CN106404199A - Cable head online temperature-monitoring apparatus - Google Patents
Cable head online temperature-monitoring apparatus Download PDFInfo
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- CN106404199A CN106404199A CN201510462305.9A CN201510462305A CN106404199A CN 106404199 A CN106404199 A CN 106404199A CN 201510462305 A CN201510462305 A CN 201510462305A CN 106404199 A CN106404199 A CN 106404199A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention provides a cable head wireless temperature-monitoring apparatus, and belongs to the technical field of electric power. The technical problems to be solved of an electric energy parameter monitoring device are as follows: the conventional temperature-monitoring device has following defects: firstly, the installation is not easy, and the networking is inconvenient; secondly, the service lifetime of a battery is short, and power taking is difficult; and thirdly, data collection is not easy, and analysis is not facilitated. The technical scheme to solve the problems and main purposes are as follows: the wireless temperature-monitoring technology is employed; firstly, the installation is convenient, and watchband type installation is adopted; secondly, power supply with the battery is employed, the effective service lifetime can reach more than three years, and the problem of power supply of a wireless module is solved; and thirdly, the networking is convenient, and functions of data storage, inquiry, and statistics can be realized with cooperation of a host computer.
Description
Technical field
The present invention relates to power domain, more particularly, to power param eter supervision device.
Background technology
The important equipment such as power plant, the switch cubicle of transformer station, busbar joint, outdoor chopper switch.In During Process of Long-term Operation, the position such as the contact of switch and bus connect leads to contact resistance excessive and generates heat because aging, and the temperature of these heating positions is difficult to monitoring, and the accident that thus ultimately results in occurs.In recent years, a lot of switch overheat accidents are there are in power plant and transformer station, cause fire and large-area power outage, solving switch problems of excessive heat is to prevent the key that such accident occurs, and realizes the important means that on-line temperature monitoring is to ensure that high pressure equipment safe operation.《The great anti-accident measures of 18 electrical networks of State Grid Corporation of China》, explicitly point out in raw [2005] No. 400 files of skill of national grid：Prevention switchgear current loop is overheated periodically to check the connector portions of switchgear, the current-carrying part of disconnecting switch with temperature measuring equipment（Keypoint part：Contact, wire outlet seat etc.）, particularly during heavy load or high temperature, strengthen, to the supervision running equipment temperature rise, pinpointing the problems and should taking measures in time.Mode of wireless transmission switch cabinet temperature on-line monitoring system is capable of switch cabinet contact, bus, cable temperature real time on-line monitoring, it is to avoid the generation of the problems referred to above.
In existing thermometry, wired thermometric mode device installs inconvenience, and the distance between master controller and point for measuring temperature are required, for cable trench, aerial line, temperature measurement module then cannot be installed, and can only be unfavorable for centralized Control for the end in a certain switch cubicle.And for infrared temperature measurement apparatus, the bad installation of a part of wired temperature measuring equipment can be solved the problems, such as, but if master controller and point for measuring temperature just cannot not measure in an effective space, and have dust after infrared facility time length and cover, impact temperature measurement accuracy, install also inconvenient simultaneously, be equally unfavorable for centralized Control.This device realizes wireless temperature measuring device, easy for installation, and structure is simple, temperature measurement module can be placed on any place needing thermometric.Battery, more than 3 years, facilitates user's centralized Control.
Content of the invention
The present invention is applied to the online temperature survey of joint, contact and the busbar of indoor all kinds of high-tension switch gear.Temperature measurement on-line device two second part is no any with a second part to be electrically connected, and it is to be transmitted by wireless messages that sensor is exchanged with host information, does not interfere with the insulating properties of system, using safer.Present invention mainly solves the problem of above-mentioned tradition temperature measuring equipment, including watchband, temperature measurement module, master controller, master system composition.It is the efficient In-Line Temperature Measure System realized using Modern Sensor Technology, data transmission technology, computer technology.
Temperature measurement module of the present invention proposes watchband type mounting structure, and temperature measurement module adopts watchband type to install, for existing mounting means and contour structures referring to Fig. 1.
Described housing adopts waterproof, fire proofing to make plastic cement watchband.
Described housing has a sizableness in the hole of temperature sensor, facilitates temperature sensor to be in close contact with point for measuring temperature, is advantageous in that, can more accurately measure the temperature of point for measuring temperature.
There is lithium battery installation site, temperature changes battery when exhausting again to facilitate module in described housing.
Described module only module need to be close on testee when installing, and then slowly strain one end of watchband through the other end, until watchband is tightly tied up on testee, notice that pulling force must not be excessive, be advisable with just straining.After watchband is fixing, unnecessary prolongation watchband can be tied up or cut, mounting means is extremely easy.
The power taking problem of temperature measurement module is always the emphasis of wireless temperature measurement technology, the present invention proposes to adopt battery power supply mode, one is that battery is powered and compared TV power taking more safety economy, but how to extend battery life it is ensured that taking into account battery life while wireless temperature measurement real-time.And early warning can be carried out to battery electric quantity it is ensured that effective, the lasting operation of equipment, then need designer more to be optimized in module hardware and software aspects.
Hardware aspect, using low-power chip, with electric current expense under holding state under reduction working condition.
Software aspects reduced code, the process time of shortening program as far as possible, and immediately enter resting state after the data transfer is complete, and data is sent using the stepping cycle, cycle is short is sent, the cycle that sends under low temperature is long, and it is normal that normal temperature sends the cycle under high temperature, so both can reduce power consumption, also can guarantee that the real-time Transmission of temperature.
Described module can carry out battery electric quantity early warning it would be desirable to know battery electricity how many so that we can schedule ahead, replacing battery when factory overhaul or when stopping production.
Described module adopts NRF905 wireless transport module, works in 433MHZ channel, is made up of frequency synthesizer, reception demodulator, power amplifier, crystal oscillator and manipulator.It is not required to additional SAW filter, automatically process head and CRC（CRC）, communicated with single-chip microcomputer using SPI interface.Operating current is very low, is conducive to energy-conservation.
The master controller that the present invention mentions, is arranged on the panel of switch cabinet body, is less than the distance of 100m with temperature measurement module, and the antenna of wireless receiver is arranged in cabinet top.
Described master controller has data receiver function, receives the temperature information from each temperature measurement module, and is stored in buffer area.Data reception module is also to be completed by NRF905 radio receiving transmitting module, is simply set to data is activation function on temperature measurement module, is set to input receive capabilities on master controller.
Described master controller has RS485 data-transformation facility, and the temperature data in buffer area is transmitted to host computer.
Described master controller has warning function, can interpolate that the position of abnormal data and produces warning.
The Managing system of above position machine that the present invention mentions, is user oriented operationalization interface, and it can help user preferably to check the equipment state of each point for measuring temperature.
Described host computer has the temperature information of real-time each equipment of display, can arrange the multistage limit value of temperature, visual display device safety and defect estimation grade.
Described host computer can be supported notable formula variation analyses and aspect ratio analytic process, judge equipment operating condition according to long-term temperature analysis of trend and provide suggestion to device temperature historical data analysis.
Described host computer can carry out data-printing, data sharing, data over run warning function.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing of required use in embodiment or description of the prior art will be briefly described below, it should be evident that drawings in the following description are only some embodiments of the present invention.
Fig. 1：The type of temperature transducer and overall dimensions
Fig. 2：Temperature collect module hardware block diagram
Fig. 3：Host controller hardware block diagram
Fig. 4：Slave module software design flow chart
Fig. 5：Master controller software design flow chart.
Specific embodiment
When being embodied as, temperature collect module hardware designs such as Fig. 2, module passes through battery（①）Power supply, battery uses chargeable lithium cell.When can charge after dead battery and recycle.Temperature sensor DS18B20（②）Gather each node temperature, MCU is controlled to low-power chip（③）.It is responsible for DS18B20（②）Collect data is converted, and the data after transformed pass through NRF905（④）The data transfer of collection is gone out by wireless module. and each slave module has different addresses, has the temperature of different address during the temperature that such master controller shows.
Temperature measurement module software design such as Fig. 4 when being embodied as, comprise the mentality of designing of software, flow process, upper temperature sensor self-inspection, as normal temperature normally will be detected, as unqualified in self-inspection then to master controller send fault message, temperature data on master controller collecting temperature sensor after the completion of self-inspection, then gather the information about power of battery, MCU treatment temperature information about power simultaneously judges that this temperature is long period transmission or the transmission of short cycle of setting, and transmit data to master controller, then single-chip microcomputer enters park mode, wait timing to wake-up, collecting temperature information and information about power send again after wake-up.So Real-time Collection is realized in circulation.
When being embodied as, sensor is installed and is layouted and should follow safe and simple, reliable principle, according to factors such as the type of switch cubicle, load current, movable connecting portions, determines the switch cubicle needing install sensor.Principle of layouting is as follows：High current cabinet is preferential, and the change of temperature is closely related with load current value, the high current cabinet in transformer station, such as incoming cabinet of main transformer, contact cabinet etc., should preferentially install wireless temperature measuring device；Movable connecting portion is preferential, and connecting portion is even more important as a contact weak spot, the monitoring of temperature, isolation switch joint, plug of withdraw-type chopper etc. such as in cabinet, and monitoring temperature point should cover and put in place；With due regard to TA joint area in cabinet, the fixing TA in cabinet is generally solid insulation structure, once loose contact at lead, transformer connecting portion temperature can be led to too high, affects insulation characterisitic, should with due regard to layout；Do not install on fixing cable connector place principle in cabinet, cable and junction malfunction is many to be caused because insulation is impaired, the fault being led to by heating is less, and ordinary tap cabinet all can be utilized infrared glass window to observe end and joint area, therefore, monitoring to cable connector preferentially should carry out infrared monitoring using infrared glass window, and monitors end electric discharge sign by ultraviolet imagery.Do not consider on cable connector Some principles temperature point is installed；Withdraw-type chopper mount point is preferably isolated plug moving contact side, have a power failure in view of switch cabinet bus difficult, withdraw-type switch cabinet chopper point for measuring temperature is installed on stab contact in principle and moves side contact, and the structure of acting arm when installing, must not be become, such as dismantle dynamic side fingertip, dismounting dynamic side contact arm insulating cylinder, dismounting insulating cylinder snap ring, destroy insulation parcel etc..
Hardware designs block diagram such as Fig. 3 of master controller when being embodied as, master controller software design flow chart such as Fig. 5, power module（1）Main controller is powered, by NRF905（3）Receive the data from slave module collection, main control chip (2) processes and collects to obtain data, and data result is shown on liquid crystal display screen（4）User can inquire about each node temperature by button (5), also each node temperature can be configured, and reports to the police when the temperature receiving is more than setting value, also the threshold value of temperature rise sizes values can be set simultaneously, report to the police when the temperature change of secondary acquisition is very big（6）, user can be by 485 communications simultaneously（7）Temperature data is transferred to host computer（8）.
Host computer when being embodied as is mainly based upon the management of data base, using computer technology, by showing of the value image of each temperature measurement node, to make arrangements before it is too late, improve production efficiency.
Claims (7)
1. a kind of end wireless temperature measuring device, forms including master controller, temperature measurement module, host computer, wherein：Master controller adopts high performance DSP, the temperature information of each point for measuring temperature from each temperature measurement module can quickly be processed, and the temperature information of each point for measuring temperature is transferred in host computer by RS485, wireless module uses nRF905 radio receiving transmitting module, it is operated in 433MHZ frequency range, host computer, using the configuration software by Beijing three-dimensional force control exploitation, realizes centralized Control.
2. temperature measurement module as claimed in claim 1, it is characterized in that, including temperature transducer, microprocessor, wireless sending module, watchband type mounting structure and battery composition, cable head temperature is gathered by temperature transducer DS18B20, the temperature information of microcomputer reads temperature transducer, wireless sending module NRF905 is responsible for sending data on master controller.
3. the power supply mode of temperature measurement module as claimed in claim 2, take battery powered power supply mode, using low-power chip and battery saving mode is used to each chip in temperature measurement module, and after collecting temperature data and successfully sending, microprocessor sleeping for a period of time, to extend the service life of battery with this.
4. temperature measurement module as claimed in claim 2 mounting means, take watchband type install, have easy for installation, the purpose of save space and cost.
5. master controller as claimed in claim 1, it is characterized in that, including microprocessor, wireless receiving module, flush type mounting structure, peripheral circuit composition, wireless receiving module is the NRF905 radio receiving transmitting module being arranged on reception pattern, receive the temperature information on temperature measurement module, the information that microcomputer reads receive, and the source of this data and temperature are shown on liquid crystal display screen, and alert process is made to abnormal data.
6. the peripheral circuit as described in right 5, including button enquiry circuit, 485 data transmission circuits, liquid crystal display circuit etc., the data that single-chip microcomputer can be processed is shown and is transmitted, and facilitates personnel to check.
7. host computer configuration software as claimed in claim 1, user can be directly viewable the temperature of each node by computer, and can check the history curve of each temperature, facilitates user record, analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462305.9A CN106404199A (en) | 2015-07-31 | 2015-07-31 | Cable head online temperature-monitoring apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462305.9A CN106404199A (en) | 2015-07-31 | 2015-07-31 | Cable head online temperature-monitoring apparatus |
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| CN106404199A true CN106404199A (en) | 2017-02-15 |
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| CN201510462305.9A Pending CN106404199A (en) | 2015-07-31 | 2015-07-31 | Cable head online temperature-monitoring apparatus |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969847A (en) * | 2017-05-23 | 2017-07-21 | 兰州中联电子科技有限公司 | A kind of wireless temperature measuring device for switch cabinet |
| CN107293949A (en) * | 2017-07-10 | 2017-10-24 | 佛山杰致信息科技有限公司 | High voltage power distributing cabinet |
| CN109238481A (en) * | 2018-09-21 | 2019-01-18 | 深圳供电局有限公司 | Cable temperature detection device |
-
2015
- 2015-07-31 CN CN201510462305.9A patent/CN106404199A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969847A (en) * | 2017-05-23 | 2017-07-21 | 兰州中联电子科技有限公司 | A kind of wireless temperature measuring device for switch cabinet |
| CN107293949A (en) * | 2017-07-10 | 2017-10-24 | 佛山杰致信息科技有限公司 | High voltage power distributing cabinet |
| CN109238481A (en) * | 2018-09-21 | 2019-01-18 | 深圳供电局有限公司 | Cable temperature detection device |
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Application publication date: 20170215 |
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| WD01 | Invention patent application deemed withdrawn after publication |