CN116620210A - Life protecting method and relevant device for life-carrying body - Google Patents

Life protecting method and relevant device for life-carrying body Download PDF

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Publication number
CN116620210A
CN116620210A CN202310701419.9A CN202310701419A CN116620210A CN 116620210 A CN116620210 A CN 116620210A CN 202310701419 A CN202310701419 A CN 202310701419A CN 116620210 A CN116620210 A CN 116620210A
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CN
China
Prior art keywords
life
vehicle
protection device
signal
life protection
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310701419.9A
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Chinese (zh)
Inventor
刘菲菲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Fibocom Wireless Software Inc
Original Assignee
Xian Fibocom Wireless Software Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xian Fibocom Wireless Software Inc filed Critical Xian Fibocom Wireless Software Inc
Priority to CN202310701419.9A priority Critical patent/CN116620210A/en
Publication of CN116620210A publication Critical patent/CN116620210A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6893—Cars
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient ; user input means
    • A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
    • 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
    • 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
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • 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
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
    • G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
    • G08B25/08—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using communication transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Abstract

The application provides a life protection method and a related device for a life-carrying body, which are applied to the technical field of vehicle-mounted equipment. In the application, the transmitter in the vehicle can transmit signals, and the life protection device can receive the signals transmitted by the transmitter and determine whether a left life body exists or not based on the basic model of the Fresnel zone, thereby avoiding personnel from being left in the vehicle and ensuring the personal safety of the passengers. Moreover, the transmitter is usually preconfigured in the vehicle and has low cost, and no special sensor is required to be configured, so that the configuration cost and the adaptation difficulty can be remarkably reduced by the scheme.

Description

Life protecting method and relevant device for life-carrying body
Technical Field
The application relates to the technical field of vehicle-mounted equipment, in particular to a life protection method and a related device for a life-carrying body.
Background
In recent years, with the popularization of vehicles, events in which children, old people, and the like are left in vehicles often occur. Under the condition that the left-behind personnel in the vehicle does not have the capability of opening the door or the door of the vehicle falls to be locked, the door cannot be opened from the inside, and tragic events that the left-behind personnel are fatalities due to overheating or dyspnea are easily caused. Thus, there is a strong need for an alarm system that prevents personnel from leaving the vehicle in order to reduce the likelihood of such events.
In some schemes, by adding a life detector, an infrared sensor and the like in the vehicle, whether passengers in the vehicle are missed can be determined. However, these solutions require additional sensors and the like to be installed in the vehicle, and the structures of the detector, the sensor and the like are complex, which not only requires high cost but also requires adaptation among a plurality of devices, so that the installation and the use are not easy.
Disclosure of Invention
The embodiment of the application provides a life protection method and a related device for a life-carrying body, which can realize the determination of whether the life-carrying body exists in a vehicle or not through a Wireless Local Area Network (WLAN), and reduce the configuration cost and the adaptation difficulty.
In a first aspect, an embodiment of the present application provides a life protection method for a legacy life body, wherein a transmitter is installed at one end of a vehicle, and a life protection device is installed at the other end of the vehicle, the method comprising:
under a triggering condition, the transmitter transmits a direct signal to the interior of the vehicle, the life protection device receives a reflected signal obtained after the direct signal is reflected by the interior environment of the vehicle, and a Fresnel zone formed between the life protection device and the transmitter covers the riding space of the vehicle;
The life protection device carries out phase superposition on the local oscillation signal and the reflection signal to obtain a superposition signal, and determines whether a legacy life body exists in the vehicle or not based on the superposition signal and a basic model of the Fresnel zone; wherein the local oscillator signal corresponds to the direct signal;
the life protection device performs a life safety protection operation in a case where it is determined that a life-carrying body exists in the vehicle.
Alternatively, the life protection device may be an in-vehicle device.
Wherein, the correspondence includes the same, similar and existence correspondence.
The fresnel zone is a cluster of concentric ellipses with the transceiver device as the focus, i.e., a cluster of concentric ellipses with the life guard and the transmitter as the focus. According to the interference principle, when an object crosses each fresnel zone boundary, the superimposed signal appears as a peak or trough. Therefore, when a legacy living body continuously crosses a plurality of fresnel zone boundaries, the superimposed signal exhibits a sinusoidal-like waveform. Thus, by analyzing this sinusoidal-like waveform, heart rate and respiration rate data can be calculated, and thus it can be determined whether a life-threatening body is present in the vehicle.
In an embodiment of the application, a transmitter in the vehicle may transmit a signal, and the life protection device may be capable of receiving the signal transmitted by the transmitter and determining whether a legacy life entity is present based on a basic model of the fresnel zone. Because the transmitter is usually preconfigured in the vehicle and has low cost, and the life protection device can be realized through a vehicle machine in the vehicle, the scheme can reduce the configuration cost and the adaptation difficulty.
In a possible implementation manner of the first aspect, the life protection device determines whether a legacy life entity exists in the vehicle based on the superimposed signal and a basic model of the fresnel zone, including:
the life protection device calculates and obtains heart rate and respiratory rate data based on the superposition signals and the basic model of the Fresnel zone;
the life protection device determines whether a legacy life entity is present in the vehicle based on the heart rate and respiration rate data.
In a further possible implementation manner of the first aspect, the life protection device calculates heart rate and respiration rate data based on the superimposed signal and a basic model of the fresnel zone, including:
the life protection device constructs the Fresnel zone according to the position of the emitter, the position of the life protection device and the wavelength of the direct signal, and the boundary of the Fresnel zone is determined by the following formula:
wherein Q is n For a point located on the boundary of the fresnel zone, |p 1 Q n |sum |Q n P 2 I is the transmitter and Q, respectively n Distance between and the life protection device and the Q n Distance between |P 1 P 2 I is the distance between the emitter and the life protection device, n is the number of layers of the Fresnel zone, and lambda is the wavelength of the direct signal;
The life protection device determines the fluctuation condition of an object in the riding space of the vehicle according to the superposition signal and the Fresnel zone, wherein the fluctuation condition comprises fluctuation amplitude and/or fluctuation frequency;
the life protection device calculates and obtains the heart rate and respiratory rate data according to the fluctuation condition of the object in the riding space.
The Fresnel zone is constructed by taking the position of the emitter and the position of the life protection device as elliptical focuses and taking the distance between the position of the emitter and the position of the life protection device as focal distances according to the wavelength of the direct signal.
Therefore, heart rate and respiratory rate data of the life-carrying body can be accurately acquired, and accuracy of determining whether the life-carrying body exists or not is improved.
In a possible implementation manner of the first aspect, the emitter is arranged on a rear seat central axis of the vehicle, the life protection device is arranged on a head portion of the vehicle, a length of the fresnel zone is a linear distance between the emitter and the life protection device, and a width of the fresnel zone is a width of the vehicle.
In the embodiment, the arrangement can bring the riding space in the vehicle into the Fresnel zone to the greatest extent, so that the accuracy of determining whether the life-carrying body exists is improved.
In a further possible implementation manner of the first aspect, the life protection device performs a life safety protection operation in a case where it is determined that a life-carrying body exists in the vehicle, specifically including:
the life protection device acquires the contact information of the user;
in the event that a legacy living body is present in the vehicle, the life protection device transmits notification information to the user, the notification information indicating that a legacy living body is present in the vehicle.
Alternatively, the user may be a car owner or an emergency contact.
In the embodiment, the information of the vehicle owner or the emergency contact person can be acquired in advance, and when the existence of the life-carrying body is determined, the existence of the life-carrying body is notified to the vehicle owner or the emergency contact person, so that the information is conveniently transmitted, and the next operation instruction is waited.
In a further possible implementation manner of the first aspect, the number of the users is a plurality, and the life protection device sends notification information to the users, including:
And the life protection device sends the notification information to the high-priority users in the plurality of users according to the priorities respectively corresponding to the plurality of users.
Optionally, when the high-priority user does not answer, the life protection device sends the notification information to the user with the next priority.
In the embodiment, more than one contact way of the contact person can be obtained, the notification information is sent according to the priority of the contact person, and when the user with the previous priority does not answer, the notification information is sent to the user with the next priority, so that the possibility of receiving the notification information can be improved, and the operation instruction of the next step can be conveniently received.
In a further possible implementation manner of the first aspect, in the case that it is determined that a life-carrying body exists in the vehicle, the life protection device performs a life safety protection operation, and specifically further includes:
the life protection device sends alarm information to an emergency center and instructs an automatic driving system of the vehicle to drive the vehicle to the emergency center in the case that the heart rate and/or the respiratory rate of the life-carrying body are abnormal.
In the above embodiment, when the heart rate and/or the respiratory rate of the life-carrying body are abnormal, the alarm information is automatically sent, and some necessary information is carried, so that the life-carrying body can be conveniently rescued. If the vehicle has an automatic driving function, a vehicle owner can remotely start the vehicle, and the vehicle automatically sends the left-over life body to an emergency treatment center, so that the left-over life body can get the doctor as soon as possible.
In a further possible implementation manner of the first aspect, the method further includes:
the life protection device receives life safety protection operation information from the user;
the life protection device controls and operates the vehicle according to the life safety protection operation information.
Optionally, the life safety protection operation information may be releasing the door lock, opening the ventilation system, lowering the window, sending out a warning signal, etc.
In the above embodiment, a contact channel between the user and the legacy living body may be established, so that the user may send life safety protection operation information according to the situation in the vehicle, and dynamically select countermeasures.
In a further possible implementation manner of the first aspect, the method further includes:
in the event that a life-carrying body is present in the vehicle, the life protection device performs one or more of the following operations: releasing the door lock, opening the ventilation system, lowering the window and sending out warning signals. Wherein, the warning signal can be sound, light, electricity, vibration, etc.
In the above embodiment, when it is determined that the legacy life body exists, some rescue operations are automatically performed, greatly guaranteeing the life safety of the legacy life body.
In a further possible implementation manner of the first aspect, the method further includes:
and the life protection device obtains the temperature data in the vehicle according to the reflected signal.
Further, in the event that it is determined that a life-carrying body is present in the vehicle and the temperature in the vehicle reaches a preset temperature threshold, the life protection device performs one or more of the following operations: releasing the door lock, opening the ventilation system, lowering the window and sending out warning signals. Wherein, the warning signal can be sound, light, electricity, vibration, etc.
In a further possible implementation of the first aspect, the triggering condition comprises one or more of the following conditions: vehicle stop, vehicle speed zero, door lock, vehicle lock, and vehicle flameout.
In a second aspect, embodiments of the present application provide a life protection device comprising:
a communication unit configured to:
under the triggering condition, receiving a reflected signal, wherein the reflected signal is obtained after a direct signal emitted by a transmitter to the interior of a vehicle is reflected by the interior environment of the vehicle; a processing unit for:
carrying out phase superposition on the local oscillation signal and the reflected signal to obtain a superposition signal, and determining whether a legacy life body exists in the vehicle or not based on the superposition signal and a basic model of the Fresnel zone; wherein the local oscillator signal corresponds to the direct signal;
In the event that it is determined that a life-carrying body is present within the vehicle, a life safety protection operation is performed.
Further, the life protection device is installed at one end of the vehicle, the emitter is installed at the other end of the vehicle, and a fresnel zone formed between the life protection device and the emitter covers a seating space of the vehicle.
In a possible implementation manner of the second aspect, the processing unit is further configured to:
calculating to obtain heart rate and respiratory rate data based on the superposition signals and the basic model of the Fresnel zone;
and determining whether a life-carrying body exists in the vehicle according to the heart rate and the respiratory rate data.
In a further possible implementation manner of the second aspect, the life protection device constructs the fresnel zone according to the position of the emitter, the position of the life protection device and the wavelength of the direct signal, and the boundary of the fresnel zone is determined by the following formula:
wherein Q is n For a point located on the boundary of the fresnel zone, |p 1 Q n |sum |Q n P 2 I is the transmitter and Q, respectively n Distance between and the life protection device and the Q n Distance between |P 1 P 2 I is the distance between the emitter and the life protection device, n is the number of layers of the Fresnel zone, and lambda is the wavelength of the direct signal;
the processing unit is further configured to:
determining the fluctuation condition of an object in the riding space of the vehicle according to the superposition signal and the Fresnel zone, wherein the fluctuation condition comprises fluctuation amplitude and/or fluctuation frequency;
and calculating to obtain the heart rate and respiratory rate data according to the fluctuation condition of the object in the riding space.
In a possible implementation manner of the second aspect, the emitter is arranged on a rear seat central axis of the vehicle, the life protection device is arranged on a head portion of the vehicle, the length of the fresnel zone is a linear distance between the emitter and the life protection device, and the width of the fresnel zone is a width of the vehicle.
In a further possible implementation manner of the second aspect, the processing unit is further configured to obtain a contact address of the user.
In a further possible implementation manner of the second aspect, the communication unit is further configured to send notification information to the user in case a legacy vital body is present in the vehicle, the notification information indicating that a legacy vital body is present in the vehicle.
In a further possible implementation manner of the second aspect, the communication unit is further configured to send the notification information to a high priority user of the plurality of users according to priorities corresponding to the plurality of users, respectively.
In a further possible implementation manner of the second aspect, the communication unit is further configured to receive life safety protection operation information from the user.
In a further possible implementation manner of the second aspect, the processing unit is further configured to perform a control operation on the vehicle according to the life safety protection operation information.
In a further possible implementation of the second aspect, the processing unit is further configured to, in case a life-threatening body is present in the vehicle, perform one or more of the following operations:
releasing the door lock, opening the ventilation system, lowering the window and sending out warning signals.
In a further possible implementation manner of the second aspect, the processing unit is further configured to obtain in-vehicle temperature data of the vehicle according to the reflected signal. Further, in the event that it is determined that the legacy living body is present in the vehicle and the temperature in the vehicle reaches a preset temperature threshold, the processing unit is further configured to perform one or more of the following: releasing the door lock, opening the ventilation system, lowering the window and sending out warning signals. Wherein, the warning signal can be sound, light, electricity, vibration, etc.
In a further possible implementation manner of the second aspect, the processing unit is further configured to send an alarm message to an emergency centre and instruct an autopilot system of the vehicle to drive the vehicle to the emergency centre in case of an abnormality in the heart rate and/or the respiration rate of the life-carrying body.
In a further possible implementation of the second aspect, the triggering condition comprises one or more of the following conditions: vehicle stop, vehicle speed zero, door lock, vehicle lock, and vehicle flameout.
In a third aspect, embodiments of the present application provide a life protection device comprising a processor and a memory; the processor executes instructions stored in the memory to cause the life protection device to implement the method described in any of the preceding first aspects.
Optionally, the life protection device further comprises a communication interface for receiving and/or transmitting data and/or for providing input and/or output to the processor.
The above embodiment is described taking a processor (or general-purpose processor) for executing a method by calling a computer specification as an example. In particular implementations, the processor may also be a special purpose processor in which the computer instructions are already preloaded in the processor. In the alternative, the processor may include both a special purpose processor and a general purpose processor.
In the alternative, the processor and memory may be integrated in one device, i.e., the processor and memory may be integrated.
In a fourth aspect, embodiments of the present application provide a computer-readable storage medium having instructions stored therein that, when executed by a life protection device, cause the life protection device to implement the method described in any of the preceding aspects.
In a fifth aspect, the present application provides a computer program product comprising computer instructions which, when executed by a life protection device, cause the life protection device to implement the method described in any of the preceding aspects.
Alternatively, the computer program product may be a software installation package or an image file, which may be retrieved and executed on a computing device in case the aforementioned method is required.
The advantages of the technical solutions provided in the second to fifth aspects of the present application may refer to the advantages of the technical solutions in the first aspect, and are not described herein.
Drawings
The drawings that are used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic diagram of a life protection system for a legacy life entity according to an embodiment of the present application;
FIG. 2 is a schematic flow chart of a life protection method for a legacy life entity according to an embodiment of the present application;
FIG. 3 is a schematic diagram of a Fresnel zone provided by an embodiment of the present application;
FIG. 4 is a flow chart of a method for life protection of a legacy living body according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a life protection device according to an embodiment of the present application;
fig. 6 is a schematic structural view of yet another life protection device according to an embodiment of the present application.
Detailed Description
Some technical terms used in the embodiments of the present application are exemplarily explained below.
1.WLAN：
WLAN is a short term for wireless local area network (Wireless Local Area Network), which means that computer devices are interconnected by using a wireless communication technology to form a network system that can communicate with each other and realize resource sharing. The wireless local area network is essentially characterized in that a computer is connected with a network without using a communication cable, and is connected in a wireless mode, so that the construction of the network and the movement of a terminal are more flexible.
2. Fresnel zone:
The fresnel zone refers to a cluster of concentric ellipses corresponding to the focal point of the transceiver device. The fresnel zone-based base model can be expressed using the following formula:
wherein P is 1 And P 2 Is a pair of wireless radio frequency transceiver devices, lambda is a given wavelength of direct signal, the Fresnel zone comprises n layers of concentric ellipses, Q n Is the point on the locus of the n-th layer ellipse.
A moving object generates a reflected signal that varies in amplitude and phase simultaneously. Within a small scale of movement, the amplitude can be seen as constant, with only the phase changing continuously, e.g. breathing causing body fluctuations.
Since an object at the boundary of the odd/even fresnel zone will have an enhancing/canceling effect on the intensity of the superimposed signal, it appears as an alternating enhancing/canceling pattern on the concentric elliptical rings of the fresnel zone. For example, when the path length of a reflected signal of a moving object changes by more than one wavelength, a quasi-sinusoidal signal with 2 pi phase change is generated on the corresponding superimposed signal intensity; if the length of the reflected path change is less than one wavelength, only a partial segment of a sinusoidal-like signal can be generated. According to the interference principle, when an object crosses each fresnel zone boundary, the superimposed signal appears as a peak or trough. The superimposed signal will also remain stable as the reflected signal path length remains unchanged as the object moves along the ellipse. Therefore, when an object continuously spans a plurality of fresnel zone boundaries, the superimposed signal exhibits a sinusoidal-like waveform, and the peaks and valleys of this sinusoidal-like waveform correspond exactly to the boundaries of the odd/even fresnel zones, respectively.
Alternatively, the explanation of the above terms may be applied to the following embodiments.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The system architecture to which the embodiments of the present application are applied is described below. It should be noted that, the system architecture and the service scenario described in the present application are for more clearly describing the technical solution of the present application, and do not constitute a limitation on the technical solution provided by the present application, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of the new service scenario, the technical solution provided by the present application is applicable to similar technical problems.
Referring to fig. 1, fig. 1 is a schematic architecture diagram of a life protection system for a life-carrying body according to an embodiment of the present application, wherein the life protection system for the life-carrying body may also be referred to as a passenger anti-carrying subsystem. As shown in fig. 1, a life protection system of a legacy life body may include a life protection device 101 and a transmitter 102. The following exemplary description of the various devices included in the life protection system of a legacy living body is provided:
the life protection device 101 is a device having processing capability and communication capability, and may be installed inside a vehicle. Further, the life protection device may also operate or control other components within the vehicle. The vehicle can be vehicles of different types such as automobiles, trucks, buses, minibuses, electric vehicles and the like. The life protection device 101 may be an in-vehicle apparatus, for example. For example, the life protection device 101 may receive a reflected signal obtained by reflecting a direct signal through the environment, and may also receive life safety protection operation information sent by a user. Alternatively, the life protection device may be implemented by an in-vehicle apparatus (or simply referred to as an in-vehicle or car machine), for example, the life protection device may be implemented by an in-vehicle apparatus such as a central control screen, a communication box, an intelligent cabin, or the like.
The transmitter 102 is an apparatus or device having the capability to transmit direct signals. By way of example, the transmitter 102 may be a wireless local area network WLAN transmitter.
In the system shown in fig. 1, the transmitter 102 transmits a direct signal into the vehicle under a triggering condition. The life protection device 101 receives a reflected signal obtained after the direct signal is reflected by the environment, the life protection device 101 performs phase superposition on a local oscillator of the direct signal and the reflected signal to obtain a superposition signal, and the life protection device 101 determines whether a left life body exists in the vehicle based on the superposition signal and a basic model of a fresnel zone. The transmitter 102 may be a WLAN transmitter, so the system shown in fig. 1 can determine whether a life-threatening body exists in the vehicle through WLAN, and has low configuration cost and low adaptation difficulty.
Alternatively, the local oscillation of the direct signal may be pre-entered by the user into the life protection device, i.e. the user enters the direct signal into the life protection device 101 as a local oscillation in advance. Alternatively, the local oscillator of the direct signal may be transmitted by a communication message by the transmitter to the life protection device 101.
The method according to the embodiment of the present application will be described in detail.
Referring to fig. 2, fig. 2 is a flow chart of a life protection method for a life-carrying body according to an embodiment of the application. Alternatively, the method may be applied to a life protection system of a legacy living body shown in fig. 1.
The life protection method of the legacy life body as shown in fig. 2 may include a plurality of steps in steps S201 to S203. It should be understood that the present application is described by the order of steps S201 to S203 for convenience of description, and is not intended to be limited to being necessarily performed by the above order. The embodiment of the application is not limited to the execution sequence, execution time, execution times and the like of the one or more steps. The steps S201 to S203 are specifically as follows:
step S201: in a triggered condition, the life protection device receives the reflected signal.
The trigger conditions include one or more of the following: vehicle stop, vehicle speed zero, door lock, vehicle lock, and vehicle flameout.
The life protection device is a device having processing capability and communication capability, and can be installed inside a vehicle. Further, the life protection device may also operate or control other components within the vehicle. The life protection device may be an in-vehicle device, for example.
The reflected signal is obtained by reflecting the direct signal through the environment. Wherein the direct signal is emitted into the vehicle by the emitter. In particular, a transmitter is an apparatus or device that has the capability of transmitting a direct signal. The transmitter may be, for example, a wireless local area network WLAN transmitter.
In one possible implementation, the life protection device automatically turns on the wireless local area network WLAN function while the transmitter is connected in a trigger condition. The transmitter transmits a direct signal into the vehicle. At this time, the life protection device may receive a reflected signal obtained after the direct signal is reflected by the environment.
In a possible embodiment, the transmitter may be arranged on the rear seat central axis of the vehicle and the life protection device is arranged on the head part of the vehicle.
Further, the fresnel zone formed between the transmitter and the life guard may comprise a seating space within the vehicle. Referring to fig. 3, fig. 3 is a schematic diagram of a fresnel zone provided in an embodiment of the present application, where the fresnel zone has a length D1 and a width D2. Illustratively, the linear distance between the emitter and the life guard is the length of the constituent fresnel zone (i.e., D1), and the width of the vehicle is the width of the constituent fresnel zone (i.e., D2).
Alternatively, the life protection device may obtain contact information for one or more users. For example, the user may enter vehicle owner and/or emergency contact information (multiple may be entered) in the life guard. For another example, the life protection device may be networked to query the vehicle's owner and/or emergency contact information.
Step S202: the life protection device carries out phase superposition on the local oscillation signal and the reflection signal to obtain a superposition signal, and determines whether a left life body exists in the vehicle or not based on the superposition signal and a basic model of the Fresnel zone.
Wherein the local oscillator signal corresponds to the direct signal. For example, the local oscillation signal is identical to the direct oscillation signal, or the local oscillation signal and the direct oscillation signal are two paths of signals with the same source.
In one possible implementation, the user may enter the direct signal into the life protection device as a local oscillator signal in advance.
Specifically, the phase is an important parameter describing the state of fluctuation, and can indicate the relationship between the vibration states of the two waves. The phase superposition may be that the amplitudes of two waves are added or subtracted according to a certain rule after the vibration states of the two waves meet.
In the embodiment of the application, the Fresnel zone is a cluster of concentric ellipses taking the receiving and transmitting equipment as a focus, namely a cluster of concentric ellipses taking the transmitter and the life protection device as the focus, and is constructed according to the wavelength of a direct signal by taking the distance between the position of the transmitter and the position of the life protection device as a focal length.
For example, applying a basic model of the fresnel zone may be used to detect body fluctuations of a living being due to respiration, and thus it may be determined whether a legacy living being is present in the vehicle.
In one possible embodiment, the boundary of the fresnel zone is determined by the following formula:
wherein Q is n For a point located on the boundary of the fresnel zone, |p 1 Q n |sum |Q n P 2 | are transmitter and Q respectively n Distance between and life protection device and Q n Distance between |P 1 P 2 And the life protection device determines the fluctuation condition of an object in the riding space of the vehicle according to the superimposed signal and the Fresnel zone, wherein the fluctuation condition comprises fluctuation amplitude and/or fluctuation frequency, and the life protection device calculates and obtains heart rate and respiratory rate data according to the fluctuation condition of the object in the riding space.
Specifically, normal breath induced average relief in the breast is typically 5 mm, with a corresponding motion vector sweep of 63 °. One complete breathing cycle includes inhalation, pause, exhalation, pause. The waveform of the respiratory signal should consist of four small segments: an inhalation waveform, a pause line, an exhalation waveform, and a pause line. Alternatively, in order for the respiratory waveform to be maximally discernable, the angle θ swept should be as large as possible and fall within a monotonically varying interval resembling a sinusoidal waveform. The radian of the θ sweep can be made to just surround pi/2 or 3 pi/2, corresponding to the middle portion of each fresnel zone, enhancing signal discrimination.
The life protection device can calculate heart rate and respiratory rate data based on the superposition signals and the basic model of the Fresnel zone, and therefore the life protection device can determine whether a left life body exists in the vehicle according to the heart rate and respiratory rate data. In this way, whether the vehicle has a life-carrying body or not is determined through the wireless local area network WLAN, and the adapting cost for determining whether the vehicle has the life-carrying body or not is reduced.
Step S203: the life protection device performs a life safety protection operation in a case where it is determined that a life-carrying body exists in the vehicle.
In some possible scenarios, the life protection device may turn on the vehicle ventilation system upon determining that a life-carrying body is present in the vehicle. Thus, the life safety of the left-over life body is greatly ensured.
In some possible scenarios, in the event that it is determined that a legacy vital body is present in the vehicle, the life protection device may also send notification information to the entered vehicle owner and emergency contacts, the notification information indicating that a legacy vital body is present in the vehicle. The transmission is carried out according to the priority, notification information is firstly transmitted to the user with high priority, and when the user with high priority does not answer, the life protection device transmits the notification information to the user with the next priority. In this way, the possibility of receiving notification information can be improved, facilitating the reception of an operation instruction of the next step.
In some possible scenarios, after receiving the notification information, the user may communicate with the legacy living body through the life protection device, and send life security protection operation information according to the current in-vehicle situation. Optionally, the life safety protection operation information may include one or more of unlocking a door, opening a ventilation system, lowering a window, waiting for a contact to go to a park, and the like. After the life protection device receives the life safety protection operation information sent by the user, the vehicle can be controlled and operated according to the life safety protection operation information. Therefore, a contact channel between the user and the life-carrying body can be established, so that the user can send life safety protection operation information according to the condition in the vehicle, and countermeasures can be dynamically selected.
In some possible scenarios, the life protection device may also detect the temperature inside the vehicle. The life protection device receives a reflected signal, which is obtained by reflection of a direct signal from the environment, so that the reflected signal carries information about the environment. After receiving the reflected signals, the life protection device can be combined with various other technologies, for example, the life protection device can carry out subsequent processing by means of comprehensive research of technologies such as artificial intelligence, big data and the like, and can obtain the characteristics of the environment through complex signal processing, so that the temperature of the environment is obtained, namely, the temperature of the environment is detected. Optionally, the perceived environment can be reconstructed on the computer, including identifying people and objects in the environment, detecting actions of the people, and the like. Therefore, the important information of the environment covered by the wireless signal can be rebuilt on the computer without collecting the on-site image and video, and the important information of the environment can be conveniently and rapidly obtained.
In some possible scenarios, in the event that it is determined that a legacy vital body is present in the vehicle, the life protection device may further perform one or more of the following: releasing the door lock, opening the ventilation system, lowering the window, sending out warning signal, etc. Specifically, the warning signal may be sound, light, electricity, vibration, etc. Alternatively, in the case where it is determined that a life-carrying body exists in the vehicle, the life protection device may also perform the aforementioned operation when the temperature in the vehicle reaches a preset value. Thus, when the existence of the life-carrying body in the vehicle is determined, some life safety protection operations are automatically executed, and the life safety of the life-carrying body is greatly ensured.
In some possible scenarios, when the heart rate and/or respiration rate of the legacy living being is abnormal, the life protection device may also send alarm information to the emergency center, the alarm information containing heart rate and respiration rate data of the legacy living being and information of the vehicle. Alternatively, the information of the vehicle may include position information of the vehicle, a license plate number, and the like. Optionally, the alarm information further comprises an alarm reason and owner information. Therefore, when the heart rate and/or the respiratory rate of the life-carrying body are abnormal, the alarm information can be automatically sent, and some necessary information is carried, so that the life-carrying body can be conveniently rescued.
In some possible scenarios, if the vehicle has an autopilot function, the vehicle owner may remotely start the vehicle and the life protection device plans the navigation to travel to the emergency center. Therefore, the vehicle can automatically send the left life body to the emergency center, so that the left life body can get medical treatment as soon as possible, and the rescue is more timely.
In the embodiment shown in fig. 2, the life protection device is capable of determining whether a legacy life entity exists in the vehicle through the wireless local area network WLAN under the triggering condition, so that the adapting cost for determining whether the legacy life entity exists in the vehicle is reduced. In addition, the life protection device can also send notification information to the recorded car owners and emergency contacts when determining that the life bodies are left, so that the life bodies are left. The life protection device may also perform life safety protection operations such as unlocking a door, opening a ventilation system, lowering a window, and sending a warning signal. Thus, when the life-carrying body exists in the vehicle, the life safety of the life-carrying body can be greatly ensured.
The embodiment shown in fig. 2 above includes a plurality of possible solutions, one of which is described below for ease of understanding. It should be understood that some terms, logic, etc. in the scheme shown in fig. 4 are explained, and reference may be made to the embodiment shown in fig. 2.
Referring to fig. 4, fig. 4 is a flowchart of a life protection method for a life-carrying body according to an embodiment of the application. The method comprises the steps of:
s1: in a trigger condition, the passenger anti-carry-over subsystem is activated.
The passenger anti-carry-over subsystem is the life protection system of the aforesaid carry-over life.
S2: turn on the WLAN and connect to the WLAN transmitter.
The WLAN transmitter transmits a direct signal into the vehicle.
S3: the presence of a legacy living body was examined.
The vehicle-mounted system receives a reflected signal obtained after the direct signal is reflected by the environment, the vehicle-mounted system carries out phase superposition on the local oscillation signal and the reflected signal to obtain a superposition signal, the local oscillation signal corresponds to the direct signal, and the vehicle-mounted system determines whether a left-behind life body exists in the vehicle or not through the superposition signal and a basic model based on a Fresnel zone.
S4: the vehicle ventilation system is turned on.
S5: it is determined whether the temperature in the vehicle reaches a preset value.
If the temperature in the vehicle reaches the preset value, executing the steps S6-S7, and if the temperature in the vehicle does not reach the preset value, executing the step S9-.
S6: unlock the door/lower the window and raise an alarm.
S7: it is determined whether the heart rate and respiration rate are normal.
When the heart rate and the respiration rate are abnormal, step S8 is performed.
S8: and sending information to an emergency treatment center, wherein the information carries heart rate and respiratory rate data of the life-carrying body and information of the vehicle.
S9: notifying the car owner and emergency contacts.
The vehicle owner and the emergency contact person can communicate with the legacy life body through the vehicle-mounted system, and can send life safety protection operation information to the vehicle-mounted system according to the legacy life body and the environment in the vehicle.
The life safety protection operation information may be releasing the door lock, opening the ventilation system, lowering the window, waiting for the contact to go to the vehicle parking place, etc.
S10: and executing rescue operation according to the life safety protection operation information.
In the embodiment shown in fig. 4, under the triggering condition, the vehicle-mounted system starts the passenger anti-carry-over subsystem, opens the WLAN and connects with the WLAN transmitter, the vehicle-mounted system determines whether a carry-over life body exists in the vehicle through the WLAN, when the carry-over life body is detected, the vehicle-mounted system determines whether the temperature in the vehicle reaches a preset value, if the temperature in the vehicle reaches the preset value, the vehicle-mounted system controls to open the door lock/lower the window and give an alarm, then the vehicle-mounted system determines whether the heart rate and the respiration rate of the carry-over life body are normal, and when the heart rate and the respiration rate are abnormal, the vehicle-mounted system sends information to the emergency center, and carries heart rate and respiration rate data of the carry-over life body and information of the vehicle. If the temperature in the vehicle does not reach the preset value, the vehicle-mounted system informs the vehicle owner and the emergency contact person, and the vehicle-mounted system executes life safety protection operation according to life safety protection operation information sent by the vehicle owner and the emergency contact person. Thus, when the life-carrying body exists in the vehicle, the life safety of the life-carrying body can be greatly ensured.
The foregoing details of the method according to the embodiments of the present application and the apparatus according to the embodiments of the present application are provided below.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a life protection device according to an embodiment of the application. The life protection device 50 may include a communication unit 501 and a processing unit 502. The life protection device 50 is used to implement the aforementioned life protection method of a legacy life body, such as the life protection method of the legacy life body in the embodiment shown in fig. 2 and 4.
The division of the plurality of units is merely a logical division according to functions, and is not limited to a specific configuration of the life protection device 50. In a specific implementation, some of the functional modules may be subdivided into more tiny functional modules, and some of the functional modules may be combined into one functional module.
In a possible implementation manner, the communication unit 501 is configured to:
under the triggering condition, receiving a reflected signal, wherein the reflected signal is obtained after a direct signal emitted by a transmitter to the interior of a vehicle is reflected by the interior environment of the vehicle; the processing unit 502 is configured to:
carrying out phase superposition on the local oscillation signal and the reflected signal to obtain a superposition signal, and determining whether a legacy life body exists in the vehicle or not based on the superposition signal and a basic model of the Fresnel zone; wherein the local oscillator signal corresponds to the direct signal;
In the event that it is determined that a life-carrying body is present within the vehicle, a life safety protection operation is performed.
In a possible implementation manner, the processing unit 502 is further configured to:
calculating to obtain heart rate and respiratory rate data based on the superposition signals and the basic model of the Fresnel zone;
and determining whether a life-carrying body exists in the vehicle according to the heart rate and the respiratory rate data.
In one possible embodiment, the life protection device constructs the fresnel zone according to the position of the emitter, the position of the life protection device and the wavelength of the direct signal, and the boundary of the fresnel zone is determined by the following formula:
wherein Q is n For a point located on the boundary of the fresnel zone, |p 1 Q n |sum |Q n P 2 I is the transmitter and Q, respectively n Distance between and the life protection device and the Q n Distance between |P 1 P 2 I is the distance between the emitter and the life protection device, n is the number of layers of the Fresnel zone, and lambda is the wavelength of the direct signal;
the processing unit 502 is further configured to:
determining the fluctuation condition of an object in the riding space of the vehicle according to the superposition signal and the Fresnel zone, wherein the fluctuation condition comprises fluctuation amplitude and/or fluctuation frequency;
And calculating to obtain the heart rate and respiratory rate data according to the fluctuation condition of the object in the riding space.
In one possible embodiment, the emitter is arranged on a rear seat central axis of the vehicle, the life protection device is arranged on a head portion of the vehicle, the length of the fresnel zone is a straight line distance between the emitter and the life protection device, and the width of the fresnel zone is the width of the vehicle.
In a possible implementation manner, the processing unit 502 is further configured to obtain a contact address of the user.
In a possible implementation, the communication unit 501 is further configured to send notification information to the user in case a life-carrying body is present in the vehicle, the notification information indicating that a life-carrying body is present in the vehicle.
In a possible implementation, the communication unit 501 is further configured to:
and sending the notification information to the high-priority users in the plurality of users according to the priorities respectively corresponding to the plurality of users. In a possible implementation, the communication unit 501 is further configured to receive life safety protection operation information from the user.
In a possible implementation manner, the processing unit 502 is further configured to perform a control operation on the vehicle according to the life safety protection operation information.
In a possible implementation, the processing unit 502 is further configured to perform, in the event that a legacy living body is present in the vehicle, one or more of the following operations:
releasing the door lock, opening the ventilation system, lowering the window and sending out warning signals.
In a possible implementation manner, the processing unit 502 is further configured to obtain in-vehicle temperature data of the vehicle according to the reflected signal. Further, in the event that it is determined that the legacy living body is present in the vehicle and the temperature in the vehicle reaches a preset temperature threshold, the processing unit is further configured to perform one or more of the following: releasing the door lock, opening the ventilation system, lowering the window and sending out warning signals. Wherein, the warning signal can be sound, light, electricity, vibration, etc. In a possible embodiment, the processing unit 502 is further configured to send alarm information to an emergency center and instruct an autopilot system of the vehicle to drive the vehicle to the emergency center in case of an abnormality in the heart rate and/or the respiration rate of the life-carrying body.
In one possible embodiment, the trigger condition includes one or more of the following conditions: vehicle stop, vehicle speed zero, door lock, vehicle lock, and vehicle flameout.
It should be noted that the above modules (the communication unit 501 and the processing unit 502) are configured to perform relevant steps of the above method. For example, the communication unit 501 is configured to execute the related content of step S201, and the processing unit 502 is configured to execute the related content of S202-S203.
Fig. 6 is a schematic structural diagram of a life protection device 60 according to an embodiment of the present application. The life protection device is a device with processing capabilities, where the device may be a physical device, such as a server (e.g., rack-mounted server), a host, etc., and may be a virtual device, such as a virtual machine, container, etc.
As shown in fig. 6, the life protection device 60 includes: processor 601 and memory 602, as well as one or more programs, may include a communication interface 603. It should be understood that the present application is not limited to the number of processors, memories in life guard 60.
The processor 601 is a module for performing operations, and may include a central processing unit (central processing unit, CPU), a graphics processor (graphics processing unit, GPU), a microprocessor (micro processor, MP), a digital signal processor (digital signal processor, DSP), a micro control unit (Microcontroller Unit, MCU), or one or more integrated circuits for controlling the execution of the above program.
The memory 602 is used to provide storage space in which application data, user data, operating systems, computer programs, and the like may be optionally stored. The Memory 602 may include, but is not limited to, read Only Memory (ROM) or other type of static storage device that may store static information and instructions, random access Memory (random access Memory, RAM) or other type of dynamic storage device that may store information and instructions, electrically erasable programmable read Only Memory (Electrically Erasable Programmable Read Only Memory, EEPROM), compact disc read Only Memory (Compact Disc Read Only Memory, CD ROM) or other optical disk storage, optical disk storage (including compact discs, laser discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
The memory 602 may be stand alone and may be coupled to the processor 601 via a bus. The memory 602 may also be integral with the processor 601.
The communication interface 603 is for providing an information input or output for the at least one processor. And/or the communication interface 603 may be used to receive externally transmitted data and/or transmit data to the outside. The communication interface 603 may be a wired link interface including, for example, an ethernet cable, or may be a wireless link (Wi-Fi, bluetooth, general wireless transmission, other wireless communication technologies, etc.) interface. Optionally, the communication interface 603 may also include a transmitter (e.g., radio frequency transmitter, antenna, etc.) or a receiver, etc. coupled to the interface.
In an embodiment of the present application, the one or more programs are stored in the memory 602 in the form of program code and configured to be executed by the processor 601, the programs including instructions for implementing the steps in the aforementioned life protection method of a legacy living body. Such as the life protection method of the legacy living body shown in fig. 2 and 4. I.e. the memory 602 stores executable instructions that the processor 601 executes to implement the aforementioned life protection method of a legacy life entity, e.g. in the embodiments of fig. 2, 4. That is, the memory 602 has instructions stored thereon for performing a life protection method of a legacy life entity.
Alternatively, the memory 602 has stored therein executable instructions that are executed by the processor 601 to implement the functions of one or more of the aforementioned communication units and processing units (or devices), respectively, to implement a life-preserving method of a legacy life entity.
Embodiments of the present application also provide a computer program product comprising instructions. The computer program product may be software or a program product containing instructions capable of running on a computing device or stored in any useful medium. The computer program instructions are for implementing the aforementioned life protection method of a legacy life entity, such as the life protection method of a legacy life entity in the embodiments of fig. 2, 4.
The embodiment of the application also provides a computer readable storage medium. The computer-readable storage medium includes instructions for implementing the aforementioned life protection method of a legacy life entity, such as the life protection method of a legacy life entity in the embodiments of fig. 2, 4.
The computer readable storage medium may be any available medium that can be stored by the life protection device, or a data storage device such as a data center containing one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid state disk), etc.
In embodiments of the application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
Reference to "at least one" in embodiments of the application means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a. b, c, (a and b), (a and c), (b and c), or (a and b and c), wherein a, b, c may be single or plural. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: three cases of a alone, a and B together, and B alone, wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship.
And, unless otherwise indicated, the use of ordinal numbers such as "first," "second," etc., by embodiments of the present application is used for distinguishing between multiple objects and is not used for limiting a sequence, timing, priority, or importance of the multiple objects. For example, the first content providing apparatus and the second content providing apparatus are merely for convenience of description, and are not indicative of differences in apparatus structures, deployment orders, importance levels, and the like of the first content providing apparatus and the first content providing apparatus.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program for instructing relevant hardware, where the program may be stored in a computer readable storage medium, and the storage medium may be a read only memory, a magnetic disk or an optical disk, etc.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A life protection method of a legacy life body, characterized in that a transmitter is installed at one end of a vehicle and a life protection device is installed at the other end, the method comprising:
under a triggering condition, the transmitter transmits a direct signal to the interior of the vehicle, the life protection device receives a reflected signal obtained after the direct signal is reflected by the interior environment of the vehicle, and a Fresnel zone formed between the life protection device and the transmitter covers the riding space of the vehicle;
the life protection device carries out phase superposition on the local oscillation signal and the reflection signal to obtain a superposition signal, and determines whether a legacy life body exists in the vehicle or not based on the superposition signal and a basic model of the Fresnel zone; wherein the local oscillator signal corresponds to the direct signal;
the life protection device performs a life safety protection operation in a case where it is determined that a life-carrying body exists in the vehicle.
2. The method of claim 1, wherein the life protection device determining whether a legacy life entity is present within the vehicle based on the superimposed signal and a base model of the fresnel zone comprises:
The life protection device calculates and obtains heart rate and respiratory rate data based on the superposition signals and the basic model of the Fresnel zone;
the life protection device determines whether a legacy life entity is present in the vehicle based on the heart rate and respiration rate data.
3. The method of claim 2, wherein the life protection device calculates heart rate and respiration rate data based on the superimposed signal and a base model of the fresnel zone, comprising:
the life protection device constructs the Fresnel zone according to the position of the emitter, the position of the life protection device and the wavelength of the direct signal, and the boundary of the Fresnel zone is determined by the following formula:
wherein Q is n For a point located on the boundary of the fresnel zone, |p 1 Q n |sum |Q n P 2 I is the transmitter and Q, respectively n Distance between and the life protection device and the Q n Distance between each otherFrom, |P 1 P 2 I is the distance between the emitter and the life protection device, n is the number of layers of the Fresnel zone, and lambda is the wavelength of the direct signal;
the life protection device determines the fluctuation condition of an object in the riding space of the vehicle according to the superposition signal and the Fresnel zone, wherein the fluctuation condition comprises fluctuation amplitude and/or fluctuation frequency;
The life protection device calculates and obtains the heart rate and respiratory rate data according to the fluctuation condition of the object in the riding space.
4. A method according to any one of claims 1-3, characterized in that said life protection device performs life safety protection operations in case it is determined that there is a life-carrying body in said vehicle, in particular comprising:
the life protection device acquires the contact information of the user;
the life protection device sends notification information to the user, the notification information being used to indicate that a legacy life entity is present in the vehicle.
5. The method of claim 4, wherein the number of users is a plurality, and wherein the life protection device sends notification information to the users, comprising:
and the life protection device sends the notification information to the high-priority users in the plurality of users according to the priorities respectively corresponding to the plurality of users.
6. The method according to claim 4, wherein the life protection device performs life safety protection operations in case it is determined that a legacy life entity is present in the vehicle, in particular further comprising:
the life protection device sends alarm information to an emergency center and instructs an automatic driving system of the vehicle to drive the vehicle to the emergency center in the case that the heart rate and/or the respiratory rate of the life-carrying body are abnormal.
7. The method of claim 1, wherein the trigger condition comprises one or more of the following conditions: vehicle stop, vehicle speed zero, door lock, vehicle lock, and vehicle flameout.
8. A life protection device, the life protection device comprising:
a communication unit configured to:
under a triggering condition, receiving a reflected signal, wherein the reflected signal is obtained after a direct signal emitted by a transmitter to the inside of a vehicle is reflected by the environment in the vehicle, the life protection device is arranged at one end of the vehicle, the transmitter is arranged at the other end of the vehicle, and a Fresnel zone formed between the life protection device and the transmitter covers a riding space of the vehicle;
a processing unit for:
carrying out phase superposition on the local oscillation signal and the reflected signal to obtain a superposition signal, and determining whether a legacy life body exists in the vehicle or not based on the superposition signal and a basic model of the Fresnel zone; wherein the local oscillator signal corresponds to the direct signal;
in the event that it is determined that a life-carrying body is present within the vehicle, a life safety protection operation is performed.
9. A life protection device comprising a processor and a memory, the memory having stored therein a program comprising instructions for performing the steps in the method of any of claims 1-7.
10. A computer readable storage medium for storing a computer program comprising instructions for performing the steps of the method according to any one of claims 1-7.
CN202310701419.9A 2023-06-13 2023-06-13 Life protecting method and relevant device for life-carrying body Pending CN116620210A (en)

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Application Number Priority Date Filing Date Title
CN202310701419.9A CN116620210A (en) 2023-06-13 2023-06-13 Life protecting method and relevant device for life-carrying body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310701419.9A CN116620210A (en) 2023-06-13 2023-06-13 Life protecting method and relevant device for life-carrying body

Publications (1)

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CN116620210A true CN116620210A (en) 2023-08-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
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