WO2021036227A1 - 一种智能车钥匙节省功耗的方法及系统 - Google Patents

一种智能车钥匙节省功耗的方法及系统 Download PDF

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Publication number
WO2021036227A1
WO2021036227A1 PCT/CN2020/078774 CN2020078774W WO2021036227A1 WO 2021036227 A1 WO2021036227 A1 WO 2021036227A1 CN 2020078774 W CN2020078774 W CN 2020078774W WO 2021036227 A1 WO2021036227 A1 WO 2021036227A1
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modem
soc
bluetooth chip
power consumption
wake
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PCT/CN2020/078774
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English (en)
French (fr)
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吴松坤
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深圳市零点智联科技有限公司
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    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C9/00Individual registration on entry or exit
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02Power saving arrangements
    • H04W52/0209Power saving arrangements in terminal devices
    • H04W52/0251Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0258Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity controlling an operation mode according to history or models of usage information, e.g. activity schedule or time of day
    • GPHYSICS
    • G07CHECKING-DEVICES
    • G07CTIME 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
    • G07C9/00Individual registration on entry or exit
    • G07C9/00174Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00309Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
    • G07C2009/00365Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks in combination with a wake-up circuit
    • G07C2009/0038Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks in combination with a wake-up circuit whereby the wake-up circuit is situated in the keyless data carrier
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the invention relates to a method and system for saving power consumption of an intelligent car key, and belongs to the technical field of car keys.
  • the power supply of the Modem is disconnected by the SoC.
  • This method mainly consumes the SoC.
  • One is that the SoC cannot be shut down, or the SoC is periodically woken up by the RTC, which will cause the power consumption to be too large; 2.
  • the soft shutdown power consumption of the Modem chip Large, the RTC wakes up regularly. Taking AIR208 as an example, the RTC still works after shutting down, the power consumption is 0.4mW, and the power consumption is too large; moreover, the dynamic adjustment strategy of power consumption cannot be achieved.
  • the purpose of the present invention is to provide a method and system for saving power consumption of a smart car key, so as to solve the above-mentioned problems in the background art.
  • the present invention provides the following technical solution: a method for saving power consumption of a smart car key, the method comprising the following steps:
  • Step 101 the SoC is in a shutdown state
  • Step 102 The Bluetooth chip detects the Active Status pin of the SoC to see if it has entered the power-on state. If it is powered on, it proceeds to step 103, and if it is not powered on, it proceeds to step 201;
  • Step 103 Turn on the power supply of the Modem
  • Step 104 the Bluetooth chip detects the Active Status pin of the SoC to see if it is shut down, then it goes to step 105 if it is shut down, and step 103 if it is not shut down;
  • Step 105 The Bluetooth chip detects the Active Status pin of the Modem to see if it is in an active state, if it is not in an active state, go to step 106, and if it is in an active state, continue to detect;
  • Step 106 close the Modem
  • Step 201 Calculate the startup frequency and adjust the Modem wake-up time interval according to whether the current time is in the early morning or not;
  • step 202 whether the time for the Modem to wake up is up, if yes, go to step 103; otherwise, go to step 201.
  • the step 201 calculates the startup frequency and adjusts the modem wake-up time interval according to whether the current time is in the early morning period: if the modem is turned on that day, wake up the Modem once every half an hour during the day, and wake up once every 2 hours during the night; if If it is not turned on that day, the Modem will be woken up once every 2 hours during the day, and once every 4 hours during the night; if there is no machine for 3 consecutive days, the Modem will be woken up every 6 hours during the day; if there is no machine for 5 consecutive days, the Modem will be woken up once a day; if If there is no machine for 7 consecutive days, the Modem will no longer wake up, and the Bluetooth chip will automatically shut down.
  • the late night time period and the early morning time period respectively refer to the time period from 0:00 to 6:30 in the case of a 24-hour system.
  • a system for saving power consumption of a smart car key includes a Modem and a Bluetooth chip used to detect whether the SoC and the Modem are off and/or active.
  • the Bluetooth chip, SoC and Modem include a standby state in which the SoC and Modem are turned off respectively, and the Bluetooth chip is not turned off.
  • the Bluetooth chip detects that the SoC is turned on and then supplies power to the Modem.
  • the Bluetooth chip is notified, if the Bluetooth chip detects that the SoC has been shut down, the Modem power supply is turned off; if the Bluetooth chip detects that the SoC is not shut down, the Modem power supply is continued to be maintained.
  • the Bluetooth chip when the Bluetooth chip, SoC and Modem are in a standby state, the Bluetooth chip will turn on the Modem regularly in order to obtain the latest data.
  • the Bluetooth chip determines the time interval for waking up the Modem according to the frequency at which the SoC is turned on.
  • the present invention has the following beneficial effects: using the Bluetooth chip's inactive and low power consumption characteristics, the Bluetooth chip realizes a flexible power consumption adjustment strategy, realizes that the Modem saves power consumption and can update vehicle data in time, and finally achieves Two goals of power saving and timeliness.
  • Figure 1 is a schematic diagram of the composition structure of the present invention.
  • Fig. 2 is a logic table when the BLE is notified after the SoC is activated, and the BLE turns on the Modem power supply.
  • Figure 3 is a schematic flow chart of the present invention.
  • a method for saving power consumption of a smart car key includes the following steps:
  • Step 101 the SoC is in a shutdown state
  • Step 102 The Bluetooth chip detects the Active Status pin of the SoC to see if it has entered a boot (activated) state, if it is powered on, it proceeds to step 103, and if it is not powered on, it proceeds to step 201;
  • Step 103 Turn on the power supply of the Modem
  • Step 104 The Bluetooth chip detects the Active Status pin (status) of the SoC to see if it is shut down, then it goes to step 105 if it is shut down, and it goes to step 103 if it is not shut down;
  • Step 105 The Bluetooth chip detects the Active Status pin (status) of the Modem to see if it is in an active state, if it is not in an active state, go to step 106, and if it is in an active state, continue to detect;
  • Active Status pin status pin
  • Step 106 close the Modem
  • Step 201 Calculate the startup frequency and adjust the Modem wake-up time interval according to whether the current time is in the early morning period;
  • step 202 whether the time for the Modem to wake up is up, if yes, go to step 103; otherwise, go to step 201.
  • the specific method for calculating the startup frequency and adjusting the interval of the Modem wake-up time according to whether the current time is in the early morning period is: if there is a boot on the same day, wake up the Modem once in half an hour during the day, and wake up once in 2 hours during the midnight period; if If it is not turned on that day, the Modem will be woken up once every 2 hours during the day, and once every 4 hours during the night; if there is no machine for 3 consecutive days, the Modem will be woken up every 6 hours during the day; if there is no machine for 5 consecutive days, the Modem will be woken up once a day; if If there is no machine for 7 consecutive days, the Modem will no longer wake up, and the Bluetooth chip will automatically shut down.
  • the late night time period and the early morning time period respectively refer to the time period from 0:00 to 6:30 in the case of a 24-hour system.
  • a system for saving power consumption of a smart car key includes a Modem and a Bluetooth chip used to detect whether the SoC and the Modem are off and/or active.
  • the Bluetooth chip, SoC and Modem include a standby state in which the SoC and Modem are turned off respectively, and the Bluetooth chip is not turned off.
  • the Bluetooth chip detects that the SoC is turned on and then supplies power to the Modem.
  • the Bluetooth chip is notified, if the Bluetooth chip detects that the SoC is shut down, the Modem power supply is turned off; if the Bluetooth chip detects that the SoC is not shut down, the Modem power supply is continued to be maintained.
  • the Bluetooth chip when the Bluetooth chip, SoC and Modem are in a standby state, the Bluetooth chip will turn on the Modem regularly in order to obtain the latest data.
  • the Bluetooth chip determines the time interval for waking up the Modem according to the frequency at which the SoC is turned on. Preferably, the fewer the number of times the system is turned on, the interval for waking up the Modem will be prolonged; the way of waking up includes a late night mode.
  • the SoC informs the BLE and Modem through Active Status that the SoC has been closed, so please do not have data interaction.
  • BLE checks the Active Status of the Modem, and when it knows that the Modem is not active, it turns off the power supply of the Modem through Power Off.
  • the system of the present invention is composed of SoC, BLE chip and Modem (2G, 4G) chip; SoC and Modem are all shut down during standby, and the BLE chip does not shut down.
  • the power consumption of the BLE chip is about 0.06mW when there is no radio frequency operation and IO operation, so the BLE chip can not be shut down.
  • One advantage is to ensure that the BLE can handle key interrupts in time, and can also adjust the power supply of the network chip; the Bluetooth chip detects the SoC After power on, power the Modem; when there is no network data activity on the Modem, notify the Bluetooth chip.
  • the Bluetooth chip detects that the SoC is turned off, turn off the power supply of the Modem; if the Bluetooth chip detects that the SoC is not turned off, continue to maintain the power supply of the Modem; in order to ensure the vehicle The timeliness of status update.
  • the Bluetooth chip will periodically deactivate the Modem in order to obtain the latest data; the Bluetooth chip will determine the time interval for waking up the Modem according to the frequency of SoC startup; the fewer the system startup times, the longer it will be The interval between waking up the Modem; the wake-up strategy also has a late night mode, that is, from 0:00 to 3:1 in the morning, and the time for waking up the Modem can be extended.
  • the present invention realizes that the smart car key saves more power consumption in terms of system architecture, modem switch strategy and other aspects.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
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Abstract

一种智能车钥匙节省功耗的方法及系统,方法包含下述步骤:步骤101,SoC处于关机状态;步骤102,蓝牙芯片检测SoC的Active Status脚,看其是否开机,有开机则进入步骤103,未开机则进入步骤201;步骤103,打开Modem的供电;步骤104,蓝牙芯片检测SoC的Active Status脚,看其是否关机,关机则进入步骤105,未关机则进入步骤103;步骤105,蓝牙芯片检测Modem的Active Status脚,看其是否处于活动状态,如果未处于活动状态则进入步骤106,如果处于活动状态则继续检测;步骤106,关闭Modem;步骤201,计算开机频率以及根据当前时间是否凌晨时段,调节Modem唤醒时间间隔;步骤202,Modem唤醒的时间是否到时,是则转步骤103,否则转步骤201。该系统包含Modem、Soc和用于检测SoC和Modem是否关机和/或活动状态的蓝牙芯片。

Description

一种智能车钥匙节省功耗的方法及系统 技术领域
本发明涉及一种智能车钥匙节省功耗的方法及系统,属于汽车钥匙技术领域。
背景技术
目前车钥匙比较流行的方案是,由SoC控制Modem的供电。
技术问题
1、由SoC断开Modem的供电,这个方法主要消耗体现在SoC,一个是SoC不可以关机,或者SoC由RTC定时唤醒,这些都会造成功耗偏大;2、Modem芯片的软关机功耗偏大,由RTC定时唤醒,以AIR208为例,关机后RTC还工作,功耗是0.4mW,功耗也是偏大;而且,还不能做到功耗的动态调节策略。
问题的解决方案
技术解决方案
本发明的目的在于提供一种智能车钥匙节省功耗的方法及系统,以解决上述背景技术中提出的问题。
为实现上述目的,本发明提供如下技术方案:一种智能车钥匙节省功耗的方法,所述方法包含下述步骤:
步骤101,SoC处于关机状态;
步骤102,蓝牙芯片检测SoC的Active Status脚,看其是否有进入开机状态,有开机则进入步骤103,未开机则进入步骤201;
步骤103,打开Modem的供电;
步骤104,蓝牙芯片检测SoC的Active Status脚,看其是否关机,关机则进入步骤105,未关机则进入步骤103;
步骤105,蓝牙芯片检测Modem的Active Status脚,看其是否处于活动状态,如果未处于活动状态则进入步骤106,如果处于活动状态则继续检测;
步骤106,关闭Modem;
步骤201,计算开机频率以及根据当前时间是否凌晨时段,调节Modem唤醒时 间间隔;
步骤202,Modem唤醒的时间是否到时,是则转步骤103,否则转步骤201。
优选地,所述步骤201计算开机频率以及根据当前时间是否凌晨时段,调节Modem唤醒时间间隔的具体方式为:如果当天有开机,则白天半小时唤醒一次Modem,深夜时段,2小时唤醒一次;如果当天没开机,则白天2小时唤醒一次Modem,深夜时段,4小时唤醒一次;如果连续3天没机,则白天6小时唤醒一次Modem;如果连续5天没机,则1天唤醒一次Modem;如果连续7天没机,则不再唤醒Modem,且蓝牙芯片自动关机。
优选地,所述深夜时段和凌晨时段分别指在24小时制的情况下0:00-6:30的时段。
一种智能车钥匙节省功耗的系统,所述系统包含Modem和用于检测SoC和Modem是否关机和/或活动状态的蓝牙芯片。
优选地,所述蓝牙芯片、SoC和Modem包含SoC和Modem分别关机,蓝牙芯片不关机的待机状态。
优选地,所述蓝牙芯片、SoC和Modem处于待机状态时,蓝牙芯片检测到SoC开机后,给Modem供电。
优选地,所述当Modem无网络数据活动时,通知蓝牙芯片,如果蓝牙芯片检测SoC已关机,则关闭Modem供电;如果蓝牙芯片检测SoC未关机,则继续保持Modem的供电。
优选地,所述蓝牙芯片、SoC和Modem处于待机状态时,蓝牙芯片会定时去开机Modem,以便获得最新的数据。
优选地,所述蓝牙芯片会根据SoC开机的频率,决定唤醒Modem的时间间隔。
优选地,所述系统开机次数越少,则会延长唤醒Modem的间隔;唤醒的方式包含深夜模式。
发明的有益效果
有益效果
与现有技术相比,本发明的有益效果是:利用蓝牙芯片无活动低功耗的特性,由蓝牙芯片实现灵活的功耗调节策略,实现Modem节省功耗并能及时更新车辆 数据,最终达到节省功耗和及时性两个目标。
对附图的简要说明
附图说明
图1为本发明组成架构示意图。
图2为本发明SoC激活后,通知BLE,BLE开启Modem供电时的逻辑表。
图3为本发明的流程示意图。
实施该发明的最佳实施例
本发明的最佳实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
请参阅说明书附图,本发明提供一种技术方案:一种智能车钥匙节省功耗的方法,所述方法包含下述步骤:
步骤101,SoC处于关机状态;
步骤102,蓝牙芯片检测SoC的Active Status脚,看其是否有进入开机(激活)状态,有开机则进入步骤103,未开机则进入步骤201;
步骤103,打开Modem的供电;
步骤104,蓝牙芯片检测SoC的Active Status脚(状态),看其是否关机,关机则进入步骤105,未关机则进入步骤103;
步骤105,蓝牙芯片检测Modem的Active Status脚(状态),看其是否处于活动状态,如果未处于活动状态则进入步骤106,如果处于活动状态则继续检测;
步骤106,关闭Modem;
步骤201,计算开机频率以及根据当前时间是否凌晨时段,调节Modem唤醒时间间隔;
步骤202,Modem唤醒的时间是否到时,是则转步骤103,否则转步骤201。
优选地,所述计算开机频率以及根据当前时间是否凌晨时段,调节Modem唤醒的时间的间隔的具体方式为:如果当天有开机,则白天半小时唤醒一次Modem ,深夜时段,2小时唤醒一次;如果当天没开机,则白天2小时唤醒一次Modem,深夜时段,4小时唤醒一次;如果连续3天没机,则白天6小时唤醒一次Modem;如果连续5天没机,则1天唤醒一次Modem;如果连续7天没机,则不再唤醒Modem,且蓝牙芯片自动关机。
优选地,所述深夜时段和凌晨时段分别指在24小时制的情况下0:00-6:30的时段。
一种智能车钥匙节省功耗的系统,所述系统包含Modem和用于检测SoC和Modem是否关机和/或活动状态的蓝牙芯片。
优选地,所述蓝牙芯片、SoC和Modem包含SoC和Modem分别关机,蓝牙芯片不关机的待机状态。
优选地,所述蓝牙芯片、SoC和Modem处于待机状态时,蓝牙芯片检测到SoC开机后,给Modem供电。
优选地,所述当Modem无网络数据活动时,通知蓝牙芯片,如果蓝牙芯片检测SoC已关机,则关闭Modem供电;如果蓝牙芯片检测SoC未关机,则继续保持Modem的供电。
优选地,所述蓝牙芯片、SoC和Modem处于待机状态时,蓝牙芯片会定时去开机Modem,以便获得最新的数据。
优选地,所述蓝牙芯片会根据SoC开机的频率,决定唤醒Modem的时间间隔。优选地,所述系统开机次数越少,则会延长唤醒Modem的间隔;唤醒的方式包含深夜模式。
本发明待机状机状态时,SoC通过Active Status通知BLE和Modem,SoC已经关闭,请不要有数据交互。BLE检查Modem的Active Status,当得知Modem没活动时,通过Power Off关闭Modem供电。
本发明系统由SoC、BLE芯片和Modem(2G、4G)芯片组成;待机时SoC和Modem全部关机,BLE芯片不关机。BLE芯片在无射频操作和IO操作时,功耗是0.06mW左右,所以可以让BLE芯片不关机,好处一个是保证BLE能及时处理按键中断,还可以调节网络芯片的供电;蓝牙芯片检测到SoC开机后,给Modem供电;当Modem无网络数据活动时,通知蓝牙芯片,如果蓝牙芯片检测SoC已关机,则 关闭Modem供电;如果蓝牙芯片检测SoC未关机,则继续保持Modem的供电;为了保证车辆状态更新的及时性,系统在待机后,蓝牙芯片会定时去激活Modem,以便获得最新的数据;蓝牙芯片会根据SoC开机的频率,决定唤醒Modem的时间间隔;系统开机次数越少,则会延长唤醒Modem的间隔;唤醒的策略还有个深夜模式,即凌晨0:00~6:30,可以再延长唤醒Modem的时间。本发明,从系统架构,和Modem开关策略等多方面实现让智能车钥匙更节省功耗。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
工业实用性
可以用现代工业手段实现,具有工业实用性。

Claims (10)

  1. 一种智能车钥匙节省功耗的方法,其特征在于,所述方法包含下述步骤:
    步骤101,SoC处于关机状态;
    步骤102,蓝牙芯片检测SoC的Active Status脚,看其是否有进入开机状态,有开机则进入步骤103,未开机则进入步骤201;
    步骤103,打开Modem的供电;
    步骤104,蓝牙芯片检测SoC的Active Status脚,看其是否关机,关机则进入步骤105,未关机则进入步骤103;
    步骤105,蓝牙芯片检测Modem的Active Status脚,看其是否处于活动状态,如果未处于活动状态则进入步骤106,如果处于活动状态则继续检测;
    步骤106,关闭Modem;
    步骤201,计算开机频率以及根据当前时间是否凌晨时段,调节Modem唤醒时间间隔;
    步骤202,Modem唤醒的时间是否到时,是则转步骤103,否则转步骤201。
  2. 根据权利要求1所述的智能车钥匙节省功耗的方法,其特征在于,所述步骤201计算开机频率以及根据当前时间是否凌晨时段,调节Modem唤醒时间间隔的具体方式为:如果当天有开机,则白天半小时唤醒一次Modem,深夜时段,2小时唤醒一次;如果当天没开机,则白天2小时唤醒一次Modem,深夜时段,4小时唤醒一次;如果连续3天没机,则白天6小时唤醒一次Modem;如果连续5天没机,则1天唤醒一次Modem;如果连续7天没机,则不再唤醒Modem,且蓝牙芯片自动关机。
  3. 根据权利要求2所述的智能车钥匙节省功耗的方法,其特征在于:所述深夜时段和凌晨时段分别指在24小时制的情况下0:00-6:30的时段。
  4. 一种智能车钥匙节省功耗的系统,其特征在于:所述系统包含Modem和用于检测SoC和Modem是否关机和/或活动状态的蓝牙芯片。
  5. 根据权利要求4所述的智能车钥匙节省功耗的系统,其特征在于:所述蓝牙芯片、SoC和Modem包含SoC和Modem分别关机,蓝牙芯片不关机的待机状态。
  6. 根据权利要求5所述的智能车钥匙节省功耗的系统,其特征在于:所述蓝牙芯片、SoC和Modem处于待机状态时,蓝牙芯片检测到SoC开机后,给Modem供电。
  7. 根据权利要求6所述的智能车钥匙节省功耗的系统,其特征在于:所述当Modem无网络数据活动时,通知蓝牙芯片,如果蓝牙芯片检测SoC已关机,则关闭Modem供电;如果蓝牙芯片检测SoC未关机,则继续保持Modem的供电。
  8. 根据权利要求7所述的智能车钥匙节省功耗的系统,其特征在于:所述蓝牙芯片、SoC和Modem处于待机状态时,蓝牙芯片会定时去开机Modem,以便获得最新的数据。
  9. 根据权利要求8所述的智能车钥匙节省功耗的系统,其特征在于:所述蓝牙芯片会根据SoC开机的频率,决定唤醒Modem的时间间隔。
  10. 根据权利要求9所述的智能车钥匙节省功耗的系统,其特征在于:所述系统开机次数越少,则会延长唤醒Modem的间隔;所述唤醒的方式包含深夜模式。
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