Seat occupation detection method and device of vehicle, vehicle and storage medium

Abstract

The invention discloses a seat occupation detection method and device for a vehicle, the vehicle and a storage medium, and the method comprises the steps: obtaining a real-time state of an infrared signal in a seat when the vehicle is in a low-voltage power-on state; wherein the real-time state comprises a normal transceiving state and an abnormal interruption state; if the real-time state is a normal transceiving state, determining that the seat is in a non-occupying state; wherein under the condition that the seat is in the non-occupying state, a cushion of the seat is in a conventional state; if the real-time state is an abnormal interruption state, determining that the seat is in an occupied state; wherein under the condition that the seat is in the occupied state, a cushion of the seat is in a sunken state. According to the technical scheme, the problem that detection errors are prone to occurring in seat occupation detection in the vehicle is solved, and the accuracy of seat occupation detection in the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to a vehicle seat occupancy detection method, device, vehicle and computer-readable storage medium. Background Art

[0002] In the related art, the occupancy detection of the vehicle adopts a pressure sensor. The change of the weight on the seat causes the deformation or resistance change of the pressure sensor, thereby causing the electrical signal of the pressure sensor to change, thereby realizing the occupancy detection of the vehicle seat.

[0003] However, when using pressure sensors to detect occupancy, there may be a situation where someone is sitting but the occupancy is not detected, or there may be a situation where an alarm should be given but is not given, which is prone to detection errors. Summary of the invention

[0004] In view of the above problems, the present application provides a vehicle seat occupancy detection method, device, vehicle and computer-readable storage medium, which solves the problem that seat occupancy detection in a vehicle is prone to detection errors.

[0005] According to one aspect of an embodiment of the present application, a method for detecting seat occupancy of a vehicle is provided, the method comprising:

[0006] When the vehicle is in a low-voltage power-on state, the real-time state of the infrared signal in the seat is obtained; wherein the real-time state includes a normal receiving and sending state and an abnormal interruption state;

[0007] If the real-time state is a normal sending and receiving state, it is determined that the seat is in a non-occupied state; wherein, when the seat is in a non-occupied state, the seat cushion of the seat is in a normal state;

[0008] If the real-time status is an abnormal interruption status, it is determined that the seat is in an occupied state; wherein, when the seat is in an occupied state, the seat cushion of the seat is in a sunken state.

[0009] In an optional exemplary embodiment, the infrared signal includes a first infrared signal and a second infrared signal; and the method further includes:

[0010] Acquire the real-time status of the first infrared signal and the real-time status of the second infrared signal in the seat;

[0011] If the real-time states of the first infrared signal and the second infrared signal are both in a normal sending and receiving state, it is determined that the seat is in a non-occupied state;

[0012] If the real-time states of the first infrared signal and the second infrared signal are both abnormal interruption states, determining that the seat is in an occupied state;

[0013] If the real-time state of the first infrared signal or the second infrared signal is an abnormal interruption state, obtaining first in-vehicle image information of the vehicle;

[0014] If the first in-vehicle image information indicates that the seat is occupied, it is determined that the seat is in an occupied state.

[0015] In an optional exemplary embodiment, when the seat is in an occupied state, the method further includes:

[0016] Acquire second in-vehicle image information of the vehicle; wherein the second in-vehicle image information is thermal imaging image information;

[0017] If the second in-vehicle image information indicates that the thermal radiation wavelength of the seat position is within a preset wavelength range, determining that the seat occupancy state is a passenger occupancy state;

[0018] If the second in-vehicle image information indicates that the wavelength of the heat radiation at the seat position is outside a preset wavelength range, it is determined that the seat occupancy state is a non-passenger occupied state.

[0019] In an optional exemplary embodiment, when the seat occupancy state is a passenger occupancy state, the method further includes:

[0020] Acquire a first infrared interruption distance, a second infrared interruption distance, a third infrared interruption distance, and a fourth infrared interruption distance on both sides of a seat cushion recessed position of the seat;

[0021] Acquire a first concave width of the seat cushion of the seat according to a preset width of the seat cushion, the first infrared interruption distance, and the second infrared interruption distance;

[0022] A second recessed width of the seat cushion of the seat is acquired according to a preset width of the seat cushion, the third infrared interruption distance, and the fourth infrared interruption distance.

[0023] In an optional exemplary embodiment, the method further includes:

[0024] Obtaining the hip width of the passenger according to the first recess width and the seat cushion thickness of the seat; or,

[0025] The hip width of the passenger is obtained according to the second recess width and the seat cushion thickness of the seat.

[0026] In an optional exemplary embodiment, the method further includes:

[0027] comparing the passenger's hip width to the preset width threshold;

[0028] If the passenger's hip width is greater than or equal to the preset width threshold, the passenger occupying the seat is an adult passenger;

[0029] If the hip width of the passenger is smaller than the preset width threshold, the passenger occupying the seat is a non-adult passenger.

[0030] In an optional exemplary embodiment, the method further includes:

[0031] Obtaining an average value of the concave width according to the first concave width and the second concave width;

[0032] The mean value of the depression width is corrected based on the correction coefficient to obtain a corrected depression width.

[0033] According to another aspect of an embodiment of the present application, a vehicle seat occupancy detection device is provided, the device comprising:

[0034] An acquisition module, used for acquiring the real-time status of the infrared signal in the seat when the vehicle is in a low-voltage power-on state; wherein the real-time status includes a normal receiving and sending state and an abnormal interruption state;

[0035] A determination module is used to determine that the seat is in a non-occupied state if the real-time state is a normal receiving and sending state; and to determine that the seat is in an occupied state if the real-time state is an abnormal interruption state; wherein, when the seat is in a non-occupied state, the seat cushion of the seat is in a normal state, and when the seat is in an occupied state, the seat cushion of the seat is in a recessed state.

[0036] According to another aspect of an embodiment of the present application, a vehicle is provided, comprising:

[0037] Controller;

[0038] The memory is used to store one or more programs. When the one or more programs are executed by the controller, the controller implements the above-mentioned vehicle seat occupancy detection method.

[0039] According to another aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program includes at least one executable instruction. When the executable instruction is run on a seat occupancy detection device / vehicle of a vehicle, the seat occupancy detection device / vehicle of the vehicle performs the operation of the seat occupancy detection method of the vehicle as described above.

[0040] In the vehicle seat occupancy detection method of the embodiment of the present application, once the vehicle is in a low-voltage power-on state, the vehicle can obtain the real-time state of the infrared signal in the seat based on the low-voltage power supply of the vehicle to determine whether the real-time state of the infrared signal is a normal transceiver state or an abnormal interruption state; if the infrared signal is an abnormal interruption state, it is determined that the seat cushion is in a concave state, thereby determining that the vehicle seat is in an occupied state; if the infrared signal is in a normal transceiver state, it is determined that the seat cushion is in a regular state, thereby determining that the vehicle seat is in a non-occupied state. In this way, the occupancy of the vehicle seat can be determined based on the normal transceiver state or the abnormal interruption state of the infrared signal in the vehicle seat, thereby solving the problem of easy detection errors in the seat occupancy detection in the vehicle and improving the accuracy of the seat occupancy detection in the vehicle.

[0041] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0043] Figure 1 A structural schematic diagram showing an embodiment of a normal state of a seat cushion involved in a vehicle seat occupancy detection method provided by the present application;

[0044] Figure 2 A structural schematic diagram showing an embodiment of a seat cushion depression state related to a vehicle seat occupancy detection method provided by the present application;

[0045] Figure 3 A schematic diagram showing a flow chart of an embodiment of a vehicle seat occupancy detection method provided by the present application;

[0046] Figure 4 A schematic diagram showing a flow chart of an embodiment of a seat non-occupied state in a vehicle seat occupancy detection method provided by the present application;

[0047] Figure 5 A schematic diagram showing a flow chart of an embodiment of a seat occupied state in a vehicle seat occupied detection method provided by the present application;

[0048] Figure 6 A schematic flow chart showing another embodiment of the seat occupancy detection method for a vehicle provided by the present application;

[0049] Figure 7 A schematic diagram showing a flow chart of an embodiment of a seat occupancy detection method for a vehicle provided by the present application for determining whether a seat is occupied by a passenger or not;

[0050] Figure 8 A schematic diagram showing a flow chart of an embodiment of obtaining the passenger hip width in a vehicle seat occupancy detection method provided by the present application;

[0051] Fig. 9 A flow chart showing an embodiment of the seat occupancy detection method for a vehicle provided by the present application for determining whether a seat occupant is an adult / non-adult;

[0052] Fig.10 A schematic structural diagram of an embodiment of a vehicle seat occupancy detection device provided by the present application is shown;

[0053] Fig.11 A schematic structural diagram of an embodiment of a vehicle provided by the present application is shown. DETAILED DESCRIPTION

[0054] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0055] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0056] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0057] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0058] The following is a brief introduction to the design concept of the embodiment of the present application:

[0059] In current new energy vehicles, occupancy detection is achieved through pressure sensors. However, the passenger's sitting position or body shape may not be centrally located, resulting in position deviations, which causes the pressure sensor to fail to detect pressure changes. As a result, there may be people sitting but no seat is detected, or there may be an alarm that should be given but is not given, which can easily lead to detection errors. At the same time, when detecting seat occupancy through pressure sensors, due to the relatively simple pressure sensing, it is impossible to distinguish whether there is a person sitting on the seat or a heavy object, which may lead to false alarms for seat belts not being fastened.

[0060] In view of this, in order to solve the above problems, the present application proposes a vehicle seat occupancy detection method to better improve the accuracy of seat occupancy detection in the vehicle. The vehicle seat involved in the vehicle seat occupancy detection method of the present application is shown in FIG. Figure 1 and Figure 2 As shown, Figure 1 The schematic diagram of the structure of the seat of the present application in a non-occupying state is shown. At this time, since the seat is in a non-occupying state and does not bear a certain weight, the seat cushion is in a normal state; Figure 2 A schematic diagram of the structure of the seat of the present application in an occupied state is shown. At this time, since the seat is in an occupied state, the seat bears a certain weight and the seat cushion is in a concave state.

[0061] Please continue to read Figure 1 He Ru Figure 2 As shown, in the vehicle seat involved in the vehicle seat occupancy detection method of the present application, the vehicle seat may include multiple groups of infrared sensors arranged in the seat, and each group of infrared sensors includes an infrared transmitter 10 and a corresponding infrared receiver 20. The number of infrared sensors in the seat can be, but not limited to, 1 group, 2 groups, 3 groups, etc., which are arranged according to actual application conditions; the infrared transmitter 10 and the infrared receiver 20 in each group of infrared sensors are arranged on the left or right side of the seat, which is not specifically limited in the present application.

[0062] The infrared transmitter 10 and the corresponding infrared receiver 20 in each group of infrared sensors are relatively arranged under the seat cushion in the seat, for example, they can be arranged on both sides of the seat, and each group of infrared sensors is arranged close to the lower side of the seat cushion, so that when the seat cushion is in a normal state, the infrared transmitter 10 in each group can transmit infrared rays to the corresponding infrared receiver 20, and the infrared receiver 20 can normally receive the infrared rays emitted by the corresponding infrared transmitter 10. At this time, the infrared sensor can normally send and receive infrared signals; if the seat cushion is in a recessed state, the recessed seat cushion will block the infrared receiver 20 from receiving the infrared rays emitted by the corresponding infrared transmitter 10, and the infrared sensor's infrared signal reception and transmission will be abnormal.

[0063] In the vehicle involved in the present application, the vehicle also includes a cockpit domain controller (Cockpit Domain Controller, CDC). After the infrared sensor arranged in the seat obtains the real-time status of the infrared signal, it can feed back to the cockpit domain controller of the vehicle, thereby realizing the judgment of the seat occupancy status.

[0064] The seats in the vehicle involved in the present application may be the front left seat, the front right seat, the rear left seat, the rear right seat, etc., and the embodiments of the present application do not specifically limit this.

[0065] The following describes the vehicle seat occupancy detection method provided by the exemplary embodiment of the present application in combination with the aforementioned seat structure and reference to the accompanying drawings. It should be noted that the aforementioned seat structure is only shown to facilitate understanding of the concept and principle of the present application, and the implementation of the present application is not limited in this respect.

[0066] The execution subject of the vehicle seat occupancy detection method may be a terminal device, a server, a body domain controller, a cockpit domain controller or other processing devices, and the terminal device may be a user equipment (UE), a computer, a mobile device, a user terminal, a terminal, a cellular phone, a personal digital assistant (PDA), a handheld device, a computing device, a vehicle-mounted device, a wearable device, etc. In some possible implementations, the vehicle seat occupancy detection method may be implemented by a processor calling a computer-readable instruction stored in a memory.

[0067] Specifically, see Figure 3 As shown, the vehicle seat occupancy detection method of this embodiment includes the following steps:

[0068] Step S100, when the vehicle is in a low voltage power-on state, the real-time state of the infrared signal in the seat is obtained.

[0069] Among them, the low-voltage power-on state refers to the vehicle being in a low-voltage power supply state. At this time, some low-voltage electrical appliances on the vehicle can operate normally under low-voltage power supply without being affected by high-voltage power off. For this application, since the vehicle is in a low-voltage power-on state, the infrared sensor in the seat can keep running under the low-voltage power supply of the vehicle battery, and monitor the infrared signal state of the infrared sensor in the seat in real time to determine whether the real-time state of the infrared signal in the seat is a normal receiving and sending state or an abnormal interruption state, and feed back the real-time state of the infrared signal to the cockpit domain controller.

[0070] Exemplarily, when the vehicle is in a low-voltage power-on state, the infrared transmitter in the infrared sensor in the seat emits infrared rays, and the infrared receiver receives the infrared rays emitted by the corresponding infrared transmitter; if the infrared receiver can normally receive the infrared rays emitted by the corresponding infrared transmitter, then the infrared signal in the seat is in a normal sending and receiving state; if the infrared receiver cannot receive the infrared rays emitted by the corresponding infrared transmitter, the infrared signal of the infrared sensor may be blocked, thereby affecting the reception of the infrared receiver, and the infrared signal in the seat is in an abnormal interruption state.

[0071] Step S200: If the real-time status is a normal sending and receiving status, the seat is determined to be in a non-occupied state; if the real-time status is an abnormal interruption state, the seat is determined to be in an occupied state.

[0072] Among them, when the seat is in a non-occupied state, the seat cushion is in a normal state, which means that the seat cushion is not under pressure from a heavy object and is in a normal rebound state; when the seat is in an occupied state, the seat cushion is in a sunken state. For this application, if the real-time state of the infrared signal is an abnormal interruption state, it is determined that the seat cushion is in a sunken state, and the sunken state of the seat cushion blocks the infrared rays emitted by the infrared transmitter in the seat, thereby determining that the vehicle seat is in an occupied state; if the infrared signal is in a normal transceiver state, it is determined that the seat cushion is in a normal state, and the seat cushion is not sunken, and will not block the infrared rays emitted by the infrared transmitter in the seat, thereby determining that the vehicle seat is in a non-occupied state.

[0073] In this way, the occupancy status of the vehicle seat can be determined according to the normal receiving and sending status or abnormal interruption status of the infrared signal in the vehicle seat, thereby solving the problem of easy detection errors in the seat occupancy detection in the vehicle and improving the accuracy of the seat occupancy detection in the vehicle. It avoids the situation in the related art that the pressure sensor used fails to detect the pressure change due to the position deviation of the passenger in the vehicle or the passenger's body shape, so that there is a person sitting but the occupancy is not detected, or there is an alarm that should be reported but is not reported.

[0074] In an exemplary embodiment, see Figure 4-Figure 6 As shown, the infrared signal includes a first infrared signal and a second infrared signal; in combination with step S100 in the aforementioned embodiment, in order to determine the non-occupied state of the vehicle seat, refer to Figure 4 As shown, step S100 at least includes step S110 and step S120, and the specific steps are:

[0075] Step S110, acquiring the real-time status of the first infrared signal and the real-time status of the second infrared signal in the seat;

[0076] Step S120: If the real-time status of the first infrared signal and the second infrared signal are both in a normal receiving and sending state, it is determined that the seat is in a non-occupied state.

[0077] In this embodiment, combined with the above Figure 1 An exemplary seat structure may include two groups of infrared sensors in the seat, and each group of infrared sensors has an infrared signal. For the present application, the real-time status of the first infrared signal and the second infrared signal is determined. If the first infrared signal and the second infrared signal are both in the normal sending and receiving state, it is determined that the seat cushion is in a normal state, and there is no depression in the seat cushion, which will not block the infrared rays emitted by the infrared transmitter in the seat, thereby determining that the vehicle seat is in a non-occupied state. Through the present application, it is convenient for the vehicle to judge the occupancy status of the seat through the first infrared signal and the second infrared signal in the seat, further improving the accuracy of seat occupancy detection in the vehicle.

[0078] In an exemplary embodiment of the present application, in combination with step S100 in the above-mentioned embodiment, in order to determine the occupied state of the vehicle seat, refer to the following for details. Figure 5 As shown, step S100 at least includes step S110 and step S130, and the specific steps are:

[0079] Step S110, acquiring the real-time status of the first infrared signal and the real-time status of the second infrared signal in the seat;

[0080] Step S130: If the real-time status of the first infrared signal and the second infrared signal are both in an abnormal interruption status, it is determined that the seat is in an occupied state.

[0081] In this embodiment, combined with the above Figure 2 An exemplary seat structure may include two groups of infrared sensors in the seat, and each group of infrared sensors has an infrared signal. For the present application, the real-time status of the first infrared signal and the second infrared signal is determined. If the first infrared signal and the second infrared signal are both in an abnormal interruption state, it is determined that the seat cushion is in a concave state, and the concave seat cushion blocks the infrared rays emitted by the infrared transmitter in the seat, thereby determining that the vehicle seat is in an occupied state. Through the present application, it is convenient for the vehicle to determine the seat occupancy status through the first infrared signal and the second infrared signal in the seat, further improving the accuracy of seat occupancy detection in the vehicle.

[0082] In an exemplary embodiment of the present application, in combination with step S100 in the above-mentioned embodiment, in order to determine the occupied state of the vehicle seat, refer to the following for details. Figure 6 As shown, step S100 at least includes step S110, step S140 and step S141, and the specific steps are:

[0083] Step S110, acquiring the real-time status of the first infrared signal and the real-time status of the second infrared signal in the seat;

[0084] Step S140, if the real-time state of the first infrared signal or the second infrared signal is an abnormal interruption state, obtaining first in-vehicle image information of the vehicle;

[0085] Step S141: if the first in-vehicle image information indicates that the seat is occupied, determining that the seat is in an occupied state.

[0086] Among them, the first in-vehicle image information can be but is not limited to in-vehicle image information obtained by an ordinary camera, infrared thermal imaging camera, etc. in the vehicle. It is set according to actual application conditions and this application does not make specific limitations.

[0087] In this embodiment, combined with the above Figure 2 An exemplary seat structure may include two groups of infrared sensors in the seat, and each group of infrared sensors has an infrared signal. For the present application, the real-time status of the first infrared signal and the second infrared signal is determined. If the first infrared signal or the second infrared signal is in an abnormal interruption state, it is determined that the seat cushion may be in a concave state, and the depression of the seat cushion blocks the infrared rays emitted by at least one infrared transmitter in the seat; in order to further determine the seat occupancy status, the first in-vehicle image information in the vehicle can be obtained, and combined with the first in-vehicle image information, it is determined whether the corresponding seat is occupied. Exemplarily, if the first infrared signal of the seat is in an abnormal interruption state, and the first in-vehicle image information indicates that the seat is occupied, it is determined that the seat is in an occupied state. Through the present application, it is convenient for the vehicle to judge the seat occupancy status through the first infrared signal and the second infrared signal in the seat, and in combination with the first in-vehicle image information, further improving the accuracy of seat occupancy detection in the vehicle.

[0088] In an exemplary embodiment, see Figure 7 As shown, in combination with the above-mentioned embodiment, when it is determined that the seat of the vehicle is in an occupied state, in order to determine whether the vehicle seat is in a passenger occupied state or a non-passenger occupied state, the vehicle seat occupancy detection method of the present application further includes at least step S300, step S310 and step S320, and the specific steps are:

[0089] Step S300, obtaining second in-vehicle image information of the vehicle;

[0090] Step S310, if the second in-vehicle image information indicates that the thermal radiation wavelength of the seat position is within a preset wavelength range, determining that the seat occupancy state is a passenger occupancy state;

[0091] Step S320: If the second in-vehicle image information indicates that the thermal radiation wavelength of the seat position is outside a preset wavelength range, it is determined that the seat occupancy state is a non-passenger occupancy state.

[0092] Among them, the second in-vehicle image information is thermal imaging image information, which is obtained by an infrared thermal imaging camera set in the vehicle. The thermal imaging image information obtained by the infrared thermal imaging camera includes thermal radiation wavelength information of various positions in the vehicle. This application can determine whether the seat is occupied by a passenger in combination with the thermal radiation wavelength information presented in the thermal imaging image information. The preset wavelength range of this application can be set to the wavelength range of the human body. For example, the preset wavelength range can be but is not limited to 8μm-14μm, which is set according to the actual application situation, and this application does not make specific limitations.

[0093] For example, when determining that the front right seat in the vehicle is in an occupied state, the second in-vehicle image information obtained at this time indicates that the wavelength of heat radiation at the front right seat is 10μm, and the front right seat is determined to be in a passenger occupied state; when determining that the rear right seat in the vehicle is in an occupied state, the second in-vehicle image information obtained at this time indicates that the wavelength of heat radiation at the rear right seat is 4μm, and the rear right seat is determined to be in a non-passenger occupied state. Through the present application, when the seat in the vehicle is in an occupied state, combined with the thermal imaging image information in the vehicle, it is more accurate to determine whether the seat's occupied state is a passenger occupied state or a non-passenger occupied state.

[0094] In an exemplary embodiment, see Figure 8 As shown, in combination with the above-mentioned embodiments, when the seat of the vehicle is in a passenger occupied state, in order to obtain the hip width of the passenger on the vehicle seat, the seat occupancy detection method of the vehicle of the present application further includes at least the following steps:

[0095] Step S400, obtaining a first infrared interruption distance, a second infrared interruption distance, a third infrared interruption distance, and a fourth infrared interruption distance on both sides of a recessed position of a seat cushion of the seat;

[0096] Step S410, obtaining a first concave width of the seat cushion of the seat according to a preset width of the seat cushion, the first infrared interruption distance, and the second infrared interruption distance;

[0097] Among them, the preset width of the seat cushion in the present application refers to the distance between the matching infrared transmitter and infrared receiver arranged in the seat.

[0098] For example, when the vehicle seat includes two sets of infrared sensors, the first infrared signal, the second infrared signal, and the second in-vehicle image information determine that the vehicle seat is in a passenger occupied state, and at this time the seat cushion is sunken, causing the first infrared signal and the second infrared signal to be abnormally interrupted, and the sunken seat cushion blocks the infrared rays emitted by the infrared transmitter in the seat. When the infrared rays are blocked, the distances on both sides of the seat sunken position can be obtained, that is, the distance from the infrared transmitter to the seat cushion sunken position and the distance from the infrared receiver to the seat cushion sunken position, so as to calculate the sunken width of the sunken position in combination with the preset width of the seat cushion and the distances on both sides of the seat sunken position.

[0099] For example, combined with Figure 2 As shown, assuming that the distance between the infrared transmitter and the infrared receiver in the infrared sensor at the front of the seat is W, if the distance between the infrared transmitter and the seat cushion depression in the infrared sensor at the front of the seat is the first infrared interruption distance Z1, and the distance between the infrared receiver and the seat cushion depression is the second infrared interruption distance Y1, then at this time, the first depression width X1 of the infrared sensor position at the front of the seat = W-Z1-Y1. Through this application, the seat cushion depression width of the seat can be determined by combining the first infrared signal, the second infrared signal, and the second in-vehicle image information, so as to facilitate the subsequent judgment of the type of passenger on the seat through the seat cushion depression width.

[0100] For further information, please refer to Figure 8 As shown, after calculating the first depression width of the seat cushion, the vehicle seat occupancy detection method further includes step S411, obtaining the hip width of the passenger according to the first depression width and the seat cushion thickness of the seat.

[0101] Among them, because the seat is in the state of passenger occupying the seat, the two sides of the depressed position of the seat cushion are in contact with the passenger's buttocks when the passenger sits on it. When calculating the width of the passenger's buttocks, the thickness of the seat cushion itself needs to be taken into account. After the seat cushion is depressed, the thickness of the seat cushion on both sides of the depressed position of the seat cushion that is in contact with the passenger's buttocks will be involved.

[0102] For example, if the thickness of the seat cushion is B, when the passenger sits in the front position of the seat, only the first infrared signal of the infrared sensor in the front of the seat is interrupted, and the infrared signal is in an abnormal interruption state. Then, after obtaining the first depression width of the seat cushion through the infrared sensor in the front of the seat, the passenger hip width A1=X1-2B can be calculated. Through this application, the seat depression width and the seat cushion thickness are combined to estimate the passenger hip width, which is convenient for the subsequent judgment of the type of passenger occupying the seat through the passenger hip width.

[0103] Step S420: acquiring a second recessed width of the seat cushion of the seat according to the preset width of the seat cushion, the third infrared interruption distance, and the fourth infrared interruption distance.

[0104] In combination with the above-mentioned embodiment, the preset width of the seat cushion is the distance between the matching infrared transmitter and infrared receiver set in the seat, and the vehicle seat includes two sets of infrared sensors, which determine whether the vehicle seat is in a passenger occupied state through the first infrared signal, the second infrared signal, and the second in-vehicle image information. Figure 2 As shown, it can also be assumed that the distance between the infrared transmitter and the infrared receiver in the infrared sensor at the rear of the seat is W. If the distance between the infrared transmitter and the seat cushion depression in the infrared sensor at the rear of the seat is the third infrared interruption distance Z2, and the distance between the infrared receiver and the seat cushion depression is the fourth infrared interruption distance Y2, then the second depression width X2 of the infrared sensor position at the front of the seat = W-Z2-Y2. Through this application, the seat cushion depression width of the seat can be determined by combining the first infrared signal, the second infrared signal, and the second in-vehicle image information, so as to facilitate the subsequent judgment of the type of passenger on the seat by the seat cushion depression width.

[0105] For further information, please refer to Figure 8 As shown, after the second depression width of the seat cushion is calculated, the vehicle seat occupancy detection method further includes step S421, obtaining the hip width of the passenger according to the second depression width and the seat cushion thickness of the seat.

[0106] Among them, because the seat is in the state of passenger occupying the seat, the two sides of the depressed position of the seat cushion are in contact with the passenger's buttocks when the passenger sits on it. When calculating the width of the passenger's buttocks, the thickness of the seat cushion itself needs to be taken into account. After the seat cushion is depressed, the thickness of the seat cushion on both sides of the depressed position of the seat cushion that is in contact with the passenger's buttocks will be involved.

[0107] For example, if the thickness of the seat cushion is B, the weight of the passenger is at the rear of the seat, which only causes the second infrared signal of the infrared sensor at the rear of the seat to be interrupted, and the infrared signal is in an abnormal interruption state. Then, the second depression width of the seat cushion can be obtained by the infrared sensor at the rear of the seat, and the passenger hip width A2=X2-2B can be calculated. Through this application, the seat depression width and the seat cushion thickness are combined to estimate the passenger hip width, which is convenient for the subsequent judgment of the type of passenger on the seat through the passenger hip width.

[0108] Through the above-mentioned embodiments, no matter whether the weight of the seat-occupying passenger is biased towards the front of the seat or towards the back of the seat, it can be monitored and feedback calculated based on the different infrared sensors arranged in the seat, so as to obtain the hip width of the seat-occupying passenger, so as to facilitate the subsequent judgment of the type of the seat-occupying passenger through the hip width of the passenger.

[0109] In combination with the above-mentioned embodiment, after obtaining the hip width of the passenger on the vehicle seat, please continue to refer to the following Fig. 9 As shown, the seat occupancy detection method of the vehicle of the present application also includes at least the following steps:

[0110] Step S500, comparing the passenger's hip width with the preset width threshold;

[0111] Step S510: If the passenger's hip width is greater than or equal to the preset width threshold, the passenger occupying the seat is an adult passenger;

[0112] Step S520: If the hip width of the passenger is smaller than the preset width threshold, the passenger occupying the seat is a non-adult passenger.

[0113] Among them, the preset width threshold can be but not limited to 70cm, 75cm, 80cm, etc., which is set according to actual application conditions and is not specifically limited in this application.

[0114] For the convenience of the exemplary description of the present application, if the preset width threshold is 70cm, and the hip width of the seated passenger calculated by the above-mentioned embodiment is 85cm, then the hip width of the passenger is greater than the preset width threshold, and the seated passenger is determined to be an adult passenger at this time; if the calculated hip width of the seated passenger is 50cm, then the hip width of the passenger is less than the preset width threshold, and the seated passenger is determined to be a non-adult passenger, for example, the seated passenger is a child. Through the present application, the accuracy of monitoring the type of seated passenger can be enhanced, and at the same time, when a child is left in the vehicle, the vehicle can be controlled to make corresponding strategies through the calculation and monitoring of the seated passenger, so as to avoid safety accidents of children and improve the safety of the vehicle.

[0115] In some embodiments, the type of the seat-occupying passenger can also be determined in combination with the infrared thermal imaging camera installed inside the vehicle in the aforementioned embodiments. For example, when the seat is occupied by a passenger, the thermal imaging image information obtained by the infrared thermal imaging camera can be combined to analyze the body size and the like in the thermal imaging image information to further determine whether the seat-occupying passenger is an adult passenger or a non-adult passenger, thereby further improving the accuracy of monitoring the type of the seat-occupying passenger.

[0116] In an exemplary embodiment, in combination with the above embodiments, the vehicle seat occupancy detection method of the present application further includes at least the following steps:

[0117] Obtaining an average value of the concave width according to the first concave width and the second concave width;

[0118] The mean value of the depression width is corrected based on the correction coefficient to obtain a corrected depression width.

[0119] Among them, the correction coefficient is pre-set before the vehicle leaves the factory and is between 0-1. For example, the correction coefficient can be but is not limited to 0.8, 0.85, 0.9, etc., and this application does not make specific limitations.

[0120] In combination with the above-mentioned embodiment, when the seat-occupying passenger sits on the seat, the multiple groups of infrared sensors in the seat can realize the monitoring of the seat depression, that is, the first infrared signal and the second infrared signal in the seat are interrupted, so that the infrared signal is in an abnormal interruption state; in order to make the calculation of the depression width on the seat more accurate, the present application calculates the average of the first depression width and the second depression width obtained above, and corrects the depression width average in combination with the correction coefficient, so as to finally obtain the corrected depression width; the specific depression width correction formula is as follows:

[0121]

[0122] In the above depression width correction formula, X is the corrected depression width, K is the correction coefficient, X1 is the first depression width calculated in the above embodiment, and X2 is the second depression width calculated in the above embodiment.

[0123] Through the present application, after obtaining the corrected recess width, the hip width of the passenger occupying the seat can be further accurately obtained in combination with the corrected recess width, so that the monitoring and calculation of the hip width of the passenger is more accurate.

[0124] Fig.10 The schematic diagram of the structure of the embodiment of the seat occupancy detection device of the vehicle of the present application is shown. Fig.10 As shown, the vehicle seat occupancy detection device 600 includes an acquisition module 610 and a control module 620;

[0125] The acquisition module 610 is used to acquire the real-time status of the infrared signal in the seat when the vehicle is in a low-voltage power-on state; wherein the real-time status includes a normal receiving and sending state and an abnormal interruption state;

[0126] The determination module 620 is used to determine that the seat is in a non-occupied state if the real-time state is a normal sending and receiving state; and to determine that the seat is in an occupied state if the real-time state is an abnormal interruption state; wherein, when the seat is in a non-occupied state, the seat cushion of the seat is in a normal state, and when the seat is in an occupied state, the seat cushion of the seat is in a recessed state.

[0127] It should be noted that the vehicle seat occupancy detection device 600 provided in the above embodiment and the vehicle seat occupancy detection method provided in the aforementioned embodiment belong to the same concept, and the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment and will not be repeated here.

[0128] Fig.11 A schematic diagram of the structure of an embodiment of the vehicle of the present application is shown, which shows a schematic diagram of the structure of a computer system of the vehicle suitable for implementing the embodiment of the present application. The specific embodiment of the present application does not limit the specific implementation of the vehicle.

[0129] See also Fig.11 As shown, the vehicle includes: a controller; a memory for storing one or more programs, and when the one or more programs are executed by the controller, the above-mentioned vehicle seat occupancy detection method is executed.

[0130] Please continue reading Fig.11 As shown, the computer system 700 of the vehicle includes a central processing unit (CPU) 701, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 702 or the program loaded from the storage part 708 to the random access memory (RAM) 703, such as executing the method in the above embodiment. In RAM 703, various programs and data required for system operation are also stored. CPU 701, ROM 702 and RAM 703 are connected to each other through bus 704. Input / output (I / O) interface 705 is also connected to bus 704.

[0131] The following components are connected to the I / O interface 705: an input section 706 including a keyboard, a mouse, etc.; an output section 707 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 708 including a hard disk, etc.; and a communication section 709 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 709 performs communication processing via a network such as the Internet. A drive 710 is also connected to the I / O interface 705 as needed. A removable medium 711, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 710 as needed so that a computer program read therefrom is installed into the storage section 708 as needed.

[0132] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 709, and / or installed from a removable medium 711. When the computer program is executed by a central processing unit (CPU) 701, various functions defined in the system of the present application are executed.

[0133] Another aspect of the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the vehicle seat occupancy detection method as described above. The computer-readable storage medium may be included in the vehicle described in the above embodiment, or may exist independently without being assembled into the vehicle.

[0134] Another aspect of the present application further provides a computer program product or a computer program, the computer program product or the computer program comprising at least one executable instruction, when the executable instruction is run on the vehicle seat occupancy detection device / vehicle, the vehicle seat occupancy detection device / vehicle performs the vehicle seat occupancy detection method as described below:

[0135] When the vehicle is in a low-voltage power-on state, the real-time state of the infrared signal in the seat is obtained; wherein the real-time state includes a normal receiving and sending state and an abnormal interruption state;

[0136] If the real-time state is a normal sending and receiving state, it is determined that the seat is in a non-occupied state; wherein, when the seat is in a non-occupied state, the seat cushion of the seat is in a normal state;

[0137] If the real-time status is an abnormal interruption status, it is determined that the seat is in an occupied state; wherein, when the seat is in an occupied state, the seat cushion of the seat is in a sunken state.

[0138] In an optional manner, the infrared signal includes a first infrared signal and a second infrared signal; the executable instruction may also be used to enable the vehicle seat occupancy detection device / vehicle to perform the following operations:

[0139] Acquire the real-time status of the first infrared signal and the real-time status of the second infrared signal in the seat;

[0140] If the real-time states of the first infrared signal and the second infrared signal are both in a normal sending and receiving state, it is determined that the seat is in a non-occupied state;

[0141] If the real-time states of the first infrared signal and the second infrared signal are both abnormal interruption states, determining that the seat is in an occupied state;

[0142] If the real-time state of the first infrared signal or the second infrared signal is an abnormal interruption state, obtaining first in-vehicle image information of the vehicle;

[0143] If the first in-vehicle image information indicates that the seat is occupied, it is determined that the seat is in an occupied state.

[0144] In an optional manner, the executable instructions may also be used to enable the seat occupancy detection device of the vehicle / the vehicle to perform the following operations:

[0145] When the seat is in an occupied state, obtaining second in-vehicle image information of the vehicle; wherein the second in-vehicle image information is thermal imaging image information;

[0146] If the second in-vehicle image information indicates that the thermal radiation wavelength of the seat position is within a preset wavelength range, determining that the seat occupancy state is a passenger occupancy state;

[0147] If the second in-vehicle image information indicates that the wavelength of the heat radiation at the seat position is outside a preset wavelength range, it is determined that the seat occupancy state is a non-passenger occupied state.

[0148] In an optional manner, the executable instructions may also be used to enable the seat occupancy detection device of the vehicle / the vehicle to perform the following operations:

[0149] When the seat occupancy state is a passenger occupancy state, obtaining a first infrared interruption distance, a second infrared interruption distance, a third infrared interruption distance, and a fourth infrared interruption distance on both sides of a seat cushion recessed position of the seat;

[0150] Acquire a first concave width of the seat cushion of the seat according to a preset width of the seat cushion, the first infrared interruption distance, and the second infrared interruption distance;

[0151] A second recessed width of the seat cushion of the seat is acquired according to a preset width of the seat cushion, the third infrared interruption distance, and the fourth infrared interruption distance.

[0152] In an optional manner, the executable instructions may also be used to enable the seat occupancy detection device of the vehicle / the vehicle to perform the following operations:

[0153] Obtaining the hip width of the passenger according to the first recess width and the seat cushion thickness of the seat; or,

[0154] The hip width of the passenger is obtained according to the second recess width and the seat cushion thickness of the seat.

[0155] In an optional manner, the executable instructions may also be used to enable the seat occupancy detection device of the vehicle / the vehicle to perform the following operations:

[0156] comparing the passenger's hip width to the preset width threshold;

[0157] If the passenger's hip width is greater than or equal to the preset width threshold, the passenger occupying the seat is an adult passenger;

[0158] If the hip width of the passenger is smaller than the preset width threshold, the passenger occupying the seat is a non-adult passenger.

[0159] In an optional manner, the executable instructions may also be used to enable the seat occupancy detection device of the vehicle / the vehicle to perform the following operations:

[0160] Obtaining an average value of the concave width according to the first concave width and the second concave width;

[0161] The mean value of the depression width is corrected based on the correction coefficient to obtain a corrected depression width.

[0162] In the vehicle seat occupancy detection method of the embodiment of the present application, once the vehicle is in a low-voltage power-on state, the vehicle can obtain the real-time state of the infrared signal in the seat based on the low-voltage power supply of the vehicle to determine whether the real-time state of the infrared signal is a normal transceiver state or an abnormal interruption state; if the infrared signal is an abnormal interruption state, it is determined that the seat cushion is in a concave state, thereby determining that the vehicle seat is in an occupied state; if the infrared signal is in a normal transceiver state, it is determined that the seat cushion is in a regular state, thereby determining that the vehicle seat is in a non-occupied state. In this way, the occupancy of the vehicle seat can be determined based on the normal transceiver state or the abnormal interruption state of the infrared signal in the vehicle seat, thereby solving the problem of easy detection errors in the seat occupancy detection in the vehicle and improving the accuracy of the seat occupancy detection in the vehicle.

[0163] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0164] The flowchart and block diagram in the accompanying drawings illustrate the possible architecture, functions and operations of the system, method and computer program product according to various embodiments of the present application. Wherein, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0165] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not, in some cases, constitute limitations on the units themselves.

[0166] According to one aspect of an embodiment of the present application, a computer system is also provided, including a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage portion into a random access memory (RAM), such as executing the method in the above embodiment. In RAM, various programs and data required for system operation are also stored. CPU, ROM and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0167] The following components are connected to the I / O interface: an input part including a keyboard, a mouse, etc.; an output part including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage part including a hard disk, etc.; and a communication part including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. Removable media, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., are installed on the drive as needed so that the computer program read therefrom is installed into the storage part as needed.

[0168] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

[0169] The data collection and processing in this application should be strictly in accordance with the requirements of relevant national laws and regulations when applied in practice, and the informed consent or separate consent of the personal information subject should be obtained. Subsequent data use and processing should be carried out within the scope of authorization of laws and regulations and the personal information subject.

Claims

1. A vehicle seat occupancy detection method, characterized in that: The method includes: When the vehicle is in a low-voltage power-on state, the real-time state of the infrared signal in the seat is obtained; wherein the real-time state includes a normal receiving and sending state and an abnormal interruption state; If the real-time state is a normal sending and receiving state, it is determined that the seat is in a non-occupied state; wherein, when the seat is in a non-occupied state, the seat cushion of the seat is in a normal state; If the real-time status is an abnormal interruption status, it is determined that the seat is in an occupied state; wherein, when the seat is in an occupied state, the seat cushion of the seat is in a sunken state.

2. The vehicle seat occupancy detection method according to claim 1, characterized in that: The infrared signal includes a first infrared signal and a second infrared signal; the method further includes: Acquire the real-time status of the first infrared signal and the real-time status of the second infrared signal in the seat; If the real-time states of the first infrared signal and the second infrared signal are both in a normal sending and receiving state, it is determined that the seat is in a non-occupied state; If the real-time states of the first infrared signal and the second infrared signal are both abnormal interruption states, determining that the seat is in an occupied state; If the real-time state of the first infrared signal or the second infrared signal is an abnormal interruption state, obtaining first in-vehicle image information of the vehicle; If the first in-vehicle image information indicates that the seat is occupied, it is determined that the seat is in an occupied state.

3. The vehicle seat occupancy detection method according to claim 1, characterized in that: When the seat is in an occupied state, the method further includes: Acquire second in-vehicle image information of the vehicle; wherein the second in-vehicle image information is thermal imaging image information; If the second in-vehicle image information indicates that the thermal radiation wavelength of the seat position is within a preset wavelength range, determining that the seat occupancy state is a passenger occupancy state; If the second in-vehicle image information indicates that the wavelength of the heat radiation at the seat position is outside a preset wavelength range, it is determined that the seat occupancy state is a non-passenger occupied state.

4. The vehicle seat occupancy detection method according to claim 1, characterized in that: In the case where the seat occupancy state is a passenger occupancy state, the method further includes: Acquire a first infrared interruption distance, a second infrared interruption distance, a third infrared interruption distance, and a fourth infrared interruption distance on both sides of a seat cushion recessed position of the seat; Acquire a first concave width of the seat cushion of the seat according to a preset width of the seat cushion, the first infrared interruption distance, and the second infrared interruption distance; A second recessed width of the seat cushion of the seat is acquired according to a preset width of the seat cushion, the third infrared interruption distance, and the fourth infrared interruption distance.

5. The vehicle seat occupancy detection method according to claim 4, characterized in that: The method further comprises: Obtaining the hip width of the passenger according to the first recess width and the seat cushion thickness of the seat; or, The hip width of the passenger is obtained according to the second recess width and the seat cushion thickness of the seat.

6. The vehicle seat occupancy detection method according to claim 5, characterized in that: The method further comprises: comparing the passenger's hip width to the preset width threshold; If the passenger's hip width is greater than or equal to the preset width threshold, the passenger occupying the seat is an adult passenger; If the hip width of the passenger is smaller than the preset width threshold, the passenger occupying the seat is a non-adult passenger.

7. The vehicle seat occupancy detection method according to claim 4, characterized in that: The method further comprises: Obtaining an average value of the concave width according to the first concave width and the second concave width; The mean value of the depression width is corrected based on the correction coefficient to obtain a corrected depression width.

8. A vehicle seat occupancy detection device, characterized in that: The device comprises: An acquisition module, used for acquiring the real-time status of the infrared signal in the seat when the vehicle is in a low-voltage power-on state; wherein the real-time status includes a normal receiving and sending state and an abnormal interruption state; A determination module is used to determine that the seat is in a non-occupied state if the real-time state is a normal receiving and sending state; and to determine that the seat is in an occupied state if the real-time state is an abnormal interruption state; wherein, when the seat is in a non-occupied state, the seat cushion of the seat is in a normal state, and when the seat is in an occupied state, the seat cushion of the seat is in a recessed state.

9. A vehicle, characterized in that: include: Controller; A memory for storing one or more programs, which, when executed by the controller, enables the controller to implement the vehicle seat occupancy detection method as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, which includes at least one executable instruction. When the executable instruction is run on the vehicle seat occupancy detection device / vehicle, the vehicle seat occupancy detection device / vehicle performs the operation of the vehicle seat occupancy detection method as described in any one of claims 1 to 7.

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