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Signal processing circuit for multi-dimensional force sensor

A multi-dimensional force sensor and signal processing circuit technology, applied in the field of sensor electronics, can solve the problems that are not conducive to the portable application of sensors

Inactive Publication Date: 2020-10-23
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Portable applications that are not conducive to sensors

Method used

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  • Signal processing circuit for multi-dimensional force sensor
  • Signal processing circuit for multi-dimensional force sensor

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Embodiment Construction

[0026] Such as figure 1 As shown, in the present invention, the bridge module of the bridge sends multiple original voltage signals to the instrumentation amplifier module, and the original bridge signal can be amplified by 50 times or 200 times through the instrumentation amplifier and external resistors. After the original voltage signal is processed by the instrument amplifier, the output voltage signal is connected to a dedicated 16-bit multi-channel A / D conversion module to convert the analog voltage signal to be processed into a digital value. The A / D conversion module is connected to the MCU through the SPI bus, and the converted digital result is sent to the MCU for digital signal processing. The force value loaded on the sensor is calibrated, and the decoupling algorithm is produced through the calibrated data. After the MCU decouples the multi-channel data through the degree, the digital signal is sent to other controllers through the CAN communication module, and t...

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Abstract

The invention discloses a signal processing circuit for a multi-dimensional force sensor. According to the signal processing circuit, functional modules such as a transmitter module and a bridging plate module are embedded into a sensor main body, thereby realizing light weight of the sensor, and preventing weak voltage signals from being interfered in a transmission process. Bridging terminals needing to be pasted on an elastic body in the prior art are welded on the bridging plate, so that the area for pasting a strain gage on the elastic body is increased, and the success rate of pasting isincreased. The transmitter module comprises an instrument amplifier circuit, a multi-channel high-speed A / D conversion module, an MCU and a CAN communication module, wherein the instrument amplifiercircuit can amplify a voltage signal to 50 or 200 times, the voltage signal is converted into a digital quantity through the A / D conversion module, then the digital quantity passes through the MCU module, and finally the digital quantity can be sent to other controllers by the CAN module.

Description

technical field [0001] The invention relates to a signal processing circuit for a multi-dimensional force sensor, which is mainly used for the R&D and manufacture of the multi-dimensional force sensor, and belongs to the field of sensor electronics. Background technique [0002] As the core component of sensor signal conditioning and digital processing, multi-dimensional force sensor signal processing circuit plays a very important role. The stability and volume of the signal processing circuit are directly related to the application range and effect of the multi-dimensional force sensor. In the prior art, the multi-dimensional force sensor directly outputs the original bridge voltage value. The original original bridge voltage value is input to the signal conditioning module through a long cable, and the voltage signal is amplified and then sent to the A / D conversion module through the cable, and the analog signal is converted to a digital signal and then connected to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/162G05B19/042
CPCG01L5/162G05B19/0423
Inventor 高明煜高峰林辉品洪明陈超
Owner HANGZHOU DIANZI UNIV
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