CN108561318A - A kind of Backpack type all-in-one machine master ＆ slave control system and method - Google Patents
A kind of Backpack type all-in-one machine master ＆ slave control system and method Download PDFInfo
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- CN108561318A CN108561318A CN201711269767.4A CN201711269767A CN108561318A CN 108561318 A CN108561318 A CN 108561318A CN 201711269767 A CN201711269767 A CN 201711269767A CN 108561318 A CN108561318 A CN 108561318A
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- pump
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- frequency converter
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
Abstract
The present embodiments relate to converter technique fields, disclose a kind of Backpack type all-in-one machine master ＆ slave control system and method.In the present invention, a kind of Backpack type all-in-one machine master ＆ slave control system is provided, including：The Backpack type all-in-one machine of N number of communication connection, N are the natural number more than 1；In the Backpack type all-in-one machine of N number of communication connection, one is host, remaining is slave；Backpack type all-in-one machine includes frequency converter and pump, and frequency converter and pump connect；Frequency converter integrated programmable logic control function；Frequency converter in host is used for the operating status according to the pump in Programmable logical controller function control host and slave so that the fluctuation that can reduce hydraulic pressure simplifies the mode of connection of system, saves the use cost of system.
Description
Technical field
The present embodiments relate to converter technique field, more particularly to a kind of Backpack type all-in-one machine master ＆ slave control system and side
Method.
Background technology
Currently, the water of water supply is adjusted plus the mode of adjustment outlet valve opening for water management generally use water pump constant-speed operation
Measure hydraulic pressure.Varying speed and constant pressure feed water control device can significantly improve water supply network for water environment, which can basis
Ductwork pressure changes, and automatically adjusts the rotating speed of pump motor and the input of Duo Tai pump motors and exits, and pipe network trunk is made to export
End is maintained at constant setup pressure value, and entire water system remains energy-efficient and operates in optimum state.Existing skill
One is mostly used in art drags multiplexing frequency conversion combination combined type variable-flow variable frequency water supply.
Inventor has found that at least there are the following problems in the prior art：One drags more modes to realize, needs to carry out work frequency conversion
The handover operation of device can bring the fluctuation of hydraulic pressure, while using devices such as relay, contactors, improve making for system in this way
With cost so that system wiring is more complicated.
Invention content
Embodiment of the present invention is designed to provide a kind of Backpack type all-in-one machine master ＆ slave control system and method so that can
To reduce the fluctuation of hydraulic pressure, the mode of connection of system is simplified, saves the use cost of system.
In order to solve the above technical problems, embodiments of the present invention provide a kind of Backpack type all-in-one machine master ＆ slave control system
System, including：
The Backpack type all-in-one machine of N number of communication connection, N are the natural number more than 1；
In the Backpack type all-in-one machine of N number of communication connection, one is host, remaining is slave；
Backpack type all-in-one machine includes frequency converter and pump, and frequency converter and pump connect；
Frequency converter integrated programmable logic control function；
Frequency converter in host is used for the operation shape according to the pump in Programmable logical controller function control host and slave
State.
Embodiments of the present invention additionally provide a kind of Backpack type all-in-one machine master-slave control method, including：
Frequency converter in host detects whether to receive start stop command, start stop command carrying start and stop pump number；
If the frequency converter in host receives start stop command, judge whether start and stop pump number is main pump number；
If start and stop pump number is equal to host pump number, the pump in Frequency Converter Control host in host executes start stop command；
Pump in slave executes operating instruction after the operating instruction that the frequency converter in receiving host is sent.
In terms of existing technologies, the Backpack type all-in-one machine of N number of communication connection, N is more than 1 to embodiment of the present invention
Natural number；In the Backpack type all-in-one machine of N number of communication connection, one is host, remaining is slave；Backpack type all-in-one machine includes frequency conversion
Device and pump, frequency converter and pump connect.Since each Backpack type all-in-one machine includes a frequency converter and pump, using full frequency conversion control
System is conducive to the impact for avoiding work frequency conversion from switching to power grid, and is conducive to hydraulic pressure and adjusts more steady and fast response time.It will
Frequency converter and pump group load as a whole, it is proposed that the concept of all-in-one machine, frequency converter integrated programmable logic control
(Programmable Logic Controller, referred to as " PLC ") function, is omitted PLC unit, reduces outer distributor member
Part reduces system cost, while eliminating relay, contactor etc., simplifies the electrical wiring of system, enhances system
Reliability.Frequency converter in host is used for the operation according to the pump in Programmable logical controller PLC function controls host and slave
State, i.e. frequency converter in host can control the pump in whole system, and because being integrated with PLC functions in PLC
Logic control program can change as needed, to change working time and the working condition of each element, meet different situations
It is required that.Compared with the hardware logic electric circuits control system such as relay, contactor, using the Frequency Converter Control for being integrated with PLC functions
Whole system has greater flexibility and versatility.
It is connected in addition, being communicated by CAN bus between N number of Backpack type all-in-one machine.Compared to general communication bus, CAN is total
The data communication of line has reliability outstanding, real-time and flexibility.Therefore, total by CAN between N number of Backpack type all-in-one machine
Line communication connection is conducive to preferably complete data communication between each Backpack type all-in-one machine.
In addition, frequency converter includes：Principal and subordinate's arbitration modules, principal and subordinate's arbitration modules are used for according to pre- in programmable control function
If distribution mechanism distribution host and slave.Be conducive to frequency converter in top n Backpack type all-in-one machine, divided according to distribution mechanism
Host and slave are allotted, so that being assigned to the operation that host preferably controls whole system.
In addition, further including in frequency converter：Master-slave swap module, master-slave swap module are connected with principal and subordinate's arbitration modules；Principal and subordinate
Handover module is used for when host breaks down, and master is redistributed according to preset distribution mechanism in Programmable logical controller function
Machine.Even if the host of distribution breaks down, can also again be divided according to preset distribution mechanism in Programmable logical controller function
With host, be conducive to avoid whole system and be stopped because of the failure of a host, entire control system still can be into
Row Isobarically Control ensure that reliability and the flexibility of system.
In addition, further including in frequency converter：Isobarically Control module is pumped, pump Isobarically Control module is connected with principal and subordinate's arbitration modules；
Pressure value of the Isobarically Control module for the pipeline of receiving sensor feedback is pumped, and according to the pressure value of pipeline and given pressure value
Control piper pressure of supply water is constant.It is permanent that pressure value by receiving pipeline can control to adjust current pipeline pressure of supply water
It is fixed, meet the supply and demand needs of current water consumption.
In addition, the frequency converter of host is additionally operable to when detecting that CAN bus communication connection is broken down, control pump is with lower limit
Frequency is run.Water system may be made unstable with regard to shutting down if only because CAN bus communication connection is broken down, therefore
When CAN bus communicates connection and breaks down, control pump is run with lower frequency limit, and system is not only made to maintain to supply to a certain extent
Water also provides the safety of pump certain guarantee using lower frequency limit operation.
Description of the drawings
One or more embodiments are illustrated by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not constituted to embodiment, the element with same reference numbers label is expressed as similar element in attached drawing, removes
Non- to have special statement, composition does not limit the figure in attached drawing.
Fig. 1 is the structural schematic diagram according to the Backpack type all-in-one machine master ＆ slave control system in first embodiment of the invention；
Fig. 2 is according to a Backpack type in the Backpack type all-in-one machine master ＆ slave control system in second embodiment of the invention
The structural schematic diagram of frequency converter in all-in-one machine；
Fig. 3 is the flow diagram according to the Backpack type all-in-one machine master-slave control method in third embodiment of the invention.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Each embodiment be explained in detail.However, it will be understood by those skilled in the art that in each embodiment party of the present invention
In formula, in order to make the reader understand this application better, many technical details are proposed.But even if without these technical details
And various changes and modifications based on the following respective embodiments, it can also realize the application technical solution claimed.
The first embodiment of the present invention is related to a kind of Backpack type all-in-one machine master ＆ slave control systems.The core of present embodiment
It is that the Backpack type all-in-one machine of N number of communication connection, N are the natural number more than 1；In the Backpack type all-in-one machine of N number of communication connection, one
A is host, remaining is slave；Backpack type all-in-one machine includes frequency converter and pump, and frequency converter and pump connect；Being integrated in frequency converter can
Programmed logic control function；Frequency converter in host is used for according to the pump in Programmable logical controller function control host and slave
Operating status so that the fluctuation that can reduce hydraulic pressure simplifies the mode of connection of system, saves the use cost of system.
The realization details of the Backpack type all-in-one machine master ＆ slave control system of present embodiment is specifically described below, the following contents is only
For convenience of the realization details provided is understood, not implement the necessary of this programme.
The concrete structure schematic diagram of Backpack type all-in-one machine master ＆ slave control system in present embodiment is as shown in Figure 1, specific
Including：
N number of Backpack type all-in-one machine by CAN bus communication connection, N are the natural number more than 1；The back of the body of N number of communication connection
In packet mode all-in-one machine, one is host, remaining is slave；Backpack type all-in-one machine includes frequency converter and pump, and frequency converter and pump connect.
Such as shown in Figure 1, there is N number of Backpack type all-in-one machine, then can select arbitrary in N number of Backpack type all-in-one machine
One is used as host, others to be used as slave.Each Backpack type all-in-one machine is communicated by CAN bus and is connected, and CAN belongs to live total
Line scope, it is a kind of effective ship type communication network for supporting distributed AC servo system or real-time control.Compared to general communication bus,
The data communication of CAN bus has reliability outstanding, real-time and flexibility, and with higher reliability and good
Error detection capability is conducive to preferably complete data communication between each Backpack type all-in-one machine, to improve master ＆ slave control
The practicability of system in practical applications.Data of the CAN bus communication comprising transmission can be host and slave working condition,
Fault level, analog input failure, CAN communication failure, external operation coomand mode, the parameter ready status being likely to occur
Deng, target frequency, slave start stop command etc..There are one frequency converters, each frequency converter to connect in each Backpack type all-in-one machine
Each pump can be numbered in one pump, as in Fig. 1 pump 1, pump 2, pump 3 is until pump N.
Frequency converter integrated programmable logic control function；Frequency converter in host according to programmable control function for controlling
The operating status of pump in host and slave.
Specifically, can integrated programmable logic control PLC functions in each frequency converter so that each frequency converter
The function that PLC may be implemented carries out logic control, to control the operating status of each pump by internal processes.And because every
One Backpack type all-in-one machine all has there are one frequency converter, and integrating PLC function in each frequency converter, therefore each is carried on the back
Packet mode all-in-one machine all can serve as host to control entire dress system.Such as first Backpack type all-in-one machine is host in Fig. 1,
Remaining is slave, then frequency converter 1 can serve as the controller of whole system, needs to control host according to actual water supply
With the operating status of N number of pump in slave.
The frequency converter of host is additionally operable to when detecting that CAN bus communication connection is broken down, and control pump is with lower frequency limit
Operation.
Specifically, if first Backpack type all-in-one machine is host in Fig. 1, frequency converter 1 is the frequency converter of host, that
Whether frequency converter 1 can be communicated with the CAN bus in detecting system and be broken down, and can be controlled corresponding when finding failure
Pump run with lower frequency limit.Such as frequency converter 1 needs to control pump 1, pump 2 and pump 3 to supply water together according to actual water consumption,
But the CAN bus communication between second Backpack type all-in-one machine and third Backpack type all-in-one machine is broken down, then pump 3 will connect
The control instruction that frequency converter 1 is sent out is can not receive, can not together be supplied water with pump 1, pump 2.It is supplying water if be at before pump 3
State breaks down since CAN bus communicates, then will be unable to receive the operation order of host, operation order may be to open
It is also likely to be the running frequency that host is sent to stop order.In a word in order to ensure the constant of pressure of supply water, and ensure pump 1, pump 2 and pump
3 are all supplying water, and can control pump 3 and be run with a lower frequency limit, lower frequency limit can be those skilled in the art according to practical need
If being first arranged, to ensure that system can be run in catastrophic failure according to pre-set comparatively safe frequency.At this point,
In order to ensure the comparatively safe of whole system, pump 3 can also directly be controlled by external command namely staff can be direct
Control is made to the start and stop of pump 3.Certainly with lower frequency limit operation only a measure for coping with catastrophic failure, make whole system not
As for being affected in a short time, when frequency converter 1 detects that system CAN bus communication breaks down, can also send out in time
Warning information reminds staff to handle failure, ensures the normal operation of whole system.
Compared with prior art, in first embodiment of the invention, it is N number of communication connection Backpack type all-in-one machine, N be more than
1 natural number；In the Backpack type all-in-one machine of N number of communication connection, one is host, remaining is slave；Backpack type all-in-one machine includes
Frequency converter and pump, frequency converter and pump connect.Since each Backpack type all-in-one machine includes a frequency converter and pump, become using complete
Frequency controls, and is conducive to the impact for avoiding work frequency conversion from switching to power grid, and is conducive to hydraulic pressure and adjusts more steady and response speed
Soon.Frequency converter and pump group are loaded as a whole, it is proposed that the concept of all-in-one machine, frequency converter integrating PLC function omit
PLC unit, reduces outer distributor element, reduce system cost, while eliminating relay, contactor etc., it simplifies
The electrical wiring of system enhances the reliability of system.Frequency converter in host is used for according to PLC function controls host and slave
In pump operating status, i.e. frequency converter in host can control the pump in whole system because be integrated with PLC functions
System, and the logic control program in PLC can be changed as needed, to change working time and the working condition of each element,
Meet different situations requirement.Compared with the hardware logic electric circuits control system such as relay, contactor, using being integrated with PLC functions
Frequency Converter Control whole system have greater flexibility and versatility.
Second embodiment of the invention is related to a kind of Backpack type all-in-one machine master ＆ slave control system.Second embodiment is first
Being further improved for embodiment, mainly thes improvement is that, frequency converter includes principal and subordinate's arbitration modules 101, master-slave swap mould
Block 102 pumps Isobarically Control 03, the Backpack type one in Backpack type all-in-one machine master ＆ slave control system in second embodiment
The structural schematic diagram of frequency converter is as shown in Fig. 2, specifically include in machine：
Principal and subordinate's arbitration modules 101 in frequency converter are used for according to preset dispenser in the Programmable logical controller function
System distribution host and slave.
Specifically, how to determine in N number of Backpack type all-in-one machine which be host which be that slave can be by pre-
If distribution mechanism realize that preset distribution mechanism can pass through PLC logics according to actual needs by those skilled in the art
Control program is configured.Such as N number of Backpack type all-in-one machine is numbered, number is 1 to N respectively from small to large, is preset
Distribution mechanism can be that will number minimum Backpack type all-in-one machine under current state to be used as host, that is, number the knapsack for being 1
As host, remaining can also will number maximum formula all-in-one machine as slave, certain preset distribution mechanism under current state
Backpack type all-in-one machine as host, as slave, what present embodiment was merely given as two kinds of default distribution mechanisms can for remaining
Can, it is not limited to this in practical applications.
It should be noted that due to being integrated with PLC functions in frequency converter, the logic control program in PLC can root
According to needing to change, that is to say, that preset distribution mechanism can directly be changed by changing the logic control program in PLC
Become, to meet different demands for control.
Master-slave swap module 102 in frequency converter, is connected with principal and subordinate's arbitration modules 101, for when host breaks down,
Host is redistributed according to preset distribution mechanism in Programmable logical controller function.
Specifically, it may be that pump in host breaks down that host, which breaks down, it is also possible to the frequency converter in host
It breaks down, then master-slave swap module 102 can detect both failures, and upon failure detection can also basis
Preset distribution mechanism redistributes host in PLC functions.Make entire Backpack type all-in-one machine master ＆ slave control system be unlikely to because
The failure of this machine of host and cause whole system to be stopped, enhance the practicability and reliability of system.Such as
Preset distribution mechanism can be that minimum Backpack type all-in-one machine will be numbered under current state as host, the master that number is 1
Machine breaks down, then according to preset distribution mechanism, selects under current state other than numbering the host for 1 failure,
Minimum slave is numbered as new host, namely it is the Backpack type all-in-one machine that number is 2 to redefine new host, to make
Normal operation can be continued by obtaining whole system.
Pump Isobarically Control module 103 in frequency converter is connected with principal and subordinate's arbitration modules 101；Isobarically Control module 103 is pumped to use
In the pressure value of the pipeline of receiving sensor feedback, and according to the pressure value of pipeline and given pressure value control piper pressure of supply water
It is constant.
Specifically, the pressure value for the pipeline that pump Isobarically Control module 103 can be fed back with receiving sensor, sensor can be with
For hydraulic pressure sensor, the hydraulic pressure being located on pipeline in signal piping.The size of hydraulic pressure is changed into electric current or electricity by hydraulic pressure sensor
Pressure sends pump Isobarically Control module 103 to, pump Isobarically Control module 103 can basis given pressure value and the biography that receives
Sensor send the measured value of descaling line pressure integrates the system tune that certain Rule adjusting is sent out and connects signal, to which control piper supplies
Water pressure is constant.Rule adjusting can be completed by the logic control program in PLC, to realize hydraulic pressure given value and value of feedback
Adjusting work, can also realize control pump operation and switching.It is noted that other control logics of pump can also be by
PLC undertakes, such as：Manually, conversion, the working status indication of pump, the alarm of the operation irregularity of pump, the self-test of system are automatically brought into operation
Deng.
Compared with prior art, second embodiment of the invention, frequency converter include that principal and subordinate's arbitration modules are conducive to working as
In top n Backpack type all-in-one machine, host and slave are distributed according to distribution mechanism, preferably controlled so that being assigned to host
The operation of whole system.Further include master-slave swap module in frequency converter, master-slave swap module is connected with principal and subordinate's arbitration modules；So that
Even if the host of distribution breaks down, master can also be redistributed according to preset distribution mechanism in Programmable logical controller function
Machine is conducive to that whole system is avoided to be stopped because of the failure of a host, and entire control system still can carry out perseverance
Voltage-controlled system ensure that reliability and the flexibility of system.Further include pump Isobarically Control module in frequency converter, pumps Isobarically Control module
It is connected with principal and subordinate's arbitration modules, it is constant that the pressure value by receiving pipeline can control to adjust current pipeline pressure of supply water,
Meet the supply and demand needs of current water consumption.
Third embodiment of the present invention is related to a kind of Backpack type all-in-one machine master-slave control method, is applied to above-mentioned knapsack
Formula all-in-one machine master ＆ slave control system.The core of present embodiment is that the frequency converter in host detects whether to receive start and stop life
It enables, start stop command carries start and stop pump number；If the frequency converter in host receives start stop command, judge start and stop pump number whether be
Host pump number；If start and stop pump number is equal to host pump number, the pump in Frequency Converter Control host in host executes start stop command；
Pump in slave executes operating instruction so that above-mentioned Backpack type after the operating instruction that the frequency converter in receiving host is sent
All-in-one machine master ＆ slave control system can utilize the fortune pumped in the master ＆ slave control control method control whole system in present embodiment
Row state, to preferably realize constant pressure water supply.Below to the reality of the Backpack type all-in-one machine master ＆ slave control system of present embodiment
Existing details is specifically described, and the following contents only for convenience of the realization details provided is understood, not implements the necessary of this programme.
The idiographic flow schematic diagram of Backpack type all-in-one machine master-slave control method in present embodiment is as shown in figure 3, specific
Including：
Step 201：Frequency converter in host detects whether to receive start stop command, start stop command carrying start and stop pump number；Such as
Fruit receives start stop command and then enters step 202, and the flow terminates if being not received by start stop command.
Specifically, start stop command can be the order that staff sends out whole system after carrying out the initialization, just
Beginningization can be each pump to be numbered in advance, and determine the sum of pump, be configured to the relevant parameter of each machine, and
Whole system is checked.Generally it can be thought that start stop command is, what staff sent out after ensuring that preparation is errorless
Instruction, start stop command can be realized by start button on console or stop button, also be carried in start stop command
Pump number.Such as system determines that the Backpack type all-in-one machine that pump number is 1 is host, then in host according to preset distribution mechanism
Frequency converter can detect whether to receive start stop command, 302 are entered step if receiving start-stop order, otherwise the flow knot
Beam.
Step 202：Judge whether start and stop pump number is main pump number；If so, 203 are thened follow the steps, if otherwise executed
Step 204.
Specifically, whether the frequency converter of host can judge the pump number carried in start-stop order after receiving start-stop order
It is the pump number of host, because staff is when sending out start-stop order, in fact it could happen that is carried in start-stop order is not host
Pump number but the pump number of other slaves, thus also need to after receiving start stop command to judge pump number that start stop command carries whether be
The pump number of host, it is ensured that the frequency converter of host controls the pump operation of host first.Such as if what is carried in start stop command opens
Termination of pumping number is pump 1, and the pump number of host be exactly pump 1, then be put into step 303 control host in pump execute start stop command,
Otherwise 304 are entered step.
Step 203：Pump in Frequency Converter Control host in host executes start stop command, and sends operation to slave and refer to
It enables.
Specifically, the pump in Frequency Converter Control host in host brings into operation, can according to frequency converter it is given
Frequency, voltage, the pump for controlling host bring into operation.After the pump of host brings into operation, the frequency converter of host can be according to practical water supply
The size of amount sends operating instruction to slave, can send operation according to the pressure value and given pressure value of pipeline to slave and refer to
It enables.The pressure value of pipeline can be the pressure value for the sensor feedback that the frequency converter of host receives, and sensor can be that hydraulic pressure passes
Sensor, the hydraulic pressure being located on pipeline in signal piping are to level pressure according to the given pressure value of the water supply currently needed
Force value.The pressure value of given voltage value and pipeline is converted into voltage value according to a certain percentage.The frequency converter of host is to giving
The deviation of level pressure force value and the pressure value of pipeline carries out the deviation that PID is adjusted namely to given voltage and feedback voltage and carries out
PID is adjusted, and so as to realize pump group management by the logical program in PLC, is sent and is transported to slave according to the result that PID is adjusted
Row instruction.PID adjustings are carried out to the difference of two voltage, frequency converter usually uses Analog control mode, analog input end
The analog signal that sensor is sent is received, output end is sent out the deviation of given value and value of feedback and obtained after PID is handled
Analog signals, and the variation of signal changes the output frequency of frequency converter according to this, the rotating speed to control pump reaches to hydraulic pressure
Pressure controls.
Such as constant water pressure, then when hydraulic pressure reduces, the output frequency for increasing frequency converter is needed, and
One pump working is when cannot meet constant pressure to require, at this moment to need to start second or third platform water pump.There are one sentence in this way
Disconnected standard is whether the output frequency of frequency converter reaches set upper frequency limit value to decide whether to start newly pump.For
Judge that the working frequency of frequency converter reaches the certainty of the upper limit, should filter off what the frequency fluctuation caused by accidentalia was reached
The case where upper frequency limit value, is considered as taking time filtering situation in a program.That is, the output frequency in frequency converter reaches
When to set upper frequency limit value, frequency converter can send operating instruction to the pump of slave, a primary plus pump, add after pump again into
Row detects and then judges the regulating step of next step.
When user's water consumption reduces, the pressure in pipeline is gone up, and needs to subtract pump, in line with the principle first at first stopped, if
Pump 1 first starts, and pump 1 first stops, if water consumption further decreases, followed by termination of pumping 2.If water consumption reduce again (such as
In the case of the late into the night nobody or the few's water), output frequency reduces, and is pre-set when frequency converter detects that output frequency is less than
Sleep frequency and this state being less than continue for the preset time and then initially enter dormant state.In order to prevent in the short time
" oscillation " phenomenon when from when interior pump needs that an acknowledging time T is arranged, if the time less than sleep frequency is less than T, frequency conversion
Device may not necessarily handle it, only when less than the time of sleep frequency it is longer be more than acknowledging time T when, pump can just locate
In suspend mode.
After the past at night, arrival on daytime water consumption starts to increase, if the given voltage value and feedback voltage that detect
The deviation of value is more than pre-set wake-up deviation, then it is assumed that the dormant state of pump should be waken up, and waking up deviation can be by this
Field technology personnel are configured according to actual needs.When only needing a pump that can realize water supply, in order to mitigate a pump
Operating pressure, the pump impeller of pump and host that slave can be arranged changes jobs.Such as control provides arbitrary one in requiring
Water pump continuous operation is no more than 3 hours, then can control keeps the rotation in 3 hours of each pump work primary, to be unlikely to make confession
Water task is fallen at one on pump, the effective work for the system that is more advantageous to of sharing out the work and help one another.
That is, when satisfaction adds pump, subtracts pump, suspend mode, rotation condition, the frequency converter of host can send corresponding operation
Instruction makes each pump work in coordination and completes water supply work, and because each Backpack type all-in-one machine may be used as host, because
Can be realized when this any one Backpack type all-in-one machine is as host corresponding plus pump, subtract pump, suspend mode, rotation operation, and
In the assistance for needing slave, operating instruction is sent to slave.
Step 204：The frequency converter of host sends a warning message.
Specifically, if the start and stop pump number carried in start-stop order is not the pump number of host, such as, in start-stop order
The start and stop pump number of carrying is pump 2, and the pump number of host is pump 1, is carried in start-stop order then the frequency converter of host can detect
Start and stop pump number be not host pump number, to send out warning information, system can't execute current start stop command.It sends and accuses
Alert information can make staff learn that currently transmitted start stop command is wrong, be conducive to indicate that staff sends out carrying host
The start stop command of pump number is identified the validity for ensureing instruction execution by principal and subordinate, advantageously ensures that the control logic of whole system
According to orderly progress is pre-set, to improve control process volume validity and practicability.
It should be noted that in order to avoid when pump number is arranged due to neglect two different pumps have been arranged to it is identical
Pump number, present embodiments provide for following two solutions, but are not limited thereto in practical applications.Such as when
After the pump number of one Backpack type all-in-one machine is set as 1, when the pump number of second Backpack type all-in-one machine is arranged, if selection number
1, when by confirming button, it can show that setting pump number is unsuccessful, it is identical so as to avoid two different pumps being arranged to
Pump number.Say that system does not prompt error to make first Backpack type all-in-one machine and second Backpack type one when pump number is arranged for another example
Pump number in body machine is arranged to 1, and if the Backpack type all-in-one machine that pump number is 1 is host, frequency converter is receiving carrying
The pump operation or second back of the body in first Backpack type all-in-one machine of control can not be determined when the start stop command that start and stop pump number is 1
Pump operation in packet mode all-in-one machine.Therefore, at this moment frequency converter can also send out warning information, and system can't execute current start and stop
Order prevents system operation chaotic.But it sends out the pump number that warning information reminds staff current and wrong, staff is set
The setting to pump number can be changed, according to the prompt of warning information to make system normal operation.
Step 205：Pump in slave executes operation and refers to after the operating instruction that the frequency converter in receiving host is sent
It enables.
Such as if the pump of host can meet current water supply, the operating instruction for being sent to slave may
It is that slave is allowed to remain waiting for state, slave would not start；If the pump of host cannot meet current water supply, send
Operating instruction to slave may be that the pump of slave is allowed to bring into operation, so that slave and host work together to meet currently
Water requirements then if water supply when host and slave work together has been more than current water requirements, send
It can make the pump of slave out of service to refer to the operation of slave；After slave receives operating instruction, run according to the instruction of instruction.
So that master ＆ slave control system controls water supply, better meeting current water supply needs for the common cooperation of host and slave
It asks.
Compared with prior art, it detects whether to receive by the frequency converter in host in third embodiment of the invention and open
Stop order, start stop command carries start and stop pump number；If the frequency converter in host receives start stop command, judge that start and stop pump number is
No is main pump number；If start and stop pump number is equal to host pump number, the pump in Frequency Converter Control host in host executes start and stop
Order, and send operating instruction to slave；Pump in slave is held after the operating instruction that the frequency converter in receiving host is sent
Row operating instruction.Whether it is main pump number by the start and stop pump number for judging to carry in start stop command, and then directly controls and set in advance
The pump startup for the host set controls the pump startup of slave again when needed, and the control logic of whole system is made to be more clear
It is clear.Pass through the operating status pumped in the Frequency Converter Control whole system of host so that host and slave mutual cooperation are conducive to
Meet water requirements in time, during whole service, remain that system constant pressure is constant, makes the effective work of each pump, both
Ensure user's constant pressure water supply, and saves electric energy.Due to it is each pump be all to be operated in frequency conversion state, avoid in the prior art because
The switching of work frequency conversion causes power grid larger impact, full frequency-changing control system can save considerable electric energy in the process of running,
Its economic benefit is also fairly obvious.
The step of various methods divide above, be intended merely to describe it is clear, when realization can be merged into a step or
Certain steps are split, multiple steps are decomposed into, as long as including identical logical relation, all in the protection domain of this patent
It is interior；To either adding inessential modification in algorithm in flow or introducing inessential design, but its algorithm is not changed
Core design with flow is all in the protection domain of the patent.
That is, it will be understood by those skilled in the art that implement the method for the above embodiments be can be with
Relevant hardware is instructed to complete by program, which is stored in a storage medium, including some instructions are making
It obtains an equipment (can be microcontroller, chip etc.) or processor (processor) executes side described in each embodiment of the application
The all or part of step of method.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific embodiments of the present invention,
And in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.
Claims (10)
1. a kind of Backpack type all-in-one machine master ＆ slave control system, which is characterized in that including：
The Backpack type all-in-one machine of N number of communication connection, the N are the natural number more than 1；
In the Backpack type all-in-one machine of N number of communication connection, one is host, remaining is slave；
The Backpack type all-in-one machine includes frequency converter and pump, and the frequency converter and the pump connect；
Integrated programmable logic control function in the frequency converter；
Frequency converter in the host is used for according in host and the slave described in the Programmable logical controller function control
Pump operating status.
2. Backpack type all-in-one machine master ＆ slave control system according to claim 1, which is characterized in that N number of Backpack type one
It is communicated and is connected by CAN bus between body machine.
3. Backpack type all-in-one machine master ＆ slave control system according to claim 2, the frequency converter of the host are additionally operable to examining
When measuring the CAN bus communication connection failure, controls the pump and run with lower frequency limit.
4. Backpack type all-in-one machine master ＆ slave control system according to claim 1, which is characterized in that wrapped in the frequency converter
It includes：Principal and subordinate's arbitration modules；
Principal and subordinate's arbitration modules be used for according to preset distribution mechanism distribution host in the Programmable logical controller function and
Slave.
5. Backpack type all-in-one machine master ＆ slave control system according to claim 4, which is characterized in that also wrapped in the frequency converter
It includes：Master-slave swap module, the master-slave swap module are connected with principal and subordinate's arbitration modules；
The master-slave swap module is used for when the host breaks down, and is preset according in the Programmable logical controller function
Distribution mechanism redistribute host.
6. Backpack type all-in-one machine master ＆ slave control system according to claim 4, which is characterized in that also wrapped in the frequency converter
It includes：Isobarically Control module is pumped, the pump Isobarically Control module is connected with principal and subordinate's arbitration modules；
Pressure value of the pump Isobarically Control module for the pipeline of receiving sensor feedback, and according to the pressure value of the pipeline
It is constant that the pipeline pressure of supply water is controlled with given pressure value.
7. a kind of Backpack type all-in-one machine master-slave control method, which is characterized in that be applied to Backpack type one as described in claim 1
Body owner from control system, including：
Frequency converter in host detects whether to receive start stop command, the start stop command carrying start and stop pump number；
If the frequency converter in the host receives the start stop command, judge whether the start and stop pump number is main pump
Number；
If the start and stop pump number is equal to host pump number, the pump in host described in the Frequency Converter Control in the host executes institute
Start stop command is stated, and operating instruction is sent to slave；
Pump in the slave executes the operation and refers to after the operating instruction that the frequency converter in receiving the host is sent
It enables.
8. Backpack type all-in-one machine master-slave control method according to claim 7, which is characterized in that opened described in the judgement
After whether termination of pumping number is main pump number, further include：
If the start and stop pump number is not equal to host pump number, the frequency converter of the host sends a warning message.
9. Backpack type all-in-one machine master-slave control method according to claim 7, which is characterized in that sent to slave described
Operating instruction is specially：
According to the pressure value of the pipeline and given pressure value, operating instruction is sent to the slave；
The pressure value of the pipeline is the pressure value for the sensor feedback that the frequency converter of the host receives.
10. Backpack type all-in-one machine master-slave control method according to claim 9, which is characterized in that described according to the pipe
The pressure value on road and given pressure value send operating instruction to the slave, specifically include：
The frequency converter of the host carries out PID adjustings to the deviation of the given pressure value and the pressure value of the pipeline；
According to the result that the PID is adjusted operating instruction is sent to the slave.
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| CN201711269767.4A CN108561318A (en) | 2017-12-05 | 2017-12-05 | A kind of Backpack type all-in-one machine master ＆ slave control system and method |
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| CN201711269767.4A CN108561318A (en) | 2017-12-05 | 2017-12-05 | A kind of Backpack type all-in-one machine master ＆ slave control system and method |
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| CN108561318A true CN108561318A (en) | 2018-09-21 |
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| CN201711269767.4A Pending CN108561318A (en) | 2017-12-05 | 2017-12-05 | A kind of Backpack type all-in-one machine master ＆ slave control system and method |
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| CN109991945A (en) * | 2019-04-04 | 2019-07-09 | 三一汽车制造有限公司 | Mixing plant and concrete pump combined control system |
| CN111997879A (en) * | 2020-07-24 | 2020-11-27 | 深圳市汇川技术股份有限公司 | Multi-pump water supply control method and system, water pump driver and storage medium |
| CN113464412A (en) * | 2021-07-05 | 2021-10-01 | 广州市百福电气设备有限公司 | Multi-pump parallel coordination control method and system, computer equipment and storage medium |
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Application publication date: 20180921 |