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Gyroscope analog circuit and gyroscope

A technology of analog circuit and gyroscope, which is applied in the field of gyroscope, can solve the problem of low precision of gyroscope, and achieve the effect of improving accuracy

Pending Publication Date: 2022-06-07
BEIJING CHENJING ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a gyroscope analog circuit and a gyroscope to solve the technical problem of low precision of the gyroscope in the prior art

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Embodiment Construction

[0029] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention. , not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Quartz MEMS gyroscopes are characterized by light weight, small size, strong shock resistance, long life, low power consumption, fast response, strong environmental adaptability, and are suitable for mass production. Affecting the performance of the gyro includes the selection of components, the excellence of the gyro processing circuit, the improvement of the error compensation technology and the precision ...

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Abstract

The invention provides a gyroscope analog circuit and a gyroscope. The gyroscope analog circuit comprises a demodulation sub-circuit, a signal processing sub-circuit and a signal processing sub-circuit, the demodulation sub-circuit comprises a differential demodulation circuit and a differential low-pass filter circuit. According to the gyroscope analog circuit and the gyroscope provided by the invention, in the demodulation sub-circuit, a differential low-pass filtering differential demodulation method is used to counteract direct current output generated by an analog switch, so that the precision of the gyroscope is improved.

Description

technical field [0001] The invention relates to the technical field of gyroscopes, in particular to a gyroscope analog circuit and a gyroscope. Background technique [0002] Quartz Micro-Electro-Mechanical System (MEMS) gyroscope has the outstanding characteristics of light weight, small size, strong impact resistance, long life, low power consumption, fast response, strong environmental adaptability and suitable for mass production. and widely used. [0003] The key sensitive components of the quartz MEMS inertial gyroscope - the driving electrode (located in the driving fork) and the detection electrode (located in the detection fork) on the double-ended quartz MEMS tuning fork to realize the excitation of the driving mode and the sensitivity of the detection mode signal . Quartz MEMS gyro circuits are generally composed of drive circuits, readout / detection circuits, demodulation circuits, filter amplification and output circuits, and error compensation circuits. The dr...

Claims

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Application Information

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IPC IPC(8): G01C19/5614G01C19/5621
CPCG01C19/5614G01C19/5621
Inventor 刘洋张永斌汤一韩雪飞高亚楠张祐齐张旭东齐芳艺
Owner BEIJING CHENJING ELECTRONICS