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China's water quality monitoring has long been used in the monitoring of the concentration of pollutants, but it still does not constitute a complete monitoring system. It can only be called the instrument monitoring method in water quality monitoring. As a result, data acquisition, recording, communication, and control were developed on the basis of existing instruments, and these functions were fully integrated to form an online water quality monitoring system. Among them, the monitoring recorder is installed at the monitoring site for data collection and processing, and the collected data of various standards and formats is converted into a standard data format, sent to the upper management software via the Internet or a local area network, and the data is stored in In the database.
The following is the water quality online monitoring system that has been developed and more advanced in China:
(1) Multi-point online water quality monitoring system: The water quality online monitoring system can simultaneously monitor the water quality of six different monitoring points on-line, and each of the monitoring points can simultaneously monitor its dissolved oxygen, temperature, conductivity, pH, oxidation-reduction potential Six parameters, such as salinity, reduce the cost of the entire system and the probability of faults, as well as the workload of routine maintenance, so that the overall cost-effectiveness of the system is greatly improved.
(2) Application of computer monitoring technology in aquaculture: MCS (51) series 89C51 single-chip microcomputers are used to constitute the host computer and data acquisition slaves, and a Pentium II PC is installed in the testing center to process the collected data further. , and display the output with a rich chart. The system can measure a variety of parameters of a variety of aquaculture ponds, can understand the water quality situation at any time, and increase the economic benefits of aquaculture.
(3) IPC-based online water quality monitoring virtual instrument: This system adopts the design pattern of industrial control computer instrument (virtual instrument) with virtual instrument panel, changes the design concept of traditional chemical test instrument, and successfully developed a water quality online monitoring virtual instrument. The system has the characteristics of fast response, large capacity, friendly man-machine interface, easy operation, rich and beautiful output graphics. Thanks to the modular design method, it is easy to expand functions and system upgrades, it can also be multi-machine communication and networking to form a group control system, with multiple component detection and other advantages.
(4) The water quality online monitoring system based on BP neural network: using arbitrary neural network expression capabilities to establish parameters, self-learning PID control algorithm to control the dissolved oxygen in the water environment, through the learning of system performance, thereby achieving The best combination of PID control is the control of optimal dissolved oxygen. At the same time, it adopts mobile GPRS wireless communication technology for remote data collection and monitoring, which facilitates remote monitoring of users in different places.
The following is the water quality online monitoring system that has been developed and more advanced in China:
(1) Multi-point online water quality monitoring system: The water quality online monitoring system can simultaneously monitor the water quality of six different monitoring points on-line, and each of the monitoring points can simultaneously monitor its dissolved oxygen, temperature, conductivity, pH, oxidation-reduction potential Six parameters, such as salinity, reduce the cost of the entire system and the probability of faults, as well as the workload of routine maintenance, so that the overall cost-effectiveness of the system is greatly improved.
(2) Application of computer monitoring technology in aquaculture: MCS (51) series 89C51 single-chip microcomputers are used to constitute the host computer and data acquisition slaves, and a Pentium II PC is installed in the testing center to process the collected data further. , and display the output with a rich chart. The system can measure a variety of parameters of a variety of aquaculture ponds, can understand the water quality situation at any time, and increase the economic benefits of aquaculture.
(3) IPC-based online water quality monitoring virtual instrument: This system adopts the design pattern of industrial control computer instrument (virtual instrument) with virtual instrument panel, changes the design concept of traditional chemical test instrument, and successfully developed a water quality online monitoring virtual instrument. The system has the characteristics of fast response, large capacity, friendly man-machine interface, easy operation, rich and beautiful output graphics. Thanks to the modular design method, it is easy to expand functions and system upgrades, it can also be multi-machine communication and networking to form a group control system, with multiple component detection and other advantages.
(4) The water quality online monitoring system based on BP neural network: using arbitrary neural network expression capabilities to establish parameters, self-learning PID control algorithm to control the dissolved oxygen in the water environment, through the learning of system performance, thereby achieving The best combination of PID control is the control of optimal dissolved oxygen. At the same time, it adopts mobile GPRS wireless communication technology for remote data collection and monitoring, which facilitates remote monitoring of users in different places.
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