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
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[0020] The present invention will be further described below with reference to the drawings and embodiments.
[0021] Such as figure 1 , The gravity accelerometer circuit uses the MAX2312 chip, which is a dual-axis low-noise low-cost acceleration sensor produced by a standard sub-micron CMOS manufacturing process. The internal mixed signal processing circuit makes it a complete sensing system. MAX2312 has a sensitivity of 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 the layout of the PCB board, try to position the gravity accelerometer and the silicon gyroscope as much as possible, and make the sensitive axes of the two parallel, and the device in the center 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 stat...
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