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Light-proof detection device and detection method for light-sensitive detector

A technology of a photosensitive detector and a detection method, which is applied in the field of sensors, can solve the problems of inaccurate quantitative measurement, shortened lifespan of the detector, unable to work of the detector, etc., and achieves the effects of fast light-proof sealing, convenient promotion and use, and simple structure.

Active Publication Date: 2018-12-25
JIANGSU SINOGRAM MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the detector for quantitative measurement, although it is packaged in a light-proof package, there may be a small amount of light leakage or work in a strong light environment, which will cause inaccurate quantitative measurement and reduce the life of the detector.
In the case of severe light leakage, the photosensitive element or components used for the readout circuit, power supply, etc. will be burned, causing the detector to fail to work

Method used

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  • Light-proof detection device and detection method for light-sensitive detector
  • Light-proof detection device and detection method for light-sensitive detector
  • Light-proof detection device and detection method for light-sensitive detector

Examples

Experimental program
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Effect test

Embodiment 1

[0053] This embodiment provides a light-proof detection method for a photosensitive detector, and the method of this embodiment may include the following steps:

[0054] 101. Obtain the first output signal output by the photosensitive detector in a dark environment state;

[0055] 102. Obtain a second output signal output by the photosensitive detector in the first brightness environment state;

[0056]103. According to the first output signal and the second output signal, establish a relationship between baseline noise and light leakage of the photosensitive detector, and determine whether the photosensitive detector leaks light.

[0057] The baseline noise in this embodiment may be obtained by performing baseline sampling on the output signal of the photosensitive detector and through statistical analysis. For example, baseline noise is specifically represented by the mean square fluctuation statistic of the baseline sampled numbers.

[0058] In a specific implementation p...

Embodiment 2

[0067] Such as figure 1 As shown, this embodiment provides a schematic structural diagram of a light-shielding detection device. The light-shielding detection device of this embodiment includes: a light-shielding box, a light strip, a light strip controller, a shaping and amplification trigger circuit, and a signal acquisition circuit;

[0068] Among them, the light-shielding box is used to place the photosensitive detector to be tested. In theory, the photosensitive detector is placed in the center of the light-shielding box. In practical applications, such as figure 1 As shown, the photosensitive detector is usually placed on the bottom surface of the light-proof box.

[0069] This example does not limit figure 1 The shape of the light-shielding box in the box can be adjusted according to actual needs, figure 1 Shown in is a square box.

[0070] The interior of the light-shielding box in this embodiment is provided with a light strip that generates light of various bright...

Embodiment 3

[0080] This embodiment also provides a light-shielding detection method based on the above-mentioned light-shielding detection device, which includes:

[0081] S1. When the photosensitive detector to be tested is placed in the light-proof box and the light strip is turned off, the computer records the first signal collected by the ADC collection circuit.

[0082] That is to say, the light strip is turned off so that the photosensitive detector is in a dark environment, and at this time, the computer records the first signal collected by the ADC collection circuit.

[0083] S2. When the light strips in all directions in the light-shielding box are turned on, and the brightness inside the light-shielding box reaches a first preset brightness, the computer records the second signal collected by the ADC acquisition circuit.

[0084] That is to say, when the first surface of the photosensitive detector is in a bright environment and the other surfaces are in a dark environment, the...

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Abstract

The invention finds that the light leakage of a light-sensitive element causes a significant change in amplitude of noise of a output signal and frequency of the noise of a light-sensitive element. The noise and change information is extracted by waveform sampling and analysis of the limited sampling rate, thereby guessing whether the light-sensitive detector leaks light. The invention provides alight-proof detection device and a detection method for a light-sensitive detector based on such a detection method, the device comprises a light-proof box for placing a detector, a light strip for generating brightness light arranged in the box, a shaping amplification trigger circuit located outside the box and connected to a output end of the detector, and a signal acquisition circuit connectedto the shaping amplification trigger circuit; the light strip is controlled by a light strip controller outside the box. The above-mentioned light-proof detection device can detect the light-proof degree of light-sensitive detector and can detect the light leakage position of the light-sensitive detector.

Description

technical field [0001] The invention relates to sensor technology, in particular to a light-proof detection device and detection method for photosensitive detectors. Background technique [0002] Detectors made of photosensitive components are extremely sensitive to external light interference, and the photosensitive part of the detector needs to be protected from light. For quantitative measurement detectors, although light-proof packaging is carried out, there may be a small amount of light leakage or work in a strong light environment, which will cause inaccurate quantitative measurement and reduce the life of the detector. In the case of severe light leakage, the photosensitive element or components used for the readout circuit, power supply, etc. will be burned, causing the detector to fail to work. [0003] In view of the above, it is necessary to detect the detector in the dark, and how to carry out the detection of the detector made of photosensitive components in t...

Claims

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Application Information

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IPC IPC(8): G01J1/42
CPCG01J1/42
Inventor 吴和宇吕绮雯
Owner JIANGSU SINOGRAM MEDICAL TECH CO LTD
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