CN115179875A - Automobile door reliable control method, electric controller and carrier - Google Patents
Automobile door reliable control method, electric controller and carrier Download PDFInfo
- Publication number
- CN115179875A CN115179875A CN202210696863.1A CN202210696863A CN115179875A CN 115179875 A CN115179875 A CN 115179875A CN 202210696863 A CN202210696863 A CN 202210696863A CN 115179875 A CN115179875 A CN 115179875A
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- door
- power supply
- controllable power
- automobile
- controller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/28—Arrangements for controlling current
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/53—Type of wing
- E05Y2900/531—Doors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Lock And Its Accessories (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses a reliable control method for an automobile door, an electric controller and a carrier, wherein the method comprises the following steps: s1: detecting a wake-up signal, if the wake-up signal is detected, waking up the controllable power supply and driving the door controller to work; s2: detecting the working voltage amplitude of the storage battery, and if the voltage amplitude of the storage battery has a falling trend, adjusting the output current peak value of the door controller to enable the automobile door motor to operate at a set power; if the voltage amplitude of the storage battery does not drop any more, adjusting the output of the gate controller according to the set threshold current; s3: when the voltage amplitude of the storage battery does not drop, the control circuit controls the action of the automobile door according to the instruction received by the communication circuit, and if the awakening signal or the instruction signal is not detected within a certain time, the enabling signal of the controllable power supply is set to be low, and the operation of the controllable power supply is stopped. The electric control method can reduce the standby energy consumption of the automobile door controller and improve the reliability of automobile door control.
Description
Technical Field
The invention relates to the field of electric control door controllers of new energy automobiles, in particular to an automobile door reliable control method, an electric control system and a carrier.
Background
New forms of energy vapour door electric control door accuse system such as bus or big bus mainly comprises door accuse ware (be called for short the door accuse ware), switch, pencil and motor, and electric control system passes through driving motor, drives lead screw or belt pulley and realizes functions such as switch door, and the new forms of energy vapour door electric control system who uses in the existing market mainly has following problem: 1. when the traditional new energy electric automobile door electric control system is in a standby state, the standby current is more than 100mA, and the requirement of a vehicle factory on the condition that the standby current of the automobile door electric control system is less than 10mA cannot be met. 2. The vehicle door electric control system needs larger current at the moment of opening and closing the door, and when the storage battery of the new energy electric vehicle is at the lower limit of the working voltage, the input power supply voltage is easy to drop instantly according to the conventional motor control method, so that the vehicle door can not be opened and closed normally. 3. The existing software upgrading of the car door controller has no OTA upgrading function, maintenance personnel are required to get on the car for upgrading, and more labor cost is required to be invested.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a reliable control method for an automobile door, which can reduce the standby power consumption of an automobile door electric control system and ensure the stable operation of the automobile door electric control system when the voltage of an automobile storage battery is lower.
The invention also aims to provide the automobile door electric control system and the automobile, which can implement the method, and can save electric energy and ensure the stable operation of the automobile door.
The technical scheme is as follows: the invention discloses a reliable control method of an automobile door, which comprises the following steps:
s1: detecting a wake-up signal, if the wake-up signal is detected, waking up the controllable power supply and driving the door controller to work;
s2: detecting the working voltage amplitude of the storage battery, and if the voltage amplitude of the storage battery has a falling trend, adjusting the output current peak value of the door controller to enable the automobile door motor to operate at a set power; if the voltage amplitude of the storage battery does not drop any more, adjusting the output of the gate controller according to the set threshold current;
s3: when the voltage amplitude of the storage battery does not drop, the control circuit controls the action of the automobile door according to the instruction received by the communication circuit, and if the awakening signal or the instruction signal is not detected within a certain time, the enabling signal of the controllable power supply is set to be low, and the operation of the controllable power supply is stopped.
Further, in the step S2, the output of the door controller is controlled by a PWM control method, and if the voltage amplitude of the storage battery has a falling trend, the limit value of the duty ratio of PWM is reduced while the automobile door motor is ensured to operate at the set power; and if the voltage amplitude of the storage battery does not drop any more, increasing the PWM duty ratio to a set threshold value.
Further, the method also comprises the following steps: s1.1: and when the automobile is detected to be in a garage or in the driving process, setting the enabling signal of the controllable power supply to be low, and stopping the operation of the controllable power supply.
Further, the method also comprises the following steps: s1.2: when the automobile enters a warehouse or runs from the front side and the state of the automobile door changes, the automobile door fault is judged, the enabling signal of the controllable power supply is set high, the controllable power supply is awakened to work, and the door controller is driven to process the fault.
Further, the method also comprises the following steps:
s4: if an OTA updating request is detected while the wake-up signal is detected, the communication circuit starts to receive OTA data, and the gate controller backs up the control program to a preset backup storage space;
s4.1: verifying the received file, and burning the received file into a storage medium of the door controller if the received file passes the verification;
s4.2: judging whether the program upgrading is successfully completed or not, and if the program upgrading is successfully completed, restarting the gate controller program; and if the upgrade fails, the control program in the backup storage space is backed up and restored to the storage medium of the door controller.
The automobile door electric control system comprises a communication circuit and a control circuit, wherein the communication circuit comprises a communication chip and a conventional power supply for supplying power to the communication chip, the control circuit comprises a door controller, a voltage detection circuit and a controllable power supply, the voltage detection circuit and the controllable power supply are electrically connected with the door controller, the conventional power supply and the controllable power supply are both electrically connected with an automobile storage battery, the voltage detection circuit is used for detecting the voltage of the automobile storage battery, the communication chip is electrically connected with the controllable power supply, the controllable power supply is also electrically connected with the door controller, the conventional power supply is always in a wake-up state, the controllable power supply wakes up for a preset time after receiving a wake-up signal, and sleeps for the rest time.
Furthermore, the communication chip controls the connection on-off of the controllable power supply and the automobile storage battery through a discrete device.
Further, the discrete device comprises a MOS tube.
Further, controllable power supply includes DC/DC module and LDO chip that connects in order, the LDO chip is for the gate controller power supply.
The vehicle comprises the automobile door electric control system, and an automobile door motor is electrically connected with an automobile storage battery through the automobile door electric control system.
Has the advantages that: compared with the prior art, the invention has the following advantages: 1. when in standby, only the communication circuit is powered, and the standby power consumption is less than 10mA. 2. When the voltage of the automobile storage battery is reduced, the power of the motor can be ensured, the normal work of the automobile door motor is ensured, the faults are reduced, and the automobile door can be normally opened when the voltage of the automobile storage battery is low. 3. OTA upgrading of the door controller can be realized, and when OTA upgrading is unsuccessful, the control program can be restored to the original version, so that reliable use of the door controller is guaranteed. 4. And the controller cost is reduced by adopting discrete device control, and compared with a relay, the failure rate is lower.
Drawings
Fig. 1 is a flowchart of a reliable control method for an automobile door according to a first embodiment of the present invention;
fig. 2 is a flowchart of a reliable control method for an automobile door according to a second embodiment of the present invention;
fig. 3 is a schematic block diagram of an automobile control system according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Referring to fig. 1, the method for reliably controlling the automobile door according to the embodiment of the invention comprises the following steps:
s1: detecting a wake-up signal, if the wake-up signal is detected, waking up the controllable power supply and driving the door controller to work;
s2: detecting the working voltage amplitude of the storage battery, and if the voltage amplitude of the storage battery has a falling trend, adjusting the output current peak value of the door controller to enable the automobile door motor to operate at a set power; if the voltage amplitude of the storage battery does not drop any more, adjusting the output of the gate controller according to the set threshold current;
s3: when the voltage amplitude of the storage battery does not drop, the control circuit controls the action of the automobile door according to the instruction received by the communication circuit, and if the awakening signal or the instruction signal is not detected within a certain time, the enabling signal of the controllable power supply is set to be low, and the operation of the controllable power supply is stopped.
According to the reliable control method for the automobile door, when the door needs to be controlled to act, the power supply capable of supplying power for the control circuit and the door controller is awakened to work, and the electric energy of the storage battery is converted into the electric energy capable of driving the control circuit and the door controller. The controllable power supply is awakened to work only for a certain time each time, the controllable power supply enters a sleep mode if an awakening signal or an instruction signal is not received within the working time of the controllable power supply, the controllable power supply stops working, and only a conventional power supply for supplying power to the communication chip works, and the standby current of the communication chip is very small and is only about 1uA, so that the standby energy consumption of the automobile door controller can be reduced by the method, the door controller can normally work within 100 mu s of door action, the requirement that the standby power consumption is less than 10mA can be met, the power consumption of a door control system is reduced, and the requirement of a vehicle factory is met.
And because the starting of motor is the electric current in the twinkling of an eye great, when the battery of car is in supply voltage lower limit, can make the voltage output of battery reduce, make control circuit and door controller can't steady operation, so when controllable power supply worked, need monitor the voltage amplitude of battery, when the voltage amplitude of battery had the decline trend, then reduced the output current peak value of door controller, avoid operating voltage to fall, resume the current output of controllable power after voltage stabilization, carry out the control to the car door, prevent that the door can't normally open and close.
In the embodiment, the output of the gate controller is controlled by the control circuit through a PWM method, and when the voltage amplitude of the storage battery is detected to have a descending trend, the limit value of the duty ratio of PWM is dynamically reduced while the gate motor is ensured to be operated at the set power, so that the peak value of the output current is prevented from being overlarge. And when the voltage amplitude of the storage battery is stable, the duty ratio of the PWM is restored to the set threshold value. In practice, the adjustment amount is determined by a relationship curve between the duty ratio threshold range of the PWM of the door motor and the operating voltage, which is calibrated in advance through experiments.
In this embodiment, after the controllable power supply is awakened and works for a certain time each time, if the awakening signal is not detected during the working period, the power supply for the door controller is stopped. The wake-up signal may be a wake-up frame detected by the communication chip, or an operation instruction signal or a gate state signal directly connected to the controllable power supply.
Referring to fig. 2, due to the communication circuit, the control program of the gate controller can be updated in an OTA manner, so that the labor cost of batch updating of the program is reduced, and the steps are as follows:
s4: if an OTA updating request is detected while the wake-up signal is detected, the communication circuit starts to receive OTA data, and the gate controller backs up the control program to a preset backup storage space;
s4.1: verifying the received file, and burning the received file into a storage medium of the door controller if the received file passes the verification;
s4.2: judging whether the program upgrading is successfully completed or not, and if the program upgrading is successfully completed, restarting the door controller program; and if the upgrade fails, the control program in the backup storage space is backed up and restored to the storage medium of the door controller.
By the method, when the upgrading of the program through the OTA is unsuccessful, the gate controller can restore the backup gate controller control program, and the reliable use of the gate controller is ensured.
Referring to fig. 3, the electronic control system for the automobile door according to the embodiment of the invention includes a communication circuit and a control circuit. The communication circuit comprises a communication chip and a conventional power supply for supplying power to the communication chip, the control circuit comprises a door controller, a voltage detection circuit and a controllable power supply, the voltage detection circuit is electrically connected with a storage battery of an automobile, and the communication chip is electrically connected with the door controller. The conventional power supply works all the time and supplies power to the communication chip, the controllable power supply works for a set time only when receiving the wake-up signal, and the controllable power supply does not work in other time.
Because the relay fault rate is higher, the hard wire control signal or the communication chip is electrically connected with the controllable power supply through the discrete device, when the hard wire control signal or the communication chip detects a wake-up frame, the discrete device is controlled to be conducted to enable the controllable power supply, and when the communication chip does not detect the wake-up frame within a set time in the working period of the controllable power supply, the discrete device is turned off to stop the controllable power supply from working, so that the controllable power supply enters the dormancy state. In this embodiment, select for use the MOS pipe to control controllable power supply, circuit structure is simple and low cost to can put low through hard-line messenger controllable power signal or communication chip messenger controllable power signal in the vehicle garage entry or in the in-process of traveling, cut off being connected of controllable power supply and car battery, make controllable power not be able to the electricity, make unable work such as door controller, prevent accident and open the door. Meanwhile, when the state of the door is detected to change in the driving or warehousing process, the automobile door is indicated to be possibly broken down, and at the moment, the controllable power supply needs to be awakened to drive the door controller to work, so that the automobile door is timely processed to further protect the safety in the driving process. According to the technical scheme, the hardware protection function is added, and the safety in the driving process is improved.
In this embodiment, the controllable power supply includes a DC/DC module outputting 5V and an LDO (linear regulator) chip outputting 3.3V. The DC/DC module converts the output of the storage battery into 5V direct current, and the LDO chip converts the 5V direct current converted by the DC/DC module into 3.3V direct current for the gate controller to use.
The vehicle mainly comprises the automobile door electric control system, wherein a door motor and a door controller of the automobile are connected with a power supply of the automobile, namely a storage battery of the automobile, through the automobile door electric control system.
Claims (10)
1. A reliable control method for an automobile door is characterized by comprising the following steps:
s1: detecting a wake-up signal, if the wake-up signal is detected, waking up the controllable power supply and driving the door controller to work;
s2: detecting the working voltage amplitude of the storage battery, and if the voltage amplitude of the storage battery has a falling trend, adjusting the output current peak value of the door controller to enable the automobile door motor to operate at a set power; if the voltage amplitude of the storage battery does not drop any more, regulating the output of the gate controller according to the set threshold current;
s3: when the voltage amplitude of the storage battery does not drop, the control circuit controls the action of the automobile door according to the instruction received by the communication circuit, and if the awakening signal or the instruction signal is not detected within a certain time, the enabling signal of the controllable power supply is set to be low, and the operation of the controllable power supply is stopped.
2. The reliable control method for the automobile door according to claim 1, characterized in that in step S2, the output of the door controller is controlled by a PWM control mode, and if the voltage amplitude of the storage battery has a drop trend, the limit value of the PWM duty cycle is reduced while the automobile door motor is ensured to operate at a set power; and if the voltage amplitude of the storage battery does not drop any more, increasing the PWM duty ratio to a set threshold value.
3. The automotive door reliable control method as claimed in claim 1, further comprising the steps of:
s1.1: and when the automobile is detected to be in a garage or in the driving process, setting the enabling signal of the controllable power supply to be low, and stopping the operation of the controllable power supply.
4. A method for reliable control of an automotive door according to claim 3, further comprising the steps of:
s1.2: when the automobile enters a warehouse from the front side or runs and the state of the automobile door changes, the fault of the automobile door is judged, the enable signal of the controllable power supply is set high, the controllable power supply is awakened to work, and the door controller is driven to process the fault.
5. The automotive door reliable control method as claimed in claim 1, further comprising the steps of:
s4: if an OTA updating request is detected while the wake-up signal is detected, the communication circuit starts to receive OTA data, and the gate controller backs up the control program to a preset backup storage space;
s4.1: verifying the received file, and burning the received file into a storage medium of the gate controller if the received file passes the verification;
s4.2: judging whether the program upgrading is successfully completed or not, and if the program upgrading is successfully completed, restarting the door controller program; and if the upgrade fails, the control program in the backup storage space is backed up and restored to the storage medium of the door controller.
6. An electric control system of an automobile door for implementing the reliable control method of the automobile door according to any one of claims 1 to 5, comprising a communication circuit and a control circuit, wherein the communication circuit comprises a communication chip and a conventional power supply for supplying power to the communication chip, the control circuit comprises a door controller, a voltage detection circuit and a controllable power supply, the voltage detection circuit is electrically connected with the door controller, the conventional power supply and the controllable power supply are both electrically connected with an automobile storage battery, the voltage detection circuit is used for detecting the voltage of the automobile storage battery, the communication chip is electrically connected with the controllable power supply, the controllable power supply is also electrically connected with the door controller, the conventional power supply is always kept in a wake-up state, the controllable power supply wakes up for a preset time after receiving a wake-up signal, and sleeps for the rest time.
7. An automobile door electric control system according to claim 6, characterized in that the communication chip controls the connection of the controllable power supply and the automobile storage battery through a discrete device.
8. The automotive door electrical system according to claim 7, wherein the discrete device comprises a MOS transistor.
9. An automotive door electric control system according to claim 6, characterized in that said controllable power supply comprises a DC/DC module and an LDO chip connected in series, said LDO chip supplying power to said door controller.
10. A vehicle comprising an automotive door electrical control system according to any one of claims 6 to 9, wherein a door motor of the vehicle is electrically connected to a battery of the vehicle through the automotive door electrical control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210696863.1A CN115179875B (en) | 2022-06-20 | 2022-06-20 | Reliable control method for automobile door, electric controller and carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210696863.1A CN115179875B (en) | 2022-06-20 | 2022-06-20 | Reliable control method for automobile door, electric controller and carrier |
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| Publication Number | Publication Date |
|---|---|
| CN115179875A true CN115179875A (en) | 2022-10-14 |
| CN115179875B CN115179875B (en) | 2024-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210696863.1A Active CN115179875B (en) | 2022-06-20 | 2022-06-20 | Reliable control method for automobile door, electric controller and carrier |
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| Country | Link |
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| CN (1) | CN115179875B (en) |
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| CN203920642U (en) * | 2014-06-04 | 2014-11-05 | 华域汽车电动系统有限公司 | There is dormancy and wake-up control circuit that voltage keeps function |
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| CN106907069A (en) * | 2015-10-12 | 2017-06-30 | 福特环球技术公司 | Without key Vehicular system |
| CN206926605U (en) * | 2017-06-28 | 2018-01-26 | 北京经纬恒润科技有限公司 | A kind of motor-drive circuit |
| CN108708636A (en) * | 2012-12-24 | 2018-10-26 | 麦格纳覆盖件有限公司 | Motor vehicles close collision management system and method in the electronic latch of device |
| CN110435565A (en) * | 2019-07-02 | 2019-11-12 | 未来汽车科技（深圳）有限公司 | A kind of power-supplying circuit and method, automobile instrument and automobile of automobile instrument |
| CN114428629A (en) * | 2022-01-29 | 2022-05-03 | 安徽江淮汽车集团股份有限公司 | OTA (over the air) upgrading method for vehicle-mounted controller |
-
2022
- 2022-06-20 CN CN202210696863.1A patent/CN115179875B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5744874A (en) * | 1995-05-24 | 1998-04-28 | Hitachi, Ltd. | Car electronic control system & method for controlling the same |
| US6967458B1 (en) * | 2002-07-31 | 2005-11-22 | Western Digital Technologies, Inc. | Decreasing spin up time in a disk drive by adjusting a duty cycle of a spindle motor PWM signal to maintain constant average input current |
| CN102324844A (en) * | 2011-09-23 | 2012-01-18 | 科博达技术有限公司 | Microcontroller-controlled voltage stabilization device and voltage stabilization method for vehicle body electronic controller |
| CN108708636A (en) * | 2012-12-24 | 2018-10-26 | 麦格纳覆盖件有限公司 | Motor vehicles close collision management system and method in the electronic latch of device |
| CN203920642U (en) * | 2014-06-04 | 2014-11-05 | 华域汽车电动系统有限公司 | There is dormancy and wake-up control circuit that voltage keeps function |
| CN104859565A (en) * | 2014-07-28 | 2015-08-26 | 北汽福田汽车股份有限公司 | Power management circuit, method and system |
| CN106907069A (en) * | 2015-10-12 | 2017-06-30 | 福特环球技术公司 | Without key Vehicular system |
| CN206926605U (en) * | 2017-06-28 | 2018-01-26 | 北京经纬恒润科技有限公司 | A kind of motor-drive circuit |
| CN110435565A (en) * | 2019-07-02 | 2019-11-12 | 未来汽车科技（深圳）有限公司 | A kind of power-supplying circuit and method, automobile instrument and automobile of automobile instrument |
| CN114428629A (en) * | 2022-01-29 | 2022-05-03 | 安徽江淮汽车集团股份有限公司 | OTA (over the air) upgrading method for vehicle-mounted controller |
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| CN115179875B (en) | 2024-07-26 |
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