CN202810349U - Induction device of automobile door handle and passive entry passive start (PEPS) system - Google Patents
Induction device of automobile door handle and passive entry passive start (PEPS) system Download PDFInfo
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- CN202810349U CN202810349U CN 201220318828 CN201220318828U CN202810349U CN 202810349 U CN202810349 U CN 202810349U CN 201220318828 CN201220318828 CN 201220318828 CN 201220318828 U CN201220318828 U CN 201220318828U CN 202810349 U CN202810349 U CN 202810349U
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- door handle
- automobile door
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- 230000006698 induction Effects 0.000 title claims abstract description 30
- 230000005059 dormancy Effects 0.000 claims abstract description 25
- 230000003287 optical effect Effects 0.000 claims abstract description 10
- 230000000284 resting effect Effects 0.000 claims description 25
- 238000009434 installation Methods 0.000 claims description 24
- 208000035139 partial with pericentral spikes epilepsy Diseases 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 description 5
- 230000007958 sleep Effects 0.000 description 3
- 238000007726 management method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000037007 arousal Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
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Abstract
The utility model discloses an induction device of an automobile door handle, which is applied to a passive entry passive start (PEPS) system. The induction device of the automobile door handle comprises a receiver, the automobile door handle, an optical sensor, a central controller and a door lock actuating mechanism, wherein the receiver comprises a microprocessor and a high-frequency receiving module. The induction device of the automobile door handle also comprises a state judgment module and a dormancy wake-up control module, wherein the state judgment module is used for judging whether the microprocessor is in a work preparation state or not; and the dormancy wake-up control module is used for controlling the microprocessor to be in a wake-up state if the state judgment module judges that the microprocessor is in the work preparation state or controlling the microprocessor to maintain a dormancy state if the state judgment module judges that the microprocessor is not in the work preparation state. The utility model also discloses the PEPS system which comprises an emitter and the induction device of the automobile door handle. According to the utility model, the duration of the microprocessor of the receiver of the induction device of the automobile door handle in the wake-up state is shortened to the maximum degree, and the quiescent current of the PEPS system is reduced, so that the power consumption of the PEPS system is reduced.
Description
Technical field
The utility model relates to the automobile technical field of security and protection, relates in particular to a kind of automobile door handle induction installation and PEPS system.
Background technology
Enter start-up system (Passive Entry﹠amp without key; Passive Start, PEPS) usually formed by transmitter and automobile door handle induction installation, wherein the automobile door handle induction installation comprises receiver, automobile door handle, optical pickocff, central controller and gate lock actuator, receiver comprises high frequency receiver module and microprocessor (Micro Control Unit, MCU).Transmitter is responsible for sending high-frequency data, the automobile door handle induction installation is installed in the car, the high frequency receiver module of receiver is responsible for receiving the signal of transmitter emission and the signal that receives is carried out filtering, remove carrier wave, the MCU of receiver decodes the data that obtain wanting to the signal of removing behind the carrier wave.
Be to reduce system power dissipation, the sleep management mode that existing PEPS system adopts dormant and awakening to hocket usually, namely a dormant and awakening cycle is 100ms, wherein 10ms is in wake-up states.When being in resting state, various parts all quits work, can not the executing data reception etc. task, this moment system quiescent current be the electric current of 1mA(MCU and high frequency receiver module be equal to or close to zero), least in power-consuming; When system is in wake-up states, the receiver electric current be 20mA(wherein, MCU is 15mA, the high frequency receiver module is 5mA), can be by tasks such as serial communication interface SCI executing data receptions.So the quiescent current of receiving terminal is (1*90+20*10)/100=2.9mA.
The shortcoming of above-mentioned PEPS system is: when system is in wake-up states, if MCU never executes the task, but still be in wake-up states, namely need to provide for it electric current of 15mA, caused undoubtedly unnecessary power consumption, increased system power dissipation.
The utility model content
In view of this, the utility model provides a kind of automobile door handle induction installation and PEPS system, to solve the existing large problem of PEPS system power dissipation.
On the one hand, the utility model provides a kind of automobile door handle induction installation, be applied to the PEPS system, comprise receiver, automobile door handle, optical pickocff, central controller and gate lock actuator, wherein optical pickocff is arranged on the described automobile door handle, and be connected with gate lock actuator with receiver respectively, described receiver is connected and comprises microprocessor and high frequency receiver module with central controller, described receiver also comprises:
Be used for judging whether described microprocessor enters the condition judgment module of readiness for operation,
Be used for judging in described condition judgment module and control described microprocessor when described microprocessor enters readiness for operation and enter wake-up states, otherwise control the dormancy awakening control module that described microprocessor keeps resting state.
Preferably, described condition judgment module comprises:
Be used for judging whether the dormancy time of described microprocessor reaches the first judging unit of the first Preset Time.
Preferably, described dormancy awakening control module comprises:
Be used for controlling the first control module that described microprocessor enters dormancy or wake-up states according to the judged result of described condition judgment module;
Be used for after described the first control module wakes described microprocessor up, controlling the second control module that described high frequency receiver module enters wake-up states;
Be used for after described the second control module wakes described high frequency receiver module up, controlling the 3rd control module that described microcontroller enters resting state.
Preferably, described condition judgment module also comprises:
Be used for after described the second control module wakes described high frequency receiver module up, judging whether the wakeup time of described high frequency receiver module reaches the second judging unit of the second Preset Time;
Described dormancy awakening control module also comprises:
Be used for when described the second judgment unit judges goes out to reach described the second Preset Time and described microprocessor and is in resting state, controlling the 4th control module that described high frequency receiver module enters resting state.
Preferably, the data format of the high-frequency data that receives of described high frequency receiver module comprises and wakes head, normal data head and SCI data bit up.
Preferably, described condition judgment module also comprises:
Be used for judging whether the high-frequency data that the high frequency receiver module after being waken up receives has the 3rd judging unit that wakes head up.
Preferably, described dormancy awakening control module also comprises:
Be used for when described the 3rd judgment unit judges goes out to wake up, controlling described microprocessor and entering wake-up states, otherwise to enter the 5th control module of resting state.
Preferably, described condition judgment module also comprises:
Be used for after described the 5th control module wakes described microprocessor up, whether the task of judging described microprocessor complete the 4th judging unit;
Described dormancy awakening module also comprises:
When finishing for going out on missions when described the 4th judgment unit judges, control the 6th control module that described microprocessor and high frequency receiver module enter resting state.
Preferably, described the 5th control module wakes described microprocessor up by the spare bits wake-up mode.
On the other hand, the utility model also provides a kind of PEPS system, comprises foregoing automobile door handle induction installation, also comprises transmitter, and described transmitter comprises:
Export the micro-control unit of high-frequency data by the TXD pin of serial communication interface SCI;
The oscillating circuit that the high-frequency data that is connected with the micro-control unit of described transmitter, described micro-control unit is exported sends by high-frequency signal.
Can find out from above-mentioned technical scheme, when the microprocessor of receiver enters readiness for operation in the utility model has realized that and if only if the automobile door handle induction installation, just make it enter wake-up states, namely work as microprocessor without task, when not needing work, can keep resting state always, thereby shorten to greatest extent microprocessor and be in the duration of wake-up states, reduce the quiescent current of PEPS system, and then reduced system power dissipation.
Description of drawings
The structural representation of the automobile door handle induction installation that Fig. 1 provides for the utility model embodiment;
The structural representation of the receiver that Fig. 2 provides for the utility model embodiment;
The structural representation of the PEPS system that Fig. 3 provides for the utility model embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, 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 obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The structural representation of the automobile door handle induction installation that Fig. 1 provides for the utility model embodiment, wherein, the automobile door handle induction installation is applied to the PEPS system.By shown in Figure 1, the automobile door handle induction installation comprises receiver 1, automobile door handle 2, optical pickocff 3, central controller 4 and gate lock actuator 5, wherein optical pickocff 3 is arranged on the automobile door handle 2, and are connected with gate lock actuator with receiver 1 respectively and are connected, receiver 1 is connected with central controller 4.Central controller 4 is carried out the action of opening car door according to the data of receiver 1 and the information feedback control door lock actuator 5 of optical pickocff 3.
Concrete, the automobile door handle 2 described in the utility model, optical pickocff 3, central controller 4 and gate lock actuator 5 all adopt known solution, and those skilled in the art all know, do not repeat them here.
As shown in Figure 2, receiver 1 comprises high frequency receiver module 10, MCU 11, condition judgment module 12 and dormancy awakening control module 13.
Wherein, condition judgment module 12 is used for judging whether MCU 11 enters readiness for operation.
Dormancy awakening control module 13 is used for that control MCU 11 enters wake-up states when condition judgment module 12 is judged MCU 11 and entered readiness for operation, otherwise control MCU 11 keeps resting states.
Can find out that from above-mentioned technical scheme the automobile door handle induction installation that the utility model embodiment provides has realized that and if only if when MCU 11 enters readiness for operation, just makes it enter wake-up states; Namely work as MCU 11 without task, when not needing work, it always remains on resting state.With respect to prior art, automobile door handle induction installation that the utility model embodiment provides is shortening MCU 11 and is being in the duration of wake-up states to greatest extent, reduce unnecessary power consumption, reduced the static system electric current, and then reduced system power dissipation.
In a kind of embodiment of the present utility model, condition judgment module 12 comprises:
The first judging unit is used for judging whether the dormancy time of MCU 11 reaches the first Preset Time, thereby reaches the purpose of judging whether MCU 11 enters readiness for operation.In case namely MCU 11 reaches the first Preset Time, then control MCU 11 and enter wake-up states; Otherwise control MCU 11 keeps resting state.
Particularly, above-mentioned the first Preset Time can be set according to actual needs, 90ms for example, and in this 90ms, MCU 11 and high frequency receiver module 10 all are in resting state, and its electric current equals or close to zero; System is in resting state, and quiescent current is 1mA; In case the dormancy time of MCU 11 reaches 90ms, system just wakes MCU 11 up, and the electric current of MCU 11 reaches 15mA.
In another kind of embodiment of the present utility model, described dormancy awakening control module 13 comprises:
The first control module is used for entering dormancy or wake-up states according to the judged result control MCU 11 of condition judgment module 12.
The second control module is used for after described the first control module wakes MCU 11 up, and control high frequency receiver module 10 enters wake-up states.
The 3rd control module is used for after described the second control module wakes high frequency receiver module 10 up, and control MCU 11 enters resting state.
Particularly, MCU 11 is because of after reaching described the first Preset Time and entering wake-up states, and dormancy awakening control module 13 begins to wake up high frequency receiver module 10, and afterwards, control MCU 11 reenters resting state.After high frequency receiver module 10 is waken up, can receive high-frequency data, the high-frequency data of not finding its reception be MCU 11 to receive data the time, MCU 11 still temporarily is in resting state, to reduce power consumption, reduces system power dissipation.
In another embodiment of the present utility model, condition judgment module 12 also comprises:
The second judging unit is used for judging whether the wakeup time of high frequency receiver module 10 reaches the second Preset Time after described the second control module wakes high frequency receiver module 10 up.
In the present embodiment, dormancy awakening control module 13 also comprises:
The 4th control module is used for controlling high frequency receiver module 10 and entering resting state when described the second judgment unit judges goes out to reach described the second Preset Time and MCU 11 and is in resting state.
Above-mentioned the second Preset Time is specially in the situation of predefined high-frequency data not needing to receive, and high frequency receiver module 10 keeps the maximum duration of wake-up states.The utility model above-described embodiment is by detecting the wakeup time of high frequency receiver module 10, when this wakeup time reaches this second Preset Time, and it (is that MCU 11 does not work that MCU 11 is in resting state, namely do not need the high-frequency data that receives yet) time, then control high frequency receiver module 10 and again enter resting state.With respect to prior art medium-high frequency receiver module by fixing cycle dormancy or wake up, the automobile door handle induction installation that the utility model provides has been avoided need not to receive in the situation of high-frequency data, the high frequency receiver module but is in the phenomenon of wake-up states always, reduce the power consumption of system, reduced system power dissipation.
In another embodiment of the present utility model, the data format of the high-frequency data that high frequency receiver module 10 receives comprises and wakes head, normal data head and SCI data bit up.
Further, condition judgment module 12 also comprises:
The 3rd judging unit is used for judging whether the high-frequency data that the high frequency receiver module 10 after being waken up receives wakes head up.
In the present embodiment, dormancy awakening control module 13 also comprises:
The 5th control module is used for controlling MCU11 and entering wake-up states, otherwise to enter resting state when described the 3rd judgment unit judges goes out to wake up.Wherein, described the 5th control module can wake MCU 11 up by the spare bits wake-up mode.The spare bits arousal function of serial communication interface SCI is prior art, and those skilled in the art should know how to wake microprocessor up by the spare bits wake-up mode, do not repeat them here.
Particularly, the data format of the high-frequency data that high frequency receiver module 10 receives is the SCI form, namely comprises and wakes head, normal data head and SCI data bit three parts up.Wherein, wake head up and be equivalent to the flag bit of SCI data format, so the high-frequency data that wakes head up is only arranged, namely the data of SCI form are only the data that need reception, just can wake MCU 11 up, thereby save the power consumption of MCU 11.In addition, the SCI data bit comprises several SCI Frames, and each SCI Frame comprises the body position of rest of start bit, the data in 8 cycles and 1 cycle level"1" of 1 cycle level "0".The high frequency receiver module 10 that is in wake-up states receives high-frequency data, in case judgement obtains waking head up in the above-mentioned high-frequency data, then controls MCU 11 and enters wake-up states, and with tasks such as executing data receptions, otherwise MCU 11 keeps resting states.
In another embodiment of the present utility model, condition judgment module 12 also comprises:
The 4th judging unit is used for judging whether the task of MCU 11 is complete after described the 5th control module wakes MCU 11 up.
In the present embodiment, dormancy awakening control module 13 also comprises:
The 6th control module, when finishing for going out on missions when described the 4th judgment unit judges, control MCU11 and high frequency receiver module 10 enter resting state.
Next with reference to figure 3, the structural representation of the PEPS system that Fig. 3 provides for the utility model embodiment.As shown in Figure 3, the PEPS system comprises previously described automobile door handle induction installation and transmitter 2,
Wherein, transmitter 2 comprises:
Export the micro-control unit of high-frequency data by the TXD pin of serial communication interface SCI.
The oscillating circuit that the high-frequency data that is connected with described micro-control unit, described micro-control unit is exported sends by high-frequency signal.
Described according to preamble, the automobile door handle induction installation that the utility model provides has reduced unnecessary power consumption, and quiescent current and the power consumption of the PEPS system that is comprised of the automobile door handle induction installation so can reduce naturally, repeat no more herein.
Illustrate that below by quantitative calculating automobile door handle induction installation and PEPS system that the utility model provides can reduce system resources consumption.Suppose that every 100ms is a dormancy awakening cycle, wherein has the 90ms system to be in resting state, i.e. the first Preset Time; 10ms is the periodic awakening time in addition, i.e. the second Preset Time; Dormancy awakening control module 13 control high frequency receiver modules 10 enter the wake/sleep state, and each needs 1ms.Quiescent current during system hibernates is 1mA, and under the wake-up states, the electric current of MCU11 is 15mA, and the electric current of high frequency receiver module is 5mA.
Suppose that at a dormancy awakening MCU11 does not receive high-frequency data in the cycle, then at periodic awakening in the time, system's average current is (15*2+1*8+5*10)/10=8.8mA; The quiescent current of system is (1*90+8.8*10)/100=1.78mA in the 100ms, has lacked 1.12mA than the 2.9mA under the sleep management method of the prior art.
If in the time, MCU11 has received high-frequency data at periodic awakening, MCU11 reception high-frequency data Yms(X≤Y consuming time≤8+X), then system's average current is I in the periodic awakening time
1=(15* (2+Y)+1* (8+X-Y)+5* (10+X))/(10+X).And the employing prior art, the average current of system is I in the periodic awakening time
2=20* (10+X).Can prove in the span of Y, I is arranged all the time
1＜I
2, and then (1*90+I is arranged all the time
1)/(100+X)＜(1*90+I
2)/(100+X), namely with respect to prior art, the utility model embodiment is so that the static system electric current is less.Therefore, the utility model embodiment the automobile door handle induction installation and the PEPS system that provide can reduce quiescent current and system power dissipation.
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 apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. automobile door handle induction installation, be applied to the PEPS system, comprise receiver, automobile door handle, optical pickocff, central controller and gate lock actuator, wherein optical pickocff is arranged on the described automobile door handle, and be connected with gate lock actuator with receiver respectively, described receiver is connected and comprises microprocessor and high frequency receiver module with central controller, it is characterized in that, described receiver also comprises:
Be used for judging whether described microprocessor enters the condition judgment module of readiness for operation;
Be used for judging in described condition judgment module and control described microprocessor when described microprocessor enters readiness for operation and enter wake-up states, otherwise control the dormancy awakening control module that described microprocessor keeps resting state.
2. automobile door handle induction installation according to claim 1 is characterized in that, the data format of the high-frequency data that described high frequency receiver module receives comprises and wakes head, normal data head and SCI data bit up.
3. a PEPS system is characterized in that, comprises such as the described automobile door handle induction installation of any one in the claim 1 to 2, also comprises:
Transmitter, described transmitter comprises:
Export the micro-control unit of high-frequency data by the TXD pin of serial communication interface SCI;
The oscillating circuit that the high-frequency data that is connected with the micro-control unit of described transmitter, described micro-control unit is exported sends by high-frequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318828 CN202810349U (en) | 2012-07-02 | 2012-07-02 | Induction device of automobile door handle and passive entry passive start (PEPS) system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220318828 CN202810349U (en) | 2012-07-02 | 2012-07-02 | Induction device of automobile door handle and passive entry passive start (PEPS) system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202810349U true CN202810349U (en) | 2013-03-20 |
Family
ID=47869252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220318828 Expired - Lifetime CN202810349U (en) | 2012-07-02 | 2012-07-02 | Induction device of automobile door handle and passive entry passive start (PEPS) system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202810349U (en) |
-
2012
- 2012-07-02 CN CN 201220318828 patent/CN202810349U/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 | ||
| 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: 8 / F, Chuangye building, No. 11, Anxiang Beili, Chaoyang District, Beijing 100101 Patentee before: Beijing Jingwei HiRain Technologies Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |