A kind of interface circuit of fiber optic gyro combination

Abstract

The invention discloses an interface circuit of a fiber optic gyro combination, which includes: FPGA, which is connected to a host computer; a first serial port transceiver circuit, whose input end is connected to the fiber optic gyroscope combination, and whose output end is connected to the FPGA, and the sequence power-on control Circuit, it is connected with described FPGA, is used for time-sharing to FPGA power supply; I / V conversion amplifying circuit, its input end is connected with the combination of adding table, and output end is connected with the input end of A / D conversion circuit; Said A / V The output end of D conversion circuit is connected with described FPGA; The second serial port transceiver circuit, one end thereof is connected with described FPGA, and the other end is connected with superior system; Described second serial port transceiver circuit is used to receive the optical fiber gyroscope that described FPGA outputs Angular velocity and acceleration information combined and added to the table are output to the upper-level system; PROM is used to store non-volatile software programs for signal processing. The invention has the advantages of simple structure and fast start-up when powered on.

Description

technical field [0001] The invention relates to the field of inertial sensor measuring mechanism, in particular to an interface circuit for fiber optic gyroscope combination. Background technique [0002] In order to adapt to the development of spaceflight, the current weapon field is increasingly developing toward smaller size, longer range, and higher precision. Therefore, higher requirements are put forward for sensitive measurement mechanisms, and further requirements are smaller and better. Then The fiber optic gyro combination used in this field must have the characteristics of small size and fast power-on start-up. [0003] For the fiber optic gyroscope combination, the commonly used interface circuit has the following two disadvantages: [0004] One is that the volume is too large. The current input signal processing method is conventionally realized by an IF circuit. Although the circuit has high precision, its volume is relatively large, which cannot meet the smal...

AI Technical Summary

Problems solved by technology

[0004] One is that the volume is too large. The current input signal processing method is usually implemented by an IF circuit. Although the circuit has high precision, its volume is relatively large, and it cannot meet the small volume requirements of the inertial measurement combination.

[0005] The second is that the power-on startup is slow, and it needs to read the program to run automatically. The conventional method uses serial loading. This method causes the power-on startup time to be relatively slow and cannot fully meet the rapidity requirements of the weapon field.

[0006] Therefore, the commonly used interface circuits currently have problems such as large size, slow power-on start-up, etc., and it is difficult to meet the requirements for the combination of fiber optic gyroscopes.

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