Communication interference defense circuit

Abstract

The invention provides a communication interference defense circuit. The communication interference defense circuit comprises two groups of circuits with the same structure, wherein the first group of circuits comprises a first differential amplification circuit, a first delay amplification circuit, a first comparison circuit and a first interlocking circuit which are sequentially connected from an input end to an output end; and the second group of circuits comprises a second differential amplification circuit, a second delay amplification circuit, a second comparison circuit and a second interlocking circuit which are sequentially connected from the input end to the output end. The input end of the first differential amplification circuit is connected with a first communication port, the output end of the first differential amplification circuit is connected to the first input end of the first interlocking circuit after sequentially passing through the first delay amplification circuit and the first comparison circuit, and the second input end of the first interlocking circuit is connected with the second output end of the second interlocking circuit; the first output end of the first interlocking circuit is connected with the second communication port, and the second output end of the first interlocking circuit is connected to the second input end of the second interlocking circuit. The communication anti-interference problem in the duplex communication signal transmission process can be solved.

Description

technical field [0001] The invention relates to the technical field of communication circuits, in particular to a communication interference defense circuit. Background technique [0002] In the current era of rapid development of electronic products, the communication transmission of electrical and electronic equipment is also changing day by day. The protocol is becoming more and more complex, the semaphore is getting bigger and bigger, and the communication range is getting wider and wider. Especially between electrical products, they exchange signals with each other all the time. [0003] In this context, the correct transmission of communication signals and the reduction of bit error rate are the key to ensure the normal operation of the equipment. And because of this, there are also a variety of methods, such as various checks, various communication CAN, 485, etc., all of which are improving the accuracy of communication, transmission volume and transmission distance...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems raised by the background technology, the present invention provides a communication interference defense circuit, which can solve the communication anti-interference problem in the duplex communication signal transmission process

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