CN204527067U - A kind of low-power consumption car body controller - Google Patents
A kind of low-power consumption car body controller Download PDFInfo
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- CN204527067U CN204527067U CN201520162815.XU CN201520162815U CN204527067U CN 204527067 U CN204527067 U CN 204527067U CN 201520162815 U CN201520162815 U CN 201520162815U CN 204527067 U CN204527067 U CN 204527067U
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- car body
- body controller
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- power consumption
- wake
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- 230000005059 dormancy Effects 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 13
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 230000037007 arousal Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006266 hibernation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002618 waking effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of low-power consumption car body controller, comprise CPU and power management module, described power management module provides electric energy for described low-power consumption car body controller; Switch acquisition module, it is connected with CPU, for detecting signal and the vehicle body regular tap signal of the switch for having dormancy awakening function; Load control module, it is connected with CPU, for realizing the drived control to vehicle body load; RKE receiver module, it is connected with CPU, for realizing remote keyless entered function, if described car body controller BCM is according to the actv. RKE data flow received under interim awakening mode, adopts three-stage filtration method to judge whether to enter normal mode.
Description
Technical field
The utility model relates to technical field of automotive electronics, particularly relates to a kind of low-power consumption car body controller.
Background technology
Undertaken in the design of the electronic control unit (ECU) of powering by automotive battery direct, low power dissipation design is a very important component part, first, if can't resolve low-power consumption problem, just there will be because automobile is under long-term parked state, ECU exhausts battery electric quantity, causing cannot the situation of start the engine, secondly, in today that energy-conservation, low-carbon (LC) theory are rooted in the hearts of the people day by day, the power consumption reducing ECU can save the energy, for environmental protection is done one's bit.
Program-controlled power-supply service, software dormancy and wake up design be ensure that ECU meets the effective technology of low-power consumption requirement, by carrying out program control to the power supply of partial circuit, the power supply of this partial circuit is closed when entering low-power consumption mode, open the power supply of this partial circuit when exiting low-power consumption mode, just effectively can reduce the power consumption of ECU.
Software dormancy and wake up design need realize function comprise: when meeting dormancy condition forbidden energy partial circuit, wake-up condition is set after enter park mode, exit park mode when meeting wake-up condition and proceed normal running.Meanwhile, when being waken up, need to judge to be whether that actv. wakes up effectively or waken up by burr, when be burr wake up time, CPU again control ECU enters dormancy.
Be integrated with remote keyless in the car body controller (BCM) of low-power consumption and enter (RKE) function, the current ratio that the radiofrequency receiving chip of RKE module consumes in the operational mode is larger, in order to realize overall low-power consumption, must when BCM enter low-power consumption, forbidden energy radiofrequency receiving chip makes it also enter low-power consumption mode simultaneously simultaneously.Because radiofrequency receiving chip cannot carry out remote control reception under low-power consumption mode, and the moment that user manipulates key is random, under rational Consumer's Experience requires, user presses key, BCM just should react, so need the car body controller designing a kind of RKE low-power consumption, make BCM both can meet low-power consumption requirement, can be waken up by remote-control key rapidly again.
Utility model content
In order to solve the shortcoming of prior art, the utility model provides a kind of low-power consumption car body controller.
For achieving the above object, the utility model is by the following technical solutions:
A car body controller for low-power consumption, comprises CPU and power management module, and described power management module provides electric energy for described low-power consumption car body controller;
Switch acquisition module, it is connected with CPU, for detecting signal and the vehicle body regular tap signal of the switch for having dormancy awakening function;
Load control module, it is connected with CPU, for realizing the drived control to vehicle body load;
RKE receiver module, it is connected with CPU, and for realizing remote keyless entered function, described car body controller BCM is according to the actv. RKE data flow received under interim awakening mode, adopt three-stage filtration to avoid BCM by false wake-up, thus reduce the current draw under low-power consumption mode.
Described power management module, comprises several controlled sub-power module block and sub-power modules of voltage stabilizing; Each described controlled sub-power module block, comprises aerotron, and the collecting electrode of described aerotron connects the anode of diode, and the negative electrode of diode is the mouth of described controlled sub-power module, and the collecting electrode of aerotron connects a ground capacitance; The emitter of described aerotron connects the mouth of the sub-power module of voltage stabilizing, a resistance in parallel and electric capacity between emitter and base stage, and the base stage of aerotron is connected in series a resistance, and the other end of described resistance connects the drain electrode of a N-channel MOS FET; The source ground of described MOSFET, grid is connected to the IO control end of CPU by a resistance.
Described switch acquisition module comprises wake source switch and gathers submodule and regular tap collection submodule; Described wake source switch gathers the signal that submodule collection has the switch of dormancy awakening function, and exports the CPU of car body controller to, meets for judging whether the condition that BCM is waken up from park mode and interim awakening mode; Described regular tap gathers the signal that submodule gathers vehicle body regular tap, exports the CPU of car body controller to, for detecting the state of the switch not possessing arousal function.
Described wake source switch gathers the signal of the input end collection wake source switch of submodule, and is connected to the mouth of the sub-power module of a voltage stabilizing by a pull-up resistor; The input end that described wake source switch gathers submodule also connects a ground capacitance, and these ground capacitance two ends are parallel with a branch road, and this route two divider resistances are in series; The point of connection of two divider resistances is the mouth that wake source switch gathers submodule, and is connected to the I/O port of the CPU of car body controller.
Described regular tap gathers the signal of the input end collection regular tap of submodule, and is connected to the mouth of a controlled sub-power module by a pull-up resistor; The input end that described regular tap gathers submodule also connects a ground capacitance, and these ground capacitance two ends are parallel with a branch road, and this route two divider resistances are in series; The point of connection of two divider resistances is the mouth that regular tap gathers submodule, and is connected to the I/O port of the CPU of car body controller.
Described vehicle body load, comprises car light, windscreen wiper and vehicle window.
The beneficial effects of the utility model are:
(1) carry out Programmable power supply design, make it possible to the power supply of independent cutoff circuit; When BCM meets low-power consumption condition, while CPU enters low-power consumption mode, the power supply of all right cutoff peripheral circuit, saves current draw.
(2) design interim awakening mode, whether there is the operation of actv. remote-control key during can low-power consumption mode being judged, ensure that the sensitieness of remote manipulation;
(3) by the three-stage filtration method in interim awakening mode, the remote-control key that BCM can filter out the interference of RF space and non-matching operates, and ensure that BCM can not by false wake-up, thus the current draw under reduce further low-power consumption mode.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of low-power consumption car body controller of the present utility model;
Fig. 2 is the control method mode of operation redirect figure of low-power consumption car body controller of the present utility model;
Fig. 3 is controlled 12V circuit diagram of the present utility model;
Fig. 4 a) gathers submodular circuits figure for of the present utility model for the wake source switch of ignition lock;
Fig. 4 b) gather submodular circuits figure for of the present utility model for the regular tap of left steering switch.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the utility model is described further:
As shown in Figure 1, a kind of car body controller of low-power consumption, comprises CPU and power management module, and described power management module provides electric energy for described low-power consumption car body controller; Switch acquisition module, it is connected with CPU, for detecting signal and the vehicle body regular tap signal of the switch for having dormancy awakening function; Load control module, it is connected with CPU, for realizing the drived control to vehicle body load; RKE receiver module, it is connected with CPU, and for realizing remote keyless entered function, described car body controller BCM is according to the actv. RKE data flow received under interim awakening mode, adopt three-stage filtration to avoid BCM by false wake-up, thus reduce the current draw under low-power consumption mode.Described vehicle body load, comprises car light, windscreen wiper and vehicle window.
As shown in Figure 2, the control method of low-power consumption car body controller of the present utility model, comprises the following steps:
Step (1): after car body controller BCM powers on, automatically enter and keep normal mode;
Step (2): switch acquisition module gathers Body Control on-off signal, and transfers to the I/O port of CPU in car body controller, when BCM meets dormancy condition, then enters park mode;
Step (3): when external interrupt wakeup occurs BCM in the hibernation mode, enter normal mode; Interrupt waking up if timer internal occurs BCM, then enter interim awakening mode;
Step (4): when BCM, under interim awakening mode, external interrupt wakeup occurs, enter normal mode; If BCM receives actv. RKE data flow within the regular hour, three-stage filtration method is adopted to judge whether to enter normal mode;
In described interim awakening mode, adopt three-stage filtration method to judge whether the detailed process entering normal mode be:
At the default time T of interim awakening mode
wakeinside carry out first order filtration, if the effective RKE data bits received continuously is less than default data bits, return park mode; Otherwise the time length extending interim awakening mode is 2*T
wake, carry out second stage filtration;
At 2*T
wakeagain judge the new effective RKE data bits received continuously in time, if the new effective RKE data bits received is less than default data bits, return park mode; If be greater than default data bits, then extend the time of interim awakening mode for (2*T
wake+ actv. RKE frame length), carry out third stage filtration;
As (2*T
wake+ actv. RKE frame length) carry out decoding judgement at the end of the time, the pairing key if RKE Frame is controlled oneself, then enter normal mode, otherwise, return park mode.
The detailed process that in described step (3), BCM enters interim awakening mode by park mode is:
When BCM enters park mode, forbidden energy RKE radio frequency reception function, arranges the timer internal that can wake CPU up simultaneously, the timeout value of timer is set to T
slp, then CPU enters park mode; Through T
slpafter time, CPU is timed device and wakes up, and BCM enters interim awakening mode, and the default duration of interim awakening mode is T
wake.
The timeout value T of described CPU timer internal
slp: T
slp=4*T
wake, wherein, the default time T of the interim awakening mode of CPU timer internal
wakeaccording to remote keyless entered function RKE data bit width time T
bitdetermine: T
wake=8*T
bit.
As shown in Figure 3, the present embodiment is for 12V electronlmobil, and its power management module, comprises two controlled sub-power module blocks and two sub-power modules of voltage stabilizing; Wherein, two sub-power modules of voltage stabilizing are DC/DC power module, and its output voltage is respectively 12V voltage and 5V voltage; The structure of two controlled sub-power modules is identical, and its output voltage is respectively controlled 12V voltage and controlled 5V voltage.
The present embodiment designs two controlled sub-power modules, restores electricity during to realize the power supply of forbidden energy partial circuit when BCM enters park mode and to enter normal mode.Two controlled sub-power modules comprise controlled 12V and controlled 5V two kinds of voltage levvls, and wherein, controlled 12V provides voltage reference for regular tap Acquisition Circuit, and the 5V decision circuit that controlled 5V can close between rest period for other provides power supply.Controlled 12V is identical with the circuit design principle of controlled 5V, is controlled the break-make of metal-oxide-semiconductor, realize the program control of power supply by the I/O pin of CPU.
Controlled 12V power module, comprises aerotron Q1, and the collecting electrode of described aerotron Q1 connects the anode of diode D, and the negative electrode of diode D is connected to controlled 12V voltage end, and the collecting electrode of aerotron Q1 connects electric capacity C1 ground connection; The emitter of described aerotron Q1 connects 12V storage battery, and between emitter and base stage, the other end of the base stage series resistor R1 of a resistance R2 and electric capacity C2 in parallel, described aerotron Q1, described resistance R1 connects the drain electrode of metal-oxide-semiconductor Q2; The grid of described metal-oxide-semiconductor Q2 is connected to the I/O pin control end of CPU by resistance R3; When I/O pin is high level, controlled 12V has voltage to export, and opens controlled 12V; When I/O pin is low level, controlled 12V power module does not have voltage to export, and closes controlled 12V.
Controlled 5V power module is identical with the structure of controlled 12V power module, is not repeated.
Switch acquisition module comprises wake source switch and gathers submodule and regular tap collection submodule; Described wake source switch gathers the signal that submodule collection has the switch of dormancy awakening function, and exports the CPU of car body controller to, meets for judging whether the condition that BCM is waken up from park mode and interim awakening mode; Described regular tap gathers the signal that submodule gathers vehicle body regular tap, exports the CPU of car body controller to, bears the on off state carried for inspection vehicle.
Actual needs gather switch more, for Fig. 4 a) and Fig. 4 b) respectively shown in ignition lock and left steering switch.As Fig. 4 a) shown in, in the present embodiment, wake source switch gathers the ignition lock signal that submodule collection has dormancy awakening function.
Wake source switch gathers the signal of the input end collection wake source switch of submodule, and is connected to 12V storage battery by resistance R4; The input end that described wake source switch gathers submodule also connects electric capacity C3 ground connection, and electric capacity C3 two ends are parallel with a branch road, and this routing resistance R5 and resistance R6 is in series; The point of connection of resistance R5 and resistance R6 is the mouth that wake source switch gathers submodule, and is connected to the I/O port of car body controller.
As Fig. 4 b) shown in, in the present embodiment, regular tap gathers submodule collection for the signal of the regular tap of left steering switch.
Regular tap gathers the signal of the input end collection regular tap of submodule, and is connected to controlled 12V voltage end by resistance R7; The input end that described regular tap gathers submodule also connects electric capacity C4 ground connection, and electric capacity C4 two ends are parallel with a branch road, and this routing resistance R8 and resistance R9 is in series; The point of connection of resistance R8 and resistance R9 is the mouth that regular tap gathers submodule, and is connected to the I/O port of car body controller.
In order to realize overall low-power consumption, the utility model devises program-controlled power supply for partial circuit, RKE low-power consumption scheme is devised for remote-control key arousal function, devise interim awakening mode wake up to eliminate burr for being waken up by burr under low-power consumption mode, finally considerably reduce the overall quiescent current of BCM, can wake up from park mode very delicately simultaneously.
By reference to the accompanying drawings detailed description of the invention of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (6)
1. a low-power consumption car body controller, is characterized in that, comprises CPU and power management module, and described power management module provides electric energy for described low-power consumption car body controller;
Switch acquisition module, it is connected with CPU, for detecting signal and the vehicle body regular tap signal of the switch for having dormancy awakening function;
Load control module, it is connected with CPU, for realizing the drived control to vehicle body load;
RKE receiver module, it is connected with CPU, for realizing remote keyless entered function; If described car body controller BCM is according to the actv. RKE data flow received under interim awakening mode, three-stage filtration method is adopted to judge whether to enter normal mode:
At the default time T of interim awakening mode
wakeinside carry out first order filtration, if the effective RKE data bits received continuously is less than default data bits, return park mode; Otherwise the time length extending interim awakening mode is 2*T
wake, carry out second stage filtration; At 2*T
wakeagain judge the new effective RKE data bits received continuously in time, if the new effective RKE data bits received is less than default data bits, return park mode; If be greater than default data bits, then extend the time of interim awakening mode for (2*T
wake+ actv. RKE frame length), carry out third stage filtration; As (2*T
wake+ actv. RKE frame length) carry out decoding judgement at the end of the time, the pairing key if RKE Frame is controlled oneself, then enter normal mode, otherwise, return park mode.
2. a kind of low-power consumption car body controller as claimed in claim 1, is characterized in that, described power management module, comprises several controlled sub-power module block and sub-power modules of voltage stabilizing; Each described controlled sub-power module block, comprises aerotron, and the collecting electrode of described aerotron connects the anode of diode, and the negative electrode of diode is the mouth of described controlled sub-power module, and the collecting electrode of aerotron connects a ground capacitance; The emitter of described aerotron connects the mouth of the sub-power module of voltage stabilizing, a resistance in parallel and electric capacity between emitter and base stage, and the base stage of aerotron is connected in series a resistance, and the other end of described resistance connects the drain electrode of a N-channel MOS FET; The source ground of described MOSFET, grid is connected to the IO control end of CPU by a resistance.
3. a kind of low-power consumption car body controller as claimed in claim 1, is characterized in that, described switch acquisition module comprises wake source switch and gathers submodule and regular tap collection submodule;
Described wake source switch gathers the signal that submodule collection has the switch of dormancy awakening function, and exports the CPU of car body controller to, meets for judging whether the condition that BCM is waken up from park mode and interim awakening mode;
Described regular tap gathers the signal that submodule gathers vehicle body regular tap, exports the CPU of car body controller to, for detecting the state of the switch not possessing arousal function.
4. a kind of low-power consumption car body controller as claimed in claim 3, is characterized in that, described wake source switch gathers the signal of the input end collection wake source switch of submodule, and is connected to the mouth of the sub-power module of a voltage stabilizing by a pull-up resistor; The input end that described wake source switch gathers submodule also connects a ground capacitance, and these ground capacitance two ends are parallel with a branch road, and this route two divider resistances are in series; The point of connection of two divider resistances is the mouth that wake source switch gathers submodule, and is connected to the I/O port of the CPU of car body controller.
5. a kind of low-power consumption car body controller as claimed in claim 3, is characterized in that, described regular tap gathers the signal of the input end collection regular tap of submodule, and is connected to the mouth of a controlled sub-power module by a pull-up resistor; The input end that described regular tap gathers submodule also connects a ground capacitance, and these ground capacitance two ends are parallel with a branch road, and this route two divider resistances are in series; The point of connection of two divider resistances is the mouth that regular tap gathers submodule, and is connected to the I/O port of the CPU of car body controller.
6. a kind of low-power consumption car body controller as claimed in claim 1, is characterized in that, described vehicle body load, comprises car light, windscreen wiper and vehicle window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520162815.XU CN204527067U (en) | 2015-03-20 | 2015-03-20 | A kind of low-power consumption car body controller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520162815.XU CN204527067U (en) | 2015-03-20 | 2015-03-20 | A kind of low-power consumption car body controller |
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| Publication Number | Publication Date |
|---|---|
| CN204527067U true CN204527067U (en) | 2015-08-05 |
Family
ID=53741105
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|---|---|---|---|
| CN201520162815.XU Expired - Fee Related CN204527067U (en) | 2015-03-20 | 2015-03-20 | A kind of low-power consumption car body controller |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466665A (en) * | 2018-05-11 | 2019-11-19 | 坎培诺洛有限公司 | Bicycle crank arm equipped with electrical/electronic system |
| CN111532173A (en) * | 2020-05-14 | 2020-08-14 | 海马新能源汽车有限公司 | Power consumption controller and control method for electric automobile |
| CN113032020A (en) * | 2021-02-03 | 2021-06-25 | 上海技涵电子科技有限公司 | Method for DCM to stably receive RKE single-frame RF signals in low-power-consumption mode |
| US11214331B2 (en) | 2018-05-11 | 2022-01-04 | Campagnolo S.R.L. | Bicycle component provided with a temperature-compensated stress/strain sensor |
| US11377169B2 (en) | 2018-05-11 | 2022-07-05 | Campagnolo S.R.L. | Bicycle crankarm and related crankset |
| US11401002B2 (en) | 2018-05-11 | 2022-08-02 | Campagnolo S.R.L. | Bicycle crankarm having a stress/strain detector for a torque meter or a power meter, and methods for manufacturing and using the crankarm |
| US11547004B2 (en) | 2018-05-11 | 2023-01-03 | Campagnolo S.R.L. | Bicycle component made of composite material and related manufacturing process |
-
2015
- 2015-03-20 CN CN201520162815.XU patent/CN204527067U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466665A (en) * | 2018-05-11 | 2019-11-19 | 坎培诺洛有限公司 | Bicycle crank arm equipped with electrical/electronic system |
| US11214331B2 (en) | 2018-05-11 | 2022-01-04 | Campagnolo S.R.L. | Bicycle component provided with a temperature-compensated stress/strain sensor |
| US11377169B2 (en) | 2018-05-11 | 2022-07-05 | Campagnolo S.R.L. | Bicycle crankarm and related crankset |
| US11401002B2 (en) | 2018-05-11 | 2022-08-02 | Campagnolo S.R.L. | Bicycle crankarm having a stress/strain detector for a torque meter or a power meter, and methods for manufacturing and using the crankarm |
| US11547004B2 (en) | 2018-05-11 | 2023-01-03 | Campagnolo S.R.L. | Bicycle component made of composite material and related manufacturing process |
| US11577801B2 (en) | 2018-05-11 | 2023-02-14 | Campagnolo S.R.L. | Bicycle component provided with a temperature-compensated stress/strain sensor |
| US11597469B2 (en) | 2018-05-11 | 2023-03-07 | Campagnolo S.R.L. | Bicycle crankarm provided with electric/electronic system |
| CN110466665B (en) * | 2018-05-11 | 2023-04-07 | 坎培诺洛有限公司 | Bicycle crank arm provided with an electric/electronic system |
| CN111532173A (en) * | 2020-05-14 | 2020-08-14 | 海马新能源汽车有限公司 | Power consumption controller and control method for electric automobile |
| CN113032020A (en) * | 2021-02-03 | 2021-06-25 | 上海技涵电子科技有限公司 | Method for DCM to stably receive RKE single-frame RF signals in low-power-consumption mode |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 |