CN205721297U - Water treatment plant based on PLC monitoring system - Google Patents

Abstract

The utility model discloses a kind of water treatment plant based on PLC monitoring system, it relates to the automatic control technology field of water treatment plant, tank gage is arranged on the top in filter tank, the analog quantity information gathered by tank gage sends S7 200PLC to by Analog input mModule, communication is realized by EM277 module between S7 200PLC and S7 200PLC, in the way of PROFIBUS DP, communication is realized between S7 200PLC and S7 300PLC, S7 300PLC is connected with host computer by Ethernet interface, just can realize the monitoring to filter tank liquid level on host computer.This utility model can realize the long-range monitoring to filter chamber of water treatment plant liquid level, it is to avoid the inconvenience that manual operation brings, and decreases manual operation, improves work efficiency, easy to use, easy and simple to handle.

Description

based on PLC water purification plant monitoring system

technical field

The utility model relates to a PLC-based water purification plant monitoring system, which belongs to the technical field of automatic control.

Background technique

With the rapid development of urbanization, the demand for tap water in urban areas is also increasing. There are a large number of filters and a large amount of data to be collected, resulting in a very labor-intensive manual timing narrative and manual operation. Staff often Untimely or wrong operation will cause waste of drinking water resources and inaccurate detection data, and even safety accidents may occur, affecting the urban water supply and the normal life of citizens.

In order to facilitate the monitoring of the water purification plant filter, it is necessary to study a set of PLC-based water purification plant monitoring system in order to improve work efficiency, reduce labor intensity of workers, and improve the efficiency of the water plant.

Contents of the invention

In view of the above problems, the technical problem to be solved by the utility model is to provide a PLC-based water purification plant monitoring system.

The utility model is a PLC-based water purification plant monitoring system, which includes a liquid level meter, S7-200PLC, analog input module, EM277 module, S7-300PLC and a host computer; the liquid level meter is installed above the filter tank , the analog information collected by the liquid level meter is transmitted to the S7-200PLC through the analog input module, the communication between the S7-200PLC and the S7-200PLC is realized through the EM277 module, and the PROFIBUS DP is used between the S7-200PLC and the S7-300PLC To achieve communication, S7-300PLC is connected to the upper computer through the Ethernet port, and the monitoring of the filter tank liquid level can be realized on the upper computer.

Preferably, the communication between the S7-200PLC and the S7-200PLC through the EM277 module needs to use a DP connector.

Preferably, the communication between the S7-200PLC and the S7-300PLC in the form of PROFIBUS DP needs to use a DP connector.

The beneficial effects of the utility model are: the remote monitoring of the liquid level of the filter tank of the water purification plant can be realized, the inconvenience caused by manual operation is avoided, the manual operation is reduced, the work efficiency is improved, and the operation is convenient and convenient.

Description of drawings:

For ease of illustration, the utility model is described in detail by the following specific implementation and accompanying drawings.

Fig. 1 is the working structure schematic diagram of the present utility model;

Figure 1 mainly includes: liquid level meter, S7-200PLC, analog input module, EM277 module, S7-300PLC and host computer.

detailed description:

In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be described below by taking specific implementation examples shown in the accompanying drawings as examples. However, it should be understood that these descriptions are only exemplary and not intended to limit the scope of the present invention. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessarily confusing the concept of the present invention.

As shown in Figure 1, this embodiment adopts the following technical solutions: it includes a liquid level meter, S7-200PLC, analog input module, EM277 module, S7-300PLC and host computer; the liquid level meter is installed above the filter tank , the analog information collected by the liquid level meter is transmitted to the S7-200PLC through the analog input module, the communication between the S7-200PLC and the S7-200PLC is realized through the EM277 module, and the PROFIBUS DP is used between the S7-200PLC and the S7-300PLC To achieve communication, S7-300PLC is connected to the upper computer through the Ethernet port, and the monitoring of the filter tank liquid level can be realized on the upper computer.

Further, the communication between the S7-200PLC and the S7-200PLC through the EM277 module needs to use a PROFIBUS DP connector.

Still further, the communication between the S7-200PLC and the S7-300PLC in the form of PROFIBUS DP needs to use a PROFIBUS DP connector.

The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (3)

1. water treatment plant based on PLC monitoring system, it is characterised in that: it comprises tank gage, S7-200PLC, Analog input mModule, EM277 module, S7-300PLC and host computer；Tank gage is arranged on the top in filter tank, the analog quantity information gathered by tank gage sends S7-200PLC to by Analog input mModule, communication is realized by EM277 module between S7-200PLC and S7-200PLC, in the way of PROFIBUS DP, communication is realized between S7-200PLC and S7-300PLC, S7-300PLC is connected with host computer by Ethernet interface, just can realize the monitoring to filter tank liquid level on host computer.

Water treatment plant based on PLC the most according to claim 1 monitoring system, it is characterised in that: the communication realized by EM277 module between described S7-200PLC and S7-200PLC needs to use DP joint.

Water treatment plant based on PLC the most according to claim 1 monitoring system, it is characterised in that: the communication realized in the way of PROFIBUS DP between described S7-200PLC and S7-300PLC needs to use DP joint.