CN201638395U - Dot-matrix LED driving countdown timer - Google Patents
Dot-matrix LED driving countdown timer Download PDFInfo
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- CN201638395U CN201638395U CN2010201740087U CN201020174008U CN201638395U CN 201638395 U CN201638395 U CN 201638395U CN 2010201740087 U CN2010201740087 U CN 2010201740087U CN 201020174008 U CN201020174008 U CN 201020174008U CN 201638395 U CN201638395 U CN 201638395U
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Abstract
The utility model relates to a dot-matrix LED driving countdown timer comprising a tank boy, a master control unit and a dot-matrix LED display screen. The master control unit comprises a voltage converting module, a control module, a communication module and a driving module. As the display screen of the dot-matrix LED driving countdown timer comprises LED pixel dots in array arrangement, compared with the traditional seven-section digital display, the display screen can display digits as well as characters; the displayed digits or characters have smooth and evasive, graceful and clear strokes and high luminance; as the LED display screen adopts the design of a packaged insulation layer, the waterproofing capacity and the dustproof capacity of the LED display screen are improved; the dot-matrix LED driving countdown timer is connected with a traffic signal lamp in parallel to ensure that control signals outputted to the traffic signal lamp by a traffic signal controller are used as working power supplies of the countdown timer as well as triggering signals of the countdown timers, so that a power supply and a signal cable need not to be laid between the dot-matrix LED driving countdown timer and the traffic signal lamp, thereby the dot-matrix LED driving countdown timer has expense saving and convenient installation.
Description
Technical field
The utility model belongs to traffic lights control technology field, is specifically related to a kind of dot matrix LED garage count-down device that is used for intelligent transportation system (ITS).
Background technology
In a lot of large, medium and small cities traffic lights are installed all, at these grade crossing of traffic lights is installed, traffic lights LED garage count-down device generally all is installed, its main effect is the excess time that current traffic lights are provided to motor vehicles, improve the vehicle launch reaction velocity and remind in good time and stop, can greatly improve traffic environment and reduce traffic hazard.
The deficiency that tradition garage count-down device exists:
On the one hand: traditional garage's count-down device adopts the direct method of supplying power to of alternating current 220V power supply, must can provide the equipment of power supply to lay power cable to garage's count-down device of grade crossing all directions from traffic signal controlling machine or other in the process of installing; For the operate as normal of control garage count-down device, also need lay the control signal corresponding cable.Because traffic signal controlling machine or other can provide the equipment of power supply generally far away apart from garage's count-down device, this just needs to lay a large amount of cables, has promptly increased cost, and also inconvenience is installed.
On the other hand: the display of traditional garage's count-down device is seven segments numerical display mostly, and it is made up of seven segmentation LED, utilizes the various combination of field, can show ten numerals of 0～9 respectively.This cost is low, control is simple, and seven traditional segmentation LED garage count-down devices are commonly used.
Raising along with Chinese economic development and technology, a kind of novel, hommization, stroke grace, dot matrix LED garage count-down device high-visible, high brightness arise at the historic moment, it not only can show ten numerals of 0～9, can also show literal such as road prompting and caveat.
Summary of the invention
The purpose of this utility model is to optimize traditional garage's count-down device, and a kind of attractive in appearance, pleasant, energy savings, long service life, novel garage count-down device easy for installation are provided.
Implementation of the present utility model is as follows:
A kind of dot matrix LED garage count-down device, comprise casing, main control unit and dot matrix LED display screen, described main control unit and described dot matrix LED display screen are installed in the described casing, the control signal that traffic signal controlling machine outputs to traffic lights inserts described main control unit, as the working power and the trigger pip of described count-down device, described main control unit control also drives dot matrix LED display screen demonstration garage's countdown time;
Described main control unit includes voltage transformation module, control module and driver module; Described voltage transformation module connects the output signal of traffic signal controlling machine, the control signal that traffic signal controlling machine is outputed to traffic lights converts to+and the DC voltage of 5V is the count-down device power supply of dot matrix LED garage, and utilize the height of this voltage to change the triggering that realizes countdown; Voltage transformation module is connected with control module, and control module is delivered to driver module with the countdown time and carried out reading scan, makes it demonstrate garage's countdown time on dot matrix LED display screen.
Described voltage transformation module with traffic signal controlling machine output to traffic lights control signal (～220V) convert to+DC voltage of 5V, working power as dot matrix LED garage count-down device, the module of Access Control is simultaneously carried out countdown, and light dot matrix LED display screen by driver module, demonstrate the countdown time; Control module is made up of the Atmega8 single-chip microcomputer and the corresponding software of the AVR series that atmel corp produces, and used Atmega8 single-chip microcomputer has hardware circuits such as multi-channel a/d converter, real-time clock and serial line interface, and cheap; The software section of control module comprises control and data processing two parts.
Described row's car formula LED garage count-down device adopts power supply indirectly and from triggered mode of operation (during as communication cable, directly reference mark array type LED garage count-down device work), from traffic signal controlling machine output to traffic lights red, yellow, green light three tunnel control signals (～obtain the working power of garage's count-down device 220V), simultaneously also as the trigger pip of countdown.Owing to directly obtain the trigger pip of working power and countdown from traffic lights, make it between dot matrix LED garage's count-down device and traffic control signal machine, do not need to lay separately power supply and signal cable, so both saved expense, be convenient to again install.
The software section control ATmega8 single-chip microcomputer of control module is gathered red, yellow, the Lv Sanlu+5V d. c. voltage signal through voltage transformation module output circularly, after the ATmega8 single-chip microcomputer is handled, light dot matrix LED display screen by driver module and show the countdown time one by one degressively.
Described main control unit also comprises communication module, described communication module is connected with traffic signals control signal machine, when being equipped with communication cable, by traffic signals control signal machine through communication module, through control module and driver module, reference mark array type LED garage count-down device is worked again.
Dot matrix LED display screen is formed by 9 * 16LED pixel array by two, can show a two digits or a Chinese character (road is reminded and the caution phrase can adopt the circulation display mode) simultaneously.Each pixel of dot matrix LED display screen is made of a red LED and a green LED.During display digit, the bits per inch word is by 8 * 16 pel array distribute (leave two row pixels, make two digits separately, be convenient to watch) between the two digits; When showing Chinese character, each Chinese character distributes by 16 * 16 pel array.
Described dot matrix LED display screen is as the display screen of garage's count-down device, overcome the shortcoming that traditional garage count-down device can not show road and traffic alarm language (Chinese character), makes it both can display digit, can show Chinese character again.Just can demonstrate various Chinese characters as long as change corresponding demonstration Chinese character information, for example: can singlely show Chinese characters such as " slowly ", " stopping ", demonstration also capable of circulation " is taken their own roads " etc., and road is reminded and the caution phrase, and the numeral that shows and text color is eye-catching, the slick and sly grace of stroke, brightness height.
The utility model designs the functions of waterproof and dustproof of dot matrix LED garage count-down device, its scheme be irritate at the circuit board upper surface of welding LED pixel have between one deck complete covering board surface and the circuit board, the packaging insulating layer of all slits and LED bottom 2/3 between circuit board and the casing, the packaging insulating layer is two component normal-temperature curing epoxy Embedding Materials, is the black solid crystalline lens after the last moulding.This packaging insulating layer makes the front of whole LED display screen only have the light-emitting area of LED to contact with external environment.Like this, the globality of strengthening electronic device significantly, raising is to the resistivity of external shock, vibrations, improve the insulating property between element, the circuit simultaneously, avoid element, circuit etc. to be directly exposed in the external environment, greatly improved the waterproof and dustproof ability of dot matrix LED display screen.
In addition, above the casing of dot matrix LED display screen light shield has been installed, the direct irradiation that can effectively keep the sun off significantly reduces the luminous influence to the LED pixel, thereby improves the demonstration contrast of LED display, improves display effect.
Advantage of the present utility model is: dot matrix LED garage count-down device is in parallel with traffic lights, make traffic signal controlling machine output to the control signal of traffic lights, it promptly is the working power of count-down device, it also is the trigger pip of countdown, make it between dot matrix LED garage's count-down device and traffic control signal machine, do not need to lay separately power supply and signal cable; Dot matrix LED display screen is by forming by the equally distributed LED pixel of array, and it is evenly attractive in appearance to demonstrate color, caution literal such as countdown numeral that the slick and sly grace of stroke, sharpness and brightness are high and road prompting; After adopting the design of packaging insulating layer, improved the waterproof and dustproof ability of garage's dot matrix LED display screen; The back side design of casing has quick mounting structure, makes things convenient for the installation with different lamp stand supports.
Description of drawings
Fig. 1 is the theory diagram of dot matrix LED garage count-down device;
Fig. 2 is a dot matrix LED garage count-down device front elevation;
Fig. 3 is a dot matrix LED garage count-down device side view;
Fig. 4 is a dot matrix LED garage count-down device rear view;
Fig. 5 is control and data processing software process flow diagram.
Embodiment
Below in conjunction with accompanying drawing the technical solution of the utility model is described in further detail.
Fig. 1 is the theory diagram of dot matrix LED garage count-down device.The working power of dot matrix LED garage count-down device be by red, yellow, green three tunnel control signals that are connected in parallel on traffic lights (～220V) obtain, after voltage transformation module rectification, filtering and voltage stabilizing, obtain red, yellow, green three road stable+5V DC voltage, realize countdown by control module again, by control module the countdown data are sent to driver module at last, on dot matrix LED display screen, finish the demonstration of countdown.Concrete workflow following (is example with the red signal): energising start, the traffic signal controlling machine point sends out a warning, red light acquisition control signal (～220V), be connected in parallel on simultaneously dot matrix LED garage count-down device on the red light also obtain control signal (～220V), convert to+d. c. voltage signal of 5V through voltage conversion circuit, be input to control module (ATmega8 single-chip microcomputer); Detect red, yellow, green light three tunnel control voltage signals circularly by the ATmega8 single-chip microcomputer, so when the control voltage signal of red light arrives, control module just can detect corresponding signal, finishes obtaining of signal, and the internal clocking of ATmega8 single-chip microcomputer picks up counting simultaneously; By the time after the control signal of red light finished, the internal clocking timing stopped, and preserves the countdown time of this time as red light; So far, dot matrix LED garage count-down device " self study " process after the start is finished.Adopt the countdown time of preserving green light in the same way.Steady yellow then shows the countdown time in 3 seconds or shows literal such as road prompting and caution in this way.After this, along with the control signal cyclical variation of the red, green, yellow lamp of traffic signal controlling machine, dot matrix LED garage count-down device all shows by the countdown time red, green light of having preserved, up to the outage shutdown.Communication module, can be worked by the direct reference mark of traffic control signal machine array type LED garage count-down device when being equipped with communication cable as standby.
Fig. 2 is a dot matrix LED garage count-down device front elevation.The size of LED dot matrix count-down device is 630mm*530mm.LED dot matrix count-down device is made up of light shield 1, casing 2, dot matrix LED display screen 3, wherein dot matrix LED display screen 3 is made up of two 9 * 16 LED pixel array 4 and 5, and each LED pixel wherein is made of a red LED and a green LED.
Fig. 3 is a dot matrix LED garage count-down device side view.The thickness of LED dot matrix count-down device is 360mm, and wherein casing 2 is 80mm; Erecting frame 4 is 110mm, and light shield 1 is 170mm; The height of light shield 1 is 185mm, and this will adjust the cover of light shield along thickness according to the lighting angle in each city.As in Chongqing City, light shield top is 170mm, and when the bottom was 23mm, the effect of shading was best.
Fig. 4 is a dot matrix LED garage count-down device rear view.5 screws are respectively arranged on the erecting frame 4, select different screwhole positions just can on various lamp stand support, install quickly and easily.
Fig. 5 is control and data processing software process flow diagram.At first be to power on and initialization, begin then to detect circularly whether red, yellow, green light signals arrival is arranged.If there is signal to arrive, judgement is red light, amber light or green light signals.If red light or green light signals judge then whether corresponding countdown buffer zone has been preserved the countdown time.If do not have, just calculate, preserve the countdown time; If preserve the countdown time, the time of having preserved in countdown time that this obtains and the buffer zone is asked on average, then the data of countdown buffer zone is carried out reading scan.If steady yellow, judgement are the countdown time that showed for 3 seconds, still show road prompting and caveat literal, carry out reading scan then.Return after having scanned, continue to detect whether red, yellow, green signal is arranged, constantly repeat above processing procedure, until the outage shutdown.
Claims (4)
1. dot matrix LED garage count-down device, comprise casing, main control unit and dot matrix LED display screen, it is characterized in that: described main control unit and described dot matrix LED display screen are installed in the described casing, the control signal that traffic signal controlling machine outputs to traffic lights inserts described main control unit, as the working power and the trigger pip of described count-down device, described main control unit control also drives dot matrix LED display screen demonstration garage's countdown time;
Described main control unit includes voltage transformation module, control module and driver module; Described voltage transformation module connects the output signal of traffic signal controlling machine, the control signal that traffic signal controlling machine is outputed to traffic lights converts to+and the DC voltage of 5V is the count-down device power supply of dot matrix LED garage, and utilize the height of this voltage to change the triggering that realizes countdown; Voltage transformation module is connected with control module, and control module is delivered to driver module with the countdown time and carried out reading scan, makes it demonstrate garage's countdown time on dot matrix LED display screen.
2. dot matrix LED according to claim 1 garage count-down device, it is characterized in that: described main control unit also comprises communication module, described communication module is connected with traffic signals control signal machine, when being equipped with communication cable, by traffic signals control signal machine through communication module, through control module and driver module, reference mark array type LED garage count-down device is worked again.
3. dot matrix LED according to claim 1 and 2 garage count-down device is characterized in that: light shield is installed in the front upper place of described casing, and its back side erecting frame is provided with the screw of installing with the lamp stand support.
4. dot matrix LED according to claim 3 garage count-down device, it is characterized in that: described dot matrix LED display screen is by forming by the equally distributed LED pixel of array, and each LED pixel is made of a red LED and a green LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201740087U CN201638395U (en) | 2010-04-28 | 2010-04-28 | Dot-matrix LED driving countdown timer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201740087U CN201638395U (en) | 2010-04-28 | 2010-04-28 | Dot-matrix LED driving countdown timer |
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| CN201638395U true CN201638395U (en) | 2010-11-17 |
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| CN2010201740087U Expired - Fee Related CN201638395U (en) | 2010-04-28 | 2010-04-28 | Dot-matrix LED driving countdown timer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102521994A (en) * | 2011-11-30 | 2012-06-27 | 中盟智能科技（苏州）有限公司 | Method for state sharing of signal lamp and all-in-one machine |
| CN102750831A (en) * | 2011-04-19 | 2012-10-24 | 上海交大高新技术股份有限公司 | Road traffic signal countdown displaying device |
| CN103985266A (en) * | 2014-05-09 | 2014-08-13 | 刘毅 | Dynamic traffic signal lamp and display method thereof |
-
2010
- 2010-04-28 CN CN2010201740087U patent/CN201638395U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102750831A (en) * | 2011-04-19 | 2012-10-24 | 上海交大高新技术股份有限公司 | Road traffic signal countdown displaying device |
| CN102521994A (en) * | 2011-11-30 | 2012-06-27 | 中盟智能科技（苏州）有限公司 | Method for state sharing of signal lamp and all-in-one machine |
| CN103985266A (en) * | 2014-05-09 | 2014-08-13 | 刘毅 | Dynamic traffic signal lamp and display method thereof |
| CN103985266B (en) * | 2014-05-09 | 2017-06-09 | 天津城建大学 | A kind of dynamic traffic signal lamp and its display methods |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20150428 |
|
| EXPY | Termination of patent right or utility model |