CN111555947B - MCU low-power consumption dormancy awakening system - Google Patents
MCU low-power consumption dormancy awakening system Download PDFInfo
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- 230000005059 dormancy Effects 0.000 title abstract description 10
- 238000007781 pre-processing Methods 0.000 claims abstract description 66
- 230000007958 sleep Effects 0.000 claims abstract description 13
- 230000003993 interaction Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
- H04L67/125—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks involving control of end-device applications over a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
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Abstract
The invention provides a low-power consumption dormancy awakening system of an MCU (microprogrammed control unit), which comprises: the device comprises a storage battery, a CAN power supply module, a CAN network upper computer, a weak current switch, a CAN module, an MCU system power supply module, a voltage preprocessing module and an MCU control module. The MCU control module receives power supply of the MCU system power module to supply power, and the power supply is switched from a dormant state to an awakening state; if the MCU control module receives a high level or receives power supply enabling data as power supply output, the MCU control module outputs a high level enabling signal to the MCU system power supply module; after the MCU control module is awakened, if the MCU control module receives a low level or receives power supply enabling data as power supply prohibition, a low level enabling signal is output to the MCU system power supply module, the CAN module outputs a low level enabling signal to the MCU system power supply module, the MCU system power supply module prohibits power supply output to the MCU control module and the voltage preprocessing module, and the MCU control module is in a state from awakening to sleeping. The invention can obviously reduce the sleep power consumption in the sleep state.
Description
Technical Field
The invention relates to research on dormancy and awakening of a motor controller, in particular to an MCU low-power-consumption dormancy awakening system.
Background
With the increasing complexity of automobile functions and electronic systems, more and more power supply nodes are provided for normal electricity. Modern automobile CAN networks mostly follow OSEK direct network management protocol to realize dormancy and awakening of normally powered CAN nodes. Generally, the quiescent current of the whole vehicle is one tenth or even one hundredth of the wake-up state.
However, in the existing scheme, the MCU main control chip is in a sleep mode, but some main control peripheral devices still operate, resulting in low power consumption. Therefore, the scheme mainly uses a new logic scheme to power off the MCU, and the CAN module is adopted to monitor signals, so that the power consumption is low enough.
Disclosure of Invention
The invention aims to solve the problem of how to realize the dormancy and the awakening of the MCU and the extremely low power consumption of the dormancy under the condition of using hardware topology to match with software.
In order to solve the problem, the invention provides an MCU low-power consumption dormancy awakening system, which is characterized by comprising: the system comprises a storage battery, a CAN power supply module, a CAN network upper computer, a weak current switch, a CAN module, an MCU system power supply module, a voltage preprocessing module and an MCU control module;
the storage battery is connected with the CAN power module in a wired mode; the CAN network upper computer is connected with the CAN module in a wired mode; the weak current switch is respectively connected with the CAN module and the voltage preprocessing module in sequence in a wired mode; the voltage preprocessing module is connected with the MCU control module in a wired mode; the CAN power module is connected with the CAN module in a wired mode; the CAN module is connected with an enabling input pin of the MCU system power supply module in a wired mode; the power supply output pin of the MCU system power supply module is respectively connected with the voltage preprocessing module and the MCU control module in a wired mode; the MCU control module is connected with an enabling input pin of the MCU system power supply module in a wired mode; the CAN module is connected with the MCU control module in a wired mode.
Preferably, the storage battery is used for supplying power to the CAN power module;
preferably, the CAN power module is used for supplying power to the CAN module;
preferably, the CAN network upper computer transmits power supply enabling control data to the CAN module in a CAN communication mode;
preferably, the weak current switch is used for outputting a switch control signal to the CAN module and the voltage preprocessing module;
preferably, the CAN module receives power supply enabling control data and a switch control signal; if the power supply enabling control data is power supply output enabling, the CAN module outputs a high-level enabling signal to the MCU system power supply module; if the power supply enabling control data is power supply disabling enabling, the CAN module outputs a low level enabling signal to the MCU system power supply module; if the switch control signal is at a high level, the CAN module outputs a high level enabling signal to the MCU system power supply module; if the switch control signal is at a low level, the CAN module outputs a low level enabling signal to the MCU system power supply module;
preferably, if an enable input pin of the MCU system power module receives a high level enable signal, a power supply output pin of the MCU system power module outputs power to the MCU control module and the voltage preprocessing module; if the enable input pin of the MCU system power supply module receives a low level enable signal, the power supply output pin of the MCU system power supply module prohibits outputting power to the MCU control module and the voltage preprocessing module;
preferably, the voltage preprocessing module receives a power supply to supply power, compares the switch control signal with a voltage threshold value, and outputs a high level to the MCU control module if the switch control signal is greater than the voltage threshold value; if the switch control signal is less than or equal to the voltage threshold, the voltage preprocessing module outputs a low level to the MCU control module;
preferably, the MCU control module receives power supply of the MCU system power module to supply power, and performs data interaction with the CAN module in a CAN communication mode from a dormant state to an awakening state; if the MCU control module receives that the output of the voltage preprocessing module is a high level, the MCU control module outputs a high level enable signal to an enable input pin of the MCU system power supply module; the CAN module receives power supply enabling control data, and if the power supply enabling control data are power supply output enabling, the MCU control module receives the power supply enabling control data transmitted by the CAN module in a CAN communication mode, and then the MCU control module outputs a high-level enabling signal to an enabling input pin of the MCU system power supply module;
after the MCU control module is awakened, if the received voltage preprocessing module output is a low level, a low level enabling signal is output to an enabling input pin of the MCU system power module, the CAN module outputs the low level enabling signal to the MCU system power module, a power supply output pin of the MCU system power module prohibits power supply from being output to the MCU control module and the voltage preprocessing module, and the MCU control module is switched from an awakening state to a sleeping state;
after the MCU control module wakes up, the CAN module receives power supply enabling control data, if the power supply enabling control data is forbidden to enable by the power supply, the CAN module outputs a low level enabling signal to the MCU system power module, the CAN module transmits the power supply enabling control data to the MCU control module in a CAN communication mode, the MCU control module outputs a low level enabling signal to an enabling input pin of the MCU system power module, the power supply output pin of the MCU system power module forbids to output the power supply to the MCU control module and the voltage preprocessing module, and the MCU control module is in a wake-up state to a sleep state.
The invention has the advantage that the invention can obviously reduce the sleep power consumption in the sleep state.
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FIG. 1: the invention is a system structure block diagram.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, which is a block diagram of a system structure of the present invention, a low-power consumption sleep wake-up system for MCU is characterized in that it includes: the system comprises a storage battery, a CAN power supply module, a CAN network upper computer, a weak current switch, a CAN module, an MCU system power supply module, a voltage preprocessing module and an MCU control module;
the storage battery is connected with the CAN power module in a wired mode; the CAN network upper computer is connected with the CAN module in a wired mode; the weak current switch is respectively connected with the CAN module and the voltage preprocessing module in sequence in a wired mode; the voltage preprocessing module is connected with the MCU control module in a wired mode; the CAN power module is connected with the CAN module in a wired mode; the CAN module is connected with an enabling input pin of the MCU system power supply module in a wired mode; the power supply output pin of the MCU system power supply module is respectively connected with the voltage preprocessing module and the MCU control module in a wired mode; the MCU control module is connected with an enabling input pin of the MCU system power supply module in a wired mode; the CAN module is connected with the MCU control module in a wired mode.
The storage battery is used for supplying power to the CAN power module;
the CAN power supply module is used for supplying power to the CAN module;
the CAN network upper computer transmits power supply enabling control data to the CAN module in a CAN communication mode;
the weak current switch is used for outputting a switch control signal to the CAN module and the voltage preprocessing module;
the CAN module receives power supply enabling control data and a switch control signal; if the power supply enabling control data is power supply output enabling, the CAN module outputs a high-level enabling signal to the MCU system power supply module; if the power supply enabling control data is power supply disabling enabling, the CAN module outputs a low level enabling signal to the MCU system power supply module; if the switch control signal is at a high level, the CAN module outputs a high level enabling signal to the MCU system power supply module; if the switch control signal is at a low level, the CAN module outputs a low level enabling signal to the MCU system power supply module;
if the enable input pin of the MCU system power supply module receives a high-level enable signal, the power supply output pin of the MCU system power supply module outputs power to the MCU control module and the voltage preprocessing module; if the enable input pin of the MCU system power supply module receives a low level enable signal, the power supply output pin of the MCU system power supply module prohibits outputting power to the MCU control module and the voltage preprocessing module;
the voltage preprocessing module receives a power supply to supply power, compares a switch control signal with a voltage threshold value, and outputs a high level to the MCU control module if the switch control signal is greater than the voltage threshold value; if the switch control signal is less than or equal to the voltage threshold, the voltage preprocessing module outputs a low level to the MCU control module;
the MCU control module receives power supply of the MCU system power module to supply power, and carries out data interaction with the CAN module in a CAN communication mode from a dormant state to an awakening state; if the MCU control module receives that the output of the voltage preprocessing module is a high level, the MCU control module outputs a high level enable signal to an enable input pin of the MCU system power supply module; the CAN module receives power supply enabling control data, and if the power supply enabling control data are power supply output enabling, the MCU control module receives the power supply enabling control data transmitted by the CAN module in a CAN communication mode, and then the MCU control module outputs a high-level enabling signal to an enabling input pin of the MCU system power supply module;
after the MCU control module is awakened, if the received voltage preprocessing module output is a low level, a low level enabling signal is output to an enabling input pin of the MCU system power module, the CAN module outputs the low level enabling signal to the MCU system power module, a power supply output pin of the MCU system power module prohibits power supply from being output to the MCU control module and the voltage preprocessing module, and the MCU control module is switched from an awakening state to a sleeping state;
after the MCU control module wakes up, the CAN module receives power supply enabling control data, if the power supply enabling control data is forbidden to enable by the power supply, the CAN module outputs a low level enabling signal to the MCU system power module, the CAN module transmits the power supply enabling control data to the MCU control module in a CAN communication mode, the MCU control module outputs a low level enabling signal to an enabling input pin of the MCU system power module, the power supply output pin of the MCU system power module forbids to output the power supply to the MCU control module and the voltage preprocessing module, and the MCU control module is in a wake-up state to a sleep state.
The storage battery type is a general vehicle-mounted 12V storage battery; the CAN power supply module is selected to be MPQ9840 GL; the CAN network upper computer is selected from a computer and a self-grinding upper computer; the weak current switch is a common single-point switch; the CAN module is TJA1043 in type selection; the MCU system power module is a self-built flyback power supply mainly based on LM3481 and mainly comprises 5V,3.3V and 1.9V; the voltage preprocessing module is selected to be TLP185 GB; the MCU control module is TMS320F28335 in a model selection mode;
the embodiment of the invention comprises the following steps: a first embodiment, a second embodiment;
the first embodiment realizes the sleep awakening of the MCU control module through the weak current switch, and specifically comprises the following steps:
the weak current switch is closed, the storage battery outputs a switch control signal to the CAN module and the voltage preprocessing module through the weak current switch, and the switch control signal is a high-level signal at the moment;
the storage battery continuously outputs power to the CAN power module, and the CAN power module continuously outputs power to the CAN module;
the CAN module receives a switch control signal output by the weak current switch; if the switch control signal is at a high level, the CAN module outputs a high-level enabling signal to the MCU system power supply module;
an enabling input pin of the MCU system power supply module receives a high-level enabling signal output by the CAN module, and a power supply output pin of the MCU system power supply module outputs power to the MCU control module and the voltage preprocessing module;
the voltage preprocessing module receives a power supply output by a power supply output pin of the MCU system power supply module, compares a switch control signal with a voltage threshold value, and outputs a high level to the MCU control module if the switch control signal is greater than the voltage threshold value;
the MCU control module receives a power supply output by a power supply output pin of the MCU system power supply module and enters an awakening state from a dormant state; the MCU control module receives the high level output by the voltage preprocessing module, and then outputs a high level enabling signal to an enabling input pin of the MCU system power supply module;
the weak current switch is switched off, the storage battery outputs a switch control signal to the CAN module and the voltage preprocessing module through the weak current switch, and the switch control signal is a low level signal at the moment;
the CAN module receives a switch control signal, and the switch control signal is at a low level, so that the CAN module outputs a low level enabling signal to the MCU system power supply module;
an enabling input pin of the MCU system power supply module receives a low level enabling signal output by the CAN module, and a power supply output pin of the MCU system power supply module still outputs power to the MCU control module and the voltage preprocessing module because the enabling input pin of the MCU system power supply module still receives a high level enabling signal output by the MCU control module;
the voltage preprocessing module receives a switch control signal, compares the switch control signal with a voltage threshold value, and outputs a low level to the MCU control module if the switch control signal is less than or equal to the voltage threshold value;
the MCU control module receives the low level output by the voltage preprocessing module, and then outputs a low level enabling signal to an enabling input pin of the MCU system power supply module;
an enabling input pin of the MCU system power supply module receives a low-level enabling signal of the MCU control module, a power supply output pin of the MCU system power supply module prohibits outputting power to the MCU control module and the voltage preprocessing module, and the MCU control module enters a dormant state from a wake-up state;
the second embodiment realizes the dormancy awakening of the MCU control module through the CAN network upper computer, and specifically comprises the following steps:
the CAN network upper computer outputs power supply enabling control data to the CAN module, and the power supply enabling control data is power supply output enabling;
the storage battery continuously outputs power to the CAN power module, and the CAN power module continuously outputs power to the CAN module;
the CAN module receives power supply enabling control data output by the CAN network upper computer, and the CAN module outputs a high-level enabling signal to the MCU system power supply module because the power supply enabling control data is power supply output enabling;
an enabling input pin of the MCU system power supply module receives a high-level enabling signal output by the CAN module, and a power supply output pin of the MCU system power supply module outputs power to the voltage preprocessing module and the MCU control module;
the MCU control module receives a power supply output by a power supply output pin of the MCU system power supply module and changes from a dormant state to an awakening state; the CAN module transmits power supply enabling control data to the MCU control module in a CAN communication mode, and the MCU control module outputs a high-level enabling signal to an enabling input pin of the MCU system power module because the power supply enabling control data are power supply output enabling;
the CAN network upper computer outputs power supply enabling control data to the CAN module again, and the power supply enabling control data is converted into power supply disabling;
the CAN module obtains power supply enabling control data output by the CAN network upper computer and transmits the power supply enabling control data to the CAN module, and the CAN module outputs a low-level enabling signal to the MCU system power module because the power supply enabling control data is power supply disabling;
an enabling input pin of the MCU system power supply module receives a low level enabling signal output by the CAN module, but the enabling input pin of the MCU system power supply module still receives a high level enabling signal output by the MCU control module, and a power supply output pin of the MCU system power supply module still outputs power to the voltage preprocessing module and the MCU control module;
the CAN module transmits power supply enabling control data to the MCU control module in a CAN communication mode, and the MCU control module outputs a low-level enabling signal to an enabling input pin of the MCU system power module because the power supply enabling control data is power supply disabling;
and an enabling input pin of the MCU system power supply module receives a low level enabling signal output by the MCU control module, a power supply output pin of the MCU system power supply module prohibits power supply output to the voltage preprocessing module and the MCU control module, and the MCU control module is switched from a wake-up state to a sleep state.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or scope of the invention as defined in the appended claims.
Claims (2)
1. An MCU low-power sleep wake-up system, comprising:
the system comprises a storage battery, a CAN power supply module, a CAN network upper computer, a weak current switch, a CAN module, an MCU system power supply module, a voltage preprocessing module and an MCU control module;
the storage battery is connected with the CAN power module in a wired mode; the CAN network upper computer is connected with the CAN module in a wired mode; the weak current switch is respectively connected with the CAN module and the voltage preprocessing module in sequence in a wired mode; the voltage preprocessing module is connected with the MCU control module in a wired mode; the CAN power module is connected with the CAN module in a wired mode; the CAN module is connected with an enabling input pin of the MCU system power supply module in a wired mode; the power supply output pin of the MCU system power supply module is respectively connected with the voltage preprocessing module and the MCU control module in a wired mode; the MCU control module is connected with an enabling input pin of the MCU system power supply module in a wired mode; the CAN module is connected with the MCU control module in a wired mode;
the storage battery is used for supplying power to the CAN power module;
the CAN power supply module is used for supplying power to the CAN module;
the CAN network upper computer transmits power supply enabling control data to the CAN module in a CAN communication mode;
the weak current switch is used for outputting a switch control signal to the CAN module and the voltage preprocessing module;
the CAN module receives power supply enabling control data and a switch control signal; if the power supply enabling control data is power supply output enabling, the CAN module outputs a high-level enabling signal to the MCU system power supply module; if the power supply enabling control data is power supply disabling enabling, the CAN module outputs a low level enabling signal to the MCU system power supply module; if the switch control signal is at a high level, the CAN module outputs a high level enabling signal to the MCU system power supply module; if the switch control signal is at a low level, the CAN module outputs a low level enabling signal to the MCU system power supply module;
if the enable input pin of the MCU system power supply module receives a high-level enable signal, the power supply output pin of the MCU system power supply module outputs power to the MCU control module and the voltage preprocessing module; if the enable input pin of the MCU system power supply module receives a low level enable signal, the power supply output pin of the MCU system power supply module prohibits outputting power to the MCU control module and the voltage preprocessing module;
the voltage preprocessing module receives a power supply to supply power, compares a switch control signal with a voltage threshold value, and outputs a high level to the MCU control module if the switch control signal is greater than the voltage threshold value; if the switch control signal is less than or equal to the voltage threshold, the voltage preprocessing module outputs a low level to the MCU control module;
the MCU control module receives power supply of the MCU system power module to supply power, and carries out data interaction with the CAN module in a CAN communication mode from a dormant state to an awakening state; if the MCU control module receives that the output of the voltage preprocessing module is a high level, the MCU control module outputs a high level enable signal to an enable input pin of the MCU system power supply module; the CAN module receives power supply enabling control data, and if the power supply enabling control data are power supply output enabling, the MCU control module receives the power supply enabling control data transmitted by the CAN module in a CAN communication mode, and then the MCU control module outputs a high-level enabling signal to an enabling input pin of the MCU system power supply module;
after the MCU control module is awakened, if the received voltage preprocessing module output is a low level, a low level enabling signal is output to an enabling input pin of the MCU system power module, the CAN module outputs the low level enabling signal to the MCU system power module, a power supply output pin of the MCU system power module prohibits power supply from being output to the MCU control module and the voltage preprocessing module, and the MCU control module is switched from an awakening state to a sleeping state;
after the MCU control module wakes up, the CAN module receives power supply enabling control data, if the power supply enabling control data is forbidden to enable by the power supply, the CAN module outputs a low level enabling signal to the MCU system power module, the CAN module transmits the power supply enabling control data to the MCU control module in a CAN communication mode, the MCU control module outputs a low level enabling signal to an enabling input pin of the MCU system power module, the power supply output pin of the MCU system power module forbids to output the power supply to the MCU control module and the voltage preprocessing module, and the MCU control module is in a wake-up state to a sleep state.
2. An MCU low-power consumption sleep-wake method applied to the MCU low-power consumption sleep-wake system according to claim 1, characterized in that:
if the alarm is awakened through the weak current switch;
the weak current switch is closed, the storage battery outputs a switch control signal to the CAN module and the voltage preprocessing module through the weak current switch, and the switch control signal is a high-level signal at the moment;
the storage battery continuously outputs power to the CAN power module, and the CAN power module continuously outputs power to the CAN module;
the CAN module receives a switch control signal output by the weak current switch; if the switch control signal is at a high level, the CAN module outputs a high-level enabling signal to the MCU system power supply module;
an enabling input pin of the MCU system power supply module receives a high-level enabling signal output by the CAN module, and a power supply output pin of the MCU system power supply module outputs power to the MCU control module and the voltage preprocessing module;
the voltage preprocessing module receives a power supply output by a power supply output pin of the MCU system power supply module, compares a switch control signal with a voltage threshold value, and outputs a high level to the MCU control module if the switch control signal is greater than the voltage threshold value;
the MCU control module receives a power supply output by a power supply output pin of the MCU system power supply module and enters an awakening state from a dormant state; the MCU control module receives the high level output by the voltage preprocessing module, and then outputs a high level enabling signal to an enabling input pin of the MCU system power supply module;
the weak current switch is switched off, the storage battery outputs a switch control signal to the CAN module and the voltage preprocessing module through the weak current switch, and the switch control signal is a low level signal at the moment;
the CAN module receives a switch control signal, and the switch control signal is at a low level, so that the CAN module outputs a low level enabling signal to the MCU system power supply module;
an enabling input pin of the MCU system power supply module receives a low level enabling signal output by the CAN module, and a power supply output pin of the MCU system power supply module still outputs power to the MCU control module and the voltage preprocessing module because the enabling input pin of the MCU system power supply module still receives a high level enabling signal output by the MCU control module;
the voltage preprocessing module receives a switch control signal, compares the switch control signal with a voltage threshold value, and outputs a low level to the MCU control module if the switch control signal is less than or equal to the voltage threshold value;
the MCU control module receives the low level output by the voltage preprocessing module, and then outputs a low level enabling signal to an enabling input pin of the MCU system power supply module;
an enabling input pin of the MCU system power supply module is connected with and receives a low-level enabling signal of the MCU control module, a power supply output pin of the MCU system power supply module prohibits power supply from being output to the MCU control module and the voltage preprocessing module, and the MCU control module enters a dormant state from a wake-up state;
if the CAN network is awakened through the upper computer;
the CAN network upper computer outputs power supply enabling control data to the CAN module, and the power supply enabling control data is power supply output enabling;
the storage battery continuously outputs power to the CAN power module, and the CAN power module continuously outputs power to the CAN module;
the CAN module receives power supply enabling control data output by the CAN network upper computer, and the CAN module outputs a high-level enabling signal to the MCU system power supply module because the power supply enabling control data is power supply output enabling;
an enabling input pin of the MCU system power supply module receives a high-level enabling signal output by the CAN module, and a power supply output pin of the MCU system power supply module outputs power to the voltage preprocessing module and the MCU control module;
the MCU control module receives a power supply output by a power supply output pin of the MCU system power supply module and changes from a dormant state to an awakening state; the CAN module transmits power supply enabling control data to the MCU control module in a CAN communication mode, and the MCU control module outputs a high-level enabling signal to an enabling input pin of the MCU system power module because the power supply enabling control data are power supply output enabling;
the CAN network upper computer outputs power supply enabling control data to the CAN module again, and the power supply enabling control data is converted into power supply disabling;
the CAN module obtains power supply enabling control data output by the CAN network upper computer and transmits the power supply enabling control data to the CAN module, and the CAN module outputs a low-level enabling signal to the MCU system power module because the power supply enabling control data is power supply disabling;
an enabling input pin of the MCU system power supply module receives a low level enabling signal output by the CAN module, but the enabling input pin of the MCU system power supply module still receives a high level enabling signal output by the MCU control module, and a power supply output pin of the MCU system power supply module still outputs power to the voltage preprocessing module and the MCU control module;
the CAN module transmits power supply enabling control data to the MCU control module in a CAN communication mode, and the MCU control module outputs a low-level enabling signal to an enabling input pin of the MCU system power module because the power supply enabling control data is power supply disabling;
and an enabling input pin of the MCU system power supply module receives a low level enabling signal output by the MCU control module, a power supply output pin of the MCU system power supply module prohibits power supply output to the voltage preprocessing module and the MCU control module, and the MCU control module is switched from a wake-up state to a sleep state.
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