CN111994016A - Matching method and device for vehicle fuel pump, vehicle-mounted equipment and storage medium - Google Patents
Matching method and device for vehicle fuel pump, vehicle-mounted equipment and storage medium Download PDFInfo
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- CN111994016A CN111994016A CN202010841434.XA CN202010841434A CN111994016A CN 111994016 A CN111994016 A CN 111994016A CN 202010841434 A CN202010841434 A CN 202010841434A CN 111994016 A CN111994016 A CN 111994016A
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Abstract
The application relates to the technical field of vehicle-mounted equipment, in particular to a matching method and device of a vehicle fuel pump, the vehicle-mounted equipment and a storage medium, wherein the matching method comprises the following steps: storing matching commands of fuel pump self-learning processes comprising a plurality of different vehicle types in vehicle-mounted equipment in advance; when fuel pump self-learning matching is executed, the vehicle-mounted equipment is connected into a vehicle, a self-learning matching process is started, and the self-learning matching process specifically comprises the following steps: the vehicle-mounted equipment sends a vehicle type identification command to the vehicle so as to read the vehicle type corresponding to the vehicle; and the vehicle-mounted equipment sends a matching command to the electronic control unit according to the read vehicle type. The beneficial effect of this application lies in: the matching device is suitable for fuel pumps of various different automobiles, the self-learning matching cost of the fuel pumps is reduced, and in addition, the matching device is convenient to carry.
Description
Technical Field
The application relates to the technical field of vehicle-mounted equipment, in particular to a matching method and device of a vehicle fuel pump, the vehicle-mounted equipment and a storage medium.
Background
The fuel pump is the most basic component in the fuel supply system of the engine, and in the working process of the engine, the fuel pump extracts fuel from a fuel tank, continuously conveys the fuel to the engine through a fuel supply pipeline at a certain pressure, secondarily pressurizes the fuel by the high-pressure fuel pump and provides quantitative fuel for each cylinder. If a fuel pump is out of order, the fuel pump needs to be replaced, the fuel pump is generally controlled to operate by a fuel delivery system ECU (Electronic Control Unit), and since the information such as the model and electrical parameters of each fuel pump is different, the ECU needs to learn new fuel pump information again if the fuel pump is replaced, otherwise the following symptoms may occur: an oil pump below a rear seat gives out abnormal sound when the vehicle runs; the vehicle cannot accelerate, and particularly has a pause feeling during rapid acceleration; the vehicle is not ignited when being started, and the starting is difficult; and an engine fault lamp of the vehicle combination instrument is always on. Therefore, after replacement or repair of the fuel pump, it is necessary to have the fuel pump perform self-learning matching so that the ECU of the fuel delivery system maintains the most up-to-date fuel pump information.
In the prior art, the self-learning matching method of the fuel pump has the following problems: (1) each automobile brand is provided with special diagnosis equipment, and if the self-learning matching process of fuel pumps of various automobiles is to be realized, a plurality of special original factory equipment must be purchased, so that the cost is very high; (2) the existing original factory equipment needs a notebook or a flat plate and is provided with a diagnosis box, so that the original factory equipment is inconvenient to carry; (3) original factory equipment is all character display, and some use foreign language, inconvenient car owner looks over.
Disclosure of Invention
The matching device is suitable for fuel pumps of various different automobiles, and reduces the cost of self-learning matching of the fuel pumps.
In a first aspect, the application provides a matching method of a vehicle fuel pump, which is applied to vehicle-mounted equipment, and is used for updating fuel pump information in an electronic control unit of the fuel pump so that the electronic control unit is matched with the fuel pump currently used by a vehicle; the method comprises the following steps:
the vehicle-mounted equipment establishes communication connection with the electronic control unit;
the vehicle-mounted equipment acquires vehicle type information of a vehicle;
the vehicle-mounted equipment starts a self-learning matching process according to the vehicle type information;
the vehicle-mounted equipment sends a matching command of a vehicle fuel pump to the electronic control unit.
The beneficial effect of this application lies in: the matching device is suitable for fuel pumps of various different automobiles, the self-learning matching cost of the fuel pumps is reduced, and in addition, the matching device is convenient to carry.
Preferably, the vehicle-mounted equipment also stores diagnosis information corresponding to a plurality of different vehicle types; the matching method further comprises the following steps:
before the vehicle-mounted equipment sends the matching command to the electronic control unit, the vehicle-mounted equipment finds the corresponding diagnosis information according to the analyzed vehicle type and establishes communication connection with the electronic control unit according to the diagnosis information.
Preferably, the matching method further comprises: after the communication connection is established between the vehicle-mounted equipment and the electronic control unit, the vehicle-mounted equipment sends a fault code identification command to the electronic control unit so as to judge whether the electronic control unit has a fault code:
if so, the vehicle-mounted equipment sends a fault code clearing command to the electronic control unit to clear the fault code, and sends first prompt information to a user after clearing the fault code to prompt the user to execute a first preset operation;
if not, the vehicle-mounted equipment directly sends the first prompt information to a user;
and the vehicle-mounted equipment sends the matching command to the electronic control unit after the user finishes the first preset operation.
Preferably, the matching method further comprises:
after the user finishes the first preset operation, the vehicle-mounted equipment judges whether the user finishes the first preset operation correctly by reading the engine speed and the ignition state of the vehicle:
if so, the vehicle-mounted equipment sends the matching command to the electronic control unit so that the electronic control unit enters a self-learning process;
if not, the vehicle-mounted equipment sends the first prompt information to the user again to prompt the user to finish the first preset operation correctly.
Preferably, the matching method further comprises:
before the vehicle-mounted equipment sends the matching command to the electronic control unit, the vehicle-mounted equipment sends a safety verification command to the electronic control unit, and when the electronic control unit judges that the verification command is correct, the vehicle-mounted equipment sends the matching command to the electronic control unit.
Preferably, the matching method further comprises:
after receiving a feedback command sent by the electronic control unit, the vehicle-mounted equipment judges whether the electronic control unit is successfully matched according to the feedback command:
if so, the vehicle-mounted equipment sends second prompt information to the user to prompt the user to execute second preset operation so as to reset the electronic control unit;
if not, the vehicle-mounted equipment sends the matching command to the electronic control unit again.
Preferably, the fuel pump information includes a model number and/or operating parameters of the fuel pump.
In a second aspect, the present application further provides a self-learning method for an electronic control unit of a fuel pump, including:
the electronic control unit receives a matching command sent by the vehicle-mounted equipment;
the electronic control unit deletes the current fuel pump information;
and the electronic control unit reads new fuel pump information from the matching command for storage.
In a third aspect, the present application further provides a matching device for a vehicle fuel pump, the matching device comprising:
the storage module is internally pre-stored with a plurality of matching commands corresponding to different vehicle types;
the vehicle type identification module is used for sending a vehicle type identification command to the vehicle so as to read a vehicle type corresponding to the vehicle;
and the matching module is respectively connected with the storage module and the vehicle type recognition module and is used for sending the matching command to the electronic control unit according to the read vehicle type.
Preferably, the storage module stores diagnostic information corresponding to a plurality of different vehicle types; the matching device further comprises:
and the communication module is used for finding the corresponding diagnosis information according to the analyzed vehicle type and establishing communication connection with the electronic control unit according to the diagnosis information.
Preferably, the matching device further comprises:
the fault diagnosis module is used for sending a fault code identification command to the electronic control unit so as to judge whether the electronic control unit has a fault code:
if the fault code exists in the electronic control unit, the vehicle-mounted equipment sends a fault code clearing command to the electronic control unit to clear the fault code, and sends first prompt information to a user after the fault code is cleared so as to prompt the user to execute a first preset operation;
and if the fault code does not exist in the electronic control unit, the vehicle-mounted equipment directly sends the first prompt message to a user.
Preferably, the matching device further comprises:
the operation diagnosis module is used for judging whether the user correctly completes the first preset operation by reading the engine speed and the ignition state of the vehicle after the user completes the first preset operation:
if the first preset operation is completed correctly, the vehicle-mounted equipment sends the matching command to the electronic control unit so that the electronic control unit enters a self-learning process;
and if the first preset operation is not completed correctly, the vehicle-mounted equipment sends the first prompt message to the user again to prompt the user to complete the first preset operation correctly.
Preferably, the matching device further comprises:
and the safety check module is used for sending a safety check command to the electronic control unit, and when the electronic control unit judges that the check command is correct, the safety check module sends the matching command to the electronic control unit.
Preferably, the matching device further comprises:
the matching diagnosis module is used for judging whether the electronic control unit is successfully matched according to the feedback command after receiving the feedback command sent by the electronic control unit:
if the matching is successful, the vehicle-mounted equipment sends second prompt information to the user to prompt the user to execute second preset operation so as to reset the electronic control unit;
and if the matching is unsuccessful, the vehicle-mounted equipment sends the matching command to the electronic control unit again.
The present application further provides an in-vehicle apparatus, including:
a memory for storing a computer program;
a processor, configured to implement the matching method according to any of the above technical solutions when executing the computer program.
In a fourth aspect, the present application further provides a computer storage medium, where a computer program is stored, and when the computer program is executed by a processor, the matching method according to any of the above technical solutions is implemented.
Drawings
Embodiments of the present application are described more fully with reference to the accompanying drawings. The drawings are only for purposes of illustration and description, and are not intended to limit the scope of the present disclosure.
FIG. 1 is a flow chart of the steps of a matching method in an embodiment of the present application;
FIG. 2 is a schematic illustration of a matching device for a vehicle fuel pump in an embodiment of the present application;
FIG. 3 is a schematic view of a mating arrangement for a vehicle fuel pump in another embodiment of the present application; and
fig. 4 is a schematic diagram of an in-vehicle device in the embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The present application is further described with reference to the following drawings and detailed description, but not intended to be limited by the present application.
The application provides a matching method of a vehicle fuel pump, which is used for updating fuel pump information in an electronic control unit of the fuel pump so that the electronic control unit is matched with the fuel pump currently used by a vehicle; as shown in fig. 1, includes:
storing matching commands of fuel pump self-learning processes comprising a plurality of different vehicle types in vehicle-mounted equipment in advance;
when fuel pump self-learning matching is executed, the vehicle-mounted equipment is connected into a vehicle, a self-learning matching process is started, and the self-learning matching process specifically comprises the following steps:
the vehicle-mounted equipment sends a vehicle type identification command to the vehicle so as to read the vehicle type corresponding to the vehicle;
and the vehicle-mounted equipment sends a matching command to the electronic control unit according to the read vehicle type.
Specifically, the On-Board device in the present embodiment is preferably an OBD (On-Board diagnostics) device, and includes, but is not limited to, an OBD device, an On-Board electronic device, a terminal device connected to a vehicle ECU, and the like. The fuel pump information includes a model number and/or operating parameters of the fuel pump. Since the fuel pump self-learning matching flows of the vehicle types are different, before the OBD device is used, the fuel pump self-learning matching flows of different vehicle types are edited at the PC side, for example, the fuel pump self-learning matching flow nodes of the BMW320 vehicle type and the BENZ E200, commands sent by the flow nodes, content required to be prompted in each step and the like are edited. After the PC end finishes editing, fuel pump self-learning matching processes of all vehicle types are compiled and synthesized into a BIN file, the BIN file is compiled and combined into a BIN file, firstly, the BIN file is encrypted to prevent the content of the file from leaking, the encryption mode can use symmetric encryption or asymmetric encryption, for the encrypted BIN file, an OBD device can read the content through decryption, and secondly, the BIN file is compiled into a single BIN file to be conveniently burned into the OBD device. And finally, connecting the OBD device to a PC (personal computer) end by using a USB (universal serial bus) line, burning the generated BIN file into a memory of the OBD device by software of the PC end, storing the BIN file into an internal memory after the OBD device receives the BIN file as a diagnosis protocol, and using the diagnosis protocol as a flow file when the function of the OBD device is executed, so that the OBD device can be suitable for fuel pumps of various different vehicle types.
Specifically, when a user needs to perform self-learning matching of the fuel pump, the OBD device is firstly connected to an OBD interface of an automobile, the OBD device is powered through a 16-power pin and a 4-ground pin of the OBD interface, and after the OBD device is connected to the automobile, a 'START' button is pressed to START a self-learning matching program of a lower computer fuel pump in the OBD device. The self-learning matching process comprises the following steps: firstly, an OBD device sends a VIN (Vehicle Identification Number) reading command to a Vehicle, and since a protocol of a current Vehicle type cannot be confirmed at first, the VIN reading command of each protocol is sent in sequence until the Vehicle CAN identify and return VIN information, common protocols comprise CAN, KWP, ISO9141, PWM and VPW, communication parameters and commands of each protocol are different, and the protocols are written in a lower computer program, for example, a communication pin of the CAN protocol is 6.14, a baud rate is 500K, and the VIN reading command is 0x0807df 0209020000000000. The vehicle returns the VIN code information through the reply command, and a specific vehicle type can be analyzed from the 17-byte VIN code, for example, the VIN code is WDD2210222a253260, which indicates that the vehicle series is a gallop (BENZ), and the vehicle type is S350.
Further, after identifying the vehicle type, the OBD device sends a matching command for the fuel pump corresponding to the vehicle type to the ECU, where the matching command may be different for different vehicle types, and the matching command is obtained from a diagnostic protocol, typically a plurality of commands, such as 0x310001,0x310201, and so on. After receiving the matching command, the ECU deletes all old fuel pump information stored in the ECU, reads and stores fuel pump information corresponding to a fuel pump currently installed on a vehicle from the matching command, such as the model and operating parameters of the fuel pump, wherein the operating parameters comprise one or more parameters of flow, lift, suction lift, power and voltage of the fuel pump, and therefore self-learning matching of the fuel pump is achieved.
Through above-mentioned technical scheme, utilize same OBD device can realize carrying out the self-learning matching flow of fuel pump to the car of multiple different motorcycle types, reduce the cost that the fuel pump was learned to oneself and is matchd, in addition, the OBD device portable of this application.
In one embodiment, diagnostic protocols corresponding to a plurality of different vehicle types are stored in the vehicle-mounted equipment; the matching method further comprises the following steps:
before the vehicle-mounted equipment sends a matching command to the electronic control unit, the vehicle-mounted equipment finds a corresponding diagnosis protocol according to the analyzed vehicle type and establishes communication connection with the electronic control unit according to the diagnosis protocol.
Specifically, after the vehicle type of the vehicle is identified, according to the analyzed vehicle type, the OBD device searches diagnostic information corresponding to the vehicle type in a pre-stored diagnostic protocol, wherein the diagnostic information mainly comprises one or more information of a communication pin, a protocol type, a communication baud rate, a filtering ID of a fuel supply system, a system activation command, a data acquisition command, a matching command for self-learning of a fuel pump and a safety check algorithm of an Electronic Control Unit (ECU) of the vehicle type. According to the diagnostic information of the ECU, a diagnostic communication link with the ECU is established, for example, communication parameters are set to be CAN standard protocol, baud rate is 500K, communication pins are 6 and 14, and system filtering IDs are 0xfc00 and 0xfd 00. After the OBD device and the ECU successfully establish a communication connection, the OBD device sends a system activation command to the ECU, for example, 0x1001, the ECU returns 0x5001 indicating that the activation is successful, and the OBD device can perform normal diagnostic communication with the ECU.
After the OBD and the ECU establish normal diagnosis communication, the OBD sends voice prompt information to a user to prompt the user to complete a first preset operation before the fuel pump performs self-learning, so that a subsequent self-learning matching process is performed conveniently, for example, the user is prompted by voice that the vehicle needs to be shut down, and an ignition switch is turned on after the vehicle is in a static state. It should be noted that, a voice chip and a speaker module are integrated in the OBD device in this embodiment, and the voice chip can receive the call of a program, convert incoming data into a voice signal and transmit the voice signal to the speaker module for playing, thereby implementing a function of performing voice prompt on a user.
In one embodiment, the matching method further comprises:
after the communication connection is established between the vehicle-mounted equipment and the electronic control unit, the vehicle-mounted equipment sends a fault code identification command to the electronic control unit so as to judge whether the electronic control unit has a fault code:
if so, the vehicle-mounted equipment sends a fault code clearing command to the electronic control unit to clear the fault code, and sends first prompt information to the user after clearing the fault code to prompt the user to execute a first preset operation;
if not, the vehicle-mounted equipment directly sends first prompt information to the user;
and the vehicle-mounted equipment sends a matching command to the electronic control unit after the user finishes the first preset operation.
Specifically, after the OBD and the ECU establish a communication connection, the OBD first sends a fault identification command, for example, 0x190208, to the ECU to identify whether there is a fault code in the ECU, and the ECU receives the fault identification command and then replies fault code data, for example, the fault code data is 0x590208, which indicates no fault code, the fault code data is 0x590208900001, which indicates a fault code 9000, and the fault code status is 01, which indicates a current fault code or a historical fault code. If the ECU has a fault, the OBD sends a fault code clearing command to the ECU to clear the fault code, such as 0x14ffffff, and sends a fault code identification command again after clearing, judges whether the fault code still exists, if the fault code still exists, the OBD indicates that the current ECU has a fault, and sends prompt information to prompt a user to execute a self-learning matching process after the fault of the ECU is repaired; if no fault code exists in the ECU or the fault code can be cleared, first prompt information is directly sent to a user to prompt the user that the engine needs to be shut down, and after the vehicle is in a static state, an ignition switch is turned on to complete first preset operation. It should be noted that, first prompt information may be voice information or text information, and a voice chip and a speaker module are integrated in the OBD device in this embodiment, and the voice chip can accept the calling of a program, and converts incoming data into a voice signal and transmits the voice signal to the speaker module for playing, thereby realizing the function of performing voice prompt on a user, and facilitating the user to know the operating condition of a vehicle.
In one embodiment, the matching method further comprises:
after the user finishes the first preset operation, the vehicle-mounted equipment judges whether the user correctly finishes the first preset operation by reading the engine speed and the ignition state of the vehicle:
if so, the vehicle-mounted equipment sends a matching command to the electronic control unit so that the electronic control unit enters a self-learning process;
if not, the vehicle-mounted equipment sends the first type of voice prompt information to the user again so as to prompt the user to finish the first preset operation correctly.
Specifically, after the user completes the first preset operation, the "OK" button on the OBD device is pressed, the OBD device sends an engine speed reading command and an ignition state obtaining command to the vehicle to check whether the user operates correctly, for example, 0X220901 is sent to read the current engine speed, the engine ECU replies the engine speed data to the OBD device, for example, 0X6209010302 is sent, and then the current engine speed is calculated according to a rotation speed calculation algorithm, for example, Y is X1 × 256+ X2, X1 is 03, and X2 is 02, so that the calculated engine speed is 770. When the OBD judges that the rotating speed of the engine is not 0 or the state of the ignition switch is not ON, the voice prompts a user to operate incorrectly, prompts the vehicle owner that the vehicle needs to be in a static state, and then turns ON the ignition switch.
In one embodiment, the matching method further comprises:
before the vehicle-mounted equipment sends the matching command to the electronic control unit, the vehicle-mounted equipment sends a safety verification command to the electronic control unit, and when the electronic control unit judges that the verification command is correct, the vehicle-mounted equipment sends the matching command to the electronic control unit.
Specifically, after a user correctly completes a first preset operation, the OBD device performs security verification of the ECU by sending a security verification command to the ECU, so as to prevent illegal operation of the ECU, for example, the OBD device sends a 0x2701 command first, the ECU replies SEED data, for example, 0x670111223344, wherein 11223344 is the SEED data, after the OBD device obtains the SEED data, the SEED data is calculated into a CODE by a specific algorithm, and only if the CODE is calculated correctly, the ECU allows execution of a self-learning matching process of the fuel pump. The OBD device can calculate a CODE by the SEED through an algorithm stored in a diagnostic protocol, for example, the CODE calculated by the algorithm of 0x11223344 is 0x55667788, the calculated CODE is filled into a safety check command and sent to the ECU, for example, 0x270255667788, after the ECU receives the CODE, the ECU can carry out calculation check to judge whether the CODE is correct, if the CODE is correct, correct data is returned to the OBD device, for example, 0x6202, and therefore safety check is passed.
In one embodiment, after receiving a feedback command sent by the electronic control unit, the vehicle-mounted device determines whether the electronic control unit is successfully matched according to the feedback command:
if so, the vehicle-mounted equipment sends second prompt information to the user to prompt the user to execute second preset operation so as to reset the electronic control unit;
if not, the vehicle-mounted equipment sends the matching command to the electronic control unit again.
Specifically, after receiving a matching command, the ECU deletes previous fuel pump information, reads new fuel pump information from the matching command, and stores the new fuel pump information, after storing the fuel pump information, the ECU sends a feedback command, such as 0x710001000 and 0x71020100, to the OBD device, and the OBD device receives and determines the feedback command, and if the feedback command is abnormal, such as the feedback command is 0x7f2e21, the matching is failed, and the self-learning matching process needs to be executed again; if the feedback command is normal, the fuel pump self-learning matching is finished, and the user is prompted to perform a second preset operation through voice, for example, the ignition switch is turned OFF, and then turned ON to reset the ECU. After the ECU is reset, the OBD device prompts a user that the fuel pump is successfully matched through voice, the user can open the engine to test, and judge whether the engine runs smoothly, whether ignition is normal, whether accelerator response is timely and the like, if the engine runs normally, the fuel pump self-learning matching function is successfully executed, and if the engine runs abnormally, the fuel pump self-learning matching function can be executed again.
The embodiment of the application provides a matching method of a vehicle fuel pump, and all processes of the matching method comprise the following steps:
editing and modifying self-learning matching processes of fuel pumps of different vehicle types by using software at a PC (personal computer) end to form matching commands; compiling each modified matching command into a BIN file, and burning the BIN file into the OBD device through a USB data line to be used as a diagnosis protocol; when the OBD device is used, the OBD device is plugged into an OBD interface of a vehicle, a START button in the OBD device is pressed to START a fuel pump matching self-learning process:
the OBD device firstly sends a vehicle identification command (VIN code) to a vehicle to obtain the VIN code of the vehicle, judges the current vehicle type according to the VIN code, and searches a corresponding matching command, such as a Benz E200 vehicle type or a BMW320 vehicle type, in a diagnosis protocol according to the vehicle type; finding out corresponding diagnosis information in a diagnosis protocol according to the current vehicle type, and establishing communication connection with the ECU according to the diagnosis information; after the communication connection is successfully established, a fault recognition command is sent to the ECU, if a fault code returns, a fault code clearing command is sent, if the fault code is not cleared successfully, the user is prompted by voice that the ECU has a fault, and after the fault is repaired, a self-learning matching process is executed; if no fault code exists or the fault code is cleared, the voice prompts the owner that the vehicle needs to be in a static state, and then the ignition switch is turned on; the user stops the vehicle, turns ON an ignition switch and presses an OK key, the OBD device sends a command to an engine system ECU to read the current rotating speed and the state of the ignition switch of the engine, conditions are met, and if the conditions are not met, the user is prompted by voice; if the conditions are met, the OBD device sends a safety check command to the ECU of the fuel pump transmission system to prevent illegal operation of the engine, the safety check algorithm is in a diagnostic protocol and is used for calculating a CODE and sending the CODE to the ECU of the fuel pump transmission system for verification, and if the safety check is passed, the OBD device sends a matching command corresponding to the fuel pump to the ECU; after receiving the matching command, the ECU deletes all the old fuel pump information stored in the ECU, reads and stores the fuel pump information corresponding to the fuel pump currently installed on the vehicle from the matching command, such as the model and the operating parameters of the fuel pump, wherein the operating parameters comprise one or more parameters of flow, lift, suction lift, power and voltage of the fuel pump, so that self-learning matching of the fuel pump is realized; after the ECU saves the information of the fuel pump, the ECU sends a feedback command to the OBD device, the OBD device receives the feedback command and judges whether the matching is successful, if the feedback command is abnormal, the matching is failed, and a self-learning matching process needs to be executed again; if the feedback command is normal, the fuel pump self-learning matching is finished, and the user is prompted by voice to turn off the ignition switch and then turn on the ignition switch again to reset the ECU; after the ECU is reset, the user is prompted by voice that the matching self-learning is successful, the user can open the engine to test, whether the operation of the engine is smooth or not is judged, if the operation of the engine is normal, the new fuel pump is successfully matched, and if the operation of the engine is abnormal, the self-learning matching process of the fuel pump can be repeatedly executed.
As shown in fig. 2, the present application also provides a matching device of a fuel pump for a vehicle, the matching device including:
the storage module 101 is used for storing a plurality of matching commands corresponding to different vehicle types; the vehicle type identification module 103 is used for sending a vehicle type identification command to the vehicle so as to read a vehicle type corresponding to the vehicle;
and the matching module 102 is respectively connected with the storage module 101 and the vehicle type recognition module 103 and is used for sending the matching command to the electronic control unit according to the read vehicle type.
In an embodiment of the matching device for a vehicle fuel pump, the storage module 101 is further configured to store diagnostic information corresponding to a plurality of different vehicle types;
as shown in fig. 3, the matching device further includes a communication module 104: the communication module 104 is configured to find corresponding diagnostic information according to the analyzed vehicle type, and establish communication connection with the electronic control unit according to the diagnostic information.
In one embodiment of the matching device for a fuel pump of a vehicle, as shown in fig. 3, the matching device further comprises a fault diagnosis module 105 for sending a fault code identification command to the electronic control unit to determine whether the electronic control unit has a fault code:
if the electronic control unit has the fault code, the vehicle-mounted equipment sends a fault code clearing command to the electronic control unit to clear the fault code, and sends first prompt information to a user after the fault code is cleared to prompt the user to execute a first preset operation;
and if the electronic control unit does not have the fault code, the vehicle-mounted equipment directly sends first prompt information to the user.
In one embodiment of the matching device of the vehicle fuel pump, as shown in fig. 3, the matching device further includes an operation diagnosis module 106, and after the user completes the first preset operation, the operation diagnosis module 106 determines whether the user correctly completes the first preset operation by reading the engine speed and the ignition state of the vehicle:
if the first preset operation is completed correctly, the vehicle-mounted equipment sends a matching command to the electronic control unit so that the electronic control unit enters a self-learning process;
if the first preset operation is not completed correctly, the vehicle-mounted equipment sends the first prompt information to the user again to prompt the user to complete the first preset operation correctly.
In one embodiment of the matching device for a vehicle fuel pump, as shown in fig. 3, the matching device further comprises a safety check module 107, wherein the safety check module is configured to send a safety check command to the electronic control unit, and when the electronic control unit determines that the check command is correct, the safety check module sends a matching command to the electronic control unit.
In one embodiment of the matching device for the vehicle fuel pump, as shown in fig. 3, the matching device further includes a matching diagnosis module 108, and the matching diagnosis module 108 is configured to determine whether the electronic control unit is successfully matched according to a feedback command after receiving the feedback command sent by the electronic control unit:
if the matching is successful, the vehicle-mounted equipment sends second prompt information to the user to prompt the user to execute second preset operation so as to reset the electronic control unit;
and if the matching is unsuccessful, the vehicle-mounted equipment sends a matching command to the electronic control unit again.
Specifically, in this embodiment, after the vehicle type identification module 102 identifies the vehicle type of the current vehicle, according to the analyzed vehicle type, the diagnostic information corresponding to the vehicle type is searched in the diagnostic protocol pre-stored in the storage module, where the diagnostic information mainly includes one or more of a communication pin, a protocol type, a communication baud rate, a filtering ID of a fuel supply system, a system activation command, a data acquisition command, a matching command for self-learning of a fuel pump, and a safety check algorithm of an ECU of the vehicle type. The matching device establishes a diagnosis communication link with the ECU according to the diagnosis information of the ECU, sends a system activation command to the ECU after the matching device successfully establishes communication connection with the ECU, and can carry out normal diagnosis communication with the ECU after the matching device successfully activates.
After the matching device and the ECU establish normal diagnosis communication, voice prompt information is sent to a user, so that the user is prompted to complete a first preset operation before the fuel pump performs self-learning, and a subsequent self-learning matching process is conveniently executed. It should be noted that, a voice chip and a speaker module are integrated in the matching device in this embodiment, and the voice chip can receive the call of a program, convert incoming data into a voice signal, and transmit the voice signal to the speaker module for playing, thereby implementing a function of performing voice prompt on a user.
After the user finishes the first preset operation, the matching device sends a matching command of the fuel pump to the ECU, the matching commands corresponding to different vehicle types may be different, and the matching command is obtained from the diagnosis protocol. After receiving the matching command, the ECU deletes all old fuel pump information stored in the ECU, reads and stores fuel pump information corresponding to a fuel pump currently installed on a vehicle from the matching command, such as the model and operating parameters of the fuel pump, wherein the operating parameters comprise one or more parameters of flow, lift, suction lift, power and voltage of the fuel pump, and therefore self-learning matching of the fuel pump is achieved.
Through above-mentioned technical scheme, the matching device in this embodiment is applicable to the fuel pump of multiple different motorcycle types, reduces the fuel pump and learns the cost of matching by oneself, in addition, need not to use the PC end in the matching device use of this application, portable, and can carry out voice prompt to the user, compare in traditional word suggestion, convenience of customers knows the running condition of car more, suggestion user's experience.
The application also provides a self-learning method of the electronic control unit of the fuel pump, which comprises the following steps:
the electronic control unit receives a matching command sent by the vehicle-mounted equipment;
the electronic control unit deletes the current fuel pump information;
the electronic control unit reads new fuel pump information from the matching command for storage.
As shown in fig. 4, the present application also provides an in-vehicle apparatus 4 including:
a memory 401 for storing a computer program;
a processor 402 for implementing the matching method in any of the above embodiments when executing a computer program.
The present application further provides a computer storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the matching method in any one of the above embodiments is implemented.
The beneficial effects of the embodiment of the application are that: the matching device is convenient to carry, can be matched with the vehicle to carry out voice prompt on a user, and is convenient for the user to know the running condition of the vehicle.
The above description is only a preferred embodiment of the present application and is not intended to limit the scope of the present application, and it should be understood that all modifications and obvious variations of the present application, which are made by the present specification and drawings, should be considered as included in the present application.
Claims (10)
1. A matching method of vehicle fuel pumps is applied to vehicle-mounted equipment and is characterized by comprising the following steps:
the vehicle-mounted equipment establishes communication connection with the electronic control unit;
the vehicle-mounted equipment acquires vehicle type information of a vehicle;
the vehicle-mounted equipment starts a self-learning matching process according to the vehicle type information;
the vehicle-mounted equipment sends a matching command of a vehicle fuel pump to the electronic control unit.
2. The matching method according to claim 1, wherein diagnostic information corresponding to a plurality of different vehicle types is stored in an on-board device; the establishing of the communication connection with the ECU specifically includes:
before the vehicle-mounted equipment sends the matching command to the electronic control unit, the vehicle-mounted equipment finds the corresponding diagnosis information according to the analyzed vehicle type and establishes communication connection with the electronic control unit according to the diagnosis information.
3. The matching method according to claim 2, further comprising: after the communication connection is established between the vehicle-mounted equipment and the electronic control unit, the vehicle-mounted equipment sends a fault code identification command to the electronic control unit so as to judge whether the electronic control unit has a fault code:
if so, the vehicle-mounted equipment sends a fault code clearing command to the electronic control unit to clear the fault code, and sends first prompt information to a user after clearing the fault code to prompt the user to execute a first preset operation;
if not, the vehicle-mounted equipment directly sends the first prompt information to a user;
and the vehicle-mounted equipment sends the matching command to the electronic control unit after the user finishes the first preset operation.
4. The matching method according to claim 3, further comprising:
after the user finishes the first preset operation, the vehicle-mounted equipment judges whether the user finishes the first preset operation correctly by reading the engine speed and the ignition state of the vehicle:
if so, the vehicle-mounted equipment sends the matching command to the electronic control unit so that the electronic control unit enters a self-learning process;
if not, the vehicle-mounted equipment sends the first prompt information to the user again to prompt the user to finish the first preset operation correctly.
5. The matching method according to claim 1, further comprising:
before the vehicle-mounted equipment sends the matching command to the electronic control unit, the vehicle-mounted equipment sends a safety verification command to the electronic control unit, and when the electronic control unit judges that the verification command is correct, the vehicle-mounted equipment sends the matching command to the electronic control unit.
6. The matching method according to claim 1, further comprising:
after receiving a feedback command sent by the electronic control unit, the vehicle-mounted equipment judges whether the electronic control unit is successfully matched according to the feedback command:
if so, the vehicle-mounted equipment sends second prompt information to the user to prompt the user to execute second preset operation so as to reset the electronic control unit;
if not, the vehicle-mounted equipment sends the matching command to the electronic control unit again.
7. The matching method according to claim 1, wherein the self-learning matching process of a plurality of different vehicle types is edited at a computer end in advance to form a plurality of matching commands before the vehicle-mounted device is used, and the matching commands are burned into the vehicle-mounted device.
8. A self-learning method of an electronic control unit of a fuel pump is characterized by comprising the following steps:
the electronic control unit receives a matching command sent by the vehicle-mounted equipment;
the electronic control unit deletes the current fuel pump information;
and the electronic control unit reads new fuel pump information from the matching command for storage.
9. An in-vehicle apparatus, characterized by comprising:
a memory for storing a computer program;
a processor for implementing the matching method as claimed in any one of claims 1-7 when executing the computer program.
10. A computer storage medium, characterized in that the computer storage medium has stored thereon a computer program which, when being executed by a processor, carries out the matching method according to any one of claims 1-7.
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| CN202010841434.XA CN111994016A (en) | 2020-08-20 | 2020-08-20 | Matching method and device for vehicle fuel pump, vehicle-mounted equipment and storage medium |
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| CN202010841434.XA CN111994016A (en) | 2020-08-20 | 2020-08-20 | Matching method and device for vehicle fuel pump, vehicle-mounted equipment and storage medium |
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Application publication date: 20201127 |