Terminal access equipment with CAN bus function, application method and device

Abstract

The embodiment of the invention discloses terminal access equipment with a CAN bus function and an application method and device. According to the technical scheme provided by the embodiment of the invention, the processor, the interface module, the controller chip, the first memory, the second memory and the antenna circuit are arranged, and the interface module comprises the CAN interface chip, the RS232 interface chip, the RS485 interface chip and the switch network port chip, so that a multi-interface access form is realized through the interface module; the interface module is provided with the CAN interface chip, so that the access mode of the CAN interface is increased, and the defect that the CAN bus transmission function is not provided in the prior art is overcome; because the first memory stores the encryption and decryption algorithm, the processor encrypts the externally input data and stores the encrypted data in the second memory, the safety guarantee of the data is realized through the encryption and decryption algorithm, and the encrypted data and the encryption algorithm are stored separately.

Description

technical field [0001] The embodiments of the present application relate to the technical field of data communication, and in particular to a terminal access device with a CAN bus function, an application method and a device. Background technique [0002] In substations, the WAPI (Wireless LAN Authentication and Privacy Infrastructure) protocol is often used as a wireless communication method. The WAPI wireless LAN authentication and security infrastructure, as a security protocol, is also a mandatory standard for wireless LAN security in China. Using WAPI as a wireless communication method can access a variety of business terminal equipment, such as dynamic ring equipment, inspection robots, surveillance cameras, etc. [0003] The networking topology of the WAPI system is as follows: figure 1 As shown, it includes terminal access devices, wireless access points, wireless controllers, and certificate authentication servers. In the WAPI system, service terminals need to ac...

AI Technical Summary

Problems solved by technology

Among them, the Ethernet interface is fast, can realize point-to-point communication, and is full-duplex communication, but the cost is high; the RS232 interface can realize point-to-point communication and full-duplex communication, and the cost is low, but the speed is slow; Type network communication, using half-duplex communication mode, the cost is lower, but the speed is also slow

In actual engineering projects, under the requirements of the total project cost, the RS485 bus is usually selected as the access method, thus sacrificing communication efficiency

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