WO2022228165A1 - 基于毫米波雷达检测车内活体的方法及装置 - Google Patents

基于毫米波雷达检测车内活体的方法及装置 Download PDF

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Publication number
WO2022228165A1
WO2022228165A1 PCT/CN2022/087284 CN2022087284W WO2022228165A1 WO 2022228165 A1 WO2022228165 A1 WO 2022228165A1 CN 2022087284 W CN2022087284 W CN 2022087284W WO 2022228165 A1 WO2022228165 A1 WO 2022228165A1
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Prior art keywords
module
living body
millimeter
wave radar
alarm
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PCT/CN2022/087284
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English (en)
French (fr)
Inventor
李从志
李男难
张盛斌
梁国铮
张吉
李智攀
张我弓
Original Assignee
南京楚航科技有限公司
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Application filed by 南京楚航科技有限公司 filed Critical 南京楚航科技有限公司
Priority to DE112022000010.4T priority Critical patent/DE112022000010T5/de
Priority to DE212022000038.2U priority patent/DE212022000038U1/de
Publication of WO2022228165A1 publication Critical patent/WO2022228165A1/zh

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/886—Radar or analogous systems specially adapted for specific applications for alarm systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/0022—Radiation pyrometry, e.g. infrared or optical thermometry for sensing the radiation of moving bodies
    • G01J5/0025—Living bodies
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/06—Systems determining position data of a target
    • 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
    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source

Definitions

  • the present application relates to the technical field of millimeter-wave radar, for example, to a method and device for detecting living bodies in a vehicle based on a millimeter-wave radar.
  • the millimeter wave used by the millimeter wave radar is usually 30 to 300 GHz in the frequency domain (wavelength is 1 to 10 mm).
  • the wavelength of millimeter wave is between centimeter wave and light wave, so millimeter wave has the advantages of microwave guidance and photoelectric guidance.
  • the millimeter-wave seeker has the characteristics of small size, light weight and high spatial resolution.
  • the millimeter-wave seeker has a strong ability to penetrate fog, smoke, and dust, and has the characteristics of all-weather (except heavy rain) all day.
  • the anti-jamming and anti-stealth capabilities of the millimeter-wave seeker are also superior to other microwave seekers.
  • the present application provides a method for detecting a living body in a vehicle based on a millimeter wave radar, so as to improve the situation in which it is inconvenient for a car in the related art to detect a living body in the vehicle.
  • the present application provides a method for detecting a living body in a vehicle based on a millimeter wave radar
  • the millimeter wave radar includes a perception module, a control module, and an analysis module, and the method includes:
  • the millimeter-wave radar sends a signal, and the sensing module detects the object to be measured in the vehicle to obtain a detection signal;
  • the analysis module uses a micro-Doppler method to analyze the detection signal to determine whether the object to be detected is a living body or a non-living body;
  • control module controls the alarm component to alarm, and sends remote alarm information to the target terminal through the first communication module;
  • the object to be measured is photographed by a video monitoring module, the shape and type of the object to be measured are determined, and a video is produced and sent to the target terminal remotely;
  • the temperature of the object to be measured is remotely measured by an infrared temperature measurement module to determine the temperature signal of the object to be measured, and the temperature signal is remotely sent to the target terminal.
  • a device for detecting living bodies in a vehicle based on a millimeter-wave radar comprising: a millimeter-wave radar, an alarm component, a first communication module, and a target terminal, the millimeter-wave radar includes:
  • the perception module is set to detect the object to be tested in the vehicle and obtain the detection signal
  • an analysis module configured to analyze the detection signal using a micro-Doppler method to determine whether the object to be measured is a living body or a non-living body;
  • a control module configured to control the alarm component to give an alarm in response to determining that the object to be measured is a living body, and send remote alarm information to the target terminal through the first communication module.
  • FIG. 1A is a flowchart of a method for detecting a living body in a vehicle based on a millimeter wave radar according to an embodiment of the present application.
  • FIG. 1 is an architectural diagram of an in-vehicle living body detection system according to an embodiment of the present application.
  • FIG. 2 is a structural diagram of a device for detecting living bodies in a vehicle provided by a millimeter wave radar according to an embodiment of the present application.
  • FIG. 3 is a block diagram of the working principle of the alarm component in the embodiment of the present application.
  • FIG. 4 is a working flowchart of the video monitoring module and the infrared temperature measurement module in the embodiment of the application.
  • FIG. 5 is a partial exploded structural diagram of the in-vehicle living body detection device provided by the embodiment of the present application.
  • FIG. 6 is an installation diagram of a millimeter-wave radar on a vehicle according to an embodiment of the present application.
  • the sensing module 2 on the millimeter-wave radar 1 detects the objects in the car, and adopts the micro-Doppler method to minimize false positives and false negatives, and quickly identify sleeping babies;
  • the alarm component 5 is controlled to start and alarm through the microcontroller module 15 that comes with the millimeter-wave radar 1, and remote alarm information is sent to the driver through the 5G communication module;
  • the video monitoring module 17 Through the operation and rotation of the video monitoring module 17, it is convenient and quick to take a picture of the detected object in the vehicle, and the shape and type of the object are determined, and the video is made and sent to the driver's mobile phone remotely;
  • the infrared temperature measurement module 18 is used to remotely measure the temperature of the object, so as to quickly determine the temperature signal of the detected object, and send the signal to the driver's mobile phone remotely.
  • a method for detecting living bodies in a vehicle based on millimeter wave radar includes:
  • Step S110 the sensing module 2 detects the object to be detected in the vehicle to obtain a detection signal.
  • Step S120 the analysis module 3 uses a micro-Doppler method to determine whether the object to be measured is a living body or a non-living body.
  • Step S130 in response to determining that the object to be measured is a living body, the control module 4 controls the alarm component 5 to give an alarm, and sends remote alarm information to the target terminal 19 through the first communication module.
  • Step S140 the object to be measured is photographed by the video monitoring module 17 , the shape and type of the object to be measured are determined, and a video is produced and sent to the target terminal 19 remotely.
  • Step S150 remotely measure the temperature of the object to be measured through the infrared temperature measurement module 18 to determine a temperature signal of the object to be measured, and remotely send the temperature signal to the target terminal 19 .
  • the detection signal is processed to obtain sampled data;
  • the micro-Doppler method is used to perform micro-motion detection and respiratory information detection on the sampled data, and determine whether the object to be detected is a living body;
  • a specific location of the living body is detected using the DOA spectrum.
  • the millimeter-wave radar when the millimeter-wave radar sends a signal to detect the object to be measured, if the object to be measured is a living body, the living body has breathing behavior and may move slightly. Therefore, the reflected signal received by the millimeter-wave radar will reflect The fretting situation and breathing situation of the living body. For example, if the living body in the car is a sleeping baby, the breathing of the baby will cause the slight ups and downs of the chest cavity. When the millimeter-wave radar is detected, it can detect the baby's chest micro-movement and breathing information.
  • a device for detecting living bodies in a vehicle based on a millimeter-wave radar 1 includes a millimeter-wave radar 1, and the millimeter-wave radar 1 includes,
  • Sensing module 2 the sensing module 2 is set to detect the object to be measured in the vehicle to obtain a detection signal
  • the analysis module 3 is set to use the micro-Doppler method to process the detection signal, and determine whether the object to be detected is a living body or a non-living body;
  • Control module 4 the control module 4 is configured to control the alarm component to give an alarm in response to determining that the object to be measured is a living body, and send remote alarm information to the target terminal through the first communication module.
  • the sensing module 2 includes an antenna module 16
  • the analysis module 3 includes a microcontroller module 15 and a storage module 13
  • the control module 4 includes the microcontroller module 15 and a mode selection module 12 .
  • the antenna module 16 is configured to transmit electromagnetic waves and receive electromagnetic waves reflected by the detection object, that is, the antenna module 16 transmits a signal and receives the detection signal returned by the to-be-detected object;
  • the storage module 13 is configured to store the data of the in-vehicle living body detection system and the processing data of the microcontroller module 15;
  • the microcontroller module 15 is configured to demodulate the detection signal and the signal sent by the millimeter wave radar to determine whether the object to be detected is a living body, and in response to determining that the object to be detected is a living body, control the The alarm component alarms, and sends remote alarm information to the target terminal through the first communication module;
  • the mode selection module 12 is configured to control the arrangement of the array of the antenna modules 16 and the physical channels. Different array arrangements and physical channels correspond to different detection modes, and different detection modes can be applied to different scenarios of detecting living bodies in the vehicle. The first detection mode and the second detection mode correspond to different array arrangements and occupied physical channels of the antenna modules 16, and the mode selection module 12 needs to be selected for different detection scenarios.
  • the antenna module 16 on the millimeter-wave radar 1 can be a MIMO wide-angle antenna, which is used to increase the spatial detection resolution and accurately identify the position of the living body.
  • the millimeter-wave radar 1 further includes a timing module 14, the timing module 14 is electrically connected to the output end of the antenna module 16, and is configured to send multiple alarm messages at a specified frequency.
  • the first communication module in FIG. 1 may be a 5G communication module
  • the target terminal 19 may be a mobile phone in FIG. 1 , such as a driver's mobile phone.
  • the second communication module may be a wireless communication module.
  • the millimeter-wave radar may further include a crystal oscillator module, a reset module, a power detection module, a power distribution module, a signal input module, a signal output module, and a second communication module.
  • the microcontroller module 15 controls the antenna radar to send out electromagnetic waves, and uses the electromagnetic waves to detect the object to be measured, so as to detect the physical sign information and living body characteristic information, and the mode selection module 12 is convenient for the antenna module.
  • 16 physical channels of 3 transmissions and 4 receptions and the arrangement of the antenna array are selected and controlled, which increases the spatial detection resolution by 3 times.
  • the alarm assembly 5 includes a sound and light alarm 51 and a flashing alarm 52.
  • the sound and light alarm 51 is electrically connected to the millimeter-wave radar 1 through a communication line
  • the flashing alarm 52 is located in the On the outside of the vehicle body, the electrical connection terminal of the flashing alarm 52 is electrically connected to the power supply equipment in the vehicle through a magnetic charging cable.
  • the operation of the sound and light alarm 51 is convenient for waking up the sleeping infants and young children in the vehicle, and the flashing alarm 52 is easily controlled to give an alarm through the sound, thereby facilitating the attraction and rescue of the infants and young children around the crowd.
  • the flashing alarm 52 is easily controlled to give an alarm through the sound, thereby facilitating the attraction and rescue of the infants and young children around the crowd.
  • it is convenient to disassemble and assemble the flashing alarm 52 through the magnetic charging cable.
  • the working process of the video surveillance module and the infrared temperature measurement module includes:
  • step S210 the video monitoring module 17 takes a picture of the object to be measured, and determines the shape of the object to be measured.
  • step S220 the temperature of the object to be measured is measured by the infrared temperature measurement module 18 to determine the temperature of the object to be measured.
  • the partial exploded structure diagram of the in-vehicle living body detection device the millimeter-wave radar 1 is integrally arranged on the circuit board 9 , the circuit board 9 is arranged between the lower cover 8 and the radome 10 , and the lower surface of the circuit board 9 is smeared
  • thermal conductive silica gel 11 There is thermal conductive silica gel 11, and the bottom surface of the thermal conductive silica gel 11 is in contact with the lower cover 8, the radome 10 is locked on the lower cover 8 through three layers of screws, and the millimeter wave radar 1 is respectively connected with the alarm component 5, the video monitoring module 17 and the infrared temperature measurement module. 18 Make electrical connections. It is not only convenient for disassembly and assembly, but also for rapid heat dissipation, and it is also convenient to place the millimeter-wave radar in different positions, which expands the detection range.
  • the heat dissipation effect of the millimeter-wave radar 1 is improved by the thermally conductive silica gel 11, and the radome 10 is easily disassembled by means of three-layer screw locking, thereby facilitating the maintenance of the millimeter-wave radar 1, Moreover, it is also convenient to install the millimeter-wave radar itself on the vehicle body by means of a buckle, with a simple structure and convenient operation.
  • the video monitoring module 17 is a pan-tilt camera 7, and the top of the pan-tilt camera 7 has a magnetic base.
  • the pan-tilt camera 7 communicates with the microcontroller module 15 inside the millimeter-wave radar 1 through the second communication module. Wireless communication connection.
  • the operation of the PTZ camera is controlled by the microcontroller module, so that the object to be measured can be monitored and photographed through the PTZ camera, and the placement position of the PTZ camera can be adjusted arbitrarily through the second communication module.
  • the infrared thermometer 18 is an infrared thermometer 6, and the infrared thermometer 6 is fixedly connected to the head of the PTZ camera 7 through a tightening member, and the infrared thermometer 6 and the head of the PTZ camera 7 run synchronously. , and the temperature measurement direction of the infrared thermometer 6 is consistent with the monitoring direction of the PTZ camera 7.
  • the infrared thermometer 6 is connected by wireless communication with the microcontroller module 15 inside the millimeter-wave radar 1 through the second communication module. Both the thermometer 6 and the PTZ camera 7 are electrically connected to the power supply in the car through a magnetic charging cable, and the second communication module is a ZigBee wireless communication chip with a frequency of 2.4 GHz. Wireless communication is realized, and the infrared thermometer is driven to rotate through the operation of the PTZ camera, which is convenient to detect the temperature of the object to be measured with the infrared thermometer.
  • pan-tilt camera 7 it is convenient to fix the pan-tilt camera 7 on the lower cover 8, the radome 10 or any position inside the vehicle body through the magnetic base, and supply power through the magnetic charging cable, so that the pan-tilt camera 7 can be easily fixed.
  • the millimeter-wave radar itself it is also easy to separate the pan-tilt camera 7 from the millimeter-wave radar itself, expanding the installation method and expanding the placement range, and the operation of the pan-tilt camera 7 is convenient to drive the infrared synchronously.
  • the rotation of the thermometer 6 realizes the camera monitoring of the object to be measured through the PTZ camera 7, and it is also convenient to check the temperature of the object to be measured through the infrared thermometer 6, which further improves the accuracy of the object to be measured.
  • the second communication module realizes wireless communication and control, which is convenient for disassembly and adjustment.
  • FIG. 6 is an installation diagram of the millimeter-wave radar on the vehicle in the embodiment of the present application.
  • the shaded positions shown in the figure can be placed in the millimeter-wave radar 1 .
  • the millimeter wave radar 1 may be placed in any of the positions shown.
  • This application provides a method for detecting a living body in a vehicle based on a millimeter-wave radar.
  • the micro-Doppler method is used to determine whether there is a living body, and DOA estimation is used to detect the specific location of the living body, so as to minimize false alarms and false alarms, and quickly identify deep sleep. It can effectively filter out clutter such as mechanical vibration, effectively distinguish between living and non-living bodies, MIMO wide-angle antenna, increase spatial detection resolution, accurately identify the location of living bodies, and facilitate the shape of living bodies through PTZ cameras and infrared thermometers. and temperature, further improving the detection accuracy.

Abstract

本申请提供了一种基于毫米波雷达检测车内活体的方法及装置，毫米波雷达包括感知模块，控制模块，以及分析模块，方法包括：毫米波雷达发出信号，感知模块对车内的待测物体进行检测，获取检测信号；分析模块使用微多普勒方法对检测信号进行分析，以确定所述待测物体为活体或非活体；响应于确定待测物体为活体，控制模块控制报警组件进行报警，并通过第一通信模块向目标终端发送远程报警信息；通过视频监控模块对待测物体进行摄像，确定待测物体的形状及种类，并制作视频远程发送到目标终端；通过红外测温模块对待测物体进行远程测温，以确定待测物体的温度信号，并将温度信号远程发送到目标终端。

Description

基于毫米波雷达检测车内活体的方法及装置
本申请要求在2021年4月26日提交中国专利局、申请号为202110452125.8的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及毫米波雷达技术领域，例如涉及一种基于毫米波雷达检测车内活体的方法及装置。
背景技术
毫米波雷达使用的毫米波，频域通常为30～300GHz(波长为1～10mm)。毫米波的波长介于厘米波和光波之间，因此毫米波兼有微波制导和光电制导的优点。同厘米波导引头相比，毫米波导引头具有体积小、质量轻和空间分辨率高的特点。与红外、激光、电视等光学导引头相比，毫米波导引头穿透雾、烟、灰尘的能力强，具有全天候(大雨天除外)全天时的特点。另外，毫米波导引头的抗干扰、反隐身能力也优于其他微波导引头。
相关技术中使用的汽车在使用过程中，由于座椅的遮挡以及车主长时间的驾驶疲劳，易造成车主忽略车后座处熟睡的婴幼儿，进而在车主关闭车门后，因车体内环境闷热以及氧气不足，从而造成不必要的悲剧。
发明内容
本申请提供一种基于毫米波雷达检测车内活体的方法，以改善相关技术中的汽车不便对车内活体进行检测的情况。
本申请的提供了一种基于毫米波雷达检测车内活体的方法，
所述毫米波雷达包括感知模块，控制模块，以及分析模块，所述方法包括：
所述毫米波雷达发出信号，所述感知模块对车内的待测物体进行检测，获得检测信号；
所述分析模块使用微多普勒方法对所述检测信号进行分析，确定所述待测物体为活体或非活体；
响应于确定所述待测物体为活体，所述控制模块控制报警组件进行报警，并通过第一通信模块向目标终端发送远程报警信息；
通过视频监控模块对所述待测物体进行摄像，确定所述待测物体的形状及种类并制作视频远程发送到所述目标终端；
通过红外测温模块对所述待测物体进行远程测温，以确定所述待测物体的温度信号，并将所述温度信号远程发送到所述目标终端。
一种基于毫米波雷达检测车内活体的装置，包括毫米波雷达，报警组件，第一通信模块，以及目标终端，所述毫米波雷达包括：
感知模块，设置为对车内的待测物体进行检测，获得检测信号；
分析模块，设置为使用微多普勒方法对检测信号进行分析，以确定所述待测物体为活体或非活体；
控制模块，设置为响应于确定所述待测物体为活体，控制所述报警组件进行报警，并通过所述第一通信模块向所述目标终端发送远程报警信息。
附图说明
图1A为本申请实施例提供的一种基于毫米波雷达检测车内活体的方法流程图。
图1为本申请实施例的车内活体检测系统架构图。
图2为本申请实施例提供的一种毫米波雷达检测车内活体的装置结构图。
图3为本申请实施例中报警组件的工作原理框图。
图4为本申请实施例中视频监控模块以及红外测温模块的工作流程图。
图5为本申请实施例提供的车内活体检测装置的局部爆炸结构图。
图6为本申请实施例中毫米波雷达在汽车上的安装图。
图中：1、毫米波雷达；2、感知模块；3、分析模块；4、控制模块；5、报警组件；6、红外测温仪；7、云台摄像头；8、下盖；9、电路板；10、天线罩；11、导热硅胶；12、模式选择模块；13、存储模块；14、定时模块；15、微控制器模块；16、天线模块；17、视频监控模块；18、红外测温模块；19、目标终端；51、声光报警器；52、闪光报警器。
具体实施方式
本申请实施例提供的一种基于毫米波雷达检测车内活体的方法包括以下步骤：
通过毫米波雷达1上的感知模块2对车内的物体进行检测，采用微多普勒方法，最大程度减少误报漏报，快速识别熟睡的婴儿；
根据待测物体是否具备活体特征，并有效滤掉机械振动等杂波，有效区分活体与非活体；
若是活体，则通过毫米波雷达1上自带的微控制器模块15来控制报警组件5进行启动并进行报警，且通过5G通讯模块向驾驶员发送远程报警信息；
通过视频监控模块17的运行以及转动，方便快速对车内的检测物体进行摄像，且确定物体的形状及种类，并制作成视频远程发送到驾驶员手机上；
通过红外测温模块18对物体进行远程测温，从而快速确定检测物体的温度信号，并将信号远程发送到驾驶员手机上。
参见图1A，一种基于毫米波雷达检测车内活体的方法，包括：
步骤S110，所述感知模块2对车内的待测物体进行检测，获得检测信号。
步骤S120，所述分析模块3使用微多普勒方法，以确定所述待测物体为活体或非活体。
步骤S130，响应于确定所述待测物体为活体，所述控制模块4控制报警组件5进行报警，并通过第一通信模块向目标终端19发送远程报警信息。
步骤S140，通过视频监控模块17对所述待测物体进行摄像，确定所述待测物体的形状及种类并制作视频远程发送到所述目标终端19。
步骤S150，通过红外测温模块18对所述待测物体进行远程测温，以确定所述待测物体的温度信号，并将所述温度信号远程发送到所述目标终端19。
在一实施例中，对检测信号进行处理得到采样数据；使用微多普勒方法对采样数据进行微动检测以及呼吸信息检测，并判断待测物体是否为活体；
响应于确定所述待测物体为活体，使用DOA频谱检测活体的具体位置。
在一实施例中，毫米波雷达发出信号对待测物体进行检测时，若待测物体为活体，活体具有呼吸行为，且可能会发生轻微移动，因此，毫米波雷达接收到的反射信号会反映出活体的微动情况以及呼吸情况。例如，车内活体为熟睡的婴幼儿，婴幼儿呼吸会引起胸腔的轻微起伏，毫米波雷达在进行检测时，可以探测到婴幼儿的胸腔微动，以及呼吸信息。
如图1和图2所示，一种基于毫米波雷达1检测车内活体的装置，包括毫米波雷达1，毫米波雷达1包括，
感知模块2，感知模块2设置为对车内的待测物体进行检测，获得检测信号；
分析模块3，分析模块3设置为使用微多普勒方法对所述检测信号进行处理，确定所述待测物体为活体或非活体；
控制模块4，控制模块4设置为响应于确定所述待测物体为活体，控制所述报警组件进行报警，并通过所述第一通信模块向所述目标终端发送远程报警信息。
在一实施例中，感知模块2包括天线模块16，所述分析模块3包括微控制器模块15和存储模块13，所述控制模块4包括所述微控制器模块15和模式选择模块12。
天线模块16，设置为发射电磁波并接受检测对象反射的电磁波，即天线模块16发射信号并接收所述待检测物体返回的所述检测信号；
存储模块13，设置为存储车内活体检测系统的数据以及微控制器模块15的处理数据；
微控制器模块15，设置为所述检测信号以及所述毫米波雷达发出的信号进行解调，以确定所述待检测物体是否为活体，响应于确定所述待检测物体为活体，控制所述报警组件进行报警，并通过所述第一通信模块向所述目标终端发送远程报警信息；
模式选择模块12，设置为对天线模块16的阵列的排布以及物理通道进行控制。不同的阵列排布和物理信道对应不同的检测模式，不同的检测模式可以适用于不同检测车内活体的场景，例如对距离较近的待测物进行检测采用第一检测模式，对距离较远的待测物进行检测采用第二检测模式，第一检测模式和第二检测模式对应的天线模块16的阵列排布以及占用的物理信道不同，需要模式选择模块12针对不同的检测场景进行选择。
毫米波雷达1上的天线模块16可以为MIMO广角天线，用于增加空间探测分辨率，准确识别活体位置。
毫米波雷达1上还包括定时模块14，定时模块14与天线模块16的输出端电性连接，设置为以规定频率发送多次报警信息。
在一实施例中，图1中的第一通信模块可以为5G通信模块，目标终端19可以为图1中的手机，例如驾驶员的手机。第二通信模块可以为无线通信模块。
在一实施例中，毫米波雷达还可以包括晶振模块，复位模块，电源侦测模块，电源分配模块，信号输入模块，信号输出模块，第二通信模块。
本申请在使用过程中，通过微控制器模块15控制天线雷达发出电磁波，并通过电磁波来对待测物体进行检测，从而检测到物体体征信息与活体特征信息，而且通过模式选择模块12便于对天线模块16的3发4收的物理通道以及天线阵列的排布进行选择控制，将空间探测分辨率提升了3倍。
如图3所示的报警组件的工作原理框图，报警组件5包括声光报警器51以及闪光报警器52，声光报警器51通过通讯线与毫米波雷达1进行电连接，闪光报警器52位于车体外侧，闪光报警器52的接电端通过磁吸式充电线与汽车内的供电设备进行电连接。
本申请在使用过程中，通过声光报警器51的运行便于对车体内熟睡的婴幼儿进行叫醒，而且通过声音便于控制闪光报警器52进行报警，进而便于对周围人群进行吸引解救婴幼儿，而通过磁吸式充电线则便于对闪光报警器52进行拆装。
如图4所示的视频监控模块以及红外测温模块的工作流程图。
视频监控模块和红外测温模块工作过程包括：
步骤S210，视频监控模块17对待测物体进行摄像，确定待测物体的形状。
步骤S220，通过红外测温模块18对待测物体进行测温，以确定待测物体的温度。
如图5所示的车内活体检测装置的局部爆炸结构图，毫米波雷达1集成设置在电路板9上，电路板9设置在下盖8与天线罩10之间，且电路板9下表面涂抹有导热硅胶11，且导热硅胶11底面与下盖8相接触，天线罩10通过三层螺丝锁附在下盖8上，毫米波雷达1分别与报警组件5、视频监控模块17以及红外测温模块18进行电连接。不仅方便拆装，也便于进行快速散热，而且也方便将毫米波雷达放置在不同位置处，扩大了检测的范围。
本申请在使用过程中，通过导热硅胶11提高了对毫米波雷达1的散热效果，而通过三层螺丝锁附的方式则便于对天线罩10进行拆卸，进而方便对毫米波雷达1进行检修，而且也便于将毫米波雷达本身通过卡扣的方式安装在车身上，结构简单，操作方便。
如图5所示，视频监控模块17为云台摄像头7，且云台摄像头7的顶端具有磁吸底座，云台摄像头7通过第二通信模块与毫米波雷达1内部的微控制器模块15进行无线通信连接。通过微控制器模块来对云台摄像头的运行进行控制，便于通过云台摄像头对待测物体进行监控摄像，而且通过第二通信模块便于对云台摄像头的放置位置进行任意调节。
红外测温模块18为红外测温仪6，且红外测温仪6通过束紧件固定连接在 云台摄像头7的头部上，红外测温仪6与云台摄像头7的头部进行同步运行，且红外测温仪6的测温方向与云台摄像头7的监控方向一致，红外测温仪6通过第二通信模块与毫米波雷达1内部的微控制器模块15进行无线通信连接，红外测温仪6以及云台摄像头7均通过磁吸式充电线与汽车内的供电电源进行电连接，第二通信模块为频率为2.4GHz的ZigBee无线通信芯片。实现了无线通讯，通过云台摄像头的运行来带动红外测温仪进行转动，便于同红外测温仪对待测物体的温度进行检测。
本申请在使用过程中，通过磁吸底座便于将云台摄像头7固定在下盖8、天线罩10或车体内部任一位置，且通过磁吸式充电线进行供电，实现了将云台摄像头7与毫米波雷达本身进行组合设置在一起，也便于将云台摄像头7与毫米波雷达本身进行分离，扩大了安装方式，也扩大了放置范围，而通过云台摄像头7的运行则便于同步带动红外测温仪6进行转动，实现了通过云台摄像头7对待测物体进行摄像监控，也便于通过红外测温仪6对待测物体的温度进行检查，进一步提高了对待测物体的精准度，而通过第二通信模块则实现了无线通信和控制，方便进行拆装以及调节。
图6位本申请实施例中毫米波雷达在汽车上的安装图。图中示出的阴影位置均可以放置毫米波雷达1。例如，毫米波雷达1可以放置在示出位置中的任意之一。
本申请提供了一种基于毫米波雷达检测车内活体的方法，采用微多普勒方法来判断是否有活体，并利用DOA估计来检测活体具体位置，最大程度减少误报漏报，快速识别熟睡的婴儿，并有效滤掉机械振动等杂波，有效区分活体与非活体，MIMO广角天线，增加空间探测分辨率，准确识别活体位置，且通过云台摄像头以及红外测温仪便于对活体的形状以及温度，进一步提高了检测的精准度。

Claims (10)

  1. 一种基于毫米波雷达检测车内活体的方法，所述毫米波雷达包括感知模块，控制模块，以及分析模块，所述方法包括：
    所述感知模块对车内的待测物体进行检测，获得检测信号；
    所述分析模块使用微多普勒方法对所述检测信号进行分析，确定所述待测物体为活体或非活体；
    响应于确定所述待测物体为活体，所述控制模块控制报警组件进行报警，并通过第一通信模块向目标终端发送远程报警信息；
    通过视频监控模块对所述待测物体进行摄像，确定所述待测物体的形状及种类，并制作视频远程发送到所述目标终端；
    通过红外测温模块对所述待测物体进行远程测温，以确定所述待测物体的温度信号，并将所述温度信号远程发送到所述目标终端。
  2. 根据权利要求1所述的方法，其中，所述分析模块使用微多普勒方法对所述检测信号进行分析，确定所述待测物体为活体或非活体，包括：
    对所述检测信号进行处理获得采样数据；使用所述微多普勒方法对所述采样数据进行微动检测以及呼吸信息检测，并判断待测物体是否为活体；
    响应于确定所述待测物体为活体，使用波达方向DOA频谱检测活体的位置。
  3. 一种基于权利要求1-2所述的基于毫米波雷达检测车内活体的装置，包括毫米波雷达，报警组件，第一通信模块，以及目标终端，所述毫米波雷达包括：
    感知模块，设置为对车内的待测物体进行检测，获得检测信号；
    分析模块，设置为使用微多普勒方法对所述检测信号进行分析，确定所述待测物体为活体或非活体；
    控制模块，设置为响应于确定所述待测物体为活体，控制所述报警组件进行报警，并通过所述第一通信模块向所述目标终端发送远程报警信息。
  4. 根据权利要求3所述的装置，其中，所述感知模块包括天线模块，所述分析模块包括微控制器模块和存储模块，所述控制模块包括所述微控制器模块和模式选择模块；
    所述天线模块，设置为发射信号并接收所述待检测物体返回的所述检测信号；
    所述存储模块，设置为存储所述车内活体检测装置的数据以及所述微控制器模块的数据；
    所述微控制器模块，设置为对所述检测信号以及所述天线模块的发射信号进行解调，以确定所述待检测物体是否为活体，响应于确定所述待检测物体为活体，控制所述报警组件进行报警，并通过所述第一通信模块向所述目标终端发送远程报警信息；
    所述模式选择模块，设置为控制所述天线模块对阵列排布以及物理通道进行选择。
  5. 根据权利要求4所述的装置，其中，所述天线模块为多输入多输出MIMO广角天线。
  6. 根据权利要求4所述的装置，其中，所述毫米波雷达还包括定时模块，所述定时模块与所述微控制器模块的输出端电性连接，所述微控制器模块通过所述定时模块控制所述报警组件定时发送报警信息。
  7. 根据权利要求6所述的装置，还包括视频监控模块，红外测温模块，电路板，天线罩以及下盖，所述毫米波雷达集成设置在所述电路板上，所述电路板设置在所述下盖与所述天线罩之间，所述天线罩通过三层螺丝锁附在所述下盖上，所述毫米波雷达分别与所述报警组件、所述视频监控模块以及所述红外测温模块电连接；
    所述视频监控模块，设置为对所述待测物体进行摄像，确定所述待测物体的形状及种类，并制作视频远程发送到所述目标终端；
    所述红外测温模块，设置为对所述待测物体进行远程测温，以确定所述待测物体的温度信号，并将所述温度信号远程发送到所述目标终端。
  8. 根据权利要求7所述的装置，其中，所述报警组件包括声光报警器以及闪光报警器，所述声光报警器通过通讯线与所述毫米波雷达电连接，所述闪光报警器位于车体外侧，且所述闪光报警器的接电端通过磁吸式充电线与车内的供电设备电连接。
  9. 根据权利要求7所述的装置，其中，所述视频监控模块为云台摄像头，且所述云台摄像头的顶端具有磁吸底座，所述云台摄像头通过第二通信模块与所述毫米波雷达中的微控制器模块进行无线通信连接。
  10. 根据权利要求7所述的装置，其中，所述视频监控模块为云台摄像头，所述红外测温模块为红外测温仪，且所述红外测温仪通过束紧件固定连接在所述云台摄像头的头部，所述红外测温仪与所述云台摄像头的头部同步运行，且所述红外测温仪的测温方向与所述云台摄像头的监控方向相同，所述红外测温仪通过第二通信模块与所述毫米波雷达的微控制器模块进行无线通信连接，所述红外测温仪以及所述云台摄像头分别通过磁吸式充电线与车内的供电电源电连接，所述第二通信模块为频率为2.4GHz的ZigBee无线通信芯片。
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