Gravity sensor high-precision temperature measurement circuit in self-correction mode and compensation method thereof
By using the high -precision temperature measurement circuit of self -corrected mode in the gravity sensor, using multi -point temperature drift correlation and sliding median filtering treatment, the problem of low temperature measurement accuracy and insufficient temperature drift compensation in existing technologies, realized Precision compensation for high precision temperature and sensor output.
Patent Information
- Application Number
- CN202411519118.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-01-28
AI Technical Summary
In the existing high-precision inertial navigation and gravity measurement instruments, the temperature measurement technology has low measurement accuracy, poor environmental adaptability, and failure to effectively consider the temperature drift characteristics and adopt compensation methods, resulting in temperature measurement deviation and sensor output deviation.
The high -precision temperature measurement circuit with a self -corrected modular gravity sensor, including precision voltage reference chips, ground -type constant current generators, three -way simulation switches, multi -road thermist resistance temperature circuit, AD converter, ARM processor, and two two Class computing amplifier to achieve temperature compensation through multi -point temperature drift correlation, and use sliding median filtering to remove invalid data.
A high -precision temperature and high -precision temperature control effect is achieved, the output deviation of the sensor caused by temperature changes is eliminated, the accuracy, flexibility and timeliness of measurement are improved, and the self -correction function and long -term stability.
Smart Images
Figure CN119374750A_ABST