Data transmitting method for lower computer in sewage treatment plant

Abstract

The invention discloses a data transmitting method for a lower computer in a sewage treatment plant. The data transmitting method comprises the steps as follows: running state information of each device is collected; the running state information of each device belonging to the same device type is utilized to generate data blocks in each processing stage respectively; and a plurality of the data blocks are transmitted respectively. In the data transmitting method, the data blocks are introduced and used as a bridge between a host computer and the lower computer so as to lead the program design of the host computer to be independent from hardware physical addresses of the lower computer, so that the program designs of the lower computer and the host computer can be carried out at the same time, and the program developing and debugging time for a whole control system is saved; in addition, the program design of the host computer does not need to be performed again when the connection between each device and a hardware interface of the lower computer is changed, so that the universality of the control system is improved, and the workload of follow-up maintenance is reduced.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a data transmission method for a lower computer in a sewage treatment plant. Background technique [0002] With the acceleration of urban construction, the discharge of urban sewage is also increasing, and the number and scale of sewage treatment plants are limited. In order to expand the sewage treatment capacity of sewage treatment plants, it is an inevitable choice to improve the automation and intelligence of the sewage treatment process. [0003] The control system of the current sewage treatment plant includes the lower computer and the upper computer. The lower computer is responsible for directly controlling various equipment in the sewage treatment plant and collecting the operating status information of various equipment. The signal output terminals of various equipment are directly connected to the hardware interface of the lower computer. The upper...

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Problems solved by technology

In addition, the hardware interface of the lower computer connected to each device directly determines the specific storage location of the running status information output by the device in the storage space of the lower computer. When the device connected to the hardware interface of the lower computer changes, the lower computer storage The corresponding storage location in the space stores the operating status information of the equipment after the change. Since the upper computer is currently programmed for the operating status information of each device stored in the storage space of the lower computer, when the equipment and the lower computer When the connection relationship of the hardware interface changes, it is necessary to reprogram the upper computer according to the specific storage location of the operating status information of each device after the change in the storage space of the lower computer, resulting in poor versatility of the control system. When the control system is applied to other For sewage treatment plants, it is necessary to reprogram the upper computer

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