Redundant gear shifting system and method for automatic stopping vehicle

Abstract

In order to solve the problem that a vehicle cannot shift gears due to the invalidation of a gear shifter, the invention provides a redundant gear shifting system and method for an automatic car stopper, and the system comprises a gear shifter module which is used for switching gears and sending a gear shifting request to a transmission module; the transmission module is used for executing gear switching, feeding back the gear state to the gear shifter module and the instrument prompt module, collecting the state of the gear shifter module and feeding back the state to the redundant gear shifting module; the redundant gear shifting module is used for judging whether redundant gear shifting is activated or not according to the state of the gear shifter module; the vehicle body controller is used for receiving the multifunctional steering wheel operation signal, converting the signal and then sending the signal to the redundant gear shifting module; the multifunctional steering wheel is used for converting key operation of a driver into a signal and sending the signal to the vehicle body controller; and the instrument prompting module is used for prompting the state of the gear shifter module, the gear state and the like, when the gear shifter module is in the failure state, the transmission can execute gear shifting through a redundant gear shifting strategy, and the safety in the driving process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to a redundant shifting system and method for an automatic transmission vehicle. Background Art

[0002] As vehicles are increasingly used, the proportion of automatic transmission models among them is gradually increasing. Since the shifters in automatic transmission models all use electronic shifters, unexpected failures may occur in some cases, resulting in the vehicle being unable to shift gears.

[0003] In the prior art, there is a transmission shift control method, device and automobile with publication number CN114135663A. The invention sets a redundant control circuit. When the CAN bus communication between the selector shift controller and the transmission controller fails, the transmission controller loses the bus shift signal, and another PWM shift signal will be used as a redundant shift signal to generate a shift operation instruction, which can continue to respond to the driver's driving intention, avoid the vehicle from stopping due to failure to shift, and ensure that the vehicle can drive safely. However, in this technical solution, both signal circuits realize the shift signal output through the selector shift controller. When the shift controller fails, the shift operation cannot be realized. Summary of the invention

[0004] In order to solve the problem that the vehicle cannot shift gears due to the failure of the shifter, the present invention provides a redundant shifting system and method for an automatic transmission vehicle, and the technical solution adopted is as follows: A redundant shifting system for an automatic transmission vehicle, characterized by comprising: The shifter module is connected to the transmission module by signal and is used to send the shift request and its own status to the transmission module; The transmission module is used to receive the shift request from the shifter module or the redundant shifter module, perform the shift operation according to the preset shift logic, feedback the gear status to the shifter module, the redundant shifter module and the instrument prompt module, and is responsible for receiving the status of the shifter module and then feedback it to the redundant shifter module; A redundant shift module, including a redundant shift controller, connected to the transmission module signal, for receiving the gear position status and the shifter module status sent by the transmission module; A body controller is connected to the multi-function steering wheel and the redundant shift module signal, and is used to receive and convert the multi-function steering wheel operation signal and send it to the redundant shift module; A multifunctional steering wheel module, comprising a steering wheel and a steering wheel controller, wherein the steering wheel is provided with a shift operation button, and the steering wheel controller is used to send a shift signal to the vehicle body controller; The instrument prompt module is connected to the transmission module signal to display the gear status; The transmission module determines whether to receive a shift request from a redundant shift module or a shifter module based on the state of the shifter module, and determines whether to execute a shift based on the shift conditions. When executing a redundant shift, the redundant shift controller receives the signal after the body controller converts the multi-function steering wheel and sends it to the transmission module.

[0005] Furthermore, the gear shifting conditions include stepping on the brake pedal, pressing the steering wheel gear shifting operation button, and the vehicle speed being less than a preset value.

[0006] Furthermore, the redundant shift controller is an instrument panel controller.

[0007] A redundant shifting method for an automatic transmission vehicle, characterized by comprising the following steps: S1, the transmission module receives the status information of the shifter module and enters S2; S2. According to the status information of the shifter module, the transmission module determines whether the shifter module is in a faulty state. If so, the process proceeds to S3; otherwise, the process proceeds to S5. S3: The shifter module fails, the transmission module stops executing the shifter module shift instruction, and the redundant shift module determines that the redundant shift is valid according to the shifter module failure state signal fed back by the transmission module, and enters step S4; S4, the driver operates the multi-function steering wheel to perform a gear shift operation, and the process proceeds to step S6; S5: When the shifter module is in a normal state, the transmission module normally receives and executes the shifting instruction of the shifter module, and the driver operates the shifting operation, and enters S6; S6. The transmission module determines to receive a shift request from a redundant shift module or a shifter module according to the state of the shifter module, and performs a shift operation according to a preset shift logic.

[0008] Furthermore, in step S6, the transmission module receives the shift request from the redundant shift module, and the operation steps are as follows: S61, the transmission module confirms receipt of the redundant shift request and proceeds to S62, otherwise, returns to S61; S62, the transmission module determines whether the redundant shifting condition is met, the redundant shifting condition includes stepping on the brake pedal, pressing the steering wheel confirmation key, and the vehicle speed is less than a preset value. If the shifting condition is met, enter S64, otherwise enter S63; S63: The transmission module determines that the redundant shifting condition is not met, and sends the reason for the shifting failure to the instrument prompt module, which notifies the driver through a text prompt; S64: The transmission module performs a gear shifting operation.

[0009] The beneficial effects of the present invention are: 1. By adding a redundant shift module to receive shift instructions and send shift requests to the transmission module, the redundant shift strategy can be used to execute shifts when the shifter module fails, thus improving driving safety. 2. By setting up an instrument display module to receive the shift information fed back by the transmission module, the shift status and the reason for the shift failure can be notified to the driver in real time through text messages. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the redundant shifting system structure for automatic transmission vehicles Figure 2 Flowchart of redundant shifting method for automatic transmission vehicles Figure 3 Redundant shifting flow chart Among them, 1-shifter module, 2-transmission module, 3-redundant shift module, 4-body controller, 5-multi-function steering wheel, 6-instrument prompt module. DETAILED DESCRIPTION

[0011] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0012] like Figure 1 The redundant shifting system of an automatic transmission vehicle shown includes a shifter module 1 , a transmission module 2 , a redundant shifting module 3 , a body controller 4 , a multi-function steering wheel 5 and an instrument prompt module 6 .

[0013] Specific: The shifter module 1 , by pushing the shift lever, the shift controller of the shifter module 1 can send the driver's shift request and its own status to the transmission module 2 .

[0014] The transmission module 2, the transmission controller in the transmission module 2 can receive the shift request from the shifter module 1 or the redundant shift module 3, and perform the shift operation according to the corresponding shift logic and shift conditions, and feedback the gear status to the shifter module 1, the redundant shift module 3 and the instrument prompt module 6. Moreover, the transmission module 2 is responsible for receiving the status of the shifter module 2 and feeding it back to the redundant shift module 3.

[0015] Redundant shift module 3 , in this embodiment, the redundant shift module 3 adopts an instrument panel controller, which is signal-connected to the transmission module 2 and the body controller 4 , and is used to receive the gear status and shifter status sent by the transmission module 2 .

[0016] The body controller 4 is used to receive the operation signal of the multi-function steering wheel and convert the signal into a LIN signal and send it to the redundant shift module 3.

[0017] The multifunctional steering wheel 5 comprises a steering wheel and a steering wheel controller. The steering wheel is provided with shift operation buttons. The steering wheel controller converts the shift button operation of the driver into a CAN signal and sends it to the body controller 4 .

[0018] The instrument prompt module 6 mainly includes a display screen, which is connected to the transmission module 2 by signal and is used to display the gear status information transmitted by the transmission module 2.

[0019] A first communication channel is formed between the shifter module 1 and the transmission module 2, and a second communication channel is formed by the multi-function steering wheel 5, the body controller 4, the redundant shift unit 3 and the transmission module 2. The transmission module 2 determines whether the shifter module 1 is in a faulty state to receive the shift request from the shifter module 1 or the redundant shift module 3, and determines whether to execute the shift request according to the shift condition, and sends the shift information to the instrument prompt module 6, and the instrument prompt module 6 outputs a text prompt according to the shift information.

[0020] A redundant shifting method for an automatic transmission vehicle, such as Figure 2 As shown, the following steps are included: S1, transmission module 2 receives status information of shifter module 1 and enters S2; S2. According to the received status information of the shifter module 1, the transmission module 2 determines whether the shifter module 1 is in a fault state. If so, it proceeds to S3; otherwise, it proceeds to S5; S3, the shifter module 1 fails, the transmission module 1 stops executing the shifter module shift command, and the redundant shift module 3 confirms that the redundant shift is valid according to the shifter module 1 fault status signal fed back by the transmission module 2, and enters step S4; S4, the driver operates the multi-function steering wheel 5 to perform a gear shift operation, and the process proceeds to step S6; S5, when the shifter module 1 is in a normal state, the transmission module 2 normally receives and executes the shifting instruction of the shifter module 1, and the driver operates the shifting operation, and enters S6; S6. The transmission module 2 determines to receive the shift request of the redundant shift module 3 or the shift module 1 according to the state of the shifter module 1, and performs the shift operation according to the preset shift logic.

[0021] In step S6, when the transmission module 2 selects to receive the shift request of the redundant shift module 3, that is, the shift module 1 is in a fault state at this time, such as Figure 3 The specific steps are as follows: S61, the transmission module 2 confirms receipt of the redundant shift request, enters S62, otherwise, returns to S61; S62, the transmission module 2 determines whether the redundant shifting condition is met, the redundant shifting condition includes stepping on the brake pedal, pressing the steering wheel confirmation key, and the vehicle speed is less than 3km / s. If the shifting condition is met, enter S64, otherwise enter S63; S63: The transmission module 2 determines that the redundant shifting condition is not met, and sends the reason for the shifting failure to the instrument prompt module 6, which notifies the driver through a text prompt; S64: The transmission module performs a gear shifting operation.

[0022] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention. These improvements should also be regarded as the protection scope of the present invention.

Claims

1. A redundant shifting system for an automatic transmission vehicle, characterized in that: include: The shifter module is connected to the transmission module by signal and is used to send the shift request and its own status to the transmission module; The transmission module is used to receive the shift request from the shifter module or the redundant shifter module, perform the shift operation according to the preset shift logic, feedback the gear status to the shifter module, the redundant shifter module and the instrument prompt module, and is responsible for receiving the status of the shifter module and then feedback it to the redundant shifter module; A redundant shift module, including a redundant shift controller, connected to the transmission module signal, for receiving the gear position status and the shifter module status sent by the transmission module; A body controller is connected to the multi-function steering wheel and the redundant shift module signal, and is used to receive and convert the multi-function steering wheel operation signal and send it to the redundant shift module; A multifunctional steering wheel module, comprising a steering wheel and a steering wheel controller, wherein the steering wheel is provided with a shift operation button, and the steering wheel controller is used to send a shift signal to the vehicle body controller; The instrument prompt module is connected to the transmission module signal to display the gear status; The transmission module determines whether to receive a shift request from a redundant shift module or a shifter module based on the state of the shifter module, and determines whether to execute a shift based on the shift conditions. When executing a redundant shift, the redundant shift controller receives the signal after the body controller converts the multi-function steering wheel and sends it to the transmission module.

2. The redundant shifting system for an automatic vehicle according to claim 1, characterized in that: The gear shifting conditions include stepping on the brake pedal, pressing the steering wheel gear shifting operation button, and the vehicle speed being less than a preset value.

3. The redundant shifting system and method for an automatic vehicle according to claim 1, characterized in that: The redundant shift controller is a dashboard controller.

4. The method for redundant shifting of an automatic vehicle based on the redundant shifting system of an automatic vehicle according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1, the transmission module receives the status information of the shifter module and enters S2; S2. According to the status information of the shifter module, the transmission module determines whether the shifter module is in a faulty state. If so, the process proceeds to S3; otherwise, the process proceeds to S5. S3: The shifter module fails, the transmission module stops executing the shifter module shift instruction, and the redundant shift module determines that the redundant shift is valid according to the shifter module failure state signal fed back by the transmission module, and enters step S4; S4, the driver operates the multi-function steering wheel to perform a gear shift operation, and the process proceeds to step S6; S5: When the shifter module is in a normal state, the transmission module normally receives and executes the shifting instruction of the shifter module, and the driver operates the shifting operation, and enters S6; S6. The transmission module determines to receive a shift request from a redundant shift module or a shifter module according to the state of the shifter module, and performs a shift operation according to a preset shift logic.

5. The redundant shifting system and method for an automatic vehicle according to claim 4, characterized in that: In step S6, the transmission module receives the shift request from the redundant shift module, and the operation steps are as follows: S61, the transmission module confirms receipt of the redundant shift request and proceeds to S62, otherwise, returns to S61; S62, the transmission module determines whether the redundant shifting condition is met, the redundant shifting condition includes stepping on the brake pedal, pressing the steering wheel confirmation key, and the vehicle speed is less than a preset value. If the shifting condition is met, enter S64, otherwise enter S63; S63: The transmission module determines that the redundant shifting condition is not met, and sends the reason for the shifting failure to the instrument prompt module, which notifies the driver through a text prompt; S64: The transmission module performs a gear shifting operation.

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