CN105857173A - Safe driving auxiliary device for people with hearing impairments - Google Patents

Abstract

The invention discloses a safe driving auxiliary device for people with hearing impairments. The device comprises a control unit, a signal amplification unit and three sound sensor modules arranged on the left side, the right side and the rear of the outside of a vehicle. Signal output ends of the three sound sensor modules are connected with the signal input end of the signal amplification unit, the signal output end of the signal amplification unit is connected with the signal input end of the control unit, the signal output end of the control unit is connected with the signal input end of a position indicator light switch, and the signal output end of the position indicator light switch is connected with a left position indicator light, a right position indicator light and a rear position indicator light in a controlling way. The safe driving auxiliary device for people with hearing impairments can make up for the hearing impairments in the driving process of a driver with hearing impairments to a certain extent, and effectively improves the safety when people with hearing impairments drive the vehicle.

Description

One listens to barrier person's safe driving auxiliary device

Technical field

The present invention relates to automobile auxiliary security and drive electronic technology field, specifically one person's safe driving auxiliary device of listening to barrier.

Background technology

Daily on the run, sensory organ is supplied to the ratio of driver information: vision accounts for 80%, and audition accounts for 14%, and sense of touch accounts for 2%, and the sense of taste accounts for 2%, and olfactory sensation accounts for 2%.Although listening to barrier, person is insensitive to sound, but extremity perfect, and possess good vision and respond, and concentrating in startup procedure of vision and attention is particularly important.Can drive a car in China and become the dream of many persons that listens to barrier, which increase the market demand of automobile.The data announced according to China Disabled Federation show, at the end of 2010, China's people with disability's sum reaches 85,020,000 people, wherein hearing loss 20,540,000 people, and proportion is only second to physical disabilities 24,720,000 people, account for the 24.2% of people with disability's sum.Once it has been suggested that can the vehicle that the person that listen to barrier drives be reequiped, as long as strengthening rearview mirror and increasing person's vehicle special marker of listening to barrier before and after vehicle body on car plate, to remind fore-aft vehicle and traffic police, but the hearing defect hindering driver is listened to can not be ignored.At present, market also there is no a kind of safe driving auxiliary device aiming at the person driver that listens to barrier design.Person's acoustoopic rotary gasifying device of listening to barrier utilizes the eyeminded advantage of person of listening to barrier, the defect that the person that compensate for listening to barrier to a certain extent drives, and helps it to understand the situation of vehicle's surroundings at any time.This device can better ensure that safety when audition disabled drives vehicle, it is achieved the hope that the person that listens to barrier drives.

Summary of the invention

It is an object of the invention to provide one person's safe driving auxiliary device of listening to barrier, to realize avoiding hidden trouble of traffic and the purpose of vehicle accident brought because can not promptly and accurately grasp the audio mail of vehicle-periphery when the person that listens to barrier drives.

In order to achieve the above object, the technical solution adopted in the present invention includes:

One listens to barrier person's safe driving auxiliary device, it is characterized in that: include control unit, signal amplification unit and three are respectively disposed on the left of outside vehicle, right side and the sound transducer module at rear, the signal output part of three sound transducer modules is connected with the signal input part of signal amplification unit, the signal output part of signal amplification unit is connected with the signal input part of control unit, the signal output part of control unit is connected with the signal input part of temporald eixis lamp switch, the signal output part of temporald eixis lamp switch controls orientation on the left of connection, right lateral aspect and posterior aspect display lamp；The surrounding all directions acoustical signal detected in real time is converted to the signal of telecommunication and is transferred to signal amplification unit by described sound transducer module, is amplified all directions signal of telecommunication through signal amplification unit and is transferred to control unit；Described control unit calculates the same sound source intensity of sound value at diverse location respectively according to current acoustic information, wherein intensity of sound maximum and is judged compared with the threshold value set, if now the intensity of sound maximum of this position reaches to set threshold value, then trigger and be connected to the temporald eixis lamp of its outfan and be operated, thus open the display lamp of this Sounnd source direction.

Described one listens to barrier person's safe driving auxiliary device, it is characterised in that: orientation, described left side, right lateral aspect and posterior aspect display lamp are individually fixed near bridge operation platform.

The control method of a kind of tin of barrier person's safe driving auxiliary device, it is characterised in that specifically comprise the following steps that

(1) person that listens to barrier is when driving the normal vehicle operation being provided with person's safe driving auxiliary device of listening to barrier, and three sound transducers being positioned at vehicle left side, right side and rear detect surrounding sound in real time；Owing to sound wave makes the electret film in sound transducer vibrate, cause electric capacity to change, thus produce a corresponding small voltage changed therewith, send the signal of telecommunication a, b, c of being obtained three directions to signal amplification unit；

(2) signal of telecommunication is amplified as V by signal amplification unit_a、V_b、V_c, and it is transmitted to control unit；

(3) control unit utilizes formula according to the voltage swing collecting three directions left and right, rearCalculate intensity of sound B in corresponding direction in real time_a、B_b、B_c, judge whether current all directions intensity of sound reaches to set audio intensity threshold D simultaneously_B；When wherein the intensity of sound in certain direction reaches to set threshold value, then trigger temporald eixis signal controlled switch to start working, and according to temporald eixis lamp, right lateral aspect display lamp or posterior aspect display lamp on the left of the source unlatching of concrete intensity of sound maximum, the temporald eixis lamp being simultaneously positioned on bridge operation platform lights, and display lamp is opened after 3 seconds and is automatically switched off；Driving conditions persistently repeats said process.

The beneficial effects of the present invention is:

Pass through technique scheme, the sound transducer placed at vehicle left side, right side and rear can provide the collection of three direction sound source information left and right to vehicle, rear, carries out orientation and show after the formula of storage calculates in control unit in driver's cabin in the blinker on operating board.As when front vehicle carries out blowing a whistle prompting, because this car sound source is different apart from the distance of 3 sound transducers of this car, therefore the intensity of sound collected also is not quite similar, the sound source intensity of sound at different directions can be obtained after the acoustic information collected from different directions being inputted control unit and calculating, choose and calculate the direction of gained intensity of sound maximum as Sounnd source direction, export to the temporald eixis lamp on operating board through control unit signal, thus for listening barrier driver to provide vehicle periphery transport information, avoid causing hidden trouble of traffic because not hearing the prompting of surrounding vehicles.

Accompanying drawing explanation

Fig. 1 is present system principle schematic.

Fig. 2 is to measure audio intensity threshold method schematic diagram.

Fig. 3 is principle of the invention flow chart.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.

As shown in Figure 1, one listens to barrier person's safe driving auxiliary device, including control unit 1, signal amplification unit 2, left side sound sensor assembly 3, right side sound sensor assembly 4, rear side sound sensor assembly 5, the temporald eixis signal controlled switch 6, left side temporald eixis lamp 7, right lateral aspect display lamp 8 and the posterior aspect display lamp 9 that open and close for control azimuth display lamp.Wherein 3 sound transducer modules are all connected with signal amplification unit 2 as input equipment；Signal amplification unit 2 transfers data to control unit 1；Temporald eixis signal controlled switch 6 is connected with control unit 1 as outut device；3 temporald eixis lamps are connected with temporald eixis signal controlled switch 6 and are controlled.

The computing formula of audio intensity threshold and principle: situation about blowing a whistle in the process of moving due to vehicle mostly is prompting surrounding vehicles or causes other vehicles to note, under the conditions of multiple being born in lane change, turning, turn around and remind front truck traveling etc. when red light turns green, thus send the vehicle of whistle signal be prompted separation between vehicles will not be the most remote.Therefore obtain vehicle through early stage many-side data acquisition to blow a whistle distance average L.The vehicle location driven using the person that listens to barrier is as the center of circle, and to blow a whistle, distance average L draws circle as radius, with reference to Fig. 2, owing to the region of the 180 ° of scopes in front is prone to observation for driver, so only testing sight line blind area, 180 ° of driver rear.Order is blown a whistle, and circumferentially and each movement sends whistle signal to vehicle equidistantly.If calculated i & lt in acquisition controlling unit (i=1,2 ..., n；N is as far as possible big) (l, r, maximum acoustic intensity received by sound transducer b) is maxd for three orientation when blowing a whistle_Bij, obtain following audio intensity threshold D_BComputing formula:

$D_B=\frac{\underset{i=1}{\overset{n}{\mathrm{\Σ}}}\underset{j=l,r,b}{{\mathrm{maxd}}_{Bij}}}{n}---\left(1\right)$

I i & lt is blown a whistle；

J different azimuth sound transducer, l is left side sound sensor, and r is right side sound sensor, and b is rear sound sound sensor；

d_BControl unit is calculated different azimuth intensity of sound when every time blowing a whistle；

Secondly, by existing decibel and voltage reduction formula, Voltage Reference unit V in lot of experiments determines formula_ref, all directions sound decibel size when utilizing equation below finally to obtain driving:

$B=20log\left(\frac{V}{V_{ref}}\right)---\left(2\right)$

Voltage after the amplification of V amplified circuit；

V_refVoltage Reference unit；

B sound decibel.

The specific implementation process of the embodiment of the present invention is as follows: the person that listens to barrier is when driving the normal vehicle operation being provided with person's safe driving auxiliary device of listening to barrier, being positioned at three sound transducers 3,4,5 detection surrounding sound in real time at vehicle left side, right side and rear and three signals of telecommunication are transferred to signal amplification unit 2, the received signal of telecommunication is amplified respectively sending control unit 1 to after 5V, 2V, 3V by signal amplification unit 2；Reference voltage V in lot of experiments determines formula (2)_ref=10^-4V, the intensity of sound that control unit 1 calculates corresponding direction in real time according to the amplification signal of telecommunication collecting three directions left and right, rear is respectively 94dB, 86dB, 89.5dB, it is judged that whether current all directions intensity of sound reaches to set audio intensity threshold 90dB.Now the intensity of sound of left direction reaches to set threshold value, then trigger temporald eixis signal controlled switch 6 and start working, and open left side temporald eixis lamp 7, and the left lamp of temporald eixis lamp being now placed on bridge operation platform lights, and display lamp is opened after 3 seconds and is automatically switched off.Driving conditions persistently repeats said process.

The one provided the embodiment of the present invention above listens to barrier, and person's safe driving auxiliary device is described in detail, principle and the embodiment of the present invention are set forth by specific case used herein, and the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention；Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, the most all will change, in sum, this specification content should not be construed as limitation of the present invention.

Claims (3)

1. person's safe driving auxiliary device of listening to barrier, it is characterised in that: include that control unit, signal amplify Unit and three are respectively disposed on the left of outside vehicle, right side and the sound transducer module at rear, three sound The signal output part of sensor assembly is connected with the signal input part of signal amplification unit, the letter of signal amplification unit Number outfan is connected with the signal input part of control unit, and the signal output part of control unit is opened with temporald eixis lamp The signal input part closed connects, and the signal output part of temporald eixis lamp switch controls orientation, right side side on the left of connection Position and posterior aspect display lamp.

One the most according to claim 1 listens to barrier person's safe driving auxiliary device, it is characterised in that: institute State orientation, left side, right lateral aspect and posterior aspect display lamp to be individually fixed near bridge operation platform.

3. a control method based on a kind of tin of barrier person's safe driving auxiliary device described in claim 1, It is characterized in that specifically comprising the following steps that

(1) person that listens to barrier is when driving the normal vehicle operation being provided with person's safe driving auxiliary device of listening to barrier, Three sound transducers being positioned at vehicle left side, right side and rear detect surrounding sound in real time；Due to sound wave Make the electret film in sound transducer vibrate, cause electric capacity to change, thus produce a correspondence therewith The small voltage of change, sends the signal of telecommunication a, b, c of being obtained three directions to signal amplification unit；

(2) signal of telecommunication is amplified as V by signal amplification unit_a、V_b、V_c, and be transmitted to control Unit；

(3) control unit utilizes formula according to the voltage swing collecting three directions left and right, rearCalculate intensity of sound B in corresponding direction in real time_a、B_b、B_c, judge current each side simultaneously Whether reach to set audio intensity threshold D to intensity of sound_B；

When the intensity of sound in wherein certain direction reaches to set threshold value, then trigger temporald eixis signal controlled switch and start working, And according to temporald eixis lamp, right lateral aspect display lamp or rear side on the left of the source unlatching of concrete intensity of sound maximum Temporald eixis lamp, after the temporald eixis lamp being simultaneously positioned on bridge operation platform lights, and display lamp is opened 3 seconds It is automatically switched off；Driving conditions persistently repeats said process.