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Silicon micromechanical gyroscope signal processing circuit

A signal processing circuit and silicon micromechanical technology, applied in the field of microelectronics, can solve problems such as affecting accuracy, heavy calculation workload, and poor working conditions of instruments, and achieve improved work efficiency, high measurement accuracy, good anti-interference and reliability effect

Inactive Publication Date: 2018-03-09
陶崇立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The latter saves the platform, so the structure is simple, the volume is small, and the maintenance is convenient, but the working conditions of the instrument are not good (affecting the accuracy), and the calculation workload is large

Method used

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  • Silicon micromechanical gyroscope signal processing circuit
  • Silicon micromechanical gyroscope signal processing circuit
  • Silicon micromechanical gyroscope signal processing circuit

Examples

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with drawings and embodiments.

[0021] Such as figure 1 , The gravity accelerometer circuit uses the MAX2312 chip, which is a dual-axis, low-noise, and low-price acceleration sensor produced by a standard submicron CMOS manufacturing process. Internal mixed-signal processing circuitry makes it a complete sensing system. The sensitivity of MAX2312 is 312mV / g when the power supply voltage is +5V at 250 degrees, and the measurement range of the acceleration sensor can be extended from ±lg to ±10g. In terms of PCB board layout, try to align the gravity accelerometer and the silicon gyroscope, and make the sensitive axes of the two parallel, and the center device is the accelerometer.

[0022] Such as figure 2 , The Schmitt trigger circuit is composed of NC7Z14. After the input voltage Vin reaches a certain value, the Schmitt trigger flips from the static state to the working state; after the input vol...

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PUM

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Abstract

A silicon micromachined gyroscope signal processing circuit is suitable for the field of microelectronics. The signal processing circuit is composed of a gravitational accelerometer circuit, a Schmitt trigger circuit, a bridge circuit, a differential instrumentation amplifier circuit and a band-pass filter circuit. The circuit has compact structure, small size, high measurement accuracy, stable operation, good adaptability, improved work efficiency, and good anti-interference and reliability.

Description

Technical field [0001] The invention relates to a silicon micromechanical gyroscope signal processing circuit, which is suitable for the field of microelectronics. Background technique [0002] Inertial technology is a technical science that detects the attitude and position of moving objects based on Newton's law of inertia. The equipment that makes up the inertial navigation system is installed in the aircraft. It does not rely on external information when working, nor does it radiate energy to the outside world. It is not easily disturbed. It is an autonomous navigation system. An inertial navigation system usually consists of an inertial measurement device, a computer, a control display, etc. Inertial measurement devices include accelerometers and gyroscopes, also known as inertial navigation combinations. Three angular velocity gyroscopes are used to measure the three axial angular velocities of the aircraft; three accelerometers are used to measure the three axial li...

Claims

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Application Information

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IPC IPC(8): G01C19/5776
CPCG01C19/5776
Inventor 陶崇立
Owner 陶崇立
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