A vehicle seat belt detection method, device, system, vehicle and detection equipment

Abstract

The application provides a vehicle safety belt detection method, device and system, a vehicle and a detection equipment, and relates to the technical field of wireless communication. The method comprises the following steps: obtaining the arrival angle and power of a safety belt detection signal corresponding to a first seat on a target vehicle, wherein the arrival angle is the included angle between the propagation direction of the safety belt detection signal and the horizontal plane when the safety belt detection signal arrives at the first position on the target vehicle; and determining whether the safety belt corresponding to the first seat is in a correct wearing state according to the arrival angle and power of the safety belt detection signal. The scheme of the application solves the problem that the prior art cannot accurately detect whether the safety belt is correctly and effectively used.

Description

Technical Field

[0001] This invention relates to the field of wireless technology, and in particular to a method, apparatus, system, vehicle, and testing equipment for detecting vehicle seat belts. Background Technology

[0002] With increased public awareness of traffic safety, most private cars are now equipped with seatbelt detection devices. When the system detects that the driver or passenger is not wearing a seatbelt, the car will issue an alarm. This device effectively reminds and encourages drivers and passengers to wear seatbelts, significantly improving safety.

[0003] In existing seatbelt detection devices, sensors are typically installed in the seatbelt plugs. When the seatbelt plug is not inserted into the plug, the sensor sends a plug-not-inserted signal to the vehicle's infotainment system. When the vehicle detects that a passenger has sat down and the car has started moving, the infotainment system begins to issue a seatbelt warning. When the seatbelt plug is inserted into the sensor-equipped plug, the sensor signal changes, and the sensor sends a plug-insertion confirmation signal to the infotainment system, at which point the infotainment system stops issuing the seatbelt warning.

[0004] However, because the sensors cannot recognize the plug inserted into the seatbelt socket, if the driver or passenger inserts a fake seatbelt plug, the sensor will be misled and transmit a signal that the seatbelt is fastened. Furthermore, existing detection methods cannot verify whether the seatbelt is being used correctly. For example, even if the driver or passenger has the seatbelt plug in, but has not fastened the seatbelt in front of them as required, the vehicle's system will still register the seatbelt as fastened. Therefore, existing seatbelt detection methods are inaccurate in detecting whether seatbelts are being used correctly and effectively, presenting significant loopholes and posing certain safety hazards to users. Summary of the Invention

[0005] The purpose of this invention is to provide a method, device, system, vehicle, and testing equipment for detecting vehicle seat belts, which solves the problem that existing technologies cannot accurately detect whether seat belts are being used correctly and effectively.

[0006] To achieve the above objectives, embodiments of the present invention provide a vehicle seatbelt detection method, comprising:

[0007] The angle of arrival and power of the seat belt detection signal corresponding to the first seat on the target vehicle are obtained. The angle of arrival is the angle between the propagation direction of the seat belt detection signal and the horizontal plane when the seat belt detection signal reaches the first position on the target vehicle.

[0008] Based on the angle of arrival and power of the seat belt detection signal, it is determined whether the seat belt corresponding to the first seat is in a correctly worn state.

[0009] Optionally, the seat belt detection signal includes: a seat belt plug signal and a seat belt fabric signal.

[0010] Optionally, determining whether the seatbelt corresponding to the first seat is correctly worn based on the angle of arrival and power of the seatbelt detection signal includes:

[0011] Determine whether the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and determine whether the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition;

[0012] If the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition, it is determined that the seat belt corresponding to the first seat is in the correct wearing state.

[0013] The first preset condition is: α s1 -α0≤α1≤α s1 +α0, and p s1 -p0≤p1≤p s1 +p0;

[0014] The second preset condition is: α s2 ≤α2≤α s1 , and p s2 -p0≤p2≤p s2 +p0;

[0015] Where, α s1 This indicates the third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; α0 represents the preset angle error value; α1 represents the first angle of arrival; p s1 This indicates the third power of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p s2 This indicates the fourth power of the seatbelt fabric signal when the seatbelt corresponding to the first seat is in the correct wearing state; p0 represents the preset power error value; p1 represents the first power; α s2 p1 represents the fourth angle of arrival of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p2 represents the second power.

[0016] Optionally, the angle of arrival of the seatbelt detection signal corresponding to the first seat is obtained according to a first formula, which is:

[0017] Where α represents the angle of arrival of the seat belt detection signal; c represents the speed of light; λ represents the phase difference of the seat belt detection signal received by different antennas in the array antenna set at the first position; f represents the frequency of the seat belt detection signal; and L represents the distance between the antennas in the array antenna.

[0018] Optionally, the method further includes:

[0019] Determine whether a user is sitting in the first seat;

[0020] If it is determined that a user is sitting in the first seat and the seat belt corresponding to the first seat is not properly worn, a prompt message is sent to the user.

[0021] To achieve the above objectives, embodiments of the present invention provide a vehicle seatbelt detection system, comprising:

[0022] The first signal transmitting module is installed in the seat belt plug corresponding to the first seat in the vehicle;

[0023] The second signal transmitting module is installed in the seat belt fabric corresponding to the first seat;

[0024] A detection module is installed in the instrument panel system of the vehicle, and the detection module includes an array antenna and a signal processing unit;

[0025] The first signal transmitting module and the second signal transmitting module are used to send the seat belt detection signal corresponding to the first seat to the array antenna;

[0026] The array antenna is used to receive the seat belt detection signal and send the seat belt detection signal to the signal processing unit;

[0027] The signal processing unit is used to receive the seat belt detection signal and determine whether the seat belt corresponding to the first seat is in a correct wearing state based on the angle of arrival and power of the seat belt detection signal.

[0028] To achieve the above objectives, embodiments of the present invention provide a vehicle including the vehicle seatbelt detection system described above.

[0029] To achieve the above objectives, embodiments of the present invention provide a vehicle seatbelt detection device, comprising:

[0030] The acquisition module is used to acquire the angle of arrival and power of the seat belt detection signal corresponding to the first seat on the target vehicle. The angle of arrival is the angle between the propagation direction of the seat belt detection signal and the horizontal plane when the seat belt detection signal reaches the first position on the target vehicle.

[0031] The processing module is used to determine whether the seat belt corresponding to the first seat is in a correctly worn state based on the angle of arrival and power of the seat belt detection signal.

[0032] Optionally, the seat belt detection signal includes: a seat belt plug signal and a seat belt fabric signal.

[0033] Optionally, the processing module includes:

[0034] The first processing unit is used to determine whether the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and to determine whether the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition.

[0035] The second processing unit is used to determine that the seat belt corresponding to the first seat is in a correct wearing state when the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition.

[0036] The first preset condition is: α s1 -α0≤α1≤α s1 +α0, and p s1 -p0≤p1≤p s1 +p0;

[0037] The second preset condition is: α s2 ≤α2≤α s1 , and p s2 -p0≤p2≤p s2 +p0;

[0038] Where, α s1 This indicates the third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; α0 represents the preset angle error value; α1 represents the first angle of arrival; p s1 This indicates the third power of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p s2 This indicates the fourth power of the seatbelt fabric signal when the seatbelt corresponding to the first seat is in the correct wearing state; p0 represents the preset power error value; p1 represents the first power; α s2 p1 represents the fourth angle of arrival of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p2 represents the second power.

[0039] Optionally, the angle of arrival of the seatbelt detection signal corresponding to the first seat is obtained according to a first formula, which is:

[0040] Where α represents the angle of arrival of the seat belt detection signal; c represents the speed of light; λ represents the phase difference of the seat belt detection signal received by different antennas in the array antenna set at the first position; f represents the frequency of the seat belt detection signal; and L represents the distance between the antennas in the array antenna.

[0041] Optionally, the device further includes:

[0042] The first processing module is used to determine whether a user is sitting in the first seat;

[0043] The second processing module is used to send a prompt message to the user when it is determined that a user is sitting in the first seat and the seat belt corresponding to the first seat is not properly worn.

[0044] To achieve the above objectives, embodiments of the present invention provide a detection device, including a processor and a transceiver, wherein the processor is used for:

[0045] The angle of arrival and power of the seat belt detection signal corresponding to the first seat on the target vehicle are obtained. The angle of arrival is the angle between the propagation direction of the seat belt detection signal and the horizontal plane when the seat belt detection signal reaches the first position on the target vehicle.

[0046] Based on the angle of arrival and power of the seat belt detection signal, it is determined whether the seat belt corresponding to the first seat is in a correctly worn state.

[0047] Optionally, the seat belt detection signal includes: a seat belt plug signal and a seat belt fabric signal.

[0048] Optionally, when the processor determines whether the seat belt corresponding to the first seat is correctly worn based on the angle of arrival and power of the seat belt detection signal, it is specifically used to:

[0049] Determine whether the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and determine whether the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition;

[0050] If the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition, it is determined that the seat belt corresponding to the first seat is in the correct wearing state.

[0051] The first preset condition is: α s1 -α0≤α1≤α s1 +α0, and p s1 -p0≤p1≤p s1 +p0;

[0052] The second preset condition is: α s2 ≤α2≤α s1 , and p s2 -p0≤p2≤p s2 +p0;

[0053] Where, α s1 This indicates the third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; α0 represents the preset angle error value; α1 represents the first angle of arrival; p s1 This indicates the third power of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p s2 This indicates the fourth power of the seatbelt fabric signal when the seatbelt corresponding to the first seat is in the correct wearing state; p0 represents the preset power error value; p1 represents the first power; α s2 p1 represents the fourth angle of arrival of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p2 represents the second power.

[0054] Optionally, the angle of arrival of the seatbelt detection signal corresponding to the first seat is obtained according to a first formula, which is:

[0055] Where α represents the angle of arrival of the seat belt detection signal; c represents the speed of light; λ represents the phase difference of the seat belt detection signal received by different antennas in the array antenna set at the first position; f represents the frequency of the seat belt detection signal; and L represents the distance between the antennas in the array antenna.

[0056] Optionally, the processor is further configured to:

[0057] Determine whether a user is sitting in the first seat;

[0058] If it is determined that a user is sitting in the first seat and the seat belt corresponding to the first seat is not properly worn, a prompt message is sent to the user.

[0059] To achieve the above objectives, embodiments of the present invention provide a detection device, including a transceiver, a processor, a memory, and a program or instructions stored in the memory and executable on the processor; when the processor executes the program or instructions, it implements the vehicle seat belt detection method as described above.

[0060] To achieve the above objectives, embodiments of the present invention provide a readable storage medium having a program or instructions stored thereon, which, when executed by a processor, implement the steps in the vehicle seatbelt detection method as described above.

[0061] The beneficial effects of the above-mentioned technical solution of the present invention are as follows:

[0062] The method of this invention can determine whether the seat belt corresponding to the first seat is in a correct wearing state by obtaining the angle of arrival and power of the seat belt detection signal of the first seat in the target vehicle. This allows for warning the user or taking safety control measures for the vehicle when the user is wearing the seat belt incorrectly. The detection results are more accurate and can avoid the detection loopholes in existing detection schemes when the seat belt is incorrectly worn, ensuring that the seat belt is used correctly and effectively, thereby improving the safety of driving and riding in a car. Attached Figure Description

[0063] Figure 1 This is a flowchart of a vehicle seatbelt detection method according to an embodiment of the present invention;

[0064] Figure 2 This is a schematic diagram illustrating the angle of arrival measurement principle of the vehicle seatbelt detection method according to an embodiment of the present invention.

[0065] Figure 3 This is one of the top views of the vehicle seat belt detection system according to an embodiment of the present invention;

[0066] Figure 4 This is a second top view of the vehicle seatbelt detection system according to an embodiment of the present invention;

[0067] Figure 5 This is a structural diagram of a vehicle seatbelt detection device according to an embodiment of the present invention;

[0068] Figure 6 This is a structural diagram of the detection device according to an embodiment of the present invention;

[0069] Figure 7 This is a structural diagram of a detection device according to another embodiment of the present invention. Detailed Implementation

[0070] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0071] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0072] In various embodiments of the present invention, it should be understood that the sequence number of each process described below does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0073] In addition, the terms "system" and "network" are often used interchangeably in this article.

[0074] In the embodiments provided in this application, it should be understood that "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean determining B solely based on A; B can also be determined based on A and / or other information.

[0075] like Figures 1 to 4 As shown, an embodiment of the present invention provides a method for detecting vehicle seat belts, comprising:

[0076] Step 101: Obtain the angle of arrival and power of the seat belt detection signal corresponding to the first seat 1 on the target vehicle. The angle of arrival is the angle between the propagation direction of the seat belt detection signal and the horizontal plane when the seat belt detection signal reaches the first position on the target vehicle.

[0077] It should be noted that a first signal transmitting module can be installed in the seatbelt plug 2 corresponding to the first seat 1 in the vehicle, and a second signal transmitting module can be installed in the seatbelt fabric 3 corresponding to the first seat 1. The first and second signal transmitting modules are used to send seatbelt detection signals. Specifically, the first location can be the detection module 6 in the vehicle's dashboard system. The detection module 6 can specifically include an array antenna 8 and a signal processing unit 9.

[0078] The array antenna 8 is used to receive the seat belt detection signal and send the seat belt detection signal to the signal processing unit 9. The signal processing unit 9 is used to receive the seat belt detection signal and determine whether the seat belt corresponding to the first seat is in the correct wearing state based on the angle of arrival and power of the seat belt detection signal.

[0079] Step 102: Determine whether the seat belt corresponding to the first seat 1 is in the correct wearing state based on the angle of arrival and power of the seat belt detection signal.

[0080] Here, power refers to the signal power of the seat belt detection signal received by the detection module 6.

[0081] In this embodiment, by acquiring the angle of arrival and power of the seat belt detection signal corresponding to the first seat 1 in the target vehicle, it can be determined whether the seat belt corresponding to the first seat 1 is in a correct wearing state. This allows for a warning to the user or the implementation of safety control measures for the vehicle when the user wears the seat belt incorrectly. The detection results are more accurate and can avoid the detection loopholes in existing detection schemes when seat belts are worn incorrectly. This ensures that the seat belt is used correctly and effectively, thereby improving vehicle driving safety.

[0082] Optionally, the seat belt detection signal includes: a seat belt plug signal and a seat belt fabric signal.

[0083] As an optional embodiment, the seat belt plug signal can be transmitted by a first signal transmitting module disposed in the seat belt plug 2 corresponding to the first seat 1; the seat belt fabric signal can be transmitted by a second signal transmitting module disposed in the seat belt fabric 3 corresponding to the first seat 1.

[0084] Optionally, determining whether the seat belt corresponding to the first seat 1 is in a correctly worn state based on the angle of arrival and power of the seat belt detection signal includes:

[0085] Determine whether the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and determine whether the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition;

[0086] If the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition, it is determined that the seat belt corresponding to the first seat 1 is in the correct wearing state.

[0087] The first preset condition is: α s1 -α0≤α1≤α s1 +α0, and p s1 -p0≤p1≤p s1 +p0; The second preset condition is: α s2 ≤α2≤α s1 , and p s2 -p0≤p2≤p s2 +p0;

[0088] Where, α s1This indicates the third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; α0 represents the preset angle error value; α1 represents the first angle of arrival; p s1 This indicates the third power of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p s2 This indicates the fourth power of the seatbelt fabric signal when the seatbelt corresponding to the first seat is in the correct wearing state; p0 represents the preset power error value; p1 represents the first power; α s2 p1 represents the fourth angle of arrival of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p2 represents the second power.

[0089] It should be noted that when the seatbelt is worn correctly, the seatbelt plug 2 is inserted into the seatbelt socket 4 (i.e., the seatbelt latch). It is understood that the vehicle seatbelt detection method provided by this invention determines whether the seatbelt plug 2 corresponding to the first seat 1 is inserted into the corresponding seatbelt socket 4 by judging whether the first angle of arrival α1 and the first power p1 of the seatbelt plug signal meet a first preset condition. Alternatively, existing plug insertion detection methods can be used to determine whether the seatbelt plug 2 corresponding to the first seat 1 is inserted into the corresponding seatbelt socket 4. For example, a sensor can be installed in the seatbelt socket 4. When the seatbelt plug 2 is inserted into the seatbelt socket 4, the sensor can send (e.g., to the vehicle's infotainment system) a signal indicating that the plug is inserted.

[0090] In an optional embodiment of the present invention, such as Figure 3 As shown in the figure, user 7 (i.e., passenger) on the left is wearing a seat belt correctly, and the seat belt plug 2 is inserted into the seat belt socket 4. User 7 on the right is not wearing a seat belt, and the seat belt plug 2 is located at the seat belt guide plate 5.

[0091] Here, the angle of arrival of the seatbelt plug signal emitted from the seatbelt plug 2 corresponding to the first seat 1 when the seatbelt corresponding to the first seat 1 is in the correct wearing state is defined as the fourth angle of arrival (i.e., α). s2 The angle of arrival of the seatbelt fabric signal emitted from the seatbelt fabric 3 corresponding to the first seat is defined as the second angle of arrival (i.e., α2); the angle of arrival of the seatbelt plug signal emitted from the seatbelt plug 2 at the seatbelt guide plate 5 when the seatbelt corresponding to the first seat 1 is not worn is defined as the third angle of arrival (i.e., α2). s1 ). Combination Figure 3 Analysis shows that when the seat belt corresponding to the first seat 1 is worn correctly, α2 should satisfy: α s2 ≤α2≤α s1 .

[0092] In another optional embodiment of the present invention, such as Figure 4 As shown, user 7 on the right is wearing the seatbelt correctly, while user 7 on the left is not wearing the seatbelt correctly. Here, the signal power of the seatbelt fabric signal reaching the detection module when the seatbelt corresponding to the first seat is in the correct wearing state is defined as the fourth power (i.e., p). s2 Analysis shows that, although Figure 4 The seatbelt plug 2 corresponding to the first seat 1 on the left side is correctly inserted into the seatbelt socket 4. However, because the second signal transmitting module located in the seatbelt fabric 3 corresponding to the first seat 1 on the left side is obstructed, there is a lack of an effective direct path, resulting in a lower signal power of the seatbelt fabric signal reaching the detection module compared to p. s2 It will decrease significantly. Therefore, the second power (i.e., p2) of the seatbelt fabric signal can be compared with p. s2 The size comparison is used to determine whether the seatbelt fabric 3 is obstructed, and then combined with the angle of arrival to determine whether the seatbelt is worn correctly. It can be understood that this specifically involves comparing the corresponding Received Signal Strength Indicator (RSSI).

[0093] Specifically, if the first angle of arrival α1 and the first power p1 of the seatbelt plug signal respectively satisfy (first preset condition): α s1 -α0≤α1≤α s1 +α0, and p s1 -p0≤p1≤p s1 If +p0 is selected, it can be determined that the seat belt plug 2 is correctly inserted into the seat belt socket 4; if not, it can be determined that the seat belt corresponding to the first seat 1 is not worn correctly.

[0094] If the second angle of arrival α2 and the second power p2 of the seatbelt fabric signal respectively satisfy (the second preset condition): α s2 ≤α2≤α s1 , and p s2 -p0≤p2≤p s2 If +p0 is obtained, it can be determined that the seat belt fabric is not obscured; if not, it can be determined that the seat belt corresponding to the first seat 1 is not worn correctly.

[0095] If the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition, then it is determined that the seat belt corresponding to the first seat 1 is in the correct wearing state.

[0096] In this embodiment, the angle of arrival and power of the seat belt detection signal can be compared with the relevant angle of arrival and power data when the seat belt is worn correctly to perform seat belt wearing detection. This can effectively detect whether the seat belt is worn correctly and avoid the detection loopholes in existing detection schemes when the seat belt is worn incorrectly, ensuring that the seat belt is used correctly and effectively, thereby improving vehicle driving safety.

[0097] Optionally, the angle of arrival of the seatbelt detection signal corresponding to the first seat 1 is obtained according to a first formula, which is:

[0098] Where α represents the angle of arrival of the seat belt detection signal; c represents the speed of light; λ represents the phase difference of the seat belt detection signal received by different antennas in the array antenna 8 set at the first position; f represents the frequency of the seat belt detection signal; and L represents the distance between the antennas in the array antenna 8.

[0099] like Figure 2 As shown, the seatbelt detection signal arrives at the array antenna 8 in the detection module 6 at an angle α. The path difference between the seatbelt detection signal and different antennas in the array antenna 8 is Δd, and the distance between different antennas in the array antenna 8 is L. Then Δd can be represented by the phase difference of the seatbelt detection signal received by different antenna elements. Confirmed, phase difference According to the formula: It is determined that the distance difference Δd can be calculated using the formula: Sure.

[0100] It should be noted that the seatbelt detection signals received by different antenna arrays can be calculated by the RF transceiver unit and data analysis and processing unit to obtain Δφ. Therefore, the angle of arrival α can be obtained by the following formula:

[0101]

[0102] Substituting λ = c / f into Then we can obtain the first formula, which enables the measurement of the angle of the seat belt detection signal. The first formula is expressed as:

[0103]

[0104] Optionally, the method further includes:

[0105] Determine whether user 7 is sitting in the first seat 1;

[0106] If it is determined that user 7 is sitting in the first seat 1 and the seat belt corresponding to the first seat 1 is not properly worn, a prompt message is sent to user 7.

[0107] Here, a seat pressure sensor installed on the first seat 1 can be used to determine whether user 7 is sitting in the first seat 1.

[0108] In this embodiment, if it is determined that a user 7 is seated in the first seat 1 of the vehicle, but the seat belt corresponding to the first seat 1 is not properly worn, a prompt message can be sent to the user 7 to remind them of safety. A control signal can also be output to the vehicle's infotainment system, triggering the system to implement safety controls such as speed limiting and alarms. Furthermore, a vehicle safety anomaly alarm can be sent to a relevant IoT platform via 5G wireless vehicle-to-everything (V2X) signals, enabling the IoT platform to take relevant management measures based on the V2X signals to ensure vehicle driving safety.

[0109] The vehicle seat belt detection method of this embodiment can determine whether the seat belt corresponding to the first seat in the target vehicle is in a correct wearing state by acquiring the angle of arrival and power of the seat belt detection signal. This allows for warnings to be given to the user or safety control measures to be taken for the vehicle when the user is wearing the seat belt incorrectly. The detection results are more accurate and can avoid the detection loopholes in existing detection schemes when seat belts are worn incorrectly. This ensures that the seat belt is used correctly and effectively, avoids incorrect seat belt wearing methods, and thus improves vehicle driving safety.

[0110] like Figures 3-4 As shown, an embodiment of the present invention provides a vehicle seatbelt detection system, comprising:

[0111] The first signal transmitting module is installed in the seat belt plug 2 corresponding to the first seat 1 in the vehicle;

[0112] The second signal transmitting module is disposed in the seat belt fabric 3 corresponding to the first seat 1;

[0113] A detection module is installed in the instrument panel system of the vehicle, and the detection module includes an array antenna 8 and a signal processing unit 9;

[0114] The first signal transmitting module and the second signal transmitting module are used to send the seat belt detection signal corresponding to the first seat 1 to the array antenna 8;

[0115] The array antenna 8 is used to receive the seat belt detection signal and send the seat belt detection signal to the signal processing unit 9;

[0116] The signal processing unit 9 is used to receive the seat belt detection signal and determine whether the seat belt corresponding to the first seat 1 is in a correct wearing state based on the angle of arrival and power of the seat belt detection signal.

[0117] In this embodiment, by respectively setting the first signal transmitting module and the second signal transmitting module in the seat belt plug and seat belt fabric corresponding to the first seat 1 in the vehicle, a seat belt detection signal can be sent to the detection module in the instrument panel system of the vehicle. After receiving the seat belt detection signal, the array antenna 8 in the detection module will send the seat belt detection signal to the signal processing unit 9 in the detection module. After receiving the seat belt detection signal, the signal processing unit 9 can determine whether the seat belt corresponding to the first seat 1 is in a correct wearing state according to the angle of arrival and power of the seat belt detection signal, so as to warn the user 7 or take safety control measures for the vehicle when the user 7 wears the seat belt incorrectly. The detection result is more accurate, which can avoid the detection loopholes of the existing detection scheme when the seat belt is incorrectly worn, ensure that the seat belt is used correctly and effectively, avoid incorrect seat belt wearing methods, and thus improve the safety of driving and riding in the car.

[0118] Optionally, the vehicle seatbelt detection system further includes:

[0119] The first processing module is used to determine whether user 7 is sitting in the first seat 1;

[0120] The second processing module is used to send a prompt message to user 7 when it is determined that user 7 is sitting in the first seat 1 and the seat belt corresponding to the first seat 1 is not properly worn.

[0121] Here, a seat pressure sensor installed on the first seat 1 can be used to determine whether user 7 is sitting in the first seat 1.

[0122] In this embodiment, if it is determined that a user 7 is sitting in the first seat 1 of the vehicle, but the seat belt corresponding to the first seat 1 is not properly worn, a prompt message can be sent to the user 7 to remind the user 7 of safety. A control signal can also be output to the vehicle's infotainment system to trigger the infotainment system to perform safety controls such as speed limiting and alarms on the vehicle.

[0123] The vehicle seatbelt detection system of this embodiment can be equipped with a signal transmitting module and a detection module for seatbelt detection signals in the vehicle. The detection module can then determine whether the seatbelt corresponding to the first seat is correctly worn based on the angle of arrival and power of the seatbelt detection signal. This allows for warnings to the user or safety control measures to be taken for the vehicle when the user is wearing the seatbelt incorrectly. The detection results are more accurate and can avoid the detection loopholes in existing detection schemes when seatbelts are worn incorrectly. This ensures that seatbelts are used correctly and effectively, avoids incorrect seatbelt wearing methods, and thus improves vehicle driving safety.

[0124] like Figures 3-4 As shown, an embodiment of the present invention provides a vehicle including the vehicle seat belt detection system described above.

[0125] In this embodiment, the vehicle can be equipped with a signal transmitting module and a detection module for seat belt detection signals. The detection module can then determine whether the seat belt corresponding to the first seat is correctly worn based on the angle of arrival and power of the seat belt detection signal. This allows for warnings to the user or safety control measures to be taken when the user is incorrectly wearing the seat belt. The detection results are more accurate and can avoid detection loopholes in existing detection schemes when seat belts are incorrectly worn. This ensures that seat belts are used correctly and effectively, avoids incorrect seat belt wearing methods, and thus improves vehicle driving safety.

[0126] like Figure 5 As shown, an embodiment of the present invention provides a vehicle seatbelt detection device, comprising:

[0127] The acquisition module 510 is used to acquire the angle of arrival and power of the seat belt detection signal corresponding to the first seat on the target vehicle. The angle of arrival is the angle between the propagation direction of the seat belt detection signal and the horizontal plane when the seat belt detection signal reaches the first position on the target vehicle.

[0128] The processing module 520 is used to determine whether the seat belt corresponding to the first seat is in a correctly worn state based on the angle of arrival and power of the seat belt detection signal.

[0129] In this embodiment, by acquiring the angle of arrival and power of the seat belt detection signal corresponding to the first seat in the target vehicle, it can be determined whether the seat belt corresponding to the first seat is in a correct wearing state. This allows for a warning to the user or the implementation of safety control measures for the vehicle when the user is incorrectly wearing the seat belt. The detection results are more accurate and can avoid the detection loopholes in existing detection schemes when seat belts are incorrectly worn, ensuring that the seat belt is used correctly and effectively, thereby improving vehicle driving safety.

[0130] Optionally, the seat belt detection signal includes: a seat belt plug signal and a seat belt fabric signal.

[0131] Optionally, the processing module 520 includes:

[0132] The first processing unit is used to determine whether the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and to determine whether the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition.

[0133] The second processing unit is used to determine that the seat belt corresponding to the first seat is in a correct wearing state when the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition.

[0134] The first preset condition is: α s1 -α0≤α1≤α s1 +α0, and p s1 -p0≤p1≤p s1 +p0;

[0135] The second preset condition is: α s2 ≤α2≤α s1 , and p s2 -p0≤p2≤p s2 +p0;

[0136] Where, α s1 This indicates the third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; α0 represents the preset angle error value; α1 represents the first angle of arrival; p s1 This indicates the third power of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p s2 This indicates the fourth power of the seatbelt fabric signal when the seatbelt corresponding to the first seat is in the correct wearing state; p0 represents the preset power error value; p1 represents the first power; α s2 p1 represents the fourth angle of arrival of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p2 represents the second power.

[0137] Optionally, the angle of arrival of the seatbelt detection signal corresponding to the first seat is obtained according to a first formula, which is:

[0138] Where α represents the angle of arrival of the seat belt detection signal; c represents the speed of light; λ represents the phase difference of the seat belt detection signal received by different antennas in the array antenna set at the first position; f represents the frequency of the seat belt detection signal; and L represents the distance between the antennas in the array antenna.

[0139] Optionally, the device further includes:

[0140] The first processing module is used to determine whether a user is sitting in the first seat;

[0141] The second processing module is used to send a prompt message to the user when it is determined that a user is sitting in the first seat and the seat belt corresponding to the first seat is not properly worn.

[0142] It should be noted that the vehicle seat belt detection device provided in this embodiment of the invention can implement all the method steps implemented in the above-described vehicle seat belt detection method embodiment, and can achieve the same technical effect. Here, the parts that are the same as those in the method embodiment and the beneficial effects will not be described in detail.

[0143] like Figure 6 As shown, a detection device 600 according to an embodiment of the present invention includes a processor 610 and a transceiver 620, wherein the processor 610 is used for:

[0144] The angle of arrival and power of the seat belt detection signal corresponding to the first seat on the target vehicle are obtained. The angle of arrival is the angle between the propagation direction of the seat belt detection signal and the horizontal plane when the seat belt detection signal reaches the first position on the target vehicle.

[0145] Based on the angle of arrival and power of the seat belt detection signal, it is determined whether the seat belt corresponding to the first seat is in a correctly worn state.

[0146] In this embodiment, by acquiring the angle of arrival and power of the seat belt detection signal corresponding to the first seat in the target vehicle, it can be determined whether the seat belt corresponding to the first seat is in a correct wearing state. This allows for a warning to the user or the implementation of safety control measures for the vehicle when the user is incorrectly wearing the seat belt. The detection results are more accurate and can avoid the detection loopholes in existing detection schemes when seat belts are incorrectly worn, ensuring that the seat belt is used correctly and effectively, thereby improving vehicle driving safety.

[0147] Optionally, the seat belt detection signal includes: a seat belt plug signal and a seat belt fabric signal.

[0148] Optionally, when the processor 610 determines whether the seat belt corresponding to the first seat is correctly worn based on the angle of arrival and power of the seat belt detection signal, it is specifically used for:

[0149] Determine whether the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and determine whether the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition;

[0150] If the first angle of arrival α1 and the first power p1 of the seat belt plug signal meet the first preset condition, and the second angle of arrival α2 and the second power p2 of the seat belt fabric signal meet the second preset condition, it is determined that the seat belt corresponding to the first seat is in the correct wearing state.

[0151] The first preset condition is: α s1 -α0≤α1≤α s1 +α0, and p s1 -p0≤p1≤p s1 +p0;

[0152] The second preset condition is: α s2 ≤α2≤α s1 , and p s2 -p0≤p2≤p s2 +p0;

[0153] Where, α s1 This indicates the third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; α0 represents the preset angle error value; α1 represents the first angle of arrival; p s1 This indicates the third power of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p s2 This indicates the fourth power of the seatbelt fabric signal when the seatbelt corresponding to the first seat is in the correct wearing state; p0 represents the preset power error value; p1 represents the first power; α s2 p1 represents the fourth angle of arrival of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; p2 represents the second power.

[0154] Optionally, the angle of arrival of the seatbelt detection signal corresponding to the first seat is obtained according to a first formula, which is:

[0155] Where α represents the angle of arrival of the seat belt detection signal; c represents the speed of light; λ represents the phase difference of the seat belt detection signal received by different antennas in the array antenna set at the first position; f represents the frequency of the seat belt detection signal; and L represents the distance between the antennas in the array antenna.

[0156] Optionally, the processor 610 is further configured to:

[0157] Determine whether a user is sitting in the first seat;

[0158] If it is determined that a user is sitting in the first seat and the seat belt corresponding to the first seat is not properly worn, a prompt message is sent to the user.

[0159] It should be noted that the detection device provided in this embodiment of the invention can implement all the method steps implemented in the above-described vehicle seat belt detection method embodiment and can achieve the same technical effect. Therefore, the parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0160] Another embodiment of the present invention provides a detection device, such as... Figure 7 As shown, it includes a transceiver 710, a processor 700, a memory 720, and a program or instructions stored in the memory 720 and executable on the processor 700; when the processor 700 executes the program or instructions, it implements the above-described vehicle seat belt detection method.

[0161] The transceiver 710 is used to receive and send data under the control of the processor 700.

[0162] Among them, Figure 7 In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 700 and memory represented by memory 720. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 710 can be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium. For different detection devices, the user interface 730 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0163] The processor 700 is responsible for managing the bus architecture and general processing, while the memory 720 can store the data used by the processor 700 during operation.

[0164] This invention provides a readable storage medium storing a program or instructions. When executed by a processor, the program or instructions implement the steps of the vehicle seatbelt detection method described above and achieve the same technical effect. To avoid repetition, further details are omitted here. The computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0165] It should be further noted that the terminals described in this specification include, but are not limited to, smartphones, tablets, etc., and many of the functional components described are referred to as modules in order to emphasize the independence of their implementation.

[0166] In this embodiment of the invention, the module can be implemented in software so that it can be executed by various types of processors. For example, an identified executable code module may include one or more physical or logical blocks of computer instructions, which may be constructed as objects, procedures, or functions. Nevertheless, the executable code of the identified module does not need to be physically located together, but may include different instructions stored in different bits, which, when logically combined, constitute the module and achieve the module's intended purpose.

[0167] In practice, an executable code module can be a single instruction or many instructions, and can even be distributed across multiple different code segments, different programs, and across multiple memory devices. Similarly, operational data can be identified within the module and can be implemented in any suitable form and organized within any suitable type of data structure. This operational data can be collected as a single dataset or distributed across different locations (including different storage devices), and can exist, at least in part, solely as electronic signals within the system or network.

[0168] When a module can be implemented using software, considering the current level of hardware technology, modules that can be implemented in software can be implemented using hardware circuits by those skilled in the art to achieve the corresponding functions, without considering cost. These hardware circuits include conventional very-large-scale integrated circuits (VLSI) or gate arrays, as well as existing semiconductors such as logic chips and transistors, or other discrete components. Modules can also be implemented using programmable hardware devices, such as field-programmable gate arrays, programmable array logic, and programmable logic devices.

[0169] The exemplary embodiments described above are with reference to the accompanying drawings. Many different forms and embodiments are feasible without departing from the spirit and teachings of the invention. Therefore, the invention should not be construed as limiting the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided to make the invention complete and convey the scope of the invention to those skilled in the art. In these drawings, component dimensions and relative dimensions may be exaggerated for clarity. The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. As used herein, unless clearly indicated otherwise, the singular forms “a,” “an,” and “the” are intended to include all such forms. It will be further understood that the terms “comprising” and / or “including”, when used in this specification, indicate the presence of the stated features, integers, steps, operations, components, and / or elements, but do not exclude the presence or addition of one or more other features, integers, steps, operations, components, and / or groups thereof. Unless otherwise indicated, when stated, a range of values ​​includes the upper and lower limits of the range and any subranges in between.

[0170] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for detecting vehicle seat belts, characterized in that, include: The angle of arrival and power of the seat belt detection signal corresponding to the first seat on the target vehicle are obtained. The angle of arrival is the angle between the propagation direction of the seat belt detection signal and the horizontal plane when the seat belt detection signal reaches the first position on the target vehicle. Based on the angle of arrival and power of the seat belt detection signal, determine whether the seat belt corresponding to the first seat is in a correct wearing state; The seat belt detection signal includes: seat belt plug signal and seat belt fabric signal; The step of determining whether the seat belt corresponding to the first seat is in a correctly worn state based on the angle of arrival and power of the seat belt detection signal includes: Determine the first angle of arrival of the seatbelt plug signal. and first power Whether the first preset condition is met, and the second angle of arrival of the seat belt fabric signal is determined. Second power Does the second preset condition meet? The first angle of arrival of the seatbelt plug signal and first power The first preset condition is met, and the second angle of arrival of the seatbelt fabric signal is satisfied. Second power If the second preset condition is met, it is determined that the seat belt corresponding to the first seat is in the correct wearing state; The first preset condition is: ≤ ≤ ,and ≤ ≤ The second preset condition is: ≤ ≤ ,and ≤ ≤ in, The third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; This indicates the preset angle error value; Indicates the first angle of arrival; The third power of the seatbelt plug signal indicates that the seatbelt corresponding to the first seat is in the correct wearing state; The fourth power of the seatbelt fabric signal indicates that the seatbelt corresponding to the first seat is in the correct wearing state; This indicates the preset power error value; This represents the first power; The fourth angle of arrival of the seatbelt plug signal indicates that the seatbelt corresponding to the first seat is in the correct wearing state; This indicates the second power.

2. The method according to claim 1, characterized in that, The angle of arrival of the seatbelt detection signal corresponding to the first seat is obtained according to a first formula, which is: ; in, This indicates the angle of arrival of the seatbelt detection signal; Represents the speed of light; λ represents the phase difference of the seat belt detection signal received by different antennas in the array antenna set at the first position; f represents the frequency of the seat belt detection signal; and L represents the distance between the antennas in the array antenna.

3. The method according to claim 1, characterized in that, Also includes: Determine whether a user is sitting in the first seat; If it is determined that a user is sitting in the first seat and the seat belt corresponding to the first seat is not properly worn, a prompt message is sent to the user.

4. A vehicle seatbelt detection system, characterized in that, include: The first signal transmitting module is installed in the seat belt plug corresponding to the first seat in the vehicle; The second signal transmitting module is installed in the seat belt fabric corresponding to the first seat; A detection module is installed in the instrument panel system of the vehicle, and the detection module includes an array antenna and a signal processing unit; The first signal transmitting module and the second signal transmitting module are used to send the seat belt detection signal corresponding to the first seat to the array antenna; The array antenna is used to receive the seat belt detection signal and send the seat belt detection signal to the signal processing unit; The signal processing unit is used to receive the seat belt detection signal and determine whether the seat belt corresponding to the first seat is in a correct wearing state based on the angle of arrival and power of the seat belt detection signal. The seat belt detection signal includes: seat belt plug signal and seat belt fabric signal; When the signal processing unit determines whether the seat belt corresponding to the first seat is correctly worn based on the angle of arrival and power of the seat belt detection signal, it is specifically used for: Determine the first angle of arrival of the seatbelt plug signal. and first power Whether the first preset condition is met, and the second angle of arrival of the seat belt fabric signal is determined. Second power Does the second preset condition meet? The first angle of arrival of the seatbelt plug signal and first power The first preset condition is met, and the second angle of arrival of the seatbelt fabric signal is satisfied. Second power If the second preset condition is met, it is determined that the seat belt corresponding to the first seat is in the correct wearing state; The first preset condition is: ≤ ≤ ,and ≤ ≤ The second preset condition is: ≤ ≤ ,and ≤ ≤ in, The third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; This indicates the preset angle error value; Indicates the first angle of arrival; This indicates the third power of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; The fourth power of the seatbelt fabric signal indicates that the seatbelt corresponding to the first seat is in the correct wearing state; This indicates the preset power error value; This represents the first power; This indicates the fourth angle of arrival of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; This indicates the second power.

5. A vehicle, characterized in that, Includes the vehicle seatbelt detection system as described in claim 4.

6. A vehicle seatbelt detection device, characterized in that, include: The acquisition module is used to acquire the angle of arrival and power of the seat belt detection signal corresponding to the first seat on the target vehicle. The angle of arrival is the angle between the propagation direction of the seat belt detection signal and the horizontal plane when the seat belt detection signal reaches the first position on the target vehicle. The processing module is used to determine whether the seat belt corresponding to the first seat is in a correct wearing state based on the angle of arrival and power of the seat belt detection signal; The seat belt detection signal includes: seat belt plug signal and seat belt fabric signal; The processing module includes: The first processing unit is used to determine the first angle of arrival of the seatbelt plug signal. and first power Whether the first preset condition is met, and the second angle of arrival of the seat belt fabric signal is determined. Second power Does the second preset condition meet? The second processing unit is used at the first angle of arrival of the seatbelt plug signal. and first power The first preset condition is met, and the second angle of arrival of the seatbelt fabric signal is satisfied. Second power If the second preset condition is met, it is determined that the seat belt corresponding to the first seat is in the correct wearing state; The first preset condition is: ≤ ≤ ,and ≤ ≤ The second preset condition is: ≤ ≤ ,and ≤ ≤ in, The third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; This indicates the preset angle error value; Indicates the first angle of arrival; This indicates the third power of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; The fourth power of the seatbelt fabric signal indicates that the seatbelt corresponding to the first seat is in the correct wearing state; This indicates the preset power error value; This represents the first power; This indicates the fourth angle of arrival of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; This indicates the second power.

7. A testing device, characterized in that, include: Transceiver and processor; the processor is used for: The angle of arrival and power of the seat belt detection signal corresponding to the first seat on the target vehicle are obtained. The angle of arrival is the angle between the propagation direction of the seat belt detection signal and the horizontal plane when the seat belt detection signal reaches the first position on the target vehicle. Based on the angle of arrival and power of the seat belt detection signal, determine whether the seat belt corresponding to the first seat is in a correct wearing state; The seat belt detection signal includes: seat belt plug signal and seat belt fabric signal; When the processor determines whether the seat belt corresponding to the first seat is correctly worn based on the angle of arrival and power of the seat belt detection signal, it is specifically used for: Determine the first angle of arrival of the seatbelt plug signal. and first power Whether the first preset condition is met, and the second angle of arrival of the seat belt fabric signal is determined. Second power Does the second preset condition meet? The first angle of arrival of the seatbelt plug signal and first power The first preset condition is met, and the second angle of arrival of the seatbelt fabric signal is satisfied. Second power If the second preset condition is met, it is determined that the seat belt corresponding to the first seat is in the correct wearing state; The first preset condition is: ≤ ≤ ,and ≤ ≤ The second preset condition is: ≤ ≤ ,and ≤ ≤ in, The third angle of arrival of the seatbelt plug signal when the seatbelt plug corresponding to the first seat is located at the seatbelt guide plate position; This indicates the preset angle error value; Indicates the first angle of arrival; The third power of the seatbelt plug signal indicates that the seatbelt corresponding to the first seat is in the correct wearing state; The fourth power of the seatbelt fabric signal indicates that the seatbelt corresponding to the first seat is in the correct wearing state; This indicates the preset power error value; This represents the first power; This indicates the fourth angle of arrival of the seatbelt plug signal when the seatbelt corresponding to the first seat is in the correct wearing state; This indicates the second power.

8. A testing device, comprising: A transceiver, a processor, a memory, and a program or instructions stored in the memory and executable on the processor; characterized in that, when the processor executes the program or instructions, it implements the vehicle seatbelt detection method as described in any one of claims 1 to 3.

9. A readable storage medium having a program or instructions stored thereon, characterized in that, When the program or instructions are executed by the processor, they implement the steps in the vehicle seat belt detection method as described in any one of claims 1 to 3.

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