CN104655270B - The automatic measuring system of photo-sensing device photobehavior - Google Patents
The automatic measuring system of photo-sensing device photobehavior Download PDFInfo
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- CN104655270B CN104655270B CN201310589721.6A CN201310589721A CN104655270B CN 104655270 B CN104655270 B CN 104655270B CN 201310589721 A CN201310589721 A CN 201310589721A CN 104655270 B CN104655270 B CN 104655270B
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Abstract
The present invention relates to a kind of automatic measuring system of photo-sensing device photobehavior, its composition includes：Display terminal, microprocessor, digital analog converter, voltage controlled current source, light source, signal condition unit and analog-digital converter.It is characterized in that：Only light source and tested photo-sensing device are placed in miniature darkroom；Fixed using light source and tested photo-sensing device distance, the method for changing light-source brightness changes the illumination of tested photo-sensing device smooth surface；Controllable illumination is produced using voltage controlled current source driving light source；Voltage controlled current source is controlled using digital analog converter, the output voltage of photo-sensing device is acquired using analog-digital converter, microprocessor technology is introduced into test process, realizes the automation of measurement process.This automatic measuring system compared with traditional measurement method, have facilitate it is easy-to-use, measurement quick and precisely, can miniature portable the advantages of.
Description
Technical field
The present invention relates to optical sensor detection field, and in particular to a kind of automatic measurement of photo-sensing device photobehavior
Method and system.
Background technology
At present, with the popularization and application of technology with an automatic light meter, the various terminals with display screen, mobile phone, PDA, computer,
Display, TV, even fascia, aircraft cockpit be respectively provided with according to surrounding environment light intensity automatically adjust screen intensity,
Meter character brightness, or the function of illuminator brightness.The use of the function has two：First, reaching power saving, extend hand-held
The purpose of device battery usage time；Two are to provide for the comfortableness that user reads under varying environment illuminance.
One of core of the technology is to detect the photo-sensing device of ambient light illumination.It is existing in the research and development and production of reality
, it is often necessary to illumination-voltage characteristic of photo-sensing device is measured.In general measuring method is：Take manually
Mode is measured, and tester, equipment and tested photo-sensing device are placed in darkroom.Using standard lamp as light source, pass through tune
The method of distance adjusts the illumination of tested photo-sensing device smooth surface between whole tested photo-sensing device and standard lamp.Measurement
When, standard lamp is fixed on guide rail, in guide rail other end stationary fixture.First fix on fixture and visited as the illumination photometer of standard
Head, the distance between fixture and standard lamp are adjusted, make illumination photometer reading be desired value, stationary fixture position.Illumination photometer is popped one's head in
Tested photo-sensing device is replaced with, the smooth surface and former illumination photometer probe smooth surface for ensureing tested photo-sensing device when fixed are in
Same position.Measurement is now tested the output voltage of photo-sensing device, and as tested photo-sensing device is defeated under current illumination
Go out voltage.Point-to-point measurement, finally these points are linked up on drawing paper, you can obtain illumination-electricity of tested photo-sensing device
Press characteristic curve.
The shortcomings that such a measuring method be test site fix, occupied ground area it is big, it is impossible to meet the requirement of portability；
Its operating procedure is complicated, and the requirement to operating personnel is very high, and measurement error is larger；Testing time is grown, and measures an OPTICAL SENSORS
The characteristic curve of part generally requires time a couple of days, and efficiency is extremely inefficient.
In view of this, study it is a kind of facilitate easy-to-use, measurement quick and precisely, the photo-sensing device of being capable of miniature portable it is photosensitive
Characteristic automatic measuring system turns into an important topic.
The content of the invention
Present invention proposition is a kind of to facilitate automatic measurement system that is easy-to-use, measuring fast and accurately photo-sensing device photobehavior
System.
To achieve these goals, technical scheme is as follows：A kind of automation of photo-sensing device photobehavior
Measuring system, including tested photo-sensing device；Light source, certain illumination is produced to the smooth surface for being tested photo-sensing device；Signal
Conditioning unit, the signal condition unit are connected with tested photo-sensing device, and the output voltage for being tested photo-sensing device is carried out
Filtering is adjusted to adapt to requirement of the analog-digital converter to input signal with reducing noise to gain and level；Analog-to-digital conversion
Device, it is connected with signal condition unit, the output voltage of tested photo-sensing device is converted into digital data；Microprocessor, from
Analog-digital converter receives the data of tested photo-sensing device collection, it is handled, and send display terminal to be shown；Display
Terminal, show measurement result.The microprocessor also receives the instruction of display terminal transmission, the voltage digital of output driving light source
Signal, the system include digital analog converter, and the voltage digital signal that microprocessor exports is converted to voltage by digital analog converter, should
Voltage is controlling voltage controlled current source；Voltage controlled current source, the voltage conversion that digital analog converter is exported is electric current, for driving light
Source.The system also includes housing, be engaged with housing cover, tested sensor and light source are respectively positioned in housing, be tested and sense
Device is connected by sensor stationary fixture with housing, and light source 5 has by light source fixing clamp to be connected with covering.
Another object of the present invention is to provide a kind of automatic measurement method of photo-sensing device photobehavior, this method
Facilitate easy-to-use, measurement quick and precisely.
To achieve these goals, technical scheme is as follows：A kind of automation of photo-sensing device photobehavior
Measuring method, it is characterised in that：Light source and tested photo-sensing device are placed in darkroom；Using light source and tested photo-sensing device
Distance is fixed, and the method for changing light-source brightness changes the illumination of tested photo-sensing device smooth surface.Specially：Microprocessor calculates
Obtain needing the multiple sampled point illumination a measured, the data for being sent to digital analog converter are calculated according to illuminance correction curve, are led to
Cross microprocessor and send the data to digital analog converter, the output electricity of digital analog converter output voltage control voltage controlled current source
Stream, and then the brightness of light source is controlled, the illumination of tested sensor smooth surface is reached desired value, after illumination is stable, then pass through
Microprocessor controls analog-digital converter that the output voltage of tested sensor is carried out into analog-to-digital conversion, and the data after conversion pass through voltage
The actual output voltage b of sensor is calculated in calibration curve, thus obtains the measurement data of a point（a,b）, in repetition
Step is stated, after whole sample point datas are measured, is painted the characteristic curve of tested sensor according to measurement data in terminal
Make and.The darkroom includes housing, be engaged with housing cover, tested sensor and light source are respectively positioned in housing, be tested biography
Sensor is connected by sensor stationary fixture with housing, and light source has by light source fixing clamp to be connected with covering, and housing, lid, light source are solid
Clamp has and the equal painted black of sensor stationary fixture.
Compared with traditional measurement method, light source and tested photo-sensing device are only placed in secretly by technical scheme proposed by the present invention
In room, and darkroom is miniaturized；Fixed using distance between light source and tested photo-sensing device, the method for changing light-source brightness changes
Become the illumination of tested photo-sensing device smooth surface；Controllable illumination is produced using voltage controlled current source driving light source；Turned using digital-to-analogue
Parallel operation controls voltage controlled current source, the output voltage of photo-sensing device is acquired using analog-digital converter, by microprocessor skill
Art introduces test process, realizes the automation of measurement process.This automatic measuring system has side compared with traditional measurement method
It is easy use, measurement quick and precisely, can miniature portable the advantages of.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the construction of the automatic measuring system of photo-sensing device photobehavior of the present invention.
Fig. 2 is the structure in miniature darkroom in the present invention.
Fig. 3 is the groundwork flow of photo-sensing device photobehavior automatic measuring system of the present invention.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are apparent to, with reference to figure
Show and embodiment, the present invention is expanded on further.
The composition of the system is as shown in figure 1, including display terminal 1, microprocessor 2, digital analog converter 3, voltage controlled current source
4th, light source 5, signal condition unit 6, analog-digital converter 7 and tested sensor 8.
Display terminal 1 can be PC or other equipment with display.Its function is the mistake of control measurement
Journey, show measurement result, there is provided the interface with user mutual.
The function of microprocessor 2 is to receive the instruction that display terminal is sent, and analysis instruction, modulus is controlled according to command information
The work of converter 3, digital analog converter 7, the data of collection are handled, and send display terminal to be shown.
The function of digital analog converter 3 is that the data signal that microprocessor 2 exports is converted into voltage, and the voltage is controlling
Voltage controlled current source 4.
The function of voltage controlled current source 4 is that the voltage conversion for exporting digital analog converter 3 is electric current, for driving light source 5.
The function of light source 5 is in the certain illumination of the smooth surface generation of tested photo-sensing device.
The function of signal condition unit 6 is that the output voltage for being tested photo-sensing device is filtered to reduce noise, right
Gain and level are adjusted to adapt to requirement of the analog-digital converter 7 to input signal.
The function of analog-digital converter 7 is that the output voltage of tested photo-sensing device is converted into digital data.
For the volume compared with small capital measuring system, reach the purpose of portability, test system of the invention only by light source and
Tested sensor is placed in darkroom, and darkroom is minimized, and it is formed as shown in Fig. 2 matching including housing 9, with housing
The lid 10 of conjunction, tested sensor 8 and light source 5 are respectively positioned in housing, and tested sensor 8 passes through sensor stationary fixture 11 and housing
Connection, light source 5 are connected by light source fixing clamp tool 12 with lid 10.Wherein housing 9, lid 10, light source fixing clamp tool 12 and sensor
The equal painted black in the inside of stationary fixture 11.Lid 10 is designed to demountable structure, is convenient for changing tested sensor.Light source fixing clamp has
12 and the height of sensor stationary fixture 11 fix.
This test system is to the control method of illumination：The spacing of fixed light source and tested sensor, by changing light source
The method of brightness changes illumination.Light source is driven using voltage controlled current source, makes the stabilized intensity of light source.Constant-current source is controlled by digital-to-analogue
The output voltage of converter.The output voltage of digital analog converter is controlled by microprocessor, you can control illumination.
This test system is to the output voltage measuring method of sensor：The voltage of tested sensor output first passes through signal
Conditioning unit（6）, the output voltage for being tested photo-sensing device is filtered to reduce noise, gain and level are adjusted
Input analog-to-digital converter afterwards（7）.Analog voltage is converted to data and supplies microcomputer reads by analog-digital converter.
Because this test system introduces the control of microprocessor, accurate non-linear school can be carried out to illumination and voltage
Just, to improve the measurement accuracy of system.Its bearing calibration is as follows：
(1) illuminance correction
Popped one's head in 1. the position of former tested sensor is fixed in miniature darkroom as the illumination photometer of standard, be located at gamut scope
Inside need to correct N number of point altogether（N is bigger, and correction accuracy is higher）, control microprocessor to send data to digital analog converter, read
Illumination photometer probe reading, you can obtain a check point (,), after point-to-point measurement, data are obtained to sequenceIf its inverse function sequence is, whereinFor illumination,For number
Weighted-voltage D/A converter data.
2. measure, it is assumed that system needs to produceIllumination, current digital analog converter can be obtained according to above-mentioned opposite sequence
The data that should be exported, then control microprocessor to write data to digital analog converter.When expectation illumination fallsWithBetween when, can according to data to (,),The expectation is calculated by interpolation method to shine
The lower data that should be write to digital analog converter of degree.
(2) voltage correction
1. removing by the line between sensor and test system, the output of original sensor is substituted with a variable voltage source,
With the output voltage of a high-order voltmeter detection variable voltage source, being located in gamut scope needs to correct N number of point altogether（N is bigger,
Correction accuracy is higher）, regulation variable voltage source makes the voltmeter reading be, the data of control microcomputer reads analog-digital converter
For, you can obtain a check point (,), after point-to-point measurement, data are obtained to sequence,
If its inverse function sequence is, whereinData after being changed for analog-digital converter,For sensing
The actual output voltage of device.
2. measure, it is assumed that microcomputer reads to analog-digital converter change after data be, can according to above-mentioned opposite sequence
To obtain the voltage of current sensor reality output.When the analog-digital converter data read existWithBetween when, can be with
According to can according to data to (,),It is calculated by interpolation method corresponding to the data
Sensor actual output voltage.
The groundwork flow of system is as shown in Figure 3.Its groundwork flow is：Its working method is as follows：
A) user is configured by terminal-pair measurement parameter, including the range of measurement, step-length, sampling interval, correction number
According to etc.；
B) after starting test, system reads the data of user configuration；
C) the multiple sampled point illumination a for needing to measure are calculated according to configuration data；
D) data for being sent to digital analog converter are calculated according to illuminance correction curve；
E) digital analog converter is sent the data to by microprocessor；
F) output current of digital analog converter output voltage control voltage controlled current source；
G) brightness of voltage controlled current source control light source, the illumination of tested sensor smooth surface is made to reach desired value；
H) wait illumination stable；
I) control analog-digital converter that the output voltage of tested sensor is carried out into analog-to-digital conversion by microprocessor；
J) data after analog-to-digital conversion are calculated to the actual output voltage b of sensor according to voltage correction curve, this
Sample just obtains the measurement data of a point（a,b）；
K) repeat the above steps, whole sample point datas are measured；
L) characteristic curve of tested sensor is drawn in terminal according to the measurement data of whole sampled points.
The dynamicization measuring system of photo-sensing device photobehavior provided by the present invention is described in detail above, its
The middle computational methods that the sampled point illumination a for needing to measure is calculated according to configuration data are prior art, be will not be repeated here.
For those of ordinary skill in the art, according to the thought of the embodiment of the present invention, in specific embodiments and applications
It will change, in summary, this specification content should not be construed as limiting the invention.
Claims (3)
1. a kind of automatic measuring system of photo-sensing device photobehavior, including tested photo-sensing device；Standard sources, to quilt
The smooth surface of light-metering sensing device produces certain illumination；Signal condition unit, the signal condition unit and tested light sensing
Device connect, to be tested photo-sensing device output voltage be filtered to reduce noise, gain and level are adjusted with
Adapt to requirement of the analog-digital converter to input signal；Analog-digital converter, it is connected with signal condition unit, by tested photo-sensing device
Output voltage be converted to digital data；Microprocessor, the data of tested photo-sensing device collection are received from analog-digital converter,
It is handled, and send display terminal to be shown；Display terminal, measurement result is shown, the microprocessor also receives aobvious
Show the instruction that terminal is sent, the voltage digital signal of output driving standard sources, the system includes digital analog converter, digital-to-analogue conversion
The voltage digital signal that microprocessor exports is converted to voltage by device, and the voltage is controlling voltage controlled current source；Voltage controlled current source,
The voltage conversion that digital analog converter is exported is electric current, for driving standard sources.
2. the automatic measuring system of photo-sensing device photobehavior according to claim 1, it is characterised in that the system
The lid that system also includes housing, is engaged with housing, photo-sensing device and standard sources are respectively positioned in housing, and photo-sensing device passes through
Sensor stationary fixture is connected with housing, and standard sources has by light source fixing clamp to be connected with covering.
3. the automatic measuring system of photo-sensing device photobehavior according to claim 2, it is characterised in that housing,
Lid, light source fixing clamp tool and the equal painted black of sensor stationary fixture.
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| CN104655270B true CN104655270B (en) | 2018-01-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105374307A (en) * | 2015-12-28 | 2016-03-02 | 上海电机学院 | LCD (liquid crystal display) screen luminance tester |
| CN106782297B (en) * | 2016-12-27 | 2023-08-22 | 莱茵技术（上海）有限公司 | Standard light feeding device for detecting ambient light sensor of LED display |
| CN114063094A (en) * | 2021-11-16 | 2022-02-18 | 上海索迪龙自动化有限公司 | Photoelectric sensor based laser sensing distance method and photoelectric sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2713449Y (en) * | 2004-06-11 | 2005-07-27 | 清华大学 | Pocket electronic luminometer |
| JP2009210565A (en) * | 2008-02-04 | 2009-09-17 | Optex Fa Co Ltd | Light quantity monitor sensor and image processing system equipped with this |
| CN101893480A (en) * | 2009-05-21 | 2010-11-24 | 精工电子有限公司 | Optical detection device |
| CN202167171U (en) * | 2011-07-20 | 2012-03-14 | 沈阳师范大学 | Comprehensive experiment instrument for detecting characteristics of photoelectric devices |
| CN102520330A (en) * | 2011-12-01 | 2012-06-27 | 华中科技大学 | Volt-ampere characteristic testing system of solar cell photovoltaic device |
-
2013
- 2013-11-21 CN CN201310589721.6A patent/CN104655270B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2713449Y (en) * | 2004-06-11 | 2005-07-27 | 清华大学 | Pocket electronic luminometer |
| JP2009210565A (en) * | 2008-02-04 | 2009-09-17 | Optex Fa Co Ltd | Light quantity monitor sensor and image processing system equipped with this |
| CN101893480A (en) * | 2009-05-21 | 2010-11-24 | 精工电子有限公司 | Optical detection device |
| CN202167171U (en) * | 2011-07-20 | 2012-03-14 | 沈阳师范大学 | Comprehensive experiment instrument for detecting characteristics of photoelectric devices |
| CN102520330A (en) * | 2011-12-01 | 2012-06-27 | 华中科技大学 | Volt-ampere characteristic testing system of solar cell photovoltaic device |
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