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DE-102024210752-A1 - Methods for recording road surface conditions and road surface condition recording systems

DE102024210752A1DE 102024210752 A1DE102024210752 A1DE 102024210752A1DE-102024210752-A1

Abstract

The invention relates to a method for detecting (10) the road surface condition (12) of a road surface (16), comprising the steps of providing a tire sensor system (22) comprising at least one tire sensor (20) associated with a tire (26) of a vehicle (14) traveling on the road surface (16) and a position determination system (24) of the vehicle (14), providing sensor measurement data (42) of the tire sensor system (22) during a journey of the vehicle (14) on the road surface (16), providing position data (48) of the position determination system (24) associated with the sensor measurement data (42), determining (52) at least one road surface parameter (54) indicating the road surface condition (12) depending on the sensor measurement data (42), assigning (56) the position data (48) to the at least one road surface parameter (54), and transmitting (66) the at least one road surface parameter (54) and the associated Position data (48) for retrievable storage on a data storage device (68). The invention further relates to a road surface condition detection system (18).

Inventors

  • Florian Guffarth

Assignees

  • Robert Bosch Gesellschaft mit beschränkter Haftung

Dates

Publication Date
20260513
Application Date
20241108

Claims (10)

  1. Method (10) for detecting the road surface condition (12) of a road surface (16), comprising the steps: providing a tire sensor system (22) comprising at least one tire sensor (20) assigned to a tire (26) of a vehicle (14) traveling on the road surface (16) and a position determination system (24) of the vehicle (14); providing sensor measurement data (42) of the tire sensor system (22) while the vehicle (14) is traveling on the road surface (16); providing position data (48) of the position determination system (24) assigned to the sensor measurement data (42); determining (52) at least one road surface parameter (54) indicating the road surface condition (12) depending on the sensor measurement data (42); assigning (56) the position data (48) to the at least one road surface parameter (54); transmitting (66) the at least one road surface parameter (54) and the associated position data (48) for retrievable storage on a data storage device (68).
  2. Procedure for recording (10) according to Claim 1 , characterized in that the data storage device (68) comprises a temporary data storage unit (70) for retrievable intermediate storage of the at least one road parameter (54) with the position data (48).
  3. Procedure for recording (10) according to Claim 1 or 2 , characterized in that the data storage device (68) comprises a cloud storage (72) for retrievable storage.
  4. Procedure for recording (10) according to Claim 2 and 3 , characterized in that the at least one road parameter (54) is first transferred with the position data (48) to the temporary data storage unit (70) and subsequently to the cloud storage (72).
  5. Method for recording (10) according to one of the preceding claims, characterized in that the data storage device (68) is equipped for access by at least one other vehicle (73) for retrieving the at least one stored road parameter (54) with the position data (48).
  6. Procedure for recording (10) according to Claim 5 , characterized in that the access by the other vehicle (73) is dependent on a planned or existing position (50) of the other vehicle (73) with respect to the position data (48) assigned to the at least one road parameter (54).
  7. Method for detection (10) according to one of the preceding claims, characterized in that the at least one roadway parameter (54) is calculated depending on an air pressure in the tire (26) measured by the at least one tire sensor (20).
  8. Method for recording (10) according to one of the preceding claims, characterized in that the determination (52) of the roadway parameter (54) is carried out by an algorithm (62) which receives the sensor measurement data (42) as input data (60).
  9. Road surface detection system (18) for carrying out a detection method (10) according to one of the preceding claims, comprising: a tire sensor system (22) for determining (52) the sensor measurement data (42) of a vehicle (14), a position determination system (24) for determining (52) the position data (48) assigned to the sensor measurement data (42), a processing unit (51) for determining (52) the at least one road surface parameter (54) and for assigning (56) the position data (48) to the road surface parameter (54), a transmission unit (64) for transmitting (66) the at least one road surface parameter (54) with the position data (48) for retrievable storage on a data storage device (68).
  10. Road surface condition monitoring system (18) according to Claim 9 , characterized in that the road surface condition detection system (18) further comprises the data storage device (68).

Description

The invention relates to a method for detecting road surface conditions according to claim 1. Furthermore, the invention relates to a road surface condition detection system. State of the art In DE 10 2014 004 167 A1 is a method for detecting a road surface condition, in which the energy introduced into the vehicle by suspension dampers when driving on the road surface is measured and the road surface condition is determined depending on the measured introduced energy. Disclosure of the invention According to the present invention, a method for detecting road surface conditions with the features of claim 1 is proposed. This can increase driving safety for vehicles traveling on the road. The vehicles can incorporate the detected information about the road surface conditions into route planning and/or driving. The vehicle can be a motor vehicle or a truck. The vehicle can be a two-wheeled vehicle, in particular a motorcycle. The vehicle can be an electric vehicle. The tire sensor system can have multiple tire sensors assigned to individual tires. The tire sensors can rotate with their respective tires. The tire sensors can be located within the tires. A first tire sensor can be located on a first tire, particularly on the left or right side of a front or rear axle, and a second tire sensor can be located on a second tire, particularly on the right or left side of the front or rear axle. The sensor measurement data can include initial sensor measurement data from the first tire sensor and second sensor measurement data from the second tire sensor. If the sensor measurement data includes initial sensor measurement data from a first tire sensor on the left side of the front or rear axle and second sensor measurement data from a second tire sensor on the right side of the front or rear axle, the road surface condition in the lateral direction, for example, the width of a transverse groove, can be determined. At least one road surface parameter can be determined based on the initial and second sensor measurement data. At least one road surface parameter can be determined by comparing the initial and second sensor measurement data. By comparing the first and second sensor measurements, the influence of the vehicle's chassis and/or tires can be taken into account. The tire sensor can include a pressure sensor and optionally an acceleration sensor and/or a temperature sensor. The sensor measurement data can be pressure readings from the pressure sensor and/or acceleration readings from the acceleration sensor. The determination of at least one road surface parameter can be performed based on the pressure readings and/or the acceleration readings. The sensor measurement data can be in the time domain or frequency domain. The road surface condition can include a road surface condition or a road surface property of the roadway. The road surface parameter can specify the presence and, optionally, the severity and/or size of a road surface irregularity, roughness, hazard, surface texture, contamination, covering, and/or damage. The road surface parameter can be assigned to a position or a position-locatable area of the road surface. Determining road surface parameters can include calculating them based on sensor data. It can also involve processing the sensor data, such as filtering and/or performing a Fast Fourier Transform. Furthermore, the calculation might include peak detection, frequency analysis, or other signal processing methods. For example, a road surface parameter indicating damage can be determined if a peak in the frequency spectrum of the processed sensor data is present or exceeds a predefined amplitude. The at least one determined road surface parameter can be further assigned at least one weather parameter relating to the weather conditions in the vehicle's environment. The weather parameter can be calculated using weather information provided by an information service, such as a weather service, and/or sensor information provided by at least one sensor in the vehicle, such as a rain sensor and/or a temperature sensor. This allows the road surface to be assessed. A parameter, such as one indicating a hazard due to aquaplaning on the road surface, can be linked to weather parameters. This allows the significance of the road surface parameter to be determined in relation to the weather parameter. Each road surface parameter can be further assigned at least one time parameter. The time parameter can specify a time of day and/or season. This allows the road surface parameter, which, for example, indicates a hazard due to an icy patch on the road, to be linked to the time parameter. This makes it possible to specify the significance of the road surface parameter as a function of the time parameter. The positioning system can include at least one positioning sensor, in particular a GPS sensor. The data storage device can store at least one road parameter together with the associated position data and, if appli