the light transmittance is A, wherein A is smaller than 100%; S3), according to the light transmittance and the first light intensity C, calculating second light intensity D of the light-transmitting device in the complete light-transmitting state; S4), judging whether the second light intensity D is in a qualified light intensity range of the equipment or not, if yes, judging the optical performance of the equipment to be normal, and if not, judging the optical performance of the equipment to be abnormal. By the optical performance test method, the light intensity received by the optical receiver can be accurately tested, and self-test of the optical performance of the equipment is realized.
Description
Technical field
The present invention relates to input and processing technology field, particularly relate to a kind of optical property detection method.
Background technology
Nowadays the method utilizing optical device to carry out detecting is widely applied in measuring equipment, such as, and blood oxygen measurement device.Photoelectric sensor is enclosed within the finger of people by blood oxygen measurement device, utilize finger as the transparent vessel of splendid attire haemoglobin, the ruddiness of use wavelength 660nm and the near infrared light of 940nm are as injecting light source, measure and calculate hemoglobin concentration and blood oxygen saturation by the light conductive strength of tissue bed, provide a kind of not damaged Oximetry instrument continuously for clinical.
But the difference of the difference of optical device and optical device service time, can make optical property change to some extent, thus the overall performance of measuring equipment may be caused not up to standard, affect measurement result.Therefore, need to detect the optical property of measuring equipment, namely when optical launcher and optical receiver all work with normal power, whether the light intensity received by optical receiver meets preset requirement.
The scheme of existing detecting optical performance is the input current size by control both optical transmitter, allows optical launcher work in improper low power state, with arrive work in optical receiver light intensity signal theoretical curve in the object of non-saturated region.Then, by the power light intensity theoretical curve of optical launcher, the light intensity that when calculating that optical launcher is operated in normal power state, optical receiver receives.But optical launcher is power device, work in high hot high power state, its characteristic can produce larger change with service time, thus causes the power light intensity actual curve of optical launcher different from power light intensity theoretical curve.Therefore, can there is corresponding error in the light intensity that the optical receiver that this detection method is extrapolated receives, and makes the with a low credibility of testing result.
Summary of the invention
The embodiment of the present invention proposes a kind of optical property detection method, and the light intensity that can be received by accurate detecting optical receiver, realizes the Autonomous test of equipment optical property.
The embodiment of the present invention provides a kind of optical property detection method, comprising:
S1, between the optical launcher and optical receiver of equipment, place the controlled light penetrating device of transmittance;
S2, the transmittance regulating described light penetrating device are A, obtain the first light intensity C that described optical receiver receives when described transmittance is A; A<100%;
S3, according to described transmittance A and described first light intensity C, calculate the second light intensity D when described light penetrating device is in complete light transmission state;
S4, judge whether described second light intensity D is in the normal range of light intensity of equipment, if so, then the optical property of described equipment is normal, and if not, then the optical property of described equipment is abnormal.
In one preferably embodiment, described step S2 specifically comprises:
S21, the transmittance of described light penetrating device is adjusted to A;
S22, detect the signal that described optical receiver exports when described transmittance is A, obtain signal B;
S23, light intensity signal curve according to described signal B and described equipment, obtain the first light intensity C that described optical receiver receives when exporting described signal B; Described light intensity signal curve is the theory relation curve between the light intensity that receives of described optical receiver and the signal of output.
In another preferably embodiment, described step S2 specifically comprises:
The signal that S31, default described optical receiver export is B;
The transmittance of S32, the constantly described light penetrating device of adjustment, and detect the signal of described optical receiver output, when detecting that described signal is B, the transmittance obtaining described light penetrating device is A;
S33, light intensity signal curve according to described signal B and described equipment, obtain the first light intensity C that described optical receiver receives when exporting described signal B.
Implement the embodiment of the present invention, there is following beneficial effect:
The optical property detection method that the embodiment of the present invention provides arranges the controlled light penetrating device of transmittance between optical launcher and optical receiver, and by adjusting the transmittance of light penetrating device, thus the optical device adapting to varying strength carries out Autonomous test; When optical launcher and optical receiver are all operated in normal power state, Measurement accuracy optical receiver is through the first light intensity received by light penetrating device, and then extrapolate the second light intensity that optical receiver receives under complete light transmission state, and judge testing result according to the second light intensity, complete Autonomous test, improve the accuracy rate detected.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of an embodiment of optical property detection method provided by the invention;
Fig. 2 is the structural representation of an embodiment of the measuring equipment applying optical property detection method provided by the invention;
Fig. 3 is the schematic flow sheet of an embodiment of step S2 in optical property detection method provided by the invention;
Fig. 4 is the schematic flow sheet of another embodiment of step S2 in optical property detection method provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, be the schematic flow sheet of an embodiment of optical property detection method provided by the invention, comprise:
S1, between the optical launcher and optical receiver of equipment, place the controlled light penetrating device of transmittance.
S2, the transmittance regulating described light penetrating device are A, obtain the first light intensity C that described optical receiver receives when described transmittance is A; A<100%.
S3, according to described transmittance A and described first light intensity C, calculate the second light intensity D when described light penetrating device is in complete light transmission state.Wherein, the computing formula of the second light intensity D is D=C/A.
S4, judge whether described second light intensity D is in the normal range of light intensity of equipment, if so, then the optical property of described equipment is normal, and if not, then the optical property of described equipment is abnormal.
Optical receiver receives when being complete light transmission state range of light intensity standard that normal range of light intensity is light penetrating device.The optical property of equipment optical device judges according to normal range of light intensity.Normal range of light intensity is arranged in the saturation region of the light intensity signal curve of optical receiver.
It should be noted that, equipment has " normally working " and " Autonomous test " two kinds of mode of operations.When equipment is operated in " Autonomous test " pattern, the transmittance regulating light penetrating device is A, A<100%, and light penetrating device is non-fully light transmission state, thus makes equipment carry out the Autonomous test of optical property; When equipment is operated in " normally working " pattern, the transmittance regulating light penetrating device is 100%, and light penetrating device is complete light transmission state, thus makes equipment carry out normal surveying work.
See Fig. 2, it is the structural representation of an embodiment of the measuring equipment applying optical property detection method provided by the invention.The controlled light penetrating device of transmittance 3 is placed between the optical launcher 1 and optical receiver 2 of equipment.When equipment carries out optical property Autonomous test, the transmittance regulating light penetrating device 3 is A, A<100%; When equipment carries out normal surveying work, as blood oxygen measurement device human body blood oxygen saturation, the transmittance regulating light penetrating device 3 is 100%.
In one preferably embodiment, as shown in Figure 3, described step S2 specifically comprises:
S21, the transmittance of described light penetrating device is adjusted to A;
S22, detect the signal that described optical receiver exports when described transmittance is A, obtain signal B;
S23, light intensity signal curve according to described signal B and described equipment, obtain the first light intensity C that described optical receiver receives when exporting described signal B; Described light intensity signal curve is the theory relation curve between the light intensity that receives of described optical receiver and the signal of output.
In another preferably embodiment, as shown in Figure 4, described step S2 specifically comprises:
The signal that S31, default described optical receiver export is B;
The transmittance of S32, the constantly described light penetrating device of adjustment, and detect the signal of described optical receiver output, when detecting that described signal is B, the transmittance obtaining described light penetrating device is A;
S33, light intensity signal curve according to described signal B and described equipment, obtain the first light intensity C that described optical receiver receives when exporting described signal B.
When regulating the transmittance of light penetrating device, its transmittance progressively can be lowered from 100%, often lowering once, then the signal that optical receiver exports be detected.When signal output being detected is B, stop the transmittance regulating light penetrating device, obtaining now transmittance is A.
Preferably, described light intensity signal curve has saturation region and non-saturated region, and described signal B is the signal value of non-saturated region in described light intensity signal curve.
It should be noted that, at non-saturated region, change the light intensity that optical receiver receives, the signal of output also can obviously change; In saturation region, change the light intensity that optical receiver receives, the signal of output is without obvious change.
Preferably, described light penetrating device is liquid crystal panel.
The optical property detection method that the embodiment of the present invention provides arranges the controlled light penetrating device of transmittance between optical launcher and optical receiver, and by adjusting the transmittance of light penetrating device, thus the optical device adapting to varying strength carries out Autonomous test; When optical launcher and optical receiver are all operated in normal power state, Measurement accuracy optical receiver is through the first light intensity received by light penetrating device, and then extrapolate the second light intensity that optical receiver receives under complete light transmission state, and judge testing result according to the second light intensity, complete Autonomous test, improve the accuracy rate detected.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (5)
1. an optical property detection method, is characterized in that, comprising:
S1, between the optical launcher and optical receiver of equipment, place the controlled light penetrating device of transmittance;
S2, the transmittance regulating described light penetrating device are A, obtain the first light intensity C that described optical receiver receives when described transmittance is A; A<100%;
S3, according to described transmittance A and described first light intensity C, calculate the second light intensity D when described light penetrating device is in complete light transmission state;
S4, judge whether described second light intensity D is in the normal range of light intensity of equipment, if so, then the optical property of described equipment is normal, and if not, then the optical property of described equipment is abnormal.
2. optical property detection method as claimed in claim 1, it is characterized in that, described step S2 specifically comprises:
S21, the transmittance of described light penetrating device is adjusted to A;
S22, detect the signal that described optical receiver exports when described transmittance is A, obtain signal B;
S23, light intensity signal curve according to described signal B and described equipment, obtain the first light intensity C that described optical receiver receives when exporting described signal B; Described light intensity signal curve is the theory relation curve between the light intensity that receives of described optical receiver and the signal of output.
3. optical property detection method as claimed in claim 1, it is characterized in that, described step S2 specifically comprises:
The signal that S31, default described optical receiver export is B;
The transmittance of S32, the constantly described light penetrating device of adjustment, and detect the signal of described optical receiver output, when detecting that described signal is B, the transmittance obtaining described light penetrating device is A;
S33, light intensity signal curve according to described signal B and described equipment, obtain the first light intensity C that described optical receiver receives when exporting described signal B.
4. optical property detection method as claimed in claim 2 or claim 3, it is characterized in that, described light intensity signal curve has saturation region and non-saturated region, and described signal B is the signal value in described light intensity signal curve non-saturated region.
5. the optical property detection method as described in any one of claims 1 to 3, is characterized in that, described light penetrating device is liquid crystal panel.
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| CN201410508842.8A CN104236862B (en) | 2014-09-28 | 2014-09-28 | Optical performance test method |
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| CN201410508842.8A CN104236862B (en) | 2014-09-28 | 2014-09-28 | Optical performance test method |
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| CN104236862B CN104236862B (en) | 2017-01-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105806813A (en) * | 2016-04-28 | 2016-07-27 | 钱金维 | Light detecting device and light detecting method |
| CN107076588A (en) * | 2017-01-19 | 2017-08-18 | 深圳市汇顶科技股份有限公司 | The test device of module is detected for biological attribute data |
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| CN103091287A (en) * | 2011-10-31 | 2013-05-08 | 深圳迈瑞生物医疗电子股份有限公司 | Self-diagnosis method for measure result of blood analyzer, and device thereof |
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| US5259381A (en) * | 1986-08-18 | 1993-11-09 | Physio-Control Corporation | Apparatus for the automatic calibration of signals employed in oximetry |
| JP2002095652A (en) * | 2000-09-22 | 2002-04-02 | Nippon Koden Corp | Device of measuring concentration of light-absorbing material in blood |
| CN1444906A (en) * | 2002-03-16 | 2003-10-01 | 三星电子株式会社 | Diagnostic method and device using light |
| CN101052349A (en) * | 2004-10-15 | 2007-10-10 | 日本国长崎县政府 | Non-intruding measurer for value of blood sugar |
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| DE102008056728A1 (en) * | 2008-11-11 | 2010-05-20 | Bluepoint Medical Gmbh & Co. Kg | Measurement device for use at e.g. finger, to determine oxygen saturation in blood, has upper and lower housing elements, which are not separable from each other, and flexibly connected with each other by connecting element |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105806813A (en) * | 2016-04-28 | 2016-07-27 | 钱金维 | Light detecting device and light detecting method |
| CN107076588A (en) * | 2017-01-19 | 2017-08-18 | 深圳市汇顶科技股份有限公司 | The test device of module is detected for biological attribute data |
| WO2018133012A1 (en) * | 2017-01-19 | 2018-07-26 | 深圳市汇顶科技股份有限公司 | Test apparatus for biometric data detection module |
| CN107076588B (en) * | 2017-01-19 | 2022-01-25 | 深圳市汇顶科技股份有限公司 | Testing device for biological characteristic data detection module |
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