CN216135897U - Steering wheel capable of collecting electrocardiogram data and vital sign monitoring system - Google Patents
Steering wheel capable of collecting electrocardiogram data and vital sign monitoring system Download PDFInfo
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Abstract
The utility model provides a steering wheel capable of acquiring electrocardio data, and a vital sign monitoring system and a vital sign monitoring method based on the steering wheel, which are used for accurately monitoring vital signs and health states of a driver in real time. The steering wheel capable of acquiring the electrocardiogram data comprises a steering wheel framework and two unconnected conductive leathers; the conductive leather is positioned on the surface of the steering wheel framework; the steering wheel framework and the conductive leather are not conductive. The vital sign monitoring system comprises the steering wheel capable of acquiring the electrocardio data, an identity recognition device and an information processing device; wherein, the conductive leather is electrically connected with the information processing device; the identity recognition device is in communication connection with the information processing device.
Description
Technical Field
The utility model belongs to the technical field of vital sign monitoring, and particularly relates to a steering wheel capable of acquiring electrocardio data, a vital sign monitoring system and a vital sign monitoring method.
Background
With the development of science and technology and the progress of society, the living standard of people is continuously improved, the quantity of private cars is increased day by day, the pressure of urban traffic is increased more and more, and safe driving becomes a serious problem gradually. The vehicle is the main urban traffic tool except subway, also is in the rest state for a long time along with driver's time in the car for ever longer and longer, is favorable to stably gathering physiological information.
The prior art has reports that an electrocardio acquisition device and a vehicle steering wheel are integrated for electrocardio acquisition, but the following problems exist: 1. the metal electrode plate for electrocardio acquisition is positioned at a fixed position of a steering wheel, and the electrode plate has small area and cannot completely acquire physiological information in a driving stage in the actual use process; 2. the electrocardio analysis technology is based on electrocardio data acquired in a short time, and the obtained heart rate value has low accuracy and can not accurately diagnose hidden electrocardio diseases; 3. the undifferentiated acquisition of the electrocardiogram data causes that the electrocardiogram data acquired based on the steering wheel electrode sheet cannot be matched with individuals, thereby reducing the accuracy of personal safety early warning.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defects of the prior art, an object of the present invention is to provide a steering wheel capable of collecting electrocardiographic data, a vital sign monitoring system and a method thereof, which are used for accurately monitoring vital signs and health status of a driver in real time.
In order to achieve the purpose, the technical scheme provided by the utility model is as follows:
in a first aspect, the utility model provides a steering wheel capable of acquiring electrocardiogram data, which comprises a steering wheel framework and two unconnected conductive leathers; the conductive leather is positioned on the surface of the steering wheel framework; and the steering wheel framework and the conductive leather are not conductive.
Furthermore, the two unconnected conductive leathers are symmetrically distributed on the steering wheel framework.
Furthermore, the ratio of the total area of the conductive leather to the surface area of the steering wheel skeleton is 0.2-0.9:1, namely the conductive leather covers 20-90% of the surface area of the steering wheel skeleton.
Further, an insulating layer is arranged between the steering wheel framework and the conductive leather. Preferably, the material of the insulating layer is an insulating polymer material, for example, one or more selected from polydimethylsiloxane, phenolic resin, and polyurethane.
In a second aspect, the utility model provides a vital sign monitoring system, which comprises the steering wheel capable of acquiring electrocardiographic data, an identity recognition device and an information processing device; wherein,
the conductive leather of the steering wheel is electrically connected with the information processing device;
the identity recognition device is in communication connection with the information processing device.
Furthermore, the identity recognition device is in communication connection with the information processing device in a wireless or wired mode.
Further, the identity recognition device is an image acquisition device or a connection device with identity information. Preferably, the connection device with the identity information may be a smartphone or a tablet computer bound with the identity information of the driver. Preferably, the image acquisition camera is approximately on the same horizontal line with the interior rearview mirror, so that the complete facial information of the driver can be acquired.
Furthermore, the information processing device comprises an electrocardiogram data processing module, and the electrocardiogram data processing module is used for amplifying and filtering the electrocardiogram data and converting the electrocardiogram data. Preferably, the electrocardiographic data processing module comprises a BMD101 chip or a CN121 chip.
Further, the information processing device further comprises a communication module, wherein the communication module is selected from one or more of a Bluetooth module, a WiFi module and a cellular network module (such as a 3G, 4G or 5G module).
In a third aspect, the utility model provides a vital signs monitoring method for monitoring vital signs of a driver, comprising the steps of:
step S1: confirming the identity information of the driver by using an identity recognition device of the vital sign monitoring system;
step S2, acquiring the electrocardio data of the driver by using the steering wheel which can acquire the electrocardio data of the vital sign monitoring system;
step S3 is to process the acquired electrocardiographic data using the information processing device of the vital sign monitoring system to monitor the vital sign of the driver.
Further, step S2 includes controlling the collection time period, which is the effective time of the cumulative electrocardiographic collection. Preferably, the collection time period is 0-36 hours.
Further, the processing of the acquired electrocardiographic data in step S3 includes signal amplification, filtering, and signal conversion of the electrocardiographic data. Preferably, the filtering uses a filtering method of wavelet transform: firstly, removing baseline drift, processing noises such as power frequency interference and the like, then carrying out discrete wavelet transformation, wherein a wavelet base selects a tightly-supported orthogonal wavelet, namely a Daubechies (dbN) wavelet, and realizing wavelet threshold denoising by adopting a Mallat algorithm.
Further, step S3 further includes the following steps:
step S31: the information processing device uploads the electrocardiogram data to a cloud server and/or a user terminal;
step S32: and the cloud server and/or the user terminal determines the health state of the driver according to the electrocardio data.
In a fourth aspect, the utility model provides an actuator for performing the above vital sign data monitoring method.
Further, the actuator can be a device built by an MCU, a capacitor and a resistor. The MCU may be MSP430 of Texas instruments or other common MCU.
Further, the actuator 7 may be a chip manufactured by a microfabrication means.
In a fifth aspect, the vital sign monitoring system provided by the present invention further includes the above-mentioned actuator and a vehicle-mounted central control assembly, wherein the vehicle-mounted central control assembly is electrically connected to the information processing device and the actuator, respectively, and the actuator is electrically connected to the information processing device.
Further, the on-board central control assembly comprises an energy supply device, such as a battery. The energy supply device is respectively electrically connected with the steering wheel capable of acquiring the electrocardio data, the identity recognition device, the information processing device and the actuator and supplies power to the energy supply device.
In a sixth aspect, the utility model provides the use of the vital signs monitoring system as described above for monitoring the health status of a driver. The vital sign monitoring system can be applied to the field of automobiles, the electrocardio acquisition is completed through a steering wheel in the vital sign monitoring system, the identity recognition device completes identity confirmation, the information processing device completes electrocardio data processing, the executor completes the vital sign data monitoring step, and the energy supply device in the vehicle-mounted central control assembly provides energy for the vital sign monitoring system. Based on the acquired electrocardio data, the health condition of the driver is obtained and monitored in real time, so that accidents are effectively avoided in time.
Has the advantages that:
the utility model adopts the conductive leather as the electrode slice for electrocardio acquisition, can be wrapped on the surface of the steering wheel in a large area, and increases the area and the effective acquisition time of the electrocardio acquisition. The acquired electrocardiogram data are matched with a specific driver and are acquired in an accumulative way, so that the accuracy of diagnosing the health condition of the driver is improved. The identity information is bound by adopting two ways of a camera and/or an intelligent device (a smart phone or a tablet personal computer), so that the accuracy and the effectiveness of identity identification are improved, and the identity information of a user can be effectively identified in a low-light condition of driving at night and an area with weak signals.
Drawings
FIG. 1 is a schematic structural diagram of a steering wheel capable of collecting electrocardiographic data according to a preferred embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an insulating layer of a steering wheel capable of collecting electrocardiographic data according to a preferred embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vital signs monitoring system in accordance with a preferred embodiment of the present invention;
fig. 4 is a flow chart of a vital signs monitoring method in accordance with a preferred embodiment of the present invention;
fig. 5 is a flow chart of a vital signs monitoring method according to another preferred embodiment of the utility model;
FIG. 6 is a schematic structural diagram of a vital signs monitoring system in accordance with another preferred embodiment of the present invention;
fig. 7 is a schematic structural diagram of a vital signs monitoring system according to yet another preferred embodiment of the utility model.
Detailed Description
The following examples are given to illustrate the present invention in detail, and the following examples are given to illustrate the detailed embodiments and specific procedures of the present invention, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1, according to a first aspect of the present invention, in a preferred embodiment, the present invention provides a steering wheel 1 capable of collecting electrocardiographic data, comprising a steering wheel skeleton 3 and two unconnected conductive leathers 2; the conductive leather 2 is positioned on the surface of the steering wheel framework 3; the steering wheel framework 3 and the conductive leather 2 are not conductive.
Preferably, the conductive leather 2 is used as the electrocardio collecting component, the texture of the electrocardio collecting component is the same as that of the traditional leather, and the hands of a driver do not generate foreign body sensation during driving, so that the driving experience is not influenced. The conductive Leather 2 is a Leather manufactured by a special process, and has been disclosed in the prior art, for example, in the document "Skin formation and Antibacterial PPy-Leather Electrode for ECG Monitoring" (Advanced Electronic Materials, 2020, 6 (8): 2000259).
Preferably, two unconnected conductive leathers 2 are symmetrically distributed on the steering wheel skeleton 3.
Preferably, the ratio of the area of the conductive leather 2 to the surface area of the steering wheel armature 3 is 0.2-0.9:1, for example the ratio may be 0.2-0.3:1, 0.3-0.4:1, 0.4-0.5:1, 0.6-0.7:1, 0.7-0.8:1 or 0.8-0.9: 1. Also preferably, the conductive leather 2 can cover the surface of the steering wheel framework 3 in a large area like the traditional leather, so as to improve the area of electrocardio acquisition, increase the effective acquisition time and not influence the driving. The ratio of the surface area of the conductive leather 2 to the surface area of the steering wheel frame 3 can be selected by the steering wheel manufacturer according to actual requirements. For example, in the case of manufacturing a steering wheel for racing, the ratio of the surface area of the conductive leather 2 to the surface area of the steering wheel skeleton 3 may be selected to be 0.8-0.9: 1; when the steering wheel is manufactured for a coach bus, the ratio of the area of the conductive leather 2 to the surface area of the steering wheel framework 3 can be selected to be 0.2-0.3: 1.
In a preferred embodiment, as shown in fig. 2, an insulating layer 4 is disposed between the steering wheel frame 3 and the conductive leather 2. Preferably, the insulating layer material 4 is an insulating polymer material. The type of the insulating polymer material may be selected by the manufacturer of the steering wheel according to actual needs, and may be selected from one or more of polydimethylsiloxane, phenolic resin, polyurethane and other insulating polymer materials.
According to a second aspect of the utility model, as shown in fig. 3, in a preferred embodiment, the utility model provides a vital signs monitoring system, which comprises a steering wheel 1 capable of collecting electrocardiographic data, an identification device 5 and an information processing device 6. The conductive leather 2 of the steering wheel 1 is electrically connected with the information processing device 6 through a conducting wire, the identification device 5 is in communication connection with the information processing device 6, for example, the identification device 5 is in wireless or wired connection, and research and development or production personnel can select the connection mode of the identification device 5 and the information processing device 6 according to actual requirements. For example, the wireless connection mode may be one of bluetooth, WiFi, 3G, 4G or 5G; the wired connection is that the identification device 5 and the information processing device 6 are electrically connected through a wire.
Preferably, the identity recognition device 5 recognizes the identity of the driver, acquires the electrocardiogram data through the conductive leather 2 of the steering wheel 1 after the identity is confirmed, and binds the electrocardiogram data acquired by the steering wheel 1 with the individual through the identity recognition device 5, so as to prevent the problem that the electrocardiogram data acquired by the steering wheel 1 can not be matched with the individual health condition due to indiscriminate acquisition of the electrocardiogram data.
Preferably, the identification means 5 is an image acquisition device or a connection device with identification information.
In particular, the image capturing device may be an image capturing camera, such as model No. HY7131R, manufactured by modern companies. More preferably, the image acquisition camera is positioned on the same horizontal line with a rearview mirror in the vehicle, so that the complete facial information of a driver can be acquired. In the actual use process, when a driver sits on a driver seat, the image acquisition camera acquires facial information of the driver, and identity identification is completed according to a facial identification algorithm. The face recognition algorithm employs feature face based Principal Component Analysis (PCA). The algorithm comprises the steps of constructing a principal component subspace according to a group of face training samples, projecting an image acquired by an acquisition camera onto the principal component subspace during monitoring to obtain a group of projection coefficients, and comparing the projection coefficients with a prestored face image mode of a driver so as to finish identity recognition.
Specifically, the connection device with the identity information may be a smartphone or a tablet computer, such as an iPad, to which the driver identity information is bound. The driver is connected with the information processing device 6 through a mobile phone or an iPad bound with identity information in a wireless connection mode, and the identity information of the driver is determined while the connection is completed.
Preferably, the information processing device 6 comprises an electrocardiogram data processing module, which is used for amplifying, filtering and signal conversion processing the electrocardiogram data signals collected by the conductive leather 2. The data processing device 6 may be a BMD101 or CN121 chip or the like which is conventionally sold in the market.
Preferably, the information processing device 6 further includes a communication module, and the communication module is selected from one of a bluetooth module, a WiFi module, a 3G module, a 4G module, or a 5G module.
As shown in fig. 4 and 5, according to a third aspect of the present invention, in a preferred embodiment, the present invention provides a vital sign data monitoring method, comprising the steps of:
step S1: confirming the identity information of the driver by using the identity recognition device 5; for example, the driver uses the identity information prestored in the mobile phone or the iPad to complete identity confirmation, or the driver uses the image acquisition camera to perform face recognition to complete identity confirmation.
Step S2: the method comprises the steps that a steering wheel 1 capable of collecting electrocardio data is used for collecting the electrocardio data of a driver; for example, the driver grips the surfaces of the two pieces of conductive leather 2 with both hands, so that the electrocardiographic data is transmitted to the conductive leather 2 and collected.
Step S3: the acquired electrocardiogram data are processed by the information processing device 6 to monitor the vital signs of the driver. For example, the electrocardiographic data acquired by the conductive leather 2 is transmitted to the electrocardiographic data processing module of the information processing device 6 through a wire for processing, and the processing comprises the steps of amplifying the electrocardiographic data, filtering to remove clutter signals, converting into digital electrocardiographic data, extracting effective values in the digital electrocardiographic data, calculating to obtain a heart rate value, and drawing the effective values to obtain an electrocardiogram.
Preferably, in step S2, the step of collecting the electrocardiographic data of the driver further includes controlling a collection time period, where the collection time period is an effective time of the accumulated electrocardiographic collection. The driver can often leave the steering wheel in the driving process, rotate the steering wheel or get off the vehicle halfway for rest, so that normal electrocardio data cannot be acquired, the process is invalid time for electrocardio acquisition, and the acquisition time period is not accumulated. Only the effective time for acquiring the electrocardio data when the hand grips the steering wheel is accumulated into the acquisition time period. More preferably, the collection time period is 0-36 hours. The driver may set the time period as desired, which may be, for example, one of 0-4 hours, 0-8 hours, 0-12 hours, 0-16 hours, 0-20 hours, 0-24 hours, 0-28 hours, 0-32 hours, or 0-36 hours. For example, the driver needs to analyze the dynamic electrocardiogram data, and the time period can be set to 0-24 hours.
Preferably, in step S3, the ecg data processing module uses a BMD101 chip or a CN121 chip.
Preferably, in step S3, the filtering employs a filtering method of wavelet transform: firstly, removing baseline drift, processing noises such as power frequency interference and the like, then carrying out discrete wavelet transformation, wherein a wavelet base selects a tightly-supported orthogonal wavelet, namely a Daubechies (dbN) wavelet, and realizing wavelet threshold denoising by adopting a Mallat algorithm.
Preferably, the step S3 further includes the step S31: the electrocardiogram data are uploaded to a cloud server and/or a user terminal through a communication module. For example, the information processing device 6 wirelessly transmits the electrocardiographic data to the cloud server for storage through the 3G, 4G or 5G module, and a visitor of the cloud server can provide value-added services or related suggestions according to the transmitted values. For example, the electrocardiogram data is transmitted to a mobile phone end or a PC end of the user through Bluetooth for storage, so that the user can conveniently check and see a doctor; the electrocardio data are transmitted to the central control screen in a wired mode, so that the user can conveniently check the electrocardio data.
Preferably, the step S3 further includes the step S32: the driver health status is determined. For example, according to the electrocardiographic data, the obtained heart rate value is judged whether the heart rate value is lower than the lower threshold of the normal range of the user or higher than the upper threshold of the normal range of the user. The normal range of the user is set in advance and can be obtained through hospital monitoring; by analyzing the electrocardiogram, the user is found whether heart diseases exist or not, and whether the risk of sudden cardiac arrest exists or not is judged. The method for judging whether the heart disease exists is a decision tree method combining wavelet transformation and PCA-ICA, and comprises the following two steps: the first step is extracting the basis of the features of the electrocardio data, using the coefficient of wavelet transform as an initial feature vector, then using a PCA-ICA combined method to complete the optimization of the features, and adding RR interphase to form a complete feature vector; and secondly, training a model by using an algorithm to complete the classification of arrhythmia, using a decision tree as a classifier of the system, and establishing a tree reflecting the classification of the whole system by using an ID3 algorithm, thereby realizing the diagnosis of heart disease.
According to a fourth aspect of the utility model, in a preferred embodiment, the utility model provides an actuator 7 for performing the vital sign data monitoring method described above. For example, the actuator 7 may be a device built up of an MCU, a capacitor and a resistor. The MCU may be MSP430 produced by Texas instruments or other common MCU. For example, the actuator 7 may be a chip manufactured by microfabrication.
As shown in fig. 6, according to the fifth aspect of the present invention, in a preferred embodiment, the vital signs monitoring system provided by the present invention further includes the above-mentioned actuator 7 and the vehicle-mounted central control assembly 4, the vehicle-mounted central control assembly 4 is electrically connected to the information processing device 6 and the actuator 7 respectively, and the actuator 7 is electrically connected to the information processing device 6.
Preferably, the vehicle-mounted central control assembly 4 is electrically connected with the information processing device 6 through a lead, the vehicle-mounted central control assembly 4 is electrically connected with the actuator 7 through a lead, and the actuator 7 is electrically connected with the information processing device 6 through a lead.
Preferably, the onboard central control assembly 4 comprises energizing means, such as a battery. The energy supply device is respectively and electrically connected with a steering wheel 1 which can collect electrocardio data, an identity recognition device 5, an information processing device 6 and an actuator 7.
According to a sixth aspect of the utility model, in a preferred embodiment, the utility model provides the use of the vital signs monitoring system described above for monitoring the health status of a driver.
Preferably, the vital sign monitoring system can be applied to the field of automobiles, the electrocardio acquisition is completed through the steering wheel 1 in the vital sign monitoring system, the identity is confirmed through the identity recognition device 5, the electrocardio data processing is completed through the information processing device 6, the vital sign data monitoring step is completed through the actuator 7, and the energy supply device in the vehicle-mounted central control assembly 4 provides energy for the vital sign monitoring system. Based on the collected electrocardio data, the health condition of the driver is obtained, and the vital sign monitoring system can be used for monitoring the health condition of the driver.
Example 1
In a specific preferred embodiment, as shown in fig. 7, the steering wheel 1 capable of collecting electrocardiographic data of the present invention comprises a conductive leather 2 located on a steering wheel skeleton 3. The conductive leather 2 is symmetrically distributed on the surface of the steering wheel framework 3, 90% of the surface area of the steering wheel framework 3 is covered, and a polydimethylsiloxane film is arranged between the conductive leather 2 and the steering wheel framework 3, so that the conductive leather 2 is prevented from being electrically connected with the steering wheel framework 3, and the electrocardio data cannot be normally acquired. The conductive leather 2 is connected with the information processing device 6 through a lead, the information processing device 6 comprises an information processing circuit, a BMD101 chip and a Bluetooth module, and the information processing circuit is a board card welded with electronic components such as capacitors and resistors on a PCB. The actuator 7 is a texas instruments MSP430 soldered to the information processing circuit. An image acquisition camera with the model number HY7131R, which is produced by modern companies, is used as the identity recognition device 5, is positioned at the same horizontal line with a rearview mirror in the automobile, and is connected with the information processing circuit through a lead. The vehicle-mounted central control assembly 4 is a central control integrated circuit board and a storage battery in the automobile, the central control integrated circuit board is electrically connected with the actuator 7 through a lead, the central control integrated circuit board is electrically connected with the information processing circuit through a lead, and the storage battery provides power for the central control integrated circuit board, the information processing circuit and the actuator 7.
In a classic use scene, a driver starts the automobile in the automobile, a storage battery in the vehicle-mounted central control assembly 4 provides electric energy for the central control integrated circuit board, the information processing circuit and the actuator 7, and the electric energy is provided for the image acquisition camera through the lead and the information processing circuit. After a driver sits on a driver seat, the image acquisition camera starts to acquire facial images of the driver, the images acquired by the acquisition camera are projected onto the principal component subspace to obtain a group of projection coefficients, and the group of projection coefficients are compared with a prestored facial image mode of the driver, so that identity recognition is completed. Or the driver opens the mobile phone or the iPad, the built-in Bluetooth is used for completing connection with the Bluetooth module in the information processing device 6, and the mobile phone or the iPad has the identity information bound with the driver, so that the identity information of the driver is confirmed when the connection is completed. For example, the driver is a, and after the driver is identified by identification, the acquired electrocardiogram data and the result based on the electrocardiogram data analysis are matched with a. A driver holds the steering wheel 1 by hand, electrocardio data collected by the conductive leather 2 is transmitted to the information processing device 6 through a lead, an information processing circuit and a BMD101 chip in the information processing device 6 sequentially process the electrocardio data, and the processed electrocardio data is transmitted to a mobile phone end or a PC end of a user through Bluetooth for storage, so that the user can conveniently check and see a doctor; the processed electrocardiogram data are transmitted to the vehicle-mounted central control screen in a wired mode, so that the user can check the electrocardiogram data conveniently.
The built-in software of the mobile phone end, the PC end and the automobile has an artificial intelligence algorithm to further process the electrocardio data, firstly, baseline drift removal, power frequency interference and other noise processing are carried out, then discrete wavelet transformation is carried out, wherein a wavelet base selects a tightly-supported orthogonal wavelet, namely a Daubechies (dbn) wavelet, and wavelet threshold denoising is realized by adopting a Mallat algorithm.
And (4) performing R-wave extraction on the filtered signals, and taking the number of RR intervals per minute as a heart rate value. The R wave extraction method comprises the following specific steps: firstly, obtaining the derivative of the filtered electrocardio data at each point; second, find dSnDt > 0 and dSn+1Points of/dt < 0, forming the derivative values at these points into a new set D0＝{D1,D2,...,DKCorresponding to an electrocardiographic value of R0＝{R1,R2,...,RK-and the corresponding positions LOC ═ n of these electrocardiographic values in the raw data set S1,n2,...,nKAs an alternative to the value of R, where K is D0、R0The number of middle elements; step three, find out set D0Setting a threshold value a for the derivative value at each sampling point1If so, then the determination condition is: if Dk＞a1Then the corresponding electrocardiographic values at these data will become the new R value candidate set R0newRecording the data in the original dataCorresponding location set LOC innew. Here, the
N is the total number of sampling points; the fourth step, for R0newFurther screening was performed according to the following conditions:
finally, a real R value set Rt is formed1,Rt2,...,RtMAnd the corresponding positions LOC of these data in the original data St. Heart rate value (XINLV) calculation formula:
then, based on a decision tree method combining wavelet transformation and PCA-ICA, the heart disease is judged, and the method specifically comprises the following steps: the first step is extracting the basis of the features of the electrocardio data, using the coefficient of wavelet transform as an initial feature vector, then using a PCA-ICA combined method to complete the optimization of the features, and adding RR interphase to form a complete feature vector; and secondly, training a model by using an algorithm to complete the classification of arrhythmia, establishing a tree reflecting the classification of the whole system by using an ID3 algorithm by using a decision tree as a classifier of the system, thereby realizing the diagnosis of heart disease and judging the health state of a driver.
The foregoing detailed description of the preferred embodiments of the utility model has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (14)
1. A steering wheel capable of collecting electrocardiogram data is characterized by comprising a steering wheel framework and two unconnected conductive leathers; the conductive leather is positioned on the surface of the steering wheel framework; and the steering wheel framework and the conductive leather are not conductive.
2. The steering wheel capable of collecting electrocardiographic data according to claim 1, wherein two unconnected pieces of said electrically conductive leather are symmetrically distributed on said steering wheel skeleton.
3. The steering wheel capable of acquiring electrocardiographic data according to claim 1, wherein the ratio of the total area of the conductive leather to the surface area of the steering wheel skeleton is 0.2-0.9:1, that is, the conductive leather covers 20-90% of the surface area of the steering wheel skeleton.
4. The steering wheel capable of collecting electrocardiographic data according to claim 1, wherein an insulating layer is arranged between the steering wheel skeleton and the conductive leather.
5. The steering wheel capable of collecting electrocardiographic data according to claim 4, wherein the insulating layer is made of an insulating polymer material.
6. A vital signs monitoring system, which is characterized by comprising a steering wheel capable of acquiring electrocardio data according to any one of claims 1 to 5, and further comprising an identity recognition device and an information processing device; wherein,
the conductive leather is electrically connected with the information processing device;
the identity recognition device is in communication connection with the information processing device.
7. The vital sign monitoring system of claim 6, wherein the identification device is an image capture device or a smartphone or tablet bound with driver identification information.
8. The vital signs monitoring system of claim 7, wherein the image capture camera is substantially level with the interior rearview mirror.
9. The vital sign monitoring system of claim 6, wherein the information processing device comprises an electrocardiographic data processing module, the electrocardiographic data processing module configured to perform signal amplification, filtering, and signal conversion on the electrocardiographic data.
10. The vital sign monitoring system of claim 9, wherein the electrocardiographic data processing module comprises a BMD101 chip or a CN121 chip.
11. The vital signs monitoring system of claim 6, wherein the information processing device further comprises a communication module selected from one or more of a bluetooth module, a WiFi module, and a cellular network module.
12. The vital signs monitoring system of claim 6, further comprising an actuator and an onboard central control assembly; the actuator is used for controlling the vital sign monitoring system to execute the vital sign monitoring method; the vehicle-mounted central control assembly is electrically connected with the information processing device and the actuator respectively, and the actuator is electrically connected with the information processing device.
13. The vital sign monitoring system of claim 12, wherein the actuator is a texas instruments MCU model MSP 430.
14. The vital sign monitoring system of claim 12, wherein the on-board central control assembly includes a power supply device electrically coupled to and configured to supply power to the steering wheel, the identification device, the information processing device, and the actuator, respectively.
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