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Non-negative-pressure variable frequency intelligent water supply control system
The invention discloses a non-negative-pressure variable frequency intelligent water supply control system. The non-negative-pressure variable frequency intelligent water supply control system comprises a PLC and a power supply, wherein the PLC is connected with a protective circuit; the input end of the PLC is connected with a liquid level sensor and a pressure sensor; an amplification circuit, a filter circuit and an A/D conversion circuit which are sequentially connected are connected among the liquid level sensor, the pressure sensor and the PLC; the output end of the PLC is connected with a first relay used for controlling a first variable frequency pump, a second relay used for controlling a second variable frequency pump, a third relay used for controlling a first solenoid valve, a fourth relay used for controlling a second solenoid valve, and a negative pressure eliminator; the PLC is further connected with a PLC communication module used for being connected and communicated with an upper computer through an Ethernet interface. The non-negative-pressure variable frequency intelligent water supply control system is simple in structure, reasonable in design, convenient to implement, low in cost, easy and convenient to adjust, high in degree of automation and capable of achieving remote control through the upper computer.
Non-negative-pressure variable frequency intelligent water supply control system
The invention discloses a non-negative-pressure variable frequency intelligent water supply control system. The non-negative-pressure variable frequency intelligent water supply control system comprises a PLC and a power supply, wherein the PLC is connected with a protective circuit; the input end of the PLC is connected with a liquid level sensor and a pressure sensor; an amplification circuit, a filter circuit and an A/D conversion circuit which are sequentially connected are connected among the liquid level sensor, the pressure sensor and the PLC; the output end of the PLC is connected with a first relay used for controlling a first variable frequency pump, a second relay used for controlling a second variable frequency pump, a third relay used for controlling a first solenoid valve, a fourth relay used for controlling a second solenoid valve, and a negative pressure eliminator; the PLC is further connected with a PLC communication module used for being connected and communicated with an upper computer through an Ethernet interface. The non-negative-pressure variable frequency intelligent water supply control system is simple in structure, reasonable in design, convenient to implement, low in cost, easy and convenient to adjust, high in degree of automation and capable of achieving remote control through the upper computer.
Non-negative-pressure variable frequency intelligent water supply control system
TIAN WEIGUO (author)
2015-05-20
Patent
Electronic Resource
English
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