CN101968916A - Intelligent device and method for monitoring driving without controlling steering wheel by hands - Google Patents

Abstract

The invention relates to intelligent device and method for monitoring driving without controlling a steering wheel by hands in the field of control technology in automobile engineering. The device is characterized in that an output interface of a preposed signal processor is connected with an analog signal input interface of a digital signal processor, an output interface of the digital signal processor is connected with a speed controlling mechanism, and a digital command input interface of a voice alarm in parallel; and a setting switch device is connected with the digital signal processor and the voice alarm. The method comprises the steps of: carrying out initialization on a system of the intelligent device for monitoring driving without controlling the steering wheel by hands; converting an received analog voltage signal at one time tau into a digital voltage signal V tau, and discriminating the digital voltage signal V tau; and determining whether to intervene in driving by sending voice alarms, decelerating or braking. The intelligent device and the intelligent method can protect drivers from accidents that vehicles deflect, rush out roads and collide in driving, and the like when the steering wheel is not under control by hands.

Description

The monitoring both hands break away from intelligent apparatus and the method that bearing circle is driven

Technical field

What the present invention relates to is the apparatus and method in the control technology field in a kind of automobile engineering, specifically is that a kind of both hands of monitoring break away from intelligent apparatus and the method that bearing circle is driven.

Background technology

Driving a car requires driver's both hands should hold bearing circle, allows the vehicle ' process that both hands are broken away from bearing circle anything but.This be because, vehicle ' process driver both hands break away from bearing circle, in case run into pavement roughness, even when dell or barrier occurring, take place with regard to making very much vehicle among vibrations, go out the track and serious traffic hazard such as other vehicle collision.When current pilotless automobile does not enter the practical epoch as yet, prevent that the intelligent prosecution technology that driver's both hands disengaging bearing circle is driven from obviously being the critical function that vehicle should dispose.

Find by prior art documents, (Chinese patent application number: 200610034879.7) disclose a kind of car steering security warning system, this system comprises central processing unit 1, data detection device 2, phonetic warning device 3 and output display device 4 to " a kind of car steering security warning system " of Luo Xiaonan, Yu Yanlin.Central processing unit 1, it is an independently computer system, comprise independently operating system 11, database 12, data processing software 13 and data-interface 14, handle judgement after the various Data Receiving that data pick-up unit 2 is transmitted, control phonetic warning device 3 or output display device 4 work according to the result then.This system can be according to the various information such as operation of motorist's various driver behaviors, road surface situation and automobile, traffic safety is judged, when detecting automobile and be in dangerous travelling, send the different stage safety warning to the motorist, remind motorist's safe driving, prevented the generation of peril.

But, above-mentioned disclosed technology mainly is " according to the various information such as operation of motorist's various driver behaviors, road surface situation and automobile; traffic safety is judged ", input and driving condition recognition function when not possessing motorist's both hands as yet and breaking away from bearing circle.

Summary of the invention

The objective of the invention is to overcome deficiency of the prior art, provide a kind of both hands of monitoring to break away from intelligent apparatus and the method that bearing circle is driven, the present invention can prevent that the motorist from driving the running out the way that causes because of both hands break away from bearing circle, even goes out the generation of traffic hazards such as track and other vehicle collision.

The present invention is achieved by the following technical solutions:

The present invention relates to monitor both hands and break away from the intelligent apparatus that bearing circle is driven, comprising: electromagnetic sensor, advance signal processor, digital signal processor, speed of a motor vehicle operating-controlling mechanism, voice prompting device, derailing switch is set.The output interface of electromagnetic sensor is connected with the input interface of advance signal processor, the output interface of advance signal processor is connected with the analog input interface of digital signal processor, and the output interface of digital signal processor is connected with the digital command input interface of speed of a motor vehicle operating-controlling mechanism, voice prompting device is parallel; First output interface that derailing switch is set is connected with the switching signal input interface of digital signal processor, and second output interface that derailing switch is set is connected with the switching signal input interface of voice prompting device.

Described electromagnetic sensor comprises: telefault, soft magnetic ferrite annulus, bearing circle shell, output interface.Telefault is connected mutually and is constituted by being wound on three groups of coils on the soft magnetic ferrite annulus, and promptly the head end of the tail end of first group of coil and second group of coil joins, the tail end of second group of coil and the head end of the 3rd group of coil join; The tail end of the head end of first group of coil in the telefault and the 3rd group of coil is the output port of telefault, and is connected with the input port of output interface; The soft magnetic ferrite annulus of coiling telefault is embedded in the bearing circle shell, and promptly the bearing circle shell contains the soft magnetic ferrite annulus inner core that telefault in a coiling; The bearing circle shell adopts synthetic plastic or wood materials to make.

Described advance signal processor comprises: advance signal input interface, LC oscillation module, high frequency amplifying module, amplitude limit module, detection module and advance signal output interface.The input port of advance signal input interface is connected with the output interface of electromagnetic sensor, the output port of advance signal input interface is connected with the input port of LC oscillation module, the output port of LC oscillation module is connected with the input port of high frequency amplifying module, the output port of high frequency amplifying module is connected with the input port of amplitude limit module, the output port of amplitude limit module is connected with the input port of detection module, and the output port of detection module is connected with the input port of advance signal output interface.

Described digital signal processor comprises: analog input interface, switching signal input interface, analog-to-digital conversion module, computing decision-making module, digital signal output interface.Wherein: the input end of analog input interface is connected with the advance signal output interface, the output terminal of analog input interface is connected with the input end of analog-to-digital conversion module, and the output port of analog-to-digital conversion module is connected with the digital signal input end mouth of computing decision-making module; The input port of computing decision-making module is connected with the input port of digital signal output interface; The output terminal of switching signal input interface is connected with the switching signal input port of computing decision-making module.

Described speed of a motor vehicle operating-controlling mechanism comprises: input interface, first digital to analog converter, power amplifier, solenoid valve and electric brake push rod.Wherein, input interface is connected with the input port of first digital to analog converter, the output port of first digital to analog converter is connected with the input port of power amplifier, the output port of power amplifier simultaneously with two end points of two end points of electromagnetic valve coil and electric brake push rod coil mutually and connect.

Described electromagnetic valve coil is enclosed within the outside of electromagnetic core, produce magnetic force by electromagnetic core when solenoid is subjected to electricity valve is produced magnetic attraction, along with the size variation that is added in solenoid two-end-point voltage signal, the magnetic attraction of electromagnetic core produces corresponding variation simultaneously, the magnetic attraction of electromagnetic core acts on valve, the pulling valve is to change the aperture of valve, resistance spring is a kind of extension spring, valve is in the pulling of electromagnetic core magnetic attraction, resistance spring is also stretched simultaneously, therefore produce an elastic force opposite with the electromagnetic core magnetic attraction, when electromagnetic core magnetic attraction and resistance spring elastic force reach balance, valve just is stopped pulling, and promptly valve opening is with to be added in solenoid two-end-point voltage corresponding.

Described electric brake push rod, comprise: electric brake coil and electromagnetism push rod, the electric brake mounting coil is at an end of electromagnetism push rod, the other end of electromagnetism push rod is connected with footbrake bar thick stick mechanism, when the electric brake coil is subjected to electricity, the electromagnetic field that the electric brake coil is produced produces axial mechanical thrust to the push rod that is sleeved in the electric brake coil, this axial mechanical thrust acts on the electric pushrod of footbrake bar thick stick mechanism and does on the force, plays with the same effect of footbrake making the vehicle self-actuating brake by bar thick stick mechanism.

The principle of work of described speed of a motor vehicle operating-controlling mechanism is: in the normal vehicle operation, solenoid valve is in full-gear, and promptly aperture is 100%; When identifying the current driver's both hands, apparatus of the present invention break away from bearing circle when driving, signal processor is to speed of a motor vehicle operating-controlling mechanism output steering order, electromagnetic valve coil is under the effect of input voltage signal, electromagnet produces corresponding magnetic force pulling valve and reduces its original aperture, therefore reduce flow fuel, forced vehicle deceleration; Simultaneously, electric brake push rod coil produces the transmission of torque of axial thrust by bar thick stick mechanism to push rod and drives foot brake and force vehicle to slow down gradually and finally stop also under the effect of this input voltage signal.

Described voice prompting device comprises: digital command input interface, switching signal input interface, code translator, digital voice module, second digital to analog converter, power amplifier module, loudspeaker; Wherein: the output terminal of digital command input interface is connected with the digital signal input end mouth of code translator, the output terminal of switching signal input interface is connected with the switching signal input port of code translator, the output port of code translator is connected with the input port of digital voice module, the output port of digital voice module is connected with the input port of second digital to analog converter, the output port of second digital to analog converter is connected with the input port of power amplifier module, and the output port of power amplifier module is connected with the input port of loudspeaker.After the switching signal input interface of voice prompting device receives " systematic learning " status switch signal from second output interface that derailing switch is set, link code translator and through its explanation, " study prompting " voice unit in the link digital voice module, voice unit sequence after the link is transported to second digital to analog converter successively be converted to " study prompting " voice analog signal, to " learn to point out " voice analog signal to transport to power amplifier module again and send " study prompting " through power amplification rear drive loudspeaker, interrupt the digital command input interface of voice prompting device and linking of signal processor output interface simultaneously, make signal processor be in " systematic learning " duty and the learning outcome characteristic is deposited in the stored unit; After the switching signal input interface of voice prompting device receives " on-line monitoring " status switch signal from second output interface that derailing switch is set, the signal that interruption is provided with derailing switch second output interface and voice prompting device switching signal input interface links, the signal of opening voice prompting device digital command input interface and signal processor output interface simultaneously links, after receiving steering order, explanation through code translator, related voice unit in the link digital voice module, voice unit sequence after the link is transported to second digital to analog converter successively be converted to voice analog signal, again voice analog signal is transported to power amplifier module and sent corresponding phonetic warning through power amplification rear drive loudspeaker.

The described derailing switch that is provided with, in set up departments system study and on-line monitoring two states:

When derailing switch being set placing " systematic learning " state, " systematic learning " status switch signal that derailing switch is set is after output of second output interface and the explanation of decoded device, " study prompting " voice unit in the digital voice module is linked, and the voice unit sequence after will linking transports to second digital to analog converter successively and is converted to " study prompting " voice analog signal, again will " study prompting " voice analog signal transports to power amplifier module and sends " study prompting " through power amplification rear drive loudspeaker; At this moment, digital signal processor is in the study and work state, and the characteristic of study operation result is deposited in digital signal processor, and digital signal processor is not to speed of a motor vehicle operating-controlling mechanism output interface output steering order;

When derailing switch being set placing " on-line monitoring " state, derailing switch is set interrupts linking of its second output interface and voice prompting device switching signal input interface, the signal of opening its first output interface and digital signal processor switching value signal input interface simultaneously links, and the signal that recovers voice prompting device digital command input interface and signal processor output interface links.

The present invention is in advance by behind the systematic learning, when both hands are not held bearing circle, system is in the resonance duty, be that oscillation circuit in the advance signal processor is in resonant condition, the high-frequency oscillation signal of this moment reaches the maximum level value of limiter after high frequency amplifies, digital signal processor starts the computing decision-making process under the situation that receives limiter maximum level value, and to speed of a motor vehicle operating-controlling mechanism and voice prompting device output steering order; Under the effect of steering order, force speed of a motor vehicle operating-controlling mechanism action, vehicle is slowed down so that brake, the while voice prompting device sends caution to the motorist: " please hold the driving bearing circle, drive with caution! ".When both hands or one hand are held bearing circle, electromagnetic inductor can make that all its telefault induction coefficient changes because of the electrostatic effect of human body palm, cause system to be in the disresonance duty, advance signal processor output low level, therefore digital signal processor can or not made any intervention to current normal driving naturally to speed of a motor vehicle operating-controlling mechanism and voice prompting device output steering order.

The invention still further relates to the monitoring both hands and break away from the intelligent method that bearing circle is driven, may further comprise the steps:

Step 1, systematic learning claim initialization again; Consider the vehicle environmental disturbing factor, before the vehicle commencement of commercial operation, must carry out initialization, i.e. system's " study " earlier apparatus of the present invention system.

Described systematic learning, specifically as follows step by step:

Signals collecting and processing when (1) both hands break away from bearing circle;

Voice prompting device is pointed out automatically: " please both hands are broken away from bearing circle, system needs study! ", require the driver that both hands are broken away from bearing circle.

Delay time behind the of short duration moment t, every interval of delta t, signal processor is gathered a signal by electromagnetic sensor and advance signal processor; The analog voltage signal that at every turn collects is deposited in first array location after analog to digital conversion; Gather M time, in M * Δ t, finish data acquisition, form first kind sampled voltage vector V ⁽¹⁾, promptly

$V^{\left(1\right)}=\left[\begin{array}{cccc}{V}_1^{\left(1\right)}& V_2^{\left(1\right)}& ...& V_M^{\left(1\right)}\end{array}\right]$ (formula one)

Signals collecting when (2) left hand is held bearing circle and processing;

Voice prompting device is pointed out automatically: " please left hand being held bearing circle ", behind the of short duration moment t that delays time, every interval of delta t, signal processor is gathered a signal by electromagnetic sensor and advance signal processor; The analog voltage signal that at every turn collects is deposited in second array location after analog to digital conversion; Gather M time, in M * Δ t, finish data acquisition, form second class sampled voltage vector V ⁽²⁾, promptly

$V^{\left(2\right)}=\left[\begin{array}{cccc}{V}_1^{\left(2\right)}& V_2^{\left(2\right)}& ...& V_M^{\left(2\right)}\end{array}\right]$ (formula two)

Signals collecting when (3) right hand is held bearing circle and processing;

Voice prompting device is pointed out automatically: " please the right hand being held bearing circle ", behind the of short duration moment t that delays time, every interval of delta t, signal processor is gathered a signal by electromagnetic sensor and advance signal processor; The analog voltage signal that at every turn collects is deposited in the 3rd array location after analog to digital conversion; Gather M time, in M * Δ t, finish data acquisition, form the 3rd class sampled voltage vector V ⁽³⁾, promptly

$V^{\left(3\right)}=\left[\begin{array}{cccc}{V}_1^{\left(3\right)}& V_2^{\left(3\right)}& ...& V_M^{\left(3\right)}\end{array}\right]$ (formula three)

(4) ask for first kind sampled voltage vector V ⁽¹⁾The mathematical mean of element

${\stackrel{\‾}{V}}^{\left(1\right)}=\frac{1}{M}\underset{i=1}{\overset{M}{\mathrm{\Σ}}}{V}_i^{\left(1\right)}$ (formula four)

(5) ask for second and third class sampled voltage vector V ⁽¹⁾With V ⁽²⁾The mathematical mean of element

${\stackrel{\‾}{V}}^{(2+3)}=\frac{\underset{i=1}{\overset{M}{\mathrm{\Σ}}}(V_i^{\left(2\right)}+V_i^{\left(3\right)})}{2M}$ (formula five)

(6) determine decision threshold δ ₁And δ ₂

${\mathrm{\δ}}_1=\max |V_i^{\left(1\right)}-{\stackrel{\‾}{V}}^{\left(1\right)}|$ (formula six)

${\mathrm{\δ}}_2=\max \left[\max \right|V_i^{\left(2\right)}-{\stackrel{\‾}{V}}^{(2+3)}|,\max |V_i^{\left(3\right)}-{\stackrel{\‾}{V}}^{(2+3)}\left|\right]$ (formula seven)

Wherein: i=1,2 ..., M.

Step 2, on-line monitoring, the analog voltage signal of a certain moment τ that system will receive is converted to digital voltage signal V _τ, to digital voltage signal V _τDifferentiate, determine whether current driver behavior is intervened; The vehicle ' process breaks away from bearing circle in case driver's both hands occur, and system sends phonetic warning to the driver immediately, simultaneously vehicle is slowed down or brakes.

Described on-line monitoring, specifically as follows step by step:

(1) live signal collection and pre-service;

Online real time collecting arrives at digital signal processor from the signal of electromagnetic sensor by the pre-service of advance signal processor; Digital signal processor is converted to digital voltage signal V to the analog voltage signal of a certain moment τ that receives _τ

(2) to digital voltage signal V _τDifferentiate;

When

The time, driver's normal driving is described, promptly both hands are held bearing circle and are carried out riding manipulation, and this is because the oscillation circuit of this moment, makes V away from tuning-points _τNumerical value less, promptly depart from

Due to far away, so this system can not intervene driver behavior;

When

And

Illustrate that driver's one hand holds bearing circle, apparatus system could be pointed out the driver: " please with the hands hold bearing circle! ", but can not control the speed of a motor vehicle;

When

And

Illustrating then that driver's both hands have broken away from holds bearing circle, and apparatus system sends caution by voice prompting device immediately: " please with the hands hold bearing circle, drive with caution! "; Vehicle is slowed down under the effect of DSP CONTROL instruction by speed of a motor vehicle operating-controlling mechanism simultaneously or brake.

Description of drawings

Fig. 1 is apparatus of the present invention system architecture synoptic diagram;

Fig. 2 is an electromagnetic sensor basic structure synoptic diagram of the present invention;

Fig. 3 is an advance signal processor electrical schematic diagram of the present invention;

Fig. 4 is a digital signal processor theory diagram of the present invention;

Fig. 5 is a speed of a motor vehicle operating-controlling mechanism structure principle chart of the present invention;

Fig. 6 is a voice prompting device theory diagram of the present invention.

Embodiment

Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.

Embodiment

As shown in Figure 1, present embodiment relates to the monitoring both hands and breaks away from the intelligent apparatus that bearing circle is driven, and comprising: electromagnetic sensor 1, advance signal processor 2, digital signal processor 3, speed of a motor vehicle operating-controlling mechanism 4, voice prompting device 5, switch are provided with device 6.The output interface of electromagnetic sensor 1 is connected with the input interface of advance signal processor 2, the output interface of advance signal processor 2 is connected with the analog input interface of digital signal processor 3, and the output interface of digital signal processor 3 is connected with the digital command input interface of speed of a motor vehicle operating-controlling mechanism 4, voice prompting device 5 is parallel; First output interface that derailing switch 6 is set is connected with the switching signal input interface of digital signal processor 3, and second output interface that derailing switch 6 is set is connected with the switching signal input interface of voice prompting device 5.

As shown in Figure 2, described electromagnetic sensor 1 comprises: telefault 11, soft magnetic ferrite annulus 12, bearing circle shell 13, output interface 14.Telefault 11 is connected mutually and is constituted by being wound on three groups of coils on the soft magnetic ferrite annulus 12, and promptly the head end of the tail end of first group of coil and second group of coil joins, the tail end of second group of coil and the head end of the 3rd group of coil join; The tail end of the head end of first group of coil in the telefault 11 and the 3rd group of coil is the output port of telefault, and is connected with the input port of output interface 14; The soft magnetic ferrite annulus 12 of coiling telefault 11 is embedded in the bearing circle shell 13, and promptly bearing circle shell 13 contains soft magnetic ferrite annulus 12 inner cores that telefault 11 in a coiling; Bearing circle shell 13 adopts synthetic plastic or wood materials to make.

As shown in Figure 3, described advance signal processor 2 comprises: advance signal input interface, LC oscillation module, high frequency amplifying module, amplitude limit module, detection module and advance signal output interface.The input port of advance signal input interface is connected with the output interface of electromagnetic sensor 1, the output port of advance signal input interface is connected with the input port of LC oscillation module, the output port of LC oscillation module is connected with the input port of high frequency amplifying module, the output port of high frequency amplifying module is connected with the input port of amplitude limit module, the output port of amplitude limit module is connected with the input port of detection module, and the output port of detection module is connected with the input port of advance signal output interface.Wherein, telefault 11 is the assembly of electromagnetic sensor 1, also is the inductor of LC oscillation module in the advance signal processor 2; T ₁Bear high-frequency signal when constituting oscillatory circuit and amplify R with the LC loop _f, C _fBe the positive feedback R-C coupling device in concussion loop, by to R _fFine setting, it is stable to guarantee to shake loop works; T ₂Can guarantee amplitude limit effect by correct quiescent point setting to high-frequency signal; The detection module is born by detector diode.

As shown in Figure 4, described signal processor 3 comprises: analog input interface 31, switching signal input interface 32, analog-to-digital conversion module 33, computing decision-making module 34, digital signal output interface 35.Wherein: the input end of analog input interface 31 is connected with the advance signal output interface, the output terminal of analog input interface 31 is connected with the input end of analog-to-digital conversion module 33, and the output port of analog-to-digital conversion module 33 is connected with the digital signal input end mouth of computing decision-making module 34; The input port of computing decision-making module 34 is connected with the input port of digital signal output interface 35; The output terminal of switching signal input interface 32 is connected with the switching signal input port of computing decision-making module 35.

As shown in Figure 5, speed of a motor vehicle operating-controlling mechanism 4 comprises: input interface 41, first digital to analog converter 42, power amplifier 43, solenoid valve 44 and electric brake push rod 45.Wherein, the input port of input interface 41 is connected with the output interface of digital signal processor 3, the output port of input interface 41 is connected with the input port of digital to analog converter 42, the output port of digital to analog converter 42 is connected with the input port of power amplifier 43, the output port of power amplifier 43 simultaneously with two end points of two end points of solenoid valve 44 coils and electric brake push rod 45 coils mutually and connect; Described solenoid valve 44 is by solenoid 46, electromagnetic core 47, valve 48,40 5 parts of resistance spring 49 and valve body are formed, solenoid 46 is enclosed within the outside of electromagnetic core 47, produce magnetic force by electromagnetic core 47 when solenoid 46 is subjected to electricity valve 48 is produced magnetic attraction, along with the size variation that is added in solenoid 46 two-end-point voltages, the magnetic attraction of electromagnetic core 47 produces corresponding variation simultaneously, the magnetic attraction of electromagnetic core 47 acts on valve 48, pulling valve 48 is to change the aperture of valve 48, resistance spring 49 is a kind of extension springs, valve 48 is in the pulling of electromagnetic core 47 magnetic attraction, resistance spring 49 is also stretched simultaneously, therefore produce one with the opposite elastic force of electromagnetic core 47 magnetic attraction, when electromagnetic core 47 magnetic attraction and resistance spring 49 elastic force reach balance, valve 48 just is stopped pulling, promptly stops at and be added in corresponding valve 48 apertures of solenoid 46 two-end-point voltages; Described electric brake push rod 45, comprise: electric brake coil and electromagnetism push rod, the electric brake mounting coil is at an end of electromagnetism push rod, the other end of electromagnetism push rod is connected with footbrake bar thick stick mechanism, when the electric brake coil is subjected to electricity, the electromagnetic field that the electric brake coil is produced produces axial mechanical thrust to the push rod that is sleeved in the electric brake coil, this axial mechanical thrust acts on the doing on the force of electric pushrod of footbrake bar thick stick mechanism, plays with the same effect of footbrake making the vehicle self-actuating brake by bar thick stick mechanism.

As shown in Figure 6, voice prompting device 5 comprises: digital command input interface 51, switching signal input interface 57, code translator 52, digital voice module 53, second digital to analog converter 54, power amplifier module 55, loudspeaker 56; Wherein: the output terminal of digital command input interface 51 is connected with the digital signal input end mouth of code translator 52, the output terminal of switching signal input interface 57 is connected with the switching signal input port of code translator 52, the output port of code translator 52 is connected with the input port of digital voice module 53, the output port of digital voice module 53 is connected with the input port of second digital to analog converter 54, the output port of second digital to analog converter 54 is connected with the input port of power amplifier module 55, and the output port of power amplifier module 55 is connected with the input port of loudspeaker 56.After the switching signal input interface 57 of voice prompting device 5 receives " systematic learning " status switch signal from second output interface that derailing switch 6 is set, link code translator 52 and through its explanation, " study prompting " voice unit in the link digital voice module 53, voice unit sequence after the link is transported to second digital to analog converter 54 successively be converted to " study prompting " voice analog signal, to " learn to point out " voice analog signal to transport to power amplifier module 55 again and send " study prompting " through power amplification rear drive loudspeaker 56, the digital command input interface 51 that interrupts voice prompting device simultaneously links with the signal of digital signal processor 3 output interfaces, makes digital signal processor 3 be in " systematic learning " duty and the learning outcome characteristic is deposited in the stored unit; After the switching signal input interface 57 of voice prompting device 5 receives " on-line monitoring " status switch signal from second output interface that derailing switch 6 is set, the signal that interruption is provided with derailing switch 6 second output interfaces and voice prompting device 5 switching signal input interfaces 57 links, the signal of opening voice prompting device 5 digital command input interfaces 51 and digital signal processor 3 output interfaces simultaneously links, after receiving steering order, explanation through code translator 52, related voice unit in the link digital voice module 53, voice unit sequence after the link is transported to second digital to analog converter 54 successively be converted to voice analog signal, again voice analog signal is transported to power amplifier module 55 and sent corresponding phonetic warning through power amplification rear drive loudspeaker 56.

Present embodiment is in advance by behind the systematic learning, when both hands are not held bearing circle, system is in the resonance duty, be that oscillation circuit in the advance signal processor 2 is in resonant condition, the high-frequency oscillation signal of this moment reaches the maximum level value of limiter after high frequency amplifies, digital signal processor 3 starts the computing decision-making process under the situation that receives limiter maximum level value, and to speed of a motor vehicle operating-controlling mechanism 4 and voice prompting device 5 output steering orders; Under the effect of steering order, force speed of a motor vehicle operating-controlling mechanism 4 action, vehicle is slowed down so that brake, voice prompting device 5 sends caution to the motorist simultaneously: " please hold the driving bearing circle ".When both hands or one hand are held bearing circle, electromagnetic inductor 1 can make that all its telefault induction coefficient changes because of the electrostatic effect of human body palm, cause system to be in the disresonance duty, advance signal processor 2 output low levels, therefore digital signal processor 3 can or not made any intervention to current normal driving naturally to speed of a motor vehicle operating-controlling mechanism 4 and voice prompting device 5 output steering orders.

Present embodiment also relates to the monitoring both hands and breaks away from the intelligent method that bearing circle is driven, and may further comprise the steps:

Step 1, systematic learning are considered the vehicle environmental disturbing factor, before the vehicle commencement of commercial operation, carry out initialization earlier, and be specifically as follows step by step:

Signals collecting and processing when (1) both hands break away from bearing circle;

Voice prompting device is pointed out automatically: " please both hands are broken away from bearing circle, system needs study! ", require the driver that both hands are broken away from bearing circle.

After getting time-delay moment t=2s, every interval of delta t=10ms, digital signal processor 2 is gathered a signal by electromagnetic sensor 1 and advance signal processor 2; The analog voltage signal that at every turn collects is deposited in first array location after analog to digital conversion; Gather M=10 time, in M * Δ t=100ms, finish data acquisition, form first kind sampled voltage vector

Signals collecting when (2) left hand is held bearing circle and processing;

Voice prompting device is pointed out automatically: " please left hand being held bearing circle ", get time-delay constantly behind the t=2s, every interval of delta t=10ms, digital signal processor 3 is gathered a signal by electromagnetic sensor 1 and advance signal processor 2; The analog voltage signal that at every turn collects is deposited in second array location after analog to digital conversion; Gather M=10 time, in M * Δ t=100ms, finish data acquisition, form the second class sampled voltage vector

Signals collecting when (3) right hand is held bearing circle and processing;

Voice prompting device is pointed out automatically: " please the right hand being held bearing circle ", behind the time-delay moment t=2s, every interval of delta t=10ms, digital signal processor is gathered a signal by electromagnetic sensor 1 and advance signal processor 2; The analog voltage signal that at every turn collects is deposited in the 3rd array location after analog to digital conversion; Gather M=10 time, in M * Δ t=100ms, finish data acquisition, form the 3rd class sampled voltage vector

(4) ask for first kind sampled voltage vector V ⁽¹⁾The mathematical mean of element

(5) ask for second and third class sampled voltage vector V ⁽¹⁾With V ⁽²⁾The mathematical mean of element

(6) determine decision threshold δ ₁And δ ₂, wherein,

${\mathrm{\δ}}_2=\max \left[\max \right|V_i^{\left(2\right)}-{\stackrel{\‾}{V}}^{(2+3)}|,\max |V_i^{\left(3\right)}-{\stackrel{\‾}{V}}^{(2+3)}\left|\right];$ i＝1，2，...，M。

Step 2, on-line monitoring, the analog voltage signal of a certain moment τ that system will receive is converted to digital voltage signal V _τ, to digital voltage signal V _τDifferentiate, determine whether current driver behavior is intervened; The vehicle ' process breaks away from bearing circle in case driver's both hands occur, and system sends phonetic warning to the driver immediately, simultaneously vehicle is slowed down or brakes.

Described on-line monitoring comprises as follows step by step:

(1) live signal collection and pre-service;

Online real time collecting arrives at digital signal processor 3 from the signal of electromagnetic sensor 1 by the pre-service of advance signal processor 2; The analog voltage signal of a certain moment τ that digital signal processor 3 will receive is converted to digital voltage signal V _τ

(2) to digital voltage signal V _τDifferentiate;

When

The time, judge driver's normal driving, system can not intervene driver behavior;

When

And

Judgement driver one hand is held bearing circle, and apparatus system can be pointed out the driver: " please with the hands hold bearing circle! ", but can not control the speed of a motor vehicle;

When

And Judgement driver both hands have broken away from holds bearing circle, and apparatus system sends caution by voice prompting device immediately: " please with the hands hold bearing circle, drive with caution! "; Vehicle is slowed down under the effect of DSP CONTROL instruction by speed of a motor vehicle operating-controlling mechanism simultaneously or brake.

Implementation result shows: in the vehicle ' process, system reaches 100% to the judging nicety rate that driver's both hands break away from bearing circle, therefore can prevent effectively that driver's both hands break away from bearing circle and cause the generation of phenomenon to lose control of one's vehicle, and the traffic hazard that may occur is stopped effectively.

Claims (9)

1. monitor the intelligent apparatus that both hands disengaging bearing circle is driven for one kind, it is characterized in that, comprise: electromagnetic sensor, advance signal processor, digital signal processor, speed of a motor vehicle operating-controlling mechanism, voice prompting device, derailing switch is set, the output interface of electromagnetic sensor is connected with the input interface of advance signal processor, the output interface of advance signal processor is connected with the analog input interface of digital signal processor, and the output interface of digital signal processor is connected with the digital command input interface of speed of a motor vehicle operating-controlling mechanism, voice prompting device is parallel; First output interface that derailing switch is set is connected with the switching signal input interface of digital signal processor, and second output interface that derailing switch is set is connected with the switching signal input interface of voice prompting device.

2. monitoring both hands according to claim 1 break away from the intelligent apparatus that bearing circle is driven, it is characterized in that, described electromagnetic sensor, comprise: telefault, soft magnetic ferrite annulus, bearing circle shell, output interface, be wound on three groups of telefaults that coil is in series mutually on the soft magnetic ferrite annulus, promptly the head end of the tail end of first group of coil and second group of coil joins, the tail end of second group of coil and the head end of the 3rd group of coil join; The tail end of the head end of first group of coil in the telefault and the 3rd group of coil is the output port of telefault, and is connected with the input port of output interface; The soft magnetic ferrite annulus of coiling telefault is embedded in the bearing circle shell.

3. monitoring both hands according to claim 1 break away from the intelligent apparatus that bearing circle is driven, it is characterized in that, described advance signal processor, comprise: the advance signal input interface, the LC oscillation module, high frequency amplifying module, the amplitude limit module, detection module and advance signal output interface, the input port of advance signal input interface is connected with the output interface of electromagnetic sensor, the output port of advance signal input interface is connected with the input port of LC oscillation module, the output port of LC oscillation module is connected with the input port of high frequency amplifying module, the output port of high frequency amplifying module is connected with the input port of amplitude limit module, the output port of amplitude limit module is connected with the input port of detection module, and the output port of detection module is connected with the input port of advance signal output interface.

4. monitoring both hands according to claim 1 break away from the intelligent apparatus that bearing circle is driven, it is characterized in that, described digital signal processor, comprise: analog input interface, switching signal input interface, analog-to-digital conversion module, computing decision-making module, digital signal output interface, wherein: the input end of analog input interface is connected with the advance signal output interface, the output terminal of analog input interface is connected with the input end of analog-to-digital conversion module, and the output port of analog-to-digital conversion module is connected with the digital signal input end mouth of computing decision-making module; The input port of computing decision-making module is connected with the input port of digital signal output interface; The output terminal of switching signal input interface is connected with the switching signal input port of computing decision-making module.

5. monitoring both hands according to claim 1 break away from the intelligent apparatus that bearing circle is driven, it is characterized in that, described speed of a motor vehicle operating-controlling mechanism, comprise: input interface, first digital to analog converter, power amplifier, solenoid valve and electric brake push rod, wherein, input interface is connected with the input port of first digital to analog converter, the output port of first digital to analog converter is connected with the input port of power amplifier, the output port of power amplifier simultaneously with two end points of two end points of electromagnetic valve coil and electric brake push rod coil mutually and connect.

6. monitoring both hands according to claim 1 break away from the intelligent apparatus that bearing circle is driven, it is characterized in that, the described derailing switch that is provided with, in set up departments system study and on-line monitoring two states:

When derailing switch being set placing " systematic learning " state, " systematic learning " status switch signal that derailing switch is set is after output of second output interface and the explanation of decoded device, " study prompting " voice unit in the digital voice module is linked, and the voice unit sequence after will linking transports to second digital to analog converter successively and is converted to " study prompting " voice analog signal, again will " study prompting " voice analog signal transports to power amplifier module and sends " study prompting " through power amplification rear drive loudspeaker; At this moment, digital signal processor is in the study and work state, and the characteristic of study operation result is deposited in digital signal processor, and digital signal processor is not to speed of a motor vehicle operating-controlling mechanism output interface output steering order;

When derailing switch being set placing " on-line monitoring " state, derailing switch is set interrupts linking of its second output interface and voice prompting device switching signal input interface, the signal of opening its first output interface and digital signal processor switching value signal input interface simultaneously links, and the signal that recovers voice prompting device digital command input interface and signal processor output interface links.

7. monitor the intelligent method that both hands disengaging bearing circle is driven for one kind, it is characterized in that, may further comprise the steps:

Step 1, systematic learning claim initialization again; Consider the vehicle environmental disturbing factor, before the vehicle commencement of commercial operation, carry out initialization earlier, i.e. system's " study ";

The analog voltage signal of a certain moment τ that step 2, on-line monitoring, system docking are received is converted to digital voltage signal V _τ, to digital voltage signal V _τDifferentiate; Whether decision is intervened driver behavior; By sending phonetic warning, simultaneously vehicle is slowed down or brake.

8. monitoring both hands according to claim 7 break away from the intelligent method that bearing circle is driven, and it is characterized in that the systematic learning described in the step 1 comprises as follows step by step:

Signals collecting and processing when (1) both hands break away from bearing circle, voice prompting device is pointed out automatically, requires the driver that both hands are broken away from bearing circle and supplies systematic learning:

Delay time behind the of short duration moment t, every interval of delta t, signal processor is gathered a signal by electromagnetic sensor and advance signal processor; The analog voltage signal that at every turn collects is deposited in first array location after analog to digital conversion; Gather M time, in M * Δ t, finish data acquisition, form first kind sampled voltage vector

Signals collecting when (2) left hand is held bearing circle and processing, voice prompting device is pointed out automatically, requires the driver that left hand is held bearing circle:

Delay time behind the of short duration moment t, every interval of delta t, signal processor is gathered a signal by electromagnetic sensor and advance signal processor; The analog voltage signal that at every turn collects is deposited in second array location after analog to digital conversion; Gather M time, in M * Δ t, finish data acquisition, form the second class sampled voltage vector

Signals collecting when (3) right hand is held bearing circle and processing, voice prompting device is pointed out automatically, requires the driver that the right hand is held bearing circle:

Delay time behind the of short duration moment t, every interval of delta t, signal processor is gathered a signal by electromagnetic sensor and advance signal processor; The analog voltage signal that at every turn collects is deposited in the 3rd array location after analog to digital conversion; Gather M time, in M * Δ t, finish data acquisition, form the 3rd class sampled voltage vector

(4) ask for first kind sampled voltage vector V ⁽¹⁾The mathematical mean of element

(5) ask for second and third class sampled voltage vector V ⁽¹⁾With V ⁽²⁾The mathematical mean of element

(6) determine decision threshold δ ₁And δ ₂, wherein,

${\mathrm{\δ}}_2=\max \left[\max \right|V_i^{\left(2\right)}-{\stackrel{\‾}{V}}^{(2+3)}|,\max |V_i^{\left(3\right)}-{\stackrel{\‾}{V}}^{(2+3)}\left|\right];i=\mathrm{1,2},...,M.$

9. monitoring both hands according to claim 7 break away from the intelligent method that bearing circle is driven, and it is characterized in that the on-line monitoring described in the step 2 comprises as follows step by step:

(1) analog voltage signal of a certain moment τ that online real time collecting signal and pre-service thereof, signal processor will receive is converted to digital voltage signal V _τ

(2) to digital voltage signal V _τDifferentiate:

When

The time, judge driver's normal driving;

When

And

Judgement driver one hand is held bearing circle, sends prompting, requires the driver please with the hands to hold bearing circle;

When

And

Judge that driver's both hands have broken away from and holds bearing circle, send caution, require the driver with the hands to hold bearing circle, vehicle is slowed down under the effect of DSP CONTROL instruction by speed of a motor vehicle operating-controlling mechanism simultaneously or brake.

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