CN104859585A - PEPS (passive entry and passive start) technology-based key positioning method and system - Google Patents
PEPS (passive entry and passive start) technology-based key positioning method and system Download PDFInfo
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- CN104859585A CN104859585A CN201510260100.2A CN201510260100A CN104859585A CN 104859585 A CN104859585 A CN 104859585A CN 201510260100 A CN201510260100 A CN 201510260100A CN 104859585 A CN104859585 A CN 104859585A
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- key
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- antenna
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
- B60R25/248—Electronic key extraction prevention
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
- B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention provides a PEPS (passive entry and passive start) technology-based key positioning method. The method is applied to a key positioning system based on the PEPS technology. The system adopts an antenna for positioning a key. The method comprises the steps that the antenna transmits a signal according to preset requirements; the key receives the signal transmitted by the antenna, and the position of the key is determined according to the received signal on the basis of preset conditions. According to the invention, the key is positioned only by the antenna, whether the key is positioned inside or outside a vehicle is determined, in this way, the cost of the PEPS system is lowered, resources are saved, and the reliability of the product is improved.
Description
Technical field
The application relates to automobile PEPS technical field, particularly a kind of key positioner method and system based on PEPS technology.
Background technology
Along with the development of technology, people enter automobile passive keyless and the key positioner method of start-up technique (PEPS) requires more and more higher.
The key positioner mode of existing automobile PEPS system generally realizes the location of key by 6 or 5 antennas, the number of antennas that this method needs is many, and cost is high, and poor reliability when carrying out key positioner.
Therefore, how actv. carries out the location of automobile key, reduces costs, and the reliability improving location is the current technical issues that need to address of those skilled in the art.
Summary of the invention
Technical problems to be solved in this application are to provide a kind of key positioner method and system based on PEPS technology, and solve the number of antennas needed in prior art larger, cost is high, and the problem of poor reliability when carrying out key positioner.
Its concrete scheme is as follows:
Based on a key positioner method for PEPS technology, the method is applied to the key positioner system based on PEPS technology, and this system adopts an antenna to carry out the location of key, and described method comprises:
Described antenna transmits according to preset requirement;
Described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key.
Above-mentioned method, preferably, described antenna transmits according to preset requirement, comprising:
Described antenna, according to the size of power, launches a low-power level signal and a high-power signal respectively.
Above-mentioned method, preferably, described antenna transmits according to preset requirement, also comprises:
A signal only launched by described antenna, judged the position of key by the setting model preset.
Above-mentioned method, preferably, described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key, comprising:
Described antenna miniwatt launches a signal, described key receives the low-power level signal of described antenna transmission, judge described key whether in car, if not, then described antenna high-power transmitting signal, described key receives the high-power signal of described antenna transmission, judges described key whether outside car, if not, then judge that described key is in inactive area.
Above-mentioned method, preferably, described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key, comprising:
Key receives the signal of described antenna transmission, judge described key whether in the small size threshold range that described antenna is preset, if, then judge that described key is in car, if not, then judge described key whether in the large area threshold range that described antenna is preset, if, then judge that described key is outside car, otherwise judge that described key is in inactive area.
Above-mentioned method, preferably, when judging that described key is in car, judges whether described key meets corresponding key information, if so, then performs the operating order of engine starting or electrical source exchange.
Above-mentioned method, preferably, when judging that described key is when car is outer, judges whether described key meets corresponding key information, if so, then performs the operating order of car door or baggage container unblock unlatching.
Based on a key positioner system for PEPS technology, this system adopts an antenna to carry out the location of key, and this system also comprises:
Transmitter unit, transmits according to preset requirement for described antenna;
Receiving element, receives the signal of described antenna transmission for described key;
Judging unit, for the intensity of the signal according to described reception, according to the condition preset, judges the position of key.
It is a kind of based in the key positioner method of PEPS technology that the application provides, the method is applied to the key positioner system based on PEPS technology, this system adopts an antenna to carry out the location of key, and described method comprises: described antenna transmits according to preset requirement; Described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key.Only need an antenna namely can realize the location of key in the application, judge the position of key at Che Nei still outside car, such mode greatly reduces the cost of PEPS system, has saved resource, improves the reliability of product.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present application, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the diagram of circuit of a kind of key positioner embodiment of the method based on PEPS technology of the application;
Fig. 2 is the structural representation of a kind of key positioner system embodiment based on PEPS technology of the application;
Fig. 3 is the embody rule structural representation of a kind of key positioner system based on PEPS technology of the application.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
With reference to figure 1, show the diagram of circuit of a kind of key positioner embodiment of the method based on PEPS technology of the application, can comprise the following steps:
Step S101: described antenna transmits according to preset requirement.
The method is applied to the key positioner system based on PEPS technology, and this system adopts an antenna to carry out the location of key.
Described antenna transmits according to preset requirement, comprising:
Described antenna, according to the size of power, launches a low-power level signal and a high-power signal respectively.
Described antenna transmits according to preset requirement, also comprises:
A signal only launched by described antenna, judged the position of key by the setting model preset.
Step S102: described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key.
In the application, described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key, comprising:
Described antenna miniwatt launches a signal, described key receives the low-power level signal of described antenna transmission, judge described key whether in car, if not, then described antenna high-power transmitting signal, described key receives the high-power signal of described antenna transmission, judges described key whether outside car, if not, then judge that described key is in inactive area.
Described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key, also comprise:
Key receives the signal of described antenna transmission, judge described key whether in the small size threshold range that described antenna is preset, if, then judge that described key is in car, if not, then judge described key whether in the large area threshold range that described antenna is preset, if, then judge that described key is outside car, otherwise judge that described key is in inactive area.
It is a kind of based in the key positioner method of PEPS technology that the application provides, the method is applied to the key positioner system based on PEPS technology, this system adopts an antenna to carry out the location of key, and described method comprises: described antenna transmits according to preset requirement; Described key receives the signal of described antenna transmission, and according to the signal of described reception, according to the condition preset, judges the position of key.Only need an antenna namely can realize the location of key in the application, judge the position of key at Che Nei still outside car, such mode greatly reduces the cost of PEPS system, has saved resource, improves the reliability of product.
In the application, when judging that described key is in car, judging whether described key meets corresponding key information, if so, then performing the operating order of engine starting or electrical source exchange.
When judging that described key is when car is outer, judges whether described key meets corresponding key information, if so, then perform the operating order of car door or baggage container unblock unlatching.
In the application, when the efficient range of user's carrying keys outside car, and by touch or perform enter request time, the low-frequency antenna electromagnetic signals of PEPS system, key receives this signal and converts RSSI value to according to signal strength, PEPS system can judge the position of key according to the intensity of signal, according to RSSI value, the ID of encrypted message and key determines whether perform car door or baggage container unlock command.
When user's carrying keys enters vehicle, and by when touching or perform engine starting or electrical source exchange request, the low-frequency antenna electromagnetic signals of PEPS system, key receives this signal and converts RSSI value to according to signal strength, PEPS system can judge the position of key according to the intensity of signal, according to RSSI value, the ID of encrypted message and key determines whether perform engine starting or electrical source exchange instruction.
Corresponding with a kind of method provided based on the key positioner embodiment of the method for PEPS technology of above-mentioned the application, see Fig. 2, present invention also provides a kind of key positioner system embodiment based on PEPS technology, in the present embodiment, this system adopts an antenna to carry out the location of key, and this system comprises:
Transmitter unit 201, transmits according to preset requirement for described antenna.
Receiving element 202, receives the signal of described antenna transmission for described key.
Judging unit 203, for the intensity of the signal according to described reception, according to the condition preset, judges the position of key.
With reference to figure 3, show the embody rule structural representation of a kind of key positioner system based on PEPS technology in specific implementation process in the application, comprising: the key of automobile PEPS system and the controller of automobile PEPS system.
In the key of automobile PEPS system:
Low frequency 3D antenna, for receiving the low frequency signal of PEPS controller or the antitheft coil transmissions of Immobilization.
Low frequency reception circuit, for the treatment of the low frequency signal that 3D antenna receives.
Standby mode circuit, engine starting pattern when not having an electricity for key battery, this circuit comprises the MCU that low frequency accepts circuit and key.
The MCU of key, for central process unit and cryptanalysis unit.
RF transmission circuit, for emission of high frequency signals to PEPS controller, comprises encrypted message and No. ID.
In the controller of automobile PEPS system:
RF acceptor circuit, for receiving the high-frequency signal that key is launched.
Low frequencies circuit, for launching low frequency signal to key.
Hardware control circuit, for controlling body electric system electronic machine.
Central process unit, for the treatment of various data and information.
Holder, for storing application program and data.
One-touch startup button, switches for start the engine and Vehicle Power.
The antitheft coil of Immobilization, to carry out the accreditation of standby mode to key for launching low frequency signal.
The antitheft coil driver of Immobilization, for generation of low-frequency modulation signal, the low frequency signal of key during demodulation standby mode.
Communication interface wherein itself comprises CAN, LIN.
It should be noted that, each embodiment in this specification sheets all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For device class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
For convenience of description, various unit is divided into describe respectively with function when describing above device.Certainly, the function of each unit can be realized in same or multiple software and/or hardware when implementing the application.
As seen through the above description of the embodiments, those skilled in the art can be well understood to the mode that the application can add required general hardware platform by software and realizes.Based on such understanding, the technical scheme of the application can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product can be stored in storage medium, as ROM/RAM, magnetic disc, CD etc., comprising some instructions in order to make a computer equipment (can be Personal Computer, server, or the network equipment etc.) perform the method described in some part of each embodiment of the application or embodiment.
Above a kind of key positioner method and system based on PEPS technology that the application provides are described in detail, apply specific case herein to set forth the principle of the application and embodiment, the explanation of above embodiment is just for helping method and the core concept thereof of understanding the application; Meanwhile, for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.
Claims (8)
1. based on a key positioner method for PEPS technology, it is characterized in that, the method is applied to the key positioner system based on PEPS technology, and this system adopts an antenna to carry out the location of key, and described method comprises:
Described antenna transmits according to preset requirement;
Described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key.
2. method according to claim 1, is characterized in that, described antenna transmits according to preset requirement, comprising:
Described antenna, according to the size of power, launches a low-power level signal and a high-power signal respectively.
3. method according to claim 1, is characterized in that, described antenna transmits according to preset requirement, also comprises:
A signal only launched by described antenna, judged the position of key by the setting model preset.
4. method according to claim 2, is characterized in that, described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key, comprising:
Described antenna miniwatt launches a signal, described key receives the low-power level signal of described antenna transmission, judge described key whether in car, if not, then described antenna high-power transmitting signal, described key receives the high-power signal of described antenna transmission, judges described key whether outside car, if not, then judge that described key is in inactive area.
5. method according to claim 3, is characterized in that, described key receives the signal of described antenna transmission, and the intensity of signal according to described reception, according to the condition preset, judge the position of key, comprising:
Key receives the signal of described antenna transmission, judge described key whether in the small size threshold range that described antenna is preset, if, then judge that described key is in car, if not, then judge described key whether in the large area threshold range that described antenna is preset, if, then judge that described key is outside car, otherwise judge that described key is in inactive area.
6. the method according to claim 1,4 or 5, is characterized in that, when judging that described key is in car, judges whether described key meets corresponding key information, if so, then performs the operating order of engine starting or electrical source exchange.
7. the method according to claim 1,4 or 5, is characterized in that, when judging that described key is when car is outer, judges whether described key meets corresponding key information, if so, then performs the operating order of car door or baggage container unblock unlatching.
8. based on a key positioner system for PEPS technology, it is characterized in that, this system adopts an antenna to carry out the location of key, and this system also comprises:
Transmitter unit, transmits according to preset requirement for described antenna;
Receiving element, receives the signal of described antenna transmission for described key;
Judging unit, for the intensity of the signal according to described reception, according to the condition preset, judges the position of key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260100.2A CN104859585A (en) | 2015-05-20 | 2015-05-20 | PEPS (passive entry and passive start) technology-based key positioning method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510260100.2A CN104859585A (en) | 2015-05-20 | 2015-05-20 | PEPS (passive entry and passive start) technology-based key positioning method and system |
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| CN104859585A true CN104859585A (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510260100.2A Pending CN104859585A (en) | 2015-05-20 | 2015-05-20 | PEPS (passive entry and passive start) technology-based key positioning method and system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107627974A (en) * | 2016-07-19 | 2018-01-26 | 上汽通用汽车有限公司 | Automobile-used wireless key detecting system and vehicle |
| CN108307294A (en) * | 2016-09-22 | 2018-07-20 | 福特全球技术公司 | For determining system and method for the mobile device relative to the position in compartment |
| CN108839635A (en) * | 2018-06-01 | 2018-11-20 | 浙江吉利汽车研究院有限公司 | Vehicle unblocks lock control method, apparatus and system |
| CN111865443A (en) * | 2020-07-27 | 2020-10-30 | 延锋伟世通汽车电子有限公司 | Calibrating device suitable for car intelligence does not have key access system |
| CN113873422A (en) * | 2020-06-12 | 2021-12-31 | 上海汽车集团股份有限公司 | Method and device for positioning key of PEPS (Passive entry Passive Start) system |
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| CN113873422A (en) * | 2020-06-12 | 2021-12-31 | 上海汽车集团股份有限公司 | Method and device for positioning key of PEPS (Passive entry Passive Start) system |
| CN113873422B (en) * | 2020-06-12 | 2024-01-26 | 上海汽车集团股份有限公司 | PEPS system key positioning method and device |
| CN111865443A (en) * | 2020-07-27 | 2020-10-30 | 延锋伟世通汽车电子有限公司 | Calibrating device suitable for car intelligence does not have key access system |
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