CN106523340B - Frequency conversion air compressor pressure sensor disconnection fault processing system and method - Google Patents
Frequency conversion air compressor pressure sensor disconnection fault processing system and method Download PDFInfo
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- CN106523340B CN106523340B CN201611218620.8A CN201611218620A CN106523340B CN 106523340 B CN106523340 B CN 106523340B CN 201611218620 A CN201611218620 A CN 201611218620A CN 106523340 B CN106523340 B CN 106523340B
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- frequency converter
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Classifications
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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
-
- 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
- F04B49/10—Other safety measures
-
- 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
- F04B51/00—Testing machines, pumps, or pumping installations
-
- 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
- F04B2207/00—External parameters
- F04B2207/70—Warnings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Abstract
The invention discloses a kind of frequency conversion air compressor pressure sensor disconnection fault disposal system and methods, its system includes the sampling unit being integrated in frequency converter master board, break judging unit and fault processing unit, sampling unit is used for the voltage-to-current analog quantity of sampling frequency converter output end, sampled data is stored on register, and automatically generate voltage-current curve, broken string judging unit is used to detect the voltage signal of pressure sensor output, when detecting that voltage continues the low setting voltage of 3S, it is judged as that pressure sensor breaks, export fault-signal, fault processing unit is started to work after receiving fault-signal, it closes pressure sensor and exports control model, it is switched to output current of frequency converter control model, i.e. by PID according to pressure-current curve, automatically adjust output current of frequency converter and frequency, stablize user institute The pressure needed guarantees to shut down during whole service, while can issue pressure sensor broken string reminder alerting.
Description
Technical field
The present invention relates to the control system technical fields of frequency conversion type air compressor machine, and in particular to a kind of frequency conversion air compressor pressure biography
Sensor disconnection fault processing system and method.
Background technique
Currently, frequency conversion air compressor is very extensive in market use, but client can face machine using frequency conversion air compressor
Various failures, wherein being exactly typically pressure sensor disconnection fault.
Solving the universal processing method of above-mentioned failure both at home and abroad at present is disorderly closedown, and user notifies producer that replacement pressure passes
Sensor turns back on after debugging.This method by disorderly closedown come ensure supply site safety.Due to shutting down suddenly
Processing can cause heavy economic losses to terminal user, and more time processing can not be also won to plant maintenance personnel.
Summary of the invention
The object of the present invention is to provide a kind of frequency conversion air compressor pressure sensor disconnection fault processing system and methods, can have
Effect solve pressure sensor disconnection fault and caused by disorderly closedown, after breaking down, air compressor machine is not shut down, and is simultaneously emitted by alarm
Signal allows client and maintenance personnel that can select suitable time-triggered protocol failure, keeps air compressor machine more humane.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of frequency conversion air compressor pressure sensor disconnection fault processing system, including being integrated in frequency converter master board
Sampling unit, broken string judging unit and fault processing unit, it is characterised in that:
The sampling unit includes electric current read module, voltage read module, data recordin module and digital modeling mould
The input terminal of block, the electric current read module and voltage read module is connect with the output end of frequency converter, is respectively used to read
The electric current and voltage of frequency converter output, the input terminal of the data recordin module is separately connected electric current read module and voltage is read
The output end of module is stored in the register of frequency converter, the digital modeling module for pressure-current data by reading
Input terminal connect data recordin module, for generating pressure-current curve；
The broken string judging unit includes sequentially connected voltage detection module, voltage-contrast module, timing judgement mould
The output end of block and failure output module, the voltage detection module and frequency converter connects, for detecting pressure sensor output
Voltage signal, whether voltage-contrast module be less than setting voltage for contrasting detection voltage signal, and timing determination module is used for
Whether pressure sensor disconnection fault is occurred according to the result judgement that voltage-contrast module exports within the set time；
The fault processing unit includes that signal receiving module, frequency transformer control module, automatic PID module and failure mention
Awake module, the input terminal of the signal receiving module is connect with the output end of the failure output module, defeated for receiving failure
The pressure sensor disconnection fault signal that module issues out, the input terminal connection signal receiving module of the frequency transformer control module
Output end, output end is connect with the input terminal of the input terminal of the voltage detection module and automatic PID module, disconnected for shutting down
Line judging unit, and Frequency Converter Control mode switching command, the output end of the automatic PID module are issued to automatic PID module
It is connect with the input terminal of frequency converter, after receiving switching command, when being switched to current control mode for controlling frequency converter,
PID can according to the electric current and frequency of pressure-current curve automatic adjustment frequency conversion output, the input terminal of the failure reminding module with
The output end of signal receiving module connects, for issuing alerting signal when there is pressure sensor failure, and in air compressor machine control
Flashing failure is reminded on system screen.
A kind of frequency conversion air compressor pressure sensor disconnection fault processing method, which is characterized in that the method includes:
1) start air compressor machine, and wait at least 30s；
2) after starting air compressor machine 30s, data acquisition is carried out, FP-08=1 is set by frequency converter controller, into data
Logging mode, sampling unit acquire pressure-electric current of the air compressor machine in various operating conditions, and by pressure-current data collected
It is stored on the register of frequency converter；
3) after the completion of data acquisition, sampled data is established pressure-current curve by the digital modeling module in sampling unit；
4) frequency converter controller is manually set to FP-08=0, and sampling unit exits data recording mode, stops working；
5) air compressor machine, the voltage analog of broken string judging unit detection pressure sensor output, when detecting are restarted
Voltage signal is lower than setting voltage, early warning pressure sensor disconnection fault；
6) after there is early warning, broken string judging unit continues to test voltage analog, defeated if for 3 seconds lower than setting voltage
Pressure sensor disconnection fault signal out；
7) fault processing unit is started to work after receiving fault-signal, closes broken string judging unit；
8) fault processing unit closes pressure sensor and exports control model, issues Frequency Converter Control mode switching command；
9) after the automatic PID module in fault processing unit receives instruction, control frequency converter is switched to current control mould
Formula automatically adjusts motor output electric current and frequency according to pressure-current curve by frequency convertor PID, stablizes pressure needed for user
Power guarantees to shut down during whole service；
10) fault processing unit issues pressure sensor broken string on machinery panel and reminds, and call user's attention is located in time
Manage failure.
The beneficial effects of the present invention are: can effectively solve pressure sensor disconnection fault and caused by disorderly closedown, occur
After failure, air compressor machine is not shut down, and is simultaneously emitted by alarm signal, allows client and maintenance personnel that can select suitable time-triggered protocol event
Barrier, keeps air compressor machine more humane.
Detailed description of the invention
Fig. 1 is the schematic diagram of frequency conversion air compressor pressure sensor disconnection fault processing system.
Fig. 2 is the step block diagram of frequency conversion air compressor pressure sensor disconnection fault processing method.
Specific embodiment
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Attached drawing and embodiment, the present invention is further illustrated.It should be appreciated that embodiment described herein is used only for explaining this
Invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of frequency conversion air compressor pressure sensor disconnection fault processing system of the present invention, including it is integrated in change
Sampling unit, broken string judging unit and fault processing unit in frequency device master board.
Sampling unit includes electric current read module, voltage read module, data recordin module and digital modeling module, electric current
The input terminal of read module and voltage read module is connect with the output end of frequency converter, is respectively used to read frequency converter output
Electric current and voltage, the input terminal of data recordin module are separately connected the output end of electric current read module and voltage read module, use
In on the register that pressure-current data of reading is stored in frequency converter, the input terminal connection data of digital modeling module are remembered
Module is recorded, for generating pressure-current curve.
Broken string judging unit includes sequentially connected voltage detection module, voltage-contrast module, timing determination module and event
The output end of barrier output module, voltage detection module and frequency converter connects, for detecting the voltage signal of pressure sensor output,
Whether voltage-contrast module is less than setting voltage for contrasting detection voltage signal, and timing determination module is within the set time
Whether there is pressure sensor disconnection fault according to the result judgement that voltage-contrast module exports.
Fault processing unit includes that signal receiving module, frequency transformer control module, automatic PID module and failure remind mould
Block, the input terminal of signal receiving module are connect with the output end of the failure output module, for receiving failure output module hair
Pressure sensor disconnection fault signal out, the output end of the input terminal connection signal receiving module of frequency transformer control module are defeated
Outlet is connect with the input terminal of the input terminal of the voltage detection module and automatic PID module, for shutting down broken string judging unit,
And Frequency Converter Control mode switching command, the output end of automatic PID module and the input terminal of frequency converter are issued to automatic PID module
Connection, after receiving switching command, when being switched to current control mode for controlling frequency converter, PID can be according to pressure-electric current
Curve automatically adjusts the electric current and frequency of frequency conversion output, and the input terminal of failure reminding module and the output end of signal receiving module connect
It connects, for issuing alerting signal when there is pressure sensor failure, and flashes failure on air compressor machine control flow and remind.
As shown in Fig. 2, frequency conversion air compressor pressure sensor disconnection fault processing method of the present invention is specific as follows:
1) start air compressor machine, and wait at least 30s.Since in air compressor machine start-up course, electric motor starting loads larger, electric current
Also larger, data in the process are with there is biggish difference when actual motion, so the data sampling in this stage should be avoided
Work is recorded, sampling unit should not work.
2) after starting air compressor machine 30s, data acquisition is carried out, FP-08=1 is set by frequency converter controller, into data
Logging mode, sampling unit acquire pressure-electric current of the air compressor machine in various operating conditions, and by pressure-current data collected
It is stored on the register of frequency converter.
3) after the completion of data acquisition, sampled data is established pressure-current curve by the digital modeling module in sampling unit.
4) frequency converter controller is manually set to FP-08=0, and sampling unit exits data recording mode, stops working.
5) air compressor machine is restarted, the judging unit that breaks is with the detection pressure sensor output of 0.1ms periodic pulse signal
Voltage analog sets voltage 1V, early warning pressure sensor disconnection fault when detecting that voltage signal is lower than.
6) after there is early warning, broken string judging unit continues with 0.1mS cycle detection voltage analog, if for 3 seconds be lower than
1V, pressure sensor output disconnection fault signal.
7) fault processing unit is started to work after receiving fault-signal, closes broken string judging unit；
8) fault processing unit closes pressure sensor and exports control model, issues Frequency Converter Control mode switching command；
9) after the automatic PID module in fault processing unit receives instruction, control frequency converter is switched to current control mould
Formula is automatically adjusted motor output electric current and frequency, stablized needed for user by frequency convertor PID according to pressure-current curve
General pressure guarantees to shut down during whole service.
10) fault processing unit issues pressure sensor broken string on machinery panel and reminds, and consumer attention is reminded to locate in time
Manage failure.
The pressure sensor that after-sales staff more renews, after machine re-powers, machine automatically resets pressure sensor control
Mode, fault processing unit reset stop working state.After machine startup, broken string judging unit reopens work, and broken string is sentenced
Disconnected unit continues with 0.1mS cycle detection voltage analog.It is again introduced into system circulation state, system enters periodic duty shape
State.
Frequency conversion air compressor pressure sensor disconnection fault processing system once detects the voltage-mode of pressure sensor output
When analog quantity occurs abnormal, after determining disconnection fault, frequency converter immediately enters disconnection fault tupe, and air compressor machine is not shut down,
It is interim to maintain curstomer's site gas.By early warning, user is reminded to contact producer's processing, it will not be because being shut down for a long time after failure to visitor
Bring heavy economic losses in family.Troubleshooting after more emat sensor when analog signals detection is normal, and can automatically switch to
Normal use mode.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements and improvements within principle, should all fall within the scope and spirit of the invention.
Claims (2)
1. a kind of frequency conversion air compressor pressure sensor disconnection fault processing system, including being integrated in adopting in frequency converter master board
Sample unit, broken string judging unit and fault processing unit, it is characterised in that:
The sampling unit includes electric current read module, voltage read module, data recordin module and digital modeling module, institute
The input terminal for stating electric current read module and voltage read module is connect with the output end of frequency converter, is respectively used to read frequency converter
The electric current and voltage of output, the input terminal of the data recordin module are separately connected electric current read module and voltage read module
Output end is stored in the register of frequency converter, the input of the digital modeling module for pressure-current data by reading
End connection data recordin module, for generating pressure-current curve；
The broken string judging unit include sequentially connected voltage detection module, voltage-contrast module, timing determination module and
The output end of failure output module, the voltage detection module and frequency converter connects, for detecting the electricity of pressure sensor output
Signal is pressed, whether voltage-contrast module is less than setting voltage for contrasting detection voltage signal, and timing determination module is for setting
Whether the interior result judgement according to the output of voltage-contrast module of fixing time there is pressure sensor disconnection fault；
The fault processing unit includes that signal receiving module, frequency transformer control module, automatic PID module and failure remind mould
Block, the input terminal of the signal receiving module are connect with the output end of the failure output module, for receiving failure output mould
Block issue pressure sensor disconnection fault signal, the input terminal connection signal receiving module of the frequency transformer control module it is defeated
Outlet, output end connect with the input terminal of the input terminal of the voltage detection module and automatic PID module, sentence for shutting down broken string
Disconnected unit, and Frequency Converter Control mode switching command, the output end of the automatic PID module and change are issued to automatic PID module
The input terminal of frequency device connects, after receiving switching command, when being switched to current control mode for controlling frequency converter, and PID meeting
According to pressure-current curve automatic adjustment frequency conversion output electric current and frequency, the input terminal and signal of the failure reminding module
The output end of receiving module connects, for issuing alerting signal when there is pressure sensor failure, and in air compressor machine control flow
Upper flashing failure is reminded.
2. a kind of frequency conversion air compressor pressure sensor disconnection fault processing method, which is characterized in that the method includes:
1) start air compressor machine, and wait at least 30s；
2) after starting air compressor machine 30s, data acquisition is carried out, FP-08=1 is set by frequency converter controller, into data record
Mode, sampling unit acquires pressure-electric current of the air compressor machine in various operating conditions, and pressure collected-current data is stored
On the register of frequency converter；
3) after the completion of data acquisition, sampled data is established pressure-current curve by the digital modeling module in sampling unit；
4) frequency converter controller is manually set to FP-08=0, and sampling unit exits data recording mode, stops working；
5) air compressor machine, the voltage analog of broken string judging unit detection pressure sensor output, when detecting voltage are restarted
Signal is lower than setting voltage, early warning pressure sensor disconnection fault；
6) after there is early warning, broken string judging unit continues to test voltage analog, if for 3 seconds lower than setting voltage, output pressure
Force snesor disconnection fault signal；
7) fault processing unit is started to work after receiving fault-signal, closes broken string judging unit；
8) fault processing unit closes pressure sensor and exports control model, issues Frequency Converter Control mode switching command；
9) after the automatic PID module in fault processing unit receives instruction, control frequency converter is switched to current control mode, i.e.,
By frequency convertor PID according to pressure-current curve, motor output electric current and frequency are automatically adjusted, pressure needed for stablizing user is protected
It will not be shut down during card whole service；
10) fault processing unit issues pressure sensor broken string on machinery panel and reminds, and call user's attention handles event in time
Barrier.
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| CN201611218620.8A CN106523340B (en) | 2016-12-26 | 2016-12-26 | Frequency conversion air compressor pressure sensor disconnection fault processing system and method |
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| CN106523340B true CN106523340B (en) | 2019-10-08 |
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| CN109823177B (en) * | 2017-11-22 | 2022-04-05 | 湖南中车时代电动汽车股份有限公司 | Protection device and method for electric automobile |
| CN110275553A (en) * | 2019-04-24 | 2019-09-24 | 四川中鼎智能技术有限公司 | Diagnosis control method, system, storage medium and terminal based on air compressor air storage tank pressure data process |
| CN111181471A (en) * | 2020-01-17 | 2020-05-19 | 深圳市英威腾电气股份有限公司 | Multi-frequency converter equipment and master-slave control system and method of frequency converter of multi-frequency converter equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5179981A (en) * | 1988-05-25 | 1993-01-19 | Eaton Corporation | Fault detection method for central tire inflation system |
| CN203285657U (en) * | 2013-04-24 | 2013-11-13 | 广东石油化工学院 | Combined type compressor composite fault diagnosing and testing device |
| CN203348055U (en) * | 2013-07-09 | 2013-12-18 | 商讯集团有限公司 | Air compressor frequency conversion control system of |
| CN204140356U (en) * | 2014-09-30 | 2015-02-04 | 银川华盛新科技术有限公司 | A kind of mine air compressor control system based on PLC |
| CN205136018U (en) * | 2015-11-11 | 2016-04-06 | 河源旗滨硅业有限公司 | Air compressor economizer system based on PID frequency conversion |
| CN105486969A (en) * | 2016-01-18 | 2016-04-13 | 广州视源电子科技股份有限公司 | Compressor reverse connection fault detection method, protection method and device |
| CN205714773U (en) * | 2016-06-08 | 2016-11-23 | 大连民族大学 | A kind of helical-lobe compressor condition monitoring and failure diagnosis system |
-
2016
- 2016-12-26 CN CN201611218620.8A patent/CN106523340B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5179981A (en) * | 1988-05-25 | 1993-01-19 | Eaton Corporation | Fault detection method for central tire inflation system |
| CN203285657U (en) * | 2013-04-24 | 2013-11-13 | 广东石油化工学院 | Combined type compressor composite fault diagnosing and testing device |
| CN203348055U (en) * | 2013-07-09 | 2013-12-18 | 商讯集团有限公司 | Air compressor frequency conversion control system of |
| CN204140356U (en) * | 2014-09-30 | 2015-02-04 | 银川华盛新科技术有限公司 | A kind of mine air compressor control system based on PLC |
| CN205136018U (en) * | 2015-11-11 | 2016-04-06 | 河源旗滨硅业有限公司 | Air compressor economizer system based on PID frequency conversion |
| CN105486969A (en) * | 2016-01-18 | 2016-04-13 | 广州视源电子科技股份有限公司 | Compressor reverse connection fault detection method, protection method and device |
| CN205714773U (en) * | 2016-06-08 | 2016-11-23 | 大连民族大学 | A kind of helical-lobe compressor condition monitoring and failure diagnosis system |
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