Search

CN-122009077-A - Method for detecting a slight damage on a vehicle

CN122009077ACN 122009077 ACN122009077 ACN 122009077ACN-122009077-A

Abstract

Embodiments of the present disclosure relate to methods for identifying minor damage on a vehicle. The invention relates to a method for detecting a slight damage to a vehicle using a user control and an evaluation and control unit, to continuously receive direction-dependent sensor data and to process and evaluate the same if necessary, to calculate at least one characteristic on the basis of the same, to estimate a collision region and a collision angle on the basis of the same, to predetermine at least one threshold value on the basis of the estimated collision region and the estimated collision angle, to compare the calculated at least one characteristic and/or direction-dependent sensor data and/or processed direction-dependent sensor data with the at least one threshold value, to detect an external effect and a corresponding slight damage when the calculated characteristic and/or direction-dependent sensor data and/or processed direction-dependent sensor data exceeds the at least one predetermined threshold value and falls below a triggering threshold value of a restraint device, and to a control unit for a vehicle.

Inventors

  • J. J. Roberts
  • S. Kony

Assignees

  • 罗伯特·博世有限公司

Dates

Publication Date
20260512
Application Date
20251112
Priority Date
20241112

Claims (16)

  1. 1. Method (100) for detecting a slight damage on a vehicle (1) using a central controller (12) in which at least one internal sensor (14) is arranged, and an evaluation and control unit (20), wherein direction-dependent sensor data (SDx, SDy, SDz) from the at least one internal sensor (14) are continuously received (S100) and, if required, processed and evaluated, wherein at least one feature is calculated on the basis of the direction-dependent sensor data (SDx, SDy, SDz) or the processed direction-dependent sensor data (SDx, SDy, SDz), wherein a collision Area (AZ) and a collision Angle (AW) are estimated on the basis of the calculated at least one feature, wherein at least one threshold value is predefined on the basis of the estimated collision Area (AZ) and the estimated collision Angle (AW), wherein the calculated at least one feature and/or the direction-dependent sensor data (SDx, SDy, SDz) and/or the processed direction-dependent sensor data (SDx, SDy, SDz) are compared with the at least one sensor data (SDx, SDy, SDz) and/or the processed direction-dependent sensor data (SDx, SDy, SDz), wherein the calculated at least one threshold value is compared with the at least one sensor data (SDx, SDy, SDz) and/or the calculated direction-dependent sensor data (SDx, SDy, SDz SDz) exceeds the at least one predefined threshold value and falls below a triggering threshold value of a restraint device of an occupant protection system of the vehicle (1), an external effect on the vehicle (1) and a corresponding slight damage are detected.
  2. 2. The method (100) according to claim 1, wherein a sliding signal average calculation and/or a sliding signal energy average calculation and/or filtering is performed on processing the direction-dependent sensor data (SDx, SDy, SDz) to smooth the direction-dependent sensor data (SDx, SDy, SDz).
  3. 3. The method (100) according to claim 1 or 2, characterized in that a first direction vector (AVx) representing signal energy in a vehicle longitudinal direction (x), a second direction vector (AVy) representing signal energy in a vehicle transverse direction (y) and/or a third direction vector (AVz) representing signal energy in a vehicle vertical direction (z) are calculated within a sliding window as features of the direction-dependent sensor data (SDx, SDy, SDz), wherein a resultant collision vector (AV) and a euclidean distance (|av|) of the collision vector (AV) are calculated based on the three direction vectors (AVx, AVy, AVz) as further features of the direction-dependent sensor data (SDx, SDy, SDz).
  4. 4. A method (100) according to claim 3, characterized in that at least one first angle (W1) in the x-y plane of the vehicle (1) is estimated based on the first direction vector (AVx) and the second direction vector (AVy), which first angle is used as a collision Angle (AW) at the time of a frontal collision, a rear collision or a side collision.
  5. 5. The method (100) according to claim 4, characterized in that a second angle (W2) is estimated based on the third direction vector (AVz) and the euclidean distance (|av|), which is additionally used when the injury is at the bottom or roof of the vehicle (1).
  6. 6. The method (100) according to any one of claims 1 to 5, characterized in that additionally Sensor Data (SD) from at least one peripheral sensor (16) arranged in the region of a housing (3) of the vehicle (1) are continuously received and, if necessary, processed and evaluated analytically to estimate the collision region (AZ) and the collision Angle (AW).
  7. 7. Method (100) according to any one of claims 1 to 6, characterized in that additional information about a current vehicle state (FZ) and/or about a current operating state (BZ) and/or about a current vehicle environment (FU) available in the vehicle (1) is provided and evaluated analytically.
  8. 8. Method (100) according to claims 1 and 7, characterized in that a dynamic behavior of the vehicle is estimated based on the calculated at least one feature and/or the direction-dependent sensor data (SDx, SDy, SDz) and/or the processed direction-dependent sensor data (SDx, SDy, SDz) and/or the additional information available in the vehicle (1) and a corresponding dynamic index is assigned to the dynamic behavior and used to adapt the at least one threshold value.
  9. 9. The method (100) according to any one of claims 1 to 8, wherein the calculated at least one feature and/or the direction-dependent sensor data (SDx, SDy, SDz) and/or the processed direction-dependent sensor data (SDx, SDy, SDz) are filtered at different frequencies prior to the threshold comparison.
  10. 10. The method (100) according to any one of claims 1 to 9, characterized in that external effects and corresponding minor damage to the vehicle (1) are stored and/or displayed internally and/or externally.
  11. 11. A controller assembly (10) for a vehicle (1), having at least one central controller (12) in which at least one internal sensor (14) is arranged, and having at least one analytical evaluation and control unit (20) which is designed to execute a method (100) for identifying a slight injury on a vehicle (1) according to any one of claims 1 to 10 in addition to a method for activating a restraint device, and to receive direction-dependent sensor data (SDx, SDy, SDz) from the at least one internal sensor (14) and to evaluate the sensor data analytically in order to identify an external effect on the vehicle (1).
  12. 12. The controller assembly (10) according to claim 11, characterized in that at least one peripheral sensor (16) is arranged in the region of the housing (3) of the vehicle (1), wherein the at least one evaluation and control unit (20) is further designed for receiving Sensor Data (SD) from the at least one peripheral sensor (16) and for evaluating the sensor data in an analytical manner in order to identify external effects on the vehicle (1).
  13. 13. The controller assembly (10) according to claim 11 or 12, characterized in that the at least one internal sensor (14) is designed as an acceleration sensor or a rotation rate sensor.
  14. 14. The controller assembly (10) according to claim 12 or 13, characterized in that the at least one peripheral sensor (16) is designed as an acceleration sensor or a pressure sensor.
  15. 15. The controller assembly (10) according to any one of claims 11 to 14, wherein the at least one analytical evaluation and control unit (20) is arranged in the central controller (12).
  16. 16. The controller assembly (10) according to any one of claims 11 to 15, characterized in that the at least one central controller (12) comprises communication means designed for receiving additional information about a current vehicle state and/or a current operating state and/or a vehicle environment available in the vehicle (1) and/or for establishing a wireless communication connection (32) with an external cloud service (30).

Description

Method for detecting a slight damage on a vehicle Technical Field The invention relates to a method for detecting a slight damage on a vehicle. The subject matter of the present invention also includes a controller assembly for a vehicle that is implemented to perform a method for identifying a mild injury on a vehicle. Background DE 10 2012 018 521 A1 discloses a method and a device for detecting damage in a motor vehicle having a controller and at least one sensor device, in which method and device the controller evaluates whether a damage event has occurred in or on the motor vehicle on the basis of sensor data transmitted to the controller by the at least one sensor device, and if this is the case, generates a damage report. In this way, damage can be clearly assigned to individual tenants, especially in the case of rental vehicles. DE 10 2021 209 257 B4 discloses a device and a method for detecting damage to a vehicle housing. Here, the vehicle is configured as a specific type of vehicle having specific vehicle data. The lesions are divided into at least two groups. The first set of lesions have a greater severity of lesions than the second set of lesions. The acceleration of the vehicle is determined by means of an acceleration sensor and/or the rotational speed of the vehicle is determined by means of a rotational speed sensor. When the acceleration of the vehicle exceeds an acceleration threshold and/or the rotation rate of the vehicle exceeds a rotation rate threshold, a first set of lesions is found. The acceleration and/or rotation rate is compared to values of acceleration and/or rotation rate learned for a particular vehicle type. When a lesion is identified based on a comparison with the learned values, a second set of lesions is found. Disclosure of Invention The method for detecting a slight damage on a vehicle with the features of independent claim 1 and the control unit for a vehicle with the features of independent claim 11 have the advantage that particularly small impact and/or crash events, i.e. accidents, slight damage, etc., on the vehicle can be detected during the driving of the vehicle and in the stopped state. The "intensity" of the crash event referred to here is below the triggering threshold of the restraint device of the corresponding occupant protection system, which includes, for example, an airbag, a belt pretensioner, etc. This means that with the embodiment of the method according to the invention for detecting a damage on a vehicle, the accident detection of an occupant protection system installed in a vehicle can be specifically extended to the range of lighter accidents or minor damage. Such near real-time existing impairment information can be used to automatically trigger follow-up measures that can bring additional value to both fleet operators and vehicle users. In order to carry out the method according to the invention for detecting a slight damage on a vehicle, hardware already installed in the vehicle, such as an airbag controller, internal sensors and/or peripheral sensors, can be used. Embodiments of the present invention provide a method for identifying minor damage on a vehicle using a controller with at least one internal sensor disposed therein and an analytical evaluation and control unit. In this case, the direction-dependent sensor data are continuously received from at least one internal sensor and, if necessary, processed and evaluated analytically. At least one feature is calculated based on the direction-dependent sensor data or the processed direction-dependent sensor data. The collision region and the collision angle are estimated based on the calculated at least one feature. At least one threshold value is predefined on the basis of the estimated collision region and the estimated collision angle. The calculated at least one characteristic and/or direction-dependent sensor data and/or the processed direction-dependent sensor data is compared with at least one threshold value. In this case, external effects and corresponding minor damage to the vehicle are detected if the calculated at least one characteristic and/or direction-dependent sensor data and/or the processed direction-dependent sensor data exceed at least one predefined threshold value and fall below a triggering threshold value of a restraint device of the vehicle occupant protection system. Furthermore, a control unit for a vehicle is proposed, which has at least one control unit in which at least one internal sensor and at least one evaluation and control unit are arranged, which is designed to carry out such a method for detecting slight damage on the vehicle in addition to a method for activating a restraint device, and to receive and evaluate direction-dependent sensor data from the at least one internal sensor in order to detect an external effect on the vehicle. Embodiments of the method for identifying damage on a vehicle according to the invention operate in parallel with th