A 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 includes 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 is connected to the sensor, and each pin on the sensor corresponds to multiple Multiple leads in the multiplexing switch module; the variable topology switch module opens and closes through the combination of different switches, so that different leads are combined to achieve the measurement of different physical quantities; the controller is used to control the multiplexing switch module and variable topology Opening and closing of each switch in the switch module. The invention solves the test problem caused by the incompatibility between the acquisition and measurement port and the sensor pin, realizes the free switching of various functions of the sensor according to the working conditions, reduces the complexity of the measurement module, has a simple structure, and is more convenient to use.

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

Images