CN104943727A - Bioassay car steering wheel - Google Patents
Bioassay car steering wheel Download PDFInfo
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- CN104943727A CN104943727A CN201510420808.XA CN201510420808A CN104943727A CN 104943727 A CN104943727 A CN 104943727A CN 201510420808 A CN201510420808 A CN 201510420808A CN 104943727 A CN104943727 A CN 104943727A
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- vehicle steering
- fixed pattern
- heart rate
- acquisition module
- rate acquisition
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Abstract
The invention provides a bioassay car steering wheel. The bioassay car steering wheel comprises a steering wheel body, a heart rate acquisition module and an upper PC, wherein the heart rate acquisition module is mounted on the steering wheel body to acquire physiological driving characteristics of a driver; the upper PC is electrically connected with the heart rate acquisition module to receive data of the heart rate acquisition module and perform waveform display. The bioassay car steering wheel utilizes a pulse blood oxygen sensor, an analog front-end chip and a single chip microcomputer which are mounted on the car steering wheel to monitor the main physiological status information of the driver in real time to realize risk pre-judging, pre-warning, alarming, prompting and other auxiliary safe driving functions in advance so as to reduce the accident incidence.
Description
Technical field
The present invention relates to a kind of bearing circle of vehicle, especially, relate to a kind of biometric fixed pattern vehicle steering can measuring chaufeur bio signal.
Background technology
Along with the development of society, the lifting of the level of consumption, automobile has entered increasing family as main walking-replacing tool, for everybody provides facility in life.But in today of auto trade develop rapidly, traffic accident also becomes the sharp sword that threatens people's life security often.Just as we understand, driver status is not good is exactly cause traffic accident reason that must face directly.Drunk driving, fatigue driving, and in driving procedure, burst disease all will be bred disaster.
With regard to vehicle steering, as the part that automotive interior is very important, chaufeur basic continous when steering vehicle constantly uses manual manipulation bearing circle.The most function singleness of bearing circle of prior art, can not examine and seize the bio signal of getting chaufeur hand and avoids because driver status is not good and meet accident by utilization orientation.
Summary of the invention
In order to solve prior art vehicle steering function singleness, the technical matters of chaufeur hand bio signal can not be obtained, the invention provides biometric fixed pattern vehicle steering.
A kind of biometric fixed pattern vehicle steering, comprise bearing circle body, heart rate acquisition module and upper computer, described heart rate acquisition module comprises the pulse oximetry sensor, analog front-end chip and the micro controller system that are electrically connected to each other, described pulse oximetry sensor is installed on described bearing circle body to gather its physiological status parameter by chaufeur hand comes in contact, described analog front-end chip and described micro controller system carry out treatment and analysis to described physiological status parameter and draw visual pattern, and described upper computer is electrically connected described heart rate acquisition module to receive and to show described visual pattern.
In a kind of preferred embodiment of biometric fixed pattern vehicle steering provided by the invention, described heart rate acquisition module also comprises USB interface, waveform oscilloscope and data transmission port.
In a kind of preferred embodiment of biometric fixed pattern vehicle steering provided by the invention, described analog front-end chip is AFE4400 analog front-end chip, described micro controller system is MSP430F149 micro controller system.
In a kind of preferred embodiment of biometric fixed pattern vehicle steering provided by the invention, described waveform oscilloscope is OLED waveform oscilloscope, and described data transmission port is USB-RS232 data transmission port.
In a kind of preferred embodiment of biometric fixed pattern vehicle steering provided by the invention, described bearing circle body comprises the acquisition of signal district being located at its two opposite sides, and described pulse oximetry sensor is located at described acquisition of signal district.
In a kind of preferred embodiment of biometric fixed pattern vehicle steering provided by the invention, described heart rate acquisition module also comprises bluetooth module, by described physiological status parameter and visual pattern simultaneous display in described upper computer.
In a kind of preferred embodiment of biometric fixed pattern vehicle steering provided by the invention, described upper computer can be any one in vehicle-mounted system, mobile phone and panel computer.
In a kind of preferred embodiment of biometric fixed pattern vehicle steering provided by the invention, the quantity in described acquisition of signal district comprises four.
In a kind of preferred embodiment of biometric fixed pattern vehicle steering provided by the invention, described pulse oximetry sensor comprises pulse reflection pulse probe.
Compared with prior art, described biometric fixed pattern vehicle steering advantage provided by the invention is:
Described biometric fixed pattern vehicle steering is by AFE4400 analog front-end chip and described pulse oximetry sensor, contact by hand and described bearing circle body obtains the pulse frequency of chaufeur, respiratory rate and heart rate, then the physiological status of chaufeur is identified, risk (as drunk driving, fatigue driving, sudden illness) is driven by algorithm evaluation, and make the motoring condition change desired signal being conducive to chaufeur, simplicity of design, cost is low.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the perspective view of biometric fixed pattern vehicle steering provided by the invention;
Fig. 2 is the fundamental diagram of the fixed pattern of biometric shown in Fig. 1 vehicle steering.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1 and Fig. 2, wherein Fig. 1 is the perspective view of biometric fixed pattern vehicle steering provided by the invention, and Fig. 2 is the fundamental diagram of the fixed pattern of biometric shown in Fig. 1 vehicle steering.
Biometric fixed pattern vehicle steering 1 comprises bearing circle body 11, heart rate acquisition module and upper computer 13.
Bearing circle body 11 comprises four the acquisition of signal districts 111 being located at its two opposite sides.
Heart rate acquisition module comprise be electrically connected to each other pulse oximetry sensor 121, analog front-end chip 123, micro controller system 125, USB interface (not shown), waveform oscilloscope (not shown) and data transmission port (not shown), bluetooth module (not shown).
In detailed description of the invention, analog front-end chip 123 selects AFE4400 analog front-end chip.AFE4400 analog front-end chip is a fully-integrated AFE(analog front end) (AFE) for pulse oximeter application, has pulse sorting and fixed-time control flexibly.Comprise one at chip internal and have the low-noise receiver passage of integrated analog digit converter (ADC), LED emission control parts and one for the diagnosis function parts of sensor and LED fault detection, realize the measurement of pulse by reflective or projection-type sensor.Therefore, pulse oximetry sensor 121 selects pulse reflection pulse to pop one's head in.
Pulse oximetry sensor 121 is located at acquisition of signal district 111, for the pulse signal of mobile phone right-hand man, its principle of measurement is: pulse reflection pulse probe comprises optical reflector, optical reflector is integrated in the LED of infrared light and ruddiness and phototransistor in an encapsulation, because the blood flowed in the blood vessel that is thick with in peripheral tissues has certain absorption power for light, and the slight change that the light absorption/reflectance characteristics of peripheral tissues can produce along with wherein blood flow volume and changing, the absorption spectrum through measuring reflected light just can reach the object of measurement.This class feature is also beated regularly along with heart and changes.Pulse reflection pulse pop one's head in not monoenergetic enough accurately record intravascular volume change, and only need by any position of pulse oximetry sensor 121 body contact in practical operation, when the CBF of contact site and blood oxygen concentration change with heartbeat, pulse reflection pulse probe just receives and periodically shrinks the arteriopalmus light pulse signal with diastole with heart, thus collects heartbeat signal.
Micro controller system 125 selects MSP430F149 micro controller system.MSP430 micro controller system is a kind of mixed-signal processor of 16 super low-power consumptions.A lot of analogous circuit peripheral hardware and typical number word modules are integrated in chip by it.Under normal circumstances, can meet the demands completely for common practical application single-chip, not only make the complexity of peripheral control circuits reduce thus, more save PCB space, also reduce design cost simultaneously, improve the reliability of system.MSP430 micro controller system also has powerful processing capacity, the one-cycle instruction cycle, and carries hardware multiplier.In addition, it also has peripheral module on high performance analog technology and abundant sheet, also has the advantages such as IDE is convenient, efficient simultaneously.The main function components of MSP430F149 micro controller system comprises CPU, memory device and peripheral module.The CPU structure of MSP430 series monolithic designs according to the opinion of reduced instruction set computer and high transparency, substantially be as good as with general microprocessor, and selected structure and the instruction repertoire of Control-oriented, while improving instruction implementation speed and efficiency, also strengthen the processing capability in real time of MSP430 micro controller system.Its peripheral module is connected with CPU by address bus (MAB), data bus (MDB), termination service and request.
OLED waveform oscilloscope selected by waveform oscilloscope, and data transmission port selects USB-RS232 data transmission port.Pulse oximetry sensor 121 selects pulse reflection pulse to pop one's head in.
Biometric fixed pattern vehicle steering 1 provided by the invention, employ the photoplethysmography (PPG) that pulses measure technology is applied, the pulse oximetry sensor 121 with pulse reflection pulse probe is utilized to carry out the collection of chaufeur blood oxygen concentration, signal transacting is carried out through AFE4400 analog front-end chip 123, filtering, amplify and analogue to digital conversion, obtain corresponding pulse digital signal, and signal is delivered to MSP430 micro controller system 125 and carry out treatment and analysis calculating, thus can heart rate be changed into, other parameters such as respiratory rate and blood oxygen concentration are used for physiological characteristic and pass judgment on, pass through USB interface again, waveform image is transferred to upper computer 13 and carries out waveform display by data transmission port and/or bluetooth module, thus dangerous anticipation and early warning can be provided further, the auxiliary securities such as warning and prompting drive function.
Compared with prior art, the advantage of biometric fixed pattern vehicle steering 1 provided by the invention is:
Biometric fixed pattern vehicle steering 1 is by AFE4400 analog front-end chip 123 and pulse oximetry sensor 121, the pulse signal that contact by hand and bearing circle body 11 obtains chaufeur changes, and respiratory rate and heart rate can be changed into, then the physiological status of chaufeur is identified, drive risk (as drunk driving, fatigue driving, sudden illness) by algorithm evaluation, and make the motoring condition change desired signal being conducive to chaufeur.This kind of design achieves contact measurement, avoids chaufeur and uses traditional type heart rate finger-clipped to measure the inconvenience brought, simply, and with low cost.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a biometric fixed pattern vehicle steering, it is characterized in that, comprise bearing circle body, heart rate acquisition module and upper computer, described heart rate acquisition module comprises the pulse oximetry sensor be electrically connected to each other, analog front-end chip and micro controller system, described pulse oximetry sensor is installed on described bearing circle body to gather its physiological status parameter by chaufeur hand comes in contact, described analog front-end chip and described micro controller system carry out treatment and analysis to described physiological status parameter and draw visual pattern, described upper computer is electrically connected described heart rate acquisition module to receive and to show described visual pattern.
2. biometric fixed pattern vehicle steering according to claim 1, is characterized in that, described heart rate acquisition module also comprises USB interface, waveform oscilloscope and data transmission port.
3. biometric fixed pattern vehicle steering according to claim 1, is characterized in that, described analog front-end chip is AFE4400 analog front-end chip, described micro controller system is MSP430F149 micro controller system.
4. biometric fixed pattern vehicle steering according to claim 2, is characterized in that, described waveform oscilloscope is OLED waveform oscilloscope, and described data transmission port is USB-RS232 data transmission port.
5. biometric fixed pattern vehicle steering according to claim 1, is characterized in that, described bearing circle body comprises the acquisition of signal district being located at its two opposite sides, and described pulse oximetry sensor is located at described acquisition of signal district.
6. biometric fixed pattern vehicle steering according to claim 2, is characterized in that, described heart rate acquisition module also comprises bluetooth module, by described physiological status parameter and visual pattern simultaneous display in described upper computer.
7. biometric fixed pattern vehicle steering according to claim 1, is characterized in that, described upper computer can be any one in vehicle-mounted system, mobile phone and panel computer.
8. biometric fixed pattern vehicle steering according to claim 5, is characterized in that, the quantity in described acquisition of signal district comprises four.
9. biometric fixed pattern vehicle steering according to claim 5, is characterized in that, described pulse oximetry sensor comprises pulse reflection pulse probe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510420808.XA CN104943727A (en) | 2015-07-17 | 2015-07-17 | Bioassay car steering wheel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510420808.XA CN104943727A (en) | 2015-07-17 | 2015-07-17 | Bioassay car steering wheel |
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| CN104943727A true CN104943727A (en) | 2015-09-30 |
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Cited By (7)
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| CN105748050A (en) * | 2016-04-26 | 2016-07-13 | 奇瑞汽车股份有限公司 | Car-mounted health diagnosis system |
| CN106361321A (en) * | 2016-08-26 | 2017-02-01 | 中国科学院深圳先进技术研究院 | Electric physiological signal processing device based on single chip microcomputer |
| CN107226123A (en) * | 2017-01-16 | 2017-10-03 | 北京兴科迪电子技术研究院 | A kind of multi-mode biological response steering wheel |
| CN108814566A (en) * | 2018-04-04 | 2018-11-16 | 太原理工大学 | Intelligent portable human body condition sensor |
| CN109532999A (en) * | 2018-12-12 | 2019-03-29 | 南京七岩电子科技有限公司 | A kind of electrocardio steering wheel |
| CN110477888A (en) * | 2019-09-25 | 2019-11-22 | 江苏启润科技有限公司 | Vehicle-mounted human multi-parameter monitors terminal |
| CN112277796A (en) * | 2020-10-13 | 2021-01-29 | 浙江吉利控股集团有限公司 | Steering wheel, trigger signal generating device and vehicle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105748050A (en) * | 2016-04-26 | 2016-07-13 | 奇瑞汽车股份有限公司 | Car-mounted health diagnosis system |
| CN106361321A (en) * | 2016-08-26 | 2017-02-01 | 中国科学院深圳先进技术研究院 | Electric physiological signal processing device based on single chip microcomputer |
| CN107226123A (en) * | 2017-01-16 | 2017-10-03 | 北京兴科迪电子技术研究院 | A kind of multi-mode biological response steering wheel |
| CN108814566A (en) * | 2018-04-04 | 2018-11-16 | 太原理工大学 | Intelligent portable human body condition sensor |
| CN109532999A (en) * | 2018-12-12 | 2019-03-29 | 南京七岩电子科技有限公司 | A kind of electrocardio steering wheel |
| CN110477888A (en) * | 2019-09-25 | 2019-11-22 | 江苏启润科技有限公司 | Vehicle-mounted human multi-parameter monitors terminal |
| CN112277796A (en) * | 2020-10-13 | 2021-01-29 | 浙江吉利控股集团有限公司 | Steering wheel, trigger signal generating device and vehicle |
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Application publication date: 20150930 |