CN201853803U - Flexible foldable dipole antenna device for temperature measurement system of buried cable - Google Patents
Flexible foldable dipole antenna device for temperature measurement system of buried cable Download PDFInfo
- Publication number
- CN201853803U CN201853803U CN2010205801003U CN201020580100U CN201853803U CN 201853803 U CN201853803 U CN 201853803U CN 2010205801003 U CN2010205801003 U CN 2010205801003U CN 201020580100 U CN201020580100 U CN 201020580100U CN 201853803 U CN201853803 U CN 201853803U
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- dipole antenna
- antenna
- cable
- temperature measurement
- probe
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Abstract
The utility model belongs to the technical field of cable monitoring and relates to a flexible foldable dipole antenna device for a temperature measurement system of a buried cable. The flexible foldable dipole antenna device comprises a foldable dipole antenna, an antenna terminal and a probe joint, wherein the antenna terminal is connected with a feeder line of the antenna; the distance of two wires of the foldable dipole antenna is 5-10mm; the foldable dipole antenna is manufactured on a flexible substrate which can be fixed on the external surface of the buried cable; the probe joint is matched with the antenna terminal; and the probe joint is provided with a short transmission line for connecting the probe joint to a probe. With the adoption of the flexible foldable dipole antenna device, the integral set of the temperature measurement system of the cable is easy to be wound with a waterproof layer; the adhesive tape of the wound waterproof layer exerts no influence on the workability of the foldable dipole antenna and can isolate the temperature measurement probe from the outside air; therefore, the waterproofness and the accuracy of the temperature measurement system can be greatly improved, and the flexible foldable dipole antenna device has great significance on the temperature measurement system of the buried cable.
Description
Technical field
The utility model belongs to the cable monitoring technical field, is specifically related to a kind of antenna assembly that is used for the underground cable temp measuring system.
Background technology
Along with the development in city and the construction of intelligent grid, from the needs of the attractive in appearance and electric power system in city, increasing cable adopts buried mode of laying.And cable is positioned at underground piping, in case the relatively difficulty of maintenance that breaks down.The fault that cable takes place is mainly that the heating of cable node causes, therefore the temperature monitoring to underground cable seems more and more important.In the present underground cable thermometric scheme, the antenna that links to each other with temperature probe generally is vertically mounted on the temperature probe, exposes in the cable outside.This antenna mounting means has a lot of deficiencies: temperature probe and antenna expose in air, and the probe measured temperature is influenced by surrounding air, can not reflect the temperature of cable really.Underground cable is laid in underground piping, runs into rainwater weather, and underground piping may be intake, and soaks if temperature probe and antenna are subjected to ponding, and the service behaviour of temperature probe and antenna certainly will be seriously influenced.The patent No. is 200920312411.9, name is called the patent of the surface acoustic wave temperature-sensing system that is used for underground cable, employing is wound on the helical antenna on the cable surrounding layer, the shortcoming of this antenna is that the cable core electric current can produce interference to the magnetic field of helical antenna, influence certainty of measurement, and helical antenna is an omnidirectional antenna, and directionality and gain are not as folded doublet, and transmission range is shorter.These shortcomings have all limited the application of temp measuring system on underground cable greatly.
The utility model content
The utility model is at above-mentioned the deficiencies in the prior art, and a kind of have good directionality and gain, installation is simple, antijamming capability is strong folded doublet device are provided.For this reason, the utility model adopts following technical scheme:
A kind of flexible folding dipole antenna device that is used for the underground cable temp measuring system, comprise folded doublet, the antenna terminal that links to each other with the feeder line of antenna, probe joint, the spacing of two leads of described folded doublet is at 5-10mm, be produced on the flexible base, board that can be fixed in the underground cable outer surface, described probe joint one end and antenna terminal are complementary, and the other end has makes it be connected to the short transmission line of probe.
Compared with prior art, the utlity model has following advantage:
1. make simple, cheap based on the folded doublet of flexible base, board;
2. on antenna printing and the flexible base, board, substrate can be attached at cable cylinder curved surface and install, and is easy for installation;
3. the joint by short transmission line and coupling is connected temperature probe and antenna, connects simple and convenient;
4. temperature probe and antenna all twine protection closely with water blocking tape, have improved the water proofing property of temp measuring system and the accuracy of thermometric.
5. be not subjected to the influence of cable core electric current substantially based on the folded doublet of flexible base, board, working stability;
6. if adopt the wireless and passive temp measuring system, temperature probe and antenna are exempted from energy supply, can continue to use more than 20 years free removal and installation again with after the water blocking tape looping.
Description of drawings
Accompanying drawing 1 is a flexible folding dipole antenna schematic diagram of the present utility model;
Accompanying drawing 2 is a system of the present utility model scheme of installation.
Description of drawings is as follows:
1 flexible base, board, 2 folded doublets, 3 antenna terminals
4 underground cables, 5 temperature probes, 6 short transmission line, 7 probe joints
Embodiment
Make the flexible folding dipole antenna: the size that at first calculates folded doublet.Folded doublet with 433MHz is an example, antenna length L=λ/2=34.6cm, between the two-conductor line apart from d=5～10mm, according to the suitable flexible PCB substrate of the size Selection of antenna.On selected PCB, print folded doublet 2 shown in Figure 1, and draw an antenna terminal 3 at the feeder line end.
Temperature probe 5 and folded doublet 2 are installed: for underground cable 4, the temperature of cable 4 joints must real time and on line monitoring.With underground cable 4 joints is example, and cable 4 transition joints generally adopt cold shrink tube to connect, and are metal screen layer, insulating barrier and watertight composition outside cold shrink tube.Because metal level, the heat conductivility of insulating barrier and watertight composition is all better, therefore temperature probe 5 thermometrics is installed on watertight composition is got final product.The short transmission line 6 that suitable position places temperature probe 5 and will have a joint 3 on the watertight composition of cable 4 joints is drawn.Folded doublet 2 is installed in the scope that short transmission line 6 can connect, and the flexible PCB plate face that is printed with antenna is called the front, and another side becomes the back side.The direction of antenna method line should be towards the direction of the transmitting antenna Polarization match that links to each other with read write line on the PCB front, and make the long direction of folded dipole consistent with the sense of current in the cable 4, determine the installation site and the direction of flexible base, board with this, and along cable 4 surperficial fixing flexible substrates.Fixing method can be coated with insulating cement and stick on the cable 4 at the flexible base, board back side, perhaps utilize insulating tape that substrate is bound.After having determined the position of temperature probe 5 and flexible base, board, connect antenna terminal 3 and probe joint 7, promptly finished being connected of temperature probe 5 and folded doublet 2.After above step is finished, will pop one's head in and antenna winding wrapping sealing, guarantee the water resistance of temperature measuring equipment, installation with adhesive waterproof tape.The scheme of installation of temperature probe 5 and antenna is seen Fig. 2.
Claims (1)
1. flexible folding dipole antenna device that is used for the underground cable temp measuring system, comprise folded doublet, the antenna terminal that links to each other with the feeder line of antenna, probe joint, it is characterized in that, the spacing of two leads of described folded doublet is at 5-10mm, is produced on the flexible base, board that can be fixed in the underground cable outer surface; Described probe joint one end and antenna terminal are complementary, and the other end has makes it be connected to the short transmission line of probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205801003U CN201853803U (en) | 2010-10-27 | 2010-10-27 | Flexible foldable dipole antenna device for temperature measurement system of buried cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205801003U CN201853803U (en) | 2010-10-27 | 2010-10-27 | Flexible foldable dipole antenna device for temperature measurement system of buried cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201853803U true CN201853803U (en) | 2011-06-01 |
Family
ID=44096186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205801003U Expired - Fee Related CN201853803U (en) | 2010-10-27 | 2010-10-27 | Flexible foldable dipole antenna device for temperature measurement system of buried cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201853803U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105990650A (en) * | 2015-02-15 | 2016-10-05 | 泰科电子(上海)有限公司 | Folded dipole antenna, wireless communication module and construction methods of folded dipole antenna and wireless communication module |
| CN106104238A (en) * | 2014-03-04 | 2016-11-09 | 地下***有限公司 | Dynamic wide area the earth hot property and earthly environment temperature measuring system |
-
2010
- 2010-10-27 CN CN2010205801003U patent/CN201853803U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106104238A (en) * | 2014-03-04 | 2016-11-09 | 地下***有限公司 | Dynamic wide area the earth hot property and earthly environment temperature measuring system |
| CN106104238B (en) * | 2014-03-04 | 2018-08-17 | 地下***有限公司 | Dynamic wide area the earth hot property and earthly environment temperature measuring system |
| CN105990650A (en) * | 2015-02-15 | 2016-10-05 | 泰科电子(上海)有限公司 | Folded dipole antenna, wireless communication module and construction methods of folded dipole antenna and wireless communication module |
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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: 20110601 Termination date: 20181027 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |