CN201009806Y

CN201009806Y - Automobile back lamp

Info

Publication number: CN201009806Y
Application number: CNU2007201060170U
Authority: CN
Inventors: 桑方明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-01-26
Filing date: 2007-01-26
Publication date: 2008-01-23
Anticipated expiration: 2017-01-26

Abstract

An auto taillight comprises a brake pressure sensor, a display controller connected with the brake pressure sensor, and a plurality of ring LED lamps in target-form distribution, wherein the display controller converts the analog signal of the brake pressure sensor into a digital signal to simultaneously control the ring LED lamps to switch sequentially and emit light periodically in a predetermined brake force display mode, and the switch frequency depends on the digital signal; and the input terminal of each ring LED lamp is respectively connected with corresponding output terminal in the display controller. According to the utility model, the auto taillight is designed to the plurality of ring LED lamps, which are used for displaying the magnitude of the brake force in the predetermined display mode through the cooperation of the brake pressure sensor and the display controller, and the brake force depends on the switch frequency. Accordingly, the taillight can not only display original brake signal but also display the brake force information, and the magnitude of the brake force can be displayed visually for drivers in following vehicles, thereby ensuing the safe driving.

Description

A kind of automobile tail light

Technical field

The utility model relates to automobile tail light, is meant a kind of automobile tail light that can show braking strength especially.

Background technology

Along with the raising of people's living standard, the owning amount of automobile is the trend that significantly rises in recent years, and category of highways promotes, the speed of a motor vehicle improves, the also corresponding trend that linearly rises of traffic accident, and particularly on express highway, the vehicle rear-end collision incident happens occasionally.At present, be positioned at the stoplight stop lamp of automobile tail, glancing impact just lights, and promptly has only automobile to be in braking or these two signals of non-braking mode.During practice, automobile is on express highway, if the front truck emergency braking, chaufeur finds that the front truck stoplight stop lamp lights, and front truck is not to stop immediately, it seems from the back, the speed of a motor vehicle is still very fast, many chaufeurs can think that its speed of a motor vehicle still is higher, are not that a corresponding pin is stopped suddenly, even still keep original speed, but when front truck reduces, automobile will stop immediately, and at this moment back car emergency braking more but has little time sometimes, has so just caused rear crash event.Simultaneously, when exercising at greasy weather or night, fog lamp is in illuminating state, and stoplight stop lamp can be lighted during automobile brake, the automobile tail light of originally lighting have just improved brightness and have represented braking state, do not cause bigger visual impact to chaufeur, this is at greasy weather or night, the chaufeur of back car and can differentiate unclear.Therefore, have only the stoplight stop lamp that shows braking or two signals of non-braking mode, can not satisfy present needs far away.

In recent years, have on some later-model automobiles to be equipped with the high-mount brake lamp that can show emergency braking condition, that is, when automobile slowly slowed down, this high-mount brake lamp did not show that when the automobile emergency glancing impact, this high-mount brake lamp lights yet.As the patent No. is that the Chinese utility model patent " full automatic vehicle high-mount brake lamp controller " of ZL200420089045.2 (notification number is CN2748332Y) discloses so a kind of technical scheme, it is by microprocessor continuous sampling speed of a motor vehicle in the sampling period of setting, frequency signal that car speed sensor or wheel speed sensors are obtained and last sampled value are relatively, draw the deceleration/decel of automobile, thereby whether the control high-mount brake lamp is lighted, deceleration/decel greatly then is judged to be emergency braking, lights high-mount brake lamp.Because high-mount brake lamp needs to be provided with separately, has also promptly increased an output newly, and the controller architecture of control high-mount brake lamp more complicated again, what the what's new that emergency braking shows brought is the significantly raising of manufacturing cost; In addition, left and right sides stoplight stop lamp and high-mount brake lamp are respectively three outputs, an output shows a signal, stoplight stop lamp and high-mount brake lamp can not unite two into one, and lay respectively at three different positions, high-mount brake lamp wherein often is arranged on the top of automobile tail back window glass, chaufeur need be observed left and right sides stoplight stop lamp and this high-mount brake lamp simultaneously, sometimes, chaufeur can't be taken one of them lamp into account because of there is limitation in the visual field, will influence chaufeur like this and fail in time to obtain the information of front truck, cause and judge time-delay or error, lead to traffic accident then.

Summary of the invention

Technical problem to be solved in the utility model is the present situation at prior art, a kind of automobile tail light that can show the chaufeur braking strength are provided, and unite two into one with stoplight stop lamp, make these automobile tail light can show original brake signal, the information that also can show the braking dynamics, and the information intuitive display of braking dynamics size understands that the chaufeur that is easy to the back car is judged, thereby chaufeur can in time be made judge and take corresponding actions, guarantee traffic safety.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: these automobile tail light is characterized in that: include brake pressure sensor, display control switch and be many ring LED lamps that the target shape distributes; Wherein, described brake pressure sensor links to each other with display control switch; This display control switch is a digital signal with the analog signal conversion of brake pressure sensor, the many rings of this display control switch control simultaneously LED lamps are changed successively by the braking strength display format of setting and are circulated luminously, and wherein the inversion frequency of conversion luminescence depends on this digital signal; The input end of each ring LED lamp links to each other with corresponding mouth in the described display control switch respectively in described many ring LED lamps.

When braking automobile, the braking strength display format that encircles the LED lamp can be predisposed to diversified more, such as: the many rings of supposition LED lamps are totally six rings, from interior encircle to outer shroud called after the 1st ring to the 6th ring, each ring is luminescence unit independently, and the braking strength display format of braking mode can be successively: the 6th ring, and the 5th encircles, the 4th ring, the 3rd ring, the 2nd ring, the 1st ring, then recirculation shows that back and forth promptly big ring is changed to the luminous successively of little ring; Also can be the 1st～6 ring, the 1st～5 ring, the 1st～4 ring, the 1st～3 ring, the 1st, 2 rings, the 1st ring, then recirculation back and forth shows; But for braking strength can be obtained from the circulation display format of these many ring LED lamps more intuitively, the braking strength display format of described many ring LED lamps is good with the light-emitting mode by diffusion around the middle mind-set, is example with above-mentioned, also promptly the 1st encircle, 1st, 2 rings, the 1st～3 ring, the 1st～4 ring, the 1st～5 ring, the 1st～6 ring presents radial illumination effect, concerning the chaufeur of back car, more eye-catching, the caution effect is better.

Described display control switch can adopt existing various technology, realize such as the micro controller system that utilizes band A/D translation function, as the STC12C2052AD micro controller system, but for ease of implementing, guarantee that many ring LED lamps show accurate, this display control switch can include analog signal amplifier, 2052AD chip and the shift register 74HC595 chip that links to each other with the 2052AD chip, wherein, brake pressure sensor links to each other with this analog signal amplifier, and the output signal of analog signal amplifier promptly is sent in the 2052AD chip, each ring LED lamp promptly links to each other with the leading foot of this 74HC595 chip accordingly, 2052AD chip wherein and 74HC595 chip are according to the prior write-in program of display format of many ring LED lamps, define each and introduce pin and leading foot, utilize this 2052AD and 74HC595 chip to realize that LED is moving, static technique for displaying is quite ripe, show in bank rate, the large-scale screen that gives the correct time, the city neon light all is widely used in building.

When opening for ease of the fog lamp of front truck, back car chaufeur can directly observe the speed of a motor vehicle size of front truck, can also utilize these automobile tail light not show braking mode, and the running velocity of display automobile when opening automobile fog light, specific design is as follows: also include the speed sensor that mouth links to each other with described 2052AD chip, wherein, the 2052AD chip is converted into digital signal with the analog signal of speed sensor, this 2052AD chip controls is encircled the LED lamp more and is changed successively by the speed of a motor vehicle display format of setting and circulate luminous, and wherein the inversion frequency of conversion luminescence depends on that this speed sensor transforms the digital signal that obtains, and, the input end of each ring LED lamp links to each other with corresponding leading foot in the 2052AD chip respectively in many ring LED lamps, like this, automobile speed is high more, many ring LED lamp inversion frequencies are fast more, and back car chaufeur just can be judged the speed of a motor vehicle of front truck according to the speed of its conversion luminescence;

These automobile tail light unite two into one stoplight stop lamp and fog lamp, and stoplight stop lamp is more preferential than fog lamp, the same time of this display control switch can only be exported braking strength display format or speed of a motor vehicle display format, therefore, can utilize braking signal switch and fog lamp switch, and by being provided with of 2052AD chip realized, that is: the introducing pin of 2052AD chip can link to each other with fog lamp switch with braking signal switch respectively, under the braking signal switch closure state, the 74HC595 chip is preferentially exported, open at braking signal switch, under the fog lamp switch closure state, the 2052AD chip is preferentially exported, like this, when braking signal switch was closed, no matter fog lamp switch is closed was not had not, the many rings of the preferential control of display control switch LED lamp shows the braking strength display format, open and work as braking signal switch, while fog lamp switch closure, display control switch is just controlled many ring LED lamps and is shown speed of a motor vehicle display formats.

When automobile is not in braking mode and fog lamp and opens, many ring LED lamps show the speed of a motor vehicle at this moment, this speed of a motor vehicle display format can be predisposed to diversified, such as: the display mode successively that is changed to interior ring from many ring LED lamps by outer shroud, perhaps by the interior display mode successively of encircling outer shroud, then the chaufeur of car can be judged the front truck running velocity of this moment according to its circulation speed that shows of beating, but for obviously being different from the braking strength display format, the speed of a motor vehicle display format of described many ring LED lamps is good with the light-emitting mode successively of ring in being changed to by outer shroud.

Compared with prior art, advantage of the present utility model is: original automobile tail light mono-is the luminous or mode extinguished, be designed to many ring LED lamps, and the control by brake pressure sensor signal and display control switch, Kuo San radial display mode shows the size of braking strength from center to periphery, frequency is fast more, then braking strength is big more, make these automobile tail light can show the due speed-slackening signal of original automobile tail light, the information that also can show the braking dynamics, and the presentation mode of braking dynamics size is simple and clear, the chaufeur that is highly susceptible to the back car judges that like this, chaufeur just can in time be made judgement and take corresponding actions, avoid the rear-end collision collision, guarantee traffic safety; And utilization 2052AD and 74HC595 chip convert the signal of brake pressure sensor to frequency size that displacement shows, and the easy to do braking dynamics that has realized coming with the size of inversion frequency display automobile is easy to produce in enormous quantities manufacturing; Simultaneously, utilize speed sensor, many ring LED lamps are shown according to its velocity magnitude successively with another kind of speed of a motor vehicle display format, come display automobile running velocity intuitively by inversion frequency in conjunction with the 2052AD chip, very practical; The utility model is applicable in existing any vehicle, and is easy to implement, and simple installation.

Description of drawings

Fig. 1 is the structural representation of LED lamp among the utility model embodiment;

Fig. 2 is the junction circuit figure of brake pressure sensor and analog signal amplifier among the utility model embodiment;

Fig. 3 is the junction circuit figure of 2052AD chip haptic element among the utility model embodiment;

Fig. 4 is the junction circuit figure of 74HC595 chip haptic element among the utility model embodiment;

Fig. 5 is the junction circuit figure of center one ring LED lamp among Fig. 1;

Fig. 6 produces the junction circuit figure of 12V and 5V voltage for utilizing automobile power source among the utility model embodiment.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

To shown in Figure 6, these automobile tail light include the many ring LED lamps, brake pressure sensor J3, speed sensor J2 and the display control switch that are the distribution of target shape as Fig. 1;

In the present embodiment, as shown in Figure 1, many ring LED lamps are provided with six rings altogether, and wherein every ring LED lamp is set to 8, are luminescence unit independently, when showing braking mode, these 8 LED participate in work, and when showing the fog lamp state, for the purpose of saving, have only wherein 4 LED participation work, concrete junction circuit as shown in Figure 5;

Should many ring LED lamps from interior encircle to the 1st ring of outer shroud called after successively to the 6th ring, under the automobile brake state, it is luminous to be the circulation of braking strength display format with these many ring LED lamps, the speed of beating with conversion shows the braking strength size of this car, the light-emitting mode of diffusion around the mind-set during this braking strength display format is served as reasons, also promptly be followed successively by the 1st ring, the 1st, 2 rings, the 1st～3 ring, the 1st～4 ring, the 1st～5 ring, the 1st～6 ring, recirculation is reciprocal, radial generally illumination effect; When automobile is in non-braking mode and fog lamp and lights, it is luminous to be the circulation of speed of a motor vehicle display format with these many ring LED lamps, the speed of beating with conversion shows the speed of a motor vehicle size of this car, this speed of a motor vehicle display format is the light-emitting mode successively of ring in being changed to by outer shroud, also promptly be followed successively by the 6th ring, the 5th ring, the 4th ring, the 3rd ring, the 2nd ring, the 1st ring, recirculation is reciprocal, is the illumination effect of a ring ring ecto-entad transition generally;

Described display control switch includes analog signal amplifier, 2052AD chip T1 and with the leading foot SER of 2052AD chip T1, SCK1, the 74HC595 chip T2 that SCK2 links to each other, wherein, 2052AD chip T1 and 74HC595 chip T2 press braking strength display format and speed of a motor vehicle display format write-in program in advance, define each and introduce pin and leading foot, brake pressure sensor J3 links to each other with this analog signal amplifier, analog signal amplifier is common amplifying circuit, the concrete connection referring to shown in the frame of broken lines among Fig. 2, the output signal LOCK of this analog signal amplifier, also promptly through the brake pressure analog signal after amplifying, introducing pin with LOCK among the 2052AD chip T1 links to each other and is sent among the 2052AD chip T1,2052AD chip T1 is a digital signal with the brake pressure analog signal conversion, simultaneously, 2052AD chip T1 cooperates with 74HC595 chip T2, the many rings of control LED lamp is changed successively by the braking strength display format of setting and is circulated luminous, realize that LED dynamically shows, and wherein the inversion frequency of conversion luminescence depends on this digital signal, input end SA1～the SA6 of each ring LED lamp promptly links to each other with leading foot SA1～SA6 of this 74HC595 chip T2 accordingly in described many ring LED lamps, as shown in Figure 4 and Figure 5,8 LED work in the control chart 5;

The mouth of described speed sensor J2 directly links to each other with 2052AD chip T1, wherein 2052AD chip T1 is converted into digital signal with the analog signal of speed sensor J2, and the many rings of control LED lamps are changed successively by the speed of a motor vehicle display format of setting and are circulated luminous, realize that LED dynamically shows, and wherein the inversion frequency of conversion luminescence depends on that the analog signal of this speed sensor J2 transforms the digital signal that obtains, input end FA1～the FA6 of each ring LED lamp links to each other with corresponding leading foot FA1～FA6 among the 2052AD chip T1 respectively in described many ring LED lamps, as Fig. 3 and shown in Figure 5, control is arranged in 4 LED work on Fig. 5 left side;

And, the introducing pin 11 of described 2052AD chip T1,16 link to each other with fog lamp switch S2 with braking signal switch S1 respectively, under braking signal switch S1 closure state, 74HC595 chip T2 preferentially exports, S1 opens at braking signal switch, under the fog lamp switch S2 closure state, 2052AD chip T1 preferentially exports, like this, when braking signal switch S1 is closed, no matter fog lamp switch S2 is closed is not had not, and the display control switch preferentially many rings of control LED lamps shows the braking strength display format, opens and work as braking signal switch S1, when fog lamp switch S2 was closed simultaneously, display control switch was just controlled many ring LED lamps and is shown speed of a motor vehicle display format.

In the present embodiment, need the input voltage of two kinds of various components and parts work of confession of 12V and 5V, the VCC shown in the figure is 5V voltage, and the power supply J4 that can utilize automobile to carry produces 12V and 5V voltage, and concrete junction circuit as shown in Figure 6.

Claims

1. automobile tail light is characterized in that: include brake pressure sensor (J3), display control switch and be many ring LED lamps that the target shape distributes; Wherein, described brake pressure sensor (J3) links to each other with display control switch; This display control switch is a digital signal with the analog signal conversion of brake pressure sensor (J3), the many rings of this display control switch control simultaneously LED lamps are changed successively by the braking strength display format of setting and are circulated luminously, and wherein the inversion frequency of conversion luminescence depends on this digital signal; The input end of each ring LED lamp (SA1～SA6) link to each other with corresponding mouth in the described display control switch respectively in described many ring LED lamps.

2. automobile tail light according to claim 1 is characterized in that: the braking strength display format of described many ring LED lamps is the light-emitting modes by diffusion around the middle mind-set.

3. automobile tail light according to claim 1 and 2, it is characterized in that: described display control switch includes analog signal amplifier, 2052AD chip (T1) and the shift register 74HC595 chip (T2) that links to each other with 2052AD chip (T1), wherein, brake pressure sensor (J3) links to each other with this analog signal amplifier, and the output signal of analog signal amplifier promptly is sent in the 2052AD chip (T1), the input end of each the ring LED lamp (leading foot (SA1～SA6) link to each other of promptly corresponding and this 74HC595 chip (T2) of SA1～SA6).

4. automobile tail light according to claim 3, it is characterized in that: also include the speed sensor (J2) that mouth links to each other with described 2052AD chip (T1), wherein, 2052AD chip (T1) is converted into digital signal with the analog signal of speed sensor (J2), the many rings of this 2052AD chip (T1) control LED lamp is changed successively by setting speed of a motor vehicle display format and is circulated luminous, and wherein the inversion frequency of conversion luminescence depends on that the analog signal of this speed sensor (J2) transforms the digital signal that obtains, and, encircle in the LED lamp more each ring LED lamp input end (FA1～FA6) respectively with 2052AD chip (T1) in corresponding leading foot (FA1～FA6) link to each other.

5. automobile tail light according to claim 4, it is characterized in that: the introducing pin of described 2052AD chip (T1) links to each other with fog lamp switch (S2) with braking signal switch (S1) respectively, under braking signal switch (S1) closure state, the preferential output of 74HC595 chip (T2), open at braking signal switch (S1), under fog lamp switch (S2) closure state, the preferential output of 2052AD chip (T1).

6. automobile tail light according to claim 4 is characterized in that: the speed of a motor vehicle display format of described many ring LED lamps is light-emitting modes successively of ring in being changed to by outer shroud.