CN113250884B - Control method and control system for KL15 signal of commercial vehicle - Google Patents
Control method and control system for KL15 signal of commercial vehicle Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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Abstract
The invention discloses a control method and a control system for KL15 signals of a commercial vehicle, relating to the technical field of electronic control of vehicles, wherein the control method comprises the following steps: the controller judges whether the KL15 signal output by the ignition lock is normal: if the KL15 signal output by the ignition lock is normal, the controller outputs the KL15 signal to the electric element; if the ignition lock outputs a KL15 signal fault, the controller judges whether the vehicle is in a driving state: if the vehicle is in a driving state, the controller continues to output the KL15 signal to the electric element, and if the vehicle is in a non-driving state, the controller delays for a preset first time period and then stops outputting the KL15 signal. According to the control method, when the ignition lock has no mechanical fault, the ignition lock outputs a KL15 signal normally, and the controller outputs the KL15 signal to the electric element normally; when the ignition lock is in mechanical failure, the ignition lock outputs KL15 signals, the controller continues to output KL15 signals to the electric element, and the electric element can still receive KL15 signals when the ignition lock is in mechanical failure, so that the condition that a vehicle is flamed out during driving is avoided.
Description
Technical Field
The invention relates to the technical field of automobile electronic control, in particular to a control method and a control system for KL15 signals of a commercial vehicle.
Background
Currently, the KL15 signal generally represents the ignition signal of the engine and the signal to start the vehicle.
In the prior art, as shown in fig. 1, an ignition lock is screwed to an ON gear, a KL15 relay is closed, a contact is connected with a positive electrode of a power supply of a storage battery, and a KL15 signal is provided for an electricity utilization unit of a whole vehicle.
However, if the ignition lock has a mechanical fault, the ignition lock outputs a KL15 signal fault, and the KL15 relay cannot work normally, so that the KL15 signal provided to the power utilization unit of the whole vehicle is invalid, the problem that the vehicle is flamed out during driving is caused, and the safety of the whole vehicle is seriously influenced.
Disclosure of Invention
The embodiment of the invention provides a control method and a control system for a KL15 signal of a commercial vehicle, and aims to solve the technical problem that if an ignition lock is in mechanical failure, the vehicle is flameout in the conventional KL15 signal control method.
In a first aspect, a method for controlling a signal KL15 of a commercial vehicle is provided, the method comprising:
the controller judges whether the KL15 signal output by the ignition lock is normal:
if the KL15 signal output by the ignition lock is normal, the controller outputs the KL15 signal to the electric element;
if the ignition lock outputs a KL15 signal fault, the controller judges whether the vehicle is in a driving state: if the vehicle is in a driving state, the controller continues to output the KL15 signal to the electric element, and if the vehicle is in a non-driving state, the controller delays for a preset first time period and then stops outputting the KL15 signal.
When the ignition lock has no mechanical fault, the ignition lock outputs a KL15 signal normally, and the controller outputs the KL15 signal to the electric element normally; when the ignition lock is in mechanical failure, the ignition lock outputs KL15 signal failure, the controller continues to output KL15 signals to the electric element, and the electric element can still receive the KL15 signals when the ignition lock is in mechanical failure, so that the condition that the vehicle is flamed out during running can not occur, and the running safety of the vehicle is ensured.
In some embodiments, the determining whether the signal output by the ignition lock KL15 is normal by the controller includes:
the vehicle body control unit BCM and the central gateway CGW both collect KL15 signals output by the ignition lock so as to judge whether the KL15 signals output by the ignition lock are normal or not.
By using two controllers: and the vehicle body control unit BCM and the central gateway CGW can acquire KL15 signals output by the ignition lock and judge whether the KL15 signals output by the ignition lock are normal or not. When any controller of the BCM and the CGW has a fault, the other controller can continue to work, the two controllers are adopted to realize the redundant control of KL15 signal output, and the safety and the reliability are improved.
In some embodiments, the acquiring, by the vehicle body control unit BCM and the central gateway CGW, KL15 signals output by the ignition lock to determine whether the KL15 signals output by the ignition lock are normal includes:
the BCM and the CGW both perform software filtering processing on the KL15 signal output by the acquired ignition lock, and judge whether the KL15 signal input is effective;
if and only if the judgment results of the vehicle body control unit BCM and the central gateway CGW are invalid, judging that KL15 signals output by the ignition lock have faults; otherwise, judging that the KL15 signal output by the ignition lock is normal.
Through the interactive judgment between the BCM and the CGW, the reliability of the KL15 signal output by the ignition lock is ensured, and the judgment result is more real and reliable.
In some embodiments, the software filtering processing of the acquired KL15 signal output by the ignition lock is performed by both the vehicle body control unit BCM and the central gateway CGW, and determining whether the KL15 signal input is valid includes:
the vehicle body control unit BCM and the central gateway CGW acquire KL15 signals output by an ignition lock in real time;
if the KL15 signal disappears and the continuous disappearing time length is larger than or equal to the preset second time length, judging that the KL15 signal input is invalid, and otherwise, judging that the KL15 signal input is valid.
In order to ensure the reliability of the KL15 signal output by the ignition lock, the BCM and the CGW both perform software filtering processing on the collected KL15 signal output by the ignition lock, and the KL15 signal input is judged to be invalid only if the KL15 signal disappears and the continuous disappearance duration is greater than or equal to a preset second duration.
In some embodiments, after the controller keeps outputting the KL15 signal to the electric element, the method includes:
and executing the parking operation until the vehicle is in a non-driving state, and stopping outputting the KL15 signal after delaying the preset first time length by the controller.
Before the vehicle reaches the non-driving state, the controller keeps the KL15 signal to be continuously output to the electric element, and the safety of the vehicle is ensured.
In some embodiments, the determining whether the vehicle is in a driving state includes:
if the rotating speed of the engine is not less than the preset rotating speed or the vehicle speed is not less than the preset vehicle speed, the controller judges that the vehicle is in a driving state; otherwise, the controller judges that the vehicle is in a non-driving state.
In some embodiments, the predetermined speed is 400r/m and the predetermined vehicle speed is 5km/h.
In some embodiments, the determining if the signal of the ignition lock output KL15 fails includes:
the controller generates an ignition lock abnormal signal and sends the ignition lock abnormal signal to the instrument for displaying, and a user is prompted to maintain in time.
In a second aspect, a control system for signals of a KL15 of a commercial vehicle is provided, which includes:
the ignition lock is connected with the KL15 power supply line;
a controller connected with the ignition lock and a KL15 power supply line and configured to:
the controller is used for judging whether the KL15 signal output by the ignition lock is normal:
if the signal of the KL15 output by the ignition lock is normal, the controller is used for outputting the KL15 signal to the electric element;
if the ignition lock outputs a KL15 signal fault, the controller is used for judging whether the vehicle is in a driving state: if yes, the controller is used for continuously outputting the KL15 signal to the electric element, and if not, the controller is used for delaying the preset first time length and then stopping outputting the KL15 signal.
When the ignition lock has no mechanical fault, the ignition lock outputs a KL15 signal normally, and the controller outputs the KL15 signal to the electric element normally; when the ignition lock is in mechanical failure, the ignition lock outputs KL15 signal failure, the controller continues to output KL15 signals to the electric element, and the electric element can still receive the KL15 signals when the ignition lock is in mechanical failure, so that the condition that the vehicle is flamed out during running can not occur, and the running safety of the vehicle is ensured.
In some embodiments, the controller comprises a body control unit BCM and a central gateway CGW, both connected to the ignition lock and KL15 power supply line.
By using two controllers: the vehicle body control unit BCM and the central gateway CGW can both collect KL15 signals output by the ignition lock and judge whether the KL15 signals output by the ignition lock are normal. When any controller of the BCM and the CGW fails, the other controller can continue to work, the two controllers are adopted to realize the redundant control of KL15 signal output, and the safety and the reliability are improved.
The technical scheme provided by the invention has the beneficial effects that:
the embodiment of the invention provides a control method and a control system for KL15 signals of a commercial vehicle, when an ignition lock has no mechanical fault, the ignition lock outputs KL15 signals normally, and a controller outputs KL15 signals to an electric element normally; when the ignition lock is in mechanical failure, the ignition lock outputs KL15 signal failure, the controller continues to output KL15 signals to the electric element, and the electric element can still receive the KL15 signals when the ignition lock is in mechanical failure, so that the condition that the vehicle is flamed out during running can not occur, and the running safety of the vehicle is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a control system of a KL15 signal of a conventional commercial vehicle;
fig. 2 is a flowchart of a method for controlling a signal KL15 of a commercial vehicle according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control system of a KL15 signal of a commercial vehicle according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a control system of a signal KL15 of a commercial vehicle according to an embodiment of the present invention;
in the figure: 1. an ignition lock; 2. a relay; 3. and a controller.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the prior art, as shown in fig. 1, when an ignition lock is turned to an ON position, a KL15 relay is closed, and a contact is connected with the positive electrode of a power supply of a storage battery, so that KL15 signals are provided for control units such as an engine system and a brake system of a whole vehicle.
However, if the ignition lock has a mechanical fault, the ignition lock outputs a KL15 signal fault, and a KL15 relay cannot work normally, so that KL15 signals provided to control units such as an engine system and a brake system of the whole vehicle are invalid, the problem of flameout of the vehicle during driving is caused, and the safety of the whole vehicle is seriously affected.
The embodiment of the invention provides a control method for KL15 signals of a commercial vehicle, which can solve the technical problem that if an ignition lock is in mechanical failure, a vehicle is flamed out in the conventional KL15 signal control method.
Referring to fig. 2 and 3, an embodiment of the present invention provides a method for controlling signals of a KL15 of a commercial vehicle, where the method includes:
step S101, judging whether the signal of the ignition lock output KL15 is normal or not by the controller: if the signal of the ignition lock output KL15 is normal, executing step S102; if the ignition lock outputs KL15 signal failure, executing step S103;
in step S102, the controller outputs a KL15 signal to the electric elements.
Step S103, judging whether the vehicle is in a driving state by the controller: if the vehicle is in a driving state, executing step S104; if the vehicle is in the non-driving state, step S106 is executed.
In step S104, the controller continues to output the KL15 signal to the electric element.
And step S106, the controller delays for a preset first time length and then stops outputting the KL15 signal.
Wherein, the power consumption unit includes at least:
engine Control Unit EECU (Engine Electronic Control Unit): the engine control unit EECU is the core of an automobile engine control system, and can provide the mixture with the optimal air-fuel ratio and the optimal ignition time for the engine according to different working conditions of the engine, so that the engine is always in the optimal working state, and the performance (dynamic property, economy and emission performance) of the engine is optimal. It is similar to common computer and consists of Microprocessor (MCU), memory (ROM, RAM), I/O interface, A/D converter, shaping and driving IC.
Data Communication Module DCM (Data Communication Module): the DCM is a network communication function module used in a car, which can be connected by pressing a button lightly, so that a user can enjoy high-speed communication without considering login time and transmission amount, and the DCM has an automatic connection function when interrupted.
Shift control unit TCU (Transmission control unit): and the gear shifting control unit TCU is used for determining a gear shifting point when the automobile shifts gears, controlling the automobile gear shifting mechanism to perform gear returning and gear entering operations, calculating the motor rotating speed when the automobile shifts gears and calculating the automobile speed.
Vehicle remote control and remote read information BOX T-BOX (telematics BOX): the vehicle-mounted T-BOX Can deeply read vehicle Can bus data and a private protocol, the T-BOX terminal is provided with an OBD module with dual-core processing and a CPU framework with dual-core processing, bus data and private protocol reverse control related to vehicle buses Dcan, kcan and PTcan are respectively collected, the data are transmitted to a cloud server through a GPRS network, and vehicle condition reports, driving reports, fuel consumption statistics, fault reminding, violation query, position tracks, driving behaviors, safety theft prevention, reservation service, remote vehicle finding, control of vehicle doors, windows, lamps, locks, loudspeakers, double flashes, reflector folding, skylights, monitoring central control warning, airbag states and the like are provided.
According to the control method of the KL15 signal of the commercial vehicle, when the ignition lock has no mechanical fault, the ignition lock outputs the KL15 signal normally, and the controller outputs the KL15 signal to the electric element normally; when the ignition lock is in mechanical failure, the ignition lock outputs KL15 signal failure, the controller continues to output KL15 signals to the power utilization element, and the power utilization element can still receive KL15 signals when the ignition lock is in mechanical failure, so that the condition that the vehicle is flamed out during driving is avoided, and the driving safety of the vehicle is ensured.
As an alternative implementation, referring to fig. 4, in the method for controlling the KL15 signal of the commercial vehicle according to the embodiment of the present invention, the determining whether the KL15 signal output by the ignition lock is normal by the controller includes: the Body Control unit BCM (Body Control Module) and the Central Gateway CGW (Central Gateway) both collect KL15 signals output by the ignition lock so as to judge whether the KL15 signals output by the ignition lock are normal or not.
Specifically, the method for controlling the signal of the KL15 of the commercial vehicle in the embodiment of the present invention uses two controllers: the vehicle body control unit BCM and the central gateway CGW can both collect KL15 signals output by the ignition lock and judge whether the KL15 signals output by the ignition lock are normal. When any controller of the BCM and the CGW has a fault, the other controller can continue to work, the two controllers are adopted to realize the redundant control of KL15 signal output, and the safety and the reliability are improved.
Among them, the vehicle Body controller BCM is also called a Body Computer (Body Computer), and is one of important components of the automobile. Common functions of the vehicle body controller include controlling power windows, power mirrors, air conditioners, headlights, turn signals, anti-theft locking systems, central locks, defroster, etc. The vehicle body controller can be connected with other vehicle-mounted ECUs through a bus.
The central gateway CGW is used as a core control device of an automobile network system, and the gateway is responsible for coordinating the work of protocol conversion, data exchange, fault diagnosis and the like between CAN bus networks with different structures and characteristics and other data networks. The CGW is a device for providing network compatible functions such as protocol conversion, data exchange, etc. when interworking is performed between networks that collect different architectures or protocols, and may also be a connector between other networks, a protocol converter, and a data translator. The central gateway CGW CAN be connected with different types of bus systems, such as CAN information, CAN diagnosis, CAN driving, instruments, comfort and the like, the areas are large, the engine CAN is generally high-speed, the diagnosis and comfort CAN is low-speed, some of the multimedia and the like adopt Ethernet, MOST and other bus systems, the central gateway CGW CAN ensure the normal operation of data exchange, and ensure that data buses with different speeds CAN cooperatively work through the gateway.
As an optional implementation manner, in the method for controlling a KL15 signal of a commercial vehicle in the embodiment of the present invention, the acquiring, by the vehicle body control unit BCM and the central gateway CGW, a KL15 signal output by an ignition lock to determine whether the KL15 signal output by the ignition lock is normal includes:
and the BCM and the CGW both perform software filtering processing on the KL15 signal output by the acquired ignition lock and judge whether the KL15 signal input is effective.
Judging that the KL15 signal output by the ignition lock has a fault if and only if the judgment results of the vehicle body control unit BCM and the central gateway CGW are invalid; otherwise, judging that the KL15 signal output by the ignition lock is normal.
Specifically, the vehicle body control unit BCM and the central gateway CGW upload a result of judging whether KL15 signal input is valid to the CAN bus, the vehicle body control unit BCM or the central gateway CGW combines a judgment result of the CAN bus with a self judgment result, and when any result judges that KL15 signal input is valid, it is judged that a KL15 signal output by the ignition lock is normal. Through the interactive judgment between the BCM and the CGW, the reliability of the KL15 signal output by the ignition lock can be ensured, and the judgment result is more real and reliable.
As an optional implementation manner, in the method for controlling a KL15 signal of a commercial vehicle in the embodiment of the present invention, the performing software filtering processing on the KL15 signal output by the acquired ignition lock by the vehicle body control unit BCM and the central gateway CGW, and determining whether the KL15 signal input is valid includes:
and the vehicle body control unit BCM and the central gateway CGW acquire KL15 signals output by the ignition lock in real time.
If the KL15 signal disappears and the continuous disappearing time length is greater than or equal to the preset first time length, judging that the KL15 signal input is invalid, and otherwise, judging that the KL15 signal input is valid.
Due to the difference of product quality, the vehicle ignition lock has a transient interruption with the maximum pulse width of 15ms in the vibration process, and the KL15 signal input is not judged to be invalid at the moment. Therefore, in order to ensure the reliability of the KL15 signal output by the ignition lock, the vehicle body control unit BCM and the central gateway CGW both perform software filtering processing on the collected KL15 signal output by the ignition lock, and determine that the KL15 signal input is invalid only if the KL15 signal disappears and the continuous disappearance duration is greater than or equal to a preset second duration, which may be set to 30ms.
As an optional implementation manner, in the method for controlling a KL15 signal of a commercial vehicle in an embodiment of the present invention, after the controller keeps outputting the KL15 signal to the electric element, the method includes:
and executing the parking operation until the vehicle is in a non-driving state, and stopping outputting the KL15 signal after delaying the preset first time length by the controller. Before the vehicle reaches the non-driving state, the controller keeps KL15 signals to be continuously output to the electric element, and the safety of the vehicle is guaranteed.
Specifically, referring to fig. 2 and 3, an embodiment of the present invention provides a method for controlling a signal of a KL15 of a commercial vehicle, where the method includes:
step S101, judging whether the signal of the ignition lock output KL15 is normal or not by the controller: if the signal of the ignition lock output KL15 is normal, executing step S102; if the ignition lock outputs KL15 signal failure, executing step S103;
in step S102, the controller outputs a KL15 signal to the electric elements.
Step S103, the controller judges whether the vehicle is in a driving state: if the vehicle is in a driving state, executing step S104; if the vehicle is in the non-driving state, step S106 is executed.
In step S104, the controller continues to output the KL15 signal to the electric element, and then executes step S105.
In step S105, the parking operation is executed, and the process returns to step S103.
And step S106, the controller delays for a preset first time length and then stops outputting the KL15 signal. Preferably, the preset first time period is 10s.
As an optional implementation manner, the method for controlling a signal of a commercial vehicle KL15 according to an embodiment of the present invention, where the determining whether the vehicle is in a driving state includes: if the rotating speed of the engine is not less than the preset rotating speed or the vehicle speed is not less than the preset vehicle speed, the controller judges that the vehicle is in a driving state; otherwise, the controller judges that the vehicle is in a non-driving state. Preferably, the preset rotating speed is 400r/m, and the preset vehicle speed is 5km/h. Specifically, the controller obtains engine speed and vehicle speed data according to a CAN bus engine speed EEC1 message signal and a vehicle speed TCO1 message signal.
As an alternative implementation manner, the method for controlling the signal of the commercial vehicle KL15 according to the embodiment of the present invention, when the signal of the ignition lock output KL15 fails, includes: the controller generates an ignition lock abnormal signal and sends the ignition lock abnormal signal to the instrument for displaying, and a user is prompted to maintain in time.
Referring to fig. 3, an embodiment of the present invention further provides a control system for a KL15 signal of a commercial vehicle, including: ignition lock and controller. The ignition lock is connected with a KL15 power supply line, and the controller is connected with the ignition lock and the KL15 power supply line and is configured to: the controller is used for judging whether the KL15 signal output by the ignition lock is normal: if the ignition lock outputs a KL15 signal normally, the controller is used for outputting the KL15 signal to an electric element; if the ignition lock outputs KL15 signal faults, the controller is used for judging whether the vehicle is in a driving state: if yes, the controller is used for continuously outputting the KL15 signal to the electric element, and if not, the controller is used for delaying the preset first time length and then stopping outputting the KL15 signal.
According to the control system for the KL15 signal of the commercial vehicle, when the ignition lock has no mechanical fault, the ignition lock outputs the KL15 signal normally, and the controller outputs the KL15 signal to the electric element normally; when the ignition lock is in mechanical failure, the ignition lock outputs KL15 signal failure, the controller continues to output KL15 signals to the electric element, and the electric element can still receive the KL15 signals when the ignition lock is in mechanical failure, so that the condition that the vehicle is flamed out during running can not occur, and the running safety of the vehicle is ensured.
As an alternative implementation, referring to fig. 4, in the control system for signals of a commercial vehicle KL15 according to the embodiment of the present invention, the controller includes a vehicle body control unit BCM and a central gateway CGW, and both the vehicle body control unit BCM and the central gateway CGW are connected to the ignition lock and the KL15 power supply line. The controller judges whether the KL15 signal output by the ignition lock is normal or not, and comprises the following steps: the BCM and the CGW both collect KL15 signals output by the ignition lock so as to judge whether the KL15 signals output by the ignition lock are normal.
Specifically, the control system for the signal of the KL15 of the commercial vehicle in the embodiment of the present invention uses two controllers: the vehicle body control unit BCM and the central gateway CGW can both acquire KL15 signals output by the ignition lock and judge whether the KL15 signals output by the ignition lock are normal. When any controller of the BCM and the CGW fails, the other controller can continue to work, the two controllers are adopted to realize the redundant control of KL15 signal output, and the safety and the reliability are improved.
Among them, the body controller BCM is also called a body computer (body computer), and is one of important components of an automobile. Common functions of the vehicle body controller include controlling power windows, power mirrors, air conditioners, headlights, turn signals, anti-theft locking systems, central locks, and defrost devices. The vehicle body controller can be connected with other vehicle-mounted ECUs through a bus.
The central gateway CGW is used as a core control device of an automobile network system, and the gateway is responsible for coordinating the work of protocol conversion, data exchange, fault diagnosis and the like between CAN bus networks with different structures and characteristics and other data networks. The CGW is a device for providing network compatible functions such as protocol conversion, data exchange, etc. when interworking is performed between networks that collect different architectures or protocols, and may also be a connector between other networks, a protocol converter, and a data translator. The central gateway CGW CAN be connected with different types of bus systems, such as CAN information, CAN diagnosis, CAN driving, instruments, comfort and the like, the areas are large, the engine CAN is generally high-speed, the diagnosis and comfort CAN is low-speed, some of the multimedia and the like adopt Ethernet, MOST and other bus systems, the central gateway CGW CAN ensure the normal operation of data exchange, and ensure that data buses with different speeds CAN cooperatively work through the gateway.
As an optional implementation manner, in the control system of a commercial vehicle KL15 signal in the embodiment of the present invention, the acquiring, by the vehicle body control unit BCM and the central gateway CGW, a KL15 signal output by an ignition lock to determine whether the KL15 signal output by the ignition lock is normal includes:
and the BCM and the CGW both perform software filtering processing on the KL15 signal output by the acquired ignition lock and judge whether the KL15 signal input is effective.
Judging that the KL15 signal output by the ignition lock has a fault if and only if the judgment results of the vehicle body control unit BCM and the central gateway CGW are invalid; otherwise, judging that the KL15 signal output by the ignition lock is normal.
Specifically, the vehicle body control unit BCM and the central gateway CGW upload a result of judging whether KL15 signal input is valid to the CAN bus, the vehicle body control unit BCM or the central gateway CGW combines a judgment result of the CAN bus with a self judgment result, and when any result judges that KL15 signal input is valid, it is judged that a KL15 signal output by the ignition lock is normal. Through the interactive judgment between the BCM and the CGW, the reliability of the KL15 signal output by the ignition lock can be ensured, and the judgment result is more real and reliable.
As an optional implementation manner, in the control system of a KL15 signal of a commercial vehicle in the embodiment of the present invention, the performing software filtering processing on the KL15 signal output by the acquired ignition lock by the vehicle body control unit BCM and the central gateway CGW, and determining whether the KL15 signal input is valid includes:
and the vehicle body control unit BCM and the central gateway CGW acquire KL15 signals output by the ignition lock in real time.
If the KL15 signal disappears and the continuous disappearing time length is greater than or equal to the preset first time length, judging that the KL15 signal input is invalid, and otherwise, judging that the KL15 signal input is valid.
Due to the mass difference of the components, the ignition lock of the vehicle has instantaneous interruption of the maximum pulse width of 15ms in the vibration process, and the KL15 signal input is not judged to be invalid at the moment. Therefore, in order to ensure the reliability of the KL15 signal output by the ignition lock, the vehicle body control unit BCM and the central gateway CGW both perform software filtering on the acquired KL15 signal output by the ignition lock, and determine that the KL15 signal input is invalid only if the KL15 signal disappears and the continuous disappearance duration is greater than or equal to a preset second duration, which may be set to 30ms.
As an optional implementation manner, in the control system of a signal of a commercial vehicle KL15 in an embodiment of the present invention, after the controller keeps outputting the KL15 signal to the electric element, the control system includes:
and executing the parking operation until the vehicle is in a non-driving state, and stopping outputting the KL15 signal after delaying the preset first time length by the controller. Before the vehicle reaches the non-driving state, the controller keeps the KL15 signal to be continuously output to the electric element, and the safety of the vehicle is ensured.
As an optional implementation manner, the system for controlling signals of a KL15 of a commercial vehicle in the embodiment of the present invention, which determines whether the vehicle is in a driving state, includes: if the rotating speed of the engine is not less than the preset rotating speed or the vehicle speed is not less than the preset vehicle speed, the controller judges that the vehicle is in a driving state; otherwise, the controller judges that the vehicle is in a non-driving state. Preferably, the preset rotating speed is 400r/m, and the preset vehicle speed is 5km/h. Specifically, the controller obtains engine speed and vehicle speed data according to a CAN bus engine speed EEC1 message signal and a vehicle speed TCO1 message signal.
As an alternative implementation manner, the control system for the signal of the commercial vehicle KL15 in the embodiment of the present invention, when the signal of the ignition lock output KL15 fails, includes: the controller generates an ignition lock abnormal signal and sends the ignition lock abnormal signal to the instrument for displaying, and a user is prompted to maintain timely.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in this application, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The previous description is only an example of the present application, and is provided to enable any person skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A control method for signals of a KL15 of a commercial vehicle is characterized by comprising the following steps:
the controller judges whether the KL15 signal output by the ignition lock is normal:
if the KL15 signal output by the ignition lock is normal, the controller outputs the KL15 signal to the electric element;
if the ignition lock outputs a KL15 signal fault, the controller judges whether the vehicle is in a driving state: if the vehicle is in a driving state, the controller continues to output KL15 signals to the electric element, and if the vehicle is in a non-driving state, the controller delays for a preset first time period and then stops outputting the KL15 signals;
specifically, the controller judges whether the signal of the ignition lock output KL15 is normal, including:
the controller comprises a vehicle body control unit BCM and a central gateway CGW, wherein the vehicle body control unit BCM and the central gateway CGW both perform software filtering processing on a KL15 signal output by the acquired ignition lock and judge whether the KL15 signal input is effective or not;
judging that the KL15 signal output by the ignition lock has a fault if and only if the judgment results of the vehicle body control unit BCM and the central gateway CGW are invalid; otherwise, judging that the KL15 signal output by the ignition lock is normal.
2. The method for controlling KL15 signals of a commercial vehicle according to claim 1, wherein the step of performing software filtering processing on the KL15 signals output by the acquired ignition lock by the vehicle body control unit BCM and the central gateway CGW to determine whether the KL15 signal input is valid includes:
the vehicle body control unit BCM and the central gateway CGW acquire KL15 signals output by an ignition lock in real time;
if the KL15 signal disappears and the continuous disappearing time length is larger than or equal to the preset second time length, judging that the KL15 signal input is invalid, and otherwise, judging that the KL15 signal input is valid.
3. The method for controlling KL15 signals of a commercial vehicle according to claim 1, wherein the step of the controller keeping the KL15 signals continuously output to the electric elements comprises:
and executing the parking operation until the vehicle is in a non-driving state, and stopping outputting the KL15 signal after delaying the preset first time length by the controller.
4. The method for controlling KL15 signals of a commercial vehicle according to claim 1, wherein said determining whether the vehicle is in a driving state comprises:
if the rotating speed of the engine is not less than the preset rotating speed or the vehicle speed is not less than the preset vehicle speed, the controller judges that the vehicle is in a driving state; otherwise, the controller judges that the vehicle is in a non-driving state.
5. Method for controlling the KL15 signal of a commercial vehicle according to claim 4, characterized in that:
the preset rotating speed is 400r/m, and the preset vehicle speed is 5km/h.
6. The method for controlling the KL15 signals of the commercial vehicle according to claim 1, wherein if the signal of the ignition lock output KL15 fails, the method comprises the following steps:
the controller generates an ignition lock abnormal signal and sends the ignition lock abnormal signal to the instrument for displaying.
7. A control system of KL15 signals of a commercial vehicle is characterized by comprising:
an ignition lock connected to the KL15 power supply line;
a controller connected with the ignition lock and KL15 power supply line and configured to:
the controller is used for judging whether the KL15 signal output by the ignition lock is normal:
if the signal of the KL15 output by the ignition lock is normal, the controller is used for outputting the KL15 signal to the electric element;
if the ignition lock outputs a KL15 signal fault, the controller is used for judging whether the vehicle is in a driving state: if yes, the controller is used for continuously outputting the KL15 signal to the electric element, and if not, the controller is used for delaying the preset first time length and then stopping outputting the KL15 signal;
specifically, the controller is configured to determine whether the signal output by the ignition lock KL15 is normal, and includes:
the controller comprises a vehicle body control unit BCM and a central gateway CGW, and the vehicle body control unit BCM and the central gateway CGW are both connected with the ignition lock and the KL15 power supply line;
the vehicle body control unit BCM and the central gateway CGW are used for carrying out software filtering processing on the collected KL15 signals output by the ignition lock and judging whether the KL15 signals are input effectively;
judging that the KL15 signal output by the ignition lock has a fault if and only if the judgment results of the vehicle body control unit BCM and the central gateway CGW are invalid; otherwise, judging that the KL15 signal output by the ignition lock is normal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0762469B2 (en) * | 1985-05-31 | 1995-07-05 | 日本電装株式会社 | Ignition control device for internal combustion engine |
| JPH07117036B2 (en) * | 1989-04-14 | 1995-12-18 | 株式会社日立製作所 | Ignition control device |
| JP4412243B2 (en) * | 2005-06-24 | 2010-02-10 | 株式会社デンソー | In-vehicle emergency call device |
| CN202190288U (en) * | 2011-08-23 | 2012-04-11 | 中国北方车辆研究所 | Double-gateway redundancy structure for vehicle |
| KR101837332B1 (en) * | 2014-02-24 | 2018-03-09 | 히다치 오토모티브 시스템즈 가부시키가이샤 | In-vehicle device controller and power steering device |
| JP2017044162A (en) * | 2015-08-27 | 2017-03-02 | 富士通テン株式会社 | High-frequency wave generator used for plasma ignition device and high-frequency wave generation method |
| JP7077811B2 (en) * | 2018-06-19 | 2022-05-31 | 株式会社デンソー | Internal combustion engine ignition control system |
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