CN204009562U - Transformer body travel position on-line monitoring system - Google Patents
Transformer body travel position on-line monitoring system Download PDFInfo
- Publication number
- CN204009562U CN204009562U CN201420485658.1U CN201420485658U CN204009562U CN 204009562 U CN204009562 U CN 204009562U CN 201420485658 U CN201420485658 U CN 201420485658U CN 204009562 U CN204009562 U CN 204009562U
- Authority
- CN
- China
- Prior art keywords
- module
- transformer
- travel position
- central control
- transformer body
- 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.)
- Expired - Fee Related
Links
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The utility model relates to transformer control technical field, relates in particular to a kind of transformer body travel position on-line monitoring system.The body interior pressure polling module of system setting comprises body interior pressure transducer, bleed pressure sensor and inflation solenoid valve, body interior pressure transducer is positioned at transformer body, bleed pressure sensor is positioned at aerating device gas outlet, inflation solenoid valve is located on transformer body pipeline, detects respectively body interior pressure and loading line pressure; Transformer Geographic mapping module adopts the two locating modules of the GPS/ Big Dipper; Central control module is also connected with wireless communication module and travelling speed polling module.The utility model detects body internal pressure situation in real time, controls in time aerating device and carries out tonifying Qi, and in the time that aerating device gas is deficient, change aerating device.Utilize the satellite positioning module of GPS and the Big Dipper, obtain transformer geographic location, utilize ZIGBEE wireless module outwards to transmit travel position data.
Description
Technical field
The utility model relates to transformer control technical field, relates in particular to a kind of transformer body travel position on-line monitoring system.
Background technology
Transformer body transport is to ensure to produce qualified power transformer to install and use a vital link at engineering site smoothly, transformer dispatch from the factory engineering site transportation due to far away, road conditions are complicated and changeable, even need to change the multiple vehicles, the problems such as any vibrations of occurring in this process, impact, body interior insufficient pressure, hypervelocity, all likely cause body construction, the insulating property equivalent damage of transformer.Participate in conveying people and grasp in time real-time vibrations, impact information, to control the rational speed of a motor vehicle, grasp in time body interior pressure, maintain inner pressure constant, can effectively carry out management and control to transformer transporting process, ensure the safe, reliable of transport.
Traditional, to the control of transformer body transportation, mainly rely on transformer impact record instrument, be used for recording transformer transporting, handling process relevant environment data, the data of record are mainly 3-axis acceleration values, also record humiture, illumination, the data such as atmospheric pressure.Impact record instrument adopts event control working mechanism, and when impact acceleration exceedes the threshold value of restriction, device will record attack time, vibration and weather conditions, limited storage space, and maximum can only record impact event 9000 times.In addition, impact record instrument is arranged on transport transformer body fuel tank outer wall, does not possess the ability of real time record body impact acceleration, and the trend increasing gradually for impact acceleration cannot be made early warning.
Transformer body transports except body impact acceleration is had strict requirement, and speed, body interior pressure to Vehicle Driving Cycle also have strict demand.The generation of impact acceleration is except there being road conditions reason, and driver's operation also has considerable influence, as drive over the speed limit, busy shift, speed change be too fast etc., these factors are have no idea record and supervision of impact record instrument equipment.Body interior pressure needs independently mechanical compression equalizing valve to carry out regulation and control, and cannot judge gas filling bottle gas content, once gas filling bottle pressure scarcity cannot realize body interior ftercompction, causes and in transformer, makes moist etc.
Along with travelling of haulage vehicle, the position moment of transformer changes, although communication tool is very flourishing now, but in particular cases, as mobile phone does not have electricity, does not have signal etc., still the accurate accurate transporting position of value of goods transformer, gps satellite location, Big Dipper location have been developed quite ripe, can address the above problem.
The status data recording in transformer body transportation, the data of traditional impact record instrument are stored in storage card or CD, and data derive and print cumbersome.Along with the radio network technique widespread use of (comprising GPRS, ZIGBEE, less radio-frequency etc.), by the transmission of wireless data, can utilize very easily terminal device to obtain the status data of storing in transformer body transportation, terminal device possesses visualization interface and printing device, is convenient to staff and uses.
Summary of the invention
For addressing the above problem, the utility model merges the function of impact record instrument, mechanical compression equalizing valve, and has added the functions such as car speed supervision, satnav and data wireless transmission, realizes the intelligent monitoring of transformer body transportation.
For achieving the above object, the technical solution of the utility model is: a kind of transformer body travel position on-line monitoring system, comprise impact acceleration polling module, body interior pressure polling module, supply module, electric quantity of power supply monitoring modular and transformer Geographic mapping module, each module is all connected with central control module, described body interior pressure polling module comprises body interior pressure transducer, bleed pressure sensor and inflation solenoid valve, body interior pressure transducer is positioned at transformer body, bleed pressure sensor is positioned at aerating device gas outlet, inflation solenoid valve is located on transformer body pipeline, body interior pressure transducer is connected respectively the first comparer and the second comparator input terminal with source of the gas pressure transducer output terminal, the first comparator output terminal connects inflation solenoid valve by relay, the second comparator output terminal is by central control module unit taking alarm, transformer Geographic mapping module adopts the two locating modules of the GPS/ Big Dipper, central control module is also connected with wireless communication module and travelling speed polling module.
The difference of the utility model and existing transformer transporting long distance control system is that the detection module arranging is more, may affect the various parameters of transformer transporting process more comprehensively, realizes the comprehensive monitoring to transformer transporting process.Be embodied in monitoring and the control to pressure with the main difference of prior art, by establishing SMD pressure transducer near the channel wall inflation solenoid valve, detect the pressure of body interior, and by comparator circuit to the force value recording and setting value comparison, when pressure is during lower than setting value, controlling inflation solenoid valve and open, is body inflation; In the time that body internal pressure reaches setting value, control closed electromagnetic valve, stop inflation.Here pressure transducer used is main schedule die mould sensor.In addition, also at aerating device gas outlet place, pressure transducer is set, if while detecting that in gas replenishment process pressure in pipeline is lower than setting value, show source of the gas scarcity, need to changes aerating device.Ensure that from two aspects body interior has sufficient pressure, has realized the security seal of transportation like this.In addition, the utility model adopts the two locating modules of the GPS/ Big Dipper, realize the location to transportation position resolver, and it is for subsequent use that two kinds of locating modules are realized redundancy, effectively reduce the blind area of Geographic mapping, ensure as much as possible the location to whole geographical coordinate positions, two locating modules work alone separately.
Preferably, described wireless communication module comprises GPRS module and ZIGBEE module, is respectively used to remote control equipment and portable terminal transmission data closely.The utility model utilizes GPRS module and remote monitoring center swap data, realizes remote monitoring.Except possessing GPRS telecommunications functions, be also provided with ZIGBEE module, can realize reliable effectively transmission within the scope of 200 meters of measurement data, be convenient to adopt portable terminal to extract the travel position data of storage.In the time that staff need to obtain historical data, start ZIGBEE communication module, utilize the portable terminal equally with ZIGBEE wireless communication function to obtain historical data, then print or show.
Transformer transporting process has requirement for haulage vehicle travel speed, and excessive velocities can cause damage to transformer.Be all by artificially driver being made stipulations at present, travel but whether in accordance with regulations driver drives in way speed in reality, can not know, so still can not fully monitor the security of transportation.The utility model detects in real time travel speed and uploads to Surveillance center by travelling speed polling module, and Surveillance center can setting value compare, if driver drives over the speed limit, can report to the police, and then can supervise driver to correct in time drive speed.Described travelling speed polling module adopts photoelectricity linear velocity trans, and is connected with central control module by AD conversion chip.
Described impact acceleration polling module adopts 3-axis acceleration sensor, and is connected with central control module by AD conversion chip.3-axis acceleration sensor obtains the acceleration information of three directions, through AD conversion, obtains the numerical information of acceleration.
The utility model also comprises ambient temperature and humidity detection module, and this module comprises temperature sensor and humidity sensor, and two sensors is fixed on body top of oil-tank, its output termination central control module.Real time record humiture information in transit, can accurately reappear transformer transporting status of processes information.
Preferably, described central control module adopts arm processor, is provided with 232 communication interfaces, 485 communication interfaces, I/O mouth.The control to GPS/ Big Dipper locating module be can realize, and GPRS communication module and remote monitoring Background communication controlled.
Advantage of the present utility model is as follows:
1, for transformer body transportation design, can real-time online detection record transformer body impact acceleration, body travelling speed, body interior pressure, and record ambient temperature and humidity information, can accurately reappear the status information in transformer transporting process.
2, detect in real time body internal pressure situation, control in time aerating device and carry out tonifying Qi, and in the time that aerating device gas is deficient, change aerating device.
3, the satellite positioning module based on GPS and the Big Dipper, can be round-the-clock, without dead angle obtain transformer geographic location, grasp transformer body transportation dynamic.
4, the wireless data sending/receiving module based on ZIGBEE, can realize reliable effectively transmission within the scope of 200 meters of measurement data, is convenient to adopt portable terminal to extract the travel position data of storage.
Brief description of the drawings
Fig. 1 is system construction drawing of the present utility model;
Fig. 2 is that impact acceleration of the present utility model, speed, body interior pressure, bleed pressure are patrolled and examined schematic diagram;
Fig. 3 is the application structure figure of transformer body travel position on-line monitoring system;
In figure, 1, impact acceleration polling module, 2, travelling speed polling module, 3, body interior pressure polling module, 4, electric quantity of power supply monitoring modular, 5, central control module, 6, supply module, 7, ambient temperature and humidity detection module, 8, wireless communication module, 9, the two locating modules of the GPS/ Big Dipper, 10, 3-axis acceleration sensor, 11, photoelectricity linear velocity trans, 12, body interior pressure transducer, 13, bleed pressure sensor, 14, arm processor, 15, the first comparer, 16, the second comparer, 17, Temperature Humidity Sensor, 18, portable terminal, 19, GPS and GPRS integrated equipment, 20, the Big Dipper and GPRS integrated equipment, 21, Surveillance center.
Embodiment
A kind of transformer body travel position on-line monitoring system, as shown in Figure 1, 2, comprise impact acceleration polling module 1, body interior pressure polling module 3, supply module 6, electric quantity of power supply monitoring modular 4, transformer Geographic mapping module, wireless communication module 8 and travelling speed polling module 2, each module is all connected with central control module 5.Described central control module 5 adopts arm processor 14.Described body interior pressure polling module 3 comprises body interior pressure transducer 12, bleed pressure sensor 13 and inflation solenoid valve, body interior pressure transducer 12 is positioned at transformer body, bleed pressure sensor 13 is positioned at aerating device gas outlet, inflation solenoid valve is located on transformer body pipeline, body interior pressure transducer 12 is connected respectively the first comparer 15 and the second comparer 16 input ends with source of the gas pressure transducer 13 output terminals, the first comparer 15 output terminals connect inflation solenoid valve by relay, the second comparer 16 output terminals are by central control module unit taking alarm.Transformer Geographic mapping module adopts the two locating modules 9 of the GPS/ Big Dipper.Described wireless communication module 8 comprises GPRS module and ZIGBEE module, and GPRS module is for communicating by letter with remote control equipment, and ZIGBEE module, for being connected with portable terminal, is transmitted data.Described travelling speed polling module adopts photoelectricity linear velocity trans 11, and is connected with central control module by AD conversion chip.Described impact acceleration polling module adopts 3-axis acceleration sensor 10, is bolted on the metal base of top of oil-tank, and is connected with central control module by AD conversion chip.This system also comprises ambient temperature and humidity detection module 7, and this module comprises temperature sensor LM71 and humidity sensor HS1101, and two sensors is fixed on body top of oil-tank, is bolted on metal base its output termination central control module.
Fig. 3 has shown information flow and the application structure figure of transformer body travel position on-line monitoring system, by Temperature Humidity Sensor 17, 3-axis acceleration sensor 10, photoelectricity linear velocity trans 11, body interior pressure transducer 12, bleed pressure sensor 13, signal cable, AD signal processing unit, ARM system, ZIGBEE is wireless, GPS and GPRS integrated equipment 19, the online transport monitoring system of the composition body such as the Big Dipper and GPRS integrated equipment 20, assist the peripherals using to comprise portable terminal 18, mobile internet, gps antenna, gps satellite, Beidou antenna, big-dipper satellite, Surveillance center 21 etc., thereby form the complete function of transformer body on-line monitoring, using-system framework.
The groundwork flow process of the utility model in transformer body transportation is as follows: 3-axis acceleration sensor, speed pickup, two pressure transducers, Temperature Humidity Sensor obtains data according to sense cycle or the Event triggered (moment impact acceleration exceedes secure threshold) set, upload the data to arm processor, arm processor carries out Storage and Processing operation to data, or body interior force value is during lower than setting threshold, comparer starts inflation solenoid valve, transformer body is carried out pneumatic compression, body interior pressure returns to certain level, close inflation solenoid valve.Satellite positioning module is normally in dormant state, and need to obtain vehicle geographical position coordinates time, in the time receiving the positioning instruction of Surveillance center, central control module wakes satellite positioning module up, carries out satnav.If vehicle operator need to check that transformer transporting status data or transformer transport scene to and will check defeated status of processes data for the national games, with the terminal device with ZIGBEE wireless communication function, send reading out data instruction, central control module reads after storage data, sends data to terminal device by ZIGBEE module.
Claims (6)
1. a transformer body travel position on-line monitoring system, comprise impact acceleration polling module, body interior pressure polling module, supply module, electric quantity of power supply monitoring modular and transformer Geographic mapping module, each module is all connected with central control module, it is characterized in that: described body interior pressure polling module comprises body interior pressure transducer, bleed pressure sensor and inflation solenoid valve, body interior pressure transducer is positioned at transformer body, bleed pressure sensor is positioned at aerating device gas outlet, inflation solenoid valve is located on transformer body pipeline, body interior pressure transducer is connected respectively the first comparer and the second comparator input terminal with source of the gas pressure transducer output terminal, the first comparator output terminal connects inflation solenoid valve by relay, the second comparator output terminal is by central control module unit taking alarm, transformer Geographic mapping module adopts the two locating modules of the GPS/ Big Dipper, central control module is also connected with wireless communication module and travelling speed polling module.
2. transformer body travel position on-line monitoring system according to claim 1, is characterized in that: described wireless communication module comprises GPRS module and ZIGBEE module, is respectively used to remote control equipment and portable terminal transmission data closely.
3. transformer body travel position on-line monitoring system according to claim 1, is characterized in that: described travelling speed polling module adopts photoelectricity linear velocity trans, and is connected with central control module by AD conversion chip.
4. transformer body travel position on-line monitoring system according to claim 1, is characterized in that: described impact acceleration polling module adopts 3-axis acceleration sensor, and is connected with central control module by AD conversion chip.
5. according to the transformer body travel position on-line monitoring system described in the above-mentioned any one claim of claim, it is characterized in that: also comprise ambient temperature and humidity detection module, this module comprises temperature sensor and humidity sensor, two sensors is fixed on body top of oil-tank, its output termination central control module.
6. transformer body travel position on-line monitoring system according to claim 5, is characterized in that: described central control module adopts arm processor, is provided with 232 communication interfaces, 485 communication interfaces, I/O mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485658.1U CN204009562U (en) | 2014-08-27 | 2014-08-27 | Transformer body travel position on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485658.1U CN204009562U (en) | 2014-08-27 | 2014-08-27 | Transformer body travel position on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204009562U true CN204009562U (en) | 2014-12-10 |
Family
ID=52049537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420485658.1U Expired - Fee Related CN204009562U (en) | 2014-08-27 | 2014-08-27 | Transformer body travel position on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204009562U (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993595A (en) * | 2015-07-10 | 2015-10-21 | 成都振中电气有限公司 | Distribution monitoring system based on ZigBee and Beidou communication |
| CN106227253A (en) * | 2016-09-13 | 2016-12-14 | 山东电力设备有限公司 | A kind of device that transformator is carried out gas pressure on-line monitoring and automatic inflating device |
| CN106706120A (en) * | 2016-12-20 | 2017-05-24 | 国家电网公司 | Transformer vibration test system and transformer vibration test method |
| CN107063564A (en) * | 2017-04-07 | 2017-08-18 | 国网四川省电力公司 | The few oily equipment monitoring system of electric power |
| CN107727344A (en) * | 2017-09-12 | 2018-02-23 | 国网天津市电力公司电力科学研究院 | A kind of transformer based on wavelet energy method collides record data analysis method |
| CN107861609A (en) * | 2017-11-22 | 2018-03-30 | 中国南方电网有限责任公司超高压输电公司 | A kind of power supply managing devices and methods therefor for reducing monitoring terminal power consumption |
| CN108007504A (en) * | 2017-12-20 | 2018-05-08 | 广东电网有限责任公司江门供电局 | A kind of vehicle-mounted mobile transformer transporting quality on-line monitoring device and method |
| CN108072403A (en) * | 2016-11-16 | 2018-05-25 | 四方特变电工智能电气有限公司 | Transformer transporting remote online monitoring device |
| CN108106672A (en) * | 2017-12-18 | 2018-06-01 | 广东电网有限责任公司江门供电局 | Quickly put into operation evaluation method at a kind of phase shifting transformer scene |
| CN108415391A (en) * | 2018-03-23 | 2018-08-17 | 南京力通达电气技术有限公司 | It is a kind of to transport on-line monitoring system using transformer and its distributed of group parts |
| CN108597753A (en) * | 2018-05-29 | 2018-09-28 | 保定天威保变电气股份有限公司 | Casing reinforcement device and method when a kind of transformer is integrally transported |
| CN108896097A (en) * | 2018-03-28 | 2018-11-27 | 中国电力科学研究院有限公司 | A kind of device and method for being monitored to extra-high voltage disintegrating transportation unit |
| CN108981793A (en) * | 2018-05-28 | 2018-12-11 | 中国电力科学研究院有限公司 | A kind of transformer transporting state on_line monitoring device and method |
| CN109115214A (en) * | 2018-09-27 | 2019-01-01 | 东北大学 | A kind of transportion impact recorder device based on SK-S7G2 |
| CN109559075A (en) * | 2018-11-06 | 2019-04-02 | 西安西变组件有限公司 | Transformer transporting remote monitoring system based on Internet technology |
| CN110057489A (en) * | 2019-05-07 | 2019-07-26 | 北京中瑞和电气有限公司 | A kind of power transformer on-Line Monitor Device and method based on transient state oil pressure feature |
| CN114325265A (en) * | 2021-12-28 | 2022-04-12 | 广东电网有限责任公司江门供电局 | Real-time evaluation system for transportation quality of vehicle-mounted mobile high-voltage power transformation vehicle |
-
2014
- 2014-08-27 CN CN201420485658.1U patent/CN204009562U/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993595A (en) * | 2015-07-10 | 2015-10-21 | 成都振中电气有限公司 | Distribution monitoring system based on ZigBee and Beidou communication |
| CN106227253A (en) * | 2016-09-13 | 2016-12-14 | 山东电力设备有限公司 | A kind of device that transformator is carried out gas pressure on-line monitoring and automatic inflating device |
| CN108072403A (en) * | 2016-11-16 | 2018-05-25 | 四方特变电工智能电气有限公司 | Transformer transporting remote online monitoring device |
| CN106706120A (en) * | 2016-12-20 | 2017-05-24 | 国家电网公司 | Transformer vibration test system and transformer vibration test method |
| CN107063564A (en) * | 2017-04-07 | 2017-08-18 | 国网四川省电力公司 | The few oily equipment monitoring system of electric power |
| CN107727344A (en) * | 2017-09-12 | 2018-02-23 | 国网天津市电力公司电力科学研究院 | A kind of transformer based on wavelet energy method collides record data analysis method |
| CN107727344B (en) * | 2017-09-12 | 2019-09-27 | 国网天津市电力公司电力科学研究院 | A kind of transformer collision record data analysing method based on wavelet energy method |
| CN107861609A (en) * | 2017-11-22 | 2018-03-30 | 中国南方电网有限责任公司超高压输电公司 | A kind of power supply managing devices and methods therefor for reducing monitoring terminal power consumption |
| CN108106672A (en) * | 2017-12-18 | 2018-06-01 | 广东电网有限责任公司江门供电局 | Quickly put into operation evaluation method at a kind of phase shifting transformer scene |
| CN108007504A (en) * | 2017-12-20 | 2018-05-08 | 广东电网有限责任公司江门供电局 | A kind of vehicle-mounted mobile transformer transporting quality on-line monitoring device and method |
| CN108415391A (en) * | 2018-03-23 | 2018-08-17 | 南京力通达电气技术有限公司 | It is a kind of to transport on-line monitoring system using transformer and its distributed of group parts |
| CN108896097A (en) * | 2018-03-28 | 2018-11-27 | 中国电力科学研究院有限公司 | A kind of device and method for being monitored to extra-high voltage disintegrating transportation unit |
| CN108981793A (en) * | 2018-05-28 | 2018-12-11 | 中国电力科学研究院有限公司 | A kind of transformer transporting state on_line monitoring device and method |
| CN108597753A (en) * | 2018-05-29 | 2018-09-28 | 保定天威保变电气股份有限公司 | Casing reinforcement device and method when a kind of transformer is integrally transported |
| CN109115214A (en) * | 2018-09-27 | 2019-01-01 | 东北大学 | A kind of transportion impact recorder device based on SK-S7G2 |
| CN109559075A (en) * | 2018-11-06 | 2019-04-02 | 西安西变组件有限公司 | Transformer transporting remote monitoring system based on Internet technology |
| CN110057489A (en) * | 2019-05-07 | 2019-07-26 | 北京中瑞和电气有限公司 | A kind of power transformer on-Line Monitor Device and method based on transient state oil pressure feature |
| CN110057489B (en) * | 2019-05-07 | 2021-04-27 | 北京中瑞和电气有限公司 | Power transformer online monitoring device and method based on transient oil pressure characteristics |
| CN114325265A (en) * | 2021-12-28 | 2022-04-12 | 广东电网有限责任公司江门供电局 | Real-time evaluation system for transportation quality of vehicle-mounted mobile high-voltage power transformation vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204009562U (en) | Transformer body travel position on-line monitoring system | |
| CN102902247A (en) | Cloud computing based cold-chain logistics monitoring system | |
| CN204984484U (en) | Colliery ventilation remote monitering system | |
| CN204115774U (en) | A kind of environment multiparameter online acquisition supervising device | |
| CN203366097U (en) | Refrigerated-container monitoring device | |
| CN106127430A (en) | The logistics system of a kind of electrically-based enterprise and method for real time tracking | |
| CN107045344A (en) | A kind of intelligent ship mooring arrangement | |
| CN202018600U (en) | On-site mixed explosive-charging supervising device based on Internet of things | |
| CN206805616U (en) | A kind of cold chain car logistic management system | |
| CN203781253U (en) | Long-distance belt conveyor provided with intelligent monitoring system | |
| CN105006153A (en) | Parking lot vehicle flow management system based on wireless sensor technology | |
| CN205899806U (en) | Vehicle drives in wrong direction and lane change detecting system violating regulations based on laser rangefinder | |
| CN204423152U (en) | Aerial barrage thing pick-up unit and automatical pilot transportation vehicle thereof | |
| CN206559382U (en) | Robot C AN communication systems based on microcontroller | |
| CN110267210A (en) | A kind of intelligence express delivery box and its location status acquisition methods | |
| CN102736579A (en) | Wireless remote control temperature measurement trolley communicated with upper computer | |
| CN105632151A (en) | Industry on-site digital signal transmission method | |
| CN205388695U (en) | Ordnance equipment transports whole monitored control system | |
| CN206115227U (en) | Dangerous article transporting device | |
| CN107703347A (en) | The early warning system of broken hidden danger source vehicle outside a kind of high-tension line | |
| CN203461724U (en) | Tower crane management system | |
| CN106768176A (en) | automobile oil mass monitoring system | |
| CN207281593U (en) | Unmanned aerial vehicle control system | |
| CN103306838A (en) | Parameter review method and device | |
| CN206496477U (en) | A kind of TEF exhaust fans control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20180827 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |