Anti-interference repeater based on CAN bus

Abstract

The invention discloses an anti-interference repeater based on a CAN bus, and mainly relates to the technical field of communication equipment. The anti-interference repeater comprises a shell and an interface; a relay component, a power supply component, a signal input component and a signal output component are arranged in the shell; the relay component, the power supply component, the signal input component and the signal output component are connected in series; the interface is arranged on the surface at one side of the shell, and an automatic warning device and a self-luminous layer are arranged at one side of the shell with the interface; the self-luminous layer is made of long persistent phosphors; the relay component comprises a CPU, a receiving relay unit and a sending relay unit, wherein a photoelectric isolator is arranged on the sending relay unit; a shielding net cover is arranged on the shell surface, the shielding net cover comprises an insulating layer and a protective layer; the protective layer is made of an acid-alkali corrosion resistant layer, a heat preservation layer and a wear-resisting layer. The repeater disclosed by the invention is strong in interference resistance, long in service life, and capable of guaranteeing the long-time safe and stable operation of the signal transmitting work.

Description

technical field [0001] The invention relates to the technical field of communication equipment, in particular to an anti-jamming repeater based on CAN bus. Background technique [0002] A repeater is a connection device that works on the physical layer and is suitable for the interconnection of two types of networks that are exactly the same. Its main function is to expand the distance of network transmission by resending or forwarding data signals. In fact, the network connected by repeaters is equivalent to a larger network composed of the same wire. Repeaters can also connect networks of different transmission media (10Base 5 and 10Base 2), which are mostly used in data link In the interconnection of the same LAN above the road layer. [0003] In recent years, with the continuous development of science and technology, people have higher and higher technical requirements for repeaters. However, the existing repeaters based on CAN bus still have the following defects: [...

AI Technical Summary

Problems solved by technology

[0004] 1. The communication distance is short and the anti-interference ability is poor;

[0005] 2. The repeater cannot respond in time when there is a fault in operation, so it cannot guarantee the safe and stable signal transmission work;

[0006] 3. After a long time of use, the surface of the shell is corroded and worn seriously, the maintenance is complicated and cumbersome, and it cannot work stably in the harsh industrial environment, thus greatly shortening the service life of the repeater

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