CN110007052A - A kind of transmitting transformer fault detection dial plate device - Google Patents
A kind of transmitting transformer fault detection dial plate device Download PDFInfo
- Publication number
- CN110007052A CN110007052A CN201910334626.9A CN201910334626A CN110007052A CN 110007052 A CN110007052 A CN 110007052A CN 201910334626 A CN201910334626 A CN 201910334626A CN 110007052 A CN110007052 A CN 110007052A
- Authority
- CN
- China
- Prior art keywords
- transformer
- information
- gas concentration
- ecu
- dial plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 28
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000003745 diagnosis Methods 0.000 claims description 7
- 230000009466 transformation Effects 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000036031 hyperthermia Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method, e.g. intermittent, or the display, e.g. digital using a threshold to release an alarm or displaying means
Abstract
The present invention provides a kind of transmitting transformer fault detection dial plate devices, including transformer ECU, the data display unit being electrically connected respectively with transformer ECU, gas concentration sensor, infrared temperature sensor, field failure alarm unit, gas concentration sensor can measure the gaseous species and concentration information of the gas collecting cabinet of transformer, infrared temperature sensor can be used for obtaining the temperature information of transformer, the input terminal and gas concentration sensor of transformer ECU, the first signal processing unit is equipped between the output end of infrared temperature sensor, gas concentration sensor, infrared temperature sensor passes through the first signal processing unit and is connected with transformer ECU；First signal processing unit can be screened and be transmitted to the data information detected, and then transformer ECU can be cooperated to handle temperature information, gas concentration type and concentration information；Field failure alarm unit can cooperate transformer ECU to generate corresponding fault alarm information according to the failure mode of transformer.
Description
Technical field
The present invention relates to the detection fields of transmitting transformer, and in particular to a kind of transmitting transformer fault detection dial plate dress
It sets.
Background technique
The production of electric power and distribution are being currently that national economy is rely the important foundation of presence and development.With national economy
Rapid development and living standards of the people continuous improvement, demand of the society to electric energy is increasing, and power system capacity is continuous
Expand, voltage class steps up, and to the capacity of electric system, stability and reliability etc., more stringent requirements are proposed.Wherein
Transformer has entire electric system as one of most important equipment in power generation and assigning process, its safe operation
Significance.Accurate measurements and its whether faulty generation of diagnosis, it is most important for the security reliability for improving electric system.
Transformer monitoring systems of today rely primarily on gas-monitoring, partial discharge monitoring, medium in insulating oil
Damage factor on-line monitoring, localization by ultrasonic etc..And at present there is failure in most transmitting transformer gas-detecting device mostly
Not in time, the temperature that detection device is difficult to find in transmitting transformer when failing is more than the critical value of cabinet and causes fire for detection
The problem of.
Therefore, it is a kind of can according to gas component and concentration come the failure mode of accurate measuring transformer, can timely basis
Failure mode issues corresponding warning message, is detecting the instrument that can avoid the transmitting transformer fault detection of fire when failure in time
Device becomes very necessary.
Summary of the invention
In order to solve the above-mentioned technical problem, a kind of transmitting transformer fault detection dial plate device, can be according to breaking down
The failure mode of transformer is analyzed and shown to the gas component and concentration of the gas collecting cabinet of transformer, and can issue in time pair
The warning message answered.
A kind of transmitting transformer fault detection dial plate device provided by the invention, specifically include transformer ECU, respectively with change
The data display unit of depressor ECU electrical connection, gas concentration sensor, infrared temperature sensor, field failure alarm unit, institute
Stating gas concentration sensor can measure the gaseous species and concentration information of gas collecting cabinet of transformer, the infrared temperature sensing
Device can be used for obtaining the temperature information of transformer, and the input terminal and gas concentration sensor of the transformer ECU, infrared temperature pass
The first signal processing unit is equipped between the output end of sensor, the gas concentration sensor, infrared temperature sensor pass through
First signal processing unit is connected with transformer ECU；First signal processing unit can carry out the data information detected
Screening and transmission, and then transformer ECU can be cooperated to handle temperature information, gas concentration type and concentration information, thus
It is displayed it by data display unit；The field failure alarm unit can cooperate transformer ECU according to transformer
Failure mode generates corresponding fault alarm information.
Further, the gas concentration sensor include CH4 gas concentration sensor, C2H2 gas concentration sensor,
C2H4 gas concentration sensor can be respectively used to identify and detect the gaseous species and gas concentration of CH4, C2H2, C2H4.
Further, the field failure alarm unit includes buzzer, multiple LED lights or indicating fault dial plate.
Further, the fault alarm information according to type corresponds to a variety of LED indication information, the every determination one of transformer ECU
Kind transformer fault just controls a corresponding LED light and opens.
Further, temperature is sent to transformer ECU when temperature of the infrared temperature sensor in transformer is more than 700 DEG C
Pre-warning signal is spent, and then controls the buzzer warning of field failure alarm unit by transformer ECU, to prevent gas dense
When spending sensor failure, the case where transformer catches fire and can not trigger field failure alarm unit generation.
Further, the data display unit can be LCD display.
Further, the transformer ECU is ARM Cortex-A processor.
Further, the transformer ECU is also connected with wireless transmission unit, and the wireless transmission unit can be by transformer
Treated that fault message, temperature information, gas concentration type and concentration information are sent to remote monitoring platform by ECU.
Further, it is stored with the software for analyzing transformer fault type in the ROM of the transformer ECU, can be used for
The temperature information of the gas concentration information and transformer that obtain CH4, C2H2, C2H4 of gas collecting cabinet is performed the steps of, it will
The gas concentration information of CH4, C2H2, C2H4 and the temperature information of transformer are shown by data display unit；To acquisition
To the gas concentration information of CH4, C2H2, C2H4 handled according to triangle diagnosis, and with preset failure diagnostic criteria
It is compareed, so that it is determined that whether transformer breaks down and failure mode；After determining that transformer breaks down, starting scene
Fault alarm unit generates corresponding fault alarm information according to failure mode；By transformer gas acquisition cabinet CH4, C2H2,
The gas concentration information of C2H4, the temperature information of transformer and failure mode information are sent to remote monitoring platform.
The present invention is screened and is transmitted to detection information by the first signal processing unit, so that transformer can be improved
The detection accuracy and detection efficiency of ECU；The present invention is matched with indicating fault dial plate by multiple LED lights to show failure
Situation, to improve the serious forgiveness of the device of invention；The present invention passes through infrared temperature sensor and field failure alarm unit
Match, transformer due to thermal fault when the temperature is excessively high, can prevent gas concentration sensor from failing to make field failure
The case where alarm unit is alarmed occurs, to can effectively avoid fire；The present invention can will will be become by setting wireless transmission unit
Treated that fault message, temperature information, gas concentration type and concentration information are sent to remote monitoring platform by depressor ECU, from
And corresponding transformer is remotely detected convenient for remote monitoring platform.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of transmitting transformer fault detection dial plate device of the invention；
Fig. 2 is a kind of process decision chart of David's triangle of the embodiment of transmitting transformer fault detection dial plate device of the invention；
Fig. 3 is a kind of structural representation of the field failure alarm unit of transmitting transformer fault detection dial plate device of the invention
Figure；
Fig. 4 is a kind of decision table of David's triangle of the embodiment of transmitting transformer fault detection dial plate device of the invention.
Specific embodiment
In order to illustrate the embodiments of the present invention more clearly and/or technical solution in the prior art, attached drawing will be compareed below
Illustrate a specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings, and obtain other embodiments.In addition, the relative position belonged between only indicating each component for being related to orientation is closed
System, rather than absolute positional relation.
As shown in Figure 1, the embodiment provides a kind of transmitting transformer fault detection dial plate device, including transformation
Device ECU, the data display unit being electrically connected respectively with transformer ECU, gas concentration sensor, infrared temperature sensor, scene
Fault alarm unit, the gas concentration sensor can measure the gaseous species and concentration information of the gas collecting cabinet of transformer,
The infrared temperature sensor can be used for obtaining the temperature information of transformer, the input terminal and gas concentration of the transformer ECU
Sensor, infrared temperature sensor output end between be equipped with the first signal processing unit, it is the gas concentration sensor, infrared
Temperature sensor passes through the first signal processing unit and is connected with transformer ECU；First signal processing unit can be to detection
To data information screened and transmitted, and then can cooperate transformer ECU to temperature information, gas concentration type and concentration believe
Breath is handled, to be displayed it by data display unit；The field failure alarm unit can cooperate transformer
ECU generates corresponding fault alarm information according to the failure mode of transformer.
In the embodiment of the present invention, gas concentration sensor includes CH4 gas concentration sensor, C2H2 gas concentration sensing
Device, C2H4 gas concentration sensor can be respectively used to identify and detect the gaseous species and gas concentration of CH4, C2H2, C2H4.
And the data of each gas concentration sensor are then first carried out summation and screening, then the data that will be put in order by the first signal processing unit
It is sent to the ECU of transformer as electronic signals.And in order to improve the data-handling efficiency of the ECU of transformer, also for more
The working condition of good each period by transformer is stored with fault occurrences, and present invention selection uses reaction speed
Fastly, the big ARM Cortex-A series processors of memory capacity.If it is longer that maintenance personnel requires the ECU of transformer that can store
Such as one month operation data of the data of time can then be realized by way of external memorizer.
It is stored with the software for analyzing transformer fault type in the ROM of transformer ECU of the invention simultaneously, can be used for
The temperature information of the gas concentration information and transformer that obtain CH4, C2H2, C2H4 of gas collecting cabinet is performed the steps of, it will
The gas concentration information of CH4, C2H2, C2H4 and the temperature information of transformer are shown by data display unit；To acquisition
To the gas concentration information of CH4, C2H2, C2H4 handled according to triangle diagnosis, and with preset failure diagnostic criteria
It is compareed, so that it is determined that whether transformer breaks down and failure mode；After determining that transformer breaks down, starting scene
Fault alarm unit generates corresponding fault alarm information according to failure mode；By transformer gas acquisition cabinet CH4, C2H2,
The gas concentration information of C2H4, the temperature information of transformer and failure mode information are sent to remote monitoring platform.
Wherein on how to analyze transformer failure mode method, the present invention selected triangle diagnosis.Such as Fig. 2
Shown in 4, David's triangle diagnosis is based on based on three kinds of hydrocarbon gas (%CH4, %C2H4, %C2H2) progress failure classes
Type judges compared with ratio method, the prominent advantage of David's triangulation method be remain some ratio limit values due to falling in offer it
The data failed to judge outside by IEC ratio method.When being diagnosed using David's triangulation method, which region ratio point is fallen in, the area Ze Gai
Fault type corresponding to domain is exactly the corresponding fault type of the ratio, thus it can obtain a kind of diagnostic result and have compared with
Low error rate.The particularity of David's triangulation method is there is visual dissolved gas position.In David's triangle, three
Three angular sides respectively indicate CH4, C2H4 and C2H2: the relative scale of concentration.
For example, if one group of gas data is CH4=70ppm, C2H4=110ppm, C2H2=20ppm, then %CH4=35, %
C2H4=55, %C2H2=10.It can determine whether out that this group of data are in the area T3 according to Fig. 4, that is, belong to thermal fault (t > 700 DEG C).And become
Three kinds of discharge faults (shelf depreciation, low energy electric discharge, high-energy discharge) of depressor and three kinds of overheating faults (cryogenic overheatings, medium temperature mistake
Heat, hyperthermia and superheating) region corresponding in David's triangle is respectively (PD, D1, D2, T1, T2, T3), and DT is then in figure
Indicate to damage biggish heat discharge failure problems, must for David's triangle diagnosis the failure mode of transformer is divided into
7 classes.
As shown in figure 3, the field failure alarm unit of the embodiment of the present invention includes buzzer, multiple LED lights or event
Hinder indication dial plate, the buzzer is corresponding with infrared temperature sensor；When gas concentration sensor failure and transformer
Temperature be higher than 700 DEG C when, infrared temperature sensor can to transformer ECU send heat alarm, at this moment can pass through buzzing
Device can prevent fire to alert personnel in time.And in the embodiment of the present invention, LED light is roughly divided into 7, point
It Dui Ying not 7 kinds of transformer fault types.While the alarm function of fault alarm unit is damaged and influenced to LED light in order to prevent
Energy.The present invention is also provided with corresponding indicating fault dial plate, and dial plate divides 8 areas, other than working normally and indicating area, other 7
Area respectively corresponds a kind of fault condition.Data display unit is preferably also LCD display simultaneously, consequently facilitating maintenance personnel is to change
Temperature information, gas concentration type and the concentration information of depressor are monitored in time.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (9)
1. a kind of transmitting transformer fault detection dial plate device, can be according to the gas of the gas collecting cabinet of the transformer to break down
The failure mode of transformer is analyzed and shown to component and concentration, it is characterised in that: including transformer ECU, respectively with transformer
The data display unit of ECU electrical connection, gas concentration sensor, infrared temperature sensor, field failure alarm unit, the gas
Concentration sensors can measure the gaseous species and concentration information of the gas collecting cabinet of transformer, and the infrared temperature sensor can
For obtaining the temperature information of transformer, the input terminal and gas concentration sensor, infrared temperature sensor of the transformer ECU
Output end between be equipped with the first signal processing unit, the gas concentration sensor, infrared temperature sensor pass through first
Signal processing unit is connected with transformer ECU；First signal processing unit can screen the data information detected
With transmission, and then transformer ECU can be cooperated to handle temperature information, gas concentration type and concentration information, to pass through
Data display unit displays it；The field failure alarm unit can cooperate transformer ECU according to the failure of transformer
Type generates corresponding fault alarm information.
2. a kind of transmitting transformer fault detection dial plate device as described in claim 1, it is characterised in that: the gas concentration
Sensor includes CH4 gas concentration sensor, C2H2 gas concentration sensor, C2H4 gas concentration sensor, can be respectively used to
Identify and detect the gaseous species and gas concentration of CH4, C2H2, C2H4.
3. a kind of transmitting transformer fault detection dial plate device as described in claim 1, it is characterised in that: the field failure
Alarm unit includes buzzer, multiple LED lights or indicating fault dial plate.
4. a kind of transmitting transformer fault detection dial plate device as described in claim 1, it is characterised in that: the fault alarm
Information according to type corresponds to a variety of LED indication information, and a kind of transformer fault of the every determination of transformer ECU just controls corresponding one
A LED light is opened.
5. a kind of transmitting transformer fault detection dial plate device as claimed in claim 1 or 3, which is characterized in that described infrared
Temperature pre-warning signal is sent to transformer ECU when temperature of the temperature sensor in transformer is more than 700 DEG C, and then passes through transformation
Device ECU controls the buzzer warning of field failure alarm unit, so that transformer loses when preventing gas concentration sensor failure
Fire and generation the case where field failure alarm unit can not be triggered.
6. a kind of transmitting transformer fault detection dial plate device as described in claim 1, it is characterised in that: the data are shown
Unit can be LCD display.
7. a kind of transmitting transformer fault detection dial plate device as described in claim 1, it is characterised in that: the transformer
ECU is ARM Cortex-A processor.
8. a kind of transmitting transformer fault detection dial plate device as described in claim 1, it is characterised in that: the transformer
ECU is also connected with wireless transmission unit, and the wireless transmission unit can believe transformer ECU treated fault message, temperature
Breath, gas concentration type and concentration information are sent to remote monitoring platform.
9. a kind of transmitting transformer fault detection dial plate device as described in claim 1, which is characterized in that the transformer
It is stored with the software for analyzing transformer fault type in the ROM of ECU, can be used for performing the steps of acquisition gas collecting
The gas concentration information of CH4, C2H2, C2H4 of cabinet and the temperature information of transformer believe the gas concentration of CH4, C2H2, C2H4
It ceases and is shown with the temperature information of transformer by data display unit；It is dense to the gas of collected CH4, C2H2, C2H4
Degree information is handled according to triangle diagnosis, and is compareed with preset failure diagnostic criteria, so that it is determined that transformer is
It is no to break down and failure mode；After determining that transformer breaks down, start field failure alarm unit, according to failure mode
Generate corresponding fault alarm information；By the gas concentration information of CH4, C2H2, C2H4 of transformer gas acquisition cabinet, transformer
Temperature information and failure mode information be sent to remote monitoring platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910334626.9A CN110007052A (en) | 2019-04-24 | 2019-04-24 | A kind of transmitting transformer fault detection dial plate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910334626.9A CN110007052A (en) | 2019-04-24 | 2019-04-24 | A kind of transmitting transformer fault detection dial plate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110007052A true CN110007052A (en) | 2019-07-12 |
Family
ID=67173966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910334626.9A Pending CN110007052A (en) | 2019-04-24 | 2019-04-24 | A kind of transmitting transformer fault detection dial plate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110007052A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202189049U (en) * | 2011-07-27 | 2012-04-11 | 廖天明 | Transformer insulating-oil on-line detection device |
| CN203479939U (en) * | 2013-10-11 | 2014-03-12 | 陕西省地方电力（集团）有限公司 | Transformer monitoring system |
| CN103630768A (en) * | 2012-08-23 | 2014-03-12 | 天津市电力公司 | Method for diagnosing transformer fault in transformer station |
| CN105182161A (en) * | 2015-09-23 | 2015-12-23 | 国网山东莒县供电公司 | Transformer monitoring system and method |
| CN205720455U (en) * | 2016-03-11 | 2016-11-23 | 合肥师范学院 | A kind of aging on-line detector of distribution transformer |
| CN106483403A (en) * | 2016-09-29 | 2017-03-08 | 重庆电信研究院 | Transformator method of real-time based on the many means of multipath and system |
| CN206432128U (en) * | 2017-02-08 | 2017-08-22 | 南京博路电气有限公司 | A kind of anti-aging display device of transformer |
| CN107515027A (en) * | 2017-09-30 | 2017-12-26 | 王长玉 | Gases Dissolved in Transformer Oil on-line monitoring system and method based on Internet of Things |
| CN207263637U (en) * | 2017-10-19 | 2018-04-20 | 重庆理工大学 | A kind of transformer oil state on_line monitoring system |
| CN108490323A (en) * | 2018-03-21 | 2018-09-04 | 广东电网有限责任公司电力科学研究院 | A kind of system and method for being handled transformer fault |
-
2019
- 2019-04-24 CN CN201910334626.9A patent/CN110007052A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202189049U (en) * | 2011-07-27 | 2012-04-11 | 廖天明 | Transformer insulating-oil on-line detection device |
| CN103630768A (en) * | 2012-08-23 | 2014-03-12 | 天津市电力公司 | Method for diagnosing transformer fault in transformer station |
| CN203479939U (en) * | 2013-10-11 | 2014-03-12 | 陕西省地方电力（集团）有限公司 | Transformer monitoring system |
| CN105182161A (en) * | 2015-09-23 | 2015-12-23 | 国网山东莒县供电公司 | Transformer monitoring system and method |
| CN205720455U (en) * | 2016-03-11 | 2016-11-23 | 合肥师范学院 | A kind of aging on-line detector of distribution transformer |
| CN106483403A (en) * | 2016-09-29 | 2017-03-08 | 重庆电信研究院 | Transformator method of real-time based on the many means of multipath and system |
| CN206432128U (en) * | 2017-02-08 | 2017-08-22 | 南京博路电气有限公司 | A kind of anti-aging display device of transformer |
| CN107515027A (en) * | 2017-09-30 | 2017-12-26 | 王长玉 | Gases Dissolved in Transformer Oil on-line monitoring system and method based on Internet of Things |
| CN207263637U (en) * | 2017-10-19 | 2018-04-20 | 重庆理工大学 | A kind of transformer oil state on_line monitoring system |
| CN108490323A (en) * | 2018-03-21 | 2018-09-04 | 广东电网有限责任公司电力科学研究院 | A kind of system and method for being handled transformer fault |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109781268A (en) | Keypoint part temperature monitoring system in a kind of switchgear based on the infrared thermovision technology of low cost | |
| WO2023221428A1 (en) | Split-phase switch-based fault search system and method | |
| CN109870627A (en) | Submarine cable fault alarm and diagnostic method based on distributed fiber optic temperature strain and vibration monitoring data | |
| CN111913079A (en) | Overhead transmission line cable fault detection system | |
| CN110660199A (en) | Ship monitoring alarm system | |
| CN106872070A (en) | A kind of optical fiber composite cable expert diagnostic system based on many reference amounts | |
| CN107063463A (en) | A kind of high voltage power cable On-line Fault monitor and alarm system | |
| CN216160806U (en) | Disconnection detection module of neutral conductor and electric fire early warning system | |
| CN111562037B (en) | Thermometer fault detection method and device | |
| CN109959862A (en) | A kind of integrated circuit test device real time temperature monitoring system and method | |
| CN110007052A (en) | A kind of transmitting transformer fault detection dial plate device | |
| CN202350908U (en) | Intelligent monitor for vibration and temperature | |
| CN102928684A (en) | Insulation monitoring device for medical isolated power system | |
| CN206656749U (en) | Heat-engine plant sensor fault diagnosis system | |
| CN109506708A (en) | A kind of high voltage electric equipment internal temperature on-line monitoring method | |
| CN114993506A (en) | Switch cabinet cable joint real-time temperature monitoring system based on Internet of things | |
| CN108052054A (en) | A kind of nuclear power station integrated monitoring and analysis system and method | |
| CN210865046U (en) | Test equipment on-line monitoring system with various alarm functions | |
| CN105913884A (en) | Nuclear power station electrical penetration piece gas state monitoring system | |
| CN114487639A (en) | Washing equipment on-line monitoring system based on big data | |
| JPH06288853A (en) | Process instrumentation rack | |
| CN106094688A (en) | A kind of humidity sensor control system | |
| CN207410005U (en) | A kind of energy saving power grid measure voltage ＆ current protective device | |
| CN2524248Y (en) | Computer D.C. voltage and isolation monitor and wire selecting device | |
| CN110987129A (en) | Ultrasonic intelligent water meter fault self-checking and processing system and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190712 |
|
| RJ01 | Rejection of invention patent application after publication |