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JP-2026514278-A - Use of vehicle UWB system

JP2026514278AJP 2026514278 AJP2026514278 AJP 2026514278AJP-2026514278-A

Abstract

A method is proposed for using a vehicle UWB (ultra-wideband) system, which includes one or more UWB sensors (720) and a registered series of UWB devices (301, 302, 303). The series of UWB devices (301, 302, 303) includes a first UWB device (301) and a second UWB device (303). For each UWB device, the method includes periodically receiving a positioning program, including a first positioning and a second positioning, via one or more UWB sensors (S10). The method includes checking the reliability of the execution of the first positioning and second positioning programs (S20), and, if the check fails, correcting the program (S30). The method provides an improved use of the vehicle UWB system (700).

Inventors

  • オヌール、オグズ
  • リアド、ベルホーマ

Assignees

  • ヴァレオ、コンフォート、アンド、ドライビング、アシスタンス

Dates

Publication Date
20260508
Application Date
20231107
Priority Date
20221108

Claims (10)

  1. A method for using a vehicle UWB system (700) which includes one or more UWB sensors (720) and a registered series of UWB devices (301, 302, 303), wherein the series of UWB devices (301, 302, 303) includes a first UWB device (301) and a second UWB device (303), and the method is For each UWB device, a positioning program including a first positioning (314) and a second positioning (334) is periodically received by one or more UWB sensors (S10), where the first positioning (314) is the positioning of the first UWB device (301) programmed over a first time interval, and the second positioning (334) is the positioning of the second UWB device (303) programmed over a second time interval, and the first time interval and the second time interval have a non-zero common portion in at least one period, and A method comprising periodically checking the reliability of the execution of the programs for the first positioning (314) and the second positioning (334) for each of the at least one of the periods (S20), and correcting the programs if the check fails (S30).
  2. Each positioning includes UWB transmission, and the check is, Determining the temporal distance (503, 505, 507) between the UWB transmissions (411, 412, 413, 414, 415) of the first positioning (314) and the UWB transmissions (431, 432, 433, 434, 435) of the second positioning (334) (S21), and The method according to claim 1, further comprising checking (S22) that each of the determined temporal distances (503, 505, 507) is greater than at least a predetermined temporal distance value.
  3. Modifying the program if the check fails (S30) Determining the preferred UWB device (301) from the first UWB device (301) and the second UWB device (303) (S31), and, The method according to claim 1 or 2, further comprising programming the positioning of the priority UWB device (301) (S32).
  4. The method according to any one of claims 1 to 3, wherein the predetermined value of the temporal distance is greater than 250 microseconds and/or less than 1 millisecond.
  5. The method according to any one of claims 1 to 4, wherein the positioning program is performed for a period of less than 10 seconds.
  6. To detect new UWB devices, and The method according to any one of claims 1 to 5, comprising repeating the reception and check of the program for the new UWB device.
  7. After the check, if the verification is successful, the positioning is performed according to the received program (S40); if the check fails, the positioning is performed according to the modified program (S30), and The method according to any one of claims 1 to 6, further comprising determining the position of each of the UWB devices from the positioning performed (S50).
  8. A vehicle UWB system (700) comprising one or more UWB sensors (720) and configured to be used according to the method described in any one of claims 1 to 7.
  9. A UWB sensor (720) for a vehicle UWB system (700) configured for use in the system according to the method described in any one of claims 1 to 7.
  10. A computer program, when executed by a processor, comprising program code instructions for performing the method described in any one of claims 1 to 7.

Description

This disclosure relates to the use of vehicle UWB (ultra-wideband) radio systems. Currently, there are vehicles equipped with a UWB system that includes one or more UWB sensors mounted on the vehicle. Typically, such a UWB system can register a set of UWB devices and then determine the position of each UWB device from positioning between each UWB device and the system's UWB sensors. For this purpose, existing methods of using such a UWB system usually involve periodically receiving positioning programs for each UWB device, and these positionings are then used to determine the position of each UWB device. Each positioning is typically programmed over a certain time interval, during which the programmed positioning includes UWB transmission between one of the UWB devices and each of the UWB sensors. If two positionings are programmed to overlap when performed—that is, if the programmed time intervals for the two positionings have a non-zero overlap—existing methods usually involve canceling the programming of one of the two positionings. This reduces the risk of interference between the UWB transmissions of the two positionings. However, such cancellation reduces the number of positionings ultimately performed for the UWB device from which one of the positionings was canceled. As a result, the accuracy and sensitivity of positioning for that UWB device decreases. Therefore, an improved vehicle UWB system is needed. Therefore, a method is proposed to use a vehicle UWB system that includes one or more UWB sensors and registers a series of UWB devices. The series of UWB devices includes a first UWB device and a second UWB device. For each UWB device, the method includes periodic reception of a positioning program, including a first positioning and a second positioning, from one or more UWB sensors. The first positioning is the positioning of the first UWB device programmed over a first time interval. The second positioning is the positioning of the second UWB device programmed over a second time interval. The first and second time intervals have a non-zero intersection in at least one period. For each of at least one period, the method includes periodic checking the reliability of the execution of the first and second positioning programs and correcting the programs if the check fails. Each positioning may include a UWB transmission. The check may include determining the temporal distance between the UWB transmission of the first positioning and the UWB transmission of the second positioning, and checking that each of the determined temporal distances is greater than at least a predetermined temporal distance value. Modifying the program if the check fails may include determining the preferred UWB device from the first and second UWB devices, and programming the positioning of the preferred UWB device. The predetermined time distance value can be greater than 250 microseconds and/or less than 1 millisecond. The positioning program can be completed in less than 10 seconds. This method may include detecting a new UWB device and repeatedly receiving and checking the program for the new UWB device. This method may include, after a check, performing positioning according to the received program if the check is successful, or according to the modified program if the check fails, and determining the position of each UWB device from the performed positioning. A vehicle UWB system is also proposed. The UWB system includes one or more UWB sensors. The system is configured for use in accordance with this method. A UWB sensor for such vehicle UWB systems is also proposed. The UWB sensor is configured for use with the system according to this method. A computer program is also proposed. The computer program includes program code instructions for executing this method when the program is executed by a processor. A non-limiting embodiment will be described with reference to the following diagram. Figure 1 shows a flowchart of an example of this method. Figure 2 shows an example of multiple positioning programs. Figure 3 shows an example of positioning performed within a time interval consisting of a series of time slots. Figure 4 shows a first embodiment of the implementation of this method. Figure 5 shows a second embodiment of the implementation of this method.Figure 6 shows a second embodiment of the implementation of this method. Figure 7 shows an example of vehicle use based on positioning programmed using this method. Figure 8 shows an example of positioning of a UWB device using one or more UWB sensors. Figure 9 shows an example of determining the number of time slots for each series of time slots for the UWB device. Figure 10 shows an example of a vehicle UWB system. A method is proposed for using a vehicle UWB system that includes one or more UWB sensors and registers a series of UWB devices. The series of UWB devices includes a first UWB device and a second UWB device. For each UWB device, the method includes periodi