CN102390322A - Mobile terminal with auto safety warning function - Google Patents
Mobile terminal with auto safety warning function Download PDFInfo
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- CN102390322A CN102390322A CN2011103217878A CN201110321787A CN102390322A CN 102390322 A CN102390322 A CN 102390322A CN 2011103217878 A CN2011103217878 A CN 2011103217878A CN 201110321787 A CN201110321787 A CN 201110321787A CN 102390322 A CN102390322 A CN 102390322A
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Abstract
The invention provides a mobile terminal with an auto safety warning function, which comprises a signal receiving unit, a signal processing unit and a safety warning unit, wherein the signal receiving unit is used for establishing a communication connection with a detection sensor loaded on an automobile, and receiving a detection signal sent by the detection sensor; the signal processing unit is connected with the signal receiving unit, and used for obtaining a distance between the automobile in which the detection sensor is arranged and another automobile according to the detection signal received by the signal receiving unit, and sending a warning control instruction to the safety warning unit when the distance is less than a preset safe distance; and the safety warning unit is connected with the signal processing unit, and used for carrying out safety warning on the automobile according to the warning control instruction sent by the signal processing unit. In the invention, because an operation of safety warning is performed by using the mobile terminal, an automatic brake apparatus is not required to be arranged on an automobile, thereby greatly reducing the cost of the automobile; and the mobile terminal is wide in application range.
Description
Technical field
The present invention relates to the portable terminal technology, particularly a kind of portable terminal with automotive safety alarm function.
Background technology
Along with Chinese economic development, the building up of high-grade highway, automobile quantity also is being doubled and redoubled, and car speed is also more and more faster, causes crowded traffic and high speed traveling, and car accident also takes place again and again, and traffic safety problem is outstanding day by day.In order to guarantee safe driving, China requires automobile to have the function of when danger is driven a vehicle, carrying out safety control gradually, to reduce traffic accident.For example; In the prior art, dead-man's device has been installed on the automobile, whether the spacing that this dead-man's device can be judged automobile safety; And when spacing is not safe distance between vehicles; Brake system that can the automatic guidance automobile is braked, thereby has well realized the function of automobile automatic brake, has significantly reduced the rear-end collision accident.
But it is that the cost of this dead-man's device is too expensive, does not meet customer's consumption demand, if be loaded in the competitive power that will influence automobile on the automobile that the existing technological deficiency of dead-man's device is installed on the above-mentioned automobile; In addition, automobile has only have been installed this dead-man's device and can have said self-actuating brake function, if do not install this dead-man's device then automobile do not have said self-actuating brake function, application limitation is high.
Summary of the invention
The present invention provides a kind of portable terminal with automotive safety alarm function, realizes automobile is carried out security warning, not only guaranteed the traffic safety of automobile, and this mobile terminal cost is low, applied range.
The present invention provides a kind of portable terminal with automotive safety alarm function, comprising: signal receiving unit, signal processing unit and security warning unit;
Said signal receiving unit is used for establishing a communications link with the acquisition sensor that is loaded on the automobile, and receives the detectable signal that said acquisition sensor sends;
Said signal processing unit; Be connected with said signal receiving unit; Be used for obtaining the automobile at said acquisition sensor place and the spacing between other automobiles according to the detectable signal that said signal receiving unit receives; And during less than preset safe distance between vehicles, send the caution control command to said security warning unit at said spacing;
Said security warning unit is connected with said signal processing unit, is used for the caution control command sent according to said signal processing unit, and automobile is carried out security warning.
Portable terminal with automotive safety alarm function of the present invention; Through utilizing portable terminal the acquisition sensor institute signals detected that is loaded on the automobile is analyzed; Can judge whether traffic safety of automobile; And when running is dangerous, automatically chaufeur is sent caution, take safety measures such as brake to remind chaufeur; In this scheme, owing to be to utilize portable terminal to carry out security warning, thereby dead-man's device need be installed on automobile, can still adopt original brake system on the automobile, both guaranteed traffic safety, greatly reduce auto cost again; And as long as have acquisition sensor on the automobile, portable terminal just can establish a communications link with this acquisition sensor; Carry out above-mentioned automotive safety caution; Promptly this portable terminal can all be suitable at the automobile that acquisition sensor is installed, rather than only is suitable at a car, and field of application is wider.
Description of drawings
Fig. 1 has the structural representation one of the portable terminal embodiment of automotive safety alarm function for the present invention;
Fig. 2 has the application scheme drawing of the portable terminal embodiment of automotive safety alarm function for the present invention;
Fig. 3 has the structural representation two of the portable terminal embodiment of automotive safety alarm function for the present invention;
The modulating pulse that Fig. 4 has for the present invention among the portable terminal embodiment of automotive safety alarm function produces schematic flow sheet;
Fig. 5 has the modulating pulse structural representation among the portable terminal embodiment of automotive safety alarm function for the present invention;
Fig. 6 has the signal conditioning external interrupt program circuit scheme drawing among the portable terminal embodiment of automotive safety alarm function for the present invention;
The signal conditioning timer that Fig. 7 has for the present invention among the portable terminal embodiment of automotive safety alarm function overflows the interrupt routine schematic flow sheet;
Fig. 8 has the signal conditioning main program flow scheme drawing among the portable terminal embodiment of automotive safety alarm function for the present invention.
Description of reference numerals:
The 11-signal receiving unit; The 12-signal processing unit; 13-security warning unit;
14-start-up control unit; The 21-oscillator; 22-amplifies isolator;
11-light-receiving subelement; 112-sound reception subelement; The 121-computation subunit;
The 122-storing sub-units; 123-is subelement relatively.
The specific embodiment
Main technical schemes of the present invention is; Portable terminal and the acquisition sensor that is loaded on the automobile are integrated; Through utilizing portable terminal the acquisition sensor institute signals detected that is loaded on the automobile is analyzed; Can judge whether traffic safety of automobile, and when running is dangerous, automatically chaufeur sent caution, take safety measures such as brake to remind chaufeur.
Through accompanying drawing and specific embodiment, technical scheme of the present invention is done further detailed description below.
Fig. 1 has the structural representation one of the portable terminal embodiment of automotive safety alarm function for the present invention; Be to be that collision avoidance radar is that example describes with the acquisition sensor in the present embodiment; But in the practical implementation; Not necessarily adopting collision avoidance radar, can be radar or other sensors, as long as sensitivity meets the requirements just passable.As shown in Figure 1, the portable terminal of present embodiment comprises signal receiving unit 11, signal processing unit 12, security warning unit 13.
Wherein, signal receiving unit 11 is used for establishing a communications link with the collision avoidance radar that is loaded on the automobile, and receives the detectable signal that said collision avoidance radar sends.Signal processing unit 12; Be connected with signal receiving unit 11; Be used for obtaining the automobile at said collision avoidance radar place and the spacing between other automobiles according to the detectable signal that signal receiving unit 11 receives; And during less than preset safe distance between vehicles, send the caution control commands to security warning unit 13 at said spacing.Security warning unit 13 is connected with signal processing unit 12, is used for the caution control command sent according to signal processing unit 12, and automobile is carried out security warning.
Owing to be to utilize portable terminal to carry out security warning, thereby dead-man's device need be installed on automobile, can still adopt original brake system on the automobile, both guaranteed traffic safety, greatly reduce auto cost again; And as long as have the radar of surveying usefulness on the automobile, portable terminal just can establish a communications link with this radar; Carry out above-mentioned automotive safety caution; Promptly this portable terminal can all be suitable at the automobile that radar is installed, rather than only is suitable at a car, and field of application is wider.
Fig. 2 is for the present invention has the application scheme drawing of the portable terminal embodiment of automotive safety alarm function, wherein show portable terminal when using with automobile on collision avoidance radar between the annexation of communicating by letter; Fig. 3 has the structural representation two of the portable terminal embodiment of automotive safety alarm function for the present invention.Below in conjunction with Fig. 2 and Fig. 3 the concrete structure and the principle of the portable terminal of present embodiment are elaborated; Wherein, the collision avoidance radar of present embodiment can be secondary radar, and its signal source can be super sonic and infrared ray.
Wherein, in order to make that to utilize portable terminal to carry out the automotive safety caution convenient, present embodiment can utilize portable terminal to the startup of collision avoidance radar or close and control; Start-up control unit 14 is set in this portable terminal, and this start-up control unit 14 is used for establishing a communications link with the collision avoidance radar that is loaded on the automobile, and sends startup or out code to said collision avoidance radar.For example, when automobile driver wants to adopt the described safety alarm method of present embodiment, then send enabled instruction to collision avoidance radar, begin to carry out follow-up described security warning step through portable terminal; When automobile driver is not wanted to adopt the described safety alarm method of present embodiment, then send out code to collision avoidance radar through portable terminal, still adopt the mode of manual observation and control to get final product, very convenient.
Concrete; Start-up control unit 14 can adopt the mode that is described below to control: this start-up control unit 14 can produce modulating pulse; And said modulating pulse is sent to collision avoidance radar, so that said collision avoidance radar adopts said modulating pulse that infra-red detection signal, ultrasonic fault detection signal are modulated the back emission.Collision avoidance radar then begins to start when receiving the modulating pulse of sending start-up control unit 14, and adopts modulating pulse to carry out the signal modulation; If do not receive the modulating pulse that start-up control unit 14 sends, then showing does not need to start, and collision avoidance radar is not then closed and can be worked.
For example; As shown in Figure 2; Start-up control unit 14 can be positioned at the treater of portable terminal; The modulating pulse that light modulation is used can be exported from the P1.2 mouth of this mobile terminal processor in start-up control unit 14 after generating modulating pulse, collision avoidance radar can adopt this modulating pulse to carry out the infrared signal modulation; Can export the modulating pulse that tone system is used from the P1.3 mouth of this mobile terminal processor, collision avoidance radar can adopt this modulating pulse to carry out the ultrasonic signal modulation.
The modulating pulse that Fig. 4 has for the present invention among the portable terminal embodiment of automotive safety alarm function produces schematic flow sheet, and what this was shown in Figure 4 is the modulation system signal for pulse.Modulation is handled the information of signal source exactly, makes it become the process of the form that is suitable for Channel Transmission.In general; The information of signal source contains DC component and the lower frequency component of frequency; Be called baseband signal, baseband signal often can not be as transmission signals, therefore must change baseband signal into relative baseband frequency frequency very high signal to be suitable for Channel Transmission; This signal is called modulated signal, and baseband signal is called modulation signal.Specifically being to adopt mobile terminal processor to produce above-mentioned modulating pulse, is through treater is designed, and exports with the P1.3 mouth from P1.2 respectively after utilizing the interrupt routine of timer 0 to produce; What in register R2, deposit is the data relevant with the pulse sequence number.Because the crystal oscillator in the SCM system is 6MHz; A machine cycle is 2us, produce the pulse that pulsewidth is 10ms, and timer must be sent into one 5000 initial value; In like manner will produce the pulse that pulse is 4ms and 16ms, timer will be sent into one 2000 and 1 initial value.
Further, in order to make collision avoidance radar more stable to the modulation of signal, modulation effect is better, also is provided with oscillator 21 in the portable terminal of present embodiment and amplifies isolator 22, amplifies isolator 22 and communicates by letter with collision avoidance radar with oscillator 21 respectively and be connected.The effect of amplifying isolator 22 is to utilize the electronic circuit with enlarging function, and isolation, amplification, conversion and filtering with faint signal processing and amplifying such as curtage, convert needed value to, and, can the filtering radio-frequency interference.
Collision avoidance radar will utilize this modulating pulse to carry out the signal modulation after the modulating pulse that receives the portable terminal transmission, and ultrasonic fault detection signal and infra-red detection signal after the emission modulation.Every radar includes radiating portion and receiving unit, and radiating portion is used to send described detectable signal, and this detectable signal can be received part again and receive.For example, all be mounted with collision avoidance radar on first car and the second car, the detectable signal that the radiating portion of first car collision avoidance radar sends, the collision avoidance radar acceptance division branch that after touching the second car, can return passive armor car self receives; Perhaps, detectable signal is promptly received by the receiving unit of second car collision avoidance radar after touching the second car.After receiving unit receives the detectable signal that returns, can this detectable signal be sent to the signal receiving unit 11 of portable terminal; If detectable signal passive armor car receives, and the portable terminal of present embodiment is arranged in the first car, then this portable terminal can carry out security warning to the chaufeur of first car; If detectable signal is received by the second car, and the portable terminal of present embodiment is arranged in the second car, then this portable terminal can carry out security warning to the chaufeur of second car.
The receiving unit of collision avoidance radar is before being sent to portable terminal with the detectable signal that receives; Can carry out preoperative treatment to this detectable signal, for example, carry out processing such as photoelectricity amplifies, sound detection; And then be delivered to portable terminal, so that portable terminal is more accurate to the reception and the processing of signal.For example, can be tone system pulse from the ultrasonic fault detection signal that receives through the sound detection from P1.3 mouth (INT1) of mobile terminal processor, the infra-red detection signal that receives through the photoelectricity amplification from the P1.2 mouth (INT0) of mobile terminal processor is the light modulation pulse.Described INT1 is equivalent to the sound reception subelement 112 in the signal receiving unit 11 of this portable terminal, and INT0 is equivalent to the light-receiving subelement 111 in the signal receiving unit 11 of this portable terminal.Accordingly, signal processing unit specifically is used for said infra-red detection signal, ultrasonic fault detection signal are analyzed, and judges whether traffic safety of automobile.
Wherein, the signal processing unit 12 of this portable terminal also is arranged in mobile terminal processor, and it can comprise computation subunit 121, storing sub-units 122 and compare subelement 123.Described computation subunit 121 is used for according to said infra-red detection signal, ultrasonic fault detection signal, utilizes acousto-optic combination range measurement principle, obtains the automobile at said collision avoidance radar place and the spacing between other automobiles; Storing sub-units 122 is used to store predefined safe distance between vehicles; Compare subelement 123; Be connected with storing sub-units 122 with computation subunit 121 respectively; Be used for the spacing of computation subunit 121 acquisitions and the safe distance between vehicles of storing sub-units 122 are compared; And during less than said safe distance between vehicles, send the caution control command to said security warning unit at said spacing.
For example; Concrete range measurement principle is: establish the first car and send light pulse (being the infra-red detection signal) and ultrasonic pulse (being the ultrasonic fault detection signal) constantly at t0, first, second spacing is s, receives the light pulse of first car at t1 moment second car; The instantaneous second car of t2 receives the sound pulse of first car, then has:
t1＝t0+л’＝t0+s/c (1)
C is the light velocity in the formula,
t2＝t0+л”＝t0+s/v (2)
V is the velocity of sound in the formula, subtracts formula (1) by (2) and gets
t2-t1＝л”-л’＝s/v-s/c＝л (3)
∴s＝л/(1/v-1/c) (4)
∵c＞＞v ∴s＝vл (5)
л is the time-delay of sound to light in the formula.
It is thus clear that, as long as second car radar is measured the sound that the first car sends, the time-delay л of light pulse, then promptly measure first, second workshop apart from s.In addition; Second car radar can also obtain the relative velocity in first, second workshop according to time-delay л; Also can be provided with predefined critical speed in the storing sub-units 122, suppose that described critical speed is 10 kilometers/hour, then need only the vehicle speed per hour above 10 kilometers; No matter be that speed goes out 70 kilometers/hour vehicle than the slow scope of this car at 20 kilometers/hour vehicle or than this car soon, the portable terminal of present embodiment can calculate spacing and give the alarm to the driver exactly; Portable terminal still all can be kept watch on all automobiles and motor bike by day night, but can be to the hedge in the vehicle that rests in the roadside, roadside, objects such as the vehicle scrapped after having an accident and lamppost make a response.
Distance between above-mentioned first, the second car of measuring is the distances of two cars when static, and automobile and is always being done variable-speed motion always moving in the reality.Vehicle headway is the function of time in other words, and has randomness, might as well regard this distance as an analog signal to change of time.Because radar ranging can only carry out on some discrete moment, so radar ranging is just quite sampled to above-mentioned analog signal.According to sampling theorem, sampling frequency must be higher than two times signal highest frequency.But the upper limiting frequency of above-mentioned signal is uncertain of.Therefore, angle that can only collateral security safety is set out, and obtains the survey frequency that can guarantee traffic safety.For this reason, be foundation with existing automotive performance.The maximum relative velocity of supposing two cars is 2Vmax＜100m/s, and maximum relative acceleration is 2Amax＜40m/ (s*s), asking of two sub-samplings, during spacing changes delta s＜2m, could guarantee not have an accident between the secondary sample.For satisfying this requirement. the sample period, T should be:
T《Δs/2Vmax＝2m/100m/s＝0.02(s)
And the supposition radar system is when being no more than 0.1m according to the data prediction measured spacing and the error between the actual distance on next sample point, and automobile is safe.
If the distance that radar system is measured on first sample point is s1, the distance of measuring at second sample point is s2, and then the average velociity between this two sub-sampling is:
-v＝(s2-s1)/T (6)
∵
-v＞＝Vmax
By the motion Xue Zhi:
Vmin+(2amax)T＞＝Vmax
∴Vmax＜＝
-v+(2amax)T (7)
Be located at for the second time that the instantaneous velocity of sample point is v2＜=vmax, then be sampled to for the second time for the third time between the sampling, the maximum that spacing changes can be known by kinematics, should be (s2 is the distance of on the 3rd sample point, measuring)
(s3-s2)max＝v2T+1/2(2amax)T*T＜＝vmaxT+amaxT*T (8)
And radar system according to the variable quantity that the average velociity of having calculated dopes is:
(S3’-S2)＝
-Vt (9)
At this moment predicated error is:
S3-s3’＝(s3-s2)-(s’3-s2)
＜＝(s3-s2)max-(s’3-s2)
＝vmaxT+amaxT*T-
-vT
＜＝(
-v+2amaxT)+amaxT*T-
-vT
＝3/2(2amax)*T*T
When T=0.02 second, 2amax=4.0m/s*s, then s3-s ' 3＜=3/2*40* (0.02) * (0.02)=0.024m＜=0.1m.Can meet the demands.
When adopting recurrent pulse to carry out radar surveying, by the radar surveying principle, can knowledge sound must be to the time-delay л of light less than cycle T, i.e. л＜T.If guarantee the range of 60m, then can calculate л＜0.25 by formula (5), but by sampling frequency requirement, the recurrence interval T=0.02s of pulse.So both can not satisfy simultaneously.In order to address this problem, make that subsequent movement terminal handler received pulse signal is more accurate, present embodiment is inserted the special pilot pulse of people in recurrent pulse, and range is confirmed that by distance between pilot pulse measuring period is by distance decision between recurrent pulse.The structure of pulse is as shown in Figure 5, and Fig. 5 has the modulating pulse structural representation among the portable terminal embodiment of automotive safety alarm function for the present invention.This modulating pulse comprises recurrent pulse and pilot pulse, and the recurrent pulse in the one-period is between two adjacent pilot pulses.Showing difference, the pilot pulse width more greatly 0 is felt the pulse and is dashed through paired pulses numbering, and the back is followed successively by 1; 2,3 ... No. 9; The time-delay of measuring is the time-delay of 0 bugle call pulse to No. 0 light pulse, and a bugle call pulse is to the time-delay of No. 1 light pulse ...; Can guarantee like this range 60m that stipulates can guarantee 0.02 second measuring period again.Because the light velocity is very high, so the propagation delay of light between two cars can be ignored, therefore as far as light pulse, 1-9 feels the pulse and dashes is unnecessary.In addition, visible by Fig. 2,1-9 feels the pulse and is punched between the pilot pulse is well-distributed.Therefore, as long as known the position of pilot pulse, then the position of 1-9 pulse also just knows.
Signal processing unit in the mobile terminal processor in concrete the realization, is the software design of mobile terminal processor (for example micro controller system) being done control system (signal processing unit) to the Signal Processing process.Wherein, because control system will be handled a plurality of incidents, and be again separate between each incident, for these incidents of ability concurrent processing, fully improve the degree of utilization of micro controller system, in program design, adopt interrupt mode in a large number.For example, by timer 1 interrupt routine, external interrupt 1 program is in conjunction with P1.4; Judge whether to be pilot pulse; 1 pair of pulse width from the output of P1.4 mouth of timer is carried out timer counter, interrupts if pulsewidth, gets into timer 1 greater than 8ms.Fig. 6 has the signal conditioning external interrupt program circuit scheme drawing among the portable terminal embodiment of automotive safety alarm function for the present invention; The signal conditioning timer that Fig. 7 has for the present invention among the portable terminal embodiment of automotive safety alarm function overflows the interrupt routine schematic flow sheet, and Fig. 8 has the signal conditioning main program flow scheme drawing among the portable terminal embodiment of automotive safety alarm function for the present invention.
The signal processing unit 12 of portable terminal is after calculating the spacing between two cars according to acousto-optic combination range measurement principle; Spacing and preset safe distance between vehicles are compared; Less than safe distance between vehicles, when running is dangerous, signal processing unit 12 will send the caution control command to security warning unit 13 at spacing; So that security warning unit 13 carries out security warning according to said caution control command to automobile.
Concrete, this security warning unit 13 also can be positioned at mobile terminal processor, and it comprises: the voice suggestion subelement is used for automobile is carried out the security warning of voice mode; The text prompt subelement is used for automobile is carried out the security warning of mode word.For example; As shown in Figure 2; Can remind restriction signal from the P1.4 mouth output warning of mobile terminal processor; Remind brake signal from the P1.5 mouth output warning of mobile terminal processor, can also be from the P1.6 mouth output prompting shows signal of mobile terminal processor, prompting shows the warning statement on portable terminal.Portable terminal can also pass through the text prompt subelement; Adopt the note form to notify the personnel of predefined relief, perhaps, through the voice suggestion subelement; The form of employing phone or visual telephone is notified the personnel of predefined relief, plays the artificial purpose of reminding and advising.The safe alerting pattern of above-mentioned portable terminal can realize reminding automatically the function of brake and automatic self-rescuing well, helps promoting, and can significantly reduce the generation of car accident.
Further, drive " blind spot " and cause traffic accident the most easily, when 20% truck traffic accident all occurred in the crossing right-hand rotation, this also was the maximum place of blind spot, and the automobilist is not easy to dodge automobile.The portable terminal of present embodiment to above-mentioned " blind spot " problem, has also designed the corresponding warning function.Wherein, said signal receiving unit also is used for establishing a communications link with the camera that is loaded on the automobile, and receives the detectable signal that said camera sends; Accordingly; Said signal processing unit; Also be used for the detectable signal that said signal receiving unit receives is analyzed; Judge in the surveillance zone of said camera whether exist the speed of a motor vehicle to surpass the dangerous vehicle of preset vehicle speed, and when in surveillance zone, having dangerous vehicle, send the caution control command to said security warning unit.
Concrete, two high cameras of speed of response are placed on the back mirror below on each car door respectively, constantly whether there is vehicle to occur in the monitoring car both sides back visibibility blind area; The scope of the surveillance zone of each camera can be 9.5 meters for length, and width is 3 meters.This camera has adopted the infrared image Detection Techniques, has high sensitivity, and in the time of in another automobile gets into surveillance zone, camera will be sent to detectable signal (analog signal) signal receiving unit of portable terminal; Signal receiving unit becomes digital signal through the A/D A and D converter with analog signal conversion; And this digital signal analyzed; Calculate according to image-forming principle; Judge in the surveillance zone of said camera whether have obstacle, for example cooperate to judge whether to exist the speed of a motor vehicle to surpass the dangerous vehicle of preset vehicle speed that the preset speed of a motor vehicle can specifically be provided with according to the technical merit of oneself driving with described radar in present embodiment front and treater; If dangerous vehicle; Then can light Warning light and voice reminder immediately, reach the automatic-aid function that certain value also can be initiated portable terminal automatically, for example if the speed of a motor vehicle reaches a certain preset vehicle speed through the security warning unit; Then in time remind the driver to note; The driver just can know an other car near, thereby take workaround, avoid causing accident because of the vision blind spot.
The portable terminal with automotive safety alarm function of present embodiment; Through utilizing portable terminal the radar institute signals detected that is loaded on the automobile is analyzed; Can judge whether traffic safety of automobile; And when running is dangerous, automatically chaufeur is sent caution, take safety measures such as brake to remind chaufeur; This mobile terminal structure is simple, reliable in function, low price; And this portable terminal is easy to carry, can generally adapt to various vehicles, as long as this vehicle has radar (vehicle of range finding and tachogenerator module).
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of programmed instruction; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although with reference to previous embodiment the present invention has been carried out detailed explanation, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (10)
1. the portable terminal with automotive safety alarm function is characterized in that, comprising: signal receiving unit, signal processing unit and security warning unit;
Said signal receiving unit is used for establishing a communications link with the acquisition sensor that is loaded on the automobile, and receives the detectable signal that said acquisition sensor sends;
Said signal processing unit; Be connected with said signal receiving unit; Be used for obtaining the automobile at said acquisition sensor place and the spacing between other automobiles according to the detectable signal that said signal receiving unit receives; And during less than preset safe distance between vehicles, send the caution control command to said security warning unit at said spacing;
Said security warning unit is connected with said signal processing unit, is used for the caution control command sent according to said signal processing unit, and automobile is carried out security warning.
2. the portable terminal with automotive safety alarm function according to claim 1 is characterized in that, said acquisition sensor is a collision avoidance radar.
3. the portable terminal with automotive safety alarm function according to claim 2 is characterized in that, the signal source of said collision avoidance radar is super sonic and infrared ray; Accordingly,
Said signal receiving unit comprises:
The light-receiving subelement is used to receive the infra-red detection signal that said collision avoidance radar sends;
The sound reception subelement is used to receive the ultrasonic fault detection signal that said collision avoidance radar sends;
Said signal processing unit specifically is used for said infra-red detection signal, ultrasonic fault detection signal are analyzed, and judges whether traffic safety of automobile.
4. the portable terminal with automotive safety alarm function according to claim 3 is characterized in that, said signal processing unit comprises:
Computation subunit is used for according to said infra-red detection signal, ultrasonic fault detection signal, obtains the automobile at said collision avoidance radar place and the spacing between other automobiles;
Storing sub-units is used to store predefined safe distance between vehicles;
Compare subelement; Be connected with storing sub-units with said computation subunit respectively; The spacing that is used for said computation subunit is obtained and the safe distance between vehicles of said storing sub-units relatively and at said spacing during less than said safe distance between vehicles, are sent to said security warning unit and to be warned control command.
5. the portable terminal with automotive safety alarm function according to claim 1 is characterized in that, said security warning unit comprises:
The voice suggestion subelement is used for automobile is carried out the security warning of voice mode;
The text prompt subelement is used for automobile is carried out the security warning of mode word.
6. the portable terminal with automotive safety alarm function according to claim 3 is characterized in that, said portable terminal also comprises:
The start-up control unit is used for establishing a communications link with the collision avoidance radar that is loaded on the automobile, and sends startup or out code to said collision avoidance radar.
7. the portable terminal with automotive safety alarm function according to claim 6; It is characterized in that; Said start-up control unit; Also be used to produce modulating pulse, and said modulating pulse is sent to collision avoidance radar, so that said collision avoidance radar adopts said modulating pulse that infra-red detection signal, ultrasonic fault detection signal are modulated the back emission.
8. the portable terminal with automotive safety alarm function according to claim 7 is characterized in that, also is provided with oscillator in the said portable terminal and amplifies isolator; Said amplification isolator is connected with acquisition sensor with said oscillator respectively.
9. the portable terminal with automotive safety alarm function according to claim 6 is characterized in that said modulating pulse comprises recurrent pulse and pilot pulse, and the said recurrent pulse in the one-period is between two adjacent pilot pulses.
10. according to the arbitrary described portable terminal of claim 1-9, it is characterized in that with automotive safety alarm function,
Said signal receiving unit also is used for establishing a communications link with the camera that is loaded on the automobile, and receives the detectable signal that said camera sends; Accordingly,
Said signal processing unit; Also be used for the detectable signal that said signal receiving unit receives is analyzed; Whether judge in the surveillance zone of said camera dangerous vehicle, and when in surveillance zone, having dangerous vehicle, send the caution control command to said security warning unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847739A (en) * | 2012-11-30 | 2014-06-11 | 三星电子（中国）研发中心 | Method and system for automatically following car and assisting parking by means of mobile terminal |
| CN105263757A (en) * | 2013-05-29 | 2016-01-20 | 罗伯特·博世有限公司 | Method and device for detecting a collision between a vehicle and an object by using a mobile terminal that can be coupled to the vehicle |
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