A method and device for identifying a clutch switch signal

Abstract

The present application discloses a method and device for identifying a clutch switch signal. The method is applied to a vehicle and includes: an electronic control unit (ECU) in the vehicle enables ETC1 message, ETC2 message, and ETC3 message; if the ECU receives the ETC1 message, ETC2 message, and ETC3 message within a preset time, it identifies the ETC1 message or the ETC2 message to obtain a first clutch signal; if the ECU does not receive any one of the ETC1 message, ETC2 message, and ETC3 message within the preset time, it identifies the input of the vehicle's bus interface or hardwired interface to obtain a second clutch signal. The ECU can adapt to a variety of gearboxes and clutch switch signals, improving the adaptability of the ECU and reducing the workload of modifying the program when the ECU is assembled in different vehicles.

Description

Technical Field

[0001] The present application relates to the technical field of vehicles, and particularly to a method and device for identifying clutch switch signals. Background Art

[0002] With the development of the automotive industry, there are more and more types of transmissions assembled in vehicles, and the types of clutch switch signals received by the engine control unit (ECU) are also increasing. Common clutch switch signals include hard wire signals, CCVS message signals, ETC1 message signals, etc. Therefore, when engine manufacturers match different models of vehicles or transmissions from different manufacturers, they need to make targeted matching for the function of receiving clutch switch signals in the ECU internal program, resulting in a long development cycle and inconvenient management of the ECU. Moreover, during the new development stage of variant products of the same series of vehicles by vehicle manufacturers, the sample vehicles equipped with different clutches have different program requirements for the ECU, resulting in frequent development and rewriting of the data in the ECU, increasing the workload of technicians. Summary of the Invention

[0003] In order to solve the above technical problems, the present application provides a method and device for identifying clutch switch signals, so that the ECU can identify multiple clutch switch signals.

[0004] In order to achieve the above object, the technical solutions provided by the embodiments of the present application are as follows:

[0005] The embodiments of the present application provide a method for identifying clutch switch signals, which is applied to a vehicle and includes:

[0006] The electronic control unit ECU in the vehicle enables ETC1 message, ETC2 message and ETC3 message;

[0007] If the ECU receives the ETC1 message, ETC2 message and ETC3 message within a preset time, then identify the ETC1 message or the ETC2 message to obtain a first clutch signal; the first clutch signal indicates the clutch state corresponding to the electro-mechanical automatic transmission or the hydraulic automatic transmission;

[0008] If the ECU does not receive any one of the ETC1 message, ETC2 message and ETC3 message within the preset time, then identify the input of the vehicle's bus interface or hard wire interface to obtain a second clutch signal; the second clutch signal indicates the clutch state corresponding to the mechanical transmission.

[0009] As a possible implementation manner, if the ECU receives the ETC1 message, ETC2 message and ETC3 message within a preset time, then identify the ETC1 message or the ETC2 message to obtain a first clutch signal, including:

[0010] If the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the ETC1 message. If the identification is successful, it obtains the first clutch signal;

[0011] If the identification fails, it identifies the ETC2 message and obtains the first clutch signal.

[0012] As a possible implementation, the first clutch signal includes a driveline status signal or a shift process status signal. If the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the ETC1 message. If the identification is successful, obtaining the first clutch signal includes:

[0013] If the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the first and second bits of the first byte in the ETC1 message. If the identification is successful, it obtains the driveline status signal;

[0014] If the identification fails, it identifies the fifth and sixth bits of the first byte in the ETC1 message. If the identification is successful, it obtains the shift process status signal.

[0015] As a possible implementation, the first clutch signal further includes a current gear signal. If the identification fails, identifying the ETC2 message and obtaining the first clutch signal includes:

[0016] If the identification fails, it identifies the fourth byte in the ETC2 message. If the identification is successful, it obtains the current gear signal.

[0017] As a possible implementation, the first clutch signal further includes a clutch disengagement percentage signal. The method further includes:

[0018] If the signal identification in the ETC2 message fails, it identifies the fourth byte in the ETC1 message. If the identification is successful, it obtains the clutch disengagement percentage signal.

[0019] As a possible implementation, if the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the vehicle's bus interface input or hardwired interface input to obtain the second clutch signal, including:

[0020] If the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the vehicle's hardwired interface input. If the identification is successful, it obtains the second clutch information;

[0021] If the identification fails, it identifies the vehicle's bus interface input and obtains the second clutch information.

[0022] As a possible implementation, the method further includes:

[0023] If the ECU does not receive the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, obtain a second clutch signal sent by a vehicle bus signal or a hardwired signal; the second clutch signal indicates the clutch state corresponding to the mechanical transmission.

[0024] According to the above method for identifying the clutch switch signal, the present application further provides a device for identifying the clutch switch signal. The device is applied to an electronic control unit ECU in a vehicle and includes:

[0025] An enabling module, configured to enable the ETC1 message, the ETC2 message, and the ETC3 message;

[0026] A first obtaining module, configured to, if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, identify the ETC1 message or the ETC2 message to obtain a first clutch signal; the first clutch signal indicates the clutch state corresponding to an electronically controlled mechanical automatic transmission or a hydraulic automatic transmission;

[0027] A second obtaining module, configured to, if the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, identify an input of a vehicle bus interface or a hardwired interface to obtain a second clutch signal; the second clutch signal indicates the clutch state corresponding to the mechanical transmission.

[0028] As a possible implementation, if the first obtaining module includes:

[0029] A first identifying module, configured to, if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, identify the ETC1 message, and if the identification is successful, obtain the first clutch signal;

[0030] A second identifying module, configured to, if the identification fails, identify the ETC2 message to obtain the first clutch signal.

[0031] As a possible implementation, the first clutch signal includes a driveline state signal or a shift process state signal. The first identifying module is specifically configured to:

[0032] If the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, identify the first bit and the second bit of the first byte in the ETC1 message, and if the identification is successful, obtain the driveline state signal;

[0033] If the recognition fails, the fifth and sixth bits of the first byte of the ETC1 message are recognized. If the recognition is successful, the shift process status signal is obtained.

[0034] As can be seen from the above technical solutions, the present application has the following beneficial effects:

[0035] The embodiment of the present application provides a method for recognizing a clutch switch signal. The method is applied to a vehicle and includes: an electronic control unit ECU in the vehicle enables ETC1 messages, ETC2 messages, and ETC3 messages; if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, the ETC1 message or the ETC2 message is recognized to obtain a first clutch signal; the first clutch signal indicates the clutch state corresponding to an electronically controlled mechanical automatic transmission or a hydraulic automatic transmission; if the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, the bus interface input or the hard wire interface input of the vehicle is recognized to obtain a second clutch signal; the second clutch signal indicates the clutch state corresponding to a mechanical transmission.

[0036] It can be seen from this that in the method for recognizing a clutch switch signal provided by the embodiment of the present application, after the electronic control unit ECU enables the ETC1 message, the ETC2 message, and the ETC3 message, the type of the transmission in the vehicle is judged according to the messages received within the preset time, so as to recognize the clutch switch signal corresponding to this type, and further the effect of recognizing the clutch switch signals corresponding to multiple transmissions can be achieved. In this way, the ECU in the method provided by the embodiment of the present application can adapt to multiple transmissions and clutch switch signals, improving the adaptability of the ECU and reducing the workload of modifying the program when the ECU is assembled in different vehicles. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0038] Figure 1 Schematic diagram of a method for recognizing a clutch switch signal provided by an embodiment of the present application;

[0039] Figure 2 Schematic diagram of a device for recognizing a clutch switch signal provided by an embodiment of the present application. Detailed Embodiments

[0040] To help better understand the solution provided by the embodiments of the present application, before introducing the method provided by the embodiments of the present application, the application scenarios of the solution of the embodiments of the present application will be introduced first.

[0041] With the development of the automotive industry, the types of transmissions assembled in vehicles are increasing, and the types of clutch switch signals received by the engine control unit (ECU) are also increasing. Common clutch switch signals include hardwired signals, CCVS (Current Controlled Voltage Source) message signals, ETC1 message signals, etc. Therefore, when engine manufacturers match different models of vehicles or transmissions from different manufacturers, they need to make targeted matches to the function of receiving clutch switch signals in the ECU internal program, resulting in a long development cycle and inconvenient management of the ECU. Moreover, during the new development stage of variant products of the same series of vehicles by vehicle manufacturers, the sample vehicles equipped with different clutches have different program requirements for the ECU, resulting in frequent development and rewriting of the data in the ECU, increasing the workload of technicians.

[0042] To solve the above technical problems, the embodiments of the present application provide a method for identifying clutch switch signals. The method is applied to a vehicle and includes: the electronic control unit ECU in the vehicle enables ETC1 messages, ETC2 messages, and ETC3 messages; if the ECU receives ETC1 messages, ETC2 messages, and ETC3 messages within a preset time, it identifies the ETC1 message or the ETC2 message to obtain a first clutch signal; the first clutch signal indicates the clutch state corresponding to an electronically controlled mechanical automatic transmission or a hydraulic automatic transmission; if the ECU does not receive any of the ETC1 messages, ETC2 messages, and ETC3 messages within the preset time, it identifies the input of the vehicle's bus interface or hardwired interface to obtain a second clutch signal; the second clutch signal indicates the clutch state corresponding to a mechanical transmission.

[0043] It can be seen that in the method for identifying clutch switch signals provided by the embodiments of the present application, after the electronic control unit ECU enables ETC1 messages, ETC2 messages, and ETC3 messages, it determines the type of transmission in the vehicle based on the messages received within the preset time, thereby identifying the clutch switch signals corresponding to this type, and further achieving the effect of identifying the clutch switch signals corresponding to multiple transmissions. In this way, the ECU in the method provided by the embodiments of the present application can be adapted to multiple transmissions and clutch switch signals, improving the adaptability of the ECU and reducing the workload of modifying the program when the ECU is assembled in different vehicles.

[0044] To make the above objects, features, and advantages of the present application more obvious and understandable, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] The method for identifying a clutch switch signal is applied to a vehicle. Refer to Figure 1 This figure is a schematic diagram of a method for identifying a clutch switch signal provided by an embodiment of the present application.

[0046] As Figure 1 shown, the method for identifying a clutch switch signal provided by an embodiment of the present application includes:

[0047] S101: The electronic control unit ECU in the vehicle enables the ETC1 message, the ETC2 message, and the ETC3 message.

[0048] It should be noted that ETC1, ETC2, and ETC3 in the embodiments of the present application are all message formats. After the electronic control unit enables the ETC1 message in the embodiments of the present application, the ECU can receive and identify the ETC1 message. Similarly, after the ECU enables the ETC2 message and the ECT3 message, the ECU can receive and identify the ECT2 message and the ECT3 message. In the embodiments of the present application, when the ECU enables the ETC1 message, the ETC2 message, and the ETC3 message, the ECU can receive and identify the ETC1 message, the ETC2 message, and the ETC3 message.

[0049] S102: If the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, then identify the ETC1 message or the ETC2 message to obtain a first clutch signal; the first clutch signal indicates the clutch state corresponding to an electronically controlled mechanical automatic transmission or a hydraulic automatic transmission.

[0050] It should be noted that if the ECU receives the ETC1, ETC2 message, and the ETC3 message within a preset time, it means that the transmission in the vehicle may be an electronically controlled mechanical automatic transmission (Automated Manual Transmission, AMT) or a hydraulic automatic transmission (Auto Transmission, AT). Generally, an electronically controlled mechanical automatic transmission and a hydraulic automatic transmission include a transmission control unit (Transmission-Control-Unit, TCU), and the ECU can receive the ETC1, ETC2 message, and the ETC3 message.

[0051] As a possible implementation, if the ECU receives an ETC1 message, an ETC2 message, and an ETC3 message within a preset time, it will identify the ETC1 message. If the identification is successful, a first clutch signal will be obtained; if the identification fails, it will identify the ETC2 message to obtain the first clutch signal. It should be noted that in the embodiments of the present application, the identification priority of the ETC1 message is higher than that of the ETC2 message. The ECU first identifies the ETC1 message and then identifies the ETC2 message after the identification of the ETC1 message fails.

[0052] Specifically, the first clutch signal includes a driveline status signal or a shift process status signal. It should be noted that the present application can determine the status of the clutch through the driveline status signal or the shift process status signal. Generally speaking, the driveline status indicated by the driveline status signal is consistent with the status of the clutch. When the shift process status signal indicates that the vehicle is shifting gears, the clutch is in the disengaged state; when the shift process status signal indicates that the vehicle is not shifting gears, the clutch is in the engaged state.

[0053] If the ECU receives an ETC1 message, an ETC2 message, and an ETC3 message within a preset time, it will identify the first bit and the second bit of the first byte in the ETC1 message. If the identification is successful, a driveline status signal will be obtained; if the identification fails, it will identify the fifth bit and the sixth bit of the first byte in the ETC1 message. If the identification is successful, a shift process status signal will be obtained. It should be noted that the applicant of the present application has found that the driveline status signal indicates the status of the clutch more accurately, and the driveline status signal is more commonly used in currently applied vehicles. Therefore, the present application preferentially identifies the driveline status signal in the ETC1 message. If the identification of the driveline status signal fails, the shift process status signal in the ETC1 message will be identified.

[0054] If the identification of the shift process status signal fails, the embodiments of the present application will identify the fourth byte in the ETC2 message. If the identification is successful, a current gear signal will be obtained. The first clutch signal also includes a current gear signal. The current gear signal indicates the current gear of the vehicle. When the vehicle is in gear, the clutch is in the engaged state; when the vehicle is not in gear, the clutch is in the disengaged state.

[0055] As a possible implementation, if the identification of the previous gear signal in the ETC2 message fails, the fourth byte in the ETC1 message can also be identified. If the identification is successful, a clutch disengagement percentage signal will be obtained. The first clutch signal also includes a clutch disengagement percentage signal. The clutch disengagement percentage signal indicates the disengagement percentage of the vehicle's clutch. When the disengagement percentage of the clutch is 100%, the clutch is in the disengaged state; when the disengagement percentage of the clutch is less than 100%, the clutch is in the engaged state.

[0056] S103: If the ECU does not receive any one of the ETC1 message, ETC2 message, and ETC3 message within a preset time, then identify the second clutch signal by recognizing the vehicle's bus interface input or hardwired interface input; the second clutch signal indicates the clutch state corresponding to the mechanical transmission.

[0057] It should be noted that if the ECU does not receive any one of the ETC1 message, ETC2 message, and ETC3 message within a preset time. This indicates that the vehicle's transmission may be a mechanical transmission, and the second clutch signal can be obtained by recognizing the vehicle's bus interface input or hardwired interface input. As a possible implementation, since the hardware interface input signal of the vehicle is relatively fast and the signal error rate is relatively low, the ECU can first recognize the vehicle's hardwired interface input. If the recognition is successful, the second clutch information is obtained; if the recognition fails, then recognize the vehicle's bus interface input to obtain the second clutch information.

[0058] In actual applications, there are some vehicles with mechanical transmissions, but their ECUs still have some incomplete message signals. In some possible embodiments, if the ECU does not receive the ETC1 message, ETC2 message, and ETC3 message within a preset time, then obtain the second clutch signal sent by the bus signal or hardwired signal on the vehicle; the second clutch signal indicates the clutch state corresponding to the mechanical transmission.

[0059] In summary, in the method for identifying the clutch switch signal provided by the embodiments of the present application, after enabling the ETC1 message, ETC2 message, and ETC3 message, the electronic control unit ECU determines the type of the transmission in the vehicle by receiving the messages within a preset time, thereby identifying the clutch switch signal corresponding to this type, and further can achieve the effect of identifying the clutch switch signals corresponding to multiple transmissions. In this way, the ECU in the method provided by the embodiments of the present application can adapt to multiple transmissions and clutch switch signals, improving the adaptability of the ECU and reducing the workload of modifying the program when the ECU is assembled in different vehicles.

[0060] According to the method for identifying the clutch switch signal provided in the above embodiments, the embodiments of the present application further provide a device for identifying the clutch switch signal, and this device is applied to the electronic control unit ECU in the vehicle.

[0061] See Figure 2 , this figure is a schematic diagram of a device for identifying the clutch switch signal provided by the embodiments of the present application.

[0062] As Figure 2 shown, the device for identifying the clutch switch signal provided by the embodiments of the present application includes:

[0063] The enabling module 100 is used to enable the ETC1 message, the ETC2 message, and the ETC3 message;

[0064] The first obtaining module 200 is configured to, if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, identify the ETC1 message or the ETC2 message to obtain a first clutch signal; the first clutch signal indicates the clutch state corresponding to the electro-mechanical automatic transmission or the hydraulic automatic transmission;

[0065] The second obtaining module 300 is configured to, if the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, identify the vehicle's bus interface input or hardwired interface input to obtain a second clutch signal; the second clutch signal indicates the clutch state corresponding to the mechanical transmission.

[0066] As a possible implementation manner, the first obtaining module includes: a first identification module configured to, if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, identify the ETC1 message, and if the identification is successful, obtain the first clutch signal; a second identification module configured to, if the identification fails, identify the ETC2 message to obtain the first clutch signal.

[0067] As a possible implementation manner, the first clutch signal includes a driveline state signal or a shift process state signal. The first identification module is specifically configured to: if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, identify the first bit and the second bit of the first byte in the ETC1 message, and if the identification is successful, obtain the driveline state signal; if the identification fails, identify the fifth bit and the sixth bit of the first byte in the ETC1 message, and if the identification is successful, obtain the shift process state signal.

[0068] In summary, in the device for identifying the clutch switch signal provided in the embodiment of the present application, after enabling the ETC1 message, the ETC2 message, and the ETC3 message, the type of the transmission in the vehicle is determined by the message received within the preset time, so as to identify the clutch switch signal corresponding to this type, and further the effect of identifying the clutch switch signals corresponding to multiple transmissions can be achieved. In this way, the ECU in the method provided in the embodiment of the present application can adapt to multiple transmissions and clutch switch signals, improving the adaptability of the ECU to different transmissions and reducing the workload of modifying the program when the ECU is assembled in different vehicles.

[0069] As can be seen from the description of the above embodiments, those skilled in the art can clearly understand that all or part of the steps in the above embodiment methods can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art can be embodied in the form of a software product. This computer software product can be stored in a storage medium such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network communication device such as a media gateway, etc.) to execute the methods described in various embodiments or certain parts of the embodiments of the present application.

[0070] It should be noted that the various embodiments in this specification are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the methods disclosed in the embodiments, since they correspond to the systems disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description of the system part.

[0071] It should also be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0072] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for identifying a clutch switch signal, characterized in that, The method is applied to a vehicle and includes: The electronic control unit (ECU) in the vehicle enables ETC1 message, ETC2 message, and ETC3 message; If the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the ETC1 message or the ETC2 message to obtain a first clutch signal; the first clutch signal indicates the clutch state corresponding to an electronically controlled mechanical automatic transmission or a hydraulic automatic transmission; If the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, it identifies the input of the vehicle's bus interface or hardwired interface to obtain a second clutch signal; the second clutch signal indicates the clutch state corresponding to a mechanical transmission; The step that if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the ETC1 message or the ETC2 message to obtain a first clutch signal includes: If the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the ETC1 message. If the identification is successful, it obtains the first clutch signal; If the identification fails, it identifies the ETC2 message to obtain the first clutch signal; The step that if the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, it identifies the input of the vehicle's bus interface or hardwired interface to obtain a second clutch signal includes: If the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, it identifies the input of the vehicle's hardwired interface. If the identification is successful, it obtains the second clutch information; If the identification fails, it identifies the input of the vehicle's bus interface to obtain the second clutch information.

2. The method according to claim 1, wherein The first clutch signal includes a driveline state signal or a shift process state signal. The step that if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the ETC1 message. If the identification is successful, it obtains the first clutch signal includes: If the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within a preset time, it identifies the first bit and the second bit of the first byte in the ETC1 message. If the identification is successful, it obtains the driveline state signal; If the identification fails, it identifies the fifth bit and the sixth bit of the first byte in the ETC1 message. If the identification is successful, it obtains the shift process state signal.

3. The method according to claim 2, wherein The first clutch signal further includes a current gear signal. The step that if the identification fails, it identifies the ETC2 message to obtain the first clutch signal includes: If the identification fails, it identifies the fourth byte in the ETC2 message. If the identification is successful, it obtains the current gear signal.

4. The method according to claim 3, characterized in that, The first clutch signal further includes a clutch disengagement percentage signal, and the method further includes: If the signal in the ETC2 message fails to be recognized, then the fourth byte in the ETC1 message is recognized. If the recognition is successful, the clutch disengagement percentage signal is obtained.

5. The method according to claim 1, wherein The method further includes: If the ECU does not receive the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, then a second clutch signal sent by the in-vehicle bus signal or hardwired signal is obtained; the second clutch signal indicates the clutch state corresponding to the mechanical transmission.

6. A device for identifying a clutch switch signal, characterized in that, The device is applied to an electronic control unit ECU in a vehicle and includes: An enabling module for enabling the ETC1 message, the ETC2 message, and the ETC3 message; A first obtaining module for, if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, recognizing the ETC1 message or the ETC2 message to obtain a first clutch signal; the first clutch signal indicates the clutch state corresponding to the electronically controlled mechanical automatic transmission or the hydraulic automatic transmission; A second obtaining module for, if the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, recognizing the input of the vehicle's bus interface or hardwired interface to obtain a second clutch signal; the second clutch signal indicates the clutch state corresponding to the mechanical transmission; The first obtaining module includes: A first recognition module for, if the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, recognizing the ETC1 message. If the recognition is successful, the first clutch signal is obtained; A second recognition module for, if the recognition fails, recognizing the ETC2 message to obtain the first clutch signal; The second obtaining module is specifically configured to: If the ECU does not receive any one of the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, recognize the input of the vehicle's hardwired interface. If the recognition is successful, the second clutch information is obtained; If the recognition fails, recognize the input of the vehicle's bus interface to obtain the second clutch information.

7. The device according to claim 6, characterized in that The first clutch signal includes a driveline status signal or a shift process status signal. The first recognition module is specifically configured to: If the ECU receives the ETC1 message, the ETC2 message, and the ETC3 message within the preset time, recognize the first and second bits of the first byte in the ETC1 message. If the recognition is successful, the driveline status signal is obtained; If the recognition fails, recognize the fifth and sixth bits of the first byte in the ETC1 message. If the recognition is successful, the shift process status signal is obtained.

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