Multichannel high-precision temperature acquisition method

Abstract

The invention discloses a multichannel high-precision temperature acquisition method, which belongs to the field of missile-borne computer analog acquisition and processing. In a strapdown inertial navigation system, the change of temperature reduces the output precision of a fiber optic gyroscope. A constant temperature environment needs to be provided, and when the constant temperature environment is provided, the current environment temperature needs to be detected. According to the currently-adopted temperature analog acquisition method, temperature acquisition is carried out on a single point; an ADC acquisition controller is a DSP or a single chip microcomputer, and the real-time performance is poor; a temperature data transmission protocol is simple, and when the data are transmitted in a harsh environment, data distortion happens. A test is made already in a certain-type missile-borne strapdown inertial navigation system, the temperature of the strapdown inertial navigation system can be acquired and outputted in a real-time and high-precision mode, the operation is mature and stable, and good effects can be achieved.

Description

technical field [0001] The invention discloses a multi-channel high-precision temperature acquisition method, which belongs to the field of acquisition and processing of missile-borne computer analog quantities. Background technique [0002] In the strapdown inertial navigation system, the core components of the fiber optic gyroscope are sensitive to temperature, and changes in temperature will cause the reciprocity effect of the fiber optic gyroscope, thereby reducing the output accuracy of the fiber optic gyroscope. In order to solve the influence of temperature on the fiber optic gyroscope, it is necessary to provide a "constant temperature" environment. To provide a "constant temperature" environment, it is necessary to detect the current ambient temperature. The current temperature collection method is to single point or a few particularly limited points. Carry out temperature acquisition; ADC acquisition controller is DSP or single-chip microcomputer, which has poor re...

AI Technical Summary

Problems solved by technology

In order to solve the influence of temperature on the fiber optic gyroscope, it is necessary to provide a "constant temperature" environment. To provide a "constant temperature" environment, it is necessary to detect the current ambient temperature. The current temperature collection method is a single point or a few particularly limited points. Carry out temperature acquisition; ADC acquisition controller is DSP or single-chip microcomputer, which has poor real-time performance; the temperature data transmission protocol is relatively simple, and data distortion may occur when transmitting data in harsh environments

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