Sensor data acquisition processing system

Abstract

The invention discloses a sensor data acquisition processing system, including a main control circuit. A first operational amplifier circuit and a second operational amplifier circuit are connected with the main control circuit. The first operational amplifier circuit is connected with an analog switch control circuit. The second operational amplifier circuit is connected with a sensor acquisitioncircuit. One end of the sensor acquisition circuit is connected with a sensor. The main control circuit is further connected with a 485 communication circuit. One end of the 485 communication circuitis connected with the main control circuit, and the other end of the 485 communication circuit is connected with an upper computer. According to the sensor data acquisition processing system, resistance and voltage are converted by a bridge circuit, after a signal is adjusted by the first operational amplifier circuit, a level signal is converted to a frequency signal by the analog switch controlcircuit and the second operational amplifier circuit, a single 5 V power supply is used to power the entire system, and thuslocalization of electrical elements of a whole board is achieved. Automaticcalibration to a standard resistance value can be achieved through the analog switch control circuit by using a domestic brand STC 8-bit MCU as a main control chip.

Description

technical field [0001] The invention relates to the technical field of sensor data processing, in particular to a sensor data acquisition and processing system. Background technique [0002] The process of automatically collecting non-electricity or electric quantity signals from analog and digital units under test such as sensors and other equipment under test and sending them to the host computer for analysis and processing is sensory data acquisition. The data acquisition system is combined with a computer-based or other special-purpose test platform. However, most of the existing sensing data acquisition systems have limitations, such as only one transmission line, weak anti-interference ability, etc., and many devices used It is produced abroad, and it is not easy to replace in case of failure, and it will have a certain impact due to the different communication methods of the main control chip at home and abroad. [0003] Therefore, it is necessary to design a sensing...

AI Technical Summary

Problems solved by technology

[0002] The process of automatically collecting non-electricity or electric quantity signals from analog and digital units under test such as sensors and other equipment under test and sending them to the host computer for analysis and processing is sensory data acquisition. The data acquisition system is combined with a computer-based or other special-purpose test platform. However, most of the existing sensing data acquisition systems have limitations, such as only one transmission line, weak anti-interference ability, etc., and many devices used It is produced abroad. In case of failure, it is not easy to replace, and due to the different communication methods of the main control chip at home and abroad, it will have a certain impact

Images