CN203100923U - Online temperature measurement device for cable joint - Google Patents
Online temperature measurement device for cable joint Download PDFInfo
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- CN203100923U CN203100923U CN 201320139037 CN201320139037U CN203100923U CN 203100923 U CN203100923 U CN 203100923U CN 201320139037 CN201320139037 CN 201320139037 CN 201320139037 U CN201320139037 U CN 201320139037U CN 203100923 U CN203100923 U CN 203100923U
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Abstract
The utility model discloses an online temperature measurement device for a cable joint and belongs to the field of measurement. The online temperature measurement device comprises a wireless temperature sensor shell with an upper cover, a temperature sensor, a low-power-consumption singlechip, a wireless transmitting module and a random power supply, wherein the wireless temperature sensor shell is divided into two parts, namely a cavity and a battery compartment; a temperature measuring probe of the temperature sensor is arranged on the bottom surface of the wireless temperature sensor and is tightly contacted with the surface of an object to be measured; the temperature sensor, the low-power-consumption singlechip and the wireless transmitting module are integrated to the same circuit board and are fixedly arranged in the cavity of the wireless temperature sensor shell; the random power supply is arranged in the battery compartment; and a wireless signal transmitting antenna of the wireless transmitting module is fixed on the upper cover. The temperature measuring probe is prevented from being polluted by dust and dirt, the problem that the potential of the high-voltage end and low-voltage system cannot be reliably isolated is solved, the random power supply is used for supplying the power, and the problem of mounting the power wiring is solved. The online temperature measurement device can be widely applied to the field of equipment state monitoring of power systems.
Description
Technical field
The utility model belongs to fields of measurement, relates in particular to a kind of online temperature measuring equipment that is used for power equipment.
Background technology
During power equipment work, the normal heating of each parts should not surpass its maximum permissible temperature, could guarantee safe operation.The power equipment running status is carried out on-line temperature monitoring, and in time discovering device is unusual, and takes measures to avoid the generation of accident.
The overheated main cause of power equipment is an excess current, so only standby current can not accurately reflect whether overtemperature of equipment, because temperature is the concentrated expression of various factors influence.
Power equipment conduction junction, splicing position to electrically contact situation bad be the major reason that causes that this place's temperature is too high.Therefore junction and splicing position are the main positions of on-line monitoring.
Existing on-line temperature monitoring mode mainly contains two kinds: the contact temperature-measuring of the contactless and employing thermosensitive device of infrared radiation.Contactless infrared sensor is owing to be subjected to environment, humidity, atmosphericly influence greatlyyer, and infrared radiation is just blocked can't accurately be measured, and use has very big limitation.And the sensor of contact directly contacts with point for measuring temperature, and it is little disturbed by environmental factor, can realize that accurate, fast temperature detects.
The deficiency of existing contact temperature-measuring scheme: the contact temperature-measuring scheme adopts thermopair, Fibre Optical Sensor, resistance sensor as temperature probe usually, when adopting thermopair to make sensor, because thermocouple cold junction can not remain on 0 ℃, at room temperature measure and to add cold junction compensation, when hot junction and cold junction spacing are far away in actual measurement, also need to adopt compensating wire; Adopt Fibre Optical Sensor to make sensor when (comprising transmitting terminal, receiving end, connector and optical fiber), how Fibre Optical Sensor installs cabling is a problem very much, the optical fiber transmission signal scheme also is not easy to accomplish the isolation fully of high electronegative potential, when transmitting terminal was installed high-pressure side, the problem of insulation against ground also can't solve; Adopt the direct contact measurement of resistance sensor, at noble potential with wired conveying signal, the simple utilization clearance isolates high electronegative potential, by infrared electro conversion transmission temperature signal is a good way, but infrared emission, receiving tube expose, long-term use can fall dust, filth, make the signal transmission reliability gradually the variation influence measured value also be one and be difficult to the problem that solves, also must carry out on the convenience that on-the-spot professional Installation and Debugging use undesirable in addition.
Design and a kind ofly both can directly contact with tested charged object, temperature probe can be not the problem that presses for solution in the actual operation power work by dust, the filthy online temperature measuring equipment that pollutes again.
The utility model content
Technical problem to be solved in the utility model provides a kind of online temperature measuring equipment of cable splice, it is arranged on temperature probe the bottom of temperature sensor housing, directly closely contact with the surface of testee, avoided by dust, the filthy pollution, it adopts wireless transmission method that detection signal is externally transmitted simultaneously, solve the reliable isolating problem of current potential of high-pressure side and low-voltage system, adopted power supply power supply at random, solved the problem how the power supply cabling is installed.
The technical solution of the utility model is: a kind of online temperature measuring equipment of cable splice is provided, it is characterized in that: described radio temperature sensor comprises the radio temperature sensor housing that has loam cake, temperature sensor, low-power scm, wireless transmitter module and power supply at random; Described radio temperature sensor housing is divided into cavity and battery compartment two parts; The temperature probe of described temperature sensor is arranged on the bottom surface of radio temperature sensor, closely contacts with the surface of testee; Described temperature sensor, low-power scm, wireless transmitter module are integrated on the wiring board, are fixed in the cavity of radio temperature sensor housing; Described power supply at random is arranged in the battery compartment; The wireless signal transmission antenna of described wireless transmitter module is fixed on and covers.
Its described radio temperature sensor is fixed on the surface of cable splice or cable termination through insulation heat-conducting glue bonding or the binding of high temperature band.
Lithium battery and storage capacitor that its described power supply at random comprises and connects, described lithium battery is arranged in the battery compartment; Described storage capacitor setting in the circuit board.
Further, described radio temperature sensor housing bottom is provided with perforate, be positioned at the corresponding setting with position of opening of temperature probe of the temperature sensor on the wiring board, described temperature probe runs through in the perforate that is arranged on housing bottom, directly closely contacts with the surface of testee.
Concrete, described radio temperature sensor comprises temperature sensor, low-power scm, wireless transmitter module and power supply at random; Lithium battery and storage capacitor that described power supply at random comprises and connects; Described low-power scm is read to be connected with the signal output part of temperature sensor by universal serial bus; Described low-power scm is connected power supply by the I/O port with the power end of temperature sensor; Described wireless transmitter module is the Zigbee wireless communication module; Described low-power scm is connected through the signal input part of universal serial bus with the Zigbee wireless communication module; At random between power supply and the Zigbee wireless communication module power end, electronic switching circuit is set; The control end of described electronic switching circuit is connected with the I/O end of low-power scm.
Further, described electronic switching circuit comprises switching tube D1, first, second output terminal of described switching tube D1 respectively with corresponding connection of power input of the positive pole and the wireless transmitter module of lithium battery; The control end of described switching tube D1 is connected with the I/O port of low-power scm.
Compared with the prior art, the utility model has the advantages that:
1. adopt the data transfer mode of wireless network, solve the reliable isolating problem of current potential of high-pressure side and low-voltage system;
2. adopt the power source design of lithium battery and storage capacitor, and whether enter duty, reduce power consumption by this to greatest extent, prolong the serviceable life of radio temperature sensor by low-power scm control Zigbee wireless communication module;
3. the output of radio temperature sensor is digital signal, the direct and cpu i/f by universal serial bus, and the sensor with respect to the output of analog quantitys such as thermopair, thermal resistance need not verification, need not to revise, so stabilization is high.
Description of drawings
Fig. 1 is a physical construction synoptic diagram of the present utility model;
Fig. 2 is the electrical block diagram of radio temperature sensor.
1 is the radio temperature sensor housing among the figure, and 2 is loam cake, and 3 is the temperature probe of temperature sensor, and 4 is cavity, and 5 is battery compartment, and 6 is the wireless signal transmission antenna of wireless transmitter module.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Among Fig. 1, the radio temperature sensor of the technical program comprises the radio temperature sensor housing 1 that has loam cake 2, temperature sensor, low-power scm, wireless transmitter module and power supply at random; Described radio temperature sensor housing is divided into cavity 4 and battery compartment 5 two parts; The temperature probe 3 of described temperature sensor is arranged on the bottom surface of radio temperature sensor, closely contacts with the surface of testee; Described temperature sensor, low-power scm, wireless transmitter module are integrated on the wiring board, are fixed in the cavity 4 of radio temperature sensor housing; Described power supply at random is arranged in the battery compartment 5; The wireless signal transmission antenna 6 of described wireless transmitter module is fixed on the loam cake 2.
Its described radio temperature sensor is fixed on the surface of cable splice or cable termination through insulation heat-conducting glue bonding or the binding of high temperature band.
Lithium battery and storage capacitor that its described power supply at random comprises and connects, described lithium battery is arranged in the battery compartment; Described storage capacitor setting in the circuit board.
Further, described radio temperature sensor housing bottom is provided with perforate, be positioned at the corresponding setting with position of opening of temperature probe of the temperature sensor on the wiring board, described temperature probe runs through in the perforate that is arranged on housing bottom, directly closely contacts with the surface of testee.
The physical construction of its sensor housing adopts flame-resistant high-temperature-resistant PE plastics to make, and is made up of housing and cover plate, and perforate is so that expose temp probe below the housing.
After the wiring board welding of sensor, the debugging well, be assemblied in the bottom of structure, guarantee that probe exposes from housing bottom.Carry out epoxy sealing then.After embedding is good, build loam cake, and through becoming final finished product after shielding processing, the insulation processing operation.
Among Fig. 2, described radio temperature sensor comprises temperature sensor S1, low-power scm U1, wireless transmitter module Z1 and power supply at random on circuit structure; Lithium battery B1 and storage capacitor C1 that described power supply at random comprises and connects; Described low-power scm is read to be connected with the signal output part of temperature sensor by universal serial bus; Described low-power scm is connected power supply by the I/O port with the power end of temperature sensor; Described wireless transmitter module is the Zigbee wireless communication module; Described low-power scm is connected through the signal input part of universal serial bus with the Zigbee wireless communication module; At random between power supply and the Zigbee wireless communication module power end, electronic switching circuit is set; The control end of described electronic switching circuit is connected with the I/O end of low-power scm.
Its described electronic switching circuit comprises switching tube D1, first, second output terminal of described switching tube D1 respectively with corresponding connection of power input of the positive pole and the wireless transmitter module of lithium battery; The control end of described switching tube D1 is connected with the I/O port of low-power scm.
In the technical program, single-chip microcomputer U1 is the core of this device, it is powered to temperature sensor by the I/O pin, and the real time temperature value by universal serial bus (SPI) reading temperature sensor, when the difference of the collection value of temperature value that collects and last time during greater than setting value, single-chip microcomputer is by IO foot control system, makes switching tube D1(PMOS switch) conducting, thereby give the Z1(Zigbee module) power, and by universal serial bus (SPI) temperature value is sent by wireless mode.
The main chip model is as follows:
B1 is the high-performance high temp resistance lithium ion cell;
C1 is a Surface Mount tantalum electric capacity, is used for providing big electric current in the T-time;
D1 is PMOS switch TPS1100;
Z1 is a SZ05-ZBEE series Zigbee wireless communication module;
U1 is the super low power consuming single chip processor PIC24F16KL402 of Microchip company;
S1 is the high precision wide range digital temperature sensor ADT7410 of ADI company.
The temperature sensor of this device adopts digital temperature sensor, because the output of sensor is digital signal, and the direct and cpu i/f by universal serial bus, sensor with respect to the output of analog quantitys such as thermopair, thermal resistance, need not verification, need not to revise, so stabilization is high.
Zigbee equipment is low power consuming devices, its emission output power is 0～3.6dBm, communication distance is generally 30～70m, has energy measuring and link-quality indication ability, according to these testing results, equipment can be adjusted emissive power automatically, under the condition that guarantees communication link quality, and minimally consumer device energy.
About the ZigbBee module, the commercially available prod of a lot of maturations has been arranged now, common Zigbee transmission of wireless signals platform all is made up of one 8 or 16 s' single-chip microcomputer and Zigbee radio frequency chip.Along with the development of chip design, wireless singlechip has appearred at present, and be about to processor module and radio-frequency module and be integrated in the same chip.The CC2430 of Ti-Chipcon company is exactly so, and CC2430 is integrated Zigbee radio-frequency front-end, ROM and 8051 microcontrollers are in a chip, and size only is 7mm * 7mm, so just make device integration height, peripheral components seldom, profile is very little; Under reception and emission mode, current loss is lower than 27mA or 25mA respectively, and supports can reduce power consumption widely by four kinds of dormancy mechanisms; CC2430 is operated in the free frequency range of 2.4GHz, and chip price is cheaper, and use cost is very low, so CC2430 meets the designing requirement of Zigbee wireless data signal transmission network platform very much.
When emission/reception communication distance is nearer, also can select for use the low-cost low energy consumption RF such as CC1100 of Chipncon AS company to receive/send out chip.
Concrete principle of work and application circuit about various ZigBee modules, can be with reference to the product information of the production firm of each chip/module, it also can provide the standard application circuit of chip and the preferred parameter of respective element separately, so its further information is no longer narrated at this.
About the concrete structure of ZigBee wireless network module, also can (www.embedcontrol.com) go up related content in the ZigBee module ZICM2410 application and development guide with reference to " embedded industry control net ", no longer narrate at this.
Because the utility model is arranged on temperature probe the bottom of temperature sensor housing, directly closely contact with the surface of testee, avoided by dust, the filthy pollution, it externally transmits temperature data by radio communication, has solved the reliable isolating problem of current potential of high-pressure side and low-voltage system; The output of radio temperature sensor is digital signal, the direct and cpu i/f by universal serial bus, and the sensor with respect to the output of analog quantitys such as thermopair, thermal resistance need not verification, need not to revise, so stabilization is high.
The utility model can be widely used in power system device status monitoring field.
Claims (6)
1. the online temperature measuring equipment of a cable splice is characterized in that:
Described radio temperature sensor comprises the radio temperature sensor housing that has loam cake, temperature sensor, low-power scm, wireless transmitter module and power supply at random;
Described radio temperature sensor housing is divided into cavity and battery compartment two parts;
The temperature probe of described temperature sensor is arranged on the bottom surface of radio temperature sensor, closely contacts with the surface of testee;
Described temperature sensor, low-power scm, wireless transmitter module are integrated on the wiring board, are fixed in the cavity of radio temperature sensor housing;
Described power supply at random is arranged in the battery compartment;
The wireless signal transmission antenna of described wireless transmitter module is fixed on and covers.
2. according to the online temperature measuring equipment of the described cable splice of claim 1, it is characterized in that described radio temperature sensor is fixed on the surface of cable splice or cable termination through insulation heat-conducting glue bonding or the binding of high temperature band.
3. according to the online temperature measuring equipment of the described cable splice of claim 1, it is characterized in that lithium battery and storage capacitor that described power supply at random comprises and connects, described lithium battery is arranged in the battery compartment; Described storage capacitor setting in the circuit board.
4. according to the online temperature measuring equipment of the described cable splice of claim 1, it is characterized in that described radio temperature sensor housing bottom is provided with perforate, be positioned at the corresponding setting of temperature probe of the temperature sensor on the wiring board with position of opening, described temperature probe runs through in the perforate that is arranged on housing bottom, directly closely contacts with the surface of testee.
5. according to the online temperature measuring equipment of the described cable splice of claim 1, it is characterized in that described radio temperature sensor comprises temperature sensor, low-power scm, wireless transmitter module and power supply at random; Lithium battery and storage capacitor that described power supply at random comprises and connects; Described low-power scm is read to be connected with the signal output part of temperature sensor by universal serial bus; Described low-power scm is connected power supply by the I/O port with the power end of temperature sensor; Described wireless transmitter module is the Zigbee wireless communication module; Described low-power scm is connected through the signal input part of universal serial bus with the Zigbee wireless communication module; At random between power supply and the Zigbee wireless communication module power end, electronic switching circuit is set; The control end of described electronic switching circuit is connected with the I/O end of low-power scm.
6. according to the online temperature measuring equipment of the described cable splice of claim 5, it is characterized in that described electronic switching circuit comprises switching tube D1, first, second output terminal of described switching tube D1 respectively with corresponding connection of power input of the positive pole and the wireless transmitter module of lithium battery; The control end of described switching tube D1 is connected with the I/O port of low-power scm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320139037 CN203100923U (en) | 2013-03-25 | 2013-03-25 | Online temperature measurement device for cable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320139037 CN203100923U (en) | 2013-03-25 | 2013-03-25 | Online temperature measurement device for cable joint |
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| Publication Number | Publication Date |
|---|---|
| CN203100923U true CN203100923U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320139037 Expired - Lifetime CN203100923U (en) | 2013-03-25 | 2013-03-25 | Online temperature measurement device for cable joint |
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| CN (1) | CN203100923U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644884A (en) * | 2013-12-30 | 2014-03-19 | 国家电网公司 | Power cable connector construction normalization detection method based on temperature measurement |
| CN105092061A (en) * | 2015-09-16 | 2015-11-25 | 成都比善科技开发有限公司 | Wireless temperature measurement sensor having self-adaptability |
| CN105181161A (en) * | 2015-08-07 | 2015-12-23 | 航天东方红卫星有限公司 | Line temperature measurement component lead overlapping and installation method |
| CN105547510A (en) * | 2016-01-30 | 2016-05-04 | 国家电网公司 | Temperature measurement early warning system of distribution network cable terminal head |
| CN106872066A (en) * | 2017-04-06 | 2017-06-20 | 国网江苏省电力公司宿迁供电公司 | A kind of integrated temp measuring system of cable and its temp measuring method |
| CN109341877A (en) * | 2018-11-19 | 2019-02-15 | 天津伽利联科技有限公司 | A kind of contact temperature-measuring device |
| CN111964801A (en) * | 2020-09-21 | 2020-11-20 | 国网四川省电力公司眉山供电公司 | Wireless temperature measuring device for transformer pile head |
| CN113686461A (en) * | 2021-08-11 | 2021-11-23 | 国网江苏省电力有限公司电力科学研究院 | T-shaped cable joint self-power-taking temperature sensor, cable joint fault detection system and method |
-
2013
- 2013-03-25 CN CN 201320139037 patent/CN203100923U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644884A (en) * | 2013-12-30 | 2014-03-19 | 国家电网公司 | Power cable connector construction normalization detection method based on temperature measurement |
| CN103644884B (en) * | 2013-12-30 | 2016-05-04 | 国家电网公司 | Based on thermometric power cable connector job specfication detection method |
| CN105181161A (en) * | 2015-08-07 | 2015-12-23 | 航天东方红卫星有限公司 | Line temperature measurement component lead overlapping and installation method |
| CN105092061A (en) * | 2015-09-16 | 2015-11-25 | 成都比善科技开发有限公司 | Wireless temperature measurement sensor having self-adaptability |
| CN105547510A (en) * | 2016-01-30 | 2016-05-04 | 国家电网公司 | Temperature measurement early warning system of distribution network cable terminal head |
| CN106872066A (en) * | 2017-04-06 | 2017-06-20 | 国网江苏省电力公司宿迁供电公司 | A kind of integrated temp measuring system of cable and its temp measuring method |
| CN109341877A (en) * | 2018-11-19 | 2019-02-15 | 天津伽利联科技有限公司 | A kind of contact temperature-measuring device |
| CN111964801A (en) * | 2020-09-21 | 2020-11-20 | 国网四川省电力公司眉山供电公司 | Wireless temperature measuring device for transformer pile head |
| CN113686461A (en) * | 2021-08-11 | 2021-11-23 | 国网江苏省电力有限公司电力科学研究院 | T-shaped cable joint self-power-taking temperature sensor, cable joint fault detection system and method |
| CN113686461B (en) * | 2021-08-11 | 2024-06-04 | 国网江苏省电力有限公司电力科学研究院 | T-shaped cable connector self-power-taking temperature sensor, cable connector fault detection system and method |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130731 |
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| CX01 | Expiry of patent term |