CN202513917U - Receiver and RKE/PEPS (remote keyless entry/passive entry passive start) system - Google Patents
Receiver and RKE/PEPS (remote keyless entry/passive entry passive start) system Download PDFInfo
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- CN202513917U CN202513917U CN2012201312986U CN201220131298U CN202513917U CN 202513917 U CN202513917 U CN 202513917U CN 2012201312986 U CN2012201312986 U CN 2012201312986U CN 201220131298 U CN201220131298 U CN 201220131298U CN 202513917 U CN202513917 U CN 202513917U
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Abstract
The utility model provides a receiver and an RKE/PEPS (remote keyless entry/passive entry passive start) system. The receiver comprises a high-frequency receiving module and an MCU (microprogrammed control unit) of the receiver, wherein the high-frequency receiving module is used for receiving a high-frequency signal transmitted by a transmitter of the RKE/PEPS system, and performing filtering and carrier-removing on the received high-frequency signal; and the MCU is connected with the high-frequency receiving module and is used for receiving high-frequency data processed by the high-frequency receiving module through an SCI (serial control interface) and a timing port. The utility model further provides an RKE/PEPS system comprising the receiver. In the process of receiving the high-frequency data by the receiver, because the SCI has the function of reading data through cache, the MCU of the receiver does not participate in the processes of timing, recording and analyzing the data; the occupied MCU system resource for receiving the high-frequency data is greatly reduced, and the MCU load is greatly reduced. Furthermore, as the occupied MCU system resource is greatly reduced, the hardware cost of the MCU is reduced, and the software is simple to realize.
Description
Technical field
The utility model relates to automobile control technology field, relates in particular to a kind of receiver and RKE/PEPS system.
Background technology
Long-range no key gets into passive entering of RKE/ and passive start-up system PEPS, is made up of reflector and receiver usually, and wherein, reflector is a remote-control key, and receiver is the base station.Reflector is responsible for sending high-frequency data; Receiver is installed in the car, and the high frequency receiver module on the receiver is responsible for receiving the signal of reflector emission and the signal that receives is carried out filtering, removes carrier wave; The MCU of receiver decodes the data that obtain wanting to the signal of removing behind the carrier wave.
At present, the high frequency receiver module of receiver sends high-frequency data to the MCU of receiver again through the high-frequency data on the high frequency receiving chip demodulation antenna with the form of high-low level through the data port on the high frequency receiving chip; The MCU of receiver passes through to interrupt resolution data with the timing mouth; Be the data head that needs the high-frequency data of reception at first, if then begin to receive high-frequency data through judging that pwm value determines whether; Otherwise, pending datas such as continuation.The reception of high-frequency data also is to adopt to interrupt realizing; In a single day promptly judging data head is the data head that needs the high-frequency data of reception; Produce to interrupt carrying out the reception of high-frequency data, the process that the receiving course of high-frequency data comes rising edge with trailing edge, judgement pulsewidth, the resolution data of signal acquisition for the interruption of using regularly mouthful.Reception for fear of high-frequency data is interrupted, and is made as the priority of interrupt that receives high-frequency data the highest.
In above-mentioned RKE/PEPS system, in case the MCU of receiver begins to receive high-frequency data, whole procedure all must be waited indefinitely to receive until all high-frequency data and finished, and like this, high-frequency data receives the resource that takies a lot of MCU system.
The utility model content
In view of this, the utility model provides a kind of receiver and RKE/PEPS system, need take the problem of a lot of MCU system resources in order to the reception that solves prior art medium-high frequency data.Its technical scheme is following:
A kind of receiver is applied to the RKE/PEPS system, comprising:
Receive the reflector emission of said RKE/PEPS system high-frequency signal, the high-frequency signal of said reception is carried out filtering, unloads the high frequency receiver module that ripple is handled, with is connected with said high frequency receiver module, through SCI with regularly mouthful receive the MCU of the receiver of the high-frequency data after the said high frequency receiver module processing.
The data that said SCI receives are positioned in the SCI buffer memory, and the high-frequency data that the MCU of said receiver receives is the data in the said SCI buffer memory.
A kind of RKE/PEPS system comprises above-mentioned receiver, also comprises: reflector;
Said reflector comprises: the MCU of the reflector of the TXD pin output high-frequency data through serial communication interface SCI, the oscillating circuit that sends through high-frequency signal with the high-frequency data that is connected with the MCU of said reflector, the MCU of said reflector is exported.
In receiver that the utility model provides and the RKE/PEPS system; The MCU of receiver receives high-frequency data through SCI with the timing mouth simultaneously; In the process that receives high-frequency data, because SCI itself has the function that can pass through the cache read data, so the MCU of receiver need not participate in the time recording of data and the process of parsing; The MCU system resource that the reception of high-frequency data need take significantly reduces, and MCU load simultaneously reduces greatly.In addition, because the MCU system resource that takies significantly reduces, therefore reduced the hardware cost of MCU; Because in the receiving course of high-frequency data, software only need read the data in the SCI buffer memory and get final product, so software is realized simple.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is the embodiment of the utility model, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
The structural representation of the receiver of the RKE/PEPS system that Fig. 1 provides for the utility model embodiment;
The structural representation of the RKE/PEPS system that Fig. 2 provides for the utility model embodiment.
Embodiment
To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides the receiver of a kind of RKE/PEPS system, and Fig. 1 is the structural representation of this receiver, comprising: the MCU12 of high frequency receiver module 11 and the receiver that is connected with high frequency receiver module 11.
Wherein, high frequency receiver module 11 receives the high-frequency signal of the reflector emission of RKE/PEPS system, the high-frequency signal that receives is carried out filtering, unloads the ripple processing, and the high-frequency data after will handling sends to the MCU12 of receiver; The MCU12 of receiver is through SCI and the timing mouthful high-frequency data that reception high frequency receiver module 11 sends.
In the present embodiment, the MCU12 of receiver passes through regularly mouth and catches data head, judges whether the data head of seizure is the data head that needs the high-frequency data of reception, if, then receive high-frequency data through SCI, if deny, then do not receive high-frequency data.The data that SCI receives are positioned in the SCI buffer memory, and the MCU12 of receiver directly reads the high-frequency data that receives through SCI from the SCI buffer memory.
In the present embodiment; The MCU12 of receiver through the process that SCI receives data is: the reception shift register RXSHF of SCI receives the data of the RXD pin of SCI by turn; If the receiving function of SCI enables; The reception shift register RXSHF of SCI gives these transfer of data and receives buffer register RXBUF, and the MCU12 of receiver just can read outside data sent from receiving shift register RXBUF.
The utility model embodiment also provides a kind of RKE/PEPS system, and Fig. 2 is the structural representation of this system, and this system also comprises reflector except comprising above-mentioned receiver.This reflector comprises: the MCU21 of reflector and the oscillating circuit 22 that is connected with the MCU21 of reflector.
Wherein, the MCU21 of reflector is through the TXD pin output high-frequency data of serial communication interface SCI; Oscillating circuit 22 sends the high-frequency data of the MCU21 output of reflector through high-frequency signal.
In the present embodiment; The MCU21 of reflector through the TXD pin output high-frequency data process of SCI is: the transmission data buffer register TXBUF of SCI obtains the data of the needs transmission that is loaded by MCU21; The transmission data buffer register TXBUF of SCI gives transfer of data and sends shift register TXSHF then; If the sending function of SCI enables, send shift register TXSHF with on the data TXD pin that moves on to SCI by turn that receives.
The RKE/PEPS system work process that the utility model embodiment provides is: the MCU21 of reflector is through the TXD pin output high-frequency data of serial communication interface SCI; This high-frequency data inputs to oscillating circuit 22; Oscillating circuit 22 sends high-frequency signal to receiver according to the high-frequency data of the MCU21 output of reflector; The high frequency receiver module 11 of receiver receives the high-frequency signal of oscillating circuit 22 transmissions of reflector; And the high-frequency signal that receives carried out filtering, unloads ripple and handle; High-frequency data after will handling then sends to the MCU12 of receiver through data port, the MCU12 of receiver through the RXD pin of SCI with regularly mouthful receive the high-frequency data that the high frequency receiver module sends over.
In the present embodiment, regularly mouthful be used for checking data head, correct after, SCI begins to receive the data of back.The characteristics of SCI interface are to pass through the cache read data, and therefore, the MCU12 of receiver need not oneself catch and the information of tracer signal such as the height of level, and the cycle etc. are also without resolution data.For example, receive data 0011, if gather with the MCU12 of receiver; Need write down so high level time and low electricity at ordinary times between; And then convert through data transfer rate and to obtain 0011, and if carry out the reception of data through SCI, what read out data in the SCI buffer memory so is exactly 0011.
In receiver that the utility model provides and the RKE/PEPS system; The MCU of reflector is through the TXD pin output high-frequency data of SCI, and this high-frequency data sends through oscillating circuit, and the high frequency receiver module of receiver receives high-frequency signal; High-frequency signal to receiving carries out filtering, unload the MCU that high-frequency data after ripple is handled and will be handled sends to receiver; The MCU of receiver is through SCI and timing mouthful reception high-frequency data, in the process that receives high-frequency data, because SCI itself has the function that can pass through the cache read data; Therefore the MCU of receiver need not participate in the time recording of data and the process of parsing; Therefore, the MCU system resource that the reception of high-frequency data need take significantly reduces, and MCU load simultaneously reduces greatly.In addition, because the MCU system resource that takies significantly reduces, therefore reduced the hardware cost of MCU; Because in the receiving course of high-frequency data, software only need read the data in the SCI buffer memory and get final product, so software is realized simple.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined General Principle can realize under the situation of spirit that does not break away from the utility model or scope in other embodiments among this paper.Therefore, the utility model will can not be restricted to these embodiment shown in this paper, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (3)
1. a receiver is applied to the RKE/PEPS system, it is characterized in that, comprising:
Receive the reflector emission of said RKE/PEPS system high-frequency signal, the high-frequency signal of said reception is carried out filtering, unloads the high frequency receiver module that ripple is handled;
The MCU of the receiver of the high-frequency data after being connected with said high frequency receiver module, handling through SCI and the timing mouthful said high frequency receiver module of reception.
2. receiver according to claim 1 is characterized in that, the data that said SCI receives are positioned in the SCI buffer memory, and the high-frequency data that the MCU of said receiver receives is the data in the said SCI buffer memory.
3. a RKE/PEPS system is characterized in that, comprises like any described receiver in the claim 1 to 2, also comprises: reflector;
Said reflector comprises:
Export the MCU of the reflector of high-frequency data through the TXD pin of serial communication interface SCI;
The oscillating circuit that is connected with the MCU of said reflector, the high-frequency data of the MCU of said reflector output is sent through high-frequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201312986U CN202513917U (en) | 2012-03-30 | 2012-03-30 | Receiver and RKE/PEPS (remote keyless entry/passive entry passive start) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201312986U CN202513917U (en) | 2012-03-30 | 2012-03-30 | Receiver and RKE/PEPS (remote keyless entry/passive entry passive start) system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202513917U true CN202513917U (en) | 2012-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201312986U Expired - Lifetime CN202513917U (en) | 2012-03-30 | 2012-03-30 | Receiver and RKE/PEPS (remote keyless entry/passive entry passive start) system |
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| Country | Link |
|---|---|
| CN (1) | CN202513917U (en) |
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2012
- 2012-03-30 CN CN2012201312986U patent/CN202513917U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 4 / F, building 1, No.14 Jiuxianqiao Road, Chaoyang District, Beijing 100020 Patentee after: Beijing Jingwei Hirain Technologies Co.,Inc. Address before: 100101 Beijing city Chaoyang District Anxiang Beili 11 B block 8 layer Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121031 |
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| CX01 | Expiry of patent term |