Testing system and method for high-efficiency integrated optical fiber gyroscope

Abstract

The invention discloses a testing system and method for a high-efficiency integrated optical fiber gyroscope. The testing system comprises a sine velocity rotating table, a liquid nitrogen cup, a heating film, a voltage acquisition module, a current acquisition module, a temperature adjusting and controlling module, a low-pass filter module, a booster differential module, a high-accuracy A / D (Analogue / Digital) conversion module and an upper computer. The testing method comprises the following steps of: firstly, measuring a zero bias voltage V0 of the optical fiber gyroscope, a temperature T of the sine velocity rotating table and a current A consumed by the optical fiber gyroscope; secondly, measuring an output voltage V' of the optical fiber gyroscope; thirdly, inputting the V0, V', A and T into an active low-pass filter circuit, and eliminating a high-frequency noise signal mixed in signals; and fourthly, performing A / D conversion on the V0, V', A and T, and storing the V0, V', A and T. When the testing system and method disclosed by the invention are adopted to test the optical fiber gyroscope, the speed of testing the optical fiber gyroscope can be greatly increased.

Description

technical field [0001] The invention relates to a method for testing an optical fiber gyroscope, which belongs to the technical field of optical fiber gyroscope performance testing, in particular to a test system and a test method for an efficient integrated optical fiber gyroscope. Background technique [0002] In the production process of fiber optic gyroscopes, gyroscope performance testing is a necessary link, which usually needs to be completed on a specific turntable. The main test parameters include the zero bias and scale of the gyroscope at full temperature (-30°C-70°C). factor and power consumption, etc., the test results can reflect the accuracy and stability of the gyroscope. At the same time, during the working process of the fiber optic gyroscope, in order to ensure the performance and quality of the gyroscope and the reliability of the work, it is necessary to carry out regular testing and regular calibration. [0003] The existing method of testing fiber opt...

AI Technical Summary

Problems solved by technology

[0003] The existing method of testing fiber optic gyroscopes is usually to place the fiber optic gyroscope on a sine rate test turntable and use a compressor to control the temperature. Although the temperature control accuracy is high, it takes about an hour to set the temperature point. In order to stabilize it at a high-precision temperature point, since the test of the gyro needs to be tested at full temperature, that is, at different temperature points, it takes a long time to set different temperature points

At the same time, the existing test method uses a closed-loop feedback method for testing, so the operation is complicated

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