CN115419578A - Multi-water-pump communication system - Google Patents
Multi-water-pump communication system Download PDFInfo
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- CN115419578A CN115419578A CN202211045983.1A CN202211045983A CN115419578A CN 115419578 A CN115419578 A CN 115419578A CN 202211045983 A CN202211045983 A CN 202211045983A CN 115419578 A CN115419578 A CN 115419578A
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- 238000004891 communication Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 827
- 230000004044 response Effects 0.000 claims description 114
- 238000012790 confirmation Methods 0.000 claims description 19
- 230000003993 interaction Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 description 19
- 230000008569 process Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 12
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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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
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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
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
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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
- F04B49/02—Stopping, starting, unloading or idling control
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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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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a multi-water-pump communication system which is used for solving the problems of high resource requirement and complex arrangement when multi-water-pump communication is connected in the prior art. Many water pump control system includes a plurality of water pumps and the water pump controller who corresponds with every water pump, water pump controller can receive the solicited signal that last one-level water pump controller sent, and send answer signal to last one-level water pump controller, with the communication of last one-level water pump controller, and/or can send solicited signal to next one-level water pump controller, and receive the answer signal that next one-level water pump controller sent, with the communication of next one-level water pump controller, because communicate through solicited signal and answer signal between the water pump controller, thereby can reduce the requirement to the resource, the setting is simple, and then can improve system performance.
Description
Technical Field
The invention relates to the technical field of water pump control, in particular to a multi-water-pump communication system.
Background
At present, many hotels and users all adopt water pump pressure boost to supply water, and in the water consumption peak period, the performance of single water pump probably is not enough to satisfy the water demand of off-peak period, leads to water supply pressure to reduce, then needs increase water pump quantity this moment to improve out the water flow.
If the multi-water pump is used for supplying water, the multi-water pump needs to be connected on line, the power of the water pump is increased, and meanwhile, the water pump is prevented from being in failure. Water pumps need to be communicated with each other to operate coordinately when online, and the communication of multiple water pumps usually adopts 485 buses or CAN buses, which have high requirements on the resources of Micro Control Units (MCU), high peripheral cost, and complex operations such as host machine setting, slave machine setting and the like when online.
Disclosure of Invention
The invention provides a multi-water-pump communication system which is used for solving the problems of high resource requirement and complex arrangement when multi-water-pump communication is connected in the prior art.
The embodiment of the invention provides a multi-water-pump communication system, which comprises a plurality of water pumps and water pump controllers corresponding to the water pumps:
the water pump controller is used for sending a response signal to the upper-stage water pump controller after receiving a request signal sent by the upper-stage water pump controller so as to enable the water pump controller to be communicated with the upper-stage water pump controller, and/or receiving the response signal sent by the lower-stage water pump controller after sending the request signal to the lower-stage water pump controller so as to enable the water pump controller to be communicated with the lower-stage water pump controller;
the water pump controller comprises an uploading module and an issuing module, and the uploading module of the water pump controller of the current stage is communicated with the issuing module of the corresponding water pump controller of the previous stage;
the upper sending module comprises an upper sending and receiving input and output interface and an upper sending and receiving input and output interface, and the lower sending module comprises a lower sending and receiving input and output interface and a lower sending and input and output interface;
the upper sending input and output interface of the water pump controller of the current stage is connected with the lower sending input and output interface of the water pump controller of the previous stage, and the upper sending input and output interface of the water pump controller of the current stage is connected with the lower sending input and output interface of the water pump controller of the previous stage.
In one possible implementation, the water pump controller comprises a head water pump controller and a tail water pump controller, or a head water pump controller, a middle water pump controller and a tail water pump controller.
In a possible implementation manner, the request signal is an online request signal, and the response signal is an online response signal;
the water pump controller determines itself to be the head water pump controller by:
and within a preset time length, sending the online request signal, receiving the online response signal and not receiving the online request signal.
In a possible implementation manner, the request signal is an online request signal, and the response signal is an online response signal;
the water pump controller determines itself to be the intermediate water pump controller by:
and within a preset time length, sending the online request signal, receiving the online response signal and receiving the online request signal.
In a possible implementation manner, the request signal is an online request signal, and the response signal is an online response signal;
the water pump controller determines itself to be the tailwater pump controller by:
and within a preset time length, sending the online request signal, not receiving the online response signal and receiving the online request signal.
In one possible implementation, the head water pump controller is further configured to:
and controlling the head water pump corresponding to the head water pump to operate at a constant pressure, and controlling the head water pump to enter a rated rotating speed or rated power operation mode when the rotating speed of the head water pump reaches a rated rotating speed or the power reaches a rated power.
In a possible implementation manner, the request signal is an operation request signal, and the response signal is an operation response signal:
and the head water pump controller or the middle water pump controller is used for sending the operation request signal to a next-stage water pump controller and receiving the operation response signal sent by the next-stage water pump controller after the operation condition is determined to be met, so that the next-stage water pump controller controls the water pump corresponding to the next-stage water pump controller to operate.
In a possible implementation mode, the device further comprises a pressure sensor arranged at the water outlet of the water pump; the operating conditions include:
and the pressure value obtained by the head water pump controller or the middle water pump controller through the corresponding pressure sensor is smaller than a preset pressure value.
In one possible implementation, the next-stage water pump controller is configured to:
and after receiving the operation request signal sent by the head water pump controller or the middle water pump controller, sending the operation response signal to the head water pump controller or the middle water pump controller, and controlling the operation of the water pump corresponding to the operation response signal.
In a possible implementation manner, the next-stage water pump controller is specifically configured to:
if the next-stage water pump controller is the middle water pump controller, controlling the corresponding water pump to operate at a constant pressure, and when the rotating speed of the water pump reaches the rated rotating speed or the power reaches the rated power, controlling the corresponding water pump to enter a rated rotating speed or rated power operation mode;
and if the next-stage water pump controller is a tail water pump controller, controlling the corresponding water pump to operate at a constant pressure.
In one possible implementation manner, the request signal is a shutdown request signal, and the response signal is a shutdown response signal:
the tail water pump controller or the middle water pump controller is used for sending a stop operation signal to the corresponding upper-stage water pump controller after the stop condition is met, and controlling the corresponding water pump to stop operating after receiving a stop response signal sent by the upper-stage water pump controller; and after the tail water pump controller or the intermediate water pump controller controls the corresponding water pump to stop operating, a stop confirmation signal is sent to the corresponding upper-stage water pump controller.
In a possible implementation mode, the device further comprises a pressure sensor arranged at the water outlet of the water pump; the shutdown conditions include:
no water supply requirement exists; or
And the tail water pump controller or the middle water pump controller determines that the pressure value acquired by the corresponding pressure sensor is greater than a preset pressure value.
In one possible implementation, the determination of whether there is a need for water supply is made by:
when the tail water pump controller or the middle water pump controller determines that the pressure value acquired through the pressure sensor corresponding to the tail water pump controller is larger than a preset pressure value, after the rotating speed of the water pump corresponding to the middle water pump controller is controlled to be reduced, if the pressure value is reduced, it is determined that a water supply demand exists, and if not, it is determined that no water supply demand exists.
In one possible implementation manner, the upper-stage water pump controller is configured to:
after the shutdown operation signal sent by the tail water pump controller or the middle water pump controller is received, sending a shutdown response signal to the tail water pump controller or the middle water pump controller; and after receiving the shutdown confirmation signal sent by the tail water pump controller or the middle water pump controller, sending the confirmation response signal to the tail water pump controller or the middle water pump controller, and controlling the water pump corresponding to the upper-stage water pump controller to be changed from a rated rotating speed or a rated power operation mode to a constant-pressure operation mode.
In one possible implementation, the request signal and/or the response signal are square wave signals with preset pulse widths.
In a possible implementation manner, if the request signal or the response signal is normally high or normally low, it is determined that the water pump controller sending the request signal or the response signal and the water pump corresponding to the water pump controller are in a fault state.
In one possible implementation, the water pump controller comprises a human-computer interaction module;
and the human-computer interaction module is used for responding to the setting operation of the user and setting the corresponding preset pressure value.
The invention has the following beneficial effects:
according to the multi-water-pump communication system provided by the embodiment of the invention, the water pump controller can receive the request signal sent by the upper-stage water pump controller and send the response signal to the upper-stage water pump controller so as to communicate with the upper-stage water pump controller, and/or can send the request signal to the lower-stage water pump controller and receive the response signal sent by the lower-stage water pump controller so as to communicate with the lower-stage water pump controller.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a multiple water pump communication system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another multi-pump communication system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a dual-water-pump communication system according to an embodiment of the present invention;
FIG. 4a is a schematic diagram of a signal provided by an embodiment of the present invention;
FIG. 4b is a schematic diagram of another signal provided by an embodiment of the present invention;
FIG. 4c is a schematic diagram of another signal provided by an embodiment of the present invention;
fig. 5 is a schematic diagram of a dual-water-pump working process of a dual-water-pump communication system according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a working flow of a multiple water pump in a multiple water pump communication system according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating a start-up process of a multiple water pump according to an embodiment of the present invention;
fig. 8 is a schematic flow chart of a multi-water pump shutdown according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problems of high requirement on resources and complex setting when the multi-water-pump communication is online, an embodiment of the invention provides a multi-water-pump communication system, as shown in fig. 1, the system comprises a plurality of water pumps 101 and water pump controllers 102 corresponding to each water pump 101;
the water pump controller 102 is configured to send a response signal to the upper-stage water pump controller 102 after receiving the request signal sent by the upper-stage water pump controller 102, so that the water pump controller 102 communicates with the upper-stage water pump controller 102, and/or receive a response signal sent by the lower-stage water pump controller 102 after sending the request signal to the lower-stage water pump controller, so that the water pump controller 102 communicates with the lower-stage water pump controller 102;
the water pump controller 102 may include an up-sending module and an down-sending module, where the up-sending module of the present-stage water pump controller communicates with the down-sending module of the next-stage water pump controller, specifically, the up-sending module may include an up-sending receiving input/output interface and an up-sending input/output interface, and the down-sending module may include an down-sending receiving input/output interface and an down-sending transmitting input/output interface.
The upper sending input and output interface of the water pump controller of the current stage is communicated with the lower sending input and output interface of the water pump controller of the previous stage, and the upper sending input and output interface of the water pump controller of the current stage is communicated with the lower sending input and output interface of the water pump controller of the previous stage.
In the embodiment of the invention, the water pump controller can receive the request signal sent by the upper-stage water pump controller and send the response signal to the upper-stage water pump controller so as to communicate with the upper-stage water pump controller, and/or can send the request signal to the lower-stage water pump controller and receive the response signal sent by the lower-stage water pump controller so as to communicate with the lower-stage water pump controller.
In specific implementation, the water pump controller can be divided into a head water pump controller, a middle water pump controller and a tail water pump controller, for example, as shown in fig. 1, the water pump controller 1 is the head water pump controller, the water pump controllers 2 to 2 (n-1) are the middle water pump controllers, and the water pump controller n is the tail water pump controller.
The head water pump controller is used for sending a request signal to the next-stage water pump controller corresponding to the head water pump controller, and the next-stage water pump controller sends a response signal to the head water pump controller after receiving the request signal sent by the head water pump controller.
For example, as shown in fig. 1, all the water pump controllers are powered on, the water pump controller 1 sends a request signal to the water pump controller 2, and the water pump controller 2 sends a response signal to the water pump controller 1 after receiving the request signal.
Since the water pump controller 1 is a head water pump controller, there is no upper stage water pump controller, and thus the request signal cannot be received.
The intermediate water pump controller is used for sending a request signal to the next-stage water pump controller corresponding to the intermediate water pump controller, the next-stage water pump controller returns a response signal after receiving the request signal, and the intermediate water pump controller is used for receiving the request signal sent by the previous-stage water pump controller corresponding to the intermediate water pump controller and returning the response signal.
For example, as shown in fig. 1, the water pump controller 2 sends a request signal to the water pump controller 3, the water pump controller 3 sends a response signal to the water pump controller 2 after receiving the request signal, and the water pump controller 2 sends a response signal to the water pump controller 1 after receiving the request signal sent by the water pump controller 1.
And the tail water pump controller is used for receiving the request signal sent by the corresponding upper-stage water pump controller and then sending a response signal to the upper-stage water pump controller.
For example, as shown in FIG. 1, the water pump controller n receives a request signal from the water pump controller (n-1), and then transmits a response signal to the water pump controller (n-1).
In one embodiment, the request signal may be an online request signal, an operation request signal, or a shutdown request signal, and the response signal may be an online response signal corresponding to the online request signal, an operation response signal corresponding to the operation request signal, or a shutdown response signal corresponding to the shutdown request signal.
The on-line request signal and the on-line response signal are signals sent by the water pump controller in an on-line process, the operation request signal and the operation response signal are signals sent by the water pump controller in a process of controlling the water pump to operate, and the stop request signal and the stop response signal are signals sent by the water pump controller in a process of controlling the water pump to stop operating.
The following describes the on-line process, the process of controlling the next-stage water pump to operate, and the process of controlling the previous-stage water pump to stop operating in detail, respectively.
The water pump controller online process:
after the water pump controller is electrified, within a preset time, the water pump controller at the current stage sends an online request signal to the water pump controller at the next stage, and if an online response signal returned by the water pump controller at the next stage is received, the water pump controller at the current stage and the water pump controller at the next stage are successfully online.
It should be noted that, after the water pump controller is powered on, an online request signal may be sent to the next-stage water pump controller, and then it is determined whether an online response signal is received within a preset time period, and if so, the water pump controller and the next-stage water pump controller are successfully online.
In the embodiment of the invention, the sending input/output interface of the sending module of the water pump controller sends the online request signal at regular time to detect whether the next-stage water pump exists, and if the sending receiving input/output interface of the sending module of the water pump controller receives the online response signal, the next-stage water pump is determined to exist and the water pump enters the online mode.
The method comprises the steps that an uplink receiving input/output interface of an uplink module of the water pump controller regularly monitors whether an online request signal is received or not, if the online request signal is received, the water pump at the upper stage is determined to exist, the uplink sending input/output interface of the uplink module of the water pump controller sends an online response signal to an downlink receiving input/output interface of a downlink module of the water pump controller at the upper stage, and the water pump controller enters an online mode.
In specific implementation, it may be determined whether the water pump controller is a head water pump controller, an intermediate water pump controller, or a tail water pump controller in an online process, and a specific implementation manner may be as follows:
within a preset time, after the water pump controller sends an online request signal, the water pump controller receives an online response signal and does not receive the online request signal, and then the water pump controller is determined to be a head water pump controller;
within a preset time, after the water pump controller sends an online request signal, a connection response signal is received, and a connection request signal is received, the water pump controller is determined to be a middle water pump controller;
and within the preset time, after the water pump controller sends the on-line request signal, the on-line response signal is not received, but the on-line request signal is received, and the water pump controller is determined to be a tail water pump controller.
In the embodiment, the on-line between the water pump controllers is realized by sending the on-line request signal and receiving the on-line response signal without using a bus, so that the resource requirement can be reduced, the design is simplified, and the system performance is improved.
After the water pump controllers are connected with each other, if water needs to be supplied, the head water pump controller controls the head water pump corresponding to the head water pump to operate at a constant pressure, and when the rotating speed of the head water pump reaches a rated rotating speed or the power of the head water pump reaches a rated power, the head water pump controller controls the head water pump to enter a rated power or rated rotating speed operation mode.
The water pump controller controls the operation process of the next level of water pump:
and after the next-stage water pump controller receives the operation request signal sent by the head water pump controller or the middle water pump controller, sending an operation response signal to the head water pump controller or the middle water pump controller, and controlling the water pump corresponding to the next-stage water pump controller to operate.
The operational condition is satisfied when the head water pump controller or the intermediate water pump controller determines that the water supply is insufficient, that is, when the water pressure at the water outlet of the water pump corresponding to the head water pump controller or the intermediate water pump controller is less than or equal to a preset pressure value.
In the concrete implementation, can set up pressure sensor at the delivery port of every water pump, pressure sensor can monitor the hydraulic pressure value of delivery port, water pump controller acquires the pressure value from this pressure sensor, when this pressure value less than or equal to predetermines the pressure value, then need start the operation of next stage water pump, consequently, water pump controller sends the operation request signal to next stage water pump controller, next stage water pump controller receives behind the operation request signal, return the operation answer signal to control the water pump operation.
In the above embodiment, if the next-stage water pump controller is the intermediate water pump controller, the water pump corresponding to the next-stage water pump controller is controlled to operate at a constant pressure, and when the rotating speed of the water pump reaches the rated rotating speed or the power reaches the rated power, the water pump is controlled to enter the rated power or rated rotating speed operation mode;
and if the next-stage water pump controller is a tail water pump controller, controlling the corresponding water pump to operate at a constant pressure.
Controlling the upper-stage water pump to stop operating:
the tail water pump controller or the middle water pump controller is used for sending a stop operation signal to the corresponding upper-stage water pump controller after the stop condition is met, controlling the corresponding water pump to stop operation after the stop response signal sent by the upper-stage water pump controller is received, and sending a stop confirmation signal to the corresponding upper-stage water pump controller after the tail water pump controller or the middle water pump controller controls the corresponding water pump to stop operation.
The shutdown condition may be that there is no water supply demand or there is a water supply demand, but the tail water pump controller or the middle water pump controller determines that the pressure value obtained by the pressure sensor corresponding to the tail water pump controller or the middle water pump controller is greater than a preset pressure value.
In a specific implementation, whether there is a water supply demand is judged by the following way:
when the tail water pump controller or the middle water pump controller determines that the pressure value acquired through the pressure sensor corresponding to the tail water pump controller or the middle water pump controller is larger than the preset pressure value, after the rotating speed of the water pump corresponding to the tail water pump controller is controlled to be reduced, if the pressure value is reduced, the water supply requirement is determined, and otherwise, the water supply requirement is determined to be absent.
And after receiving the stop operation signal, the upper-stage water pump controller sends a stop response signal to the tail water pump controller or the middle water pump controller.
In the implementation, because the head water pump controller does not have a previous water pump controller, when the head water pump controller needs to be stopped, namely after a command of no water supply requirement is received, the head water pump is directly controlled to stop running.
In an embodiment, the water pump controller may further include a human-computer interaction module, where the human-computer interaction module is configured to respond to a setting operation of a user and set a preset pressure value corresponding to the setting operation.
For ease of understanding, the present invention is described below in terms of specific examples.
As shown in fig. 2, the multi-water-pump communication system provided in the embodiment of the present invention includes 3 water pumps, a head water pump, a middle water pump, a tail water pump, and 3 water pump controllers, where the water pump controller 1 corresponds to the head water pump, the water pump controller 2 corresponds to the middle water pump, and the water pump controller 3 corresponds to the tail water pump.
Each water pump controller comprises an uploading module and an issuing module, the issuing module of the upper-stage water pump controller is in communication connection with the uploading module of the current-stage water pump controller, and the issuing module of the current-stage water pump controller is in communication connection with the uploading module of the lower-stage water pump controller.
Referring to fig. 2, the water pump controller 1 is an upper stage water pump controller of the water pump controller 2, the water pump controller 2 is a lower stage water pump controller of the water pump controller 1, the water pump controller 2 is an upper stage water pump controller of the water pump controller 3, and the water pump controller 3 is a lower stage water pump controller of the water pump controller 2.
The water pump controllers are connected together through the input and output interfaces. The receiving input/output interface of the sending module of the water pump controller of the current stage is connected with the sending input/output interface of the sending module of the water pump controller of the next stage, the sending input/output interface of the sending module of the water pump controller of the current stage is connected with the receiving input/output interface of the sending module of the water pump controller of the next stage, the sending input/output interface of the sending module of the water pump controller of the current stage is connected with the receiving input/output interface of the sending module of the water pump controller of the previous stage, and the receiving input/output interface of the sending module of the water pump controller of the current stage is connected with the sending input/output interface of the sending module of the water pump controller of the previous stage.
Referring to fig. 2, the sending module of the water pump controller 1 is connected with the sending module of the water pump controller 2, and the sending module of the water pump controller is connected with the sending module of the water pump controller 3. Specifically, the sending input/output interface of the sending module of the water pump controller 1 is connected with the sending input/output interface of the sending module of the water pump controller 2, the sending input/output interface of the sending module of the water pump controller 2 is connected with the sending input/output interface of the sending module of the water pump controller 3, and the sending input/output interface of the sending module of the water pump controller 2 is connected with the sending input/output interface of the sending module of the water pump controller 3.
The water pump controller is used for controlling the operation of the water pumps, and as shown in fig. 2, a pressure sensor is arranged at the water outlet of each water pump and used for detecting the pressure value of the water outlet of the water pump and transmitting the pressure value to the pressure transmission interface of the water pump controller corresponding to the water pump.
After the water pumps are powered on, each water pump is in a halt state by default. The sending input/output interface of the sending module of the water pump controller 1 sends an online request signal to the sending input/output interface of the sending module of the water pump controller 2, after the sending input/output interface of the sending module of the water pump controller 2 receives the online request signal, the sending input/output interface of the sending module of the water pump controller 2 sends an online response signal to the sending input/output interface of the sending module of the water pump controller 1, and the sending input/output interface of the sending module of the water pump controller 1 receives the online response signal; the sending input/output interface of the sending module of the water pump controller 2 sends an online request signal to the sending input/output interface of the sending module of the water pump controller 3, and after the sending input/output interface of the sending module of the water pump controller 3 receives the online request signal, the sending input/output interface of the sending module of the water pump controller 3 sends an online response signal to the sending input/output interface of the sending module of the water pump controller 2.
The sending receiving input/output interface of the sending module of the water pump controller of the current stage can receive the online response signal sent by the sending input/output interface of the sending module of the water pump controller of the next stage, and the water pump controller of the current stage monitors that the water pump controller is arranged at the next stage; and the sending receiving input/output interface of the sending module of the water pump controller of the current stage receives the online request signal, and the water pump controller of the current stage monitors that the water pump controller is arranged at the last stage of the water pump controller.
Referring to fig. 2, if the sending input/output interface of the sending module of the water pump controller 3 sends the connection request signal to the sending input/output interface of the sending module of the next-stage water pump controller, and the sending input/output interface of the sending module of the water pump controller 3 does not receive the connection response signal, the water pump controller 3 determines itself to be the tailrace pump controller; if the uplink receiving input/output interface of the uplink module of the water pump controller 1 does not receive the online request signal sent by the previous-stage water pump controller, the water pump controller 1 determines that the water pump controller is a head water pump controller; if the on-line receiving input/output interface of the sending module of the water pump controller 2 receives the on-line request signal sent by the sending input/output interface of the sending module of the water pump controller 1, and the sending receiving input/output interface of the sending module of the water pump controller 2 receives the on-line response signal sent by the on-line sending input/output interface of the sending module of the water pump controller 3, the water pump controller 2 determines itself to be the middle water pump controller.
In addition, if the sending receiving input/output interface of the sending module of the water pump controller does not receive the online request signal sent by the sending input/output interface of the sending module of the previous water pump controller, and the sending receiving input/output interface of the sending module of the water pump controller does not receive the online response signal sent by the sending input/output interface of the sending module of the next water pump controller, the water pump controller determines that the water pump controller is a single water pump.
The water pump controller in the embodiment of the invention adopts four common input and output interfaces of the singlechip to carry out online communication of the multiple water pumps, has low requirement on MCU resources and low peripheral cost, greatly simplifies the circuit and reduces the cost. Moreover, the water pump networking is realized through hardware identification, and the plug and play system is plug and play without complex settings of a host, a slave and the like.
The water pump startup procedure and the water pump shutdown procedure of the multiple water pump communication in the embodiment of the present invention will be described in detail with reference to fig. 2.
The method comprises the steps that (1) an on-line starting process is carried out, a water pump controller 1 controls a head water pump to run at a constant voltage first, and when the rotating speed of the head water pump reaches the rated rotating speed of a machine, or the power of the head water pump reaches the rated power of the machine, the head water pump is controlled to enter a running mode of rated power/rated rotating speed; when the water pump controller 1 detects that the pressure value of the water pressure at the water outlet of the head water pump is smaller than a preset pressure value, the sending input and output interface of the sending module of the water pump controller 1 sends an operation request signal to the sending input and output interface of the sending module of the water pump controller 2, the water pump controller 2 is started to enter an operation state, the sending input and output interface of the sending module of the water pump controller 2 receives the operation request signal, and then the middle water pump is controlled to enter a constant-pressure operation mode (firstly, the middle water pump operates at a constant pressure, and enters a rated power/rated rotation speed operation mode when the rotating speed reaches the rated rotating speed of the machine or the power reaches the rated power of the machine), when the water pump controller 2 detects that the pressure value is smaller than the preset pressure value, the water pump controller 3 is started to enter the operation state, and the sending input and output interface of the sending module of the water pump controller 3 controls the middle water pump to enter the constant-pressure operation mode after receiving the operation request signal; in addition, after the water pump controller 2 receives the operation request signal sent by the water pump controller 1, the sending input/output interface of the water pump controller 2 sends an operation response signal to the sending receiving input/output interface of the water pump controller 1; similarly, after the water pump controller 3 receives the operation request signal sent by the water pump controller 2, the sending input/output interface of the water pump controller 3 sends an operation response signal to the sending receiving input/output interface of the water pump controller 2.
In the embodiment of the invention, when the water pump controller determines that the water pump corresponding to the water pump controller is the tail water pump, the tail water pump is not controlled to be converted into the rated power/rated rotating speed running state, but is controlled to be in the constant-pressure running state all the time.
A shutdown process, when the water pump controller 3 determines that a shutdown condition is met, an upper sending input/output interface of the water pump controller 3 sends a shutdown request signal to an upper sending receiving input/output interface of the water pump controller 2, after the lower sending receiving input/output interface of the water pump controller 2 receives the shutdown request signal, the lower sending input/output interface of the water pump controller 2 sends a shutdown response signal to the upper sending receiving input/output interface of the water pump controller 3, the water pump controller 3 controls a tail water pump to stop running, and the water pump controller 2 controls a middle water pump to be converted from a rated power/rated rotation speed running mode to a constant-pressure running mode; when the water pump controller 2 determines that the stop condition is met, the up-sending input-output interface of the water pump controller 2 sends a stop request signal to the down-sending receiving input-output interface of the water pump controller 1, after the down-sending receiving input-output interface of the water pump controller 1 receives the stop request signal, the down-sending input-output interface of the water pump controller 1 sends a stop response signal to the up-sending receiving input-output interface of the water pump controller 2, the water pump controller 2 controls the middle water pump to stop running, and the water pump controller 1 controls the head water pump to be converted into a constant-pressure running mode from a rated power/rated rotating speed running mode; when the water pump controller 1 determines that water supply is not needed, the water pump of the control head stops running.
The stop condition here may be no water supply demand or water supply demand, but the water pump controller 3 determines that the pressure value obtained by the pressure sensor corresponding thereto is greater than a preset pressure value.
In one embodiment, as shown in fig. 2, each water pump controller may include a human-computer interaction module for setting a preset pressure value of each water pump in response to a setting operation by a user.
In a specific embodiment, a dual water pump online may be used, that is, a head water pump and a tail water pump are included, wherein the head water pump may also be referred to as a master and the tail water pump may be referred to as a slave. As shown in fig. 3, for the dual water pump on-line, the master water pump controller includes an issuing module, the issuing module includes an issuing sending input/output interface and an issuing receiving input/output interface, the slave water pump controller includes an issuing module, the issuing module includes an issuing sending input/output interface and an issuing receiving input/output interface, the issuing sending input/output interface of the issuing module of the master water pump controller communicates with the issuing receiving input/output interface of the issuing module of the slave water pump controller, and the issuing receiving input/output interface of the issuing module of the master water pump controller communicates with the issuing sending input/output interface of the issuing module of the slave water pump controller.
The specific communication mode in the embodiment of the present invention may be defined as high level or low level as a signal, the input/output interface receives and outputs a high-low signal with a fixed level, and the time is calculated by the timer.
The high level is taken as an example below. For example, the high level of 1ms is that the water pump controller of the current stage sends an online request signal to the water pump controller of the next stage, and the water pump controller of the next stage responds that the high level of 1ms is an online response signal. In the specific implementation, the high level at different times can be defined as different signals, and various signals can be designed according to the design requirement. The normal high or low is a communication interrupt signal which can be used for indicating the fault of the water pump controller and does not participate in the processes of online, operation and shutdown.
The specific embodiment of the water pump controller is online:
sending an input/output interface to send an online request signal by an issuing module of the water pump controller of the current stage, wherein the online request signal may be a signal shown in fig. 4a, that is, a high level lasts for 1ms, and a low level lasts for 4ms; after the uplink receiving input/output interface of the uplink module of the next-stage water pump controller receives the online request signal shown in fig. 4a sent by the current-stage water pump controller, the uplink sending input/output interface of the uplink module of the next-stage water pump controller sends an online response signal to the downlink receiving input/output interface of the downlink module of the current-stage water pump controller, where the online response signal may also be a signal shown in fig. 4a, that is, the high level lasts for 1ms, and the low level lasts for 4ms.
In the embodiment of the invention, the next-stage water pump controller can initialize first after receiving the online request signal sent by the current-stage water pump controller, and then sends the online response signal to the current-stage water pump controller.
Example of water pump operation:
after the water pump controller of the current stage determines that the operating condition of the water pump of the next stage is met, the sending input/output interface of the sending module of the water pump controller of the current stage sends an operating request signal to the sending input/output interface of the sending module of the water pump controller of the next stage, after the sending input/output interface of the sending module of the water pump controller of the next stage receives the operating request signal, the sending input/output interface of the sending module of the water pump controller of the next stage sends an operating response signal to the sending input/output interface of the sending module of the water pump controller of the current stage, the water pump controller of the next stage controls the corresponding water pump to operate, and the water pump enters an operating state.
In the embodiment of the present invention, the operation request signal and the operation response signal may be signals as shown in fig. 4b, i.e., the high level lasts for 3ms, and the low level lasts for 2ms.
The specific embodiment of the water pump shutdown:
the water pump is controlled to stop, and the water pump is monitored and determined by a water pump controller corresponding to the water pump, which will be described in detail below.
When the water pump controller of the current stage monitors that a shutdown condition is met, an upper sending input-output interface of an upper sending module of the water pump controller of the current stage sends a shutdown request signal to an upper sending receiving input-output interface of an upper sending module of the water pump controller of the previous stage, after the lower sending receiving input-output interface of the lower sending module of the water pump controller of the previous stage receives the shutdown request signal, the lower sending input-output interface of the lower sending module of the water pump controller of the previous stage sends a shutdown response signal to the upper sending input-output interface of the upper sending module of the water pump controller of the current stage, the water pump controller of the current stage controls the water pump to stop running and sends a shutdown confirmation signal to the water pump controller of the previous stage, and the water pump corresponding to the water pump controller of the previous stage is controlled to be switched from a rated rotating speed or rated power running mode to a constant voltage running mode after the water pump controller of the previous stage receives the shutdown confirmation signal.
It should be noted that, in the embodiment of the present invention, the two steps of sending the acknowledgement signal by the upper-stage water pump controller and controlling the corresponding water pump to switch from the rated rotation speed or the rated power operation mode to the constant-voltage operation mode may be performed simultaneously.
In the embodiment of the present invention, the shutdown request signal and the shutdown response signal may be signals as shown in fig. 4c, i.e., the high level lasts for 4ms, and the low level lasts for 1ms.
In the specific implementation, if the signals transmitted between the water pump controllers are normally high or normally low, which indicate that the water pump controllers are abnormal, the water pump controllers and the corresponding water pumps are in a fault state, and do not participate in the operations of online operation, running operation and shutdown.
In the embodiment of the present invention, the interrupt control signal may be a continuous high level or a continuous low level.
In implementations, there is also a mode of operation of a single water pump. After the single-machine water pump is powered on, if the receiving input/output interface of the sending module of the single-machine water pump controller does not receive the on-line request signal and the receiving input/output interface of the sending module of the single-machine water pump controller does not receive the on-line answer signal within the preset time length, the single-machine water pump mode is started.
Fig. 5 is a schematic diagram of a dual-water pump communication system.
S501, powering on a main water pump, and setting the main water pump as a main water pump controller through a man-machine interaction module;
s502, the master water pump controller sends an online request signal to the slave water pump controllers, and the type of each water pump controller is determined;
s503, the master water pump controller and the slave water pump controller all judge whether the pressure value detected by the pressure sensor is larger than or equal to a preset pressure value, if so, S504 is executed, otherwise, S510 is executed;
s504, the main water pump controller judges whether water is needed currently, if so, S505 is executed, otherwise, S506 is executed;
s505, the slave water pump controller controls the slave water pump to stop, and the master water pump controller controls the master water pump to run at a constant pressure so that the using pressure value is equal to a preset pressure value;
s506, the slave water pump controller sends a stop request signal to the master water pump controller;
s507, after receiving the stop request model sent by the slave water pump controller, the master water pump controller sends a stop response signal to the slave water pump controller;
s508, the slave water pump controller controls the slave water pump to stop and sends a stop confirmation signal to the master water pump controller;
s509, after receiving a stop confirmation signal sent by the slave water pump controller, the master water pump controller sends a confirmation response signal to the slave water pump controller and controls the master water pump to change into a constant-pressure operation mode;
s510, the main water pump controller judges whether the auxiliary water pump needs to be started, if yes, S511 is executed, and if not, S514 is executed;
s511, the main water pump controller controls the main water pump to operate at a constant pressure and sends an operation request signal to the slave water pump controller;
s512, after receiving the operation request signal sent by the main water pump controller, the slave water pump controller controls the slave water pump to start and sends an operation response signal to the main water pump controller;
s513, after receiving the operation response signal sent by the slave water pump controller, the main water pump controller controls the main water pump to switch from constant-pressure operation to rated rotation speed/rated power operation;
and S514, controlling the main water pump to operate at a constant pressure by the main water pump controller.
Fig. 6 is a schematic diagram of the operation flow of the multi-water pump communication system.
S601, electrifying each water pump controller and each water pump in the multi-water-pump communication system;
s602, each water pump controller sends an online request signal to determine the type of each water pump controller;
s603, the final-stage water pump controller acquires a pressure value through a pressure sensor corresponding to the final-stage water pump controller, and judges whether the pressure value is greater than or equal to a preset pressure value, if so, S604 is executed, and if not, S610 is executed;
the last water pump controller may be a last water pump controller in the water pump controllers corresponding to the currently operating water pumps in the multi-water pump communication system, for example, if all the water pumps in the multi-water pump communication system are operating, the last water pump controller is the last water pump controller, and if only the first water pump in the multi-water pump communication system is operating, the first water pump controller is the last water pump controller.
S604, the final-stage water pump controller judges whether water is needed currently, if yes, S605 is executed, and if not, S606 is executed;
s605, the last-stage water pump controller controls the water pump corresponding to the last-stage water pump controller to stop, and the last-stage water pump controller of the last-stage water pump controller controls the water pump corresponding to the last-stage water pump controller to run at a constant pressure;
it should be noted that, if all the water pumps in the multi-water-pump communication system are operated, the tail water pump controller controls the tail water pump to stop, and then the middle water pump controller sequentially controls the water pumps corresponding to the tail water pump to stop operation until the head water pump stops operation; if not all the water pumps in the multi-water-pump communication system operate, the last-stage water pump controller controls the water pump corresponding to the last-stage water pump controller to stop, the last-stage water pump controller controls the water pump corresponding to the last-stage water pump controller to operate at a constant pressure, and then other middle water pump controllers sequentially control the water pumps corresponding to the last-stage water pump controller to stop operating until the first water pump stops operating.
S606, the final-stage water pump controller sends a shutdown request signal to the upper-stage water pump controller;
s607, the last-stage water pump controller receives the stop request signal sent by the last-stage water pump controller and sends a stop response signal to the last-stage water pump controller;
s608, the final-stage water pump controller controls the corresponding water pump to stop and sends a stop confirmation signal to the upper-stage water pump controller;
s609, the last-stage water pump controller receives a stop confirmation signal sent by the last-stage water pump controller, sends a confirmation response signal to the last-stage water pump controller and controls the corresponding water pump to operate at a constant pressure;
s610, the final-stage water pump controller judges whether a next-stage water pump controller needs to be started, if so, S611 is executed, and otherwise, S614 is executed;
s611, the last-stage water pump controller controls the water pump corresponding to the last-stage water pump controller to operate at a constant pressure and sends an operation request signal to the next-stage water pump controller;
s612, the next-stage water pump controller receives the operation request signal, controls the operation of the corresponding water pump, and sends an operation response signal to the final-stage water pump controller;
s613, the final-stage water pump controller receives the operation response signal and controls the water pump corresponding to the final-stage water pump controller to change the constant-pressure operation into the rated rotating speed/rated power operation;
and S614, the final-stage water pump controller controls the water pump corresponding to the final-stage water pump controller to operate at a constant pressure.
Fig. 7 is a schematic diagram illustrating a starting process of a multiple water pump according to an embodiment of the present invention.
S701, electrifying;
s702, sending an online request signal;
s703, waiting for a preset time, and receiving a connection response signal by the head water pump controller, wherein the connection request signal is not received; waiting for a preset time, receiving an online response signal and an online request signal by the intermediate water pump controller; waiting for a preset time, receiving the on-line response signal by the tail water pump controller, and receiving the on-line request signal;
s704, determining a useful water requirement by a head water pump controller;
it should be noted that the head water pump controller determines the useful water demand, which may be the receipt of a water demand.
S705, controlling the head water pump to start by the head water pump controller, and operating at a constant pressure;
s706, determining that the pressure value is smaller than a preset pressure value by the head water pump controller;
s707, the head water pump controller sends an operation request signal to the middle water pump controller;
s708, after receiving the operation request signal, the intermediate water pump controller sends an operation response signal to the head water pump controller;
s709, the head water pump controller controls the head water pump to switch from constant-pressure operation to rated rotation speed or rated power operation;
s710, the intermediate water pump controller controls the intermediate water pump to start and operates at a constant pressure;
s711, the intermediate water pump controller determines that the pressure value is smaller than a preset pressure value;
s712, the middle water pump controller sends an operation request signal to the tail water pump controller;
s713, after the tail water pump controller receives the operation request signal, an operation response signal is sent to the middle water pump controller;
s714, the intermediate water pump controller controls the intermediate water pump to be switched from constant-pressure operation to rated rotation speed or rated power operation;
and S715, controlling the tail water pump to start by the tail water pump controller, and operating at a constant pressure.
Fig. 8 is a schematic flow chart of a multi-water pump shutdown according to an embodiment of the present invention.
S801, determining that a shutdown condition is met by a tail water pump controller;
s802, the tail water pump controller sends a stop request signal to the middle water pump controller;
s803, after receiving the shutdown request signal sent by the tail water pump controller, the middle water pump controller sends a shutdown response signal to the tail water pump controller;
s804, the tail water pump controller controls the tail water pump to stop;
s805, the tail water pump controller sends a stop confirmation signal to the middle water pump controller;
s806, the intermediate water pump controller controls the intermediate water pump to be switched from the operation at the rated rotating speed or the rated power to the operation at a constant voltage;
s807, the middle water pump controller sends a confirmation response signal to the tail water pump controller;
s808, determining that a shutdown condition is met by the intermediate water pump controller;
s809, the middle water pump controller sends a stop request signal to the head water pump controller;
s810, after receiving a stop request signal sent by the middle water pump controller, the head water pump controller sends a stop response signal to the middle water pump controller;
s811, the intermediate water pump controller controls the intermediate water pump to stop;
s812, the middle water pump controller sends a stop confirmation signal to the head water pump controller;
s813, the head water pump controller controls the head water pump to be switched from a rated rotating speed or rated power operation to a constant pressure operation;
s814, the head water pump controller sends a confirmation response signal to the middle water pump controller;
s815, determining that a shutdown condition is met by a head water pump controller;
and S816, controlling the head water pump to stop by the head water pump controller.
Various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (17)
1. The utility model provides a many water pump communication system which characterized in that, includes many water pumps and the water pump controller who corresponds with every water pump:
the water pump controller is used for sending a response signal to the upper-stage water pump controller after receiving a request signal sent by the upper-stage water pump controller so as to enable the water pump controller to be communicated with the upper-stage water pump controller, and/or receiving the response signal sent by the lower-stage water pump controller after sending the request signal to the lower-stage water pump controller so as to enable the water pump controller to be communicated with the lower-stage water pump controller;
the water pump controller comprises an uploading module and an issuing module, and the uploading module of the water pump controller of the current stage is communicated with the issuing module of the corresponding water pump controller of the previous stage;
the upper sending module comprises an upper sending and receiving input and output interface and an upper sending and receiving input and output interface, and the lower sending module comprises a lower sending and receiving input and output interface and a lower sending and input and output interface;
the upper sending input/output interface of the water pump controller is connected with the lower sending input/output interface of the upper water pump controller, and the upper sending input/output interface of the water pump controller is connected with the lower sending input/output interface of the upper water pump controller.
2. The system of claim 1, wherein the water pump controller comprises a head water pump controller and a tail water pump controller, or a head water pump controller, a middle water pump controller, and a tail water pump controller.
3. The system of claim 2, wherein the request signal is a connection request signal and the response signal is a connection response signal;
the water pump controller determines itself to be the head water pump controller by:
and within a preset time length, sending the online request signal, receiving the online response signal and not receiving the online request signal.
4. The system of claim 2, wherein said request signal is an on-line request signal and said response signal is an on-line response signal;
the water pump controller determines itself to be the intermediate water pump controller by:
and within a preset time length, sending the online request signal, receiving the online response signal and receiving the online request signal.
5. The system of claim 2, wherein the request signal is a connection request signal and the response signal is a connection response signal;
the water pump controller determines itself to be the tailwater pump controller by:
and within a preset time length, sending the online request signal, not receiving the online response signal and receiving the online request signal.
6. The system of claim 3, wherein the head water pump controller is further to:
and controlling the head water pump corresponding to the head water pump to operate at a constant pressure, and when the rotating speed of the head water pump reaches the rated rotating speed or the power reaches the rated power, controlling the head water pump to enter a rated rotating speed or rated power operation mode.
7. The system of claim 6, wherein the request signal is a run request signal and the reply signal is a run reply signal:
and the head water pump controller or the middle water pump controller is used for sending the operation request signal to a next-stage water pump controller and receiving the operation response signal sent by the next-stage water pump controller after the operation condition is determined to be met, so that the next-stage water pump controller controls the water pump corresponding to the next-stage water pump controller to operate.
8. The system of claim 7, further comprising a pressure sensor disposed at the water pump outlet; the operating conditions include:
and the pressure value acquired by the head water pump controller or the middle water pump controller through the corresponding pressure sensor is smaller than a preset pressure value.
9. The system of claim 7, wherein the next stage water pump controller is to:
and after receiving the operation request signal sent by the head water pump controller or the middle water pump controller, sending the operation response signal to the head water pump controller or the middle water pump controller, and controlling the operation of the water pump corresponding to the operation response signal.
10. The system of claim 9, wherein the next stage water pump controller is specifically configured to:
if the next-stage water pump controller is the middle water pump controller, controlling the corresponding water pump to operate at a constant pressure, and when the rotating speed of the water pump reaches the rated rotating speed or the power reaches the rated power, controlling the corresponding water pump to enter a rated power or rated rotating speed operation mode;
and if the next-stage water pump controller is a tail water pump controller, controlling the corresponding water pump to operate at a constant pressure.
11. The system of claim 2, wherein the request signal is a shutdown request signal, and the response signal is a shutdown response signal:
the tail water pump controller or the middle water pump controller is used for sending a stop operation signal to the corresponding upper-stage water pump controller after the stop condition is met, and controlling the corresponding water pump to stop operating after receiving a stop response signal sent by the upper-stage water pump controller; and after the tail water pump controller or the intermediate water pump controller controls the corresponding water pump to stop running, a stop confirmation signal is sent to the corresponding upper-stage water pump controller.
12. The system of claim 11, further comprising a pressure sensor disposed at the water pump outlet; the shutdown conditions include:
no water supply requirement exists; or
And the tail water pump controller or the middle water pump controller determines that the pressure value obtained by the pressure sensor corresponding to the tail water pump controller is greater than a preset pressure value.
13. The system of claim 12, wherein the determination of the water supply requirement is made by:
when the tail water pump controller or the middle water pump controller determines that the pressure value acquired through the pressure sensor corresponding to the tail water pump controller is larger than a preset pressure value, after the rotating speed of the water pump corresponding to the middle water pump controller is controlled to be reduced, if the pressure value is reduced, it is determined that a water supply demand exists, and if not, it is determined that no water supply demand exists.
14. The system of claim 11, wherein the superior water pump controller is to:
after the shutdown operation signal sent by the tail water pump controller or the middle water pump controller is received, sending a shutdown response signal to the tail water pump controller or the middle water pump controller;
and after receiving the shutdown confirmation signal sent by the tail water pump controller or the middle water pump controller, sending the confirmation response signal to the tail water pump controller or the middle water pump controller, and controlling the water pump corresponding to the upper-stage water pump controller to be changed from a rated rotating speed or a rated power operation mode to a constant-pressure operation mode.
15. The system of claim 1, wherein the request signal and/or the reply signal is a square wave signal of a preset pulse width.
16. The system of claim 1, wherein if the request signal or the response signal is normally high or normally low, it is determined that the water pump controller that sent the request signal or the response signal and the water pump corresponding thereto are in a fault state.
17. The system of any one of claims 1-16, wherein the water pump controller comprises a human-computer interaction module;
and the human-computer interaction module is used for responding to the setting operation of the user and setting the corresponding preset pressure value.
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| CN202211045983.1A CN115419578A (en) | 2022-08-30 | 2022-08-30 | Multi-water-pump communication system |
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