CN203785803U - Online monitoring device for contact temperature of low-voltage cable - Google Patents
Online monitoring device for contact temperature of low-voltage cable Download PDFInfo
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- CN203785803U CN203785803U CN201320755350.XU CN201320755350U CN203785803U CN 203785803 U CN203785803 U CN 203785803U CN 201320755350 U CN201320755350 U CN 201320755350U CN 203785803 U CN203785803 U CN 203785803U
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- 238000012806 monitoring device Methods 0.000 title abstract description 3
- 238000013480 data collection Methods 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 14
- 239000006071 cream Substances 0.000 claims description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 10
- 229910052744 lithium Inorganic materials 0.000 claims description 10
- 239000004677 Nylon Substances 0.000 claims description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- Arrangements For Transmission Of Measured Signals (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model provides an online monitoring device for contact temperature of a low-voltage cable. The device is mainly formed by a temperature data acquisition module and a temperature data collection module. The temperature data acquisition module is mainly formed by a housing, an acquisition circuit board, a temperature sensor, an acquisition single-chip microcomputer, and an acquisition infrared receiving and transmitting module. The temperature data collection module is mainly formed by a collection circuit board, a plastic housing, a collection single-chip microcomputer, a collection infrared receiving and transmitting module, a clock chip, an LED signal display lamp, a display screen interface, a humiture sensor, and a dial switch. The temperature data collection module and the temperature data acquisition module communicate in an infrared manner. The device enables 24h real-time online monitoring of contact temperature of the low-voltage cable, thereby improving measuring accuracy degree of temperature data and providing support and help for improving power grid operation and management level. The device is compact in structure and is convenient to install and implement.
Description
Technical field
The utility model relates to a kind of cable temperature monitoring device.
Background technology
The temperature variation of cable is directly connected to the safe and stable operation of cable, and the temperature at cable junctions place is the most key, and cable fault is mainly in this.Current, when high-tension cable, long-distance cable thermometric, realized Fiber Optic Pyrometer, technique can be realized the temperature survey to cable overall process, but cost is higher, for widely used low-voltage cable, especially substation transformer low-pressure line-outgoing cable is not suitable for adopting technique.
Current low-voltage cable adopts the application of infrared temperature-test technology conventionally, but infrared technique is when measuring cable junctions, error is large and need artificial hand-held infrared thermometer device collecting temperature, can not realize 24 hours online real time temperature measurements, is unfavorable for improving the management level to cable machinery.
Summary of the invention
For solving the problems of the technologies described above, the utility model provides a kind of low-voltage cable contact temperature on-Line Monitor Device.
The utility model is mainly comprised of temperature data acquisition module and temperature data collection module, temperature data acquisition module is mainly comprised of shell, collecting circuit board, temperature sensor, shell is fixed on low-voltage cable contact place by high temperature resistant nylon band, the upper end open of shell is sealed by acrylic board, the lower end of shell arranges heat-conducting cream chamber, match with low-voltage cable in heat-conducting cream chamber, set temperature sensor in heat-conducting cream chamber; Collecting circuit board is set in shell, gathers single-chip microcomputer, gathers infrared transceiver module, temperature sensor and lithium battery, collecting circuit board is fixed in shell by circuit board bearing, gather single-chip microcomputer, collection infrared transceiver module, temperature sensor and lithium battery and be connected on the corresponding point of fixity of collecting circuit board, collection single-chip microcomputer carries out unibus mode with temperature sensor and is connected; Temperature data collection module is mainly comprised of collecting circuit plate, plastic casing, collecting circuit plate is fixed in plastic casing, arranges and collects single-chip microcomputer, collects infrared transceiver module, clock chip, LED signal display lamp, display screen interface, Temperature Humidity Sensor, toggle switch, ship type switch, 232 interfaces, 485 interfaces on collecting circuit plate; Collecting infrared transceiver module, clock chip, LED signal display lamp, display screen interface, Temperature Humidity Sensor, toggle switch, 232 interfaces, 485 interfaces is connected with the corresponding port of collecting single-chip microcomputer respectively; Between temperature data collection module and temperature data acquisition module, take over the horizon communication system.
Preferably, the operating voltage of described collection single-chip microcomputer is DC3V, and foreign frequency is 2.7648MHz.
Preferably, on described collecting circuit plate, GPIO interface is set, GPIO interface is connected with corresponding port on collection single-chip microcomputer.
Temperature data collection module and temperature data acquisition module are carried out data interaction by collecting infrared transceiver module and gathering infrared transceiver module, temperature data collection module can be realized data interaction with a plurality of temperature data acquisition modules simultaneously, demonstration, the query function of whole temperature data acquisition module temperature datas that realization connects by infrared communication, simultaneously, also the communication apparatus that can provide for oneself with user is networked, data-interface is provided, this module provides two kinds of serial line interfaces, is respectively 232,485 interfaces.
Adopt the utility model can realize 24 hours real time on-line monitorings of low-voltage cable contact temperature, improved temperature data and measured order of accuarcy, for improving Regulation level, support is provided and has helped.Apparatus structure described in the utility model is compact, is convenient to install implement.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Fig. 1 is the structural representation of temperature data acquisition module described in the utility model;
Fig. 2 is the circuit diagram of temperature data acquisition module described in the utility model;
In figure, 1-1 gathers single-chip microcomputer, 1-2 gathers infrared transceiver module, 1-3 lithium battery, 1-4 collecting circuit board, 1-5 temperature sensor, 1-6 Acquisition Circuit board support, 1-7 shell, 1-8 high temperature resistant nylon band, 1-9 low-voltage cable, 1-10 heat-conducting cream chamber, 1-11 acrylic board.
Fig. 3 is the structural representation of temperature data collection module described in the utility model;
Fig. 4 is the circuit diagram of temperature data collection module described in the utility model;
In figure, 2-1 collects single-chip microcomputer, 2-2 collects infrared transceiver module, 2-3 clock chip, 2-4 Temperature Humidity Sensor, 2-5 toggle switch, 2-6 ship type switch, 2-7 display screen interface, 2-8LED signal display lamp, 2-9 232 interfaces, 2-10 485 interfaces, 2-11 supply socket, 2-12 GPIO interface, 2-13 collecting circuit plate.
Embodiment
As depicted in figs. 1 and 2, temperature data acquisition module is mainly comprised of shell 1-7, collecting circuit board 1-4, temperature sensor 1-5, shell 1-7 is fixed on low-voltage cable 1-9 contact place by high temperature resistant nylon band 1-8, the upper end open of shell 1-7 is sealed by acrylic board 1-11, the lower end of shell 1-7 arranges heat-conducting cream chamber 1-10, heat-conducting cream chamber 1-10 matches with low-voltage cable 1-9, set temperature sensor 1-5 in the 1-10 of heat-conducting cream chamber; Collecting circuit board 1-4 is set in shell 1-7, gathers single-chip microcomputer 1-1, gathers infrared transceiver module 1-2, temperature sensor 1-5 and lithium battery 1-3, collecting circuit board 1-4 is fixed in shell 1-7 by circuit board bearing 1-6, gather single-chip microcomputer 1-1, collection infrared transceiver module 1-2, temperature sensor 1-5 and lithium battery 1-3 and be connected on the corresponding point of fixity of collecting circuit board 1-4, collection single-chip microcomputer 1-1 carries out unibus mode with temperature sensor 1-5 and is connected.
functional description:
(1), gather single-chip microcomputer 1-1: operating voltage DC3V, foreign frequency 2.7648MHz, adopts low-voltage, low clock frequency can effectively reduce system power dissipation, improves working time.As the s operation control core of temperature data acquisition module, mainly undertaking following several functions: 1. carry out unibus mode with DS18B20 temperature sensor 5 and be connected, obtain real time temperature data, and be kept in inner EEPROM; 2. to receiving infrared signal, decode, obtain the temperature data monitoring to the transmission of temperature data collection module after correct instruction.
(2), gather infrared transceiver module 1-2: gathering under the control of single-chip microcomputer 1-1, receive the read data instruction that temperature data collection module is sent, to temperature data acquisition module feedback information, realize the data interaction between temperature data collection module and temperature data acquisition module.At low-voltage cable place, through field test, infrared signal is not subject to the impact of low-voltage AC.
(3), lithium battery 1-3: for each device of temperature data acquisition module provides work energy, lithium battery 1-3 accumulate is many, is taking on the basis of device consumption reduction, and a lithium battery 1-3 can ensure acquisition module work 10-12 months.
(4), collecting circuit board 1-4: for all kinds of components and parts provide point of fixity.
(5), DS18B20 temperature sensor 1-5: adopt the interface mode of unibus to be connected and can to realize both-way communication with collection single-chip microcomputer 1-1, unibus has good economy performance, antijamming capability is strong, the advantages such as the scene temperature that is suitable for rugged surroundings is measured, easy to use, measuring accuracy is high, the measurement range of DS18B20 temperature sensor 1-5 is-55 ℃-125 ℃, within the scope of-10 ℃-85 ℃, precision is ± 0.5 ℃, in use without any need for peripheral cell.
(6), Acquisition Circuit board support 1-6: play the fixedly effect of collecting circuit board 4 by bolt in temperature data acquisition module housing 1-7.
(7), shell 1-7: adopt the insulating material of high temperature resistant difficult combustion, play protection, fix, the function of buffer circuit plate.
(8), high temperature resistant nylon band 1-8: temperature data acquisition module is fixed on to low-voltage cable 9 contact thermometric places.
(9), low-voltage cable 1-9: the low-voltage cable that needs thermometric.
(10), heat-conducting cream chamber 1-10: fill the heat-conducting cream of full heat conductive insulating in it, play heat transfer, insulation buffer action.
(11), acrylic board 1-11: package temperature data acquisition module, each components and parts of protection collecting circuit board 1-4, reduce the dust pollution of collecting circuit board 1-4, are easy to ultrared penetrating simultaneously.
As shown in Figure 3 and Figure 4, temperature data collection module is mainly comprised of collecting circuit plate 2-13, plastic casing, collecting circuit plate 2-13 is fixed in plastic casing, arranges and collects single-chip microcomputer 2-1, collects infrared transceiver module 2-2, DS1302 clock chip 2-3, LED signal display lamp 2-8, display screen interface 2-7, Temperature Humidity Sensor 2-4, toggle switch 2-5, ship type switch 2-6,232 interface 2-9,485 interface 2-10, GPIO interface 2-12 on collecting circuit plate 2-13; Collecting infrared transceiver module 2-2, DS1302 clock chip 2-3, LED signal display lamp 2-8, display screen interface 2-7, Temperature Humidity Sensor 2-4, toggle switch 2-5,232 interface 2-9,485 interface 2-10, GPIO interface 2-12 is connected with the corresponding port of collecting single-chip microcomputer 2-1 respectively.
functional description:
(1), collect single-chip microcomputer 2-1: select STC12 series to there is the single-chip microcomputer of two serial ports, to realize 485,232 functions.External clock frequency 11.0592MHz, 12T pattern, it is computing, the control center of collection module.By the address of key-press input acquisition module, and be kept in EEPROM.
(2), collect infrared transceiver module 2-2: collecting under the control of single-chip microcomputer 2-1, carry out data interaction with the temperature data acquisition module of appropriate address.After receiving the instruction of collecting temperature, send infrared waves and arouse each acquisition module, time delay 10-20 millisecond, sending module address, opening timing function, duration 10 is delicate, if obtain the data that acquisition module is uploaded, data is preserved; If the data of not receiving, are designated as 0xFF by the scale of thermometer, then send next module's address, until all travel through once.
(3), DS1302 clock chip 2-3: the high accuracy time is provided.
(4), AM2301 Temperature Humidity Sensor 2-4: the humiture value of measuring place, temperature data collection module place.Temperature acquisition scope :-10-120 ℃, error 1%; Humidity collection scope: 0-100%, error 2%.
(5), toggle switch 2-5: for 485 communications provide the machine address.In the place of using user, may there are a plurality of 485 equipment, in order to strengthen the versatility of this module, the address of this module is set by toggle switch 5, provide 256 addresses to select for user's 485 communication facilitiess.
(6), ship type switch 2-6: in the situation that supply socket 2-11 is communicated with power supply, as the power switch of collecting circuit plate 2-13.
(7), 1602 display screen interface 2-7: data, command interface that 1602 LCD screen are provided.1602 demonstration provides two kinds of patterns, the one, normal on-mode, the 2nd, timed-shutoff close pattern, button by module-external arranges, can carry out freely changing of two kinds of patterns, wherein, the timed-shutoff close pattern time interval is defaulted as 60S, and user also can shorten or extend timing length by button, and built-in duration is 30S, 60S, 90S, 120S regularly.
(8), LED signal display lamp 2-8: be used to indicate the duty of Current Temperatures data collection module, show relevant configuring condition.Respectively display power supply state (redness lights as conducting), communicate by letter and indicate (lighting is 485 communication patterns) with acquisition module communications status (flicker is for communicating by letter), 232 communication indications (lighting is 232 communication patterns), 485.
(9), 232,485 interfaces: this module can realize the serial line interface with subscriber equipment, and by carrying out model selection at model selection button, acquiescence is 232 communications, 1602 screen displays " T232 " printed words, long by model selection button, switch to 485 patterns, 1602 screen displays " T485 " printed words, the serial communication rule of the two is: pattern 1,10 of baud rate 9600, one frames, 1 start bit, 8 data bit, 1 position of rest.
(10), GPIO interface 2-12: 12,4, the GPIO interface of reserved expansion is 51 type I/O mouths of standard, is convenient to user's expansion and carries out secondary development.
Between said temperature data collection module and temperature data acquisition module, take over the horizon communication system.
Claims (3)
1. a low-voltage cable contact temperature on-Line Monitor Device, it is characterized in that, mainly by temperature data acquisition module and temperature data collection module, formed, temperature data acquisition module is mainly comprised of shell, collecting circuit board, temperature sensor, shell is fixed on low-voltage cable contact place by high temperature resistant nylon band, and the upper end open of shell is sealed by acrylic board, and the lower end of shell arranges heat-conducting cream chamber, match with low-voltage cable in heat-conducting cream chamber, set temperature sensor in heat-conducting cream chamber; Collecting circuit board is set in shell, gathers single-chip microcomputer, gathers infrared transceiver module, temperature sensor and lithium battery, collecting circuit board is fixed in shell by circuit board bearing, gather single-chip microcomputer, collection infrared transceiver module, temperature sensor and lithium battery and be connected on the corresponding point of fixity of collecting circuit board, collection single-chip microcomputer carries out unibus mode with temperature sensor and is connected; Temperature data collection module is mainly comprised of collecting circuit plate, plastic casing, collecting circuit plate is fixed in plastic casing, arranges and collects single-chip microcomputer, collects infrared transceiver module, clock chip, LED signal display lamp, display screen interface, Temperature Humidity Sensor, toggle switch, ship type switch, 232 interfaces, 485 interfaces on collecting circuit plate; Collecting infrared transceiver module, clock chip, LED signal display lamp, display screen interface, Temperature Humidity Sensor, toggle switch, 232 interfaces, 485 interfaces is connected with the corresponding port of collecting single-chip microcomputer respectively; Between temperature data collection module and temperature data acquisition module, take over the horizon communication system.
2. low-voltage cable contact temperature on-Line Monitor Device as claimed in claim 1, is characterized in that, the operating voltage of described collection single-chip microcomputer is DC3V, and foreign frequency is 2.7648MHz.
3. low-voltage cable contact temperature on-Line Monitor Device as claimed in claim 1, is characterized in that, on described collecting circuit plate, GPIO interface is set, GPIO interface with collect single-chip microcomputer on corresponding port be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755350.XU CN203785803U (en) | 2013-11-27 | 2013-11-27 | Online monitoring device for contact temperature of low-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755350.XU CN203785803U (en) | 2013-11-27 | 2013-11-27 | Online monitoring device for contact temperature of low-voltage cable |
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| Publication Number | Publication Date |
|---|---|
| CN203785803U true CN203785803U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320755350.XU Expired - Lifetime CN203785803U (en) | 2013-11-27 | 2013-11-27 | Online monitoring device for contact temperature of low-voltage cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592043A (en) * | 2013-11-27 | 2014-02-19 | 国家电网公司 | Low-voltage cable contact temperature on-line monitoring device |
-
2013
- 2013-11-27 CN CN201320755350.XU patent/CN203785803U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592043A (en) * | 2013-11-27 | 2014-02-19 | 国家电网公司 | Low-voltage cable contact temperature on-line monitoring device |
| CN103592043B (en) * | 2013-11-27 | 2015-10-28 | 国家电网公司 | A kind of low-voltage cable contact temperature on-Line Monitor Device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140820 Effective date of abandoning: 20151028 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |