Multi-channel signal acquisition and processing system with strong anti-interference ability

Abstract

The invention discloses a multi-channel signal acquisition and processing system with a strong anti-interference ability, comprising an MCU main control circuit. The MCU main control circuit is connected with a digital input circuit, and interface and storage circuits. The MCU main control circuit comprises a chip U15. The model of the chip U15 is STM32F103V. The digital signal input circuit includes a photocoupler. The interface and storage circuits include a Bluetooth interface circuit, a 485 bus interface circuit, a CAN bus interface circuit, a CH340 serial port drive and interface circuit.The system has the following advantages: the system is designed for multiple application scenarios, can input digital analog signals through multiple channels, isolates the interference of large current on the circuit system, and realizes that input signals do not interfere with each other; and the system has multiple communication interfaces and innovatively extends the Bluetooth interface, manybus interfaces can adapt to different systems, and the applicability and scalability are strong.

Description

technical field [0001] The invention relates to the field of multi-channel analog and digital signal acquisition and processing, and control output, in particular to a multi-channel signal acquisition and processing system with strong anti-interference ability. Background technique [0002] With the development of the information society, there is a demand for display and wireless transmission after the collection and processing of weak analog and digital signals in many application scenarios. In most application scenarios, the signals after signal acquisition and processing are transmitted through data lines. However, in many scenarios, many signal acquisition lines and power lines are distributed in the working area, which may not only cause interference to signal transmission , and the lines scattered under the feet will become unsafe factors, causing inconvenience and danger, resulting in the following shortcomings in the current signal acquisition system: [0003] 1. T...

AI Technical Summary

Problems solved by technology

In most application scenarios, the signals after signal acquisition and processing are transmitted through data lines. However, in many scenarios, many signal acquisition lines and power lines are distributed in the working area, which may not only cause interference to signal transmission , and the lines scattered under the feet will become unsafe factors, causing inconvenience and danger, resulting in the following shortcomings in the current signal acquisition system:

[0003] 1. There are few application scenarios, single-channel digital and analog signal input, and the input signal cannot be processed by multiple algorithms;

[0004] 2. The input of digital and analog signals interferes with each other, and the anti-interference ability is poor;

[0005] 3. The communication interface is single, there is no Bluetooth communication function, it cannot adapt to different systems, and the applicability and scalability are poor

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