CN102738578B - Be applied to the dynamic microstrip antenna of TPMS transmitter - Google Patents
Be applied to the dynamic microstrip antenna of TPMS transmitter Download PDFInfo
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- CN102738578B CN102738578B CN201210236578.8A CN201210236578A CN102738578B CN 102738578 B CN102738578 B CN 102738578B CN 201210236578 A CN201210236578 A CN 201210236578A CN 102738578 B CN102738578 B CN 102738578B
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- antenna
- microstrip antenna
- dynamic
- tpms transmitter
- microstrip
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- 239000000758 substrate Substances 0.000 claims abstract description 17
- 238000013461 design Methods 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 238000004088 simulation Methods 0.000 claims description 10
- 230000005672 electromagnetic field Effects 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000005530 etching Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 2
- 238000011056 performance test Methods 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
- B60C23/02—Signalling devices actuated by tyre pressure
- B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
- B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
- B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
- B60C23/0433—Radio signals
- B60C23/0447—Wheel or tyre mounted circuits
- B60C23/0452—Antenna structure, control or arrangement
Abstract
The invention provides a kind of dynamic microstrip antenna being applied to TPMS transmitter, it comprises emitter antenna, this dynamic microstrip antenna being applied to TPMS transmitter also comprises automotive hub, emitter antenna comprises microstrip antenna and substrate, this microstrip antenna is made up of type metal wire, the one side of substrate is microstrip antenna, and the another side of substrate is power supply ground plane metallic layer.The dynamic microstrip antenna being applied to TPMS transmitter of the present invention can farthest avoid metal wheel hub on the impact of antenna performance, save design and produce transmitting antenna cost, and antenna can maximum outside radiant power, consistency of enhancing product performance.
Description
Technical field
The present invention relates to vehicle tire pressure supervisory control system (TPMS), particularly relate to a kind of dynamic microstrip antenna being applied to TPMS transmitter.
Background technology
TPMS transmitter antenna type relatively more conventional at present has spring antenna, inverse-F antenna and small loop antenna, valve antenna.Although spring antenna good directionality, running at high speed, lower pitch can change, and affects antenna performance; Inverse-F antenna better performances but take up room large; Small loop antenna, valve antenna need specialized designs, and cost is high, and if reflector uses these antenna to be arranged on wheel hub as transmitting antenna, the wheel hub of metal and the rotation of wheel hub to the performance impact of emitter antenna very greatly, make the hydraulic performance decline of TPMS.Be in the Chinese patent application of 201010172883.6 at application number, what adopt is PCB antenna, PCB antenna is arranged on tire inflation pressure determining system main printed circuit board, the shortcoming of this antenna is, take up room large, do not regard an entirety as with wheel hub, be subject to the angle impact of wheel hub itself and hub rotation during real work, antenna radiation efficiency, directivity are all unstable.
Summary of the invention
The object of this invention is to provide a kind of dynamic microstrip antenna being applied to TPMS transmitter, it can farthest avoid metal wheel hub on the impact of antenna performance.
Object of the present invention realizes by following technical scheme: the dynamic microstrip antenna being applied to TPMS transmitter, it comprises emitter antenna, it is characterized in that, this dynamic microstrip antenna being applied to TPMS transmitter also comprises automotive hub, described emitter antenna comprises microstrip antenna and substrate, this microstrip antenna is made up of type metal wire, and the one side of shown substrate is described microstrip antenna, and the another side of described substrate is power supply ground plane metallic layer.
Object of the present invention also realizes by following technical measures:
The copper thickness of described microstrip antenna is 35um, and the length of described microstrip antenna is 1/4 wavelength.
Preferably, described microstrip antenna is annular.
Preferably, described microstrip antenna be spring type, the type that circumnutates or snakelike.
Preferably, the material of described substrate is FR-4.
Preferably, by etching process, described microstrip antenna is directly made on the substrate.
Preferably, according to the described 3 D electromagnetic field simulation model being applied to the dynamic microstrip antenna of TPMS transmitter, the design of the match circuit of the dynamic microstrip antenna of TPMS transmitter described in carrying out, is applied to.
Preferably, in the simulation model of described 3 D electromagnetic field, the diameter of described automotive hub is 38cm, and thickness is about 20mm, described automotive hub overhead 12cm.
Preferably, when carrying out the design of described match circuit, getting emitter position and carrying out designing impedance matching at the point of 270 °.
Technical staff is not difficult to find out, the scheme that the combination in any of above-mentioned each preferred version is formed is all a part of the present invention.
The dynamic microstrip antenna being applied to TPMS transmitter in the present invention uses PCB microstrip antenna as reflector transmitting antenna, is namely use printed conductor as transmitting antenna, and transmitting antenna in addition one side is the ground level of power supply.This dynamic microstrip antenna being applied to TPMS transmitter can farthest avoid metal wheel hub on the impact of antenna performance, saves design and produces transmitting antenna cost, and antenna can maximum outside radiant power, consistency of enhancing product performance.The dynamic microstrip antenna being applied to TPMS transmitter in the present invention regards emitter antenna, wheel hub as a dynamic antenna together, set up the 3 D electromagnetic field simulation model of dynamic antenna, and the dynamic antenna parameter that emulation obtains is used for the Match circuits of the reflector of TPMS.Actual road test shows: the TPMS system adopting dynamic antenna to mate is installed onboard and when being kept in motion, the accuracy of its signal power efficiency of transmission and data frame transfer is all very significantly improved.Result shows that adopting the data transmission performance of the TPMS system of dynamic antenna matched design to obtain significantly improves, and illustrates that dynamic microstrip antenna is applicable to tire pressure monitoring system (TPMS) reflector.
Accompanying drawing explanation
Fig. 1 is the structural representation front view being applied to dynamic microstrip antenna one preferred embodiment of TPMS transmitter of the present invention;
Fig. 2 is the schematic diagram of the installation site of reflector on wheel hub;
Fig. 3 is emitter position schematic diagram;
Fig. 4 is the dynamic microstrip antenna power radiation pattern of left rear wheel when 0 ° of position;
Fig. 5 is the dynamic microstrip antenna power radiation pattern of left rear wheel when 90 ° of positions;
Fig. 6 is the dynamic microstrip antenna power radiation pattern of left rear wheel when 180 ° of positions;
Fig. 7 is the dynamic microstrip antenna power radiation pattern of left rear wheel when 270 ° of positions.
Embodiment
For making above and other object of the present invention, feature and advantage can become apparent, cited below particularly go out preferred embodiment, and coordinate institute's accompanying drawings, be described in detail below.
Fig. 1 is the structural representation front view being applied to dynamic microstrip antenna one preferred embodiment of TPMS transmitter of the present invention.This dynamic microstrip antenna being applied to TPMS transmitter is made up of emitter antenna and wheel hub.Emitter antenna is made up of substrate 2 and microstrip antenna 1.Microstrip antenna 1 is made up of type metal wire, and copper thickness is 35um or other thickness, and the length of microstrip antenna 1 is about 1/4 wavelength (173mm), and in order to obtain larger energy, microstrip antenna 1 is as far as possible large around area.The shape of microstrip antenna 1 is ring-shaped, and antenna is power supply ground level in addition, can stop a day alignment wheel hub direction radiation, avoids metal wheel hub to affect the performance such as gain, efficiency, direction of antenna.In one embodiment, the shape of microstrip antenna also can be other shapes, and as spring shape, the shape that circumnutates, snakelike etc., and antenna is power supply ground level in addition, a day alignment wheel hub direction radiation can be stoped, avoid metal wheel hub to affect the performance such as gain, efficiency, direction of antenna.
Preferably the shape of microstrip antenna 1 is ring-shaped because loop aerial compare with other shaped antenna advantage have be can along printed board half of around, large around area, can to the more power of external radiation, namely efficiency is higher.
In Fig. 1, substrate 2 material is FR-4, and antenna is directly produced on thereon by etching process by microstrip antenna, and the other one side of this substrate 2 is power supply ground plane metallic layer.Use PCB microstrip antenna as reflector transmitting antenna, be namely use printed conductor as transmitting antenna, transmitting antenna in addition one side is reference horizontal plane of manufacturing.Be ground level between transmitting antenna and metal wheel hub, be in order to avoid metal wheel hub range transmission antenna is too near like this, have influence on transmitting antenna performance.
Fig. 2 is the schematic diagram of the installation site of reflector on wheel hub, and launcher shell A is arranged on wheel hub 10.Antenna 1 in Fig. 1 and substrate 2 are positioned at launcher shell.
TPMS dynamic antenna is made up of emitter antenna, wheel hub, and using the part of automotive hub as transmitting antenna, the two forms a dynamic antenna, sets up the 3 D electromagnetic field simulation model of dynamic antenna simultaneously.In one embodiment, its 3 D electromagnetic field simulation model is 38cm with hub diameter, and thickness is about 20mm.The CAD graphical configuration that hub portion in dynamic antenna model adopts producer to provide, treats with perfact conductor, does not consider the impact of rubber tyre.Reflector is arranged on wheel hub.Except wheel hub is on except emitter antenna impact, because antenna is overhead highly less than a wavelength, the impact on ground also be can not ignore, and replaces actual ground in model with infinitely great perfact conductor face.Wheel hub overhead 12cm in dynamic antenna.In HFSS, utilize the performance of this model to dynamic antenna to emulate.
After setting up the 3 D electromagnetic field simulation model of dynamic antenna, utilize the parameter of this model emulation dynamic antenna, the parameter obtained is used for the design of antenna-matching circuit.Consider during design that angle that wheel hub turns is to the performance impact of antenna, ensure that antenna can maximum outside radiant power.During dynamic microstrip antenna designs, first antenna structure is analyzed, in HFSS, set up antenna and wheel hub digital-to-analogue, phantom antenna parameter, and mate according to phantom antenna parameter, then carry out actual debugging optimization, finally carry out performance test.
Fig. 3 is emitter position schematic diagram, and along with the change of emitter position, the characteristic of dynamic antenna also will change.Here get as shown in Fig. 4 to Fig. 70 °, 90 °, 180 ° of left rear wheel, 270 ° 4 positions to analyze.
As can be seen from Fig. 4 to Fig. 7, along with the rotation of tire, antenna direction characteristic variations is obvious, illustrates that the rotation of wheel hub is very large on the impact of antenna direction performance.
The excursion of the resistance of dynamic antenna input impedance is 0.1794 ~ 0.2201, the excursion of reactance is 2.5364 ~ 2.7911.Simulation result illustrates that the rotation of wheel hub makes the parameter of antenna be among change, and the change of antenna parameter will affect the performance of antenna.The change of antenna parameter will affect the performance of antenna.The dynamic change of dynamic antenna impedance brings certain difficulty to the design of match circuit, but can find out that part that dynamic antenna impedance variation is larger mainly concentrates on emitter antenna and runs to subaerial interval by Fig. 4 to Fig. 7.In order to rationally take into account the situation of each point, get 270 ° of points here to carry out designing impedance matching.According to this designing impedance matching of dynamic antenna, again make reflector, form new TPMS system with former receiver.
Test TPMS system and new TPMS system carry out actual vehicle-mounted contrast test.The every 10s of setting reflector launches a Frame, follow-on test time 2h, totally 820 frames.During test, automobile travels at expressway surface, and speed is 100km/h.Carry out 2 kinds of contrast tests: reflector adopts dynamic antenna coupling, the Frame that record receiver receives.Reflector adopts static single antenna coupling, the Frame that record receiver receives.The data transmission performance contrast of two kinds of test gained is in table 1.
Table 1 real steering vectors communication efficiency contrast table
| Reflector state | The Frame number of correct reception | Frame accuracy |
| Dynamic antenna mates | 802 | 97.8% |
| Single antenna mates | 467 | 56.9% |
Those skilled in the art are understood that after having read this specification, the dynamic microstrip antenna being applied to TPMS transmitter of the present invention is combined by prior art and forms, although these prior aries all do not describe to all matters, big and small one by one, after having read this specification, those skilled in the art can know its cloud.Describe the combination of above-mentioned prior art in this specification and form each scheme of the present invention, it will be appreciated by those skilled in the art that, the various combinations of these schemes, and the combination of the various piece and/or feature that form these schemes all belongs to the category of the solution of the present invention.Those skilled in the art are obviously understandable that, above-mentioned prior art is combined formation the present invention, and this needs a large amount of creative work to pay, and are the crystallizations of theoretical research for many years and great many of experiments.
Claims (6)
1. be applied to the dynamic microstrip antenna of TPMS transmitter, it comprises emitter antenna, it is characterized in that, this dynamic microstrip antenna being applied to TPMS transmitter also comprises automotive hub, described emitter antenna comprises microstrip antenna and substrate, this microstrip antenna is made up of type metal wire, the one side of shown substrate is described microstrip antenna, the another side of described substrate is power supply ground plane metallic layer, described power supply ground plane metallic layer is near described wheel hub, described power supply ground plane metallic layer and described wheel hub are all as antenna reflective face, when carrying out the design of match circuit, get emitter position and carry out designing impedance matching at the point of 270 °, during dynamic microstrip antenna designs, first antenna structure is analyzed, the 3 D electromagnetic field simulation model of antenna and wheel hub digital-to-analogue is set up in HFSS, phantom antenna parameter, and mate according to phantom antenna parameter, carry out actual debugging optimization again, finally carry out performance test, described microstrip antenna is spring shape, circumnutate shape or snakelike integrative-structure.
2. the dynamic microstrip antenna being applied to TPMS transmitter according to claim 1, is characterized in that, the copper thickness of described microstrip antenna is 35um, and the length of described microstrip antenna is 1/4 wavelength.
3. the dynamic microstrip antenna being applied to TPMS transmitter according to claim 1 and 2, is characterized in that, the material of described substrate is FR-4.
4. the dynamic microstrip antenna being applied to TPMS transmitter according to claim 1 and 2, be is characterized in that, directly made on the substrate by described microstrip antenna by etching process.
5. the dynamic microstrip antenna being applied to TPMS transmitter according to claim 1 and 2, it is characterized in that, according to the described 3 D electromagnetic field simulation model being applied to the dynamic microstrip antenna of TPMS transmitter, described in carrying out, be applied to the design of the match circuit of the dynamic microstrip antenna of TPMS transmitter.
6. the dynamic microstrip antenna being applied to TPMS transmitter according to claim 1 and 2, is characterized in that, in the simulation model of described 3 D electromagnetic field, the diameter of described automotive hub is 38cm, and thickness is about 20mm, described automotive hub overhead 12cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210236578.8A CN102738578B (en) | 2012-06-04 | 2012-07-10 | Be applied to the dynamic microstrip antenna of TPMS transmitter |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210179088.9 | 2012-06-04 | ||
| CN2012101790889 | 2012-06-04 | ||
| CN201210179088 | 2012-06-04 | ||
| CN201210236578.8A CN102738578B (en) | 2012-06-04 | 2012-07-10 | Be applied to the dynamic microstrip antenna of TPMS transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102738578A CN102738578A (en) | 2012-10-17 |
| CN102738578B true CN102738578B (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210236578.8A Active CN102738578B (en) | 2012-06-04 | 2012-07-10 | Be applied to the dynamic microstrip antenna of TPMS transmitter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108574500B (en) * | 2017-03-09 | 2020-08-28 | 深圳市航盛电子股份有限公司 | Matching method of tire pressure monitoring sensor radio frequency antenna based on valve core antenna |
| CN108598688B (en) * | 2018-02-14 | 2020-07-24 | 深圳市道通智能航空技术有限公司 | Unmanned aerial vehicle built-in antenna and unmanned aerial vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6384720B1 (en) * | 2001-03-08 | 2002-05-07 | Trw Inc. | System and method for sensing an operating parameter of a vehicle tire |
| US6933898B2 (en) * | 2002-03-01 | 2005-08-23 | Lear Corporation | Antenna for tire pressure monitoring wheel electronic device |
| JP3930024B2 (en) * | 2004-02-17 | 2007-06-13 | 京セラ株式会社 | Tire pressure information transmitting apparatus and wheel with tire pressure information transmitting apparatus using the same |
| CN1958317A (en) * | 2005-11-04 | 2007-05-09 | 台达电子工业股份有限公司 | Device for monitoring tyre pressure |
| CN2924811Y (en) * | 2006-03-02 | 2007-07-18 | 汉达精密电子(昆山)有限公司 | Printed circuit board antenna |
| CN202749511U (en) * | 2012-06-04 | 2013-02-20 | 北京兴科迪科技有限公司 | Dynamic micro-strip antenna applied to TPMS (Tyre Pressure Monitoring System) emitter |
-
2012
- 2012-07-10 CN CN201210236578.8A patent/CN102738578B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| TPMS Receive Antenna Design for Large Vehicles;Anil Ozdemirli et al;《 General Assembly and Scientific Symposium, 2011 》;20110820;第1-4页 * |
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| CN102738578A (en) | 2012-10-17 |
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Denomination of invention: Dynamic micro-strip antenna applied to TPMS (Tire Pressure Monitor System) transmitter Effective date of registration: 20170110 Granted publication date: 20160323 Pledgee: China Co truction Bank Corp Beijing Zhongguancun branch Pledgor: Beijing Sincode Science & Technology Co., Ltd. Registration number: 2017990000022 |
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Denomination of invention: Dynamic micro-strip antenna applied to TPMS (Tire Pressure Monitor System) transmitter Effective date of registration: 20180329 Granted publication date: 20160323 Pledgee: China Co truction Bank Corp Beijing Zhongguancun branch Pledgor: Beijing Sincode Science & Technology Co., Ltd. Registration number: 2018110000005 |
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Effective date of registration: 20201218 Address after: 225500 south of Fuyuan Road, Luo Tang street, Jiangyan District, Taizhou, Jiangsu, China Patentee after: XINGKEDI TECHNOLOGY (TAIZHOU) Co.,Ltd. Address before: 100091 Beijing city Haidian District Chapeng Road No. 2 Patentee before: BEIJING SINCODE SCIENCE & TECHNOLOGY Co.,Ltd. |
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