A wireless control low-light detection method based on high-sensitivity photodetector
A photoelectric detector and wireless control technology, applied in the field of photoelectric detection, can solve the problems of low accuracy, affect the measurement results, laser offset, etc., and achieve the effect of convenient testing, accurate testing and good accuracy
Active Publication Date: 2017-03-29
EAST CHINA NORMAL UNIV
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[0003] Patent No.: ZL201110356317.5 "A Low-light Detection Method Covering the Visible Light Band", which discloses a low-light detection method. The low-light detection requires people to manually complete two operations without light and with light at the test site. Each operation needs to open the dark box, which is easy to cause laser deviation, thus affecting the measurement results
[0004] The low-light test system of the prior art is easily affected by the light signal on the LCD screen and the thermal radiation of the tester during the low-light detection in the darkroom, and the accuracy is relatively low, which affects the further research and exploration of the light detector and greatly restricts it. Wide application of photodetectors in the field of low light and low irradiance
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[0012] See attached figure 1 , the present invention is made up of low-light radiation source 1, optical test platform 2, photodetector 3, readout circuit 4, embedded data acquisition unit 5 and bluetooth control laser terminal 6; Described low-light radiation source 1 is made up of laser 11 and An attenuation disk 12, a filter 13 and a reflector 14;
[0013] See attached figure 2 , the Bluetooth control laser terminal 6 is composed of a Bluetooth communication module 61, a single-chip microcomputer 62 and an electronic aperture 63, the electronic aperture 63 is arranged on the laser 11 and is controlled by the single-chip microcomputer 62 to turn on and off the laser.
[0014] See attached image 3 , the embedded data acquisition unit 5 is made up of the ARM processor 51 connected with the FPGA module 52, the WIFI module 53, the FIFO memory 54 and the A / D converter 55 respectively, and the A / D converter 55 is connected with the FIFO memory 54 The readout circuit 4 is conn...
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The invention discloses a wireless-control weak light detection method based on a high-sensitive photoelectric detector. The method is characterized in that a weak light test system adopts a bluetooth control laser terminal and an embedded data acquisition unit to realize wireless-control weak light detection; at the bluetooth control laser terminal, through on and off of an electronic aperture, a weak light radiation light source is controlled; in the embedded data acquisition unit, an A / D converter converses data of a reading circuit, and then the data is connected to an ARM processor via a FIFO memory, and a WIFI module wirelessly sends test data. Compared to the prior art, by using the method of the invention, through bluetooth and WIFI functions, light and dark conditions can be changed outside a darkroom, and wireless data reading can be performed through WIFI; influences brought by a light signal on a LCD screen, heat radiation of a tester and the like during a weak light detection in the darkroom are reduced so that the test is accurate; and a wide application of a photoelectric detector in a weak-light low irradiance detection field is promoted.
Description
technical field [0001] The invention relates to the technical field of photoelectric detection, in particular to a wireless control micro-light detection method based on a high-sensitivity photodetector. Background technique [0002] Low-light detectors are widely used in military reconnaissance, low-light night vision imaging, biomedicine and fluorescence Raman and many other fields. In the test under low-light signal conditions, the background signal is very important, because in low-light conditions, the size of the background signal has a great influence on whether the photodetector can detect low-light and the accuracy of the test. [0003] Patent No.: ZL201110356317.5 "A Low-light Detection Method Covering the Visible Light Band", which discloses a low-light detection method. The low-light detection requires people to manually complete two operations without light and with light at the test site. Each operation needs to open the dark box, which is easy to cause laser ...
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IPC IPC(8): G01J1/02
Inventor 王明甲郭方敏
Owner EAST CHINA NORMAL UNIV