CN117593816A - Electricity-saving management method and system for built-in battery of intelligent key - Google Patents

Electricity-saving management method and system for built-in battery of intelligent key Download PDF

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Publication number
CN117593816A
CN117593816A CN202311429027.8A CN202311429027A CN117593816A CN 117593816 A CN117593816 A CN 117593816A CN 202311429027 A CN202311429027 A CN 202311429027A CN 117593816 A CN117593816 A CN 117593816A
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CN
China
Prior art keywords
key
intelligent key
signal
intelligent
period
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Pending
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CN202311429027.8A
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Chinese (zh)
Inventor
龚甜甜
黄波
晏师勉
罗凡
崔立娜
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Dongfeng Peugeot Citroen Automobile Co Ltd
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Dongfeng Peugeot Citroen Automobile Co Ltd
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Application filed by Dongfeng Peugeot Citroen Automobile Co Ltd filed Critical Dongfeng Peugeot Citroen Automobile Co Ltd
Priority to CN202311429027.8A priority Critical patent/CN117593816A/en
Publication of CN117593816A publication Critical patent/CN117593816A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0248—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal dependent on the time of the day, e.g. according to expected transmission activity
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C2009/00579—Power supply for the keyless data carrier
    • G07C2009/00587—Power supply for the keyless data carrier by battery

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Lock And Its Accessories (AREA)

Abstract

The invention discloses a power saving management method and system for a built-in battery of an intelligent key. And starting a counter to count according to the use stage of the key, and switching the current working mode of the key to a sleep mode when the set time length is reached, the key does not receive any wake-up signal or operation signal within the set time length and the key is not in the car, wherein the key corresponds to different use frequencies in different use stages. The invention manages the electric quantity of the whole life cycle of the key, and saves the service life of the built-in battery of the key.

Description

Electricity-saving management method and system for built-in battery of intelligent key
Technical Field
The invention belongs to the technical field of vehicle control, and particularly relates to a power-saving management method and system for a built-in battery of an intelligent key.
Background
Passenger car keyless entry systems (also known as smart key systems) have become increasingly popular. The key can interact and authenticate information with the ECU of the whole car through electromagnetic wave signals in the car and outside the car, and then keyless entry and keyless starting are realized.
The internal circuit structure of the intelligent key is powered by a built-in battery, and receives and transmits signals. Because of the size of the key, the key generally uses a small battery, such as CR2032H, which has a capacity of 240mAH. The service life of the battery of the intelligent key is generally about 2 years according to the estimated driving time of 4 hours per day.
At present, the prior art only optimizes the strategy of the vehicle body ECU in the aspect of driving the low-frequency antenna on the vehicle, and saves the electric quantity of the key by using different wake-up frequencies for the key.
Disclosure of Invention
In order to increase the service life of a key battery, reduce energy consumption and protect environment, the invention provides a power-saving management method and a power-saving management system for an intelligent key built-in battery.
The invention discloses a power saving management method for a built-in battery of an intelligent key, which comprises the following steps:
starting a counter to count according to the use stage of the intelligent key, and switching the current working mode of the intelligent key to a sleep mode when the intelligent key reaches a set time length and the intelligent key meets a set condition within the set time length, wherein the intelligent key corresponds to different use frequencies in different use stages; the setting conditions include: the smart key does not receive any wake-up signal or operation signal, and the smart key is not in the car.
The use stage of the intelligent key comprises the following steps: factory warehouse storage period, whole garage storage period and customer service period, and after the intelligent key is assembled and leaves the factory, the intelligent key is in the factory warehouse storage period; after the intelligent key finishes learning on the whole vehicle, the intelligent key is in the whole garage storage period; after the whole car is delivered to a customer for use, the intelligent key is in the service life of the customer; the intelligent key corresponds to different use frequencies in different use stages; the customer use period has the highest use frequency and the factory warehouse use period has the lowest use frequency.
The intelligent key is located in a use stage which is jointly identified by a first identification bit learning_flag and a second identification bit MS_flag, and when the first identification bit learning_flag and the second identification bit MS_flag are both 0, the intelligent key is indicated to be located in a factory warehouse; when the first identification bit learning_flag is 1 and the second identification bit MS_flag is 0, the intelligent key is in the whole garage storage period; and when the first identification bit learning_flag and the second identification bit MS_flag are both 1, the intelligent key is indicated to be in the service period of the client.
The wake-up signal to the smart key includes: a wake-up signal sent by a vehicle-end low-frequency antenna;
the operation signal to the smart key includes: when a customer presses a key, the key recognizes the pressed key and sends out a response signal; pressing the car locking key on the key, the key sends a car locking request to the car end ECU.
Further, the working modes of the intelligent key include: normal operation mode, normal sleep mode, deep sleep mode. The intelligent key under each working mode is characterized by comprising the following components:
normal operation mode: all functions of the intelligent key are activated, a low-frequency (LF) antenna is periodically activated by the intelligent key to detect whether an ECU wake-up signal of a vehicle body is received, a motion sensor works normally, and the battery power consumption of the intelligent key is highest;
normal sleep mode: temporarily turning off the low frequency antenna detection function, but the motion sensor can still detect the smart key state, and the smart key remote control function (RKE)/emergency start function can be used; this mode may be exited by key fob remote control (RKE), activation of emergency anti-theft authentication (IMMO), key fob movement, etc.
Deep sleep mode: closing a low-frequency antenna detection function and a motion detection sensor function, wherein the RKE/emergency starting function can be used; the mode may be exited by RKE, activation of IMMO.
Further, when the using stage of the intelligent key is a factory storage period, starting a counter sleep_counter1 for timing, and if the intelligent key does not receive a wake-up signal or an operation signal in the first set time period T1 and the intelligent key is not in the vehicle, entering a deep sleep mode by the intelligent key.
Further, if one or more of the following three operations are performed on the smart key within the first set period of time T1, the counter sleep_counter1 counts again from zero:
(1) Pressing a key of the intelligent key, and sending out a high-frequency signal (RF) by the intelligent key;
(2) Detecting a wake-up signal of a Low Frequency (LF) antenna at a vehicle end, wherein the intelligent key can be legally matched with the vehicle end;
(3) An emergency anti-theft authentication (IMMO) module is activated.
Further, when the using stage of the intelligent key is the whole garage life, starting the counter sleep_counter1 for timing, and if the intelligent key does not receive a wake-up signal or an operation signal in the second set time period T2, entering a deep sleep mode by the intelligent key.
Further, when the using stage of the intelligent key is the using stage of a customer, starting a counter sleep_counter1 for timing, and if the intelligent key does not receive a wake-up signal or an operation signal in the first set time period T1 and the intelligent key is not in a car, entering a common sleep mode by the intelligent key; if the intelligent key does not receive any wake-up signal or operation signal in the third set time period T3 and the intelligent key is not in the vehicle, the intelligent key enters a deep sleep mode.
Further, the first set duration T1 is smaller than the second set duration T2, and the second set duration T2 is smaller than the third set duration T3.
Further, when the intelligent key performs the normal sleep mode or the deep sleep mode, any key on the intelligent key is pressed, and the intelligent key can reenter the normal mode.
The second object of the present invention is achieved by a power saving management system for a built-in battery of an intelligent key, comprising: a timer module and a working mode switching module;
the timer module is used for starting a counter to count according to the using stage of the intelligent key;
the working mode switching module is used for switching the working mode of the intelligent key, and when the timing in the timer module reaches the set duration and the intelligent key meets the set condition within the set duration, the current working mode of the intelligent key is switched to different sleep modes; the setting conditions include: the smart key does not receive any wake-up signal or operation signal, and the smart key is not in the car.
A non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements any step of a power saving management method of the smart key built-in battery.
The invention manages the electric quantity of the whole life cycle (ex-factory storage period, whole garage storage period and customer use period) of the intelligent key, and saves the service life of the built-in battery of the intelligent key.
Drawings
FIG. 1 is a schematic flow chart of the method of the present invention;
FIG. 2 is a schematic diagram of a factory inventory mode switch;
FIG. 3 is a schematic diagram of a whole vehicle inventory mode switch;
FIG. 4 is a schematic diagram of customer usage pattern switching.
Detailed Description
The following detailed description is presented to explain the claimed invention and to enable those skilled in the art to understand the claimed invention. The scope of the invention is not limited to the following specific embodiments. It is also within the scope of the invention to include the claims of the present invention as made by those skilled in the art, rather than the following detailed description.
The embodiment of the application comprises a power saving management method of a built-in battery of an intelligent key, which comprises the following steps:
and starting a counter to count according to the use stage of the intelligent key, and switching the current working mode of the intelligent key to different sleep modes when the set time length is reached, the intelligent key does not receive any wake-up signal or operation signal within the set time length, and the intelligent key is not in the vehicle, wherein the identification parameters are used for identifying the use stage of the intelligent key, and the intelligent key corresponds to different use frequencies in different use stages.
The hardware structure of the intelligent key comprises: the key ECU, a Low Frequency (LF) receiving antenna, a High Frequency (HF) transmitting antenna, a motion sensor, a built-in battery and an IMMO emergency response module.
The use stage of the intelligent key is identified by a first identification bit learning_flag and a second identification bit MS_flag together, as shown in the following table 1;
after the intelligent key is assembled and leaves the factory, the intelligent key is in a factory warehouse; the first identification bit learning_flag and the second identification bit MS_flag are respectively assigned with 0;
after the intelligent key finishes Learning on the whole vehicle, the first identification bit learning_flag is assigned to be 1, and the intelligent key is in the whole garage storage period;
when the whole car is delivered to a customer, a method of long-pressing a physical key on the intelligent key can be used, so that the second identification bit MS_flag is set to be 1, and the intelligent key is in the service life of the customer.
Table 1 key identification parameter table
The working modes of the intelligent key are divided into three types: normal operation mode, normal sleep mode, deep sleep mode. The key features in each mode of operation include:
normal operation mode: all functions of the key are activated, the key periodically activates the LF antenna to detect whether an ECU wake-up signal of the vehicle body exists or not, the motion sensor works normally, and the battery power consumption of the key is highest;
normal sleep mode: temporarily turning off the low frequency antenna detection function, but the motion sensor can still detect the key status, the RKE/emergency start function can be used; the mode may be exited by key press remote control (RKE), activation of emergency anti-theft authentication (IMMO), key movement, etc.
Deep sleep mode: the RKE/emergency start function may be used by turning off the low frequency antenna detection function, the motion detection sensor function. The mode may be exited by RKE, activation of IMMO.
As shown in fig. 2, when the use stage of the key is a factory storage stage, a counter sleep_counter1 is started to count, and if the key does not receive a wake-up signal or an operation signal and the key is not in the vehicle within a first set period of time T1 (e.g., 3 min), the key enters a deep sleep mode.
If there are one or more of the following three operations on the key within the first set period T1, the counter sleep_counter1 counts again from zero:
(1) Pressing a key button, the key emitting a high frequency (RF) signal;
(2) Detecting a Low Frequency (LF) signal of a vehicle end and waking up, wherein a key can be legally matched with the vehicle end;
(3) Emergency anti-theft authentication (IMMO module is activated, activated by near field communication (e.g. key against emergency response antenna).
As shown in fig. 3, when the use stage of the key is the whole garage storage period, taking into consideration the offline detection- > warehouse entry time of the whole car in the factory, starting the timer sleep_counter1 for timing, and if the key does not receive a wake-up signal or an operation signal within a second set period T2 (for example, 3 days), entering a deep sleep mode by the key; if the key receives a wake-up signal or an operation signal within the second set period of time T2, the counter sleep_counter1 counts again.
When the whole vehicle is to be delivered to a customer, a vehicle operator adopts a method of long-pressing a physical key on a key to enable the second identification parameter MS_flg to be=1, namely the first identification parameter learning_flag and the second identification parameter MS_flg are both taken as 1 at the moment. As shown in fig. 4, when the use phase of the key is the customer use period, starting a counter sleep_counter1 for timing, and if the key does not receive a wake-up signal or an operation signal within a first set period of time T1 (for example, 3 min) and the key is not in the car, the key enters a normal sleep mode; if the key does not receive any wake-up signal or operation signal and the key is not in the car within a third set period of time T3 (e.g. 15 days), the key enters a deep sleep mode. If the key receives a wake-up signal or an operation signal within the first set time period T1 or the third set time period T3 and the key is not in the vehicle, the timer is reset and then the time is counted again. For convenience in timing, two timers can be set to respectively count, one timer is used for judging whether the key in the first set time period T1 (for example, 3 min) receives a wake-up signal or an operation signal and the key is not in the vehicle, and if the key is not received, the key enters a common sleep mode; if the key receives a wake-up signal or an operation signal within the first set time period T1 and the key is not in the vehicle, resetting the timer and then reckoning; the other timer is used for judging whether the key in the third set duration T3 receives any wake-up signal or operation signal and the key is not in the vehicle, if the key is not received in the third set duration T3, the key enters the deep sleep mode, and if the key in the third set duration T3 receives the wake-up signal or operation signal and the key is not in the vehicle, the timer is reset and then reckoned.
The first set duration T1 is smaller than the second set duration T2, and the second set duration T2 is smaller than the third set duration T3.
When the key is in the normal sleep mode or the deep sleep mode, any key on the key is pressed, and the key can reenter the normal mode.
The embodiment of the application also provides a power saving management system of the built-in battery of the intelligent key, which comprises: a timer module and a working mode switching module;
the timer module is used for starting a counter to count according to the using stage of the intelligent key;
the working mode switching module is used for switching the working mode of the key, and when the timing in the timer module reaches the set duration and the intelligent key meets the set condition within the set duration, the current working mode of the key is switched to different sleep modes; the setting conditions include: the smart key does not receive any wake-up signal or operation signal, and the key is not in the car. .
The embodiments of the present application further provide a computer readable storage medium, where a computer program is stored, where the computer program includes program instructions, and when the program instructions are executed by a processor, implement each step of the method of the present invention, which is not described herein.
The computer readable storage medium may be the data transmission apparatus provided in any of the foregoing embodiments or an internal storage unit of a computer device, for example, a hard disk or a memory of the computer device. The computer readable storage medium may also be an external storage device of the computer device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card (flash card) or the like, which are provided on the computer device.
Further, the computer-readable storage medium may also include both internal storage units and external storage devices of the computer device. The computer-readable storage medium is used to store the computer program and other programs and data required by the computer device. The computer-readable storage medium may also be used to temporarily store data to be output or already output.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
What is not described in detail in this specification is prior art known to those skilled in the art.

Claims (10)

1. The power saving management method for the built-in battery of the intelligent key is characterized by comprising the following steps of: starting a counter to count according to the use stage of the intelligent key, and switching the current working mode of the intelligent key to a sleep mode when the intelligent key reaches a set time length and the intelligent key meets a set condition within the set time length, wherein the intelligent key corresponds to different use frequencies in different use stages; the setting conditions include: the smart key does not receive any wake-up signal or operation signal, and the smart key is not in the car.
2. The method for power saving management of a built-in battery of a smart key according to claim 1, wherein when the usage period of the smart key is a factory shelf life, a counter sleep_counter1 is started to count time, and if the smart key does not receive a wake-up signal or an operation signal and the smart key is not in a car within a first set period T1, the smart key enters a deep sleep mode.
3. The method for power saving management of a built-in battery of a smart key according to claim 2, wherein if one or more of the following three operations are performed on the smart key within the first set period of time T1, the counter sleep_counter1 counts again from zero:
(1) Pressing an intelligent key, and sending out a high-frequency signal by the key;
(2) Detecting a vehicle-end low-frequency antenna signal and waking up, wherein the intelligent key is legal matched with the vehicle end;
(3) The emergency anti-theft authentication module is activated.
4. The method for managing power saving of a built-in battery of a smart key according to claim 1, wherein when the usage period of the smart key is the whole garage lifetime, a counter sleep_counter1 is started to count, and if the smart key does not receive a wake-up signal or an operation signal within a second set period T2, the smart key enters a deep sleep mode.
5. The method for managing power saving of a built-in battery of a smart key according to claim 1, wherein when the usage period of the smart key is a customer usage period, a counter sleep_counter1 is started to count time, and if the smart key does not receive a wake-up signal or an operation signal and the smart key is not in a car within a first set period of time T1, the smart key enters a normal sleep mode; if the intelligent key does not receive any wake-up signal or operation signal in the third set time period T3 and the intelligent key is not in the vehicle, the intelligent key enters a deep sleep mode.
6. The method for power saving management of a built-in battery of a smart key according to claim 5, wherein the first set time period T1 is smaller than a third set time period T3.
7. The power saving management method of a built-in battery of a smart key according to claim 1, wherein:
the intelligent key is used in the steps of factory storage period, whole garage storage period and customer use period;
when the using stage of the intelligent key is a factory warehouse period, starting a counter sleep_counter1 for timing, and if the intelligent key does not receive a wake-up signal or an operation signal in a first set time period T1 and the intelligent key is not in a vehicle, entering a deep sleep mode by the intelligent key;
when the using stage of the intelligent key is the whole garage life, starting a counter sleep_counter1 for timing, and if the intelligent key does not receive a wake-up signal or an operation signal in a second set time period T2, entering a deep sleep mode by the intelligent key;
when the using stage of the intelligent key is the service period of a customer, starting a counter sleep_counter1 for timing, and if the intelligent key does not receive a wake-up signal or an operation signal in a first set time period T1 and the intelligent key is not in a vehicle, entering a common sleep mode by the intelligent key; if the intelligent key does not receive any wake-up signal or operation signal in the third set time period T3 and the intelligent key is not in the vehicle, the intelligent key enters a deep sleep mode.
8. The method for power saving management of a built-in battery of a smart key according to claim 7, wherein the first set time period T1 is smaller than the second set time period T2, and the second set time period T2 is smaller than the third set time period T3.
9. A power saving management system for a built-in battery of a smart key using the method of claim 1, comprising: a timer module and a working mode switching module;
the timer module is used for starting a counter to count according to the using stage of the intelligent key;
the working mode switching module is used for switching the working mode of the intelligent key, and when the timing in the timer module reaches the set duration and the intelligent key meets the set condition within the set duration, the current working mode of the intelligent key is switched to different sleep modes; the setting conditions include: the smart key does not receive any wake-up signal or operation signal, and the smart key is not in the car.
10. A non-transitory computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the steps of the power saving management method of the smart key built-in battery according to any one of claims 1 to 8.
CN202311429027.8A 2023-10-31 2023-10-31 Electricity-saving management method and system for built-in battery of intelligent key Pending CN117593816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311429027.8A CN117593816A (en) 2023-10-31 2023-10-31 Electricity-saving management method and system for built-in battery of intelligent key

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311429027.8A CN117593816A (en) 2023-10-31 2023-10-31 Electricity-saving management method and system for built-in battery of intelligent key

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Publication Number Publication Date
CN117593816A true CN117593816A (en) 2024-02-23

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