CN111956196A - Vital sign detecting system in car - Google Patents
Vital sign detecting system in car Download PDFInfo
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- CN111956196A CN111956196A CN202010846318.7A CN202010846318A CN111956196A CN 111956196 A CN111956196 A CN 111956196A CN 202010846318 A CN202010846318 A CN 202010846318A CN 111956196 A CN111956196 A CN 111956196A
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- 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
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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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
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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
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/14—Receivers specially adapted for specific applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/005—Prospecting or detecting by optical means operating with millimetre waves, e.g. measuring the black losey radiation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2503/00—Evaluating a particular growth phase or type of persons or animals
- A61B2503/20—Workers
- A61B2503/22—Motor vehicles operators, e.g. drivers, pilots, captains
Abstract
The invention relates to the technical field of vital sign detection in a car, and particularly discloses a vital sign detection system in a car, which comprises: the system comprises a vital sign detection device, a vehicle state detection device, a vehicle running data acquisition device, a fusion data model calculation center, a data communication storage device, an early warning prompt control device and a user operation center, wherein the vital sign detection device, the vehicle state detection device, the vehicle running data acquisition device, the data communication storage device and the early warning prompt control device are all in communication connection with the fusion data model calculation center, and the user operation center is in communication connection with the data communication storage device. The in-vehicle vital sign detection system provided by the invention can effectively realize the detection of the in-vehicle vital signs, and has high detection accuracy.
Description
Technical Field
The invention relates to the technical field of vital sign detection in a vehicle, in particular to a vital sign detection system in the vehicle.
Background
Along with the rapid development of the automobile industry, automobiles are gradually popularized in the lives of people, the safety of automobiles is more and more concerned by people, the timely prevention of automobile safety hazards and the timely rescue after accidents occur, and the improvement of the safety prevention performance of automobiles and the reduction of the loss of accident personnel are research hotspots in academic circles and industrial circles at home and abroad. The vital sign detection technology in the vehicle actively detects a human body by utilizing a human body detection sensor device and gives an alarm after detecting a signal. The automobile anti-suffocation early warning system can realize effective early warning for the occurrence of the casualty accident of suffocation of infants, children or pets left in the automobile due to negligence of drivers, and meanwhile, when the automobile has a collision accident, the condition that autonomous alarm cannot be given to persons in the automobile due to too heavy injury occurs, and active alarm is carried out to timely rescue the injured persons.
In the prior art, there are several detection schemes based on ignition switch detection, door lock detection and sensor detection, wherein the two modes of ignition switch detection and door lock detection are to judge whether the door is stopped or not by the vehicle characteristic mode of whether the vehicle is ignited or not or whether the door is locked, and meanwhile, the pressure and temperature sensors on the seat are combined to further judge whether a person stays in the vehicle or not; the sensor-based detection is to detect the detention of people in the vehicle through the activity characteristics of the people detected by sensors such as carbon dioxide, an infrared sensor, a Doppler radar and the like; the method can realize early warning under certain conditions, but cannot have the functions of detection, alarming and self-rescue, the detection of the vital signs of people in the vehicle judges the state of the people in the vehicle through temperature, pressure or motion detection, the real-time monitoring of the vital signs and the state of the people cannot be realized, when an object is shielded or the people without behavior ability cannot be scientifically evaluated, the system fails, the functionality is poor, false alarm or the condition that the human body is not detected is more, the judgment of animals is more difficult, and the method is difficult to adapt to complex working conditions.
Disclosure of Invention
The invention provides a vital sign detection system in a vehicle, which solves the problem that the vital signs of people cannot be really monitored in real time in the related technology.
As an aspect of the present invention, there is provided an in-vehicle vital signs detection system, comprising: the system comprises a vital sign detection device, a vehicle state detection device, a vehicle running data acquisition device, a fused data model calculation center, a data communication storage device, an early warning prompt control device and a user operation center, wherein the vital sign detection device, the vehicle state detection device, the vehicle running data acquisition device, the data communication storage device and the early warning prompt control device are all in communication connection with the fused data model calculation center, and the user operation center is in communication connection with the data communication storage device;
the vital sign detection device is used for acquiring the number statistics of people in the vehicle and the measurement of the physiological characteristic information of the respiration and the heart rate of the people in the vehicle;
the vehicle state detection device is used for detecting the vehicle state parameters of the temperature environment, the vehicle start and stop, the vehicle door opening and closing and the collision vibration in the vehicle;
the vehicle driving data acquisition device is used for realizing communication interaction with an automobile bus and acquiring vehicle driving conditions and driver driving conditions;
the fusion data model calculation center is used for carrying out information fusion on the results detected by the vital sign detection device, the vehicle state detection device and the vehicle running data acquisition device and realizing the safety control on the vital signs of people in the vehicle;
the data communication storage device is used for storing the fused result of the fused data model calculation center in real time and controlling communication;
the early warning prompt control device is used for carrying out early warning control on the result after the fusion of the fusion data model calculation center;
and the user operation center is used for realizing the setting of the user on the communication and detection result data application analysis service.
Further, the vital signs detection apparatus comprises: the system comprises a millimeter wave radar detection unit, a sound sensor unit and a vital sign data processing unit, wherein the millimeter wave radar detection unit and the sound sensor unit are both in communication connection with the vital sign data processing unit;
the millimeter wave radar detection unit is used for emitting millimeter wave signals to the outside, receiving the reflected millimeter wave signals, acquiring millimeter wave signals with breathing and heart rate physiological characteristics of people in the vehicle, and processing the millimeter wave signals to obtain a physiological signal measurement result;
the sound sensor unit is used for collecting and identifying the voice of people in the vehicle and carrying out feature matching on the voice of the people in the vehicle so as to identify a help seeking signal;
and the vital sign data processing unit is used for processing and calculating the detection results of the millimeter wave radar detection unit and the sound sensor unit and outputting the detection results.
Further, the millimeter wave radar detection unit comprises a millimeter wave signal receiving and transmitting unit and a signal control processing and calculating unit, the millimeter wave signal receiving and transmitting unit is in communication connection with the signal control processing and calculating unit, and the signal control processing and calculating unit is in communication connection with the vital sign data processing unit;
the millimeter wave signal receiving and transmitting unit is used for transmitting millimeter wave signals to the outside and receiving the reflected millimeter wave signals;
the signal control processing and calculating unit is used for acquiring millimeter wave signals of physiological characteristics of breath and heart rate of people in the vehicle, and processing the millimeter wave signals to obtain a physiological signal measuring result.
Further, the vehicle state detection device includes: the system comprises an acceleration sensor unit, a temperature sensor unit, a GPS position sensor unit, a vehicle door sensor unit and a vibration sensor unit, wherein the acceleration sensor unit, the temperature sensor unit, the GPS position sensor unit, the vehicle door sensor unit and the vibration sensor unit are all in communication connection with the fusion data model calculation center;
the acceleration sensor unit is used for detecting the motion characteristics of starting and stopping the vehicle;
the temperature sensor unit is used for detecting the temperature environment in the vehicle;
the GPS position sensor unit is used for positioning the vehicle;
the vehicle door sensor unit is used for identifying the opening and closing state of a vehicle door;
the shock sensor unit is used for detecting whether the vehicle is subjected to a collision accident.
Further, the vehicle travel data acquisition device includes: the system comprises an automobile bus communication unit and a vehicle driving data acquisition unit, wherein the automobile bus communication unit is in communication connection with the vehicle driving data acquisition unit, and the vehicle driving data acquisition unit is in communication connection with the fusion data model calculation center;
the automobile bus communication unit is used for realizing the communication interaction between the vehicle driving data acquisition unit and the automobile bus;
the vehicle running data acquisition unit is used for acquiring and reading a vehicle running state, namely a driver driving condition.
Further, the data communication storage device comprises: the wireless signal communication unit is in communication connection with the system data storage unit, the wireless signal communication unit and the system data storage unit are both in communication connection with the fused data model calculation center, and the wireless signal communication unit is also in communication connection with the user operation center;
the wireless signal communication unit is used for automatically sending an early warning signal and realizing communication interaction with a user operation center;
and the system data storage unit is used for storing and reading and writing detection calculation results of the vital sign detection device, the vehicle state detection device, the vehicle driving data acquisition device and the fusion data model calculation center.
Further, the early warning prompt control device comprises: the voice early warning prompting unit, the light early warning prompting unit, the car window lifting control unit and the automatic voice dialing unit are all in communication connection with the fused data model computing center,
the voice early warning prompting unit is used for sending out voice prompt to realize early warning;
the light early warning prompting unit is used for sending a light prompting signal to realize early warning;
the car window lifting control unit is used for controlling the opening degree of the car window when a help seeking signal sent out in the car is detected;
the automatic voice dialing unit is used for sending automatic voice signals to the alarm center and the emergency contact person when sending help seeking signals in the vehicle.
Further, the user operation center includes: the system comprises a human-computer interaction application unit and a remote data service unit, wherein the human-computer interaction application unit is in communication connection with the remote data service unit, and the human-computer interaction application unit is in communication connection with the data communication storage unit;
the man-machine interaction application unit is used for realizing the setting of a data communication storage device by a user;
and the remote data service unit is used for realizing the application analysis service setting of the detection result data by the user.
According to the in-vehicle vital sign detection system, the vibration signals generated by breathing and heartbeat of a driver are detected through the millimeter wave radar signals, the number of drivers and passengers in the vehicle and the breathing and heart rate physiological signals corresponding to the passengers are calculated and extracted, the characteristics of the passengers are matched in combination with voice recognition, and the vital sign signals of the passengers in the vehicle are detected; and then carrying out information fusion on the vital sign detection result, the vehicle state detection result and the vehicle driving data acquisition result, establishing a multi-sensor and communication fusion technology in-vehicle personnel vital sign data safety model based on the millimeter wave radar technology, and carrying out real-time matching calculation analysis on the real-time detection result and the data safety model to realize the safety detection, alarm and self-rescue functions on vital signs during the driving process, getting on and off and in danger of in-vehicle personnel.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a block diagram of a vital sign detection system in a vehicle according to the present invention.
Fig. 2 is a flowchart of a specific method for detecting vital signs by the in-car vital sign detection system provided by the present invention.
Fig. 3 is a schematic diagram of an installation position of the in-vehicle vital sign detection system provided by the invention on a vehicle.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this embodiment, an in-car vital sign detection system is provided, and fig. 1 is a block diagram of a structure of an in-car vital sign detection system provided according to an embodiment of the present invention, as shown in fig. 1, including: the system comprises a vital sign detection device 1, a vehicle state detection device 2, a vehicle running data acquisition device 3, a fused data model calculation center 4, a data communication storage device 5, an early warning prompt control device 6 and a user operation center 7, wherein the vital sign detection device 1, the vehicle state detection device 2, the vehicle running data acquisition device 3, the data communication storage device 5 and the early warning prompt control device 6 are all in communication connection with the fused data model calculation center 4, and the user operation center 7 is in communication connection with the data communication storage device 5;
the vital sign detection device 1 is used for acquiring the number statistics of people in the vehicle and the measurement of the physiological characteristic information of the respiration and the heart rate of the people in the vehicle;
the vehicle state detection device 2 is used for detecting the in-vehicle temperature environment, the vehicle start and stop, the vehicle door opening and closing and the collision vibration vehicle state parameters;
the vehicle driving data acquisition device 3 is used for realizing communication interaction with an automobile bus and acquiring vehicle driving conditions and driver driving conditions;
the fusion data model calculation center 4 is used for performing information fusion on the results detected by the vital sign detection device, the vehicle state detection device and the vehicle driving data acquisition device, and realizing safety control on vital signs of people in the vehicle;
the data communication storage device 5 is used for storing the fused result of the fused data model calculation center in real time and controlling communication;
the early warning prompt control device 6 is used for carrying out early warning control on the result after the fusion of the fusion data model calculation center;
the user operation center 7 is used for realizing the setting of the user to the communication and the detection result data application analysis service.
According to the vital sign detection system in the vehicle, provided by the embodiment of the invention, the vibration signals generated by breathing and heartbeat of a driver are detected through the millimeter wave radar signals, the number of drivers and passengers in the vehicle and the physiological signals of the breathing and the heart rate corresponding to the passengers are calculated and extracted, the characteristics of the passengers are matched in combination with voice recognition, and the vital sign signals of the passengers in the vehicle are detected; and then carrying out information fusion on the vital sign detection result, the vehicle state detection result and the vehicle driving data acquisition result, establishing a multi-sensor and communication fusion technology in-vehicle personnel vital sign data safety model based on the millimeter wave radar technology, and carrying out real-time matching calculation analysis on the real-time detection result and the data safety model to realize the safety detection, alarm and self-rescue functions on vital signs during the driving process, getting on and off and in danger of in-vehicle personnel.
Specifically, the in-vehicle vital sign detection system mainly comprises a vital sign detection device 1, a vehicle state detection device 2, a vehicle driving data acquisition device 3, a fusion data model calculation center 4, a data communication storage device 5, an early warning prompt control device 6 and a user operation center 7. The vital sign detection device 1 mainly adopts millimeter wave radar-based detection, assists a sound sensor to enhance and identify the characteristics of people, and is mainly used for counting the number of people in a vehicle and measuring the physiological characteristic information of the respiration and heart rate of the people; the vehicle state detection device 2 is mainly used for detecting the vehicle state parameters of the temperature environment in the vehicle, the vehicle start and stop, the vehicle door opening and closing and the collision vibration; the vehicle driving data acquisition device 3 is mainly used for communicating with an automobile bus, reading the vehicle driving condition and the driving condition of a driver, obtaining vehicle driving related parameters such as vehicle speed, steering wheel angle, acceleration state and the like, and reflecting the safe driving condition of the vehicle indirectly and in real time through the driving habit data characteristics; the fusion data model calculation center 4 is mainly used for providing a system detection technology hardware platform, performing information fusion on detection results of the vital sign detection device 1, the vehicle state detection device 2 and the vehicle running data acquisition device 3, establishing a personnel vital sign data safety model, and performing real-time matching calculation analysis on a real-time detection result and the data safety model to realize safety detection, alarm and self-rescue function control on vital signs in the vehicle during the driving process, getting on and off the vehicle and in danger of personnel in the vehicle; the data communication storage device 5 is mainly used for fusing real-time storage of calculation results of the data model calculation center 4 and mobile communication and WIFI connection control; the early warning prompt control device 6 is mainly used for responding to operation control in alarm and self-rescue operation by fusing the calculation result of the data model calculation center 4 and providing various emergency early warning response modes; the user operation center 7 is mainly used for the user to apply the analysis service setting to the mobile network service activation, the emergency contact information and the detection result data.
In particular, the vital signs detection device 1 comprises: the system comprises a millimeter wave radar detection unit 11, a sound sensor unit 12 and a vital sign data processing unit 13, wherein the millimeter wave radar detection unit 11 and the sound sensor unit 12 are both in communication connection with the vital sign data processing unit 13;
the millimeter wave radar detection unit 11 is used for emitting millimeter wave signals outwards and receiving the reflected millimeter wave signals, acquiring millimeter wave signals with respiration and heart rate physiological characteristics of people in the vehicle, and processing the millimeter wave signals to obtain physiological signal measurement results;
the sound sensor unit 12 is used for collecting and identifying the voice of people in the vehicle, and performing feature matching on the voice of the people in the vehicle to identify a help signal;
the vital sign data processing unit 13 is configured to process and calculate detection results of the millimeter wave radar detection unit and the sound sensor unit, and output the detection results.
Further specifically, the millimeter wave radar detection unit 11 includes a millimeter wave signal transceiver unit and a signal control processing calculation unit, the millimeter wave signal transceiver unit is in communication connection with the signal control processing calculation unit, and the signal control processing calculation unit is in communication connection with the vital sign data processing unit;
the millimeter wave signal receiving and transmitting unit is used for transmitting millimeter wave signals to the outside and receiving the reflected millimeter wave signals;
the signal control processing and calculating unit is used for acquiring millimeter wave signals of physiological characteristics of breath and heart rate of people in the vehicle, and processing the millimeter wave signals to obtain a physiological signal measuring result.
As shown in fig. 1, the vital signs detection device 1 mainly comprises: a millimeter wave radar detection unit 11, a sound sensor unit 12, and a vital sign data processing unit 13. The millimeter wave radar detection unit 11 mainly comprises a millimeter wave radio frequency transceiving front end and a signal control processing circuit, wherein the millimeter wave radio frequency transceiving front end circuit is mainly used for transmitting and receiving millimeter wave signals to the outside, acquiring a respiration and heartbeat signal reflection channel of a person in the vehicle in a non-contact manner, processing the millimeter wave receiving signals with respiration and heartbeat physiological signal characteristics of the person in the vehicle through the signal control processing circuit, counting and counting the person with vital signal characteristics finally, and corresponding to the respiration and heartbeat physiological signal measurement results of the person; the sound sensor unit 12 is mainly used for voice acquisition and recognition of people in the vehicle, the millimeter wave radar detection module 11 is assisted to perform enhanced recognition on characteristics of detected people, and the characteristics of the people in the vehicle are matched and recognized through acquiring the voice in the vehicle and applying a voice recognition technology to cry and cry for help of a life and ask for a related special voice help signal; the vital sign data processing unit 13 is mainly used for processing and calculating the detection results of the millimeter wave radar detection unit 11 and the sound sensor 12 and outputting the detection results.
Specifically, the vehicle state detection device 2 includes: the system comprises an acceleration sensor unit 21, a temperature sensor unit 22, a GPS position sensor unit 23, a vehicle door sensor unit 24 and a vibration sensor unit 25, wherein the acceleration sensor unit 21, the temperature sensor unit 22, the GPS position sensor unit 23, the vehicle door sensor unit 24 and the vibration sensor unit 25 are all in communication connection with the fused data model calculation center 4;
the acceleration sensor unit 21 is used for detecting the motion characteristics of starting and stopping the vehicle;
the temperature sensor unit 22 is used for detecting the temperature environment in the vehicle;
the GPS position sensor unit 23 is used for positioning the vehicle;
the door sensor unit 24 is used for identifying the opening and closing state of the door;
the shock sensor unit 25 serves to detect whether the vehicle is subjected to a collision accident.
As shown in fig. 1, the vehicle state detection 2 mainly includes: an acceleration sensor unit 21, a temperature sensor unit 22, a GPS position sensor unit 23, a door sensor unit 24, and a vibration sensor unit 25. The acceleration sensor unit 21 is mainly used for judging the starting and stopping motion state of the automobile, and the current starting and stopping motion characteristic detection of the automobile is realized by calculating the variation process of the acceleration value in the space in the directions of X, Y and the Z axis; the temperature sensor unit 22 is mainly used for detecting the temperature environment in the vehicle, and can be used for detecting the vital signs of people in an auxiliary manner by combining the temperature environment in the vehicle; the GPS position sensor unit 23 is mainly used for vehicle positioning, and can be used for assisting in vehicle start-stop motion state judgment and early warning, and providing vehicle position information during self rescue; the vehicle door sensor unit 24 is mainly used for recognizing the opening and closing states of the vehicle door, and can be used for counting personnel by the vital sign detection 1 during the process of getting on and off the vehicle to judge the retention condition of the personnel in the vehicle; the shock sensor unit 2 is mainly used to detect whether the automobile is subjected to a collision accident.
Specifically, the vehicle travel data collection device 3 includes: the system comprises an automobile bus communication unit 31 and a vehicle running data acquisition unit 32, wherein the automobile bus communication unit 31 is in communication connection with the vehicle running data acquisition unit 32, and the vehicle running data acquisition unit 32 is in communication connection with the fusion data model calculation center 4;
the automobile bus communication unit 31 is used for realizing communication interaction between the vehicle driving data acquisition unit and an automobile bus;
the vehicle driving data acquisition unit 32 is used for acquiring and reading a vehicle driving state, i.e., a driver driving condition.
As shown in fig. 1, the vehicle travel data collection 3 mainly includes: a vehicle bus communication control unit 31 and a driving habit data acquisition unit 32. The automobile bus communication control unit 31 is mainly used for communication interaction between the driving habit data acquisition unit 32 and an automobile bus; the driving habit data collecting unit 32 collects and reads the driving condition of the vehicle and the driving condition of the driver, and obtains parameters related to vehicle driving, such as vehicle speed, steering wheel angle, acceleration state and the like, for judging the real-time driving state of the current vehicle.
Specifically, the data communication storage device 5 includes: a wireless signal communication unit 52 and a system data storage unit 51, wherein the wireless signal communication unit 52 is in communication connection with the system data storage unit 51, both the wireless signal communication unit 52 and the system data storage unit 51 are in communication connection with the fused data model calculation center 4, and the wireless signal communication unit 52 is also in communication connection with the user operation center 7;
the wireless signal communication unit 52 is used for automatically sending the early warning signal and realizing communication interaction with the user operation center;
the system data storage unit 51 is used for storing and reading and writing detection calculation results of the vital sign detection device, the vehicle state detection device, the vehicle driving data acquisition device and the fusion data model calculation center.
As shown in fig. 1, the data communication storage 5 mainly includes: a system data storage unit 51 and a wireless signal communication unit 52. The system data storage unit 51 is used for storing and reading and writing detection and calculation results of the vital sign detection 1, the vehicle state detection 2, the vehicle driving data acquisition 3 and the fusion data model calculation center 4; the wireless signal communication unit 52 mainly includes a GSM communication module and a WIFI communication module, the GSM communication module is used for system early warning and self-rescue, automatic voice dialing signal transmission is realized through a mobile network, and the WIFI communication module is used for interactive communication between the system and a user operation center.
Specifically, the warning prompt control device 6 includes: a voice early warning prompting unit 61, a light early warning prompting unit 62, a vehicle window lifting control unit 63 and an automatic voice dialing unit 64, wherein the voice early warning prompting unit 61, the light early warning prompting unit 62, the vehicle window lifting control unit 63 and the automatic voice dialing unit 64 are all in communication connection with the fused data model calculation center 7,
the voice early warning prompting unit 61 is used for sending out voice prompt to realize early warning;
the light early warning prompting unit 62 is used for sending a light prompting signal to realize early warning;
the window lifting control unit 63 is used for controlling the opening degree of a window when a help signal sent out in the vehicle is detected;
the automatic voice dialing unit 64 is used for sending automatic voice signals to the alarm center and the emergency contact when the help seeking signal is sent out in the vehicle.
As shown in fig. 1, the early warning prompt control 6 mainly includes: a voice early warning prompting unit 61, a light early warning prompting unit 62, a vehicle window lifting control unit 63 and an automatic voice dialing unit 64. The voice early warning prompting unit 61 is used for voice prompting during system detection and early warning; the light early warning prompting unit 62 is used for sending out a prompting signal through vehicle light during system detection and early warning, and sending out different early warning signals through light flashing; the window lifting control unit 63 is mainly used for controlling the opening degree of a window when the system detects that the temperature in the vehicle is too high, and people suffocate and save oneself, and increasing the response safety coefficient of the system; the automatic voice dialing unit 64 is mainly used for sending automatic voice signals to the alarm center and the emergency contact when the system is used for early warning and self-rescue.
Specifically, the user operation center 7 includes: the system comprises a human-computer interaction application unit 71 and a remote data service unit 72, wherein the human-computer interaction application unit 71 is in communication connection with the remote data service unit 72, and the human-computer interaction application unit 71 is in communication connection with the data communication storage unit 72;
the human-computer interaction application unit 71 is used for realizing the setting of a data communication storage device by a user;
the remote data service unit 72 is used for implementing the application analysis service setting of the detection result data by the user.
As shown in fig. 1, the user operation center 7 includes: a human-computer interaction application 71 and a remote data service 72. The man-machine interaction application 71 is mainly used for setting SIM card activation, emergency contact list information and change service for the wireless signal communication unit 51 and the automatic voice dialing unit 64 by the user; the remote data service 72 is used for user application analysis service settings for system test result data.
The specific working principle of the in-vehicle vital sign detection system provided by the embodiment of the invention is as follows: usually, the human body breathes and causes the displacement of chest abdomen surface to be 4 ~ 12mm, the heartbeat causes the displacement of chest wall to be 1 ~ 2mm, respiratory frequency 0.1 ~ 0.5Hz, the heartbeat is 0.8 ~ 2Hz, match with millimeter wave radar working wavelength and detection precision, and the millimeter wave radar can directly pierce through non-metallic medium, detects human vital signs non-contactingly, and supplementary sound sensor strengthens the discernment to personnel's characteristic, realizes personnel's breathing in the car and rhythm of the heart physiological characteristic information measurement. Meanwhile, the vehicle state parameters such as the temperature environment in the vehicle, the vehicle start and stop, the vehicle door opening and closing and the collision vibration are detected by combining other sensors, and the control condition of the driver on the vehicle can be known through the vehicle running related parameters such as the vehicle speed, the steering wheel angle, the acceleration state and the like. The vital sign detection result, the vehicle state detection result and the vehicle driving data acquisition result are subjected to information fusion, a multi-sensor and communication fusion technology in-vehicle personnel vital sign data safety model based on the millimeter wave radar technology is established, and the safety detection, alarming and self-rescue functions of vital signs during the driving process, getting on and off and distress of in-vehicle personnel are realized by performing real-time matching calculation analysis on the real-time detection result and the data safety model.
The following describes in detail a specific detection method for detecting vital signs in a vehicle by using the above system for detecting vital signs in a vehicle with reference to fig. 2.
Step S1: as shown in fig. 3, the vital sign detection system in the automobile is installed and fixed at a proper position on the roof, and is recommended to be installed at the position of the roof above a rearview mirror, so that the surface of the detection system device is ensured to be aligned with the seat area of a driver and a passenger. And starting a power supply, automatically starting the power-on self-test of the system, and checking the fault of each module of the detection device.
Step S2: the system enters a detection working mode, the millimeter wave radio frequency front-end circuit starts to receive and send millimeter wave signals to realize active detection of respiration and heart rate signals of a person, and the received signals are sent to the signal control processing computing circuit;
step S3: the detection data feature recognition unit detects and obtains the target number of people at different distances in the front and back of the vehicle and different seat angles and the corresponding respiration and heart rate physiological signal measurement results of the people according to the displacement features of the chest and abdomen surface of a human body caused by respiration (the displacement of the chest and abdomen surface caused by respiration is 4-12 mm, the respiratory frequency feature range is 0.1-0.5 Hz, the displacement of the chest wall caused by heartbeat is 1-2 mm, and the heartbeat frequency feature range is 0.8-2 Hz) and the signal control processing and calculation circuit performs digital filtering, noise reduction, Fourier transform signal processing and feature extraction algorithm calculation on the received signals and sends the detection results to the vital sign data processing unit;
step S4: the sound sensor collects the voice signals in the vehicle for recognition, the characteristics of the position, the sex, the age and the like of the sound production of the person in the vehicle are extracted, meanwhile, the characteristic recognition is carried out on the distress and crying sound of the person in the vehicle, a neural network training model can be established through training data to obtain a discrimination method, and the detection result is sent to the vital sign data processing unit;
step S5: and carrying out correlation value enhancement identification on the detection results of the millimeter wave radar detection unit and the sound sensor unit to obtain the detection result of the vital sign signals of the person with the gender and age enhancement characteristics.
Step S6: x, Y and acceleration values in the Z-axis direction in an acceleration sensor unit or a side vehicle space are transmitted to a fusion data model calculation center;
step S7: reading the current environment temperature in the vehicle through a temperature sensor and sending the current environment temperature to a fusion data model calculation center;
step S8: reading the longitude and latitude position information of the current vehicle through a GPS position sensor and sending the longitude and latitude position information to a fusion data model calculation center;
step S9: reading the current opening and closing state of the vehicle door through a vehicle door sensor and sending the current opening and closing state of the vehicle door to a fusion data model calculation center;
step S10: reading the current vehicle vibration state through a vibration sensor and sending the current vehicle vibration state to a fusion data model calculation center;
step S11: the automobile bus communication control unit realizes information interaction with an automobile bus through a bus communication control protocol and sends the vehicle running state information to the vehicle running data acquisition unit;
step S12: the vehicle running data acquisition unit acquires and reads vehicle running conditions and driver driving state information, obtains vehicle running related parameters such as vehicle speed, steering wheel angle, acceleration state and the like, and sends the acquired information to the fusion data model calculation center;
step S13: setting different detection thresholds based on the vital signs, the vehicle state and the vehicle running data characteristics, establishing a fusion data safety model, performing matching calculation on a real-time detection result and the model, and performing safety risk assessment calculation on the current environment in the vehicle, the vehicle running condition and the vital signs of people in the vehicle;
step S14: storing technical results of vital sign detection, vehicle state detection, vehicle driving data acquisition and fusion data model calculation center detection, detecting the system memory state, and periodically refreshing and covering the stored results;
step S15: detecting the connection state of the mobile network and the WIFI wireless communication signal in real time;
step S16: reading the current SIM card service activation state, the emergency contact information input and the change information;
step S17: detecting data application analysis service setting options and determining the output state of a detection result;
step S18: judging the detained personnel in the vehicle, determining that the vehicle enters a stop state at present according to the vehicle state detection result and the vehicle running number detection result of the acceleration sensor, the GPS position sensor and the vehicle door sensor, comparing the number of the personnel getting on and off the vehicle to judge the detained personnel, and if so, entering the step S20; if not, go to step S19;
step S19: and outputting a normal voice driving safety prompt according to the normal detection result.
Step S20: reminding the driver of detaining in the car through pronunciation, car light scintillation, simultaneously according to the temperature in the car and the breath of detained personnel in the car, the condition of stifling of rhythm of the heart condition analyst, adjust the door window control according to the testing result, prevent personnel from stifling.
Step S21: and reading the information of the emergency contact person and sending a voice call prompt.
Step S22: when the vehicle is judged to be collided by combining the vehicle state detection results of the current vehicle acceleration sensor and the current vibration sensor and the vehicle running number detection results, the dangerous accident self-rescue judgment is carried out, and if yes, the step S24 is carried out; if not, go to step S23;
step S23: and comparing and analyzing the change trend of the vital sign parameters of the people in the vehicle, analyzing abnormal values of the vehicle state and the vehicle running data acquisition and detection result, and outputting a normal voice driving safety prompt after the vital sign parameters of the people in the vehicle and the vehicle are determined to be normal.
Step S24: the early warning signal is sent through voice and automobile light flicker, meanwhile, the suffocation condition of the analysts is analyzed according to the temperature in the automobile and the breathing and heart rate conditions of the people in the automobile, the automobile window control is adjusted according to the detection result, and the suffocation of the people is prevented.
Step S25: and starting voice automatic alarm for help, reporting information such as vital signs, positioning and vehicle running states of people in the vehicle, and notifying emergency contacts with voice.
In summary, the in-vehicle vital sign detection system provided by the embodiment of the invention has the functions of detection, alarm and self rescue, and can eliminate environmental interference and improve the identification accuracy and safety.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (8)
1. An in-vehicle vital sign detection system, comprising: the system comprises a vital sign detection device, a vehicle state detection device, a vehicle running data acquisition device, a fused data model calculation center, a data communication storage device, an early warning prompt control device and a user operation center, wherein the vital sign detection device, the vehicle state detection device, the vehicle running data acquisition device, the data communication storage device and the early warning prompt control device are all in communication connection with the fused data model calculation center, and the user operation center is in communication connection with the data communication storage device;
the vital sign detection device is used for acquiring the number statistics of people in the vehicle and the measurement of the physiological characteristic information of the respiration and the heart rate of the people in the vehicle;
the vehicle state detection device is used for detecting the vehicle state parameters of the temperature environment, the vehicle start and stop, the vehicle door opening and closing and the collision vibration in the vehicle;
the vehicle driving data acquisition device is used for realizing communication interaction with an automobile bus and acquiring vehicle driving conditions and driver driving conditions;
the fusion data model calculation center is used for carrying out information fusion on the results detected by the vital sign detection device, the vehicle state detection device and the vehicle running data acquisition device and realizing the safety control on the vital signs of people in the vehicle;
the data communication storage device is used for storing the fused result of the fused data model calculation center in real time and controlling communication;
the early warning prompt control device is used for carrying out early warning control on the result after the fusion of the fusion data model calculation center;
and the user operation center is used for realizing the setting of the user on the communication and detection result data application analysis service.
2. The in-car vital signs detection system of claim 1, wherein the vital signs detection device comprises: the system comprises a millimeter wave radar detection unit, a sound sensor unit and a vital sign data processing unit, wherein the millimeter wave radar detection unit and the sound sensor unit are both in communication connection with the vital sign data processing unit;
the millimeter wave radar detection unit is used for emitting millimeter wave signals to the outside, receiving the reflected millimeter wave signals, acquiring millimeter wave signals with breathing and heart rate physiological characteristics of people in the vehicle, and processing the millimeter wave signals to obtain a physiological signal measurement result;
the sound sensor unit is used for collecting and identifying the voice of people in the vehicle and carrying out feature matching on the voice of the people in the vehicle so as to identify a help seeking signal;
and the vital sign data processing unit is used for processing and calculating the detection results of the millimeter wave radar detection unit and the sound sensor unit and outputting the detection results.
3. The in-car vital sign detection system of claim 2, wherein the millimeter wave radar detection unit comprises a millimeter wave signal transceiver unit and a signal control processing and computing unit, the millimeter wave signal transceiver unit is in communication connection with the signal control processing and computing unit, and the signal control processing and computing unit is in communication connection with the vital sign data processing unit;
the millimeter wave signal receiving and transmitting unit is used for transmitting millimeter wave signals to the outside and receiving the reflected millimeter wave signals;
the signal control processing and calculating unit is used for acquiring millimeter wave signals of physiological characteristics of breath and heart rate of people in the vehicle, and processing the millimeter wave signals to obtain a physiological signal measuring result.
4. The in-vehicle vital signs detection system of claim 1, wherein the vehicle state detection device comprises: the system comprises an acceleration sensor unit, a temperature sensor unit, a GPS position sensor unit, a vehicle door sensor unit and a vibration sensor unit, wherein the acceleration sensor unit, the temperature sensor unit, the GPS position sensor unit, the vehicle door sensor unit and the vibration sensor unit are all in communication connection with the fusion data model calculation center;
the acceleration sensor unit is used for detecting the motion characteristics of starting and stopping the vehicle;
the temperature sensor unit is used for detecting the temperature environment in the vehicle;
the GPS position sensor unit is used for positioning the vehicle;
the vehicle door sensor unit is used for identifying the opening and closing state of a vehicle door;
the shock sensor unit is used for detecting whether the vehicle is subjected to a collision accident.
5. The in-vehicle vital sign detection system of claim 1, wherein the vehicle travel data collection device comprises: the system comprises an automobile bus communication unit and a vehicle driving data acquisition unit, wherein the automobile bus communication unit is in communication connection with the vehicle driving data acquisition unit, and the vehicle driving data acquisition unit is in communication connection with the fusion data model calculation center;
the automobile bus communication unit is used for realizing the communication interaction between the vehicle driving data acquisition unit and the automobile bus;
the vehicle running data acquisition unit is used for acquiring and reading a vehicle running state, namely a driver driving condition.
6. The in-vehicle vital signs detection system of claim 1, wherein the data communication storage device comprises: the wireless signal communication unit is in communication connection with the system data storage unit, the wireless signal communication unit and the system data storage unit are both in communication connection with the fused data model calculation center, and the wireless signal communication unit is also in communication connection with the user operation center;
the wireless signal communication unit is used for automatically sending an early warning signal and realizing communication interaction with a user operation center;
and the system data storage unit is used for storing and reading and writing detection calculation results of the vital sign detection device, the vehicle state detection device, the vehicle driving data acquisition device and the fusion data model calculation center.
7. The in-vehicle vital sign detection system of claim 1, wherein the early warning alert control comprises: the voice early warning prompting unit, the light early warning prompting unit, the car window lifting control unit and the automatic voice dialing unit are all in communication connection with the fused data model computing center,
the voice early warning prompting unit is used for sending out voice prompt to realize early warning;
the light early warning prompting unit is used for sending a light prompting signal to realize early warning;
the car window lifting control unit is used for controlling the opening degree of the car window when a help seeking signal sent out in the car is detected;
the automatic voice dialing unit is used for sending automatic voice signals to the alarm center and the emergency contact person when sending help seeking signals in the vehicle.
8. The in-car vital signs detection system of claim 1, wherein the user operations center comprises: the system comprises a human-computer interaction application unit and a remote data service unit, wherein the human-computer interaction application unit is in communication connection with the remote data service unit, and the human-computer interaction application unit is in communication connection with the data communication storage unit;
the man-machine interaction application unit is used for realizing the setting of a data communication storage device by a user;
and the remote data service unit is used for realizing the application analysis service setting of the detection result data by the user.
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