In the sewage treatment monitoring project, the sewage treatment monitoring systems involved, many required unattended equipment or monitoring points, are affected by factors such as the terrain, climate, and monitoring range, and they also require the equipment to have better mobility and expandable connectivity. Equipment and equipment are easy to maintain, so how can the industrial control platform of the performance really meet the application in the sewage treatment system?
Second, the system introduced
What kind of control platform does the monitoring point need to meet system needs?
1. Maintain a simple, stable control platform that can adapt to unattended applications in harsh environments.
2. It is required that the mechanism be compact and easy to install inside the equipment cabinet. The fanless system ensures the stability and high efficiency of the system. At the same time, it can be installed in a narrow space to solve the heat dissipation problem of the machine.
3. Powerful processing capabilities, satisfying the data processing capacity and control, and connecting various monitoring devices and modules.
4. Closed, earthquake resistant and adaptable to the environment.
Third, the system structure
Control System Design (System Hardware Configuration)
The system uses the control of the upper and lower machines. The upper computer adopts industrial PC or industrial-grade ARK embedded industrial computer 3000 series and communicates with the lower computer through 485. The upper computer mainly displays the process flow screen, collects the parameter values ​​of each point in real time, and dynamically displays the actual values ​​on the screen. , Automatically save the value of various points, automatic alarm, statistical printing, statements and so on. The lower machine adopts ARK embedded industrial control machine 5280 plus professional acquisition card to realize the acquisition controller, which is composed of various AI, AO, DI, DO and other card components. The on-site signal passes through the cable and is transmitted to the signal processing card to be processed into a 1~5V DC signal that is convenient for computer processing. After the A/D conversion, it is uploaded to the host computer through 485. The input signal of each loop of the control loop is compared with the given signal downlinked by the upper computer.
System Solution Topology
Advantech ARK series industrial computer features:
Stability: able to work outdoors 24 hours without interruption, the stability of the machine can meet its requirements.
High performance: Rich I/O connection performance and excellent network transmission quality provide performance guarantee.
Anti-jamming: The fanless nature makes outdoor temperature and dust impact on the computer not to be ignored during the season. Advantech's entire machine has undergone rigorous high and low temperature tests, as well as various other interference tests.
Small size: The whole machine only needs a small space, which has a positive influence on the physical volume of the equipment cabinet and the like.
Fourth, system advantages
Compared with traditional monitoring methods, this system realizes the automatic extraction and random extraction of the data on the amount of water and physical and chemical parameters of sewage pollution point, the automatic extraction and monitoring of the operation of sewage treatment equipment, and the alarm under abnormal conditions, and the main sewage discharge. Physical and chemical indicators exceeded the automatic alarm, automatic billing of sewage charges, and data statistics reports were automatically generated. At the same time, the system is low in operating cost, the system is easy to expand, and data interfaces are left. By configuring or changing different sensors and collecting atmospheric parameters and urban noise parameters, the system is also suitable for atmosphere and noise monitoring, and wired MODEM and wireless data transmission radio data. Compared with transmission, this system is more advanced in technology.
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