Communication channel management method and system for embedded terminal equipment

Abstract

The invention discloses a communication channel management method and system for embedded terminal equipment. According to the method and the system, a virtual channel manager and a protocol parser manager are added between physical channel interfaces and a message interface of each process; uniform management is carried out on message transmitting and receiving and physical channel states; a corresponding virtual channel object is designed for each physical channel interface required by each process in the terminal equipment; and through combination of information in a physical channel statetable, communication with the processes and the physical channel interfaces is realized through each virtual channel object. All communication is uniformly scheduled and controlled through utilizationof the virtual channel manager, so according to the method and the system, specific operation for physical channels in communication courses of the processes can be hidden to the processes, communication operation procedures are simplified, moreover, the problem that the physical channels are monopolized can be effectively solved, and multichannel concurrent communication also can be realized. According to the communication channel management system provided by the invention, electricity utilization information collection platformization demands in aspects such as concurrency, timelines and expandability can be satisfied.

Description

technical field [0001] The invention relates to the terminal technology for collecting electricity information, in particular to a communication channel management method and system for embedded terminal equipment. Background technique [0002] The power consumption information collection terminal is usually equipped with multiple uplink and downlink channels, and supports multiple communication methods at the same time. The uplink channel is usually configured with physical channels such as Ethernet, wireless public network, wireless private network, and infrared to communicate with the master station or handheld device. The downlink channel is usually configured with RS485, RS232, carrier, ModBus and other physical channels to communicate with lower-level acquisition equipment, smart energy meters and other equipment. [0003] In the traditional channel management method, each application usually maintains and manages these physical channels, and each application processe...

AI Technical Summary

Problems solved by technology

Therefore, this bus-type channel cannot support concurrent communication requirements between applications

In fact, this is a rather serious defect, because it will cause some applications using the physical channel to either be starved, or have to open / close the physical channel frequently, thereby dragging down the overall efficiency and response speed of the system;

[0005] (2) For a message initiated by a lower-level device, such as a status notification, if the message cannot be processed by the application that currently opens the channel, under the existing technology, the message will be discarded by the current application

This will undoubtedly bring higher requirements to the design of the embedded system, and it also needs to occupy more system resources during use, and the processing efficiency is not high

[0006] (3) Existing strategies are difficult to support broadcasting

However, although this solution solves the above-mentioned defects such as the concurrency of bus-type devices, it produces only one valid communication connection for each channel in server mode, etc., new problems

Messages initiated by lower-level devices, such as how to submit status notification messages to the corresponding target applications for processing, have not yet been resolved

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