CN-121993596-A - Method, device and equipment for inhibiting abnormal gear shifting of vehicle

CN121993596ACN 121993596 ACN121993596 ACN 121993596ACN-121993596-A

Abstract

The invention discloses a method, a device and equipment for inhibiting abnormal gear shifting of a vehicle, and relates to the technical field of vehicle control and functional safety, comprising the steps of acquiring a gear shifting request signal and vehicle running state information; the method comprises the steps of determining a target gear based on a gear shifting request signal, obtaining gear state information related to the target gear, performing multi-condition consistency check on the target gear and vehicle speed information, brake pedal state information and gear state information respectively to judge whether the gear shifting request meets preset consistency conditions or not, obtaining a consistency check result, judging whether the gear shifting request is an abnormal gear shifting request or not according to the consistency check result, obtaining an abnormal judgment result, and executing safety control measures when the gear shifting request is judged to be the abnormal gear shifting request according to the abnormal judgment result so as to complete abnormal gear shifting inhibition, thereby preventing unexpected movement or abnormal driving force change of a vehicle.

Inventors

WANG SHANCHAO
LIN XIN
HE SHUILONG
LI YIFAN
CHEN ZIYOU
WANG FANGYUAN
TANG TAO
ZHAN XIN

Assignees

东风柳州汽车有限公司
桂林电子科技大学

Dates

Publication Date: 20260508
Application Date: 20260402

Claims (10)

1. A vehicle gear abnormal shift suppression method, characterized by comprising: Acquiring a gear shifting request signal and vehicle running state information, wherein the vehicle running state information at least comprises vehicle speed information, brake pedal state information and current gear state information; determining a target gear based on the gear shifting request signal, and acquiring gear state information related to the target gear; Performing multi-condition consistency check on the target gear, the vehicle speed information, the brake pedal state information and the gear state information respectively to judge whether the gear shifting request meets preset consistency conditions or not, so as to obtain a consistency check result; judging whether the gear shifting request is an abnormal gear shifting request according to the consistency check result, and obtaining an abnormal judgment result; and executing a safety control measure to complete abnormal gear shift inhibition when the abnormal judgment result judges that the gear shift request is an abnormal gear shift request.
2. The method according to claim 1, wherein the step of performing multi-condition consistency check on the target gear and the vehicle speed information, the brake pedal state information and the gear state information, respectively, to determine whether the shift request satisfies a preset consistency condition, and obtaining a consistency check result includes: carrying out consistency check on the target gear and the vehicle speed information to obtain a vehicle speed consistency check result; carrying out consistency check on the target gear and the brake pedal state information to obtain a brake consistency check result; carrying out consistency check on the target gear and the gear state information to obtain a gear consistency check result; carrying out consistency check on the gear shifting request and the gear shifting request time sequence characteristic to obtain a time sequence consistency check result; And determining a consistency check result according to the vehicle speed consistency check result, the brake consistency check result, the gear consistency check result and the time sequence consistency check result.
3. The method according to claim 2, wherein the step of performing a consistency check on the target gear and the vehicle speed information to obtain a vehicle speed consistency check result includes: acquiring a current vehicle speed value in the vehicle speed information; generating first abnormal indication information when the current vehicle speed value is equal to a preset static vehicle speed threshold value and the target gear is a driving gear or a reverse gear; generating second abnormal indication information when the current vehicle speed value is larger than a preset running vehicle speed threshold value and the target gear is a neutral gear; Generating third abnormal indication information when the current vehicle speed value is larger than a preset reverse gear shifting vehicle speed threshold value and the target gear is a gear opposite to the current running direction; and obtaining a vehicle speed consistency check result according to the first abnormality indication information, the second abnormality indication information and the third abnormality indication information.
4. The method of claim 2, wherein said step of performing a consistency check of said target gear with said brake pedal status information to obtain a brake consistency check result comprises: acquiring a brake pedal state in the brake pedal state information; Generating abnormal braking indication information when the vehicle is in a stationary state, the target gear is a driving gear or a reverse gear, and the brake pedal state is an un-depressed state; And obtaining a braking consistency check result according to the braking abnormality indication information.
5. The method of claim 2, wherein the step of performing a consistency check on the target gear and the gear state information to obtain a gear consistency check result includes: Acquiring gear execution state information and gear feedback information in the gear state information; comparing the target gear with the gear execution state information to obtain an execution state comparison result; Comparing the target gear with the gear feedback information to obtain a feedback comparison result; and obtaining a gear consistency check result according to the execution state comparison result and the feedback comparison result.
6. The method according to claim 1, wherein the step of determining whether the shift request is an abnormal shift request according to the consistency check result, and obtaining an abnormal determination result, includes: Judging whether the consistency check result indicates that at least one of the shift request and the vehicle running state information, the gear executing state information or the gear feedback information does not meet a consistency condition, and obtaining a condition judgment result; And when the condition judgment result indicates that the shift request and at least one of the vehicle running state information, the gear executing state information or the gear feedback information do not meet the consistency condition, judging that the shift request is an abnormal shift request, and obtaining an abnormal judgment result.
7. The method according to claim 1, wherein the step of executing a safety control measure to complete abnormal shift suppression when the abnormality determination result determines that the shift request is an abnormal shift request, includes: Generating a shift inhibit control signal; transmitting a control instruction for maintaining the current gear to a gear executing mechanism based on the gear shifting suppression control signal to obtain a first transmission result; Transmitting a driving torque cut-off request to a whole vehicle controller or a motor controller based on the gear shift suppression control signal to obtain a second transmission result; transmitting a brake maintaining request to a brake system based on the gear shifting suppression control signal to obtain a third transmission result; and according to the first sending result, the second sending result and the third sending result, completing the execution of the safety control measure.
8. A vehicle gear abnormality shift suppression device, characterized by comprising: the signal acquisition module is used for acquiring a gear shifting request signal and vehicle running state information, wherein the vehicle running state information at least comprises vehicle speed information, brake pedal state information and current gear state information; The target gear determining module is used for determining a target gear based on the gear shifting request signal and acquiring gear state information related to the target gear; The consistency verification module is used for carrying out multi-condition consistency verification on the target gear, the vehicle speed information, the brake pedal state information and the gear state information respectively so as to judge whether the gear shifting request meets preset consistency conditions or not and obtain a consistency verification result; The abnormality judging module is used for judging whether the gear shifting request is an abnormal gear shifting request according to the consistency check result to obtain an abnormality judging result; and the suppression execution module is used for executing a safety control measure when the abnormal judgment result judges that the gear shift request is an abnormal gear shift request so as to complete abnormal gear shift suppression.
9. A vehicle gear abnormal shift suppression device, characterized in that the device comprises a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program being configured to implement the steps of the vehicle gear abnormal shift suppression method according to any one of claims 1 to 7.
10. A storage medium, characterized in that the storage medium is a computer-readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, realizes the steps of the vehicle gear abnormality shift suppression method according to any one of claims 1 to 7.

Description

Method, device and equipment for inhibiting abnormal gear shifting of vehicle Technical Field The invention relates to the technical field of vehicle control and functional safety, in particular to a vehicle gear abnormal gear shifting inhibition method, device and equipment. Background With the rapid development of new energy automobiles, electric driving and intelligent driving technologies, a vehicle gear control system is gradually changed from a traditional structure relying on mechanical connecting rods and physical interlocking into an electronic gear shifting system taking electronic signal acquisition, control logic judgment and actuator driving as cores, and the increasing complexity of vehicle operation scenes puts higher demands on gear control safety. The existing gear management system mainly performs gear shifting control according to a single operation condition or a simple interlocking relation, lacks comprehensive analysis and joint judgment capability of consistency among gear shifting request signals, vehicle operation state information and vehicle gear state information, and still can possibly present the situation that a gear shifting request is allowed in logic judgment but has potential safety risk in an actual operation scene under the condition of abnormal signals, inconsistent states or superposition of various factors, so that abnormal gear shifting behaviors such as unsolicited gear shifting, reverse gear shifting or wrong entering neutral gear in the driving process are difficult to recognize and inhibit in time. The foregoing is provided merely for the purpose of facilitating understanding of the technical solutions of the present invention and is not intended to represent an admission that the foregoing is prior art. Disclosure of Invention The invention mainly aims to provide a vehicle gear abnormal shift restraining method, device, equipment and storage medium, which aim to solve the technical problem of how to restrain unexpected movement or abnormal change of driving force caused by vehicle gear abnormal shift. In order to achieve the above object, the present invention provides a vehicle gear abnormal shift suppression method, comprising the steps of: Acquiring a gear shifting request signal and vehicle running state information, wherein the vehicle running state information at least comprises vehicle speed information, brake pedal state information and current gear state information; determining a target gear based on the gear shifting request signal, and acquiring gear state information related to the target gear; Performing multi-condition consistency check on the target gear, the vehicle speed information, the brake pedal state information and the gear state information respectively to judge whether the gear shifting request meets preset consistency conditions or not, so as to obtain a consistency check result; judging whether the gear shifting request is an abnormal gear shifting request according to the consistency check result, and obtaining an abnormal judgment result; and executing a safety control measure to complete abnormal gear shift inhibition when the abnormal judgment result judges that the gear shift request is an abnormal gear shift request. In an embodiment, the step of performing multi-condition consistency check on the target gear and the vehicle speed information, the brake pedal state information and the gear state information respectively to determine whether the gear shift request meets a preset consistency condition, and obtaining a consistency check result includes: carrying out consistency check on the target gear and the vehicle speed information to obtain a vehicle speed consistency check result; carrying out consistency check on the target gear and the brake pedal state information to obtain a brake consistency check result; carrying out consistency check on the target gear and the gear state information to obtain a gear consistency check result; carrying out consistency check on the gear shifting request and the gear shifting request time sequence characteristic to obtain a time sequence consistency check result; And determining a consistency check result according to the vehicle speed consistency check result, the brake consistency check result, the gear consistency check result and the time sequence consistency check result. In an embodiment, the step of performing consistency check on the target gear and the vehicle speed information to obtain a vehicle speed consistency check result includes: acquiring a current vehicle speed value in the vehicle speed information; generating first abnormal indication information when the current vehicle speed value is equal to a preset static vehicle speed threshold value and the target gear is a driving gear or a reverse gear; generating second abnormal indication information when the current vehicle speed value is larger than a preset running vehicle speed threshold value and the target gear is a ne