CN102520411A - Simple automobile turning distance measuring device - Google Patents
Simple automobile turning distance measuring device Download PDFInfo
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- CN102520411A CN102520411A CN2011104559459A CN201110455945A CN102520411A CN 102520411 A CN102520411 A CN 102520411A CN 2011104559459 A CN2011104559459 A CN 2011104559459A CN 201110455945 A CN201110455945 A CN 201110455945A CN 102520411 A CN102520411 A CN 102520411A
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- distance measuring
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Abstract
The invention discloses a simple automobile turning distance measuring device, which comprises an ultrasonic distance measuring module, a steering wheel angle sensor, a stepping motor driving module, a central controller and a power supply, wherein the power supply is respectively connected with the stepping motor driving module, the central controller and the steering wheel angle sensor, and the ultrasonic distance measuring module is connected with the central controller. The device is simple in structure, can be used for measuring the distance between an automobile and an obstacle out of the view field of a driver, effectively solves the problem that a distance cannot be measured when an automobile turns, and is particularly applicable to a safety anti-collision system for automobile distance measurement.
Description
Technical field
The present invention relates to the automobile distance measuring equipment, especially relate to a kind of simple automobile turning distance measuring equipment.
Background technology
According to statistics, a lot of automobile collision accidents all are that the driver fails to notice that the place ahead barrier causes when turning.At present, safe collision avoidance system has developed into to a certain degree though ultrasonic range finder and automobile are found range, and they generally all are the straight line range findings, and a kind of simple and practical scheme that when automobile turning, can effectively solve the range finding problem is not arranged so far yet.
Summary of the invention
For solving the problem that prior art exists, the present invention provides a kind of simple automobile turning distance measuring equipment, solves the technological deficiency that present automobile range finding CAS exists.
The technical scheme that the present invention adopts is:
A kind of simple automobile turning distance measuring equipment; Comprise ultrasonic distance measuring module, steering wheel angle sensor, step motor drive module, central controller and power supply; Said power supply connects step motor drive module, central controller, steering wheel angle sensor respectively, and said ultrasonic distance measuring module connects central controller.
The present invention also comprises ultrasonic emitting sensor, ultrasound wave receiving sensor and signal processing circuit, and said ultrasonic distance measuring module connects ultrasonic emitting sensor, ultrasound wave receiving sensor and signal processing circuit respectively.
Said ultrasonic distance measuring module is two standalone modules, specifically is divided into left ultrasonic distance measuring module and right ultrasonic distance measuring module.
Said left ultrasonic distance measuring module and right ultrasonic distance measuring module are arranged at respectively on the left side and right corner of automotive front end; Said ultrasonic emitting sensor and ultrasound wave receiving sensor are fixed together through sensor overall fixed plate and the rolling disc that has locating slot, respectively by step motor drive.
When automobile starting, the energized device can move.Steering wheel angle sensor at first detects steering wheel angle; And be translated into electric signal and be input to central controller; Central controller calculates wheel steering angle size according to database and makes stepper motor rotate certain angular displacement, judges that again the wheel deflection selects one of them ultrasonic distance measuring module (left side or right) to find range.Ultrasonic distance measuring module (left side or right) is installed on two left with the rightest corners of automobile headstock, can enlarge the range finding visual field in bend the place ahead to greatest extent.In order to prevent that wheel steering angle is not corresponding with the ultrasonic probe corner, need before the automobile flameout to forward bearing circle to middle, make ultrasonic probe ajust.
The invention has the beneficial effects as follows: efficiently solve the problem that automobile turning can not be found range, be particularly useful for the automobile safe collision avoidance system of finding range, have simple in structure, safe and reliable, easy to maintenance, advantage such as processing cost is low.
Description of drawings
Fig. 1 is one-piece construction figure of the present invention
Fig. 2 is the steering wheel angle sensor structural drawing
Among the figure: transmission gear 1; Transmission gear 2; Steering column 3; Multiturn potentiometer 4; Sensor circuit board 5; Potentiometer is rubber 6 fixedly; Power ground end 7; Positive source 8; Signal output part 9.
Fig. 3 is ultrasonic ranging sensor construction figure;
Among the figure: ultrasonic emitting sensor 10; Ultrasound wave receiving sensor 11; Rolling disc 12; Stepper motor 13; Motor set collar 14; Sensor overall fixed plate 15; Set bolt 16.
Fig. 4 is the central controller processing flow chart
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
As shown in Figure 1; Simple automobile turning distance measuring equipment of the present invention; Comprise ultrasonic distance measuring module, steering wheel angle sensor, step motor drive module, central controller and power supply; Said power supply connects step motor drive module, central controller, steering wheel angle sensor respectively, and said ultrasonic distance measuring module connects central controller.This simple automobile turning distance measuring equipment also comprises ultrasonic emitting sensor, ultrasound wave receiving sensor and signal processing circuit, and said ultrasonic distance measuring module connects ultrasonic emitting sensor, ultrasound wave receiving sensor and signal processing circuit respectively.
Said ultrasonic distance measuring module is two standalone modules, is specially left ultrasonic distance measuring module and right ultrasonic distance measuring module.
Said left ultrasonic distance measuring module and right ultrasonic distance measuring module are arranged at respectively on the left side and right corner of automotive front end.
Said ultrasonic emitting sensor and ultrasound wave receiving sensor are fixed together through sensor overall fixed plate and the rolling disc that has locating slot, respectively by step motor drive.
For ease of understanding, do brief description below in conjunction with Fig. 2 to Fig. 4.
Like Fig. 2.Transmission gear 1 is installed on the steering column 3; Transmission gear 2 and transmission gear 1 engaged transmission; The knob of multiturn potentiometer 4 cooperates with transmission gear 2; Potentiometer fixedly rubber 6 is enclosed within the periphery of multiturn potentiometer 4, and multiturn potentiometer 4 is electrically connected with sensor circuit board 5, and potentiometer fixedly rubber 6 also is connected with sensor circuit board 5.In addition, power ground end 7, positive source 8 and the signal output part 9 in addition that are electrically connected with sensor circuit board 5.Transmission gear 1 is to pass to multiturn potentiometer 4 to the angular displacement of steering column with transmission gear 2 purposes, is convenience of calculation, and both sizes are preferably identical.General vehicle steering can change 3 circles, and multiturn potentiometer 4 can meet the demands fully.Its resistance changes with corner and changes, and handles through sensor circuit again, is output as the electric signal that central controller can be discerned.When bearing circle was in the middle, the resistance of multiturn potentiometer 4 also should be made as intermediate value.
In Fig. 3; Ultrasonic emitting sensor 10 is fixed together with rolling disc 12 through the fixed head (plastic plate) that has locating slot with ultrasound wave receiving sensor 11; Fluting cooperates with the rotating shaft of stepper motor 13 in the middle of the rolling disc 12; The housing of stepper motor 13 is fixed on the sensor overall fixed plate 15 by two electrode set collars 14, and sensor overall fixed plate 15 is installed on two left with the rightest corners of automobile headstock through set bolt 16.Because ultrasonic emitting, receiving sensor and rolling disc 12 quality are all very little, can select the high stepper motor of the small but excellent degree of torque for use.
As shown in Figure 4; When the engaging means power supply; The central processing unit program gets into initialization, and the cycle detection judgement has rotated back into the middle up to bearing circle then, and then measures the wheel steering angle size; According to the stepper motor while rotating certain angle of this corner size driving the right and left, judge the wheel yawing moment then.Direction then drives the right ultrasonic distance measuring module left; Direction then drives left side ultrasonic wave module to the right.Last return measurement wheel steering angle subroutine, circulation is so always gone down.Like this, the distance of ultrasonic sensor between the barrier that can measure under the situation of automobile turning outside automobile and the driver's field range effectively solved the general automobiles difficult problem of automobile turning range finding that safe collision avoidance system exists of finding range.
Above embodiment specifies the present invention, but said content is merely preferred embodiment of the present invention, can not be considered to be used to limit practical range of the present invention.All equalizations of doing according to application range of the present invention change and improve etc., all should still belong within the patent covering scope of the present invention.
Claims (5)
1. simple automobile turning distance measuring equipment; It is characterized in that comprising ultrasonic distance measuring module, steering wheel angle sensor, step motor drive module, central controller and power supply; Said power supply connects step motor drive module, central controller, steering wheel angle sensor respectively, and said ultrasonic distance measuring module connects central controller.
2. according to the said simple automobile turning of claim 1 distance measuring equipment; It is characterized in that also comprising ultrasonic emitting sensor, ultrasound wave receiving sensor and signal processing circuit, said ultrasonic distance measuring module connects ultrasonic emitting sensor, ultrasound wave receiving sensor and signal processing circuit respectively.
3. according to the said simple automobile turning of claim 2 distance measuring equipment, it is characterized in that said ultrasonic distance measuring module is two standalone modules, is specially left ultrasonic distance measuring module and right ultrasonic distance measuring module.
4. according to the said simple automobile turning of claim 3 distance measuring equipment, it is characterized in that said left ultrasonic distance measuring module and right ultrasonic distance measuring module, be arranged at respectively on the left side and right corner of automotive front end.
5. according to the said simple automobile turning of claim 4 distance measuring equipment, it is characterized in that said ultrasonic emitting sensor and ultrasound wave receiving sensor are fixed together through sensor overall fixed plate and the rolling disc that has locating slot, respectively by step motor drive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104559459A CN102520411A (en) | 2011-12-29 | 2011-12-29 | Simple automobile turning distance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104559459A CN102520411A (en) | 2011-12-29 | 2011-12-29 | Simple automobile turning distance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102520411A true CN102520411A (en) | 2012-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011104559459A Pending CN102520411A (en) | 2011-12-29 | 2011-12-29 | Simple automobile turning distance measuring device |
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| CN (1) | CN102520411A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786952A (en) * | 2015-03-31 | 2015-07-22 | 山东理工大学 | Novel automobile laser ranging device |
| CN104960466A (en) * | 2015-07-22 | 2015-10-07 | 福州大学 | Vehicle turning safety assisting system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01254887A (en) * | 1988-03-29 | 1989-10-11 | Ind Technol Res Inst | Automatically backparking apparatus for automobile |
| US5726647A (en) * | 1995-04-05 | 1998-03-10 | Bayersche Motoren Werke Aktiengesellscaft | Method and apparatus for avoiding a collision of a motor vehicle |
| CN101046391A (en) * | 2006-03-31 | 2007-10-03 | 爱信艾达株式会社 | Navigation system |
| CN101132965A (en) * | 2005-03-03 | 2008-02-27 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method and device for avoiding a collision as a vehicle is changing lanes |
| CN201484347U (en) * | 2009-07-03 | 2010-05-26 | 北京工业大学 | Automobile early-warning device for rear-end collision prevention and reversing |
-
2011
- 2011-12-29 CN CN2011104559459A patent/CN102520411A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01254887A (en) * | 1988-03-29 | 1989-10-11 | Ind Technol Res Inst | Automatically backparking apparatus for automobile |
| US5726647A (en) * | 1995-04-05 | 1998-03-10 | Bayersche Motoren Werke Aktiengesellscaft | Method and apparatus for avoiding a collision of a motor vehicle |
| CN101132965A (en) * | 2005-03-03 | 2008-02-27 | 大陆-特韦斯贸易合伙股份公司及两合公司 | Method and device for avoiding a collision as a vehicle is changing lanes |
| CN101046391A (en) * | 2006-03-31 | 2007-10-03 | 爱信艾达株式会社 | Navigation system |
| CN201484347U (en) * | 2009-07-03 | 2010-05-26 | 北京工业大学 | Automobile early-warning device for rear-end collision prevention and reversing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104786952A (en) * | 2015-03-31 | 2015-07-22 | 山东理工大学 | Novel automobile laser ranging device |
| CN104960466A (en) * | 2015-07-22 | 2015-10-07 | 福州大学 | Vehicle turning safety assisting system |
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Application publication date: 20120627 |