Utility model content
Embodiment of the present utility model provides a kind of vehicle steering, solves chaufeur when fatigue state is driven a vehicle, easily traffic accident occurs, and reduces the problem of traffic safety.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of vehicle steering, comprise wheel rim, be provided with at least one hemoxometer in the hand grasp area of described wheel rim, described hemoxometer is connected with control setup; Described control setup is also connected with alarming device; Blood oxygen saturation numerical value in the chaufeur body that described control setup detects according to described hemoxometer, when judging that chaufeur is fatigue driving, described control setup controls described alarming device work.
Preferably, described wheel rim back surfaces is provided with groove, and the corresponding described wheel rim side central area of described groove is arranged; Described hemoxometer is positioned at described groove, and is fixed in described groove by cover plate for sealing.
Be specifically as follows, described groove comprises two, and two described grooves are symmetrical arranged in described wheel rim two side ends; Along described wheel rim circumferencial direction, each described groove is high, the middle low arc groove in both sides.
Further, described cover plate conforms to the structure of described arc groove, and described cover plate is transparent plastic sheet; Described cover plate is adhesively fixed with described wheel rim and is connected.
Wherein, in each described groove, be provided with four described hemoxometers, and four described hemoxometers are along described wheel rim circumferencial direction equidistant arrangement.
Hemoxometer is specifically as follows, and the probe of each described hemoxometer comprises a dual wavelength light-emitting diode and a photodiode; Described light-emitting diode emission of light, described photodiode shines the reflected light rays after human body for receiving described emission of light.
Preferably, described alarming device comprises read out instrument, and described read out instrument is connected with described control setup; Described read out instrument is indicator lamp or prompting icon.
Further preferably, described alarming device also comprises audible alarm unit, and described audible alarm system is connected with described control setup.
Wherein, described control setup is the electronic control unit of automobile, is provided with the blood oxygen saturation threshold value of pre-warning in described electronic control unit.
In the vehicle steering that the utility model embodiment provides, be provided with at least one hemoxometer in the hand grasp area of automobile steering wheel rim, this hemoxometer is connected with control setup, and control setup is connected with alarming device.Analyze known thus, when driver running car, chaufeur can hold the hand grasp area of automobile steering wheel rim, now be arranged in the hemoxometer of hand grasp area by detecting the content of chaufeur finger blood oxygen, obtain blood oxygen saturation numerical value in chaufeur body, and by this blood oxygen saturation data transfer to control setup, according to this blood oxygen saturation numerical value, control setup judges whether chaufeur is fatigue driving, when being judged as fatigue driving, control setup controls alarming device work, with remind chaufeur its be in fatigue driving state, thus chaufeur is taken appropriate measures, such as stop and have a rest, avoid absent minded, drive when judgment declines, to improve traffic safety.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model embodiment vehicle steering is described in detail.
The utility model embodiment provides a kind of vehicle steering, as depicted in figs. 1 and 2, comprises wheel rim 11, and be provided with at least one hemoxometer 12 at the hand grasp area A of wheel rim 11, hemoxometer 12 is connected with control setup (not shown); Control setup is also connected with alarming device (not shown); Wherein, blood oxygen saturation numerical value in the chaufeur body that control setup detects according to hemoxometer 12, when judging that chaufeur is fatigue driving, control setup controls described alarming device work.
In the vehicle steering that the utility model embodiment provides, be provided with at least one hemoxometer in the hand grasp area of automobile steering wheel rim, this hemoxometer is connected with control setup, and control setup is connected with alarming device.Analyze known thus, when driver running car, chaufeur can hold the hand grasp area of automobile steering wheel rim, now be arranged in the hemoxometer of hand grasp area by detecting the content of chaufeur finger blood oxygen, obtain blood oxygen saturation numerical value in chaufeur body, and by this blood oxygen saturation data transfer to control setup, according to this blood oxygen saturation numerical value, control setup judges whether chaufeur is fatigue driving, when being judged as fatigue driving, control setup controls alarming device work, with remind chaufeur its be in fatigue driving state, thus chaufeur is taken appropriate measures, such as stop and have a rest, avoid absent minded, drive when judgment declines, to improve traffic safety.
Need to illustrate, according to common practise medically, tired have substantial connection with the metabolism of energy and energy rich compound herein.Under normal circumstances, energy required for human body major organs is mainly produced through oxidizing reaction by materials such as protein, sugar, fat, if the energy stored by human body consumes very soon, has little time again to supplement, people will feel tired, and therefore tired generation is closely related with histanoxia.
According to above-mentioned principle, can be evaluated by measurement tissue oxygenation degree of saturation specific humidity and can maintain normal tissue oxygen content, thus judge whether human body is in fatigue state.
And the hand grasp area of above-mentioned automobile steering wheel rim comprises the whole surface of wheel rim 11.Wherein, in actual driving procedure, chaufeur is according to after self driving habit and/or long-duration driving, although correct gesture can not be kept to drive a car always, but in order to drive, it is convenient to control, chaufeur all to remain under correct gesture (by contrast usually, chaufeur two hands all do not remain on the situation under correct gesture, can ignore), therefore, when the preferred chaufeur of wheel rim hand grasp area in the utility model embodiment drives a car with correct gesture, the region that hand covers, namely at least comprise left hand and be held in nine, region between when ten, the right hand is held in three, region between when four.
In addition, vehicle steering as shown in Figure 1, also comprises the spoke 10 be provided with on wheel rim 11.
According to above-mentioned hand grasp area, concrete set-up mode can be, groove is provided with in wheel rim 11 back surfaces, the corresponding wheel rim 11 side central area of groove is arranged, the card of clock and watch is regarded as by vehicle steering, between when groove is located at eight, ten and/or two, four time between, thus the hemoxometer 12 ensureing to be positioned at groove can measure the blood oxygen saturation of chaufeur body.That is, when chaufeur hand is held on wheel rim 11 with correct gesture, hemoxometer 12 by measuring the oxygen content of blood in chaufeur finger, can obtain chaufeur human body blood oxygen saturation numerical value.Wherein, in fig. 2, hemoxometer 12 is sealed by cover plate 21 and fixes in a groove, can adopt to be adhesively fixed to be connected between cover plate 21 with wheel rim 11, other modes also can be adopted to be fixedly connected with, the modes such as such as buckle.
In fig. 2, to be that chaufeur is longer hold region in region set by hemoxometer 12, can certainly arrange this hemoxometer 12 in other position on wheel rim 11.
This wherein, hemoxometer 12 is generally the pulse oximeter including probe, when practical set, can be located at embedded for the probe of hemoxometer 12 in wheel rim 11, thus convenient detects.Particularly, the probe of hemoxometer 12 can comprise a dual wavelength light-emitting diode and a photodiode.When driver automobile traveling, this hemoxometer 12 starts to facilitate and carries out examinations to oxygen content in chaufeur body, by setup times parameter (chaufeur continues to drive the time easily producing fatigue), hemoxometer 12 can certainly be controlled and starts after chaufeur travels a period of time.
Dual wavelength LED operation also launches the original light of two kinds of wavelength, original light is fed through cover plate 32 and is irradiated on the finger of chaufeur, finger part original light, and can reflect, thus reflected light rays is absorbed by photodiode through cover plate 32 again.Thus, by the change to transmitted light absorptivity during the pulsation of measurement chaufeur fingerstick capillary, chaufeur human body blood oxygen saturation numerical value is obtained.
Preferably, the probe of hemoxometer 12 adopts dual wavelength light-emitting diode, thus can measure the absorptivity to different wave length light between chaufeur, to improve the accuracy of measurement.Certainly, also can be Single wavelength (light-emitting diode of multiple different Single wavelength can be established) or multi-wavelength (two or more) light-emitting diode.
From the process of above-mentioned measurement chaufeur human body blood oxygen saturation numerical value, need the light by receiving after the reflection of chaufeur finger, if therefore the probe of hemoxometer 12 is directly contacted with finger, the reasonableness (emission of light receives poor) measured cannot be ensured, thus by arranging groove and cover plate 21, can ensure to measure and normally carrying out.Now original light and reflected light rays all need to propagate in cover plate 21, and therefore in order to ensure that cover plate 21 can not have an impact to the propagation of light, such as stop, absorb light, cover plate 21 can be set to transparent plastic sheet, is preferably polycarbonate material etc.In actual manufacturing process, the structure of cover plate 21 conforms to the structure of groove, thus ensures the appearance design quality of wheel rim 11 entirety.
Take into full account the actual driving situation of chaufeur, as shown in Figure 1 to Figure 2, two structures, groove that size is identical can be set on wheel rim 11, and two grooves are symmetrical arranged in wheel rim 11 two side ends, between when making a groove correspondence eight, ten, another groove correspondence two, four time between, namely two grooves cover band of position when chaufeur holds bearing circle with correct gesture.As long as thus when chaufeur hand is correctly held on wheel rim, the measurement of blood oxygen saturation in chaufeur body can be completed.
Wherein, groove can be arc groove, and along wheel rim 11 circumferencial direction, the both sides of arc groove are high, middle low.Thus make the surface that cover plate 21 is relative with groove be convex surface, to reflected light rays, there is convergence effect, ensure the good reception of hemoxometer 12 pairs of light.
Equally, conveniently measure blood oxygen saturation numerical value in chaufeur body, can arrange four hemoxometers 12 in each recess, concrete number can be determined as required.Wherein, four hemoxometers 12, along wheel rim 11 circumferencial direction equidistant arrangement, point when holding wheel rim 11 with chaufeur side by side that direction is consistent, can ensure multi-faceted measurement, and it is convenient to measure.
Wherein, the control setup that vehicle steering comprises can be electronic control unit (the ElectronicControl Unit of automobile, ECU), be electrically connected with ECU by hemoxometer 12, thus blood oxygen saturation data transfer, to ECU, and to be judged by ECU in the chaufeur body that records of hemoxometer 12.Be specifically as follows, the blood oxygen saturation threshold value of pre-warning can be provided with at ECU, thus by blood oxygen saturation numerical value and threshold value in the chaufeur body of measurement are compared, when institute's measured value is greater than threshold value, then ECU is judged as driver tired driving, and warned by alarming device, remind chaufeur to take corresponding measure.
When being provided with four hemoxometers 12 in a groove, can in ECU to four that obtain survey blood oxygen saturation numerical value and be averaged, obtain an aviation value, thus compared by aviation value and threshold value, improve the accuracy measured.
When judging that chaufeur is fatigue driving by ECU, ECU, to alarming device pipage control signal, carries out warning operation.Wherein, alarming device can comprise the read out instrument be connected with ECU, such as indicator lamp or prompting icon, during for prompting icon, can directly using car running computer screen as read out instrument, thus ECU control read out instrument often bright or press certain frequency glimmer, remind chaufeur.Certainly, alarming device can also include audible alarm unit, and this audible alarm unit is connected with ECU, thus ECU is while control read out instrument, controls audible alarm unit and reports to the police, be specifically as follows ring etc. for several times.
When concrete judgement chaufeur is fatigue driving, warning process as shown in Figure 3, blood oxygen saturation numerical value in chaufeur body is detected by hemoxometer 12 (pulse oximeter 12), send ECU to and compare judgement with the predetermined threshold value in ECU, when institute's measured value is greater than threshold value, be judged as fatigue driving, thus control read out instrument work (indicator lamp is bright), audible alarm unit ring.
In description of the present utility model, it will be appreciated that, term " " center ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.
Term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In description of the present utility model, except as otherwise noted, the implication of " multiple " is two or more.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, particular case the concrete meaning of above-mentioned term in the utility model can be understood.
In the description of this specification sheets, specific features, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should described be as the criterion with the protection domain of claim.