CN103761778A - Apparatus for identifying position of automobile remote control key - Google Patents
Apparatus for identifying position of automobile remote control key Download PDFInfo
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- CN103761778A CN103761778A CN201210079412.XA CN201210079412A CN103761778A CN 103761778 A CN103761778 A CN 103761778A CN 201210079412 A CN201210079412 A CN 201210079412A CN 103761778 A CN103761778 A CN 103761778A
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- low
- frequency
- frequency antenna
- control key
- magnetic field
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Abstract
The invention provides an apparatus for identifying position of automobile remote control key, and relates to the field of automobile technology and comprises a remote control key, a control module and a low frequency antenna; the remote control key receives a low frequency vector magnetic field signal and emits a high frequency signal; the control module drives a low frequency antenna by using adjustable output current, and intensity of the low frequency magnetic field emitted by the low frequency antenna changes along with the driving current, and the control module receives a high frequency signal; the low frequency antenna converts the current signal into a magnetic field signal, and compared with the prior art, as long as the low frequency antenna is installed in the vehicle, the signal can cover inside and outer side of the vehicle, thereby reducing installation quantity and wire harness length of the antenna, and the invention has reasonable and simple structure with reduced cost.
Description
Technical field
The present invention relates to automobile technical field, particularly for identifying the device of automobile remote-control key position.
Background technology
In recent years, there are many vehicles to adopt the one-touch key of exempting to start system both at home and abroad, wherein when remote control enters with one-touch start-up performance, need to know that remote-control key is at Che Nei or outside car, traditional scheme meets such demand will at least install the above low-frequency antenna of 6 pair inside and outside car, how to realize this function, but the quantity of low-frequency antenna being less than existing scale, is our current technical issues that need to address.
Summary of the invention
The object of invention is: invent a kind ofly for identifying the device of automobile remote-control key position, based on the locating device of low frequency magnetic field scanning technique, make automobile door opening and engine start more convenient and quicker, improve automobile burglar ability and comfort, lower cost of products.
According to above-mentioned purpose, the technical scheme of invention is: a kind of for identifying the device of automobile remote-control key position, it is characterized in that: it comprises remote-control key, control module and low-frequency antenna;
Described remote-control key receives low frequency Vector Magnetic Field signal, emission of high frequency signals;
Output current adjustable for described control module drives low-frequency antenna, and the low frequency magnetic field intensity drive current of low-frequency antenna transmitting and changing receives high-frequency signal;
Described low-frequency antenna converts field signal to current signal.
Described control module comprises microcontroller, low frequency driving circuit and radio-frequency (RF) receiving circuit, described microprocessor controls low frequency driving drives low-frequency antenna;
Described low-frequency antenna comprises low-frequency antenna one, low-frequency antenna two, low-frequency antenna three and low-frequency antenna four, produces low frequency magnetic field signal;
Described remote-control key comprises low frequency receiving circuit and radio-frequency transmissions circuit, and described low frequency receiving circuit receives and demodulation low frequency magnetic field signal, and described radio-frequency transmissions circuit is modulated at low frequency magnetic field signal data on radio frequency and launches.
By setting the drive current of low frequency driving circuit, fourth officer low-frequency antenna sends field signal in turn, according to the magnetic field intensity of remote-control key feedback, judges the position of remote-control key.
Drive current size in low frequency driving circuit changes according to the adjusting of microcontroller.
Principle of the present invention is: low frequency magnetic field field strength measurement principle realizes wireless location technology.
Compared with prior art, the advantage of invention and effect are: if in car, install low-frequency antenna just can covering car in and outside car, reduced low-frequency antenna installation quantity and wire harness length, simple and reasonable, reduce costs.
Accompanying drawing explanation
Fig. 1 is system chart of the present invention;
Fig. 2 is system schematic of the present invention;
In the drawings,
1, control module; 11, microcontroller; 12, low frequency driving circuit; 13, radio-frequency (RF) receiving circuit; 2, low-frequency antenna; 21, low-frequency antenna one; 22, low-frequency antenna two; 23, low-frequency antenna three; 24, low-frequency antenna four; 3, remote-control key; 31, low frequency receiving circuit; 32, radio-frequency transmissions circuit.
Embodiment
In conjunction with Fig. 1, Fig. 2, for the present invention is for identifying the apparatus structure schematic diagram of automobile remote-control key position, in the drawings, microcontroller 11 in described control module 1, control low frequency driving circuit 12 and drive low-frequency antenna 2, described low-frequency antenna 2 produces low frequency magnetic field signal. and the low frequency receiving circuit 31 in described remote-control key 3 receives and demodulation low frequency magnetic field signal intensity, and in described remote-control key 3, radio-frequency transmissions circuit 32 is modulated at low frequency magnetic field intensity data on radio frequency and launches.
Control module 1, according to receiving the magnetic field intensity that remote-control key 3 sends, judges the position of remote-control key 3.Control the drive current that drives low-frequency channel 12, the magnetic field intensity that can regulate low-frequency antenna 2 to produce, can change magnetic field coverage.
By reference to the accompanying drawings 2, when judging remote-control key, needs whether in car, first set the drive current of low-frequency channel 12 for maximum, fourth officer low-frequency antenna 2 sends field signal in turn, the magnetic field intensity of feeding back according to remote-control key 3, can judge the position of remote-control key, shown in decision logic sees attached list:
The foregoing is only better case study on implementation of the present invention, all equalizations of doing according to patent application the scope of the claims change and modify, and all should belong to the covering scope of invention.
Claims (3)
1. for identifying a device for automobile remote-control key position, it is characterized in that: it comprises remote-control key (3), control module (1) and low-frequency antenna (2); Described remote-control key (3) receives low frequency Vector Magnetic Field signal, emission of high frequency signals; Output current adjustable for described control module (1) drives low-frequency antenna (2), and the low frequency magnetic field intensity drive current of low-frequency antenna (2) transmitting and changing receives high-frequency signal; Described low-frequency antenna (2) converts field signal to current signal.
2. according to claim 1 for identifying the device of automobile remote-control key position, it is characterized in that: described control module (1) comprises microcontroller (11), low frequency driving circuit (12) and radio-frequency (RF) receiving circuit (13), described microcontroller (11) is controlled low frequency driving circuit (12) and is driven low-frequency antenna (2); Described low-frequency antenna (2) comprises low-frequency antenna one (21), low-frequency antenna two (22), low-frequency antenna three (23) and low-frequency antenna four (24), produces low frequency magnetic field signal; Described remote-control key (3) comprises low frequency receiving circuit (31) and radio-frequency transmissions circuit (32), described low frequency receiving circuit (31) receives and demodulation low frequency magnetic field signal, and described radio-frequency transmissions circuit (32) is modulated at low frequency magnetic field signal data on radio frequency and launches.
3. according to claim 2 for identifying the device of automobile remote-control key position, it is characterized in that: by setting the drive current of low frequency driving circuit (12), low-frequency antenna one (21), low-frequency antenna two (22), low-frequency antenna three (23) and low-frequency antenna four (24) in fourth officer low-frequency antenna (2) send field signal in turn, according to the magnetic field intensity of remote-control key (3) feedback, judge the position of remote-control key (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079412.XA CN103761778A (en) | 2012-03-22 | 2012-03-22 | Apparatus for identifying position of automobile remote control key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210079412.XA CN103761778A (en) | 2012-03-22 | 2012-03-22 | Apparatus for identifying position of automobile remote control key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103761778A true CN103761778A (en) | 2014-04-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210079412.XA Pending CN103761778A (en) | 2012-03-22 | 2012-03-22 | Apparatus for identifying position of automobile remote control key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103761778A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105678880A (en) * | 2016-02-06 | 2016-06-15 | 哼哈洛克（北京）科技股份有限公司 | Key position judgment system of electronic lock and electronic lock |
| CN108116320A (en) * | 2017-12-18 | 2018-06-05 | 大陆汽车电子(长春)有限公司 | Rearview mirror Automatic adjustment method and system based on car key |
| CN109318857A (en) * | 2018-09-06 | 2019-02-12 | 北京长城华冠汽车科技股份有限公司 | Vehicle seeks key method and system |
| CN109398308A (en) * | 2017-08-16 | 2019-03-01 | 丰田自动车株式会社 | Vehicle control system |
| CN112884945A (en) * | 2020-12-07 | 2021-06-01 | 武汉格罗夫氢能汽车有限公司 | Fuel cell hydrogen energy automobile remote control key positioning system based on neural network |
-
2012
- 2012-03-22 CN CN201210079412.XA patent/CN103761778A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105678880A (en) * | 2016-02-06 | 2016-06-15 | 哼哈洛克（北京）科技股份有限公司 | Key position judgment system of electronic lock and electronic lock |
| CN109398308A (en) * | 2017-08-16 | 2019-03-01 | 丰田自动车株式会社 | Vehicle control system |
| CN108116320A (en) * | 2017-12-18 | 2018-06-05 | 大陆汽车电子(长春)有限公司 | Rearview mirror Automatic adjustment method and system based on car key |
| CN109318857A (en) * | 2018-09-06 | 2019-02-12 | 北京长城华冠汽车科技股份有限公司 | Vehicle seeks key method and system |
| CN112884945A (en) * | 2020-12-07 | 2021-06-01 | 武汉格罗夫氢能汽车有限公司 | Fuel cell hydrogen energy automobile remote control key positioning system based on neural network |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140430 |