Onsite-level low-cost redundancy measuring and controlling network based on wired and wireless hot spare redundancy communication

Abstract

The invention discloses an onsite-level low-cost redundancy measuring and controlling network based on wired and wireless hot spare redundancy communication, which comprises a host computer and a slave computer, wherein the slave computer is polled / controlled by the host computer; the states of the slave computer and a monitored object of the slave computer are obtained or a corresponding controlled object is controlled by the slave computer; the wired communication and wireless communication of the host computer and the slave computer are both on-line during a working process; one of the communication modes is selected by the host computer, so as to communicate the host computer with the slave computer; preferably, the wired mode is selected for communication; and the network is a reliable onsite measuring and controlling network with zero-cost communication operation. No additional redundancy management equipment is required; the cost is saved; a redundancy communication network structure is simplified; and the installment of the system is especially simple and quick, so that the installing cost is low and the period is short.

Description

technical field [0001] The invention relates to a field-level low-cost redundant measurement and control network based on wired and wireless hot standby redundant communication. Background technique [0002] In the field of industrial applications, the field bus control system FCS has matured and gradually replaced the original distributed control system DCS. FCS has the advantages of simple installation, high degree of digitalization, fault diagnosis and protection operation according to default values. It can save costs for users, improve the level of automation and the level of intelligence of the system. [0003] However, most field buses use a bus-type structure. If one of the nodes goes offline, the bus communication may be interrupted, and the host in the bus network will not be able to access the nodes after the interruption point, resulting in a high risk of communication reliability. Therefore, some buses adopt a ring network structure. When a node goes offline, ...

AI Technical Summary

Problems solved by technology

[0010] 3) The operating cost is high. If this solution is used to build a measurement and control platform for the industrial station system, each node in the station needs an IP or a SIM card for mobile communication. Otherwise, the instrument points need to be aggregated to On a device, connect the device to the network

In this case, cabling and installation is still required from the meter to the equipment connected to the network

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