CN103448675A - PEPS (Passive Entry & Passive Start) intelligent key and control method thereof - Google Patents
PEPS (Passive Entry & Passive Start) intelligent key and control method thereof Download PDFInfo
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- CN103448675A CN103448675A CN 201310405698 CN201310405698A CN103448675A CN 103448675 A CN103448675 A CN 103448675A CN 201310405698 CN201310405698 CN 201310405698 CN 201310405698 A CN201310405698 A CN 201310405698A CN 103448675 A CN103448675 A CN 103448675A
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Abstract
The invention provides a PEPS (Passive Entry & Passive Start) intelligent key and a control method thereof. The PEPS intelligent key comprises a low-frequency receiver, a microcontroller and a high-frequency emitter, wherein the high-frequency emitter comprises an FSK (Frequency-Shift Keying) mode and an ASK (Amplitude-Shift Keying) mode, and the microcontroller is communicated with the low-frequency receiver and the high-frequency emitter. The intelligent key provided by the invention can emit FSK high-frequency signals and ASK high-frequency signals, the high-frequency emitter is controlled to emit high-frequency signals in different modes under the control of different inputs, in general, telecommunication is easy to interfere, therefore, during input operation by a user, the anti-interference capability of the signals can be improved by emitting the high-frequency signals in the FSK mode; when keyless entry and button start operation are executed, the operation distance is within 2-3m in general, the high-frequency signals in the ASK mode are emitted, and the aims of reducing power consumption and prolonging the service life of a battery can be achieved.
Description
Technical field
The present invention relates to a kind of PEPS (Passive Entry & Passive Start, passive type enters without key and starts system without key) Intelligent key and control method thereof, belong to the PEPS technical field.
Background technology
Now, the PEPS Intelligent key has been widely used in various types of vehicles, the PEPS intelligent key system comprises that cell on wheels device and portable vehicle remote control equipment (RCE) are Intelligent key, and Intelligent key is used 315MHz and two kinds of high-frequency emission frequencies of 434MHz, and ranging coverage is as long as fifty meters to 100 meters.Domestic main use 315MHz frequency, so there is the problem of co-channel interference in current PEPS Intelligent key, the place intensive at vehicle is particularly evident.When two Intelligent key are launched the signal of same frequency at one time, thereby can cause each other to disturb, cause cell on wheels equipment reception signal to be made mistakes, and then cause the remote manipulation failure.The on-off keying pattern) and FSK (Frequency-Shift keying, frequency shift keying pattern) high-frequency signal emission has two kinds of pattern: ASK, and (Amplitude-Shift Keying, amplitude shift keying claim again OOK:.Under square one, the emission power consumption that adopts ASK pattern Intelligent key is half of employing FSK pattern Intelligent key; Adopt the Intelligent key of FSK pattern to possess extremely strong antijamming capability.Therefore use the Intelligent key of ASK pattern low in energy consumption, but a little less than antijamming capability; Use the Intelligent key of FSK pattern, antijamming capability is strong, but power dissipation ratio is higher, and battery is short.
Summary of the invention
Can not have the deficiency of high anti-jamming capacity and low-power consumption for current Intelligent key high-frequency signal emission simultaneously concurrently, the invention provides a kind of PEPS Intelligent key and control method thereof, it has the advantage of high anti-jamming capacity and low-power consumption concurrently simultaneously.
Technical scheme:
A kind of PEPS Intelligent key, comprise low frequency receptor, microcontroller and HF transmitter, and described HF transmitter comprises FSK pattern and ASK pattern, described microcontroller and described low frequency receptor and the communication connection of described HF transmitter.
A kind of PEPS Intelligent key, comprise low frequency receptor and microcontroller, also comprise the first HF transmitter and the second HF transmitter, described microcontroller and described low frequency receptor, described the first HF transmitter and described the second HF transmitter communication connection, described the first HF transmitter adopts the FSK pattern, and described the second HF transmitter adopts the ASK pattern.
The present invention also provides a kind of system that comprises above-mentioned PEPS Intelligent key, comprise cell on wheels equipment, described cell on wheels equipment comprises low frequencies device, controller and high-frequency receiver, described controller and described low frequencies device and the communication connection of described high-frequency receiver, described high-frequency receiver can receive the high-frequency signal of FSK pattern and ASK pattern.
The present invention also provides a kind of control method of above-mentioned PEPS Intelligent key:
First: when described microcontroller receives user's input, control the high-frequency signal of described Intelligent key emission FSK pattern;
Second: when described microcontroller receives the low frequency signal that cell on wheels equipment sends, control the high-frequency signal of described Intelligent key emission ASK pattern.
Beneficial effect:
Because Intelligent key provided by the invention can be launched FSK and two kinds of high-frequency signals of ASK, by control the high-frequency signal of HF transmitter emission different mode under the difference input, usually long haul is easily disturbed, therefore during user's input operation, the high-frequency signal of emission FSK pattern, the antijamming capability of raising signal; And carrying out PKE (Passive Keyless Entry), without key, enter and during a key start-up operation, in operating distance common 2～3, the high-frequency signal of emission ASK pattern, reach the reduction power consumption, extends the purpose of battery.
The accompanying drawing explanation
The intelligent key system principle schematic that Fig. 1 is first embodiment of the invention;
The principle schematic of the Intelligent key that Fig. 2 is second embodiment of the invention;
The control flow chart that Fig. 3 is control method of the present invention.
The specific embodiment
As shown in Figure 1, first embodiment of the invention is:
A kind of PEPS Intelligent key, comprise low frequency receptor 1, microcontroller 2 and HF transmitter 3, and described HF transmitter 3 comprises FSK pattern and ASK pattern, described microcontroller 2 and described low frequency receptor 1 and 3 communication connections of described HF transmitter.
Above-mentioned PEPS Intelligent key and cell on wheels equipment 6 form a kind of PEPS intelligent key system, described cell on wheels equipment 6 comprises low frequencies device 7, controller 8 and high-frequency receiver 9, described controller 8 and described low frequencies device 7 and 9 communication connections of described high-frequency receiver, described high-frequency receiver 9 can receive the high-frequency signal of FSK pattern and ASK pattern.
As shown in Figure 2, second embodiment of the invention is:
A kind of PEPS Intelligent key, comprise low frequency receptor 1 and microcontroller 2, also comprise the first HF transmitter 4 and the second HF transmitter 5, described microcontroller 2 and described low frequency receptor 1, described the first HF transmitter 4 and described the second HF transmitter 5 communication connections, described the first HF transmitter 4 adopts the FSK pattern, and described the second HF transmitter 5 adopts the ASK pattern.
As shown in 3 figure: the present invention also provides a kind of control method of controlling above-mentioned two kinds of PEPS Intelligent key:
First: when described microcontroller 2 receives user's input, control the high-frequency signal of described Intelligent key emission FSK pattern;
Second: when described microcontroller 2 receives the low frequency signal that cell on wheels equipment sends, control the high-frequency signal of described Intelligent key emission ASK pattern.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.
Claims (4)
1. a PEPS Intelligent key, comprise low frequency receptor (1), microcontroller (2) and HF transmitter (3), it is characterized in that: described HF transmitter (3) comprises FSK pattern and ASK pattern, described microcontroller (2) and described low frequency receptor (1) and described HF transmitter (3) communication connection.
2. a kind of PEPS Intelligent key according to claim 1, it is characterized in that: also comprise the first HF transmitter (4) and the second HF transmitter (5), described microcontroller (2) and described low frequency receptor (1), described the first HF transmitter (4) and described the second HF transmitter (5) communication connection, described the first HF transmitter (4) adopts the FSK pattern, and described the second HF transmitter (5) adopts the ASK pattern.
3. a kind of PEPS Intelligent key according to claim 1, it is characterized in that: also comprise cell on wheels equipment (6), described cell on wheels equipment (6) comprises low frequencies device (7), controller (8) and high-frequency receiver (9), described controller (8) and described low frequencies device (7) and described high-frequency receiver (9) communication connection, described high-frequency receiver (9) can receive the high-frequency signal of FSK pattern and ASK pattern.
4. the control method of the Intelligent key of the PEPS as claim 1 or 2 is characterized in that:
First: when described microcontroller (2) receives user's input, control the high-frequency signal of described Intelligent key emission FSK pattern;
Second: when described microcontroller (2) receives the low frequency signal that cell on wheels equipment sends, control the high-frequency signal of described Intelligent key emission ASK pattern.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310405698 CN103448675A (en) | 2013-07-01 | 2013-09-09 | PEPS (Passive Entry & Passive Start) intelligent key and control method thereof |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310270075.7 | 2013-07-01 | ||
| CN201310270075 | 2013-07-01 | ||
| CN 201310405698 CN103448675A (en) | 2013-07-01 | 2013-09-09 | PEPS (Passive Entry & Passive Start) intelligent key and control method thereof |
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| CN103448675A true CN103448675A (en) | 2013-12-18 |
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| CN 201310405698 Pending CN103448675A (en) | 2013-07-01 | 2013-09-09 | PEPS (Passive Entry & Passive Start) intelligent key and control method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049631A (en) * | 2014-07-07 | 2014-09-17 | 北京经纬恒润科技有限公司 | Signal output method and device |
| CN104494563A (en) * | 2014-12-24 | 2015-04-08 | 马瑞利汽车电子(广州)有限公司 | Automobile keyless entry and start system and automobile keyless entry and start method based on communication bus |
| CN108594685A (en) * | 2018-04-27 | 2018-09-28 | 东力莱（北京）智能安防科技有限公司 | Vehicle remote intelligent remote control system |
| CN109584406A (en) * | 2017-09-28 | 2019-04-05 | 比亚迪股份有限公司 | The communication control method of vehicle and car key, device and vehicle |
| CN111361526A (en) * | 2018-12-25 | 2020-07-03 | 法雷奥舒适驾驶助手公司 | Keyless entry and start system, communication method thereof, and vehicle comprising keyless entry and start system |
-
2013
- 2013-09-09 CN CN 201310405698 patent/CN103448675A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104049631A (en) * | 2014-07-07 | 2014-09-17 | 北京经纬恒润科技有限公司 | Signal output method and device |
| CN104049631B (en) * | 2014-07-07 | 2017-02-01 | 北京经纬恒润科技有限公司 | Signal output method and device |
| CN104494563A (en) * | 2014-12-24 | 2015-04-08 | 马瑞利汽车电子(广州)有限公司 | Automobile keyless entry and start system and automobile keyless entry and start method based on communication bus |
| CN109584406A (en) * | 2017-09-28 | 2019-04-05 | 比亚迪股份有限公司 | The communication control method of vehicle and car key, device and vehicle |
| CN108594685A (en) * | 2018-04-27 | 2018-09-28 | 东力莱（北京）智能安防科技有限公司 | Vehicle remote intelligent remote control system |
| CN111361526A (en) * | 2018-12-25 | 2020-07-03 | 法雷奥舒适驾驶助手公司 | Keyless entry and start system, communication method thereof, and vehicle comprising keyless entry and start system |
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Application publication date: 20131218 |