Sensor signal acquisition system based on variable topology switch matrix

Abstract

The invention belongs to the field of communication and sensor signal detection, and discloses a sensor signal acquisition system based on a variable topology switch matrix. The acquisition system comprises a control module, a sensor, a multiplexing switch module, a variable topology switch module, a signal acquisition module and a data processing module, wherein the multiplexing switch module isconnected with the sensor, and each pin on the sensor corresponds to a plurality of leads in the multiplexing switch module; the variable topology switch module enables different leads to be combinedthrough the combination and opening and closing of different switches, thereby achieving the measurement of different physical quantities; and a controller is used for controlling on-off of each switch in the multiplexing switch module and the variable topology switch module. According to the invention, the test problem caused by non-correspondence of acquisition and measurement ports and the sensor pins is solved, free switching of each function by the sensor according to the working condition is realized, the complexity of a measurement module is reduced, the structure is simple, and the useis more convenient.

Description

technical field [0001] The invention belongs to the field of communication and sensor signal detection, and more specifically relates to a sensor signal acquisition system based on a variable topology switch matrix. Background technique [0002] At present, some sensors integrate multiple sensing units in one sensor. Through the combination of sensor pins and time-division multiplexing of pins, a single sensor can realize multiple measurement functions at different times and realize a single sensor. The sensor perceives multiple physical quantities; correspondingly, in order to realize the switching measurement of multiple functions of the sensor, there are more requirements for the measuring instrument at the back end. The measuring instrument must first be able to contain a variety of measurement modules, and because different sensors The combination of pins is not the same, the measuring instrument must be able to combine the pins of the sensor arbitrarily, and connect to...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a sensor signal acquisition system based on a variable topology switch matrix. The complex combination of pins and the multiplexing functions of a single pin make it difficult to switch test functions, as well as the problem of difficult measurement caused by different measurement line systems and different measurement principles under different measurement functions

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