CN115071561A - Method and system for detecting personnel in vehicle - Google Patents
Method and system for detecting personnel in vehicle Download PDFInfo
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- CN115071561A CN115071561A CN202110281544.XA CN202110281544A CN115071561A CN 115071561 A CN115071561 A CN 115071561A CN 202110281544 A CN202110281544 A CN 202110281544A CN 115071561 A CN115071561 A CN 115071561A
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- uwb signal
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- 238000000034 method Methods 0.000 title claims description 16
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 230000000007 visual effect Effects 0.000 claims description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010019345 Heat stroke Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/015—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting the presence or position of passengers, passenger seats or child seats, and the related safety parameters therefor, e.g. speed or timing of airbag inflation in relation to occupant position or seat belt use
- B60R21/01512—Passenger detection systems
- B60R21/0153—Passenger detection systems using field detection presence sensors
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Mechanical Engineering (AREA)
- Human Computer Interaction (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention provides a detection method and a detection system for personnel in a vehicle, wherein the detection method comprises the following steps: s1: sending out a UWB signal through a UWB signal transmitting unit located at a first position in the vehicle; s2: receiving the UWB signal through a UWB signal receiving unit located at a second position in the vehicle; s3: comparing the waveform of the received UWB signal with a preset waveform, and judging whether personnel exist in the vehicle according to a comparison result; s4: and when the personnel in the vehicle is judged to exist, sending out reminding information. After the technical scheme is adopted, people in the automobile can be effectively identified, and therefore the automobile alarm can be used for reminding an automobile owner in time when children are forgotten in the automobile.
Description
Technical Field
The invention relates to the technical field of vehicle safety, in particular to a method and a system for detecting personnel in a vehicle.
Background
With the improvement of living conditions of people at present, private cars are more and more popular. When the child stays in the car during traveling, the child is possibly influenced by heatstroke or oxygen deficiency or loses life particularly in summer.
In view of the above problem, in the prior art, some vehicles detect whether a child is left in the vehicle by communicating with a wearable device worn by the child. The problem that it exists lies in, every appearance all need wear corresponding equipment, often can forget during the in-service use, and is very inconvenient.
In the prior art, some vehicles adopt millimeter wave radars for live body detection, but detection of the radars is easy to have blind areas, and detection leakage can be caused.
In view of the above, it is necessary to develop a method and a system for conveniently and accurately detecting and reminding people in a vehicle.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide a detection method and a detection system which can conveniently and accurately detect and remind people in a vehicle.
The invention discloses a method for detecting personnel in a vehicle, which comprises the following steps:
s1: sending out a UWB signal through a UWB signal transmitting unit located at a first position in the vehicle;
s2: receiving the UWB signal through a UWB signal receiving unit located at a second position in the vehicle;
s3: comparing the waveform of the received UWB signal with a preset waveform, and judging whether personnel exist in the vehicle according to a comparison result;
s4: and when the personnel in the vehicle is judged to exist, sending out reminding information.
Preferably, the step S1 is preceded by the step of:
acquiring power supply state information and door state information of a vehicle;
when the power state of the vehicle is OFF and the door is opened and closed, step S1 is performed.
Preferably, the step S1 is preceded by the step of:
acquiring the lock state information of the vehicle;
when the vehicle lock is locked, step S1 is performed.
Preferably, the step S4 includes:
by means of an audible/visual warning signal emitted by the horn and/or the lamp of the vehicle, and/or
And sending voice or text reminding information to the external intelligent terminal through the T-BOX.
Preferably, the step S4 further includes:
and when the person in the vehicle is judged, opening the vehicle window and/or the skylight to a preset opening degree.
The invention also discloses a system for detecting the personnel in the vehicle, which comprises:
the UWB signal transmitting unit is positioned at a first position in the vehicle and used for transmitting a UWB signal;
the UWB signal receiving unit is positioned at a second position in the vehicle and is used for receiving a UWB signal sent by the UWB signal transmitting unit;
the vehicle body control module is connected with the UWB signal transmitting unit and the UWB signal receiving unit, a UWB signal processing unit is arranged on the UWB signal receiving unit or the vehicle body control module and is used for comparing the waveform of the received UWB signal with a preset waveform and judging whether a person exists in the vehicle or not according to a comparison result;
and the reminding unit is connected with the vehicle body control module, and when the personnel in the vehicle are judged, the vehicle body control module controls the reminding unit to send reminding information.
Preferably, the vehicle body control module is connected with the vehicle door control module and the power supply module and is used for acquiring vehicle door state information, vehicle lock state information and power supply state information.
Preferably, the reminding unit comprises one or more of a loudspeaker, a car lamp and a T-BOX.
Preferably, the vehicle body control module is connected with a window control module and/or a skylight control module and is used for controlling the window and/or the skylight to be opened to a preset opening degree.
Preferably, the first position is a front row roof in the vehicle, and the second position is a rear row roof in the vehicle; or
The first position is a first side door in the vehicle, and the second position is a second side door in the vehicle.
After the technical scheme is adopted, compared with the prior art, the intelligent automobile interior blind area detection device has the advantages that whether personnel exist in an automobile or not is judged by comparing the waveform of the received UWB signals with the preset waveform, the personnel in the automobile can be accurately identified, the blind areas are avoided, a user does not need to wear wearable equipment, and the detection can be conveniently, quickly and accurately completed.
Drawings
FIG. 1 is a schematic flow chart illustrating a method for detecting a person in a vehicle according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a system for detecting a person in a vehicle according to an embodiment of the invention;
FIG. 3 is a schematic flow chart illustrating a method for detecting a person in a vehicle according to an embodiment of the present disclosure;
fig. 4 is a schematic flow chart of a method for detecting a person in a vehicle according to an embodiment of the present invention.
Detailed Description
The advantages of the invention are further illustrated by the following detailed description of the preferred embodiments in conjunction with the drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if," as used herein, may be interpreted as "at … …" or "when … …" or "in response to a determination," depending on the context.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
Referring to fig. 1, a schematic flow chart of a method for detecting a person in a vehicle according to an embodiment of the present invention is shown, where the method includes:
s1: the UWB signal is emitted through an UWB (Ultra-wideband) signal emitting unit located at a first position in the vehicle.
The UWB signal transmitting Unit may be a UWB ECU (Electronic Control Unit), and the UWB signal is used to detect a person in the vehicle. Preferably, step S1 is triggered under certain conditions. Specifically, in some embodiments, step S1 is preceded by the step of: the method comprises the steps of obtaining power supply state information and vehicle door state information of a vehicle, wherein the vehicle door state information comprises information of opening and closing of a vehicle door. When the power state of the vehicle is OFF and the door is opened and closed, step S1 is performed. That is, when the vehicle is turned off and the vehicle interior occupant opens the door and gets off the vehicle and closes the door, the process proceeds to step S1 to perform vehicle interior occupant detection so as to avoid forgetting children and the like in the vehicle. The door is preferably a driver's seat door.
In other embodiments, step S1 is preceded by the steps of: acquiring the lock state information of the vehicle; when the vehicle lock is locked, step S1 is performed. When the user locks the car, people in the car are detected to avoid forgetting children and the like in the car.
S2: receiving the UWB signal through a UWB signal receiving unit located at a second position in the vehicle.
The UWB signal receiving unit may be a UWB ECU. In this embodiment, the UWB signal transmitting unit and the UWB signal receiving unit are disposed at different positions of the vehicle to better receive the signal and avoid the existence of a blind area as much as possible. In some embodiments, the first position is a front row roof in the vehicle and the second position is a rear row roof in the vehicle. In other embodiments, the first position is a first side door in the vehicle, the second position is a second side door in the vehicle, and for example, the UWB signal transmitting unit and the UWB signal receiving unit are respectively arranged on the doors on both sides of the rear row in the vehicle. The positions listed here are merely examples and are not limiting, and the specific setting position can be flexibly adjusted by those skilled in the art according to the in-vehicle space condition of a specific vehicle. In some embodiments, the UWB signal transmitting unit may be a plurality of units, which are disposed at different positions in the vehicle; in some embodiments, the UWB signal receiving unit is provided in a plurality of numbers, and is disposed at different positions in the vehicle. The specific setting number and the setting position can be flexibly adjusted by technicians in the field according to the in-vehicle space condition of a specific vehicle.
S3: and comparing the waveform of the received UWB signal with a preset waveform, and judging whether personnel exist in the vehicle according to a comparison result.
It will be appreciated by those skilled in the art that the human body may have some effect on UWB signal propagation. On the one hand, the propagation of UWB signals may form diffracted waves on the surface of the human body and may cause reflected and scattered waves by objects around the human body; on the other hand, the main component of the human body is water, and the water has a strong absorption effect on the UWB signals, so that the UWB signal intensity is attenuated to a certain degree. Therefore, when a person and a non-person are in the vehicle, the waveforms of the UWB signals are different to some extent. The waveform of receiving UWB signals is compared with the preset waveform through the UWB signal processing unit, the preset waveform can be the prestored UWB signal waveform sent by the same UWB signal transmitting unit received by the same UWB signal receiving unit when no person exists in the vehicle, and whether a person exists in the vehicle can be judged. The preset waveform may be one or more. For example, the preset waveform may be a UWB signal waveform transmitted by the same UWB signal transmitting unit and received by the same UWB signal receiving unit when a plurality of people are not in the vehicle and common articles (such as clothes) exist, and the difference between the preset waveform and the preset waveform is analyzed by comparison, so as to determine whether a person exists in the vehicle. In other embodiments, the preset waveform may also be a UWB signal waveform transmitted by the same UWB signal transmitting unit and received by the same UWB signal receiving unit when a person is in the vehicle. Whether a person exists in the vehicle is judged by comparing the similarity degree of the UWB signal waveform with the preset person. The person referred to herein may be a child or the like, or may be a pet in some cases.
S4: and when the personnel in the vehicle is judged to exist, sending out reminding information.
When the person in the vehicle is judged to be present, the reminding information is sent to remind the vehicle owner (or the driver) so as to avoid forgetting children and the like in the vehicle. In some embodiments, the owner (or occupant) of the vehicle is alerted by an audible/visual alert being emitted by the horn and/or the lights of the vehicle. In other embodiments, the remote reminding is performed by sending out voice or text reminding information to an external intelligent terminal (such as a mobile phone of a designated contact) through a T-BOX (Telematics BOX). Further, in the step, when it is determined that the person exists in the vehicle, the window and/or the skylight can be opened to a preset opening degree, so that the person in the vehicle is prevented from suffocating due to oxygen deficiency. Further, in some embodiments, after the prompt message of voice or text is sent to the external intelligent terminal through the T-BOX, the external intelligent terminal can also feed back a control instruction to the vehicle through the T-BOX to open a window, a sunroof, a door, an air conditioner in the vehicle, and the like, so as to ensure the safety of people in the vehicle.
Fig. 2 is a schematic structural diagram of an in-vehicle occupant detection system according to an embodiment of the present invention. The detection system for the people in the vehicle comprises:
the UWB signal transmitting unit is positioned at a first position in the vehicle and used for transmitting UWB signals;
the UWB signal receiving unit is positioned at a second position in the vehicle and is used for receiving a UWB signal sent by the UWB signal transmitting unit;
and the Body Control Module (BCM) is connected with the UWB signal transmitting unit and the UWB signal receiving unit, the UWB signal receiving unit or the body control module is provided with a UWB signal processing unit (not shown in the figure), and the UWB signal processing unit is used for comparing the waveform of the received UWB signal with a preset waveform and judging whether a person exists in the vehicle according to the comparison result. Preferably, the UWB signal processing unit is provided in the UWB signal receiving unit to obtain a faster response speed.
And the reminding unit is connected with the vehicle body control module, and when the personnel in the vehicle are judged, the vehicle body control module controls the reminding unit to send reminding information. In the embodiment of fig. 2, the reminding unit comprises a loudspeaker, a car light and a T-BOX.
Further, the vehicle body control module is also connected with the vehicle door control module and the power supply module and used for acquiring vehicle door state information, vehicle lock state information and power supply state information.
Further, the vehicle body control module is connected with the vehicle window control module and/or the skylight control module and is used for controlling the vehicle window and/or the skylight to be opened to a preset opening degree.
It should be noted that, the unit modules connected by the BCM in fig. 2 are only examples, and those skilled in the art may selectively connect the above unit modules according to the reminding manner to be implemented and the functions to be implemented thereby.
Referring to fig. 3, a schematic flow chart of a method for detecting a person in a vehicle according to an embodiment of the present invention specifically includes:
BCM is connected with power module and door control module, acquire power state information and door state information, become to OFF when detecting power state, when the door is opened and is closed, BCM sends and detects request signal to UWB signal transmitting unit, UWB signal transmitting unit sends the UWB signal, UWB signal receiving unit receives this UWB signal, UWB signal processing unit among the UWB signal receiving unit compares the UWB signal of receiving with preset signal waveform, judge whether someone in the car. When the fact that a person exists in the vehicle is judged, an alarm request is sent to the BCM, after the BCM receives the alarm request, a control signal is sent to the vehicle lamp and the loudspeaker, the vehicle lamp is controlled to flicker at a preset frequency, and the loudspeaker is controlled to emit sounds with preset loudness and frequency, so that the person remaining in the vehicle is reminded; and meanwhile, a control signal is sent to the vehicle window control module, and the vehicle window is opened to a preset opening degree, so that the safety of personnel in the vehicle is ensured.
Referring to fig. 4, a schematic flow chart of a method for detecting a person in a vehicle according to an embodiment of the present invention specifically includes:
BCM is connected with door control module, acquires the lock state information, when detecting that the vehicle is locked, when the lock locking promptly, BCM sends and detects the request signal to UWB signal transmitting unit, UWB signal transmitting unit sends the UWB signal, UWB signal receiving unit receives this UWB signal, UWB signal processing unit among the UWB signal receiving unit compares the UWB signal of receiving with predetermined signal waveform, judges whether someone in the car. When the fact that a person is in the vehicle is judged, an alarm request is sent to the BCM, after the BCM receives the alarm request, a reminding request is sent to the T-BOX, and the T-BOX sends a voice or text notification to a mobile phone bound with the T-BOX so as to remind the person in the vehicle.
The detection methods shown in the attached figures 3 and 4 can be performed in sequence, so that two-stage reminding is formed, and the life danger caused by the fact that a driver and a passenger forget children in the automobile is better avoided.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (10)
1. A method for detecting people in a vehicle is characterized by comprising the following steps:
s1: sending out a UWB signal through a UWB signal transmitting unit located at a first position in the vehicle;
s2: receiving the UWB signal through a UWB signal receiving unit located at a second position in the vehicle;
s3: comparing the waveform of the received UWB signal with a preset waveform, and judging whether personnel exist in the vehicle according to a comparison result;
s4: and sending out reminding information when judging that personnel exist in the vehicle.
2. The detection method according to claim 1,
the step S1 is preceded by the steps of:
acquiring power supply state information and door state information of a vehicle;
when the power state of the vehicle is OFF and the door is opened and closed, step S1 is performed.
3. The detection method according to claim 1 or 2,
the step S1 is preceded by the steps of:
acquiring the lock state information of the vehicle;
when the vehicle lock is locked, step S1 is performed.
4. The detection method according to claim 1,
the step S4 includes:
by means of an audible/visual warning signal emitted by the horn and/or the lamp of the vehicle, and/or
And sending voice or text reminding information to the external intelligent terminal through the T-BOX.
5. The detection method according to claim 1,
the step S4 further includes:
and when the person in the vehicle is judged, opening the vehicle window and/or the skylight to a preset opening degree.
6. A system for detecting a person in a vehicle, comprising:
the UWB signal transmitting unit is positioned at a first position in the vehicle and used for transmitting a UWB signal;
the UWB signal receiving unit is positioned at a second position in the vehicle and is used for receiving a UWB signal sent by the UWB signal transmitting unit;
the vehicle body control module is connected with the UWB signal transmitting unit and the UWB signal receiving unit, a UWB signal processing unit is arranged on the UWB signal receiving unit or the vehicle body control module and is used for comparing the waveform of the received UWB signal with a preset waveform and judging whether a person exists in the vehicle or not according to a comparison result;
and the reminding unit is connected with the vehicle body control module, and when the personnel in the vehicle are judged, the vehicle body control module controls the reminding unit to send reminding information.
7. The detection system of claim 6,
the vehicle body control module is connected with the vehicle door control module and the power supply module and used for acquiring vehicle door state information, vehicle lock state information and power supply state information.
8. The detection system of claim 6,
the reminding unit comprises one or more of a loudspeaker, a car lamp and a T-BOX.
9. The detection system of claim 6,
the vehicle body control module is connected with the vehicle window control module and/or the skylight control module and is used for controlling the vehicle window and/or the skylight to be opened to a preset opening degree.
10. The detection system of claim 6,
the first position is the front row of the roof in the vehicle, and the second position is the rear row of the roof in the vehicle; or
The first position is a first side door in the vehicle, and the second position is a second side door in the vehicle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110281544.XA CN115071561A (en) | 2021-03-16 | 2021-03-16 | Method and system for detecting personnel in vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110281544.XA CN115071561A (en) | 2021-03-16 | 2021-03-16 | Method and system for detecting personnel in vehicle |
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| CN202110281544.XA Pending CN115071561A (en) | 2021-03-16 | 2021-03-16 | Method and system for detecting personnel in vehicle |
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