CN111791831A - PEPS system, communication method thereof, vehicle body controller and vehicle body control method - Google Patents
PEPS system, communication method thereof, vehicle body controller and vehicle body control method Download PDFInfo
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- CN111791831A CN111791831A CN201910282075.6A CN201910282075A CN111791831A CN 111791831 A CN111791831 A CN 111791831A CN 201910282075 A CN201910282075 A CN 201910282075A CN 111791831 A CN111791831 A CN 111791831A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
Abstract
Before the vehicle body controller wakes up the whole external CAN network, the vehicle body controller determines whether to wake up the external CAN network through pre-judged precondition information (namely state information (effective or ineffective) of an intelligent key close to a mark bit), so that the network where the whole BCM is located cannot be woken up under the working condition of abnormal false triggering (namely the intelligent key close to the mark bit is ineffective), and the standby power consumption of the whole vehicle system is reduced.
Description
Technical Field
The invention relates to the field of intelligent automobiles, in particular to a PEPS system, a communication method thereof, an automobile body controller and an automobile body control method.
Background
The PEPS (Passive Entry AND Passive Start) system is widely applied to the field of intelligent automobiles, AND the automobile provided with the PEPS system can finish the operations of opening the automobile door AND starting an engine of a vehicle without pressing a remote control key on the intelligent key or plugging AND unplugging the intelligent key from a lock cylinder by a user. The specific implementation process is as follows: when the intelligent key is in an effective range outside the automobile, a user can open the automobile door by pulling the door handle or pressing an unlocking button on the door handle; when a user enters the vehicle, the vehicle engine can be started only by pressing a key starting button on the vehicle body under the condition that the intelligent key is in the vehicle. The PEPS system brings convenient and comfortable brand-new driving experience to the user.
However, the PEPS system still has the problem of large system power consumption under the working condition of abnormal false triggering.
Disclosure of Invention
The invention aims to provide a PEPS system and a communication method thereof, so as to reduce the standby power consumption of the PEPS system.
Another objective of the present invention is to provide a vehicle body controller and a vehicle body control method, so as to reduce the standby power consumption of the entire vehicle system.
In order to solve the above technical problem, the present invention provides a communication method of a PEPS system, including:
the PEPS module detects whether an intelligent key exists in a preset effective distance range;
and when the intelligent key is detected to be in the preset effective distance range, sending a setting control signal to the vehicle body controller through the private LIN bus or the private CAN bus, wherein the setting control signal is used for controlling the vehicle body controller to set the intelligent key to be effective when approaching the zone bit.
Optionally, the preset effective distance range is less than or equal to 30 meters.
Optionally, the PEPS module comprises a PEPS master module and a PEPS slave module, and the PEPS master module and the PEPS slave module are connected through the private LIN bus or the private CAN bus.
Optionally, when it is detected that an intelligent key is in the preset effective distance range and the intelligent key is close to the vehicle body, a setting control signal is sent to the vehicle body controller through the private LIN bus or the private CAN bus.
Optionally, the step of determining whether there is a smart key in the preset valid distance range, and whether the smart key is approaching the vehicle body includes:
and when the PEPS master module judges that the intelligent key exists in the preset effective distance range, the PEPS slave module is started, and the PEPS slave module positions the position of the intelligent key to determine whether the intelligent key is close to the vehicle body.
Optionally, the PEPS module detects whether the smart key is present within the preset valid distance range by periodically transmitting a signal through bluetooth or radio frequency.
The invention also provides a vehicle body control method, which comprises the following steps:
when a setting control signal sent by the PEPS system is received, the intelligent key is set to be effective when being close to the flag bit;
and when the awakening control signal is received, judging whether the intelligent key is effective close to the zone bit, and if so, awakening the network of the external CAN bus to execute unlocking.
Optionally, after the proximity flag bit of the smart key is set to be valid, if the wake-up control signal is not received, the vehicle body controller enters a sleep mode.
Optionally, when a wake-up control signal is received, whether the proximity of the smart key to the flag bit is valid is judged, and if the proximity of the smart key to the flag bit is invalid, the vehicle body controller enters a sleep mode.
The invention also provides a PEPS system, comprising:
the PEPS module is used for detecting whether an intelligent key exists in a preset effective distance range;
and the setting signal sending module is used for sending a setting control signal to the automobile body controller through a private LIN bus or a private CAN bus when the intelligent key is detected to be in the preset effective distance range, and the setting control signal is used for controlling the automobile body controller to set the intelligent key to be effective when the intelligent key is close to the zone bit.
Optionally, the smart key is implemented by any one of a smart phone, a remote controller key, a smart watch, and a smart bracelet.
The present invention also provides a vehicle body controller, including:
the flag bit setting module is used for setting the intelligent key close to the flag bit to be effective when receiving a setting control signal sent by the PEPS system;
and the awakening module is used for judging whether the intelligent key is effective when receiving the awakening control signal, and awakening the network of the external CAN bus to unlock if the intelligent key is effective.
Optionally, the wake-up module wakes up by a doorknob trigger or a face recognition mode.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the invention provides a PEPS system and a communication method thereof.A PEPS module detects whether an intelligent key exists in a preset effective distance range; and when the intelligent key is detected to be in the preset effective distance range, sending a setting control signal to the vehicle body controller through the private LIN bus or the private CAN bus, wherein the setting control signal is used for controlling the vehicle body controller to set the intelligent key to be effective when the intelligent key is close to the flag bit, so that the standby power consumption of the PEPS system is reduced.
2. According to the vehicle body controller and the vehicle body control method, when the setting control signal sent by the PEPS module is received, the intelligent key is set to be effective when being close to the flag bit; and when the awakening control signal is received, judging whether the intelligent key is effective close to the zone bit, and if so, awakening the network of the external CAN bus to execute unlocking. The intelligent key monitoring system comprises a vehicle Body Controller (BCM), a plurality of nodes, a LIN or CAN network, a pre-judged precondition information (namely state information (effective or invalid) of the intelligent key close to the zone bit) is used for determining whether to awaken the external CAN network before the vehicle body controller awakens the whole external CAN network, so that the whole BCM CAN not be awakened under the working condition of abnormal false triggering (namely the intelligent key is close to the zone bit and invalid), and the standby power consumption of the whole vehicle system is reduced.
Drawings
Fig. 1 is a schematic flow chart of a communication method of a PEPS system according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of a vehicle body control method according to an embodiment of the invention.
Fig. 3 is a schematic flow chart of a concrete implementation of the vehicle body control method according to the embodiment of the invention.
Fig. 4 is a schematic diagram of the PEPS system (function module) and the vehicle body controller according to the embodiment of the invention.
Fig. 5 is a schematic diagram of the PEPS system (entity module) and the vehicle body controller according to the embodiment of the invention.
Detailed Description
For the sake of reference and clarity, the descriptions, abbreviations or abbreviations of the technical terms used hereinafter are summarized as follows:
PEPS: passive Entry AND Passive Start, keyless Entry AND Start;
CAN: controller Area Network, Controller Area Network;
BCM: body Control Module, Body controller;
LIN: local Interconnect Network, Local Interconnect Network.
The inventor finds that if the PEPS system only communicates with the vehicle body controller through the single-path CAN bus, and meanwhile, the network of the single-path CAN bus is also connected with a plurality of nodes, when the keyless entry function is realized through the mode, once a door handle switch is triggered (actually, a door handle is abnormally and falsely triggered sometimes), the vehicle body controller is awakened, and then all the nodes on the network of the single-path CAN bus where the whole vehicle body controller is located are awakened, so that the power consumption of the PEPS system CAN generate higher current consumption under the condition that the door handle is triggered, and the problem of higher standby power consumption exists.
In the PEPS system, the communication method thereof, the vehicle body controller and the vehicle body control method provided by the embodiment of the invention, the PEPS system is independently connected with the vehicle body controller through a private LIN or CAN bus, the BCM is a node in an LIN/CAN network, the PEPS module identifies whether an intelligent key approaches and informs the BCM through the private LIN bus or the private CAN bus, and the BCM sets the state of the intelligent key approaching the flag bit, so that when the door handle is triggered, the BCM determines whether to awaken the external CAN network or not through pre-judged precondition information (namely state information (effective or ineffective) of the intelligent key approaching the flag bit) before awakening the whole external CAN network. Therefore, the network where the whole BCM is located cannot be awakened under the working condition of abnormal false triggering, and the standby power consumption of the PEPS system and the whole vehicle system is reduced.
The PEPS system, the communication method thereof, the vehicle body controller, and the vehicle body control method according to the present invention will be described in detail with reference to the accompanying drawings and the specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a communication method of a PEPS system, including the following steps:
s11, the PEPS module detects whether an intelligent key exists in a preset effective distance range;
and S12, when the intelligent key is detected to be in the preset effective distance range, sending a setting control signal to the automobile body controller through the private LIN bus or the private CAN bus, wherein the setting control signal is used for controlling the automobile body controller to set the intelligent key to be effective when approaching the zone bit.
Illustratively, the PEPS module detects whether the smart key is in the preset effective distance range, for example, less than or equal to 30 meters, by periodically transmitting a signal through bluetooth or radio frequency.
Fig. 4 is a schematic diagram of the PEPS system (function module) and the vehicle body controller according to the embodiment of the invention. Fig. 5 is a schematic diagram of the PEPS system (entity module) and the vehicle body controller according to the embodiment of the invention. As shown in fig. 4, the PEPS system includes:
the PEPS module is used for detecting whether an intelligent key exists in a preset effective distance range;
and the setting signal sending module is used for sending a setting control signal to the automobile body controller through a private LIN bus or a private CAN bus when the intelligent key is detected to be in the preset effective distance range, and the setting control signal is used for controlling the automobile body controller to set the intelligent key to be effective when the intelligent key is close to the zone bit.
Specifically, as shown in fig. 4 and 5, the PEPS module detects whether the smart key is available, and the PEPS master module and the PEPS slave modules are jointly implemented by the PEPS master module and the PEPS slave modules, and the PEPS master module and the PEPS slave modules are connected through the private LIN bus or the private CAN bus. The function of the setting signal sending module is realized through the PEPS main module, and the PEPS main module sends a setting control signal to a vehicle Body Controller (BCM) through a private LIN bus or a private CAN bus. It should be understood that the function of the set signal transmitting module CAN also be implemented by the PEPS slave module, which CAN correspondingly also be used to transmit the set control signal to the Body Controller (BCM) via the private LIN bus or the private CAN bus.
And the PEPS system sends a setting control signal to the vehicle body controller through the private LIN bus or the private CAN bus. Specifically, when the PEPS master module finds that the smart key is located within a preset effective distance range, for example, within 30 meters, the PEPS slave module is started, and the PEPS slave module locates the position of the smart key; when the comprehensive judgment of the PEPS master module and the PEPS slave module confirms that the intelligent key is located and is close to the vehicle body, the setting signal sending module (a specific entity is the PEPS master module for example) sends a setting control signal to the vehicle body controller through the private LIN bus or the private CAN bus.
Referring to fig. 2, based on the same inventive concept, an embodiment of the present invention further provides a vehicle body control method, including:
s21, when a setting control signal sent by the PEPS system is received, setting the intelligent key to be effective close to the flag bit;
and S22, judging whether the intelligent key is effective when the awakening control signal is received, and awakening the network of the external CAN bus to unlock if the intelligent key is effective.
Specifically, a vehicle Body Controller (BCM) sets an initial state of the intelligent key close to a flag bit to be an invalid state; and when the vehicle Body Controller (BCM) receives a setting control signal sent by the PEPS system, the intelligent key is set to be effective close to the flag bit. When a vehicle Body Controller (BCM) receives a wake-up control signal, whether the intelligent key is effective close to the zone bit is judged, and if the intelligent key is effective, the network of the external CAN bus is awakened to execute unlocking. The specific wake-up mode can be triggered by a door handle or awakened in a face recognition mode, for example.
Referring to fig. 3 and fig. 4, the step S22 is executed specifically by the following steps:
s221, judging whether a wake-up control signal is received, if not, executing a step S224, enabling a vehicle Body Controller (BCM) to enter a sleep mode, if so, executing a step S222, and further judging whether the intelligent key is effective close to a zone bit or not by the vehicle body controller;
if so, step S223 is executed, the vehicle Body Controller (BCM) wakes up the network of the external CAN bus to perform unlocking, and if not, step S224 is executed, and the vehicle Body Controller (BCM) enters into sleep.
For example, after the vehicle network where the vehicle body is located is dormant, the vehicle Body Controller (BCM) also enters deep sleep, and the vehicle Body Controller (BCM) sets an initial state of the smart key approaching flag (keylock) to an invalid state, for example, sets keylock ═ 0. When a setting control signal sent by the PEPS system is received, the proximity flag bit of the smart key is set to be valid, for example, keylock is set to 1. Judging whether a wake-up control signal is received or not, and if the vehicle Body Controller (BCM) is awakened through modes such as door handle triggering or face recognition, further judging whether the intelligent key is effective when approaching the zone bit; if the intelligent key is effective close to the zone bit, the BCM wakes up the network of the external CAN bus to execute unlocking; if the intelligent key is invalid close to the zone bit, the BCM does not wake up the network of the external CAN bus, but enters the dormancy.
An embodiment of the present invention provides a PEPS system, as shown in fig. 4, including:
the PEPS module is used for detecting whether an intelligent key exists in a preset effective distance range;
and the setting signal sending module is used for sending a setting control signal to the automobile body controller through a private LIN bus or a private CAN bus when the intelligent key is detected to be in the preset effective distance range, and the setting control signal is used for controlling the automobile body controller to set the intelligent key to be effective when the intelligent key is close to the zone bit.
Specifically, as shown in fig. 4 and 5, the PEPS module detects whether the smart key is available, and the PEPS master module and the PEPS slave modules are jointly implemented by the PEPS master module and the PEPS slave modules, and the PEPS master module and the PEPS slave modules are connected through the private LIN bus or the private CAN bus. The function of the setting signal sending module is realized through the PEPS master module, and specifically, the PEPS master module sends the setting control signal to a vehicle Body Controller (BCM) through a private LIN bus or a private CAN bus. It should be understood that the function of the set signal transmitting module CAN also be implemented by the PEPS slave module, which CAN correspondingly also be used to transmit the set control signal to the Body Controller (BCM) via the private LIN bus or the private CAN bus.
And the PEPS system sends a setting control signal to the vehicle body controller through the private LIN bus or the private CAN bus. Specifically, when the PEPS master module finds that the smart key is located within a preset effective distance range, for example, within 30 meters, the PEPS slave module is started, and the PEPS slave module locates the position of the smart key; when the comprehensive judgment of the PEPS master module and the PEPS slave module confirms that the intelligent key is located and is close to the vehicle body, the setting signal sending module (a specific entity is the PEPS master module for example) sends a setting control signal to the vehicle body controller through the private LIN bus or the private CAN bus.
The intelligent key is realized by any one of an intelligent mobile phone, a remote controller key, an intelligent watch and an intelligent bracelet. The smart key is provided with a vehicle smart key application. And after the intelligent key enters the effective range of the signals such as the Bluetooth signal or the radio frequency signal, the automobile intelligent key application program is awakened and authenticated. The PEPS module is communicated with the intelligent key through Bluetooth or radio frequency. The PEPS module is mainly used for communication and position positioning. The PEPS module comprises a high-frequency receiving circuit, the high-frequency receiving circuit is used for receiving the RF high-frequency signal of the intelligent key so as to verify the legal identity of the intelligent key, and a Bluetooth module or a radio frequency module is integrated in the PEPS module so as to receive the related information of the intelligent key. The intelligent key has the functions of receiving low-frequency signals and sending high-frequency signals, and transmits information to the PEPS module in a Bluetooth or radio frequency mode and the like.
An embodiment of the present invention provides a vehicle body controller, as shown in fig. 4, including:
the flag bit setting module is used for setting the intelligent key close to the flag bit to be effective when receiving a setting control signal sent by the PEPS system;
and the awakening module is used for judging whether the intelligent key is effective when receiving the awakening control signal, and awakening the network of the external CAN bus to unlock if the intelligent key is effective.
Specifically, the awakening module is triggered by a door handle or awakened in a face recognition mode.
The body controller may also perform vehicle unlatching, trunk opening, etc. The vehicle body controller is connected with a plurality of nodes through an external CAN bus; the plurality of nodes include, for example: a door touch switch, an ignition switch, an engine electric control unit, a gear box controller, an electronic steering column lock and the like. The door handle and the body controller may be electrically connected by a hard wire. When a user pulls the door handle or presses an unlock button on the door handle, the switch sensor of the door handle is triggered and the body controller receives the door handle switch sensor signal. And when the door touch switch receives an unlocking instruction transmitted by the external CAN bus, unlocking is executed.
The PEPS system, the communication method thereof, the vehicle body controller and the vehicle body control method can be applied to vehicles. It should be understood that the disclosed systems and methods can be used with any number of different systems and are not particularly limited to the vehicle or its environment shown herein. Further, the structure, construction, arrangement and operation of vehicles and their individual components are generally known in the art. Such as a passenger car, motorcycle, truck, Sport Utility Vehicle (SUV), Recreational Vehicle (RV), marine vessel, aircraft, or any other vehicle.
Referring to fig. 4 and 5, the PEPS system is individually connected to the body controller through a private LIN bus or a private CAN bus, the BCM is a node in the LIN/CAN network, and after the PEPS main module identifies the smart key, the smart key validity information is reported to the BCM through the private LIN/CAN network, so that the BCM CAN have pre-determined precondition information to determine whether to wake up the external CAN network before waking up the entire external CAN network. After receiving LIN/CAN interruption, the BCM enters shallow layer to wake up, and does not drive an external CAN network to wake up at the moment; after the shallow layer awakening is carried out, the BCM sets a key approach flag (KEYClose) to be valid, the PEPS main module informs the BCM to eliminate the key approach flag (KEYClose) after the intelligent key leaves, namely the BCM sets the key approach flag (KEYClose) to be invalid, and the key approach flag (KEYClose) is not eliminated under other conditions. Under the condition that the sign of the legal intelligent key approaching is effective, the BCM CAN completely wake up the BCM and wake up the network of the external CAN bus to execute unlocking when being triggered.
When no intelligent key exists around the vehicle, the PEPS main module does not inform the BCM of the key validity information through the private LIN/CAN, so that the BCM does not set the intelligent key valid flag bit, and therefore, the triggering signals from a door handle or face recognition and the like are not responded, and the CAN network where the BCM is located is not awakened. The overall power consumption of the vehicle system can be reduced while running.
In summary, in the PEPS system and the communication method thereof provided by the present invention, the PEPS system and the vehicle body controller are individually connected through a private LIN bus or a private CAN bus, and the vehicle body controller is connected to a plurality of nodes through an external CAN bus; the BCM is a node in the LIN or CAN network, the PEPS system identifies whether an intelligent key approaches and informs the BCM through a channel of the private LIN bus or the private CAN bus, and the BCM sets the state of the intelligent key approaching the flag bit, so that when the door handle is triggered, the BCM determines whether to awaken the external CAN network or not through pre-judged precondition information (namely state information (effective or ineffective) of the intelligent key approaching the flag bit) before awakening the whole external CAN network. Under the working condition of abnormal false triggering (namely the intelligent key is invalid when being close to the flag bit), the whole network where the BCM is located cannot be awakened, and therefore the standby power consumption of the whole system of the vehicle is reduced.
For convenience of description, the above system is described as being divided into various units by functions, and described separately. Of course, the functions of the units may be implemented in the same software and/or hardware or in a plurality of software and/or hardware when implementing the invention.
From the above description of the embodiments, it is clear to those skilled in the art that the present invention can be implemented by software plus necessary general hardware platform. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which may be stored in a storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method according to the embodiments or some parts of the embodiments.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
Claims (13)
1. A communication method of a PEPS system is characterized by comprising the following steps:
the PEPS module detects whether an intelligent key exists in a preset effective distance range;
and when the intelligent key is detected to be in the preset effective distance range, sending a setting control signal to the vehicle body controller through the private LIN bus or the private CAN bus, wherein the setting control signal is used for controlling the vehicle body controller to set the intelligent key to be effective when approaching the zone bit.
2. The communication method of the PEPS system according to claim 1, wherein the preset effective distance range is 30 meters or less.
3. The communication method of the PEPS system according to claim 1, wherein the PEPS module includes a PEPS master module and a PEPS slave module, and the PEPS master module and the PEPS slave module are connected through the private LIN bus or the private CAN bus.
4. The communication method of the PEPS system according to claim 3, wherein when it is detected that the smart key is within the preset valid distance range and the smart key is approaching the vehicle body, a set control signal is transmitted to the vehicle body controller through the private LIN bus or the private CAN bus.
5. The communication method of the PEPS system according to claim 4, wherein the step of determining whether the smart key is present within the preset valid distance range and the smart key is approaching the vehicle body comprises:
and when the PEPS master module judges that the intelligent key exists in the preset effective distance range, the PEPS slave module is started, and the PEPS slave module positions the position of the intelligent key to determine whether the intelligent key is close to the vehicle body.
6. The communication method of the PEPS system according to claim 1, wherein the PEPS module detects whether the smart key is within the preset valid distance range by timing a signal through bluetooth or radio frequency.
7. A vehicle body control method characterized by comprising:
when a setting control signal sent by the PEPS system is received, the intelligent key is set to be effective when being close to the flag bit;
and when the awakening control signal is received, judging whether the intelligent key is effective close to the zone bit, and if so, awakening the network of the external CAN bus to execute unlocking.
8. The vehicle body control method according to claim 7, wherein after the smart key is set to be valid close to the flag, if the wake-up control signal is not received, the vehicle body controller enters a sleep mode.
9. The vehicle body control method according to claim 7, wherein when a wake-up control signal is received, whether the smart key is valid close to the flag bit is judged, and if not, the vehicle body controller enters a sleep mode.
10. A PEPS system, comprising:
the PEPS module is used for detecting whether an intelligent key exists in a preset effective distance range;
and the setting signal sending module is used for sending a setting control signal to the automobile body controller through a private LIN bus or a private CAN bus when the intelligent key is detected to be in the preset effective distance range, and the setting control signal is used for controlling the automobile body controller to set the intelligent key to be effective when the intelligent key is close to the zone bit.
11. The PEPS system of claim 10, wherein the smart key is implemented by any one of a smart phone, a remote control key, a smart watch, and a smart bracelet.
12. A vehicle body controller, comprising:
the flag bit setting module is used for setting the intelligent key close to the flag bit to be effective when receiving a setting control signal sent by the PEPS system;
and the awakening module is used for judging whether the intelligent key is effective when receiving the awakening control signal, and awakening the network of the external CAN bus to unlock if the intelligent key is effective.
13. The vehicle body controller of claim 12, wherein the wake-up module wakes up via a door handle trigger or a face recognition mode.
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| CN115206004A (en) * | 2021-04-13 | 2022-10-18 | 上海博泰悦臻网络技术服务有限公司 | Vehicle-mounted device connection control method, storage medium, and vehicle-mounted device |
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Application publication date: 20201020 |