CN112483371A - Controller for water pump - Google Patents
Controller for water pump Download PDFInfo
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- CN112483371A CN112483371A CN202011348979.3A CN202011348979A CN112483371A CN 112483371 A CN112483371 A CN 112483371A CN 202011348979 A CN202011348979 A CN 202011348979A CN 112483371 A CN112483371 A CN 112483371A
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- power supply
- voltage
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- water pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/007—Installations or systems with two or more pumps or pump cylinders, wherein the flow-path through the stages can be changed, e.g. from series to parallel
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Business, Economics & Management (AREA)
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- Power Engineering (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a controller for a water pump, which relates to the technical field of water pump controllers and comprises a centerless computing module, a local control module and a power supply system; the centerless calculation module comprises a calculation unit and a communication interface unit, and the calculation unit performs information interaction with the calculation units of other controllers to acquire the running state information of the current water pump; the power supply system comprises a high-voltage battery, a low-voltage battery, a switching tube driving power supply, a power supply management unit, a high-voltage power supply, a low-voltage power supply and a switching unit. According to the invention, the water pump becomes a mature integrated intelligent device by bringing the relevant information of the accessory equipment serving the water pump into the control category of the water pump; meanwhile, two independent power supplies of the low-voltage battery and the high-voltage battery are respectively connected with the controller, the two groups of power supply circuits are mutually independent, when one group of power supply circuits fails, the other group of power supply circuits can be switched seamlessly, and a power supply required by work is continuously provided for the controller, so that the continuity and the safety of power supply are guaranteed.
Description
Technical Field
The invention relates to the technical field of water pump controllers, in particular to a controller for a water pump.
Background
Water pumps are machines that deliver or pressurize a liquid. It transfers the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, mainly used to transfer liquid including water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal, etc., and also to transfer liquid, gas mixture and liquid containing suspended solid matter. The technical parameters of the water pump performance include flow, suction lift, shaft power, water power, efficiency and the like; the pump can be divided into a volume water pump, a vane pump and the like according to different working principles. The water pump controller is used for controlling the water pump to work.
In the group control problem of the water pumps, the existing solutions are generally two, the first is that an equipment operator determines which water pumps and the working frequency of the water pumps are started according to the running condition of the refrigerator and the empirical estimation of the water quantity demand at the tail end, the empirical estimation is often inaccurate, reasonable combined running of the water pumps cannot be performed in time according to the demand at the tail end, and the total energy consumption of a water pump system is often higher than the theoretical optimal solution. In addition, a common method is to collect all information of the water pumps and their affiliated facilities to a central control station, which calculates an optimal solution according to global information to control the corresponding water pumps, and it is necessary to write operation parameters and performance curves of all the water pumps into a central control system, and the performance curves of the water pumps are information that equipment manufacturers of the water pumps do not want to disclose, so that the operability and expansibility of the control method are poor, and the centralized control method also brings a lot of field debugging work, so the expansibility and robustness are poor. In addition, the power supply system of the existing water pump controller is supplied with power by the only power supply system, but when the power supply system is powered off or fails, the controller cannot continue to work.
Disclosure of Invention
In order to solve the problems in the prior art, the invention leads the water pump to become mature integrated intelligent equipment by bringing the relevant information of the auxiliary equipment serving the water pump into the control scope of the water pump, reduces the installation and configuration work in the implementation process of a water supply system and greatly reduces the time and labor cost for engineering implementation; meanwhile, two independent power supplies of the low-voltage battery and the high-voltage battery are respectively connected with the controller, the two groups of power supply circuits are mutually independent, any one group of power supply circuit has a problem, the other group of power supply circuit can be switched seamlessly, and a power supply required by work is continuously provided for the controller, so that the continuity and the safety of the power supply of the controller are ensured.
In order to achieve the above effects, the invention specifically adopts the following technical scheme:
a controller for a water pump comprises a centerless calculation module, a local control module and a power supply system for supplying power to the controller;
the centerless calculation module comprises a calculation unit and a communication interface unit, and the calculation unit performs information interaction with the calculation units of other controllers to acquire the running state information of the current water pump;
the local control module is communicated with the centerless calculation module to control the current water pump according to the running state information and send the collected information of a plurality of parameters of the current water pump and the accessory facilities thereof in running to the centerless calculation module;
the power supply system comprises a high-voltage battery, a low-voltage battery, a switching tube driving power supply and a power supply management unit, and further comprises a high-voltage power supply, a low-voltage power supply and a switching unit, wherein the high-voltage power supply is connected to the high-voltage battery and converts the output voltage of the high-voltage battery into a first voltage for output; the low-voltage power supply is connected to the low-voltage battery and converts the output voltage of the low-voltage battery into a second voltage output; the switching unit comprises a first input end connected to the output end of the high-voltage power supply, a second input end connected to the output end of the low-voltage power supply, a third input end connected to the output end of the low-voltage battery, a first output end connected to the input end of the power management unit and a second output end connected to the input end of the switch tube driving power supply, the power supply of the power management unit is determined according to the voltage of the first input end and the voltage of the third input end, and the power supply of the switch tube driving power supply is determined according to the voltage of the first input end and the voltage of the second input end.
The computing unit is provided with a B-type interface which is communicated with a centerless computing module of a controller of other water pumps, and the computing unit is connected with the computing unit of the controller of other water pumps through the B-type interface.
The communication interface unit is provided with an A-type interface used for communicating with the local control module, and the running state information is sent to the local control module through the A-type interface.
The further scheme is that the local control module comprises a standard information storage module, an I/O interface of the local control module and an interface for communicating with the centerless computing module;
the standard information storage module stores various parameters or operation information related to the current water pump according to a standard format;
the I/O interface of the local control module is communicated with various sensors or actuators of the current water pump and the accessory facilities thereof so as to collect various information parameters generated in the operation process of the current water pump and the accessory facilities thereof and send instruction information for controlling the operation state of the current water pump;
the interface used for communicating with the centerless computing module sends information stored in the standard information storage module and various information parameters generated in the operation process of the current water pump and the accessory facilities thereof received by the I/O interface to the centerless computing module.
The power supply of the power supply management unit is one of a high-voltage power supply, a low-voltage power supply and a low-voltage battery;
the power supply of the switching tube driving power supply is one of a high-voltage power supply, a low-voltage power supply and a low-voltage battery.
Further, the output voltage of the low-voltage battery is greater than the first voltage, and the second voltage is greater than the first voltage;
the power supply for determining the power management unit according to the voltages of the first input end and the third input end and the power supply for determining the switching tube driving power supply according to the voltages of the first input end and the second input end comprises:
when the low-voltage battery is in a first state, determining that a power supply of the power supply management unit is the low-voltage battery, and determining that a power supply of the switching tube driving power supply is the low-voltage power supply;
and when the low-voltage battery is in a second state, determining that a power supply of the power supply management unit is the high-voltage power supply, and determining that a power supply of the switching tube driving power supply is the high-voltage power supply.
Further, the output voltage of the low-voltage battery is smaller than the first voltage, and the first voltage is smaller than the second voltage;
the power supply for determining the power management unit according to the voltages of the first input end and the third input end and the power supply for determining the switching tube driving power supply according to the voltages of the first input end and the second input end comprises:
when the low-voltage battery is in a first state, determining that a power supply of the power supply management unit is the high-voltage power supply, and determining that a power supply of the switching tube driving power supply is the low-voltage power supply;
and when the low-voltage battery is in a second state, determining that a power supply of the power supply management unit is the high-voltage power supply, and determining that a power supply of the switching tube driving power supply is the high-voltage power supply.
Further, the output voltage of the low-voltage battery is smaller than the first voltage, and the second voltage is smaller than the first voltage;
the power supply for determining the power management unit according to the voltages of the first input end and the third input end and the power supply for determining the switching tube driving power supply according to the voltages of the first input end and the second input end comprises:
when the high-voltage battery is in a first state, determining that a power supply of the power supply management unit is the high-voltage power supply, and determining that a power supply of the switching tube driving power supply is the high-voltage power supply;
and when the high-voltage battery is in a second state, determining that a power supply of the power supply management unit is the low-voltage battery, and determining that a power supply of the switching tube driving power supply is the low-voltage power supply.
Further, the first state is a normal state, and the second state is an abnormal state.
The invention has the beneficial effects that:
relevant information of accessory equipment serving for the water pump is brought into the control category of the water pump, so that the water pump becomes mature integrated intelligent equipment, installation and configuration work in the implementation process of a water supply system is reduced, and time and labor cost for engineering implementation are greatly reduced;
the water pump controller is internally provided with a standard information set of the water pump, so that the intelligent water pump can be plugged and used, and the modeling and configuration processes are avoided;
the controller has simple structure, is universal and strong, and can easily realize the intelligent upgrade of the water pump;
through two independent power supplies of low voltage battery and high voltage battery are connected with the controller respectively, and two sets of supply circuit mutual independence, arbitrary a set of supply circuit goes wrong, and another group supply circuit can seamless switching, continues to provide the required power of work for the controller to guarantee the continuation and the security of the power supply of controller.
Drawings
Fig. 1 is a schematic structural diagram of a controller for a water pump according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an adapter unit in a controller for a water pump according to an embodiment of the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1, an embodiment of the present invention discloses a controller for a water pump, which may be built in the water pump or used as an independent external device, wherein one water pump corresponds to one controller,
the system comprises a centerless computing module, a local control module and a power supply system for supplying power to a controller;
the centerless calculation module comprises a calculation unit and a communication interface unit, and the calculation unit performs information interaction with the calculation units of other controllers to acquire the running state information of the current water pump;
the local control module is communicated with the centerless calculation module to control the current water pump according to the running state information and send the collected information of a plurality of parameters of the current water pump and the accessory facilities during running to the centerless calculation module;
the centerless computing module is used for being interconnected with centerless computing modules of other controllers to form a centerless network, an optimized water pump group control strategy is obtained through computing, and the local control module is used for collecting relevant information of the water pump, providing the relevant information to the centerless computing module, acquiring the optimized strategy and actually controlling the water pump.
The power supply system comprises a high-voltage battery, a low-voltage battery, a switching tube driving power supply and a power supply management unit, and further comprises a high-voltage power supply, a low-voltage power supply and a switching unit, wherein the high-voltage power supply is connected to the high-voltage battery and converts the output voltage of the high-voltage battery into a first voltage to be output; the low-voltage power supply is connected to the low-voltage battery and converts the output voltage of the low-voltage battery into a second voltage to be output; the switching unit comprises a first input end connected to the output end of the high-voltage power supply, a second input end connected to the output end of the low-voltage power supply, a third input end connected to the output end of the low-voltage battery, a first output end connected to the input end of the power management unit and a second output end connected to the input end of the switching tube driving power supply, the power supply of the power management unit is determined according to the voltage of the first input end and the voltage of the third input end, and the power supply of the switching tube driving power supply is determined according to the voltage of the first input end and the voltage of the second input end; the power supply of the power supply management unit is one of a high-voltage power supply, a low-voltage power supply and a low-voltage battery; the power supply of the switching tube driving power supply is one of a high-voltage power supply, a low-voltage power supply and a low-voltage battery.
As shown in fig. 2, the switching unit may include a first unidirectional circuit and a second unidirectional circuit, and the first input terminal (connected to the output terminal of the high voltage power supply) is connected to the first output terminal (connected to the power management unit) via the first unidirectional circuit, and the third input terminal (connected to the output terminal of the low voltage battery) is connected to the first output terminal via the second unidirectional circuit. When the voltage of the first input end is lower than that of the third input end, the switching unit takes power from the third input end to provide input voltage for the power management unit; on the contrary, when the voltage of the first input end is higher than that of the third input end, the switching unit takes power from the first input end to provide input voltage for the power management unit. In particular, the first unidirectional circuit described above comprises a first diode D1 and the second unidirectional circuit comprises a second diode D2.
Likewise, the switching unit may include a third unidirectional circuit and a fourth unidirectional circuit, the first input terminal (connected to the output terminal of the high voltage power supply) being connected to the second output terminal (connected to the switching tube driving power supply) via the third unidirectional circuit; the second input terminal (the output terminal connected to the low-voltage power supply) is connected to the second output terminal via a fourth unidirectional circuit. Therefore, when the voltage of the first input end is lower than that of the second input end, the switching unit takes power from the second input end to provide input voltage for the switching tube driving power supply; on the contrary, when the voltage of the first input end is higher than that of the second input end, the switching unit takes power from the first input end to provide input voltage for the switching tube driving power supply. In particular, the third unidirectional circuit described above comprises a third diode D3 and the fourth unidirectional circuit comprises a fourth diode D4.
The high-voltage power supply for taking electricity from the high-voltage battery is additionally arranged to convert the high-voltage electricity output by the high-voltage battery into low-voltage electricity, so that the low-voltage battery and the high-voltage battery can simultaneously supply power for the controller, and the continuity and the safety of the power supply of the controller are ensured.
In this embodiment, the computing unit has a class B interface for communicating with the centerless computing module of the controller of the other water pump, and the computing unit is connected to the computing unit of the controller of the other water pump through the class B interface. The computing unit is interconnected with other computing units through the B-type interface, information interaction is carried out between the computing unit and the computing units of other controllers to complete non-central computing, and the running state of the current controlled water pump after optimization is obtained, including whether the current controlled water pump should be started or not, the specific working state and the like. It should be noted that the present invention does not relate to a specific calculation algorithm.
In this embodiment, the communication interface unit has a class a interface for communicating with the local control module, and the operation status information is sent to the local control module through the class a interface.
In this embodiment, the local control module includes a standard information storage module, an I/O interface of the local control module, and an interface for communicating with the centerless computing module;
the standard information storage module stores various parameters or operation information related to the current water pump according to a standard format;
the I/O interface of the local control module is communicated with various sensors or actuators of the current water pump and the accessory facilities thereof so as to collect various information parameters generated in the operation process of the current water pump and the accessory facilities thereof and send instruction information for controlling the operation state of the current water pump;
the interface used for communicating with the centerless computing module sends information stored in the standard information storage module and various information parameters generated in the operation process of the current water pump and the accessory facilities thereof received by the I/O interface to the centerless computing module.
The I/O interface of the local control module is communicated with various sensors and actuators of the water pump and the accessory facilities thereof so as to collect various information generated in the operation process of the water pump and the accessory facilities thereof or send various control instructions, and the sensors comprise an inlet pressure value, an outlet pressure value and water flow rate of the water pump, so that the controller not only can collect the information of the water pump, but also can collect the accessory information of the water pump, and simultaneously obtains the internal and external information, thereby realizing the intellectualization of the control of the water pump. The actuator comprises valves at the inlet and the outlet of a water pipeline, a controller inside the water pump, a frequency converter and the like. It will be appreciated that the figures are merely schematic and that various sensors or actuators may be provided as required depending on the actual requirements.
Besides the dynamic information obtained by the sensors, the water pump information storage module also has fixed information about the water pump, and all the information is stored in a standard data format in the standard information storage module. Specifically, the service information (manufacturer, year of production, warranty period, service telephone), performance parameters (rated lift, rated flow, rated power, rated efficiency, power-on protection duration, power-off protection duration), equipment model coefficients, operation states (manual automatic state, start-stop state, accumulated operation time, start times, water pump efficiency, water pump power, water pump flow, water pump frequency, water pump lift), setting values (manual automatic state setting, start-stop state setting, frequency setting value, lift setting value, upper limit of operation frequency, lower limit of operation frequency), alarm information (water pump alarm, communication state), and the like are included, and the service information may be factory setting values, or detection values of various sensors during operation, user setting values, calculated values, and the like.
The centerless calculation module identifies the water pump based on the standard data and can realize plug and play with other centerless calculation modules.
In the present embodiment, the output voltage of the low-voltage battery is greater than the first voltage, and the second voltage is greater than the first voltage;
confirm the power supply of power management unit according to the voltage size of first input and third input to and confirm the power supply of switch tube drive power supply according to the voltage size of first input and second input, include:
when the low-voltage battery is in a first state, determining that a power supply of the power supply management unit is the low-voltage battery, and determining that a power supply of the switching tube driving power supply is the low-voltage power supply;
and when the low-voltage battery is in the second state, determining that the power supply of the power supply management unit is a high-voltage power supply, and determining that the power supply of the switching tube driving power supply is the high-voltage power supply.
The first state is a normal state and the second state is an abnormal state.
The switching unit takes electricity from the low-voltage battery to supply power for the power management unit because the output voltage of the low-voltage battery is higher than the first voltage output by the high-voltage power supply; meanwhile, as the second voltage output by the low-voltage power supply is higher than the first voltage output by the high-voltage power supply, the switching unit takes power from the low-voltage power supply to supply power for the switching tube driving power supply.
When the low-voltage battery is abnormal (namely abnormal states, such as the low-voltage battery per se is abnormal, and a cable connected with the low-voltage battery is dropped or disconnected), the output voltage of the low-voltage battery is lower than the first voltage output by the high-voltage power supply; further, since the low-voltage battery cannot output a voltage to the low-voltage power supply, the second voltage output by the low-voltage power supply is also lower than the first voltage output by the high-voltage power supply. At this time, the switching unit gets power from the high-voltage power supply connected with the high-voltage battery to provide input voltage for the power management unit and the switch tube driving power supply. When the low-voltage power supply is abnormal, the output voltage of the low-voltage battery is higher than the first voltage output by the high-voltage power supply, the output second voltage of the low-voltage power supply is lower than the first voltage output by the high-voltage power supply due to the abnormality, the switching unit gets electricity from the high-voltage power supply connected to the high-voltage battery at the moment to provide the input voltage for the switching tube driving power supply, and meanwhile, the switching unit gets electricity from the low-voltage battery and continues to provide the input voltage for the power management unit. When the high-voltage battery or the high-voltage power supply is abnormal, the switching unit takes electricity from the low-voltage battery to provide input voltage for the power supply management unit, and takes electricity from the low-voltage power supply to provide input voltage for the switching tube driving power supply.
In the present embodiment, the output voltage of the low-voltage battery is less than the first voltage, which is less than the second voltage;
confirm the power supply of power management unit according to the voltage size of first input and third input to and confirm the power supply of switch tube drive power supply according to the voltage size of first input and second input, include:
when the low-voltage battery is in a first state, determining that a power supply of the power supply management unit is a high-voltage power supply, and determining that a power supply of the switching tube driving power supply is a low-voltage power supply;
and when the low-voltage battery is in the second state, determining that the power supply of the power supply management unit is a high-voltage power supply, and determining that the power supply of the switching tube driving power supply is the high-voltage power supply.
The first state is a normal state and the second state is an abnormal state.
Under the normal state, because the output voltage of the low-voltage battery is lower than the first voltage output by the high-voltage power supply, and the second voltage output by the low-voltage power supply is higher than the first voltage output by the high-voltage power supply, the switching unit takes electricity from the high-voltage power supply connected with the high-voltage battery to provide input voltage for the power management unit, and the switching unit takes electricity from the low-voltage power supply to provide input voltage for the switching tube driving power supply.
When the low-voltage battery is abnormal (the low-voltage battery is abnormal, and a cable connected with the low-voltage battery is dropped or disconnected), the output voltage of the low-voltage battery is lower than the first voltage output by the high-voltage power supply; and at this moment, the low-voltage battery can not provide input voltage for the low-voltage power supply, so that the second voltage output by the low-voltage power supply is lower than the first voltage output by the high-voltage power supply, and the switching unit gets power from the high-voltage power supply connected with the high-voltage battery to provide voltage input for the power management unit and the switching tube driving power supply. When the low-voltage power supply is abnormal, the output voltage of the low-voltage battery is lower than the first voltage output by the high-voltage power supply, the output second voltage of the low-voltage power supply is also lower than the first voltage output by the high-voltage power supply due to the abnormality of the low-voltage power supply, and at the moment, the switching unit gets electricity from the high-voltage power supply connected with the high-voltage battery and provides input voltage for the switching tube driving power supply and the power management unit. When the high-voltage power supply or the high-voltage battery is abnormal, the low-voltage battery and the low-voltage power supply respectively supply power for the power supply management unit and the switching tube driving power supply.
In the present embodiment, the output voltage of the low-voltage battery is less than the first voltage, and the second voltage is less than the first voltage;
confirm the power supply of power management unit according to the voltage size of first input and third input to and confirm the power supply of switch tube drive power supply according to the voltage size of first input and second input, include:
when the high-voltage battery is in a first state, determining that a power supply of the power supply management unit is a high-voltage power supply, and determining that a power supply of the switching tube driving power supply is the high-voltage power supply;
and when the high-voltage battery is in the second state, determining that the power supply of the power management unit is a low-voltage battery, and determining that the power supply of the switching tube driving power supply is a low-voltage power supply.
The first state is a normal state and the second state is an abnormal state.
Under normal circumstances, the switching unit gets electricity from the high-voltage power supply connected with the high-voltage battery, provides input voltage for the power management unit and the switch tube driving power supply, and when the high-voltage power supply or the high-voltage battery is abnormal (namely abnormal state), the low-voltage battery and the low-voltage power supply respectively supply power for the power management unit and the switch tube driving power supply.
Finally, only specific embodiments of the present invention have been described in detail above. The invention is not limited to the specific embodiments described above. Equivalent modifications and substitutions by those skilled in the art are also within the scope of the present invention. Accordingly, equivalent alterations and modifications are intended to be included within the scope of the invention, without departing from the spirit and scope of the invention.
Claims (9)
1. A controller for a water pump is characterized in that:
the system comprises a centerless computing module, a local control module and a power supply system for supplying power to the controller;
the centerless calculation module comprises a calculation unit and a communication interface unit, and the calculation unit performs information interaction with the calculation units of other controllers to acquire the running state information of the current water pump;
the local control module is communicated with the centerless calculation module to control the current water pump according to the running state information and send the collected information of a plurality of parameters of the current water pump and the accessory facilities thereof in running to the centerless calculation module;
the power supply system comprises a high-voltage battery, a low-voltage battery, a switching tube driving power supply and a power supply management unit, and further comprises a high-voltage power supply, a low-voltage power supply and a switching unit, wherein the high-voltage power supply is connected to the high-voltage battery and converts the output voltage of the high-voltage battery into a first voltage for output; the low-voltage power supply is connected to the low-voltage battery and converts the output voltage of the low-voltage battery into a second voltage output; the switching unit comprises a first input end connected to the output end of the high-voltage power supply, a second input end connected to the output end of the low-voltage power supply, a third input end connected to the output end of the low-voltage battery, a first output end connected to the input end of the power management unit and a second output end connected to the input end of the switch tube driving power supply, the power supply of the power management unit is determined according to the voltage of the first input end and the voltage of the third input end, and the power supply of the switch tube driving power supply is determined according to the voltage of the first input end and the voltage of the second input end.
2. The controller for a water pump according to claim 1, characterized in that:
the computing unit is provided with a B-type interface which is communicated with a centerless computing module of a controller of other water pumps, and the computing unit is connected with the computing unit of the controller of other water pumps through the B-type interface.
3. The controller for a water pump according to claim 1, characterized in that:
the communication interface unit is provided with an A-type interface used for communicating with the local control module, and the running state information is sent to the local control module through the A-type interface.
4. The controller for a water pump according to claim 1, characterized in that:
the local control module comprises a standard information storage module, an I/O interface of the local control module and an interface for communicating with the centerless computing module;
the standard information storage module stores various parameters or operation information related to the current water pump according to a standard format;
the I/O interface of the local control module is communicated with various sensors or actuators of the current water pump and the accessory facilities thereof so as to collect various information parameters generated in the operation process of the current water pump and the accessory facilities thereof and send instruction information for controlling the operation state of the current water pump;
the interface used for communicating with the centerless computing module sends information stored in the standard information storage module and various information parameters generated in the operation process of the current water pump and the accessory facilities thereof received by the I/O interface to the centerless computing module.
5. The controller for a water pump according to claim 1, characterized in that:
the power supply of the power supply management unit is one of a high-voltage power supply, a low-voltage power supply and a low-voltage battery;
the power supply of the switching tube driving power supply is one of a high-voltage power supply, a low-voltage power supply and a low-voltage battery.
6. The controller for a water pump according to claim 1, characterized in that:
the output voltage of the low-voltage battery is greater than the first voltage, and the second voltage is greater than the first voltage;
the power supply for determining the power management unit according to the voltages of the first input end and the third input end and the power supply for determining the switching tube driving power supply according to the voltages of the first input end and the second input end comprises:
when the low-voltage battery is in a first state, determining that a power supply of the power supply management unit is the low-voltage battery, and determining that a power supply of the switching tube driving power supply is the low-voltage power supply;
and when the low-voltage battery is in a second state, determining that a power supply of the power supply management unit is the high-voltage power supply, and determining that a power supply of the switching tube driving power supply is the high-voltage power supply.
7. The controller for a water pump according to claim 1, characterized in that:
the output voltage of the low-voltage battery is less than the first voltage, and the first voltage is less than the second voltage;
the power supply for determining the power management unit according to the voltages of the first input end and the third input end and the power supply for determining the switching tube driving power supply according to the voltages of the first input end and the second input end comprises:
when the low-voltage battery is in a first state, determining that a power supply of the power supply management unit is the high-voltage power supply, and determining that a power supply of the switching tube driving power supply is the low-voltage power supply;
and when the low-voltage battery is in a second state, determining that a power supply of the power supply management unit is the high-voltage power supply, and determining that a power supply of the switching tube driving power supply is the high-voltage power supply.
8. The controller for a water pump according to claim 1, characterized in that:
the output voltage of the low-voltage battery is smaller than the first voltage, and the second voltage is smaller than the first voltage;
the power supply for determining the power management unit according to the voltages of the first input end and the third input end and the power supply for determining the switching tube driving power supply according to the voltages of the first input end and the second input end comprises:
when the high-voltage battery is in a first state, determining that a power supply of the power supply management unit is the high-voltage power supply, and determining that a power supply of the switching tube driving power supply is the high-voltage power supply;
and when the high-voltage battery is in a second state, determining that a power supply of the power supply management unit is the low-voltage battery, and determining that a power supply of the switching tube driving power supply is the low-voltage power supply.
9. The controller for a water pump according to any one of claims 6 to 8, wherein:
the first state is a normal state, and the second state is an abnormal state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011348979.3A CN112483371A (en) | 2020-11-26 | 2020-11-26 | Controller for water pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011348979.3A CN112483371A (en) | 2020-11-26 | 2020-11-26 | Controller for water pump |
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| CN112483371A true CN112483371A (en) | 2021-03-12 |
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| CN202011348979.3A Pending CN112483371A (en) | 2020-11-26 | 2020-11-26 | Controller for water pump |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593839A (en) * | 2016-10-26 | 2017-04-26 | 清华大学 | Intelligent water pump controller and intelligent water pump |
| CN107521348A (en) * | 2017-07-31 | 2017-12-29 | 苏州汇川联合动力系统有限公司 | Electric machine controller powersupply system and electric machine controller |
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2020
- 2020-11-26 CN CN202011348979.3A patent/CN112483371A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593839A (en) * | 2016-10-26 | 2017-04-26 | 清华大学 | Intelligent water pump controller and intelligent water pump |
| CN107521348A (en) * | 2017-07-31 | 2017-12-29 | 苏州汇川联合动力系统有限公司 | Electric machine controller powersupply system and electric machine controller |
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