Lingbang develops laser detector detection system

Nowadays, standard testing equipment with a single function can no longer fully test the performance of laser detectors. To this end, Beijing Lingbang Instruments has developed a laser detector detection system that can fully test the functions and various indicators of laser detectors, and for the first time accurately simulate the spatial frequency coded laser field. The system is suitable for various beam-riding guided laser detectors, and after a small modification, it can also be used to simulate various laser information fields.

Device appearance and software interface

In the inspection of laser detectors, traditional equipment is bulky and inconvenient to use. It can only measure and record manually, and the test data is unreliable. The equipment has a single function and cannot accurately simulate the laser field, let alone comprehensively test the performance of the detector. Each instrument is individually traceable, the cost of use is high, and the detection efficiency is extremely low.

In order to comprehensively improve the detection efficiency, Beijing Lingbang Instrument Technology Co., Ltd. has developed a "laser detector detection system" (laser information field simulation system), which integrates optics, mechanics, electronics and software algorithms, uses laser communication technology, and uses the beam-riding guidance principle to detect the functions and various indicators of laser detectors. The system has functions such as information light field simulation, interference light simulation and optical power monitoring and control, can establish a simulated light environment, and test the laser receiver and electronic devices at the same time.

The system includes a laser light source and an interference light source, and is equipped with an optical power meter with a variable range. When testing a laser receiver, the laser light source cooperates with an acousto-optic modulator to simulate the guided light field, while a xenon lamp creates an interference light field, and the performance of the laser receiver is tested in a simulated light environment. The xenon lamp applies optical interference to the receiver, and its output power density can be adjusted in the range of 0~2500W/m2.

The system can test all the properties of the laser information field. It can simulate the laser field with spatial frequency coding and simulate the position of the laser receiver in the laser field in the form of frequency. The optical frequency can be changed continuously and its change speed can be adjusted.

Engineers have designed special measurement software, the test data is authentic and reliable, and can be traced as a whole. The system has a high degree of automation, can automatically measure, automatically store data, and automatically generate reports, which is convenient for users.

The system has the function of reading electronic device information, which can read the output voltage of the electronic device and convert it into position information based on the voltage. The conversion method is manually input. It can accurately measure the power density of the emitted light and display the emitted light power waveform in real time. The optical power density measurement error is ±6%FS, and the modulation signal frequency accuracy is ±0.5%FS.

The optical transmission system also has a frequency sweep function, which can test the amplitude-frequency response characteristics of the laser receiver. The test system can generate the excitation signal required by each unit component and test the response output signal of each unit component.

This system has been successfully applied in a certain institute in Shanxi, overturning the previous mode of using complex equipment to test a simple performance, making it possible for one device to test multiple performances, and providing reliable guarantee for the detection of various performance indicators of laser receivers, electronic devices and amplifiers. The system has achieved accurate simulation of spatial frequency coded laser fields for the first time, which has a guiding role in domestic laser simulation research.