CN201036979Y

CN201036979Y - Automobile acceleration indicator on rear

Info

Publication number: CN201036979Y
Application number: CNU2006200052844U
Authority: CN
Inventors: 周亦武
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-23
Filing date: 2006-01-23
Publication date: 2008-03-19
Anticipated expiration: 2016-01-23

Abstract

The utility model relates to a display unit after a car accelerates and comprises an acceleration transducer, a signal processor and an acceleration display; the utility model is characterized in that the acceleration transducer comprises two swinging strips which can freely swing back and forth in the car driving direction, that is, an acceleration swinging strip and a deceleration swinging strip; a signal inductor is arranged on the moving path of the top of the swinging end of the swinging strip; the top of the swinging end of the swinging strip is provided with an element for triggering the inductor; when the triggering element is near the signal inductor, an electric signal is produced and is sent to the display for displaying after processed by the signal processor; the units are connected by data bus. The utility model is arranged in the rear of the car and displays the actual speed-changing state for car drivers in the rear of the car, thereby reducing or avoiding accidents such as rear-end.

Description

Automobile acceleration rear indicator

Technical field

The utility model relates to a kind of automobile acceleration rear indicator, and it is a kind of automobile rear that is installed in, and the automobile driver to this car back shows that it is acceleration information that this vehicle speed changes, with the device that reduces or avoid accident to take place.

Background technology

The present rear indicator of indication running state on the automobile---brake indication taillight car navigating mate backward shows the brake operation state of this car navigating mate, can not reflect the velocity variations that Ben Che causes owing to other reasons, thereby make back car navigating mate can not understand the time of day of front truck motion fully, be difficult to take measures necessary early according to front truck actual motion state, to such an extent as to the time of taking measures after being awake to the danger shortens greatly, can not tackle calmly, very easily cause the accident that knocks into the back even overturn.

Summary of the invention

The purpose of this utility model provides and a kind ofly is installed in automobile rear, the car navigating mate is indicated the device of the actual change of this car kinematic velocity backward, and it is unique practical to have demonstration information, and display mode is eye-catching, and state shows characteristics of real time.

Principle of work of the present utility model is: an acceleration pick-up is installed in automobile, and sensor includes two pendulum bars that can freely swing, the acceleration/accel of measured automobiles acceleration and deceleration respectively before and after vehicle traveling direction.The angle and the relation between the acceleration/accel of pendulum bar swing can be derived by the following method: establish the center of gravity of pendulum bar certain position A point at the pendulum bar, in the strained condition of the effect bottom bar of acceleration/accel as shown in Figure 4.Be located under the effect of a certain force of inertia, the pendulum bar has been put maximum angle θ, and this moment, to put suffered the making a concerted effort of bar be 0, promptly force of inertia and centripetal force make a concerted effort equate with the gravity of putting bar, at this moment

F is used to=the heavy tan θ of f

Or ma=mgtan θ

Be a=gtan θ

In the formula, g is an acceleration due to gravity.

The technical solution of the utility model is achieved in that

A kind of automobile acceleration rear indicator, be installed on automobile rear, comprise acceleration pick-up, signal processor and acceleration/accel telltale three parts, it is characterized in that described acceleration pick-up comprises two pendulum bars that freely swing before and after vehicle traveling direction, promptly quicken the pendulum bar and slow down the pendulum bar; On the running path at described pendulum bar swinging end top the induction of signal device is housed, at pendulum bar swinging end top the element that can trigger sensing device is installed simultaneously, during described triggering element approach signal sensing device, produce electric signal, and after the processing of described signal processor, be sent to described telltale and show that said units is connected by data bus.

The induction of signal device of described vehicle acceleration sensor adopts Hall element, and described triggering element adopts magnet.

Described signal processor comprises micro controller system.

Described acceleration/accel telltale comprises how row's multiple row luminescent devices are lined up the acceleration/accel display matrix, are launched to light to bilateral symmetry by center-point during demonstration.

Described acceleration/accel oriental matrix comprises acceleration display matrix and deceleration display matrix, and two display matrixes adopt the luminescent device of different colours.

Technique effect of the present utility model is conspicuous: it is installed on the full position of automobile rear, show driving states in real time, can make the navigating mate of the automobile of this car back, can understand the acceleration, deceleration state of this car directly, apace, judge early, take measures, reach the purpose that the minimizing accident takes place.

Description of drawings

4 in the utility model accompanying drawing, wherein

Fig. 1 is the front view of automobile acceleration rear indicator;

Fig. 2 is the top view of automobile acceleration rear indicator;

Fig. 3 is the A-A cutaway view of Fig. 1;

Fig. 4 is the location state diagram of pendulum bar swing maximum angle among Fig. 3.

Among the figure, 1. deceleration display matrix 2. quickens display matrix 3. sensors and signal processor 4. telltales 5. acceleration sensing devices 6. deceleration sensing devices 7. deceleration pendulum bars 8. acceleration pendulum bars 9. magnet.

The specific embodiment

This device is installed on the full position at the rear portion of automobile, the automobile driver of this car back can clearly be seen.This device mainly is made up of acceleration pick-up, acceleration signal treater and telltale three parts.Measure the acceleration signal of automobile sport from acceleration pick-up, through the judgement of signal processor, calculate and processing, obtain and the corresponding data of pickup, again these data are sent to telltale and show.When automobile with constant-speed operation or when static, lighted without any luminescent device on this device, display.When automobile is in acceleration mode, quicken to be lighted with the cooresponding luminescent device of accekeration in the display matrix 2.Acceleration/accel is big more, and lighted luminescent device is many more, and the area of lighting is corresponding big more.When automobile is in deceleration regime, lighted with the cooresponding luminescent device of accekeration in the deceleration display matrix 1, same, the area of demonstration is corresponding with the value of acceleration/accel.

The structure of described acceleration pick-up as shown in Figure 3, comprises that the pendulum bar of two suspensions is called the acceleration pendulum bar 8 and the pendulum bar 7 that slows down.Quickening pendulum bar 8 can only swing under acceleration mode backward; And the pendulum bar 7 that slows down can only swing forward under deceleration regime.Magnet 9 is being inlayed on the top of pendulum bar, the approach that moves through at magnet 9 is equipped with a plurality of Hall

magnetic induction sensors

5 and 6, the position of corresponding different acceleration/accels respectively by measuring the position of the Hall element that the pendulum bar can reach, can calculate the acceleration/accel of any time in this car motion process.

Described telltale 4 as shown in Figure 1 and Figure 2, comprises how row's multiple row luminescent devices are lined up acceleration/accel display matrix 1 and 2, and each row luminescent device represents that one of acceleration/accel is measured, and columns is many more, and its sensitivity that shows acceleration/accel is high more.Launched to light to bilateral symmetry by center-point during demonstration, the columns of lighted luminescent device is many more, shows that the numerical value of acceleration/accel is big more.Equally, quicken 2 of display matrixes and light viewing area with the corresponding area of acceleration value of car acceleration; Quicken and slow down to indicate by the luminescent device matrix of two kinds of different colours respectively.Deceleration is called deceleration display matrix 1 by the demonstration of emitting red light matrix of device; Acceleration can select the luminescent device matrix of other any color to show, is called and quickens display matrix 2.1 of deceleration display matrix is lighted the viewing area with the corresponding area of acceleration value of car deceleration, this viewing area of being lighted from center-point to both sides with same amplitude expansion.The acceleration modes that two kinds of different colours are corresponding different, help back car navigating mate faster, judge more intuitively.

Said acceleration signal processor adopting micro controller system is as core devices, and the acceleration signal that acceleration pick-up is measured carries out Intelligent treatment, and result is sent to telltale shows.The method of handling is as follows:

Be provided with n Hall magnetic induction device by the positional alignment shown in the accompanying drawing 3, the different angles of the corresponding pendulum of the sensing device of diverse location bar swing, i the pairing angle of sensing device is made as θ i.The signal of each sensing device is constantly measured in the signal processor circulation, and the signal that repeatedly records is carried out intelligent decision and data handing, is transformed to the maximum angle θ i of pendulum bar swing.If the calculated amount corresponding to the pickup value is represented with A.Then

A＝g·tanθi

The move acceleration/accel in this moment of corresponding this car of this result of calculation is quantified as the columns of display lighting device with it, is sent to telltale then, and just correspondence is lighted luminescent device with the cooresponding columns of acceleration/accel on telltale.

Sensor and signal processor 3 record the acceleration/accel of automobile sport, and the line data of going forward side by side is handled, and then the result are sent to telltale 4 and show.Consider the resolution capability of human eye, refreshed in per 0.1 second once and show.Measurement, the result of calculation of quickening the swing of pendulum bar is sent to quickens the display matrix demonstration; Measurement, result of calculation that the pendulum bar that slows down is swung then are sent to the deceleration display matrix and show.

Slow down pendulum bar 7 at the deceleration regime lower swing, deceleration sensing device 6 the magnet 9 on pendulum bar top with it near the time produce electric signal, signal processor is handled after receiving this signal, and it is transformed to the digital signal output of lighting deceleration viewing area 1; In like manner, quicken pendulum bar 8 at the acceleration mode lower swing, the signal that quickens sensing device 5 generations is used to light acceleration viewing area 2.

Claims

1. automobile acceleration rear indicator, be installed on automobile rear, comprise acceleration pick-up, signal processor and acceleration/accel telltale three parts, it is characterized in that described acceleration pick-up comprises two pendulum bars that freely swing before and after vehicle traveling direction, promptly quicken the pendulum bar and slow down the pendulum bar; On the running path at described pendulum bar swinging end top the induction of signal device is housed, at pendulum bar swinging end top the element that can trigger sensing device is installed simultaneously, during described triggering element approach signal sensing device, produce electric signal, and after the processing of described signal processor, be sent to described telltale and show that said units is connected by data bus.

2. automobile acceleration rear indicator according to claim 1 is characterized in that the induction of signal device of described vehicle acceleration sensor adopts Hall element, and described triggering element adopts magnet.

3. automobile acceleration rear indicator according to claim 1 and 2 is characterized in that described signal processor comprises micro controller system.

4. automobile acceleration rear indicator according to claim 1 and 2 is characterized in that described acceleration/accel telltale comprises how row's multiple row luminescent devices are lined up the acceleration/accel display matrix, are launched to light to bilateral symmetry by center-point during demonstration.

5. automobile acceleration rear indicator according to claim 4 is characterized in that described acceleration/accel oriental matrix comprises acceleration display matrix and deceleration display matrix, and two display matrixes adopt the luminescent device of different colours.