CN204149972U - Chaufeur survivability sign detecting device - Google Patents
Chaufeur survivability sign detecting device Download PDFInfo
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- CN204149972U CN204149972U CN201420447827.2U CN201420447827U CN204149972U CN 204149972 U CN204149972 U CN 204149972U CN 201420447827 U CN201420447827 U CN 201420447827U CN 204149972 U CN204149972 U CN 204149972U
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Abstract
The utility model discloses a kind of chaufeur survivability sign detecting device, this device filters amplifying unit, central process unit DSP arithmetic element and rear end alarm unit by signal gathering unit, front end signal and forms, and wherein signal gathering unit is be installed in vehicle steering often to touch position and touch micro photo electric survey meter; The sign feedback signal gathering driver obtains chaufeur heart rate and blood oxygen concentration accurately for rear signal process, computing.Chaufeur condition is judged and correspondence sends alerting signal according to the threshold values preset or restriction.The detecting device that the utility model proposes, utilize the human body oxygen content of blood to the tactile sensor of the principle custom encapsulation of infrared and red light absorption difference, achieve the detection of the chaufeur human life power sign of summary and eliminate the sense of discomfort of conventional test methodologies; Can continue and reflect the condition of chaufeur in time, providing accurate and actv. alarm, ensureing the life security of occupant.
Description
Technical field
The utility model relates to a kind of driving safety device and using method thereof, particularly relate to a kind of automobile chaufeur survivability feature detection device and method of inspection thereof, by the technical solution that compact software and hardware combining detects the heart rate of chaufeur in real time, constantly, blood oxygen concentration guarantees safe driving.
Background technology
At present in auto trade, substantially belong to blank about survivability feature detection this part of chaufeur in automobile, because it is substantially unlikely that the complete equipment of hospital is moved into automobile, summary test is simultaneously the technical matters needing to be broken through always.
Current common test method is generally directly carry out blood sampling or finger-clipped, but substantially or can not bring the convenience that cannot use in automobile.Particularly finger-clipped, the problem such as have constriction when measuring and blood flow is obstructed, also cannot carry out actv. continuance test.
As everyone knows, heart murmur, the too low all directly threat chaufeur of blood oxygen concentration safety when driving, particularly blood oxygen concentration is too low, is very easy to cause fatigue driving.Currently on automobile, carry out detection in survivability sign except alcohol screen test, other successful story essentially no.And fatigue driving has become a large major cause of traffic accident now.Particularly passenger vehicle, driver tired driving has become the very important reason that major traffic accidents occur, and these type of major traffic accidents are in trend occurred frequently.
Summary of the invention
The purpose of this utility model is intended to propose a kind of chaufeur survivability sign detecting device, is reflected the condition of chaufeur by the monitoring of vehicle-mounted human heart rate and blood oxygen concentration in time, provides actv. to report to the police and warning object, the life security of support personnel.
The technical solution that the utility model realizes above-mentioned purpose is: chaufeur survivability sign detecting device, filter amplifying unit, central process unit DSP arithmetic element and rear end alarm unit by signal gathering unit, front end signal to form, it is characterized in that: signal gathering unit is be installed in vehicle steering often to touch position and touch micro photo electric survey meter;
Described front end signal processing unit comprises low-noise receiver passage and the LED transmission part of integrated analog digit converter, and front end signal processing unit is connected with central process unit DSP arithmetic element by a SPI interface;
Described central process unit DSP arithmetic element is the comprehensive microprocessor of described detecting device collecting system control, power management, output alarm signal, digital signal, computing that the modulation of receiving front-end signal processing unit exports obtain heart rate and the blood oxygen concentration of chaufeur, and central process unit DSP arithmetic element is provided with heart rate threshold values for exporting rear end alarm unit drive singal and blood oxygen concentration limit value;
Described rear end alarm unit is driven sends in central process unit DSP arithmetic element instruction of reporting to the police.
Further, described signal gathering unit has the infrared light LED of integration packaging, red-light LED and phototransistor, two LED are modulated and drive penetrates in LED transmission part the light that wavelength is 940nm and 660nm respectively, and phototransistor receives feedback spectrum and exports corresponding current value to front end signal processing unit according to spectral value.
Further, described phototransistor is the signal source of described detecting device from standby mode switch test pattern.
Further, described A and D converter is receive analog signal, filter out noise retain the switching device of actv. digital signal.
Further, described front end signal processing unit is provided with the timing controller that control two LED launch sequential and frequency.
Further, described rear end alarm unit is local alarm type, comprises LED light, the sounding alarm be directly located within the scope of vehicle steering or operator's compartment direct-view.
Further, described rear end alarm unit is remote alarms type, comprises the car audio system or central control system that are outreached by bluetooth or Wifi.
The detecting device that the utility model proposes, compare to prior art and possess comparatively significant advantage: it utilizes the human body oxygen content of blood to the touch sensor of the principle custom encapsulation of infrared and red light absorption difference, achieve the detection of the chaufeur human life power sign of summary and eliminate the sense of discomfort of conventional test methodologies; Can continue and reflect the condition of chaufeur in time, providing accurate and actv. alarm, ensureing the life security of occupant.
Accompanying drawing explanation
Fig. 1 is the system block diagram of the utility model chaufeur survivability sign detecting device.
Detailed description of the invention
The utility model detects blank present case in auto trade in real time to chaufeur survivability sign, and innovation proposes a kind of chaufeur survivability sign detecting device, and proposes the one innovation method of inspection based on this detecting device simultaneously.Reflected the condition of chaufeur by the monitoring of vehicle-mounted human heart rate and blood oxygen concentration in time, provide actv. to report to the police and warning object, the life security of support personnel.
First, filter amplifying unit, central process unit DSP arithmetic element and rear end alarm unit from this chaufeur survivability sign detecting device of hardware system structure of the present utility model form primarily of signal gathering unit, front end signal, as shown in Figure 1.This device is that to make use of haemoglobin in blood different with the contribution ratios of ruddiness to infrared light with oxyhemoglobin, measures the instrument of the blood oxygen saturation of arterial blood.Sensor is integrated in an encapsulation infrared light and ruddiness two LED and phototransistor, need not clamp measuring point during measurement, but just can be achieved the goal by the absorption spectrum measuring reflected light, thoroughly solves the problem of unplessantness displeasure during measurement.For more specifically understanding the innovation essence of such scheme, each several part feature is now described in detail in detail as follows.
Above-mentioned signal gathering unit is be installed in vehicle steering often to touch position and touch micro photo electric survey meter (hereinafter referred to as sensor).According to driver training, the syllabus of national standard, it is have normal place (except indivedual driving habit difference) that chaufeur holds vehicle steering, therefore by the normal touch location of this touch sensor setting in vehicle steering, and can measure chaufeur easily when chaufeur finger touches in this device sensor station.This sensor has the infrared light LED of integration packaging, red-light LED and phototransistor, two LED are modulated and drive penetrates in LED transmission part the light that wavelength is 940nm and 660nm respectively, phototransistor receive feedback spectrum and output current value to front end signal processing unit.
Above-mentioned front end signal processing unit comprises low-noise receiver passage and the LED transmission part of integrated analog digit converter, and front end signal processing unit is connected with central process unit DSP arithmetic element by a SPI interface.
Wherein A and D converter can amplify receiving the low noise signal obtained, noise is carried out actv. filtering and retains actv. signal entering analogue to digital conversion simultaneously, be directly changed into digital signal, this digital signal collected, be then directly fed through DSP digital processing element and calculate.And the radical function of LED transmission part comprises drived control and the conversion of infrared/red emission and photodiode.
In addition, this unit is configurable timing controller also, can control sequential and the frequency of infrared emission part, accomplish good accurate timing.
Above-mentioned central process unit DSP arithmetic element is the comprehensive microprocessor of described detecting device collecting system control, power management, output alarm signal, digital signal, computing that the modulation of receiving front-end signal processing unit exports obtain heart rate and the blood oxygen concentration of chaufeur, and central process unit DSP arithmetic element is provided with heart rate threshold values for exporting rear end alarm unit drive singal and blood oxygen concentration limit value.
First from power management aspect, only just start the work of entering when car engine, then enter standby mode at ordinary times.Utilize the characteristic of photodiode, can perception whether someone enters test mode, only when there being people to enter test, just light infrared/red emitter, can actv. economize energy.
On the other hand, judgement is entered according to DSP computing heart rate/blood oxygen result, when blood oxygen concentration lower than 94% time, then judge that blood oxygen concentration is on the low side, if in continuance test process, blood oxygen concentration is to low variation tendency, also alert status is entered, according to this alert status, chaufeur needs supplemental oxygen of windowing, or rest of stopping.
The wherein collection signal that sends over according to front-end amplifier of DSP computing, carries out the percentum of blood oxygen concentration that continues to calculate chaufeur and the heart rate of chaufeur.Take oxygen haemoglobin (oxyhemoglobin) and absorb light in infrared IR spectral region, the haemoglobin (deoxyhemoglobin) not taking oxygen then absorbs visible red R light.According to such characteristic, corresponding infrared, the red-light LED of the sequential excitation of central process unit, the simultaneously light of each LED of detector synchronization catch.Transformation calculations is carried out according to the return current value that LED drive current value and photodiode receive.Computing formula is blood oxygen concentration=oxyhemoglobin/(oxygenated blood hop protein+deoxyhemoglobin).
The method of calculating of heart rate is then relatively simple, IR/LED drives number of times to be 500 times per second, carry out being set to crest and trough according to the curent change curve that photoelectricity second tube sheet feeds back, usual beat pulse once then produces a crest, now can carry out calculating heart rate according to the time of a generation crest.
This rear end alarm unit is driven sends in central process unit DSP arithmetic element instruction of reporting to the police.According to heart rate value higher than 120 times/second, blood oxygen concentration value lower than 94%, then sends instruction of reporting to the police.Under normal circumstances, type of alarm has local warning and remote alarms, local warning is then directly install LED light or sounding alarm, remote alarms, then pass to external device by bluetooth or Wifi, as auto audio equipment part, after auto audio equipment part receives, can Direct driver sound horn report to the police.
The kind of reporting to the police is divided into a few class according to sound and luminescence, light and slow type, transition type and urgent type, when heart murmur, and heart rate more than 110 time/second more than not to 130 times/second, now sound and glow frequency lower; Suggestion driver peace and quiet also need to have a rest, and continuance test.When heart rate is more than 130 times, and not to 150 times/second, blood oxygen concentration is into downswing, but still more than 94%, is then transition type, now sound and glow frequency moderate, now advise completely chaufeur need to have a rest and test normal after just can drive a car.When heart rate is more than 150 times, or heart rate is lower than 94%, be then that urgent type is reported to the police, can not drive a car.Extensively can't obtain normal value after having a rest, then be necessary inspection in hospital immediately.
Moreover, from the description step by step of the utility model chaufeur survivability sign method of inspection, understand the character of innovation of this solution further.The method realizes based on the embodiment of above-mentioned detection device, comprise step: I, signal gathering unit is installed in vehicle steering and often touches position and settling signal collecting unit, front end signal processing unit, central process unit DSP arithmetic element and be connected with the system of rear end alarm unit, wherein signal gathering unit is touch micro photo electric survey meter, comprises infrared light LED, red-light LED and phototransistor; II, the hand-held bearing circle of chaufeur touch signal collecting unit, front end signal processing unit carries out filter out noise according to the driving current value of two LED with the current value collected, analogue to digital conversion becomes digital signal and export to central process unit DSP arithmetic element; III, central process unit DSP arithmetic element carries out according to digital signal and predefined operation rule the blood oxygen concentration and the heart rate that continue to calculate chaufeur, exports operation result display and drives rear end alarm unit to send instruction of reporting to the police when heart rate and blood oxygen concentration exception.
As refinement, first infrared light LED, red-light LED and phototransistor integration packaging are become signal gathering unit in above-mentioned steps I, and in step II two LED by the modulation of LED transmission part with drive that to penetrate wavelength be respectively the light of 940nm and 660nm, simultaneously phototransistor receive feedback spectrum and output current value to front end signal processing unit.In addition, the alarm unit of rear end described in step III has light and slow type, transition type and urgent type three kinds of alarm modes according to the intensity of anomaly difference of the blood oxygen concentration continuing to calculate and heart rate absolute presupposition standard.
Visible in sum, the detecting device that the utility model proposes and method of inspection thereof, compare to prior art and possess comparatively significant advantage: it utilizes the human body oxygen content of blood to the touch sensor of the principle custom encapsulation of infrared and red light absorption difference, achieve the detection of the chaufeur human life power sign of summary and eliminate the sense of discomfort of conventional test methodologies; Can continue and reflect the condition of chaufeur in time, providing accurate and actv. alarm, ensureing the life security of occupant.
Below embodiment by reference to the accompanying drawings describes, and is intended to be convenient to understand innovation essence of the present utility model, but not limits the claims of the multifarious embodiment of the utility model and requirement with this.In every case understand the utility model, and change or component replacement according to the equivalent structure that above-described embodiment carries out, the design of identical object and effect can be realized, the infringement to present patent application protection content all should be considered as.
Claims (7)
1. chaufeur survivability sign detecting device, filters amplifying unit, central process unit DSP arithmetic element and rear end alarm unit by signal gathering unit, front end signal and forms, it is characterized in that:
Described signal gathering unit is be installed in vehicle steering often to touch position and touch micro photo electric survey meter;
Described front end signal processing unit comprises low-noise receiver passage and the LED transmission part of integrated analog digit converter, and front end signal processing unit is connected with central process unit DSP arithmetic element by a SPI interface;
Described central process unit DSP arithmetic element is the comprehensive microprocessor of described detecting device collecting system control, power management, output alarm signal, digital signal, computing that the modulation of receiving front-end signal processing unit exports obtain heart rate and the blood oxygen concentration of chaufeur, and central process unit DSP arithmetic element is provided with heart rate threshold values for exporting rear end alarm unit drive singal and blood oxygen concentration limit value;
Described rear end alarm unit is driven sends in central process unit DSP arithmetic element instruction of reporting to the police.
2. chaufeur survivability sign detecting device according to claim 1, it is characterized in that: described signal gathering unit has the infrared light LED of integration packaging, red-light LED and phototransistor, two LED are modulated and drive penetrates in LED transmission part the light that wavelength is 940nm and 660nm respectively, and phototransistor receives feedback spectrum and exports corresponding current value to front end signal processing unit according to spectral value.
3. chaufeur survivability sign detecting device according to claim 2, is characterized in that: described phototransistor is the signal source of described detecting device from standby mode switch test pattern.
4. chaufeur survivability sign detecting device according to claim 1, is characterized in that: described A and D converter is receive analog signal, filter out noise retain the switching device of actv. digital signal.
5. chaufeur survivability sign detecting device according to claim 1, is characterized in that: described front end signal processing unit is provided with the timing controller that control two LED launch sequential and frequency.
6. chaufeur survivability sign detecting device according to claim 1, is characterized in that: described rear end alarm unit is local alarm type, comprises LED light, the sounding alarm be directly located within the scope of vehicle steering or operator's compartment direct-view.
7. chaufeur survivability sign detecting device according to claim 1, be is characterized in that: described rear end alarm unit is remote alarms type, comprises the car audio system or central control system that are outreached by bluetooth or WiFi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420447827.2U CN204149972U (en) | 2014-08-11 | 2014-08-11 | Chaufeur survivability sign detecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420447827.2U CN204149972U (en) | 2014-08-11 | 2014-08-11 | Chaufeur survivability sign detecting device |
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| CN204149972U true CN204149972U (en) | 2015-02-11 |
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| CN201420447827.2U Expired - Fee Related CN204149972U (en) | 2014-08-11 | 2014-08-11 | Chaufeur survivability sign detecting device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192082A (en) * | 2014-08-11 | 2014-12-10 | 苏州易动智能科技有限公司 | Driver vitality sign detection device and method |
| WO2016082359A1 (en) * | 2014-11-24 | 2016-06-02 | 京东方科技集团股份有限公司 | Automobile steering wheel |
| CN108090991A (en) * | 2018-01-26 | 2018-05-29 | 成都精灵云科技有限公司 | Safety driving monitoring system based on distributed storage |
-
2014
- 2014-08-11 CN CN201420447827.2U patent/CN204149972U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192082A (en) * | 2014-08-11 | 2014-12-10 | 苏州易动智能科技有限公司 | Driver vitality sign detection device and method |
| WO2016082359A1 (en) * | 2014-11-24 | 2016-06-02 | 京东方科技集团股份有限公司 | Automobile steering wheel |
| US10028693B2 (en) | 2014-11-24 | 2018-07-24 | Boe Technology Group Co., Ltd. | Vehicle steering wheel |
| CN108090991A (en) * | 2018-01-26 | 2018-05-29 | 成都精灵云科技有限公司 | Safety driving monitoring system based on distributed storage |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150211 Termination date: 20180811 |
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| CF01 | Termination of patent right due to non-payment of annual fee |