Differential signal out-of-band instruction transmission circuit, chip and electronic equipment

Abstract

The invention provides a differential signal out-of-band instruction transmission circuit, a chip and electronic equipment, and the differential signal out-of-band instruction transmission circuit comprises a signal reading module which is used for reading a differential signal and a signal control module. The differential signal comprises a normal communication signal and an out-of-band instruction signal. The out-of-band instruction signal has a specified frequency. The signal control module is used for separating the out-of-band signal from the differential signal according to a signal separation condition given by the specified frequency so that a control signal for controlling the conduction of a switching device is formed. The differential signal out-of-band instruction transmissioncircuit, the chip and the electronic equipment are not easy to interfere, the processed signal is more stable, and the differential signal out-of-band instruction transmission circuit, the chip and the electronic equipment are suitable for a switch control circuit with higher safety requirements.

Description

technical field [0001] The invention belongs to the technical field of circuits, and relates to a transmission circuit, in particular to a transmission circuit, a chip and electronic equipment for differential signal out-of-band instructions. Background technique [0002] In the industrial environment, especially in the environment of variable frequency drive, some important weak current switch control signals are easily interfered by the external environment, which will affect the on-off of some important switching devices, such as relays, contactors, etc., and then cause serious damage. security incident. [0003] Therefore, how to provide a transmission circuit, chip and electronic equipment for a differential signal out-of-band command to solve the problem that the control signals of some important switching devices are easily interfered by the external environment in the harsh environment of the prior art, resulting in the on-off being affected. Influence, and then cau...

AI Technical Summary

Problems solved by technology

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a transmission circuit, chip and electronic equipment for differential signal out-of-band commands, which are used to solve the problem of controlling some important switching devices in harsh environments in the prior art. The signal is extremely susceptible to interference from the external environment, resulting in affected on-off, which in turn leads to serious safety accidents

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