Control system and control method of reverse osmosis membrane water purification equipment

Abstract

The invention provides a control system and a control method of reverse osmosis membrane water purification equipment, and belongs to the field of automatic control. According to the control system and the control method of the reverse osmosis membrane water purification equipment, an upper computer communicates with a lower computer through a bus; two RS232 and two RS485 bus communication interfaces are reserved in the lower computer, and the lower computer can also send collected data parameters to a mobile phone of a worker through 4G; a data acquisition module is installed in the water purification equipment, and the data acquisition module comprises a temperature sensor, a pressure sensor, a rainfall sensor, a conductivity sensor and a turbidity sensor; the lower computer takes a single chip microcomputer STC15W4K56S4 as a control center, and the control center is connected with a power supply circuit, an external clock circuit, an MCU monitoring circuit, a storage circuit, a relay driving circuit, a giant control GRM2000 and an alarm circuit; and the relay driving circuit is connected with an electric valve and an electromagnetic pump.

Description

technical field

[0001] The invention relates to a control system and a control method of reverse osmosis membrane water purification equipment. Background technique

[0002] Water is not only a necessity in human life and production, but also has a very important impact on the development of society and economy. Among them, the cleanliness of water is particularly important for the use of water. To ensure people's normal life and work, it is necessary to ensure the stable operation of the water supply system. After long-term development and improvement, tap water production technology has been very mature at home and abroad, and there are many methods for tap water treatment. However, judging from the actual development at present, it is still based on the traditional water treatment technology to carry out coagulation, sedimentation, filtration and disinfection of water and other treatment operations. Automatic monitoring and processing cannot be performed. Contents of ...

Examples

specific Embodiment approach 1

[0027] A control system of reverse osmosis membrane water purification equipment in this embodiment, such as figure 1 As shown, its composition includes an upper computer 1, a mobile phone 2, a lower computer 3, and a data acquisition module. Among them, the upper computer 1 is the computer on site of the water purification equipment, and the staff can realize user registration, user login, and threshold setting through the upper computer 1. , Check the work status and other operations. On the one hand, the various environmental parameters of the water purification equipment and the rainfall of the water source are collected and transmitted to the host computer 1; The upper computer 1 communicates with the lower computer 3 through the bus; according to the requirements of different sites, the lower computer 3 reserves two RS232 and two RS485 bus communication interfaces, and the staff can choose the appropriate interface for communication according to the actual situation. In...

specific Embodiment approach 2

[0031] The difference from Embodiment 1 is that in the control system of a reverse osmosis membrane water purification equipment in this embodiment, the temperature sensor 4 is a platinum resistance temperature sensor 4STT-BPA1B6C300D1E3N2G1PBT2S0; the present invention adopts a reverse osmosis membrane process, when When the temperature changes, the shape of the RO membrane changes, the viscosity of the water body changes, and the surface tension changes. These factors will indirectly affect the membrane flux. With 25 degrees Celsius as the suitable working temperature, every time the temperature drops by 1 degrees Celsius, the water production will drop by 3%. Real-time monitoring of water temperature provides a better understanding of how the entire system is functioning.

specific Embodiment approach 3

[0033] The difference from Embodiment 1 is that in the control system of reverse osmosis membrane water purification equipment in this embodiment, the pressure sensor 5 is a KAP50 capacitive pressure transmitter. It is used to monitor the inlet and outlet water pressure and liquid level, and shut down the equipment when the inlet water pressure is too low to prevent the booster pump from being burned out. When the water in the water storage tank is nearly full, the device is put into standby mode to prevent the water storage tank from overflowing.

technical field

[0001] The invention relates to a control system and a control method of reverse osmosis membrane water purification equipment. Background technique

[0002] Water is not only a necessity in human life and production, but also has a very important impact on the development of society and economy. Among them, the cleanliness of water is particularly important for the use of water. To ensure people's normal life and work, it is necessary to ensure the stable operation of the water supply system. After long-term development and improvement, tap water production technology has been very mature at home and abroad, and there are many methods for tap water treatment. However, judging from the actual development at present, it is still based on the traditional water treatment technology to carry out coagulation, sedimentation, filtration and disinfection of water and other treatment operations. Automatic monitoring and processing cannot be performed. Contents of ...

Examples

specific Embodiment approach 1

[0027] A control system of reverse osmosis membrane water purification equipment in this embodiment, such as figure 1 As shown, its composition includes an upper computer 1, a mobile phone 2, a lower computer 3, and a data acquisition module. Among them, the upper computer 1 is the computer on site of the water purification equipment, and the staff can realize user registration, user login, and threshold setting through the upper computer 1. , Check the work status and other operations. On the one hand, the various environmental parameters of the water purification equipment and the rainfall of the water source are collected and transmitted to the host computer 1; The upper computer 1 communicates with the lower computer 3 through the bus; according to the requirements of different sites, the lower computer 3 reserves two RS232 and two RS485 bus communication interfaces, and the staff can choose the appropriate interface for communication according to the actual situation. In...

specific Embodiment approach 2

[0031] The difference from Embodiment 1 is that in the control system of a reverse osmosis membrane water purification equipment in this embodiment, the temperature sensor 4 is a platinum resistance temperature sensor 4STT-BPA1B6C300D1E3N2G1PBT2S0; the present invention adopts a reverse osmosis membrane process, when When the temperature changes, the shape of the RO membrane changes, the viscosity of the water body changes, and the surface tension changes. These factors will indirectly affect the membrane flux. With 25 degrees Celsius as the suitable working temperature, every time the temperature drops by 1 degrees Celsius, the water production will drop by 3%. Real-time monitoring of water temperature provides a better understanding of how the entire system is functioning.

specific Embodiment approach 3

[0033] The difference from Embodiment 1 is that in the control system of reverse osmosis membrane water purification equipment in this embodiment, the pressure sensor 5 is a KAP50 capacitive pressure transmitter. It is used to monitor the inlet and outlet water pressure and liquid level, and shut down the equipment when the inlet water pressure is too low to prevent the booster pump from being burned out. When the water in the water storage tank is nearly full, the device is put into standby mode to prevent the water storage tank from overflowing.

Images