A new energy automobile ground lock collision early warning system and method

Abstract

The application relates to a new energy vehicle ground lock collision early warning system and method, and belongs to the technical field of vehicle collision detection, wherein the new energy vehicle ground lock collision early warning system comprises a ground lock terminal system, a communication module and a vehicle terminal system; the ground lock terminal system comprises a state sensing module and the communication module; the state sensing module is used for monitoring the lifting state information of a ground lock baffle; the communication module is used for wireless communication with a vehicle; the vehicle terminal system comprises a chassis scanning module, a risk assessment module and a warning prompt module; the chassis scanning module is used for identifying the position of the ground lock baffle; the risk assessment module is used for receiving the lifting state information of the ground lock baffle sent by the communication module and the position of the ground lock baffle identified by the chassis scanning module, and determining the collision risk level of the vehicle based on the lifting state information, height information and position of the ground lock baffle; and the warning prompt module is used for early warning. The application realizes ground lock collision early warning of a new energy vehicle when the new energy vehicle drives into or drives out of a parking space, and improves driving safety.

Description

Technical Field

[0001] This invention relates to the field of vehicle collision detection technology, and in particular to a collision warning system and method for ground locks in new energy vehicles. Background Technology

[0002] With the rapid development of the new energy vehicle industry, its power battery packs are typically placed under the vehicle chassis to optimize space layout and lower the center of gravity. Meanwhile, to improve the management efficiency of urban public parking spaces, parking locks are widely used to prevent long-term occupancy. However, the arrangement of the power battery packs in new energy vehicles overlaps with the physical structure of parking locks in their working areas, giving rise to two typical and frequently occurring safety risks: risks associated with leaving the vehicle and risks associated with entering the vehicle.

[0003] Existing parking lock systems only raise after the vehicle is fully in position, failing to dynamically monitor whether the vehicle has reached an absolutely safe stopping state. Furthermore, they only possess passive mechanical anti-collision functions (such as rebound upon encountering an obstacle), completely lacking the ability to proactively issue collision warnings to the driver during vehicle start-up and movement. The parking lock system is completely independent of the vehicle's electronic control system, lacking real-time information exchange and collaborative risk assessment.

[0004] Therefore, how to implement ground lock collision warning for new energy vehicles when entering or leaving parking spaces to improve driving safety has become an urgent technical problem to be solved. Summary of the Invention

[0005] In view of this, it is necessary to provide a ground lock collision warning system and method for new energy vehicles, so as to realize ground lock collision warning when new energy vehicles enter or leave parking spaces, thereby improving driving safety.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a collision warning system for ground locks in new energy vehicles, comprising: The ground lock terminal system includes: The status sensing module is used to monitor the lifting and lowering status information of the ground lock barrier; The communication module is used to communicate wirelessly with the vehicle and send information about the lifting and lowering status of the ground lock barrier to the vehicle. Vehicle terminal system, including: The chassis scanning module is used to identify the position of the parking lock baffle. The risk assessment module is used to receive the lifting status information of the ground lock baffle sent by the communication module and the position of the ground lock baffle identified by the chassis scanning module, and to determine the collision risk level of the vehicle based on the lifting status information, height information and position of the ground lock baffle. The height information of the ground lock baffle is obtained by at least one of the status perception module and the chassis scanning module. The early warning module is used to provide early warnings based on the vehicle's collision risk level.

[0007] In one possible implementation, the ground lock terminal system further includes: The vehicle detection module is used to detect the driving status of the vehicle. The control module is used to control the ground lock motor to control the lifting and lowering state of the ground lock; The vehicle terminal system also includes: The battery pack positioning module is used to obtain the installation position and dimensions of the battery pack, as well as the minimum ground clearance of the vehicle chassis. The vehicle communication module is used to exchange information with the communication module.

[0008] In one possible implementation, determining the vehicle's collision risk level based on the lifting status information, height information, and position of the ground lock baffle includes: Based on the lifting status, height, and position information of the ground lock baffle, as well as the minimum ground clearance of the vehicle chassis, the collision risk level of the vehicle is determined.

[0009] On the other hand, the present invention also provides a new energy vehicle ground lock collision warning method based on the above-mentioned new energy vehicle ground lock collision warning system, comprising: After the vehicle detection module detects the vehicle entering, the communication module sends a first signal to the vehicle communication module. The first signal is used to request the ground lock barrier to be raised. After receiving the first signal, the vehicle communication module determines the relative distance between the battery pack and the ground lock baffle based on the chassis scanning module, and determines whether the vehicle has come to a complete stop. When the relative distance between the battery pack and the ground lock baffle is less than or equal to the safe distance threshold and the vehicle is stationary, the vehicle communication module sends a second signal to the communication module. The chassis scanning module identifies the height information and position of the ground lock baffle. The second signal is used to indicate the raising of the ground lock baffle. After receiving the second signal, the control module controls the ground lock baffle to rise, and the communication module sends the lifting status information and height information of the ground lock baffle to the vehicle communication module. The risk assessment module determines the vehicle's collision risk level based on the lifting status, height information, and position of the ground lock barrier.

[0010] In one possible implementation, after the vehicle enters, the collision risk level of the vehicle is determined based on the lifting status information, height information, and position of the parking lock barrier, including: If the ground lock baffle is not located in the preset area directly below the battery pack, the vehicle's collision risk level is determined to be the first risk level. When the ground lock baffle is located within a preset area directly below the battery pack; When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is greater than the first safe distance, the collision risk level of the vehicle is determined to be the first risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than or equal to the first safety distance and greater than the second safety distance, the collision risk level of the vehicle is determined to be the second risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than the second safety distance, the collision risk level of the vehicle is determined to be the third risk level.

[0011] In one possible implementation, the method further includes: If the vehicle's collision risk level is at the highest level, a message will be displayed indicating that the parking lock has been raised and the parking space has been locked. If the vehicle's collision risk level is Level 2, the vehicle's chassis height is low, so please do not move the vehicle. If the vehicle's collision risk level is level three, a warning will be displayed indicating that the vehicle has not come to a complete stop and the parking locks have not yet been engaged.

[0012] In one possible implementation, the method further includes: When the vehicle is leaving, the vehicle communication module sends a third signal to the communication module. The third signal is used to indicate that the vehicle is ready to leave. The chassis scanning module identifies the height information and position of the ground lock baffle. After receiving the third signal, the control module controls the ground lock baffle to descend, and the communication module sends the lifting status information and height information of the ground lock baffle to the vehicle communication module. The risk assessment module determines the vehicle's collision risk level based on the lifting status, height information, and position of the ground lock barrier.

[0013] In one possible implementation, when the vehicle is leaving, the collision risk level of the vehicle is determined based on the lifting status information, height information, and position of the ground lock barrier, including: When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is greater than or equal to the third safety distance, the collision risk level of the vehicle is determined to be the fourth risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than the third safety distance but greater than or equal to the fourth safety distance, the collision risk level of the vehicle is determined to be the fifth risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than the fourth safety distance, the vehicle's collision risk level is determined to be the sixth risk level.

[0014] In one possible implementation, the method further includes: In the event of a malfunctioning or jammed ground lock, the vehicle's collision risk level is determined to be Level 7. If a vehicle's collision risk level is level 5, level 6, or level 7, and the vehicle's speed exceeds the speed threshold, the vehicle's collision risk level will be upgraded: level 5 will be upgraded to level 6, level 6 to level 7, and level 7 to level 8.

[0015] In one possible implementation, the method further includes: If the vehicle's collision risk level is level 5, a warning will be displayed indicating that the parking lock has not fully lowered. If the vehicle's collision risk level is level six, the location and height of the parking lock will be displayed. If the vehicle's collision risk level is level seven, a warning will be issued indicating that the parking lock has not fully descended and may be colliding with the battery pack. If the vehicle's collision risk level is level eight, apply emergency braking and issue a hazard warning.

[0016] The beneficial effects of this invention are as follows: The new energy vehicle ground lock collision warning system and method provided by this invention, through the interaction between the ground lock end and the vehicle end, enables the vehicle end to obtain the lifting status and height of the ground lock baffle. At the same time, the vehicle end comprehensively judges the collision risk level of the vehicle based on the height and position of the ground lock baffle it identifies, and issues a warning prompt based on the collision risk level of the vehicle, thereby realizing ground lock collision warning when new energy vehicles enter or leave parking spaces, and improving driving safety. Attached Figure Description

[0017] Figure 1 A schematic diagram of an embodiment of the new energy vehicle ground lock collision warning system provided by the present invention; Figure 2 A schematic flowchart of an embodiment of the collision warning method for ground locks in new energy vehicles provided by the present invention; Figure 3 This is a schematic flowchart of an embodiment of the entry scene warning process provided by the present invention; Figure 4 This is a schematic flowchart of an embodiment of the departure scenario early warning process provided by the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] In the description of the embodiments of the present invention, unless otherwise stated, "multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0020] The terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a technical feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] This invention provides a collision warning system and method for ground locks in new energy vehicles, which will be described below.

[0023] Figure 1 This is a schematic diagram of an embodiment of the new energy vehicle ground lock collision warning system provided by the present invention, as shown below. Figure 1 As shown, the new energy vehicle ground lock collision warning system 100 includes: The ground lock terminal system 101 includes: The status sensing module 1011 is used to monitor the lifting and lowering status information of the ground lock baffle; Communication module 1012 is used to communicate wirelessly with the vehicle and send information about the lifting and lowering status of the ground lock barrier to the vehicle. Vehicle terminal system 102 includes: Chassis scanning module 1021 is used to identify the position of the ground lock baffle; The risk assessment module 1022 is used to receive the lifting status information of the ground lock baffle sent by the communication module and the position of the ground lock baffle identified by the chassis scanning module, and to determine the collision risk level of the vehicle based on the lifting status information, height information and position of the ground lock baffle. The height information of the ground lock baffle is obtained by at least one of the status perception module and the chassis scanning module. The early warning module 1023 is used to provide early warnings based on the collision risk level of the vehicle.

[0024] It should be noted that: the status perception module can monitor the lifting and lowering status and height information of the parking lock baffle in real time through integrated position sensors. The communication module can wirelessly communicate with the vehicle via Bluetooth, LoRa, 4G / 5G, and other multi-mode communication. The chassis scanning module can reuse the vehicle's existing front / rear ultrasonic radar or millimeter-wave radar, actively emitting beams towards a fan-shaped area on the ground in specific scenarios (such as starting the engine or shifting gears) to scan and identify the height information and relative position of the parking lock baffle. The risk assessment module has a built-in preset risk assessment algorithm that can dynamically calculate the collision risk level in the current scenario by combining the status data reported by the parking lock with the vehicle's own chassis parameters. The warning and alert module can issue graded warnings to the driver based on the vehicle's collision risk level through instrument panel icons, buzzer alarms, pop-up windows on the central control screen, or seat vibrations.

[0025] In summary, the new energy vehicle ground lock collision warning system provided in this embodiment of the invention enables the vehicle to obtain the lifting status and height of the ground lock baffle through the interaction between the ground lock end and the vehicle end. At the same time, the vehicle end comprehensively judges the collision risk level of the vehicle based on the height and position of the ground lock baffle it identifies, and issues a warning prompt based on the collision risk level of the vehicle. This realizes ground lock collision warning when new energy vehicles enter and leave parking spaces, thereby improving driving safety.

[0026] In some embodiments of the present invention, the floor lock terminal system further includes: The vehicle detection module is used to detect the driving status of the vehicle; The control module is used to control the ground lock motor to control the lifting and lowering state of the ground lock; The vehicle terminal system also includes: The battery pack positioning module is used to obtain the installation position and dimensions of the battery pack, as well as the minimum ground clearance of the vehicle chassis. The vehicle communication module is used to exchange information with the communication module.

[0027] It should be noted that the vehicle detection module can accurately detect changes in the status of vehicles entering, stopping, and leaving parking spaces using geomagnetic sensors, pressure sensors, or low-power cameras. The control module can receive control commands from the vehicle to precisely control the raising, lowering, and stopping actions of the parking lock motor. The control module can also receive control commands from the cloud. The battery pack positioning module can obtain the precise installation coordinates, geometric dimensions, and minimum ground clearance data of the battery pack in real time from the vehicle's CAN bus or onboard memory. The vehicle communication module can be an onboard controller or an additional communication device.

[0028] In some embodiments of the present invention, determining the collision risk level of a vehicle based on the lifting status information, height information, and position of the ground lock baffle includes: Based on the lifting status, height, and position information of the ground lock baffle, as well as the minimum ground clearance of the vehicle chassis, the collision risk level of the vehicle is determined.

[0029] It should be noted that when determining the collision risk level of a vehicle based on the lifting status, height information, and position of the ground lock baffle, the minimum ground clearance of the vehicle chassis can be further considered to determine the collision risk level of the vehicle.

[0030] Figure 2 This is a schematic flowchart of an embodiment of the new energy vehicle ground lock collision warning method provided by the present invention. The method is executed based on the aforementioned new energy vehicle ground lock collision warning system. Figure 2 As shown, the collision warning method for ground locks in new energy vehicles includes: S201. After the vehicle detection module detects that a vehicle has entered, the communication module sends a first signal to the vehicle communication module. The first signal is used to request the ground lock barrier to be raised.

[0031] It should be noted that when the vehicle detection module detects a vehicle entering, the communication module can send a first signal to the vehicle communication module to request the ground lock barrier to be raised, instead of raising the ground lock barrier directly, thereby ensuring vehicle safety.

[0032] S202. After receiving the first signal, the vehicle communication module determines the relative distance between the battery pack and the ground lock baffle based on the chassis scanning module, and determines whether the vehicle has come to a complete stop.

[0033] It should be noted that after receiving the first signal, the vehicle communication module can determine the relative distance between the battery pack and the ground lock baffle through the chassis scanning module, and determine whether the vehicle is stationary, in order to determine whether the ground lock baffle is allowed to rise.

[0034] S203. When it is determined that the relative distance between the battery pack and the ground lock baffle is less than or equal to the safe distance threshold and the vehicle is stationary, the vehicle communication module sends a second signal to the communication module. The chassis scanning module identifies the height information and position of the ground lock baffle. The second signal is used to indicate the raising of the ground lock baffle.

[0035] It should be noted that when the relative distance between the battery pack and the ground lock baffle is less than or equal to the safe distance threshold, and the vehicle is stationary, the vehicle communication module can send a second signal to the communication module to instruct the ground lock baffle to rise. At the same time, the chassis scanning module identifies the height information and position of the ground lock baffle to further ensure the safety of the vehicle.

[0036] S204. After receiving the second signal, the control module controls the ground lock baffle to rise, and the communication module sends the lifting status information and height information of the ground lock baffle to the vehicle communication module.

[0037] It should be noted that after receiving the second signal, the control module can control the ground lock baffle to rise. At the same time, the communication module sends the lifting status information and height information of the ground lock baffle to the vehicle communication module, so that the vehicle can monitor the status of the ground lock baffle in real time.

[0038] S205 The risk assessment module determines the collision risk level of the vehicle based on the lifting status information, height information and position of the ground lock baffle.

[0039] It should be noted that: Finally, the risk assessment module can determine the vehicle's collision risk level based on the lifting status, height information, and position of the ground lock barrier.

[0040] In summary, the new energy vehicle ground lock collision warning method provided in this embodiment of the invention enables the vehicle to obtain the lifting status and height of the ground lock baffle through the interaction between the ground lock end and the vehicle end. At the same time, the vehicle end comprehensively judges the collision risk level of the vehicle based on the height and position of the ground lock baffle it identifies, thereby realizing ground lock collision warning when new energy vehicles enter or leave parking spaces and improving driving safety.

[0041] In some embodiments of the present invention, after a vehicle enters the parking space, determining the collision risk level of the vehicle based on the lifting status information, height information, and position of the parking lock barrier includes: If the ground lock baffle is not located in the preset area directly below the battery pack, the vehicle's collision risk level is determined to be the first risk level. When the ground lock baffle is located within a preset area directly below the battery pack; When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is greater than the first safe distance, the collision risk level of the vehicle is determined to be the first risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than or equal to the first safety distance and greater than the second safety distance, the collision risk level of the vehicle is determined to be the second risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than the second safety distance, the collision risk level of the vehicle is determined to be the third risk level.

[0042] It should be noted that the collision risk level of a vehicle can be determined using the above rules when the vehicle enters the area.

[0043] In some embodiments of the present invention, the method further includes: If the vehicle's collision risk level is at the highest level, a message will be displayed indicating that the parking lock has been raised and the parking space has been locked. If the vehicle's collision risk level is Level 2, the vehicle's chassis height is low, so please do not move the vehicle. If the vehicle's collision risk level is level three, a warning will be displayed indicating that the vehicle has not come to a complete stop and the parking locks have not yet been engaged.

[0044] It should be noted that when a vehicle enters the area, appropriate prompts may be given according to the rules mentioned above, based on the determined collision risk level.

[0045] In some embodiments of the present invention, the method further includes: When the vehicle is leaving, the vehicle communication module sends a third signal to the communication module. The third signal is used to indicate that the vehicle is ready to leave. The chassis scanning module identifies the height information and position of the ground lock baffle. After receiving the third signal, the control module controls the ground lock baffle to descend, and the communication module sends the lifting status information and height information of the ground lock baffle to the vehicle communication module. The risk assessment module determines the vehicle's collision risk level based on the lifting status, height information, and position of the ground lock barrier.

[0046] It should be noted that when the vehicle is leaving, the vehicle communication module can send a third signal to the chassis scanning module to indicate that the vehicle is preparing to leave. Simultaneously, the chassis scanning module identifies the height and position of the parking lock baffle. After receiving the third signal, the control module can control the parking lock baffle to lower, and the communication module simultaneously sends the parking lock baffle's lifting / lowering status and height information to the vehicle communication module. Finally, the risk assessment module determines the vehicle's collision risk level based on the parking lock baffle's lifting / lowering status, height information, and position.

[0047] In some embodiments of the present invention, when the vehicle is leaving, determining the collision risk level of the vehicle based on the lifting status information, height information, and position of the ground lock barrier includes: When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is greater than or equal to the third safety distance, the collision risk level of the vehicle is determined to be the fourth risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than the third safety distance but greater than or equal to the fourth safety distance, the collision risk level of the vehicle is determined to be the fifth risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than the fourth safety distance, the vehicle's collision risk level is determined to be the sixth risk level.

[0048] It should be noted that the collision risk level of a vehicle can be determined using the above rules when the vehicle is leaving the area.

[0049] In some embodiments of the present invention, the method further includes: In the event of a malfunctioning or jammed ground lock, the vehicle's collision risk level is determined to be Level 7. If a vehicle's collision risk level is level 5, level 6, or level 7, and the vehicle's speed exceeds the speed threshold, the vehicle's collision risk level will be upgraded: level 5 will be upgraded to level 6, level 6 to level 7, and level 7 to level 8.

[0050] It should be noted that if the parking lock malfunctions or jams, it directly indicates a risk of collision between the vehicle and the parking lock. Furthermore, if the vehicle's speed exceeds a certain speed threshold when it is at risk of colliding with the parking lock, the collision risk level can be upgraded to further improve vehicle safety.

[0051] In some embodiments of the present invention, the method further includes: If the vehicle's collision risk level is level 5, a warning will be displayed indicating that the parking lock has not fully lowered. If the vehicle's collision risk level is level six, the location and height of the parking lock will be displayed. If the vehicle's collision risk level is level seven, a warning will be issued indicating that the parking lock has not fully descended and may be colliding with the battery pack. If the vehicle's collision risk level is level eight, apply emergency braking and issue a hazard warning.

[0052] It should be noted that when a vehicle leaves, appropriate prompts can be given according to the rules mentioned above, based on the determined collision risk level.

[0053] The following specific embodiments illustrate the collision warning system and method for new energy vehicle ground locks provided by the present invention.

[0054] The new energy vehicle ground lock collision warning system provided by this invention specifically includes: Ground lock end module: Status sensing unit: Installed inside the ground lock body, it monitors the lifting status and actual physical height of the ground lock baffle in real time through an integrated position sensor.

[0055] Vehicle detection unit: Utilizes geomagnetic sensors, pressure sensors, or low-power cameras to accurately detect changes in the status of vehicles entering, stopping, or leaving above parking spaces.

[0056] Communication unit: Supports multi-mode communication such as Bluetooth, LoRa, 4G / 5G, and is responsible for low-latency data interaction with vehicles within range.

[0057] Control unit: Receives control commands from the vehicle or cloud to precisely control the raising, lowering, and stopping actions of the ground lock motor.

[0058] Vehicle-side module: Chassis scanning unit: Reuses the vehicle's existing front / rear ultrasonic radar or millimeter-wave radar, and actively emits beams into a fan-shaped area on the ground in specific scenarios (such as starting, shifting gears) to scan and identify the height and relative position of obstacles (such as ground lock baffles).

[0059] Battery pack positioning unit: Real-time acquisition of precise installation position coordinates, geometric dimensions, and minimum ground clearance data of the current vehicle chassis from the vehicle CAN bus or on-board memory.

[0060] Risk assessment unit: Built-in fusion algorithm, which combines the status data reported by the ground lock with the vehicle's own chassis parameters to dynamically calculate the collision risk level in the current scenario.

[0061] Warning unit: Based on the risk level, it issues graded warnings to the driver through instrument panel icons, buzzer alarms, pop-up windows on the central control screen, or seat vibration.

[0062] Cloud platform: Historical data recording: Securely stores key data such as every change in lock status, warning trigger records, and collision accident reports.

[0063] Data fusion analysis: Cross-analysis of massive amounts of data reported by parking locks and vehicles is used to optimize algorithm models, identify high-risk parking spaces, and support accident liability tracing.

[0064] 1. Ground lock active early warning mode.

[0065] The ground lock has a built-in ultrasonic / laser range sensor to continuously monitor the actual height of its own baffle.

[0066] When the vehicle detection unit of the ground lock senses a change in the vehicle's status (such as changing from "no vehicle" to "entering" or from "stopped" to "departing"), the ground lock communication unit actively sends a data message containing "current barrier height" and "ground lock ID" to the vehicle.

[0067] After receiving the data, the vehicle-side risk assessment unit immediately compares and calculates it with the "current chassis height" obtained from the CAN bus: Risk value = Ground lock height - Chassis safety threshold.

[0068] If the calculated risk level exceeds the preset threshold, the vehicle will immediately trigger a graded warning and may selectively send a reverse control command to the ground lock to "stop raising" or "emergency lowering".

[0069] 2. Vehicle-mounted active scanning mode.

[0070] When the vehicle (in park) is started or the driver shifts the gear lever from "P" to "D" or "R", the vehicle's chassis scanning function is automatically activated.

[0071] The ultrasonic / millimeter-wave radars at the front and rear of the vehicle begin to perform a fan-shaped scan towards the ground, identifying raised obstacles on the ground at close range (e.g., within 0.5m) in front of and behind the vehicle, and accurately measuring their height.

[0072] The system uses the vehicle navigation map (which remembers the parking space) or short-range communication with the parking lock to determine whether the scanned obstacle is a known parking lock.

[0073] If an obstacle is detected whose height exceeds the current safe passage height of the chassis (e.g., higher than 15cm) and whose location matches the area of ​​the ground lock, the system will immediately trigger a strong warning and highlight the location of the obstacle on the dashboard (e.g., "Caution: The rear ground lock has not been lowered").

[0074] 3. Two-way warning mode linked to vehicle lock.

[0075] When the parking lock detects a vehicle entering, it does not immediately raise the lock, but instead sends a "request to raise" signal to the vehicle.

[0076] The vehicle system performs a chassis scan. Once it confirms that the vehicle is completely stationary and the chassis is safe, it replies "Allow lifting".

[0077] The ground lock will only lift up after receiving a permission signal.

[0078] When leaving, the vehicle sends a "preparing to leave" signal to the ground lock after starting the engine.

[0079] The ground lock performs the locking action and sends feedback on the ground lock status to the vehicle.

[0080] Only after the vehicle has scanned and confirmed that the ground lock has fully lowered can the vehicle be put into Drive (D) gear.

[0081] The warning process for entering a driving scenario is as follows: Figure 3 As shown.

[0082] The risk assessment algorithm for entering the scenario is as follows: Input parameters: vehicle position coordinates, battery pack installation position (coordinates relative to the vehicle coordinate system); battery pack ground clearance H_battery, ground lock position coordinates (x_lock, y_lock), ground lock current height H_lock, vehicle status information (gear, speed, steering wheel angle).

[0083] Algorithm steps: 1. Calculate the relative position of the ground lock in the vehicle coordinate system.

[0084] 2. Determine if the ground lock is located directly below the battery pack. Determination area: +0.5m in front and behind the battery pack, +0.3m in the left and right. If the ground lock is within the determination area, proceed to step 3; otherwise, the risk level = 0 (low risk).

[0085] 3. Calculate collision risk.

[0086] Vertical distance = H_battery - H_lock, safety margin = 20mm (configurable).

[0087] Risk value = H_lock - (H_battery - safety margin).

[0088] 4. Risk level determination.

[0089] If the risk value is less than 0: Risk level = 0 (safe, lift allowed).

[0090] If 0 < risk value < 30mm: risk level = 1 (medium risk, warning after raising).

[0091] In other cases, the risk level is 2 (high risk, raising is prohibited).

[0092] Output: Risk level, allow / disallow lift command.

[0093] Risk level: Level 0 (safe), Ground lock action: Normally raised, cockpit prompt: Ground lock raised, parking space locked.

[0094] Risk level: Level 1 (medium risk), Ground lock action: Slowly rises (speed reduced by 50%), Cockpit warning: Chassis height is low, do not move the vehicle.

[0095] Risk level: Level 2 (high risk), Ground lock action: Keep descending, repeat scan, Cockpit prompt: Vehicle has not come to a complete stop, ground lock has not yet been raised.

[0096] The warning process for leaving the scene is as follows: Figure 4 As shown.

[0097] The risk assessment algorithm for the departure scenario is as follows: Input parameters: ground lock height H_lock, battery pack ground clearance H_battery, ground lock status (raised / lowered / malfunction / jammed), vehicle speed (speed when in D gear).

[0098] Algorithm steps: 1. Check the status of the ground lock.

[0099] If the lock is faulty or stuck, the risk level is 3 (highest risk); otherwise, proceed to step 2.

[0100] 2. High-risk assessment.

[0101] Vertical distance = H_battery - H_lock.

[0102] If the vertical distance is less than 50mm: Risk level = 2 (high risk).

[0103] If 50mm ≤ vertical distance < 100mm: Risk level = 1 (medium risk).

[0104] Other situations: Risk level = 0 (safe).

[0105] 3. Mobile risk assessment.

[0106] If the risk level is greater than 0 and the vehicle speed is greater than 5 km / h: the risk level is increased by 1.

[0107] Output: Risk level, warning level, vehicle control command.

[0108] Communication protocol design: Communication methods include: Short-range communication: Bluetooth BLE 5.0 (used when the vehicle is stationary).

[0109] Mid-range communication: LoRa / NB-IoT (used when the vehicle is within the parking lot area).

[0110] Long-distance communication: 4G / 5G (via cloud platform relay).

[0111] The present invention has the following advantages: Full-scenario coverage: Simultaneously covers two key scenarios, entering and leaving the vehicle, avoiding the risk of the ground lock colliding with the battery pack.

[0112] Proactive prevention: Conduct risk assessments and provide early warnings before a collision occurs to avoid accidents at the source.

[0113] Precise identification: Through multi-sensor fusion, accurately identify the status of the ground lock, the vehicle position, and the battery pack height.

[0114] Tiered early warning: Provides different levels of early warning based on the risk level to avoid excessive disruption.

[0115] Two-way linkage: The ground lock and the vehicle can communicate and interact in two directions and make collaborative decisions.

[0116] High compatibility: It can be integrated with existing smart lock systems and supports OTA upgrades.

[0117] Data traceability: Records data such as the status of the ground lock, warning history, and collision accidents, providing a basis for determining liability in accidents.

[0118] Reduce economic losses: Avoid high repair costs and warranty breach risks caused by battery pack damage.

[0119] The collision warning system and method for new energy vehicle ground locks provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A collision warning system for ground locks in new energy vehicles, characterized in that, include: The ground lock terminal system includes: The status sensing module is used to monitor the lifting and lowering status information of the ground lock barrier; The communication module is used to communicate wirelessly with the vehicle and send information about the lifting and lowering status of the ground lock barrier to the vehicle. Vehicle terminal system, including: The chassis scanning module is used to identify the position of the parking lock baffle. The risk assessment module is used to receive the lifting status information of the ground lock baffle sent by the communication module and the position of the ground lock baffle identified by the chassis scanning module, and to determine the collision risk level of the vehicle based on the lifting status information, height information and position of the ground lock baffle. The height information of the ground lock baffle is obtained by at least one of the status perception module and the chassis scanning module. The early warning module is used to provide early warnings based on the vehicle's collision risk level.

2. The new energy vehicle ground lock collision warning system according to claim 1, characterized in that, The ground lock terminal system also includes: The vehicle detection module is used to detect the driving status of the vehicle. The control module is used to control the ground lock motor to control the lifting and lowering state of the ground lock; The vehicle terminal system also includes: The battery pack positioning module is used to obtain the installation position and dimensions of the battery pack, as well as the minimum ground clearance of the vehicle chassis. The vehicle communication module is used to exchange information with the communication module.

3. The new energy vehicle ground lock collision warning system according to claim 2, characterized in that, The collision risk level of the vehicle is determined based on the lifting status information, height information, and position information of the ground lock barrier, including: Based on the lifting status, height, and position information of the ground lock baffle, as well as the minimum ground clearance of the vehicle chassis, the collision risk level of the vehicle is determined.

4. A method for providing early warning of collisions with a new energy vehicle's parking lock, based on the collision warning system for new energy vehicles as described in claim 3, characterized in that... include: After the vehicle detection module detects the vehicle entering, the communication module sends a first signal to the vehicle communication module. The first signal is used to request the ground lock barrier to be raised. After receiving the first signal, the vehicle communication module determines the relative distance between the battery pack and the ground lock baffle based on the chassis scanning module, and determines whether the vehicle has come to a complete stop. When the relative distance between the battery pack and the ground lock baffle is less than or equal to the safe distance threshold and the vehicle is stationary, the vehicle communication module sends a second signal to the communication module. The chassis scanning module identifies the height information and position of the ground lock baffle. The second signal is used to indicate the raising of the ground lock baffle. After receiving the second signal, the control module controls the ground lock baffle to rise, and the communication module sends the lifting status information and height information of the ground lock baffle to the vehicle communication module. The risk assessment module determines the vehicle's collision risk level based on the lifting status, height information, and position of the ground lock barrier.

5. The collision warning method for ground locks in new energy vehicles according to claim 4, characterized in that, After a vehicle enters, the collision risk level of the vehicle is determined based on the lifting status information, height information, and position of the ground lock barrier, including: If the ground lock baffle is not located in the preset area directly below the battery pack, the vehicle's collision risk level is determined to be the first risk level. When the ground lock baffle is located within a preset area directly below the battery pack; When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is greater than the first safe distance, the collision risk level of the vehicle is determined to be the first risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than or equal to the first safety distance and greater than the second safety distance, the collision risk level of the vehicle is determined to be the second risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than the second safety distance, the collision risk level of the vehicle is determined to be the third risk level.

6. The collision warning method for ground locks in new energy vehicles according to claim 5, characterized in that, The method further includes: If the vehicle's collision risk level is at the highest level, a message will be displayed indicating that the parking lock has been raised and the parking space has been locked. If the vehicle's collision risk level is Level 2, the vehicle's chassis height is low, so please do not move the vehicle. If the vehicle's collision risk level is level three, a warning will be displayed indicating that the vehicle has not come to a complete stop and the parking locks have not yet been engaged.

7. The collision warning method for ground locks in new energy vehicles according to claim 4, characterized in that, The method further includes: When the vehicle is leaving, the vehicle communication module sends a third signal to the communication module. The third signal is used to indicate that the vehicle is ready to leave. The chassis scanning module identifies the height information and position of the ground lock baffle. After receiving the third signal, the control module controls the ground lock baffle to descend, and the communication module sends the lifting status information and height information of the ground lock baffle to the vehicle communication module. The risk assessment module determines the vehicle's collision risk level based on the lifting status, height information, and position of the ground lock barrier.

8. The collision warning method for ground locks in new energy vehicles according to claim 7, characterized in that, When the vehicle leaves, the collision risk level of the vehicle is determined based on the lifting status information, height information, and position of the ground lock barrier, including: When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is greater than or equal to the third safety distance, the collision risk level of the vehicle is determined to be the fourth risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than the third safety distance but greater than or equal to the fourth safety distance, the collision risk level of the vehicle is determined to be the fifth risk level. When the difference between the minimum ground clearance of the vehicle chassis and the height of the ground lock baffle is less than the fourth safety distance, the vehicle's collision risk level is determined to be the sixth risk level.

9. The collision warning method for ground locks in new energy vehicles according to claim 8, characterized in that, The method further includes: In the event of a malfunctioning or jammed ground lock, the vehicle's collision risk level is determined to be Level 7. If a vehicle's collision risk level is level 5, level 6, or level 7, and the vehicle's speed exceeds the speed threshold, the vehicle's collision risk level will be upgraded: level 5 will be upgraded to level 6, level 6 to level 7, and level 7 to level 8.

10. The collision warning method for ground locks in new energy vehicles according to claim 9, characterized in that, The method further includes: If the vehicle's collision risk level is level 5, a warning will be displayed indicating that the parking lock has not fully lowered. If the vehicle's collision risk level is level six, the location and height of the parking lock will be displayed. If the vehicle's collision risk level is level seven, a warning will be issued indicating that the parking lock has not fully descended and may be colliding with the battery pack. If the vehicle's collision risk level is level eight, apply emergency braking and issue a hazard warning.

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