CN106094792A - Fault self-diagnosis method and device for sewage disposal system - Google Patents

Fault self-diagnosis method and device for sewage disposal system Download PDF

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Publication number
CN106094792A
CN106094792A CN201610439480.0A CN201610439480A CN106094792A CN 106094792 A CN106094792 A CN 106094792A CN 201610439480 A CN201610439480 A CN 201610439480A CN 106094792 A CN106094792 A CN 106094792A
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China
Prior art keywords
sewage disposal
signal
fault
processing unit
central processing
Prior art date
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Pending
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CN201610439480.0A
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Chinese (zh)
Inventor
傅磊
邓俊平
刘阳
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Changsha Wei Baote Environmental Protection Science And Technology Co Ltd
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Changsha Wei Baote Environmental Protection Science And Technology Co Ltd
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Priority to CN201610439480.0A priority Critical patent/CN106094792A/en
Publication of CN106094792A publication Critical patent/CN106094792A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00Testing or monitoring of control systems or parts thereof
    • G05B23/02Electric testing or monitoring
    • G05B23/0205Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0208Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
    • G05B23/0213Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00Program-control systems
    • G05B2219/20Pc systems
    • G05B2219/24Pc safety
    • G05B2219/24065Real time diagnostics

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Processing Of Solid Wastes (AREA)
  • Testing And Monitoring For Control Systems (AREA)

Abstract

The invention discloses a kind of fault self-diagnosis method for sewage disposal system and device, the method comprising the steps of: the industrial computer of sewage disposal website controls central processing unit and gathers corresponding sensor signal, contrast with standard signal, when sensor signal is more than 20mA, when exceeding delay threshold less than the difference of 4mA or two signals more than 4mA and persistent period, it is judged as sensor abnormality, central processing unit performs failed operation to sewage disposal website, and send abnormal signal by industrial computer to server, server performs the storage of fault message according to abnormal signal, display and or alarm.This device includes server, the industrial computer being arranged in sewage disposal website, fault self-diagnosis module and sensor, and fault self-diagnosis module includes central processing unit.The present invention quickly can carry out fault self-diagnosis function module to long distance control system, reduces the number of times of maintenance of equipment, thus reduces librarian use cost.

Description

Fault self-diagnosis method and device for sewage disposal system
Technical field
The present invention relates to sewage treatment area, particularly relate to a kind of fault self-diagnosis method for sewage disposal system and Device.
Background technology
Along with sewage disposal website increases, the equipment of these websites is supervised the more and more important of change.
Prior art is to use wired mode to set up computer remote monitoring system, can be to remote sewage by computer Treating stations device data carries out monitoring and record, during long distance control system work, inputs various to sewage disposal electric-control system, defeated Go out signal to be monitored, and application program makes inferences, judges, result is fed back to rapidly master control system, change controlled state.
But owing to website is many, have a very wide distribution, some website is distributed remoter, using wired mode to realize, hardware is real Ready-made than high and quantities is bigger;And owing to sewage treatment plant's device category is many, work under bad environment, device fails machine Rate is big, has influence on the normal production of sewage treatment plant, also can cause environmental pollution accident time serious.
Therefore, it is necessary to there is the reason of the rapid failure judgement of method, just can ensure safety in production.Long distance control system possesses event Barrier self-diagnostic function is the most particularly important, and realize this function be accomplished by a kind of module with fault self-diagnosis function.
Summary of the invention
Present invention aim to overcome that the deficiency and defect mentioned in background above technology, it is provided that one can be quickly to remotely Monitoring system carries out fault self-diagnosis function module, reduces the number of times of maintenance of equipment, thus reduces librarian use cost, shortens Fault discovery cycle and the fault self-diagnosis method for sewage disposal system of maintenance cycle and device.
For achieving the above object, the invention provides a kind of fault self-diagnosis method for sewage disposal system, including Following steps:
The industrial computer of sewage disposal website controls central processing unit and gathers corresponding sensor signal, contrasts with standard signal, when Sensor signal more than 20mA, exceed delay threshold less than the difference of 4mA or two signals more than 4mA and persistent period time, it is judged that for Sensor abnormality, central processing unit performs failed operation, and sends to server abnormal by industrial computer sewage disposal website Signal, server according to abnormal signal perform the storage of fault message, display and or alarm.
Further improvements in methods as the present invention:
Central processing unit judges sewage disposal website is performed failed operation, comprises the following steps: central processing unit is by abnormal letter Number output to fault display circuit, fault display circuit i.e. control light emitting diode matrix display device flicker, point out fault.
Central processing unit judges sewage disposal website is performed failed operation, further comprising the steps of: central processing unit will Abnormal signal exports to relay switch control circuit, and relay switch control circuit output switching signal, by external guarantor Protection circuit or warning circuit perform protection act and close water treatment facilities.
Delay threshold is 30s.
Central processing unit sends abnormal signal by industrial computer to server, be by wireless network or current signal, The common communication protocol such as voltage signal, 485 communication serial ports send.
As total technology design, present invention also offers a kind of fault self-diagnosis for sewage disposal system and fill Put, industrial computer, fault self-diagnosis module and sensor, the fault self-diagnosis including server, being arranged in sewage disposal website Module includes central processing unit, and industrial computer controls central processing unit and gathers corresponding sensor signal, with the mark from server Calibration signal contrasts, when sensor signal is more than 20mA, exceedes time delay less than the difference of 4mA or two signals more than 4mA and persistent period During threshold value, it is judged that for sensor abnormality, central processing unit performs failed operation to sewage disposal website, and by wireless to service Device send abnormal signal, server according to abnormal signal perform the storage of fault message, display and or alarm.
Further improvement as assembly of the invention:
Fault self-diagnosis module, also includes collecting sensor signal circuit, sensor control circuit and fault self-diagnosis output, passes The sensor signal collected is inputted to central processing unit by sensor signal Acquisition Circuit, exports after central processing unit processes To sensor control circuit, being connected to fault self-diagnosis output through sensor control circuit, fault self-diagnosis exports at sensor Sent to server by current signal, voltage signal, 485 communication serial ports or radio communication time abnormal.
Fault self-diagnosis module, also includes fault display circuit, and when sensor abnormality, central processing unit is by abnormal signal Output is to fault display circuit, and fault display circuit i.e. controls the display device flicker of light emitting diode matrix, points out fault.
Fault self-diagnosis module, also includes relay switch control circuit, and when sensor abnormality, central processing unit is by different Regular signal exports to relay switch control circuit, and relay switch control circuit output switching signal, by external protection Circuit or warning circuit perform protection act and close water treatment facilities.
Fault self-diagnosis module also includes that+5v voltage-stabilized power supply circuit ,+5v voltage-stabilized power supply circuit are that central processing unit is powered.
The method have the advantages that
1, sent to the fault self-diagnosis module (central processing unit) being arranged at sewage disposal website by server (host computer) Instruction, the signal failure judgement position that server is returned by module, prompting maintainer keeps in repair the most targetedly Work, with the purpose of the maintenance cost that reaches to fix a breakdown rapidly, reduce.
2, quickly long distance control system can be carried out fault self-diagnosis function module, reduce the number of times of maintenance of equipment, thus Reduce librarian use cost;Shorten fault discovery cycle and maintenance cycle, (the most manually reach the spot and need a few hours, The most only need just can complete for about 10 minutes the upgrading of troubleshooting detection and software section), such that it is able to make sewage disposal system Safeguarded in time, Remote configuration, remote upgrade and the function such as restart, thus be ensure that sewage disposal system normal table is raw Produce.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages. Below with reference to accompanying drawings, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing a further understanding of the present invention, and the present invention's is schematic real Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic flow sheet of the fault self-diagnosis method for sewage disposal system of the preferred embodiment of the present invention;
Fig. 2 is the structural representation of the failure self-diagnosis device for sewage disposal system of the preferred embodiment of the present invention;
Fig. 3 is the industrial computer network connection diagram with server of the preferred embodiment of the present invention;
Fig. 4 is the structural representation of the fault self-diagnosis module of the preferred embodiment of the present invention;
Fig. 5 is the sensor connection diagram of the fault self-diagnosis module of the preferred embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims Implement with the multitude of different ways covered.
Embodiment 1:
See Fig. 1, the fault self-diagnosis method for sewage disposal system of the present embodiment, comprise the following steps:
The industrial computer of sewage disposal website controls the central processing unit of fault self-diagnosis module and gathers corresponding sensor signal, with The standard signal analog signals of a standard (the remote server operating trouble self diagnosis module send) contrast, when sensor is believed Number more than 20mA, exceed delay threshold (30s) less than the difference of 4mA or two signals more than 4mA and persistent period time, it is judged that for sensing Device is abnormal, and central processing unit performs failed operation to sewage disposal website, and sends abnormal signal by industrial computer to server, Server according to abnormal signal perform the storage of fault message, display and or alarm.By server (host computer) to being arranged at The fault self-diagnosis module (central processing unit) of sewage disposal website sends instruction, and the signal that server is returned by module judges Trouble location, prompting maintainer carries out maintenance work targetedly, at once to reach to fix a breakdown rapidly, reduce and keep in repair into This purpose.
In the present embodiment, central processing unit judges sewage disposal website is performed failed operation, comprises the following steps: central authorities Abnormal signal is exported to fault display circuit by processor, and fault display circuit i.e. controls the display device of light emitting diode matrix Flicker, points out fault;Abnormal signal is exported to relay switch control circuit, relay switch control circuit by central processing unit Output switching signal, performs protection act by external protection circuit or warning circuit and closes water treatment facilities.
In the present embodiment, by with sensor acquisition to signal contrast, position fault, central processing unit is according to different Regular data channel number, and Exception Type, such as go up overproof, under overproof, broken string (when the sensor signal collected is continuously zero Time, can determine whether that sensor breaks), unusual fluctuations are (when the sensor signal collected is less than 4mA or more than 20mA for abnormal letter Number), abnormal steadily (when the sensor signal collected long lasting for constant or fluctuation less than ± 2% time also can determine whether that signal is different Often) etc., self-defined failure code, user is according to the concrete trouble point of code analysis of prompting.Central processing unit by industrial computer to Server sends abnormal signal, is by all purpose communications such as wireless network or current signal, voltage signal, 485 communication serial ports Agreement sends.When sending abnormal signal to server, sending the numbering of sewage disposal point, server can quickly determine simultaneously With record this numbering.
Embodiment 2:
Corresponding with embodiment, see Fig. 2, Fig. 3, Fig. 4, Fig. 5, the fault self-diagnosis for sewage disposal system of the present embodiment fills Put, industrial computer, fault self-diagnosis module and sensor, the fault self-diagnosis including server, being arranged in sewage disposal website Module includes the output of central processing unit, collecting sensor signal circuit, sensor control circuit, fault self-diagnosis, malfunction coefficient Circuit and relay switch control circuit, industrial computer controls central processing unit and gathers corresponding sensor signal, and from service The standard signal contrast of device, the sensor signal theory range of normal value of central processor CPU is 4mA ~ 20mA, when sensor is believed The sensor signal of number Acquisition Circuit collection more than 20mA, exceed more than 4mA and persistent period less than the difference of 4mA or two signals and prolong Time threshold value time, it is judged that for sensor abnormality, central processing unit performs failed operation to sewage disposal website, and by wireless to clothes Business device send abnormal signal, server according to abnormal signal perform the storage of fault message, display and or alarm.
In the present embodiment, the sensor signal collected is inputted to central processing unit by collecting sensor signal circuit, Export after central processing unit processes to sensor control circuit, be connected to fault self-diagnosis output through sensor control circuit, Fault self-diagnosis output is sent extremely by current signal, voltage signal, 485 communication serial ports or radio communication when sensor abnormality Server.
In the present embodiment, when sensor abnormality, abnormal signal is exported to fault display circuit, fault by central processing unit Display circuit i.e. controls the display device flicker of light emitting diode matrix, by the classification encoding malfunction coefficient, is accurately positioned The sensor that fault occurs, points out fault.Abnormal signal is also exported to relay switch control circuit, relay by central processing unit Device ON-OFF control circuit output switching signal, performs protection act by external protection circuit or warning circuit and closes water process Equipment.
In the present embodiment, fault self-diagnosis module also includes that+5v voltage-stabilized power supply circuit ,+5v voltage-stabilized power supply circuit are central authorities Processor is powered.Collecting sensor signal circuit includes anti-jamming circuit.Fault self-diagnosis module also can install lightning-protection module additional.
Fault self-diagnosis module is provided with encryption authorization, real by realizing sewage disposal long distance control system after authorizing Existing fault self-diagnosis function, it is to avoid site operation personnel's maloperation, produces fault.Authoring system support is up to six grades of operators Rank is to allow from operator, system maintenance personnel to the business equipment manager operation to system different rights.Each equipment Restriction is all had permission during operation, in case the malfunction of non-operator.Fault self-diagnosis module carries out rational cloth at hardware aspect Line and corresponding filtering, the measure such as anti-interference reduce the generation of fault;By using watchdog technique, fault-toleranr technique on software With the problem such as " race flies " and " endless loop " arranged when the processing routine such as software trap is run.
Fault self-diagnosis module can realize remote failure autodiagnosis by GRPS, CDMA, Internet multiple communication modes Function.Utilize wireless communication components to pass through public network to communicate with DTU, it is achieved thereby that to on-the-spot Control & data acquisition.
Seeing Fig. 5, the sensor that sewage disposal system field relates to mainly has: on the markets such as PH, DO, MLSS, COD, BOD Existing complete sets of products, outsourcing.Controlled to be switched to sensor or standard signal by central processing unit during use.Standard signal Being produced by reference signal generator, sensor and reference signal generator are the standard industry mould of 0-10V, 0-5V, 4-20mA Intend signal, use the multichannel analog amount acquisition module of outsourcing, inside it, be automatically performed AD conversion.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, that is made any repaiies Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (10)

1. the fault self-diagnosis method for sewage disposal system, it is characterised in that comprise the following steps:
The industrial computer of sewage disposal website controls central processing unit and gathers corresponding sensor signal, contrasts with standard signal, when Described sensor signal more than 20mA, exceed delay threshold less than the difference of 4mA or two signals more than 4mA and persistent period time, sentence Breaking as sensor abnormality, central processing unit performs failed operation to sewage disposal website, and is sent to server by industrial computer Abnormal signal, server according to described abnormal signal perform the storage of fault message, display and or alarm.
Fault self-diagnosis method for sewage disposal system the most according to claim 1, it is characterised in that described central authorities Processor judges sewage disposal website is performed failed operation, comprises the following steps: abnormal signal is exported extremely by central processing unit Fault display circuit, fault display circuit i.e. controls the display device flicker of light emitting diode matrix, points out fault.
Fault self-diagnosis method for sewage disposal system the most according to claim 1 and 2, it is characterised in that described Central processing unit judges sewage disposal website is performed failed operation, further comprising the steps of: central processing unit is by abnormal signal Export to relay switch control circuit, relay switch control circuit output switching signal, by external protection circuit or Warning circuit performs protection act and closes water treatment facilities.
Fault self-diagnosis method for sewage disposal system the most according to claim 1 and 2, it is characterised in that described Delay threshold is 30s.
Fault self-diagnosis method for sewage disposal system the most according to claim 1 and 2, it is characterised in that described Central processing unit sends abnormal signal by industrial computer to server, be by wireless network or current signal, voltage signal, The common communication protocol such as 485 communication serial ports send.
6. the failure self-diagnosis device for sewage disposal system, it is characterised in that include server, be arranged at sewage Industrial computer, fault self-diagnosis module and sensor in reason website, described fault self-diagnosis module includes central processing unit, described Industrial computer controls central processing unit and gathers corresponding sensor signal, contrasts, when described biography with the standard signal from server Sensor signal more than 20mA, exceed delay threshold less than the difference of 4mA or two signals more than 4mA and persistent period time, it is judged that for pass Sensor is abnormal, and central processing unit performs failed operation to sewage disposal website, and sends abnormal signal by wireless to server, Server according to described abnormal signal perform the storage of fault message, display and or alarm.
Failure self-diagnosis device for sewage disposal system the most according to claim 6, it is characterised in that described fault Self diagnosis module, also includes collecting sensor signal circuit, sensor control circuit and fault self-diagnosis output, described sensor The sensor signal collected is inputted to central processing unit by signal acquisition circuit, and after central processing unit processes, output is to passing Sensor control circuit, is connected to fault self-diagnosis output through sensor control circuit, and fault self-diagnosis exports at sensor abnormality Time sent to server by current signal, voltage signal, 485 communication serial ports or radio communication.
Failure self-diagnosis device for sewage disposal system the most according to claim 7, it is characterised in that described fault Self diagnosis module, also includes fault display circuit, and when sensor abnormality, abnormal signal output is shown by central processing unit to fault Showing circuit, fault display circuit i.e. controls the display device flicker of light emitting diode matrix, points out fault.
Failure self-diagnosis device for sewage disposal system the most according to claim 7, it is characterised in that described fault Self diagnosis module, also includes relay switch control circuit, and when sensor abnormality, abnormal signal is exported extremely by central processing unit Relay switch control circuit, relay switch control circuit output switching signal, by external protection circuit or electricity of reporting to the police Road performs protection act and closes water treatment facilities.
Failure self-diagnosis device for sewage disposal system the most according to claim 6, it is characterised in that described event Barrier self diagnosis module also includes that+5v voltage-stabilized power supply circuit, described+5v voltage-stabilized power supply circuit are that central processing unit is powered.
CN201610439480.0A 2016-06-20 2016-06-20 Fault self-diagnosis method and device for sewage disposal system Pending CN106094792A (en)

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CN108228716A (en) * 2017-12-05 2018-06-29 华南理工大学 SMOTE_Bagging integrated sewage handling failure diagnostic methods based on weighting extreme learning machine
CN109866784A (en) * 2017-12-01 2019-06-11 比亚迪股份有限公司 Channel self-checking unit and method, storage medium, train and its pull-in control system
CN110954348A (en) * 2019-11-22 2020-04-03 东莞理工学院 Factory sewage treatment fault diagnosis device
CN111196227A (en) * 2018-11-19 2020-05-26 宝沃汽车(中国)有限公司 Sensor signal monitoring method and device and vehicle
CN114184953A (en) * 2021-12-20 2022-03-15 联合汽车电子有限公司 Method and system for diagnosing abnormality of relay drive circuit
CN114911209A (en) * 2022-07-18 2022-08-16 巨野恒丰果蔬有限公司 Garlic processing wastewater treatment management system based on data analysis
CN116678653A (en) * 2023-05-26 2023-09-01 长江生态环保集团有限公司 Sewage treatment system abnormality diagnosis method based on sensor self-detection

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109866784A (en) * 2017-12-01 2019-06-11 比亚迪股份有限公司 Channel self-checking unit and method, storage medium, train and its pull-in control system
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CN108228716B (en) * 2017-12-05 2020-01-14 华南理工大学 SMOTE _ Bagging integrated sewage treatment fault diagnosis method based on weighted extreme learning machine
CN111196227A (en) * 2018-11-19 2020-05-26 宝沃汽车(中国)有限公司 Sensor signal monitoring method and device and vehicle
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CN114184953A (en) * 2021-12-20 2022-03-15 联合汽车电子有限公司 Method and system for diagnosing abnormality of relay drive circuit
CN114911209A (en) * 2022-07-18 2022-08-16 巨野恒丰果蔬有限公司 Garlic processing wastewater treatment management system based on data analysis
CN116678653A (en) * 2023-05-26 2023-09-01 长江生态环保集团有限公司 Sewage treatment system abnormality diagnosis method based on sensor self-detection

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