CN117847204A - Vehicle shift control method, device, equipment and storage medium - Google Patents

Abstract

The present invention discloses a vehicle shift control method, device, equipment and storage medium, including: obtaining the current gear position and vehicle weight of a target vehicle in real time, and determining the vehicle start gear position according to the vehicle weight when the current gear position is neutral; controlling the target vehicle to travel in the vehicle start gear position; obtaining the driving data of the target vehicle in real time, and when the vehicle weight is greater than or equal to the vehicle overload threshold, performing shift control on the target vehicle according to the driving data and a preset shift reference table, so that the target vehicle travels according to the target gear position after the shift; wherein the driving data includes vehicle speed, slope and throttle opening; the preset shift reference table includes the mapping relationship between each driving data threshold of the target vehicle and the shift operation. The technical solution of the present invention improves the accuracy and reliability of vehicle shift control.

Description

Vehicle shift control method, device, equipment and storage medium

Technical Field

The present invention relates to the field of vehicle technology, and in particular to a vehicle gear shift control method, device, equipment and storage medium.

Background technique

At present, in order to meet the needs of high speed and large climbing, it is necessary to configure multi-speed transmissions for new energy heavy trucks and mining trucks. Traditional transmissions for heavy trucks or mining trucks include automatic transmissions (AT) and automatic mechanical transmissions (AMT). Compared with AT transmissions, AMT transmissions are cheaper, so new energy mining trucks and heavy trucks are currently equipped with AMT automatic transmissions.

The existing AMT shift control modes include automatic mode and manual mode. Specifically, the automatic mode shifts gears with a single parameter of motor speed or a dual parameter associated with the motor and the throttle. The manual mode shifts gears with the driver's shift handle as input.

However, since the existing automatic mode does not take into account the impact of road slope on gear selection, shifting gears using the existing automatic mode will result in inaccurate gear shifting results. Secondly, since the operating conditions of heavy trucks or mining trucks are mostly heavy-loaded uphill or heavy-loaded downhill, and there is a risk of the vehicle not shifting into gear, causing the vehicle to slip backward or forward out of control, manual mode is used during heavy-load operation. Shifting gears using manual mode requires too much reliance on the driver, resulting in inaccurate and unreliable gear shifting results.

Summary of the invention

The present invention provides a vehicle shift control method, device, equipment and storage medium, which improve the accuracy and reliability of vehicle shift control.

In a first aspect, an embodiment of the present invention provides a vehicle shift control method, comprising: acquiring a current gear position and a total vehicle weight of a target vehicle in real time, and determining a vehicle starting gear position according to the total vehicle weight when the current gear position is neutral; controlling the target vehicle to travel in the vehicle starting gear position; acquiring driving data of the target vehicle in real time, and performing a gear shift control on the target vehicle according to the driving data and a preset gear shift reference table when the total vehicle weight is greater than or equal to a vehicle overload threshold, so that the target vehicle travels according to the target gear position after the gear shift; wherein the driving data comprises vehicle speed, slope and throttle opening; and the preset gear shift reference table comprises a mapping relationship between each driving data threshold of the target vehicle and the gear shift operation.

Optionally, the target vehicle is controlled to shift gears according to driving data and a preset gear shift reference table, including: according to the preset gear shift reference table, respectively obtaining an upshift speed threshold, an upshift slope threshold and an upshift throttle threshold corresponding to the vehicle speed, slope and throttle opening; if the vehicle speed is greater than the upshift speed threshold, and the slope is less than the upshift slope threshold, and the throttle opening is less than the upshift throttle threshold, the target vehicle is controlled to shift up.

Optionally, the target vehicle is controlled to shift gears according to driving data and a preset gear shift reference table, including: according to the preset gear shift reference table, respectively obtaining a downshift vehicle speed threshold, a downshift slope threshold and a downshift throttle threshold corresponding to the vehicle speed, slope and throttle opening; if the vehicle speed is less than the downshift vehicle speed threshold and the throttle opening is greater than the downshift throttle threshold, the target vehicle is controlled to downshift; or if the slope is greater than the downshift slope threshold and the throttle opening is greater than the downshift throttle threshold, the target vehicle is controlled to downshift.

Optionally, the vehicle starting gear position is determined according to the vehicle weight, including: if the vehicle weight is equal to a preset empty vehicle weight, then the preset empty vehicle driving gear position is used as the vehicle starting gear position.

Optionally, the vehicle starting gear position is determined according to the weight of the entire vehicle, including: if the weight of the entire vehicle is not equal to the preset empty vehicle weight, obtaining the drive configuration parameters of the target vehicle, and determining the vehicle output force in the empty vehicle state according to the drive configuration parameters and the preset empty vehicle weight; determining the vehicle starting gear position according to the vehicle output force, the preset empty vehicle weight and the weight of the entire vehicle.

Optionally, the vehicle starting gear is determined based on the vehicle output force, a preset empty vehicle weight and the vehicle weight, including: determining the empty vehicle gear ratio based on the vehicle output force and the preset empty vehicle weight; determining the vehicle starting gear based on the empty vehicle gear ratio and the vehicle weight.

Optionally, controlling the target vehicle to travel in a vehicle starting gear includes: controlling the transmission to switch from a forward gear to a vehicle starting gear through a vehicle controller, so that the target vehicle travels according to the vehicle starting gear.

In a second aspect, an embodiment of the present invention further provides a vehicle shift control device, comprising: a starting gear determination module, used to obtain the current gear and vehicle weight of the target vehicle in real time, and when the current gear is neutral, determine the vehicle starting gear according to the vehicle weight; a vehicle driving module, used to control the target vehicle to drive in the vehicle starting gear; a shift control module, used to obtain the driving data of the target vehicle in real time, and when the vehicle weight is greater than or equal to the vehicle overload threshold, perform shift control on the target vehicle according to the driving data and a preset gear calibration table, so that the target vehicle drives according to the target gear after the shift; wherein the driving data includes vehicle speed, slope and throttle opening; the preset shift reference table includes the mapping relationship between each driving data threshold of the target vehicle and the shift operation.

In a third aspect, an embodiment of the present invention further provides a vehicle, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the vehicle shift control method provided by any embodiment of the present invention.

In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, which stores computer instructions, and the computer instructions are used to enable a processor to implement the vehicle shift control method provided by any embodiment of the present invention when executed.

The technical solution provided by the embodiment of the present invention obtains the current gear position and the weight of the whole vehicle of the target vehicle in real time, and determines the vehicle starting gear position according to the weight of the whole vehicle when the current gear position is neutral; controls the target vehicle to travel in the vehicle starting gear; obtains the driving data of the target vehicle in real time, and when the weight of the whole vehicle is greater than or equal to the vehicle overload threshold, controls the target vehicle to shift gears according to the driving data and a preset gear shift reference table, so that the target vehicle travels according to the target gear position after the gear shift; wherein the driving data includes vehicle speed, slope and throttle opening; the preset gear shift reference table includes the mapping relationship between each driving data threshold of the target vehicle and the gear shift operation, thereby improving the accuracy and reliability of the vehicle gear shift control.

It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a flow chart of a vehicle shift control method provided according to a first embodiment of the present invention;

FIG2 is a flow chart of another vehicle shift control method provided in Embodiment 2 of the present invention;

3 is a flow chart of another vehicle shift control method provided in Embodiment 3 of the present invention;

FIG4 is a flow chart of a preferred vehicle shift control method provided according to an embodiment of the present invention;

5 is a schematic structural diagram of a vehicle shift control device provided according to a fourth embodiment of the present invention;

FIG6 is a schematic diagram of the structure of a vehicle provided in accordance with the fifth embodiment of the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

Embodiment 1

Figure 1 is a flow chart of a vehicle shift control method provided according to an embodiment of the present invention. This embodiment is applicable to the case of performing shift control on a vehicle. The method can be executed by a vehicle shift control device. The vehicle shift control device can be implemented in the form of hardware and/or software. The vehicle shift control device can be configured in a vehicle.

As shown in FIG1 , a vehicle shift control method disclosed in this embodiment includes:

S110, obtaining the current gear position and vehicle weight of the target vehicle in real time, and determining the vehicle starting gear position according to the vehicle weight when the current gear position is neutral.

In this embodiment, the target vehicle may be a vehicle equipped with an on-board weighing system. The vehicle weight may be the sum of the net weight of the target vehicle and its loaded weight.

In a specific implementation, the current gear position of the target vehicle can be obtained through a gear position sensor, and the vehicle weight can be obtained through a vehicle-mounted weighing system. Then, it can be determined whether the current gear position is neutral. If so, the vehicle starting gear position can be determined based on the vehicle weight and vehicle type. Specifically, if the vehicle weight is the same and the vehicle type is different, the vehicle starting gear position is different.

For example, if the target vehicle is stopped for loading and the current gear of the target vehicle is neutral, the vehicle weight can be collected in real time through the on-board weighing system and sent to the vehicle controller. Then, the vehicle starting gear after the vehicle loading is completed can be determined by the vehicle controller based on the vehicle weight.

The advantage of this setting is that the vehicle starting gear is determined by the weight of the entire vehicle, and the driver does not need to manually select the vehicle starting gear. This avoids the problem of the vehicle being unable to start due to selecting a gear that is too high, or the vehicle speed being too low due to selecting a gear that is too low, thereby ensuring a smooth start of the vehicle.

S120: Control the target vehicle to travel in a vehicle start gear position.

In this step, specifically, when the current gear is shifted from neutral to forward gear, the vehicle start gear can be sent to the automatic transmission control unit (TCU) through the vehicle controller. Then, the target vehicle can be controlled by the TCU to drive in the vehicle start gear.

S130, obtaining driving data of the target vehicle in real time, and when the vehicle weight is greater than or equal to the vehicle overload threshold, performing gear shifting control on the target vehicle according to the driving data and a preset gear shifting reference table, so that the target vehicle travels according to the target gear position after the gear shifting.

In this embodiment, the driving data may include at least one of vehicle speed, slope, and throttle opening. The preset shift reference table may include a mapping relationship between each driving data threshold of the target vehicle and the shift operation. In practical applications, the driving data threshold corresponding to each gear of the target vehicle can be obtained through the preset shift reference table. Optionally, the driving data threshold can be determined according to preset user requirements or historical driving data of the target vehicle.

In this step, specifically, the vehicle speed can be collected through the vehicle speed sensor, the slope of the road surface on which the target vehicle is traveling can be collected through the gyroscope, and the throttle opening can be collected through the accelerator pedal sensor. Among them, the gyroscope is configured in the vehicle controller. Then, it can be determined whether the weight of the vehicle is greater than or equal to the vehicle overload threshold. If so, the driving data threshold corresponding to the driving data can be obtained from the preset gear shift reference table. Finally, the driving data and the driving data threshold can be compared, and the gear shift control of the target vehicle can be performed according to the comparison result.

The advantage of such a setting is that, compared with the prior art that uses the shift handle as input for shifting, the technical solution of this embodiment performs automatic shifting control according to driving data and a preset shifting reference table, thereby avoiding the problem that the vehicle cannot be accelerated and started due to inappropriate gear selection by the driver, and improving the accuracy and reliability of vehicle shifting. Secondly, compared with the prior art that performs shifting according to a single parameter of motor speed or dual parameters associated with the motor and the throttle, the technical solution of this embodiment takes into account the influence of road slope on gear selection, thereby improving the accuracy of the shifting result.

The technical solution of the present embodiment obtains the current gear position and vehicle weight of the target vehicle in real time, and determines the vehicle starting gear position according to the vehicle weight when the current gear position is neutral; controls the target vehicle to travel in the vehicle starting gear position; obtains the driving data of the target vehicle in real time, and controls the target vehicle to shift gears according to the driving data and a preset gear shift reference table when the vehicle weight is greater than or equal to the vehicle overload threshold, so that the target vehicle travels according to the target gear position after the gear shift. This technical solution solves the problem that shifting gears in manual mode requires excessive reliance on the driver, resulting in inaccurate and unreliable gear shifting results, and improves the accuracy and reliability of vehicle gear shifting control.

Embodiment 2

FIG2 is a flow chart of another vehicle shift control method provided according to Embodiment 2 of the present invention. This embodiment is a further optimization and expansion based on the above embodiments, and can be combined with various optional technical solutions in the above embodiments.

As shown in FIG2 , another vehicle shift control method disclosed in this embodiment includes:

S210, obtaining the current gear position and vehicle weight of the target vehicle in real time, and determining the vehicle starting gear position according to the vehicle weight when the current gear position is neutral.

S220: Control the target vehicle to travel in a vehicle start gear position, and obtain the travel data of the target vehicle in real time.

Among them, driving data may include vehicle speed, slope, throttle opening, etc.

S230. According to a preset shift reference table, respectively obtain an upshift vehicle speed threshold, an upshift slope threshold, and an upshift throttle threshold corresponding to the vehicle speed, slope, and throttle opening.

In this embodiment, the upshift vehicle speed threshold, the upshift slope threshold, and the upshift throttle threshold can be used to determine whether the target vehicle meets the upshift condition.

In this step, specifically, when the target vehicle is heavily loaded going uphill or downhill (that is, when the vehicle weight is greater than or equal to the vehicle heavy load threshold), the upshift vehicle speed threshold, upshift slope threshold and upshift throttle threshold can be obtained according to a preset shift reference table.

S240: If the vehicle speed is greater than the upshift vehicle speed threshold, the slope is less than the upshift slope threshold, and the throttle opening is less than the upshift throttle threshold, upshift control is performed on the target vehicle.

The advantage of such a setting is that by automatically upshifting the target vehicle when the vehicle speed is greater than the upshift speed threshold, the slope is less than the upshift slope threshold, and the throttle opening is less than the upshift throttle threshold, it can ensure that the target vehicle runs at a higher speed on a road with a smaller slope or a flat road, thereby increasing the vehicle's driving speed and saving the vehicle's driving cost.

S250. According to a preset shift reference table, respectively obtain a downshift vehicle speed threshold, a downshift slope threshold, and a downshift throttle threshold corresponding to the vehicle speed, slope, and throttle opening.

In this embodiment, the downshift vehicle speed threshold, the downshift slope threshold, and the downshift throttle threshold can be used to determine whether the target vehicle meets the downshift condition.

In this step, specifically, when the target vehicle is heavily loaded going uphill or downhill (that is, when the vehicle weight is greater than or equal to the vehicle heavy load threshold), the downshift speed threshold, downshift slope threshold and downshift throttle threshold can be obtained according to a preset shift reference table.

S260: If the vehicle speed is less than the downshift speed threshold and the throttle opening is greater than the downshift throttle threshold, downshift control is performed on the target vehicle; or if the slope is greater than the downshift slope threshold and the throttle opening is greater than the downshift throttle threshold, downshift control is performed on the target vehicle.

In this step, specifically, when the throttle opening is greater than the downshift throttle threshold, if the vehicle speed is less than the downshift speed threshold or the slope is greater than the downshift slope threshold, it can be considered that the target vehicle's climbing ability is insufficient in the current gear, and the target vehicle can be automatically downshifted at this time.

The advantage of this setting is that by automatically downshifting when the vehicle speed is less than the downshift speed threshold and the throttle opening is greater than the downshift throttle threshold, or the slope is greater than the downshift slope threshold and the throttle opening is greater than the downshift throttle threshold, it is ensured that the target vehicle still has sufficient climbing ability to travel when the slope becomes larger.

S270: Control the target vehicle to travel according to the target gear position after the gear shift.

The technical solution of this embodiment is to obtain the current gear position and vehicle weight of the target vehicle in real time, and determine the vehicle starting gear position according to the vehicle weight when the current gear position is neutral; control the target vehicle to travel in the vehicle starting gear position, and obtain the driving data of the target vehicle in real time; obtain the upshift vehicle speed threshold, upshift slope threshold and upshift throttle threshold corresponding to the vehicle speed, slope and throttle opening respectively according to the preset gear shift reference table; if the vehicle speed is greater than the upshift vehicle speed threshold, and the slope is less than the upshift slope threshold, and the throttle opening is less than the upshift throttle threshold, the target vehicle is controlled to upshift; obtain the upshift vehicle speed threshold, upshift slope threshold and upshift throttle threshold respectively according to the preset gear shift reference table A downshift vehicle speed threshold, a downshift slope threshold and a downshift throttle threshold corresponding to the vehicle speed, the slope and the throttle opening are obtained; if the vehicle speed is less than the downshift vehicle speed threshold and the throttle opening is greater than the downshift throttle threshold, the target vehicle is controlled to be downshifted; or if the slope is greater than the downshift slope threshold and the throttle opening is greater than the downshift throttle threshold, the target vehicle is controlled to be downshifted; a technical means of controlling the target vehicle to travel according to the target gear after the gear shift solves the problem that shifting in manual mode requires too much reliance on the driver, resulting in inaccurate and unreliable gear shifting results, thereby improving the accuracy and reliability of vehicle gear shifting control.

Embodiment 3

FIG3 is a flow chart of another vehicle shift control method provided according to Embodiment 3 of the present invention. This embodiment is a further optimization and expansion based on the above embodiments and can be combined with various optional technical solutions in the above embodiments.

As shown in FIG3 , another vehicle shift control method disclosed in this embodiment includes:

S310: Acquire the current gear position and vehicle weight of the target vehicle in real time.

S320. When the current gear is in neutral, determine whether the vehicle weight is equal to the preset empty vehicle weight. If so, execute S330; if not, execute S340.

S330: Set the preset idle vehicle driving gear position as the vehicle starting gear position.

In this embodiment, if the vehicle weight is equal to the preset empty vehicle weight, the target vehicle can be considered empty, and the preset empty vehicle driving gear can be used as the vehicle starting gear. The preset empty vehicle driving gear can be determined according to the preset empty vehicle weight or historical driving data.

For example, assuming that the target vehicle has completed unloading, it can be considered that the current vehicle weight is equal to the preset empty vehicle weight. At this time, the preset empty vehicle driving gear can be used as the vehicle starting gear.

The advantage of this setting is that by using the preset empty vehicle driving gear as the vehicle starting gear when the vehicle weight is equal to the preset empty vehicle weight, the need for rapid return of the vehicle after unloading is completed is met, ensuring high-speed driving of the target vehicle in an empty state.

S340: Acquire drive configuration parameters of the target vehicle, and determine the vehicle output force in an empty vehicle state according to the drive configuration parameters and a preset empty vehicle weight.

In this embodiment, the drive configuration parameters may include engine output torque, drive axle speed ratio, tire rolling radius, etc. The drive configuration parameters of the same vehicle model are the same, and the drive configuration parameters of different vehicle models are different.

In this step, specifically, the empty vehicle transmission speed ratio can be determined according to the preset empty vehicle weight, and the vehicle output force in the empty vehicle state can be determined according to the empty vehicle transmission speed ratio, engine output torque, drive axle speed ratio and tire rolling radius.

The specific calculation formula of vehicle output force can be shown as follows:

.

in, is the vehicle output force, /> is the engine output torque, /> is the transmission ratio, /> is the drive axle speed ratio, /> is the tire rolling radius.

S350: Determine the vehicle starting gear position according to the vehicle output force, the preset empty vehicle weight and the vehicle weight.

In this step, specifically, the output force component of the target vehicle under the heavy load state (i.e. ). Then, the transmission speed ratio under the heavy load state can be determined according to the above output force components, vehicle weight, vehicle output force and preset empty vehicle weight. Finally, the vehicle starting gear can be determined according to the transmission speed ratio under the heavy load state.

Optionally, since the engine output torque, drive axle speed ratio and tire rolling radius of the same vehicle model are the same, the vehicle starting gear position can be determined according to the vehicle weight. The engine output torque, drive axle speed ratio and tire rolling radius of different vehicle models are different, so the vehicle starting gear position needs to be determined comprehensively according to the engine output torque, drive axle speed ratio, tire rolling radius and vehicle weight.

In an optional implementation of an embodiment of the present invention, the vehicle starting gear is determined according to the vehicle output force, the preset empty vehicle weight and the vehicle weight, including: determining the empty vehicle gear ratio according to the vehicle output force and the preset empty vehicle weight; determining the vehicle starting gear according to the empty vehicle gear ratio and the vehicle weight.

In a specific embodiment, the ratio of the output force component to the vehicle weight can be determined. Then, the vehicle starting gear can be determined based on the ratio of the output force component to the vehicle weight and the empty vehicle gear ratio. Optionally, in order to ensure that the starting ability of the target vehicle is equivalent to that of an empty vehicle, the ratio of the vehicle output force and the vehicle weight under the heavy load state can be set to be equal to the empty vehicle gear ratio, and then the vehicle starting gear can be determined based on the empty vehicle gear ratio, the vehicle weight and the output force component.

The principle of determining the vehicle starting gear is as follows: Since the vehicle starting ability is proportional to the vehicle output force (that is, the greater the vehicle output force, the stronger the vehicle starting ability), and the vehicle starting ability is inversely proportional to the vehicle weight (that is, the heavier the vehicle, the worse the starting ability). Therefore, in order to ensure that the starting ability of the target vehicle is equivalent to that of an empty vehicle, the vehicle output force needs to be increased as the vehicle weight increases, that is, the transmission ratio is adjusted according to the vehicle weight.

S360. Control the transmission to switch from the forward gear to the vehicle starting gear through the vehicle controller, so that the target vehicle travels according to the vehicle starting gear.

In this embodiment, when the target vehicle is switched from neutral to forward gear, the vehicle start gear is sent to the TCU. Then, the transmission can be controlled by the TCU to perform a shift operation so that the target vehicle travels according to the vehicle start gear.

S370, obtaining the driving data of the target vehicle in real time, and when the vehicle weight is greater than or equal to the vehicle overload threshold, performing gear shifting control on the target vehicle according to the driving data and a preset gear shifting reference table, so that the target vehicle travels according to the target gear position after the gear shifting.

The advantage of this setting is that by controlling the gear shifting of the target vehicle according to driving data and a preset gear shift reference table, it avoids the problem of inconvenience in driving operation caused by the driver manually selecting different gears according to the weight of the vehicle when fully loaded and unloaded, and improves the vehicle's gear shifting speed.

The technical solution of the present embodiment determines whether the weight of the whole vehicle is equal to the preset empty vehicle weight when the current gear is in neutral; if so, the preset empty vehicle driving gear is used as the vehicle starting gear; if not, the driving configuration parameters of the target vehicle are obtained, and the vehicle output force in the empty vehicle state is determined according to the driving configuration parameters and the preset empty vehicle weight; the vehicle starting gear is determined according to the vehicle output force, the preset empty vehicle weight and the weight of the whole vehicle; the transmission is controlled to switch from the forward gear to the vehicle starting gear through the vehicle controller, so that the target vehicle travels according to the vehicle starting gear; the driving data of the target vehicle is obtained in real time, and the gear shifting control of the target vehicle is performed according to the driving data and the preset gear shifting reference table, so that the target vehicle travels according to the target gear after the gear shifting. The technical solution solves the problem that the gear shifting in manual mode requires too much reliance on the driver, resulting in inaccurate and unreliable gear shifting results, and improves the accuracy and reliability of the vehicle gear shifting control.

FIG4 is a flow chart of a preferred vehicle shift control method provided according to an embodiment of the present invention. Taking the target vehicle as a new energy vehicle as an example, as shown in FIG4 , it can be determined whether the current gear is neutral. If the current gear is neutral, it is determined whether the weight of the whole vehicle is equal to the preset empty vehicle weight. If the weight of the whole vehicle is equal to the preset empty vehicle weight, the preset empty vehicle driving gear is used as the vehicle starting gear. If the weight of the whole vehicle is not equal to the preset empty vehicle weight, the vehicle starting gear is determined according to the weight of the whole vehicle. Among them, the specific determination process of the vehicle starting gear is as follows: the vehicle starting gear is determined by the whole vehicle controller, and the vehicle starting gear is sent to the TCU. Then, the transmission is controlled by the TCU to perform the shift operation.

If the current gear is not neutral, determine whether the vehicle shifting condition is met. If the vehicle speed is greater than the upshift speed threshold, and the slope is less than the upshift slope threshold, and the throttle opening is less than the upshift throttle threshold, the target vehicle is controlled to upshift. If the vehicle speed is less than the downshift speed threshold and the throttle opening is greater than the downshift throttle threshold, the target vehicle is controlled to downshift; or if the slope is greater than the downshift slope threshold and the throttle opening is greater than the downshift throttle threshold, the target vehicle is controlled to downshift. If the vehicle shifting condition is not met, the target vehicle is controlled to maintain the current gear. Among them, the specific determination process of the target gear is as follows: the target gear is determined by the vehicle controller, and the target gear is sent to the TCU. Then, the gear shift operation is performed by the TCU.

Embodiment 4

Figure 5 is a schematic diagram of the structure of a vehicle shift control device provided according to embodiment 4 of the present invention. This embodiment can be applied to the situation of performing shift control on a vehicle. The vehicle shift control device can be implemented in the form of hardware and/or software and can be configured in a vehicle.

As shown in FIG5 , the vehicle shift control device disclosed in this embodiment includes: a starting gear determination module 51, which is used to obtain the current gear and vehicle weight of the target vehicle in real time, and when the current gear is neutral, determine the vehicle starting gear according to the vehicle weight; a vehicle driving module 52, which is used to control the target vehicle to drive at the vehicle starting gear; a shift control module 53, which is used to obtain the driving data of the target vehicle in real time, and when the vehicle weight is greater than or equal to the vehicle overload threshold, perform shift control on the target vehicle according to the driving data and a preset gear calibration table, so that the target vehicle drives according to the target gear after the shift; wherein the driving data includes vehicle speed, slope and throttle opening; and the preset shift reference table includes the mapping relationship between each driving data threshold of the target vehicle and the shift operation.

The technical solution in this embodiment solves the problem that shifting gears in manual mode requires excessive reliance on the driver, resulting in inaccurate and unreliable shifting results, by coordinating the start gear determination module, the vehicle driving module and the shift control module, thereby improving the accuracy and reliability of vehicle shifting control.

Optionally, the shift control module 53 includes: an upshift threshold acquisition unit, which is used to obtain an upshift vehicle speed threshold, an upshift slope threshold and an upshift throttle threshold corresponding to the vehicle speed, slope and throttle opening according to a preset shift reference table; an upshift control unit, which is used to control the target vehicle to upshift if the vehicle speed is greater than the upshift vehicle speed threshold, and the slope is less than the upshift slope threshold, and the throttle opening is less than the upshift throttle threshold; a downshift threshold acquisition unit, which is used to obtain a downshift vehicle speed threshold, a downshift slope threshold and a downshift throttle threshold corresponding to the vehicle speed, slope and throttle opening according to a preset shift reference table; a downshift control unit, which is used to control the target vehicle to downshift if the vehicle speed is less than the downshift vehicle speed threshold and the throttle opening is greater than the downshift throttle threshold; or to control the target vehicle to downshift if the slope is greater than the downshift slope threshold and the throttle opening is greater than the downshift throttle threshold.

Optionally, the starting gear determination module 51 includes: an unloaded gear determination unit, which is used to use the preset unloaded driving gear as the vehicle starting gear if the weight of the whole vehicle is equal to the preset unloaded weight; a vehicle output force determination unit, which is used to obtain the drive configuration parameters of the target vehicle if the weight of the whole vehicle is not equal to the preset unloaded weight, and determine the vehicle output force in the unloaded state according to the drive configuration parameters and the preset unloaded weight; a loaded gear unit, which is used to determine the vehicle starting gear according to the vehicle output force, the preset unloaded weight and the weight of the whole vehicle; a gear ratio determination unit, which is used to determine the unloaded gear ratio according to the vehicle output force and the preset unloaded weight; and a starting gear determination unit, which is used to determine the vehicle starting gear according to the unloaded gear ratio and the weight of the whole vehicle.

Optionally, the vehicle driving module 52 includes: a vehicle driving unit, which is used to control the transmission to switch from the forward gear to the vehicle starting gear through the vehicle controller, so that the target vehicle drives according to the vehicle starting gear.

The vehicle shift control device provided in the embodiment of the present invention can execute the vehicle shift control method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. The contents not described in detail in this embodiment can refer to the description in any method embodiment of this application.

Embodiment 5

FIG. 6 shows a schematic structural diagram of a vehicle 10 that can be used to implement an embodiment of the present invention.

As shown in FIG6 , the vehicle 10 includes at least one processor 11, and a memory connected to the at least one processor 11 in communication, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the vehicle 10 can also be stored. The processor 11, ROM 12 and RAM 13 are connected to each other through a bus 14. The input/output (I/O) interface 15 is also connected to the bus 14. Specifically, the processor 11 can be a vehicle controller.

A number of components in the vehicle 10 are connected to the I/O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the vehicle 10 to exchange information/data with other devices through a computer network such as the Internet and/or various telecommunication networks.

The processor 11 may be a variety of general and/or dedicated processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a vehicle shift control method.

In some embodiments, the vehicle shift control method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed on the vehicle 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the vehicle shift control method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the vehicle shift control method in any other appropriate manner (e.g., by means of firmware).

Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and/or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions/operations specified in the flow chart and/or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, device, or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

To provide interaction with a user, the systems and techniques described herein may be implemented on a vehicle having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the vehicle. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A vehicle shift control method, characterized in that the method comprises: Acquire the current gear position and vehicle weight of the target vehicle in real time, and when the current gear position is neutral, determine the vehicle starting gear position according to the vehicle weight; Controlling the target vehicle to travel in the vehicle starting gear position; Acquire the driving data of the target vehicle in real time, and when the vehicle weight is greater than or equal to the vehicle overload threshold, perform gear shift control on the target vehicle according to the driving data and a preset gear shift reference table, so that the target vehicle travels according to the target gear position after the gear shift; The driving data includes vehicle speed, slope and throttle opening; the preset gear shift reference table includes a mapping relationship between each driving data threshold of the target vehicle and the gear shift operation. 2. The method according to claim 1, characterized in that the step of controlling the gear shift of the target vehicle according to the driving data and a preset gear shift reference table comprises: According to the preset shift reference table, respectively obtaining an upshift vehicle speed threshold, an upshift slope threshold, and an upshift throttle threshold corresponding to the vehicle speed, slope, and throttle opening; If the vehicle speed is greater than the upshift vehicle speed threshold, the slope is less than the upshift slope threshold, and the throttle opening is less than the upshift throttle threshold, the target vehicle is controlled to upshift. 3. The method according to claim 1, characterized in that the step of controlling the gear shift of the target vehicle according to the driving data and a preset gear shift reference table comprises: According to the preset shift reference table, respectively obtaining a downshift vehicle speed threshold, a downshift slope threshold and a downshift throttle threshold corresponding to the vehicle speed, slope and throttle opening; If the vehicle speed is less than the downshift speed threshold and the throttle opening is greater than the downshift throttle threshold, the target vehicle is downshifted; or, If the slope is greater than the downshift slope threshold and the throttle opening is greater than the downshift throttle threshold, the target vehicle is downshifted. 4. The method according to claim 1, characterized in that the determining the vehicle starting gear position according to the vehicle weight comprises: If the vehicle weight is equal to the preset empty vehicle weight, the preset empty vehicle driving gear position is used as the vehicle starting gear position. 5. The method according to claim 1, characterized in that the determining the vehicle starting gear position according to the vehicle weight comprises: If the vehicle weight is not equal to the preset empty vehicle weight, the drive configuration parameters of the target vehicle are obtained, and the vehicle output force in the empty vehicle state is determined according to the drive configuration parameters and the preset empty vehicle weight; The vehicle starting gear position is determined according to the vehicle output force, the preset empty vehicle weight and the vehicle weight. 6. The method according to claim 5, characterized in that the step of determining the vehicle starting gear position according to the vehicle output force, the preset empty vehicle weight and the vehicle weight comprises: Determining an empty vehicle gear ratio according to the vehicle output force and a preset empty vehicle weight; The vehicle starting gear is determined according to the idle gear ratio and the vehicle weight. 7. The method according to claim 1, characterized in that the controlling the target vehicle to travel in the vehicle starting gear position comprises: The vehicle controller controls the transmission to switch from the forward gear to the vehicle starting gear, so that the target vehicle travels according to the vehicle starting gear. 8. A vehicle shift control device, characterized in that the device comprises: A starting gear position determination module is used to obtain the current gear position and vehicle weight of the target vehicle in real time, and when the current gear position is neutral, determine the vehicle starting gear position according to the vehicle weight; A vehicle driving module, used to control the target vehicle to drive in the vehicle starting gear position; The gear shift control module is used to obtain the driving data of the target vehicle in real time, and when the vehicle weight is greater than or equal to the vehicle overload threshold, the gear shift control of the target vehicle is performed according to the driving data and a preset gear calibration table, so that the target vehicle travels according to the target gear after the gear shift; wherein the driving data includes vehicle speed, slope and throttle opening; and the preset gear shift reference table includes the mapping relationship between each driving data threshold of the target vehicle and the gear shift operation. 9. A vehicle, characterized in that the vehicle comprises: At least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the vehicle shift control method described in any one of claims 1-7. 10 . A computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the vehicle shift control method according to any one of claims 1 to 7 when executed.