Method for determining a spatial position

Abstract

The invention relates to a method for determining a spatial position of at least one sensor device (2) by means of the signal strength measured via two receivers (3, 4).

Description

[0001] 202406281

[0002] 1

[0003] Description

[0004] Methods for determining a spatial position

[0005] The invention relates to a method for determining a spatial position of at least one sensor device and a system.

[0006] The invention relates to a method for determining a spatial position of at least one sensor device.

[0007] The procedure consists of the following steps:

[0008] - Providing at least one sensor device, wherein the at least one sensor device is intended for the sensory detection of a physically describable quantity and is intended for the emission of sensor signals;

[0009] - Providing a transmission device, wherein the transmission device is designed to receive signals, for example, those sent by the at least one sensor device, and wherein the transmission device is designed to send a transmission signal depending on a signal received by means of the transmission device; - Providing a receiving device, wherein the receiving device is designed to receive signals and, in particular, to receive a transmission signal sent by means of the transmission device;

[0010] -Emitting sensor signals by means of at least one sensor device;

[0011] - Receiving the sensor signals using the transmission device;

[0012] - Determining the signal strengths of the sensor signals transmitted by means of the at least one sensor device and received by means of the transmission device;202406281

[0013] 2

[0014] - Providing an evaluation device, wherein the evaluation device is intended for evaluating the signals received by means of the transmission device and for evaluating the signals received by means of the receiving device.

[0015] The sensor signals are, for example, electromagnetic signals.

[0016] The physically describable quantity that can be detected by the at least one sensor device is, for example, a physical state variable such as temperature or pressure. The at least one sensor device is, for example, a temperature sensor and / or a pressure sensor. The at least one sensor device is specifically designed to detect a physically describable quantity of a vehicle tire. The at least one sensor device can, for example, be located inside or on a vehicle tire. The vehicle tire can be, for example, a passenger car tire, a truck tire, or a two-wheeler tire.

[0017] The transmission device is, in particular, a device suitable for receiving electromagnetic signals and transmitting electromagnetic signals in accordance with the Bluetooth protocol.

[0018] The receiving device is, for example, a telematics device.

[0019] To determine the signal strength of the sensor signals transmitted by the at least one sensor device and received by the transmission device, the transmission device, for example, has a measuring component. The measuring component is suitable for determining the signal strength. 202406281

[0020] 3

[0021] For example, a measuring component can be designed such that a signal strength depends on an electromagnetic field strength that is related to the electromagnetic sensor signal, or on the amplitude of the electromagnetic sensor signal.

[0022] The evaluation device is in particular a device for electronic data processing, for example a computer device.

[0023] Methods for determining the spatial position of at least one sensor device are known from the prior art.

[0024] It is also known from the prior art that a method for determining a spatial position of at least one sensor device comprises the following steps:

[0025] - Providing at least one sensor device, wherein the at least one sensor device is intended for the sensory detection of a physically describable quantity and is intended for the emission of sensor signals;

[0026] - Providing a transmission device, wherein the transmission device is designed to receive signals, for example, those sent by the at least one sensor device, and wherein the transmission device is designed to send a transmission signal depending on a signal received by means of the transmission device; - Providing a receiving device, wherein the receiving device is designed to receive signals and, in particular, to receive a transmission signal sent by means of the transmission device;

[0027] -Emitting sensor signals by means of at least one sensor device;

[0028] - Receiving the sensor signals using the transmission device; 202406281

[0029] 4

[0030] - Determining the signal strengths of the sensor signals transmitted by means of the at least one sensor device and received by means of the transmission device;

[0031] - Providing an evaluation device, wherein the evaluation device is intended for evaluating the signals received by means of the transmission device and for evaluating the signals received by means of the receiving device.

[0032] The methods known from the prior art for determining the spatial position of at least one sensor device might not be optimally designed. For example, the methods known from the prior art for determining the spatial position of at least one sensor device might be designed in such a way that checking or correcting the spatial position of the at least one sensor device could involve a comparatively high level of technical effort.

[0033] The invention is therefore based on the objective of providing an improved method for determining a spatial position of at least one sensor device, wherein in particular a check or correction of the spatial position of the at least one sensor device can be carried out with sufficient reliability and with a comparatively low technical effort.

[0034] The problem posed by the invention is solved by the fact that the method comprises the following further steps:

[0035] - Receiving the sensor signals using the receiving device;

[0036] - Determining the signal strengths of the sensor signals transmitted by the at least one sensor device and received by the receiving device; - Determining the spatial position of the at least one sensor device as a function of the signal strengths of the sensor signals transmitted by the at least one sensor device and received by the receiving device; 202406281

[0037] 5

[0038] The transmission device receives sensor signals and, depending on the signal strengths of the sensor signals sent by means of the at least one sensor device and received by means of the receiving device, the evaluation device.

[0039] This determination of the spatial position is carried out, for example, using a model, whereby the model uniquely links characteristic signal strengths with spatial distances and spatial positions.

[0040] To determine the signal strength of the sensor signals transmitted by the at least one sensor device and received by the receiving device, the receiving device, for example, has a further measuring component. This further measuring component is suitable for determining the signal strength. The further measuring component can, for example, be designed such that it measures the signal strength as a function of an electromagnetic field strength related to the electromagnetic sensor signal or the amplitude of the electromagnetic sensor signal.

[0041] Determining a spatial position can, in particular in cases where the at least one sensor device is used within a vehicle tire, refer to the spatial position of the at least one sensor device on the vehicle. Furthermore, determining the spatial position of the at least one sensor device can involve determining its position relative to the spatial position of the transmission device and / or relative to the spatial position of the receiving device.

[0042] Due to the inventive circumstance whereby the method comprises the following further steps:

[0043] - Receiving the sensor signals using the receiving device; 202406281

[0044] 6

[0045] - Determining the signal strengths of the sensor signals transmitted by the at least one sensor device and received by the receiving device using the receiving device; - Determining a spatial position of the at least one sensor device as a function of the signal strengths of the sensor signals transmitted by the at least one sensor device and received by the transmission device and as a function of the signal strengths of the sensor signals transmitted by the at least one sensor device and received by the receiving device using the evaluation device, the determination of the spatial position of the at least one sensor device is enabled and carried out as a function of two technically independent process steps.Any measurement errors or determination errors, which, for example, were made on the basis of a sole determination of the signal strengths using the transmission device, can therefore be checked and thus confirmed or rejected and, moreover, corrected.

[0046] This provides an improved method for determining the spatial position of at least one sensor device.

[0047] The invention further relates to a system suitable for carrying out a method according to the invention, comprising at least one sensor device, wherein the at least one sensor device is provided for the sensorial detection of a physically describable quantity and is provided for the emission of sensor signals, and comprising a transmission device, wherein the transmission device is provided for receiving signals that have been sent, for example, by the at least one sensor device, and wherein the transmission device is provided for sending a transmission signal depending on a signal received by means of the transmission device, and comprising 202406281

[0048] 7

[0049] a receiving device, wherein the receiving device is designed to receive signals and in particular to receive a transmission signal sent by means of the transmission device, and comprising an evaluation device, wherein the evaluation device is designed to evaluate the signals received by means of the transmission device and to evaluate the signals received by means of the receiving device.

[0050] Further advantageous embodiments of the present invention are the subject of the dependent claims.

[0051] According to a preferred embodiment of the present invention, the spatial position of the at least one sensor device is determined as a function of a spatial position of the transmission device and a spatial position of the receiving device.

[0052] According to a further preferred embodiment of the present invention, the spatial position of the at least one sensor device is determined by means of triangulation. In particular, the spatial position of the at least one sensor device is determined by means of triangulation as a function of a spatial position of the transmission device and / or a spatial position of the receiving device.

[0053] According to a further preferred embodiment of the present invention, the spatial position of the at least one sensor device is determined by means of a statistical analysis of the signal strengths of the sensor signals transmitted by the at least one sensor device and received by the transmission device, and of the signal strengths of the sensor signals transmitted by the at least one sensor device and received by the receiving device. Within the framework of the statistical analysis of the signal strengths, a statistical assignment of 202406281

[0054] 8

[0055] The expected value of a given signal strength at a given spatial position is determined and, in particular, carried out.

[0056] According to a further preferred embodiment of the present invention, the spatial position of the at least one sensor device is determined by means of the following steps:

[0057] - Determining a spatial distance from the at least one sensor device to the transmission device as a function of the signal strengths of the sensor signals sent by means of the at least one sensor device and received by means of the transmission device using the evaluation device;

[0058] - Determining a spatial distance from the at least one sensor device to the receiving device as a function of the signal strengths of the sensor signals transmitted by the at least one sensor device and received by the receiving device using the evaluation device;

[0059] - Determining the spatial position of the at least one sensor device as a function of the spatial distance from the at least one sensor device to the transmission device and the spatial distance from the at least one sensor device to the receiving device by means of the evaluation device.

[0060] According to a further preferred embodiment of the present invention, in the case where the at least one sensor device is a sensor device for a vehicle tire and the at least one sensor device is arranged in or on a vehicle tire of a vehicle, the at least one sensor device only transmits such sensor signals that can be received by the receiving device when the vehicle is stationary. 202406281

[0061] 9

[0062] Due to the inventive circumstance whereby, in the case where the at least one sensor device is a sensor device for a vehicle tire and the at least one sensor device is arranged in or on a vehicle tire of a vehicle, the at least one sensor device only sends such sensor signals that can be received by the receiving device when the vehicle is stationary, the spatial position of the at least one sensor device can be determined with higher reliability and accuracy, since in particular a relative spatial movement of the at least one sensor device in the area of ​​the vehicle with respect to the transmission device and the receiving device is not given, because, for example, the vehicle tires of the vehicle do not rotate when the vehicle is stationary.

[0063] According to a further preferred embodiment of the present invention, in the case where the at least one sensor device is a sensor device for a vehicle tire and the at least one sensor device is arranged in or on a vehicle tire, the at least one sensor device transmits electromagnetic sensor signals, wherein the electromagnetic frequency of the electromagnetic sensor signals and / or a transmission protocol according to which the electromagnetic sensor signals are transmitted depend on an operating state of the vehicle. The operating state of the vehicle can be, for example, a state in which the vehicle is in motion or is stationary. The at least one sensor device can, for example, be configured to transmit sensor signals in the radio frequency range and / or according to the Bluetooth protocol.

[0064] The inventive circumstance, wherein in the case where the at least one sensor device is a sensor device for a vehicle tire and the at least one sensor device is arranged in or on a vehicle tire of a vehicle, which has at least one 202406281

[0065] 10

[0066] If a sensor device sends electromagnetic sensor signals, and the electromagnetic frequency of the electromagnetic sensor signals and / or the transmission protocol according to which the electromagnetic sensor signals are sent depend on an operating state of the vehicle, an event-related setting or specification of the frequency of the electromagnetic sensor signals and / or the transmission protocol can be carried out.

[0067] According to a further preferred embodiment of the present invention, the transmission device and the receiving device are arranged spatially directly next to each other or, in particular, have a maximum spatial distance from each other of, for example, 100 cm, 90 cm, 80 cm, 70 cm, 60 cm, 50 cm, 40 cm, 30 cm, 20 cm, 10 cm or 1 cm.

[0068] According to a further preferred embodiment of the present invention, the transmission device and the receiving device are suitable for receiving electromagnetic signals at different frequencies and / or according to different transmission protocols and / or according to different transmission standards. For example, the method according to the invention, according to a preferred embodiment of the present invention, may comprise the following steps:

[0069] - Providing at least one sensor device, wherein the at least one sensor device is intended for the sensory detection of a physically describable quantity and is intended for the emission of sensor signals;

[0070] - Providing the transmission device, wherein the transmission device is intended for receiving electromagnetic signals at a first frequency and / or according to a first transmission protocol, which have been sent, for example, by the at least one sensor device, and wherein the transmission device is intended for a202406281

[0071] 11

[0072] The transmission of a transmission signal is provided for depending on a signal received by means of the transmission device;

[0073] - Providing a receiving device, wherein the receiving device is designed to receive electromagnetic signals at a second frequency and / or in accordance with a second transmission protocol and, in particular, to receive a transmission signal emitted by means of the transmission device;

[0074] -Emitting first sensor signals by means of the at least one sensor device, wherein the first sensor signals are electromagnetic signals transmitted at a first frequency and / or according to a first transmission protocol; -Emitting second sensor signals by means of the at least one sensor device, wherein the second sensor signals are electromagnetic signals transmitted at a second frequency and / or according to a second transmission protocol;

[0075] - Receiving the first sensor signals using the transmission device; - Determining the signal strengths of the first sensor signals transmitted by the at least one sensor device and received by the transmission device using the transmission device;

[0076] - Providing an evaluation device, wherein the evaluation device is intended for evaluating the signals received by means of the transmission device and for evaluating the signals received by means of the receiving device;

[0077] - Receiving the second sensor signals by means of the receiving device; - Determining the signal strengths of the second sensor signals transmitted by means of the at least one sensor device and received by means of the receiving device using the receiving device; - Determining a spatial position of the at least one sensor device as a function of the signal strengths of the signals transmitted by means of the at least one sensor device and received by means of the receiving device.

[0078] 12

[0079] The transmission device receives the first sensor signals, and the evaluation device processes the second sensor signals, which are transmitted by the at least one sensor device and received by the receiving device, depending on the signal strengths of the second sensor signals. The first and second frequencies are different from each other, and / or the first transmission protocol is different from the second. One example of a transmission protocol could be the Bluetooth protocol.

[0080] Further advantages, features and details, to which the scope of the invention is not limited, will now be described in more detail with reference to the drawings.

[0081] It shows:

[0082] Fig. 1: A schematic representation of a method according to the invention in one embodiment;

[0083] Fig. 2: A schematic representation of a system according to the invention in one embodiment.

[0084] Figure 1 schematically illustrates a method according to the invention for determining a spatial position of at least one sensor device.

[0085] Step A initiates the procedure for determining the spatial position of at least one sensor device.

[0086] In step B, at least one sensor device is provided, wherein the at least one sensor device is intended for the sensory detection of a physically describable quantity and is intended for the emission of sensor signals. 202406281

[0087] 13

[0088] In step C, a transmission device is provided, wherein the transmission device is intended to receive signals that have been sent, for example, by the at least one sensor device, and wherein the transmission device is intended to send a transmission signal depending on a signal received by means of the transmission device.

[0089] In step D, a receiving device is provided, wherein the receiving device is intended to receive signals and in particular to receive a transmission signal sent by means of the transmission device.

[0090] In step E, sensor signals are sent using at least one sensor device.

[0091] In step F, the sensor signals are received using the transmission device.

[0092] In step G, the signal strengths of the sensor signals sent by means of the at least one sensor device and received by means of the transmission device are determined using the transmission device.

[0093] In step H, an evaluation device is provided, wherein the evaluation device is intended for evaluating the signals received by means of the transmission device and for evaluating the signals received by means of the receiving device.

[0094] In step I, the sensor signals are received using the

[0095] Receiving device. 202406281

[0096] 14

[0097] In step J, the signal strengths of the sensor signals sent by means of the at least one sensor device and received by means of the receiving device are determined using the receiving device.

[0098] In step K, the spatial position of the at least one sensor device is determined depending on the signal strengths of the sensor signals sent by the at least one sensor device and received by the transmission device, and depending on the signal strengths of the sensor signals sent by the at least one sensor device and received by the receiving device, using the evaluation device.

[0099] Step L completes the process.

[0100] Figure 2 schematically illustrates a system 1 according to the invention in one embodiment.

[0101] System 1 is suitable for carrying out a method. System 1 comprises at least one sensor device 2, wherein the sensor device 2 is designed for the sensory detection of a physically describable quantity and is designed for the emission of sensor signals, and a transmission device 3, wherein the transmission device 3 is designed for the reception of signals that have been emitted, for example, by the at least one sensor device 2, and wherein the transmission device 3 is designed for the transmission of a transmission signal depending on a signal received by means of the transmission device 3, and a receiving device 4, wherein the receiving device 4 is designed for the reception of signals and, in particular, for the reception of a transmission signal emitted by means of the transmission device 3, and an evaluation device 5.wherein the evaluation device 5 is provided for evaluating the signals received by means of the transmission device 3 and for evaluating the signals received by means of the receiving device 4, on.202406281,

[0102] 15

[0103] As shown in Figure 1, the at least one sensor device 2 is arranged on a vehicle tire 6. The vehicle tire 6 is shown schematically in radial section and is rotatable about an axis of rotation 7 in a direction of rotation 8. 202406281

[0104] 16

[0105] Reference symbol list

[0106] 1 system

[0107] 2 Sensor device

[0108] 3 Transmission device 4 Receiving device 5 Evaluation device

[0109] 6 vehicle tires

[0110] 7. Axis of rotation

[0111] 8 Direction of rotation

Claims

202406281 17 Patent claims 1. Method for determining a spatial position of at least one sensor device (2), comprising the following steps: - Providing at least one sensor device (2), wherein the at least one sensor device (2) is provided for the sensorial detection of a physically describable quantity and is provided for the emission of sensor signals; - Providing a transmission device (3), wherein the transmission device (1) is provided for receiving signals which, for example, have been sent by the at least one sensor device (2), and wherein the transmission device (3) is provided for sending a transmission signal depending on a signal received by means of the transmission device (3); - Providing a receiving device (4), wherein the receiving device (4) is provided for receiving signals and, in particular, for receiving a transmission signal sent by means of the transmission device (3); -Emitting sensor signals by means of the at least one sensor device (2); - Receiving the sensor signals by means of the transmission device (3); - Determining the signal strengths of the sensor signals transmitted by means of the at least one sensor device (2) and received by means of the transmission device (3) using the transmission device (3); - Providing an evaluation device (5), wherein the evaluation device (5) is provided for evaluating the signals received by means of the transmission device (3) and for evaluating the signals received by means of the receiving device (4);202406281 18 Characterized by the following steps: - Receiving the sensor signals by means of the receiving device (4); - Determining the signal strengths of the sensor signals transmitted by means of the at least one sensor device (2) and received by means of the receiving device (4) using the receiving device (4); - Determining a spatial position of the at least one sensor device (2) as a function of the signal strengths of the sensor signals transmitted by means of the at least one sensor device (2) and received by means of the transmission device (3) and as a function of the signal strengths of the sensor signals transmitted by means of the at least one sensor device (2) and received by means of the receiving device (4) using the evaluation device (4).

2. Method according to claim 1, characterized in that the spatial position of the at least one sensor device (2) is determined by means of triangulation.

3. Method according to claim 1, characterized in that the spatial position of the at least one sensor device (2) is determined by means of a statistical analysis of the signal strengths of the sensor signals transmitted by means of the at least one sensor device (2) and received by means of the transmission device (3) and the signal strengths of the sensor signals transmitted by means of the at least one sensor device (2) and received by means of the receiving device (4).

4. Method according to claim 1, characterized in that the spatial position of the at least one sensor device (2) is determined by means of the following steps: - Determining a spatial distance from the at least one sensor device (2) to the transmission device (3) depending on the signal strengths of the signals transmitted by means of the at least one sensor device (2) and by means of the 202406281 19 Transmission device (3) received sensor signals by means of the evaluation device (5); - Determining a spatial distance from the at least one sensor device (2) to the receiving device (4) depending on the signal strengths of the sensor signals sent by means of the at least one sensor device (2) and received by means of the receiving device (4) using the evaluation device (5); - Determining the spatial position of the at least one sensor device (2) as a function of the spatial distance from the at least one sensor device (2) to the transmission device (3) and the spatial distance from the at least one sensor device (2) to the receiving device (4) by means of the evaluation device (5).

5. Method according to one of the preceding claims, characterized in that, in the case where the at least one sensor device (2) is a sensor device (2) for a vehicle tire (6) and the at least one sensor device (2) is arranged in or on a vehicle tire (6) of a vehicle, the at least one sensor device (2) only sends such sensor signals that can be received by the receiving device (4) when the vehicle is stationary.

6. Method according to one of the preceding claims, characterized in that, in the case where the at least one sensor device (2) is a sensor device (2) for a vehicle tire (6) and the at least one sensor device (2) is arranged in or on a vehicle tire (6) of a vehicle, the at least one sensor device (2) sends electromagnetic sensor signals, wherein an electromagnetic frequency of the electromagnetic sensor signals and / or a transmission protocol according to the202406281 20 The electromagnetic sensor signals sent depend on the vehicle's operating state.

7. System (1) suitable for carrying out a method according to one of the preceding claims, comprising at least one sensor device (2), wherein the at least one sensor device (2) is provided for the sensorial detection of a physically describable quantity and is provided for the emission of sensor signals, and comprising a transmission device (3), wherein the transmission device (3) is provided for receiving signals which, for example, have been sent by the at least one sensor device (2), and wherein the transmission device (3) is provided for sending a transmission signal depending on a signal received by means of the transmission device (3), and comprising a receiving device (4), wherein the receiving device (4) is provided for receiving signals and, in particular, for receiving a transmission signal emitted by means of the transmission device (3).and comprising an evaluation device (5), wherein the evaluation device (5) is provided for evaluating the signals received by means of the transmission device (3) and for evaluating the signals received by means of the receiving device (4).

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