Electronic gear shifting type configuration control method and automobile

Abstract

The invention discloses an electronic gear shifting vehicle type configuration control method and an automobile, and the method comprises the steps: writing a vehicle type configuration word into an electronic gear shifting mechanism main MCU (Microprogrammed Control Unit) through production electric detection equipment or a diagnostic instrument; loading corresponding software according to vehicle type configuration words pre-written in the electronic gear shifting main MCU so as to match corresponding vehicle type function requirements; wherein software corresponding to the vehicle type configuration word is pre-stored in the electronic gear shifting main MCU. The method has the advantages that by means of the method, one set of electronic gear shifting mechanism assembly can be configured with multiple vehicle types to meet different function configuration requirements, software with different configuration function requirements can be integrated in the electronic gear shifting control unit MCU, cost is low, and universality is high.

Description

Technical Field

[0001] The invention relates to the field of automobile chassis wire-controlled electronic shifting, and in particular to an electronic shifting vehicle model configuration control method and an automobile. Background Art

[0002] With the rapid development of modern automobiles, more and more intelligent electronic systems are configured in automobiles, and the wire-controlled electronic shift system has become one of the standard configurations of various host models. The wire-controlled shift system completely replaces the traditional mechanical shift mode through electronic control technology and no longer relies on the driver's physical operation. Its core working principle is to sense the shift command issued by the driver or the automatic driving system through sensors and convert the command into an electronic signal. This signal is transmitted to the electronic control unit (ECU), which analyzes it and issues specific shift operation instructions, and finally the actuator completes the gear switching operation.

[0003] The wire-controlled electronic shift system sends the shift position signal to the vehicle CAN network through the electronic shift main MCU. The related modules execute the shift action after receiving the wire-controlled electronic shift system signal. With the rapid development of the automobile industry, more and more functions are required. According to the existing technical solutions, it can only be developed according to a single vehicle model / configuration function. Different vehicle model functional requirements require different part numbers. This ultimately leads to a large variety of electronic shift part numbers, difficulty in error prevention, low platform and generalization levels, and high costs.

[0004] Moreover, every time a car model is developed, it is necessary to develop a corresponding variable configuration of the wire-controlled electronic shift system. This greatly complicates development, increases the time and cycle of car model development, repeats useless work, wastes time and effort, and affects efficiency. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for the electronic shift main MCU configuration vehicle model strategy problem. This method can perfectly solve the above-mentioned problems, realize the configuration of multiple vehicle models with one electronic shift mechanism assembly, reduce part numbers, improve universality and platformization, reduce the cost of each vehicle and error prevention cost, and also improve product quality.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a method for controlling the configuration of an electronic shift vehicle model, comprising writing the vehicle model configuration word into the main MCU of the electronic shift mechanism through a production electrical inspection device or a diagnostic instrument, and after the whole vehicle is powered on, loading the corresponding software according to the vehicle model configuration word pre-written in the electronic shift main MCU to match the corresponding vehicle model function requirements; wherein the software corresponding to the vehicle model configuration word is pre-stored in the electronic shift main MCU.

[0007] The electronic shift mechanism assembly main MCU pre-sets one-to-one corresponding vehicle model configuration words and configuration variables, and obtains the corresponding configuration variables for loading and operation based on the input configuration words.

[0008] After receiving the input configuration word, the electronic shift main MCU determines whether the vehicle meets the variable configuration conditions, and only allows the variable configuration step to be started after the variable configuration conditions are met.

[0009] Variable configuration conditions include:

[0010] 1) The vehicle is in the starting or power-on state;

[0011] 2) The vehicle is stationary or the speed V<0kph;

[0012] 3) Input configuration word is valid and remains unchanged for t2 seconds;

[0013] The variable configuration step is entered only when conditions 1), 2), and 3) are all met.

[0014] After entering the variable configuration step, parameter loading is performed, which includes:

[0015] Within the first t1 second after the electronic shift MCU is initialized, when the electronic shift main MCU detects that the configuration word input by the electric inspection device or diagnostic instrument is valid and remains unchanged for t2S, the electronic shift main MCU will load the corresponding vehicle model parameters according to the configuration word input by the electric inspection device or diagnostic instrument;

[0016] After t1 seconds, when the electronic shift main MCU detects that the configuration word input by the electric inspection device or diagnostic instrument is valid and remains unchanged for t2S, the electronic shift main MCU obtains the vehicle speed V, and when the vehicle speed V is less than 0kph, it loads the vehicle model parameters corresponding to the configuration word.

[0017] Before the electronic shift main MCU configuration word is written, the electronic shift main MCU comes with default basic software, where the default basic software is configured as follows: when the vehicle configuration update conditions are met, the electronic shift main MCU synchronously updates the electronic shift main MCU for configuration according to the configuration word input by the electric inspection equipment or diagnostic instrument.

[0018] The default configuration word is pre-set in the electronic shift main MCU. If the configuration word written by the production electrical inspection equipment or diagnostic instrument is not detected after the vehicle is powered on multiple times, the electronic shift main MCU reads the default configuration word and uses the default configuration word to obtain the corresponding configuration variables for loading and operation.

[0019] After the electronic shift main MCU uses the default configuration word to load and run the software, a reminder is issued through the on-board instrument, and the configuration word written by the production electrical inspection equipment or diagnostic instrument is detected in real time. When the configuration word is detected, the configuration variable is reloaded with the written configuration word and the variable configuration step is entered.

[0020] When the electronic shift main MCU adopts the default configuration word, the main MCU is connected to the vehicle power system through the CAN network and sends a control command to the vehicle power system to limit the vehicle power to match the default configuration word.

[0021] A car adopts the electronic shift vehicle model configuration control method to configure and control the electronic shift main MCU.

[0022] The advantages of the present invention are as follows: through this method, a set of electronic shift mechanism assemblies can be configured for multiple vehicle models to match different functional configuration requirements, which can be achieved by integrating software with different configuration functional requirements into the electronic shift control unit MCU. It does not require hardware improvements to achieve compatibility with multiple vehicles, reduce part numbers, improve commonality and platformization, reduce unit cost and error prevention cost, while also improving product quality and the level of commonality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The following is a brief description of the contents expressed in the drawings of the present invention and the symbols in the drawings:

[0024] Figure 1 A flow chart of the configuration control method of the present invention;

[0025] Figure 2 Flowchart of example gear shifting transmission variable configuration for the present invention. DETAILED DESCRIPTION

[0026] The specific implementation of the present invention will be further explained in detail below by describing the optimal embodiment with reference to the accompanying drawings.

[0027] This solution implements a method for the electronic shift main MCU configuration vehicle model strategy problem. This method can perfectly solve the above-mentioned problems, enable one electronic shift mechanism assembly to be configured with multiple vehicle models, reduce part numbers, improve commonality and platformization, reduce unit vehicle costs and error prevention costs, and also improve product quality.

[0028] As shown in the figure, an electronic shift vehicle model configuration control method of this embodiment includes writing the vehicle model configuration word into the electronic shift mechanism main MCU through the production electrical inspection equipment or diagnostic instrument. After the whole vehicle is powered on, the corresponding software is loaded according to the vehicle model configuration word pre-written in the electronic shift main MCU to match the corresponding vehicle model function requirements; wherein the software corresponding to the vehicle model configuration word is pre-stored in the electronic shift main MCU.

[0029] The normal operation of the vehicle requires the main MCU to load the corresponding software and run it. Therefore, during the vehicle production stage, it can be written into the main MCU through the production electrical inspection equipment or diagnostic instrument; after the vehicle is powered on, the pre-written vehicle configuration word is read from the memory through the address stored in the chip by the configuration word. The software identifies the current vehicle configuration through the configuration word, and then starts the pre-existing software that matches the configuration word, thereby achieving the purpose of shifting software switching control for different models. This can achieve one-time development and multiple uses, and only the corresponding configuration word needs to be written according to different models during the production stage. The operation is simple and the cost is low.

[0030] The main MCU of the electronic shift mechanism assembly pre-sets a one-to-one correspondence between the vehicle configuration word and the configuration variable, and obtains the corresponding configuration variable according to the input configuration word for loading and running. The configuration parameters can be completed through a one-to-one correspondence, which improves versatility.

[0031] In this embodiment, after receiving the input configuration word, the electronic shift main MCU determines whether the vehicle meets the variable configuration conditions. Only after the variable configuration conditions are met, the variable configuration step is allowed to be started. If the conditions are not met, the variable configuration step is not started.

[0032] Variable configuration conditions include:

[0033] 1) The vehicle is in the starting or power-on state;

[0034] 2) The vehicle is stationary or the speed V<0kph;

[0035] 3) Input configuration word is valid and remains unchanged for t2 seconds;

[0036] The variable configuration step is entered only when the above conditions 1), 2) and 3) are all met at the same time. The variable configuration step is entered to load the parameters and implement the configuration. The specific steps include:

[0037] After entering the variable configuration step, parameter loading is performed, where:

[0038] Within the first t1 second after the electronic shift MCU is initialized, when the electronic shift main MCU detects that the configuration word input by the electric inspection device or diagnostic instrument is valid and remains unchanged for t2S, the electronic shift main MCU will load the corresponding vehicle model parameters according to the configuration word input by the electric inspection device or diagnostic instrument;

[0039] After t1 seconds, when the electronic shift main MCU detects that the configuration word input by the electric inspection device or diagnostic instrument is valid and remains unchanged for t2S, the electronic shift main MCU obtains the vehicle speed V, and when the vehicle speed V is less than 0kph, it loads the vehicle model parameters corresponding to the configuration word.

[0040] The time t1 and t2 are both pre-calibrated time constants and can be pre-calibrated and set. The purpose of detecting whether there is a configuration word written within t1 s after initialization is because the main MCU will run after initialization, so the write operation needs to be performed at this time. The purpose of continuing t2s is to determine that the configuration word is valid, rather than other interference or misoperation, to improve the reliability of configuration word writing.

[0041] Before the electronic shift main MCU configuration word is written, the electronic shift main MCU comes with default basic software, where the default basic software is configured as follows: when the vehicle configuration update conditions are met, the electronic shift main MCU synchronously updates the electronic shift main MCU according to the configuration word input by the electric inspection equipment or diagnostic instrument to implement the configuration work of the main MCU.

[0042] The default configuration word is pre-set in the electronic shift main MCU. If the configuration word written by the production electric inspection equipment or diagnostic instrument is not detected after the vehicle is powered on for multiple times, the electronic shift main MCU reads the default configuration word at this time, and uses the default configuration word to obtain the corresponding configuration variable for loading and operation. Since the configuration word needs to be written in the vehicle production stage, if the configuration word is not written or the written configuration word is not successfully stored in the storage due to various reasons, the written configuration word cannot be detected after the vehicle is powered on. For example, the configuration word written generally has a fixed storage location, and the location will be read each time it is powered on. If the corresponding configuration word cannot be read after multiple power-ons, it means that it has not been written or the writing has not been successful. The default configuration word is used to replace it after the vehicle is powered on for multiple times to ensure that the configuration word has not been written or has not been successfully written. After reaching the threshold of the number of times after multiple power-ons, the default configuration word in the main MCU is read to configure the variable, that is, after multiple power-ons, when it is determined that the variable is configured with the default configuration word, first determine whether the variable configuration step is met, and then use the default configuration word to perform the variable configuration step to load the parameters after it is met.

[0043] In a preferred embodiment, since the default configuration word is used to configure the shifting software, this method may not be a perfect configuration. Although the vehicle can run, it is incorrect for the vehicle's performance, running stability, and the correctness of the shifting strategy. This method is only used as an emergency mode, which allows the vehicle to still run, but because it is not written successfully or for other reasons, it is judged that the vehicle is in an abnormal state at this time. In this state, a reminder needs to be issued and the power and speed of the vehicle need to be limited to avoid safety accidents. Specifically including:

[0044] After the electronic shift main MCU uses the default configuration word to load and run the software, a reminder is issued through the on-board instrument, and the configuration word written by the production electric inspection equipment or diagnostic instrument is detected in real time. When the configuration word is detected to be written, the configuration variable is reloaded with the written configuration word to enter the variable configuration step. When the reminder is issued, the configuration word belongs to the default, and real-time monitoring is performed to see if the configuration word is rewritten. When the configuration word is detected to be written, the variable software is loaded with the written configuration word as the highest priority. After reloading, first determine whether the variable configuration step is met. If it is met, the variable configuration step is performed with the written configuration word to load the parameters, thereby returning to normal state.

[0045] When the electronic shift main MCU uses the default configuration word, the main MCU is connected to the vehicle power system through the CAN network and sends control instructions to the vehicle power system to limit the vehicle power to match the default configuration word. Since the shift control software under the default configuration word is still incorrect, although it can meet the driving of the vehicle, it is incorrect in the shift strategy, which may cause shift jitter, shift safety accidents, etc., it is necessary to limit the power of the vehicle, and limit the power output by sending a limit instruction to the vehicle power system, thereby limiting the vehicle speed, avoiding shift safety accidents caused by excessive vehicle speed, and thus achieving the purpose of safety.

[0046] This embodiment also provides a car, which adopts the electronic shift vehicle configuration control method in the above embodiment to configure and control the electronic shift main MCU, thereby having all the characteristics and technical advantages in the above embodiment.

[0047] like Figure 2 As shown, the following will take the actual gearbox of some vehicle configurations as an example to illustrate a method for configuring variables of electronic shifting vehicle models, including writing the vehicle configuration word into the main MCU of the electronic shifting mechanism through the production electric inspection equipment or the diagnostic instrument. After the whole vehicle is powered on, different software is loaded according to the vehicle configuration pre-written in the main MCU of the electronic shifting mechanism to meet the functional requirements of different vehicle models.

[0048] The electronic shift mechanism assembly main MCU pre-sets one-to-one corresponding configuration words and configuration variables, and obtains the corresponding configuration variables according to the input configuration words for loading and running.

[0049] After receiving the input new configuration word, the electronic shift main MCU needs to meet the following conditions before entering the variable configuration step, the conditions include:

[0050] 1) Vehicle start or power-on status;

[0051] 2) Reference vehicle speed V<0kph;

[0052] 3) The input configuration word is valid and keeps t2s unchanged.

[0053] After the conditions are met, enter the variable configuration step to load parameters, including:

[0054] Within the first t1 second after the electronic shift MCU is initialized, when the electronic shift main MCU detects that the configuration word input by the electric inspection device or diagnostic instrument is valid and remains unchanged for t2S, the electronic shift main MCU will load the corresponding vehicle model parameters according to the configuration word input by the electric inspection device or diagnostic instrument;

[0055] After t1 seconds, when the electronic shift main MCU detects that the configuration word input by the electric inspection device or diagnostic instrument is valid and remains unchanged for t2S, the electronic shift main MCU obtains the vehicle speed V, and when the vehicle speed V is less than 0kph, it loads the vehicle model parameters corresponding to the configuration word. The time thresholds t1 and t2 can be calibrated and reasonably modified, such as time t1 is 3s.

[0056] Before the electronic shift main MCU configuration word is written, the electronic shift will use the default basic software in the main MCU. When the vehicle configuration update conditions are met, the electronic shift main MCU will be configured according to the configuration word input by the electric inspection equipment or diagnostic instrument.

[0057] The written configuration word can be written into the electronic shift main MCU through the host OEM offline device.

[0058] The advantages of this solution are: through this method, a set of electronic shift mechanism assemblies can be configured for multiple vehicle models to match different functional configuration requirements. This can be achieved by integrating software with different configuration function requirements into the electronic shift control unit MCU. It does not require hardware improvements to achieve compatibility with multiple vehicles, reduce part numbers, improve commonality and platformization, reduce unit costs and error prevention costs, while also improving product quality and the level of commonality.

[0059] The electronic shift system configuration variable method of the present invention writes the vehicle configuration word into the electronic shift main control MCU through the host OEM offline device, and the electronic shift main control MCU stores the configuration word into the EEPROM. The electronic shift main control MCU will load the corresponding vehicle model requirement software according to the input configuration word (as shown below) Figure 1 ). In the electronic shift master MCU software, the configuration word corresponds to the vehicle model parameters one by one. After receiving the configuration word, the electronic shift master MCU identifies the corresponding vehicle model configuration parameters according to the configuration word and then performs configuration.

[0060] The configuration variable definitions are executed according to the following table, as shown below:

[0061] 1.1 Gearbox type

[0062] The software identifies the configurations 1, 1, 2, etc. based on the "Gearbox Type" and "7DCT Type". And if the gearbox type is 4, the current configuration is considered to be 4. As shown below

[0063]

[0064]

[0065] 1.2. Model

[0066] When the software identifies the transmission type as 7DCT and the 7DCT type as Magna, if the vehicle type is configured as vehicle type 1, the current configuration is considered to be vehicle type. As shown below:

[0067]

[0068] 1.3 Power type

[0069] When the software identifies the power type as "5", it considers the current configuration to be hybrid. As shown below:

[0070]

[0071] Among them, the configuration word corresponds to different software versions, and different software versions correspond to loading the corresponding vehicle model software. The table shows the configuration software corresponding to three vehicle models.

[0072] 1. The default basic software of the electronic shift master MCU;

[0073] 2. The software version number of the electronic shift master MCU is unified;

[0074] 3. The data stream XX in the table can be set to any data, depending on the final frozen version.

[0075] 4. In table type 1: bits 21-23 are set to 101b, bits 185-189 are set to 010b, and XX represents any data that can be set

[0076] 5. In the table Model 2: bit21-bit23 are set to 101b; bit185-189 are set to 011b; bit64-65 are set to 0001b; XX represents that it can be set to any data

[0077] 6. In the table Transmission Type 1: bit21-bit23 are set to 100b; XX represents that it can be set to any data

[0078] like Figure 2As shown in the figure, it is a specific process for configuring according to the power type and the gearbox type respectively; the variable configuration word is used to identify whether the current power type is PHEV. If so, the current configuration is set to the shift software corresponding to the PHEV model. If not, it is once determined whether the gearbox type is 8AT or 7DCT, and then the corresponding model is determined according to the gearbox type and the shift software parameters under the corresponding mode are loaded, so as to achieve different configuration purposes.

[0079] Through the above method, this solution can achieve a set of electronic shift mechanism assembly configuration for multiple vehicle models to match different functional configuration requirements. This can be achieved by integrating software with different configuration function requirements into the electronic shift control unit MCU. It does not require hardware improvements to achieve compatibility with multiple vehicles, reduce part numbers, improve commonality and platformization, reduce unit cost and error prevention cost, while also improving product quality and the level of commonality.

[0080] Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A configuration control method for an electronic shift vehicle, characterized in that: This includes writing the vehicle configuration word into the main MCU of the electronic shift mechanism through the production electrical inspection equipment or diagnostic instrument. After the vehicle is powered on, the corresponding software is loaded according to the vehicle configuration word pre-written in the main MCU of the electronic shift mechanism to match the corresponding vehicle function requirements; The software corresponding to the vehicle configuration word is pre-stored in the electronic shift main MCU.

2. The electronic shift vehicle configuration control method according to claim 1, characterized in that: The electronic shift mechanism assembly main MCU pre-sets one-to-one corresponding vehicle model configuration words and configuration variables, and obtains the corresponding configuration variables for loading and operation based on the input configuration words.

3. The electronic shift vehicle configuration control method according to claim 1, characterized in that: After receiving the input configuration word, the electronic shift main MCU determines whether the vehicle meets the variable configuration conditions, and only allows the variable configuration step to be started after the variable configuration conditions are met.

4. The electronic shift vehicle configuration control method according to claim 3, characterized in that: Variable configuration conditions include: 1) The vehicle is in the starting or power-on state; 2) The vehicle is stationary or the speed V<0kph; 3) Input configuration word is valid and remains unchanged for t2 seconds; The variable configuration step is entered only when conditions 1), 2), and 3) are all met.

5. The electronic shift vehicle configuration control method according to claim 3 or 4, characterized in that: After entering the variable configuration step, parameter loading is performed, which includes: Within the first t1 second after the electronic shift MCU is initialized, when the electronic shift main MCU detects that the configuration word input by the electric inspection device or diagnostic instrument is valid and remains unchanged for t2S, the electronic shift main MCU will load the corresponding vehicle model parameters according to the configuration word input by the electric inspection device or diagnostic instrument; After t1 seconds, when the electronic shift main MCU detects that the configuration word input by the electric inspection device or diagnostic instrument is valid and remains unchanged for t2S, the electronic shift main MCU obtains the vehicle speed V, and when the vehicle speed V is less than 0kph, it loads the vehicle model parameters corresponding to the configuration word.

6. A method for controlling the configuration of an electronic shift vehicle according to any one of claims 1 to 4, characterized in that: Before the electronic shift main MCU configuration word is written, the electronic shift main MCU comes with default basic software, where the default basic software is configured as follows: when the vehicle configuration update conditions are met, the electronic shift main MCU synchronously updates the electronic shift main MCU for configuration according to the configuration word input by the electric inspection equipment or diagnostic instrument.

7. An electronic shift vehicle configuration control method according to any one of claims 1 to 4, characterized in that: The default configuration word is pre-set in the electronic shift main MCU. If the configuration word written by the production electrical inspection equipment or diagnostic instrument is not detected after the vehicle is powered on multiple times, the electronic shift main MCU reads the default configuration word and uses the default configuration word to obtain the corresponding configuration variables for loading and operation.

8. The electronic shift vehicle configuration control method according to claim 7, characterized in that: After the electronic shift main MCU uses the default configuration word to load and run the software, a reminder is issued through the on-board instrument, and the configuration word written by the production electrical inspection equipment or diagnostic instrument is detected in real time. When the configuration word is detected, the configuration variable is reloaded with the written configuration word and the variable configuration step is entered.

9. The electronic shift vehicle configuration control method according to claim 7 or 8, characterized in that: When the electronic shift main MCU adopts the default configuration word, the main MCU is connected to the vehicle power system through the CAN network and sends a control command to the vehicle power system to limit the vehicle power to match the default configuration word.

10. An automobile, characterized in that: The automobile adopts the electronic shift vehicle configuration control method as described in any one of claims 1-9 to configure and control the electronic shift main MCU.

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