A communication method for a traffic signal machine

Abstract

The invention discloses a traffic signal machine communication method and belongs to the traffic network safety field. The method is applied to a traffic signal machine control system. The traffic signal machine control system comprises a gateway management system, an upper computer system and at least one signal machine node. The method comprises the following steps that verification information of a first type of safe access gateway and a second type of safe access gateway is set; through the gateway management system, an equipment access list is sent to the first type of safe access gateway and the second type of safe access gateway; the first type of safe access gateway and the second type of safe access gateway establish an encryption communication channel; and the first type of safe access gateway and the second type of safe access gateway transmit communication information passing through an equipment private key signature through the encryption communication channel. Problems that a network is easy to be attacked when being controlled by a traffic signal machine; and control of the traffic signal machine and confidentiality of storage data are difficult to be guaranteed are solved. Effects of increasing confidentiality of traffic signal machine data transmission and guaranteeing safety of the traffic signal machine control system are achieved.

Description

technical field [0001] The embodiment of the present invention relates to the field of traffic network security, in particular to a traffic signal communication method. Background technique [0002] Traffic signals are mainly used for the control and management of urban road traffic signals and are an important part of the traffic system. [0003] The jumping of the signal lights of each color of the traffic signal machine can be realized by timing control or network control. [0004] At present, the domestic traffic signal control network generally rents the network operator's network, and the network operator builds a virtual private network. The traffic signal control system includes the control equipment and the traffic signal. The traffic signal collects the traffic information at the current moment of the location and sends it to the control equipment. The control equipment determines the control strategy according to the traffic state at the current moment. The sign...

AI Technical Summary

Problems solved by technology

[0005] However, there is no reliable technical isolation means and effective area isolation between the network segment of the existing traffic signal control network and other network segments. The equipment in the traffic signal control system is vulnerable to attacks and there are security risks.

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