CN206299551U - Frequency conversion air compressor pressure sensor disconnection fault processing system - Google Patents
Frequency conversion air compressor pressure sensor disconnection fault processing system Download PDFInfo
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- CN206299551U CN206299551U CN201621436575.9U CN201621436575U CN206299551U CN 206299551 U CN206299551 U CN 206299551U CN 201621436575 U CN201621436575 U CN 201621436575U CN 206299551 U CN206299551 U CN 206299551U
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Abstract
The utility model discloses a kind of frequency conversion air compressor pressure sensor disconnection fault processing system,Including the sampling unit being integrated in frequency converter master board,Broken string judging unit and fault processing unit,Sampling unit is used for the voltage x 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 voltage and continuing the low setting voltages of 3S,It is judged as that pressure sensor breaks,Output fault-signal,Fault processing unit is started working after receiving fault-signal,Closing presure sensor output control pattern,Switch to output current of frequency converter control model,I.e. by PID according to pressure to current curve,Automatically adjust output current of frequency converter and frequency,Pressure needed for stabilization user,Ensure to be shut down during whole service,Pressure sensor broken string reminder alerting can be sent simultaneously.
Description
Technical field
The utility model is related to the control system technical field of frequency conversion type air compressor machine, and in particular to a kind of frequency conversion air compressor pressure
Force snesor disconnection fault processing system.
Background technology
At present, frequency conversion air compressor has been used widely in market, but client can face machine using frequency conversion air compressor
Various failures, wherein typical is exactly pressure sensor disconnection fault.
It is disorderly closedown to solve the universal processing method of above-mentioned failure both at home and abroad at present, and user notifies that producer changes pressure and passes
Sensor, turns back on after fixing a breakdown.This method by disorderly closedown come ensure supply site safety.Due to shutdown suddenly
Place comprehends and causes heavy economic losses to terminal user, also cannot win more time treatment to plant maintenance personnel.
Utility model content
The purpose of this utility model is to provide a kind of frequency conversion air compressor pressure sensor disconnection fault processing system, can be effective
The disorderly closedown for solving pressure sensor disconnection fault and causing, after breaking down, air compressor machine is not shut down, and is simultaneously emitted by alarm signal
Number, allow client and attendant to select suitable time-triggered protocol failure, make air compressor machine more humane.
The utility model solves the technical scheme that its technical problem used：
A kind of frequency conversion air compressor pressure sensor disconnection fault processing system, including be integrated in frequency converter master board
Sampling unit, broken string judging unit and fault processing unit, it is characterised in that：
Described sampling unit includes electric current read module, voltage read module, data recordin module and digital modeling mould
The input of block, the electric current read module and voltage read module is connected with the output end of frequency converter, is respectively used to read
The electric current and voltage of frequency converter output, the input of the data recordin module connects electric current read module respectively and voltage reads
The output end of module, the register for the pressure-current data of reading to be stored in frequency converter, the digital modeling module
Input connection data recordin module, for generating pressure-current curve；
Described broken string judging unit includes that the voltage detection module being sequentially connected, voltage-contrast module, timing judge mould
Block and failure output module, the voltage detection module are connected with the output end of frequency converter, for detecting that pressure sensor is exported
Voltage signal, voltage-contrast module is used for whether contrasting detection voltage signal to be less than setting voltage, and timing determination module is used for
Whether the result judgement exported according to voltage-contrast module in setting time there is pressure sensor disconnection fault；
Described fault processing unit is carried including signal receiving module, frequency transformer control module, automatic PID modules and failure
Awake module, the input of the signal receiving module is connected with the output end of the failure output module, defeated for receiving failure
Go out the pressure sensor disconnection fault signal that module sends, the input connection signal receiving module of the frequency transformer control module
Output end, output end is connected with the input of the voltage detection module and the input of automatic PID modules, disconnected for closing down
Line judging unit, and send Frequency Converter Control mode switching command, the output end of the automatic PID modules to automatic PID modules
It is connected with the input of frequency converter, after switching command is received, during for controlling frequency converter to switch to current control mode,
PID can according to pressure-current curve automatically adjust frequency conversion output circuit and frequency, the input of the failure prompting module with
The output end connection of signal receiving module, for sending alerting signal when there is pressure sensor failure, and in air compressor machine control
Failure is flashed on system screen to remind.
The beneficial effects of the utility model are：The disorderly closedown that pressure sensor disconnection fault can be effectively solved and caused,
After breaking down, air compressor machine is not shut down, and is simultaneously emitted by alarm signal, and client and attendant can select at the suitable time
Reason failure, makes air compressor machine more humane.
Brief description of the drawings
Fig. 1 is the schematic diagram of frequency conversion air compressor pressure sensor disconnection fault processing system.
The step of Fig. 2 is frequency conversion air compressor pressure sensor disconnection fault processing method block diagram.
Specific embodiment
In order that technical problem, technical scheme and beneficial effect that the utility model is solved become more apparent, below
With reference to accompanying drawing and embodiment, the utility model is further described.It should be appreciated that embodiment described herein is only used
In the utility model is explained, it is not used to limit the utility model.
As shown in figure 1, a kind of frequency conversion air compressor pressure sensor disconnection fault processing system of the utility model, including it is integrated
Sampling unit, broken string judging unit and fault processing unit in frequency converter master board.
Sampling unit includes electric current read module, voltage read module, data recordin module and digital modeling module, electric current
The input of read module and voltage read module is connected with the output end of frequency converter, is respectively used to read frequency converter output
Electric current and voltage, the input of data recordin module connect the output end of electric current read module and voltage read module respectively, use
It is stored on the register of frequency converter in by the pressure-current data of reading, the input connection data note of digital modeling module
Record module, for generating pressure-current curve.
Broken string judging unit includes the voltage detection module, voltage-contrast module, timing determination module and the event that are sequentially connected
Barrier output module, voltage detection module is connected with the output end of frequency converter, the voltage signal for detecting pressure sensor output,
Voltage-contrast module is used for whether contrasting detection voltage signal to be less than setting voltage, and timing determination module is used in setting time
Whether pressure sensor disconnection fault is occurred according to the result judgement that voltage-contrast module is exported.
Fault processing unit includes that signal receiving module, frequency transformer control module, automatic PID modules and failure remind mould
Block, the input of signal receiving module is connected with the output end of the failure output module, for receiving failure output module hair
The pressure sensor disconnection fault signal for going out, the input of frequency transformer control module connects the output end of signal receiving module, defeated
Go out end to be connected with the input of the voltage detection module and the input of automatic PID modules, for closing down broken string judging unit,
And send Frequency Converter Control mode switching command, the output end of automatic PID modules and the input of frequency converter to automatic PID modules
Connection, after switching command is received, during for controlling frequency converter to switch to current control mode, PID can be according to pressure-electric current
Curve automatically adjusts the circuit and frequency of frequency conversion output, and the input of failure prompting module connects with the output end of signal receiving module
Connect, for sending alerting signal when there is pressure sensor failure, and failure prompting is flashed on air compressor machine control flow.
As shown in Fig. 2 the utility model frequency conversion air compressor pressure sensor disconnection fault processing method is specific as follows：
1）Start air compressor machine, and wait at least 30s.Because in air compressor machine start-up course, electric motor starting loads larger, electric current
Also it is larger, there is larger difference when data in the process are with actual motion, so the data sampling in this stage should be avoided
Writing task, sampling unit should not work；
2）After starting air compressor machine 30s, data acquisition is carried out, frequency converter controller is set to FP-08=1, into data note
Record pattern, sampling unit gathers pressure-electric current of the air compressor machine in various operating modes, and the pressure that will be gathered-current data storage
Exist on the register of frequency converter；
3）After the completion of data acquisition, sampled data is set up 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, is stopped；
5）Restarting air compressor machine, broken string judging unit is exported with 0.1ms periodic pulse signals detection pressure sensor
Voltage analog, setting voltage 1V, early warning pressure sensor disconnection fault are less than when voltage signal is detected；
6）After there is early warning, broken string judging unit continues with 0.1mS cycle detection voltage analogs, if continuing to be less than for 3 seconds
1V, pressure sensor output disconnection fault signal；
7）Fault processing unit is started working after receiving fault-signal, closes broken string judging unit；
8）Fault processing unit closing presure sensor output control pattern, sends Frequency Converter Control mode switching command；
9）After automatic PID modules in fault processing unit receive instruction, control frequency converter switches to current control mould
Formula, i.e., by frequency convertor PID according to pressure-current curve, self-regulation motor output current and frequency, needed for stabilization user
General pressure, it is ensured that will not be shut down during whole service；
10）Fault processing unit sends pressure sensor broken string on machinery panel and reminds, and reminds consumer attention to locate in time
Reason failure.
The pressure sensor that personnel more renew after sale, after machine is re-powered, machine automatically resets pressure sensor control
Pattern, fault processing unit resets and is stopped state.After machine startup, broken string judging unit reopens work, and broken string is sentenced
Disconnected unit continues with 0.1mS cycle detection voltage analogs.System circulation state is again introduced into, 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, it is determined that after disconnection fault, frequency converter immediately enters disconnection fault tupe, air compressor machine is not shut down,
It is interim to maintain curstomer's site gas.By early warning, the treatment of user's contact producer is reminded, shut down for a long time to visitor after will not hindering for some reason
Bring heavy economic losses in family.Failture evacuation after more emat sensor, when analog signalses detection is normal, can automatically switch to again
Normal use pattern.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all in this practicality
Any modification, equal replacement and improvement for being made within new spirit and principle etc., all should fall in protection of the present utility model
Within the scope of.
Claims (1)
1. a kind of frequency conversion air compressor pressure sensor disconnection fault processing system, including it is integrated in adopting in frequency converter master board
Sample unit, broken string judging unit and fault processing unit, it is characterised in that：
Described sampling unit includes electric current read module, voltage read module, data recordin module and digital modeling module, institute
The input for stating electric current read module and voltage read module is connected with the output end of frequency converter, the data recordin module
Input connects the output end of electric current read module and voltage read module, the input connection of the digital modeling module respectively
Data recordin module；
Described broken string judging unit include be sequentially connected voltage detection module, voltage-contrast module, timing determination module and
Failure output module, the voltage detection module is connected with the output end of frequency converter；
Described fault processing unit includes that signal receiving module, frequency transformer control module, automatic PID modules and failure remind mould
Block, the input of the signal receiving module is connected with the output end of the failure output module, the frequency transformer control module
Input connect the output end of signal receiving module, the input and automatic PID moulds of output end and the voltage detection module
The input connection of block, the output end of the automatic PID modules is connected with the input of frequency converter, the failure prompting module
Input is connected with the output end of signal receiving module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436575.9U CN206299551U (en) | 2016-12-26 | 2016-12-26 | Frequency conversion air compressor pressure sensor disconnection fault processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621436575.9U CN206299551U (en) | 2016-12-26 | 2016-12-26 | Frequency conversion air compressor pressure sensor disconnection fault processing system |
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| Publication Number | Publication Date |
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| CN206299551U true CN206299551U (en) | 2017-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621436575.9U Active CN206299551U (en) | 2016-12-26 | 2016-12-26 | Frequency conversion air compressor pressure sensor disconnection fault processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051464A (en) * | 2020-08-25 | 2020-12-08 | 中国航空工业集团公司沈阳飞机设计研究所 | Fault detection method and system for dual-channel airborne pressure sensor |
-
2016
- 2016-12-26 CN CN201621436575.9U patent/CN206299551U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112051464A (en) * | 2020-08-25 | 2020-12-08 | 中国航空工业集团公司沈阳飞机设计研究所 | Fault detection method and system for dual-channel airborne pressure sensor |
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