CN2766301Y

CN2766301Y - Traffic signal control device capable of count-down

Info

Publication number: CN2766301Y
Application number: CN 200520100719
Authority: CN
Inventors: 陈琳; 郑伟华; 胡立平
Original assignee: 陈琳
Priority date: 2005-03-01
Filing date: 2005-03-01
Publication date: 2006-03-22
Anticipated expiration: 2015-03-01

Abstract

The utility model a traffic signal control device which can count down. The utility model comprises a traffic signal display part (1), a count-down control part (2) and a traffic signal control part (3), wherein the traffic signal display part (1) is composed of a light emitting diode (LED) (5) array. The utility model is characterized in that the light emitting diode (LED) (5) array is composed of light emitting diodes (LED) with red, yellow and green colors; two '8' are formed by the light emitting diodes (LED) with red and green colors, and are arranged at the center of a signal display panel of the traffic signal display part (1), and the yellow light emitting diodes (LED) are distributed over the remaining areas; the light emitting diodes (LED) with red and green colors are controlled by the count-down control part (2) in a point-by-point mode, and the yellow light emitting diodes (LED) are controlled by the traffic signal control part (3); the count-down control part (2) is controlled by the traffic signal control part (3). The utility model has the advantages of simple structure, convenient operation, visual and obvious displayed signals and low equipment cost.

Description

But a kind of traffic-control unit of countdown

Technical field

The utility model relates to a kind of control device, but particularly a kind of traffic-control unit of countdown.

Background technology

Existing traffic-control unit is red, green, yellow coston light, the traffic signals that this traffic-control unit shows obviously, intuitively, but can not show the time interval that is carved into next signal transformation when a certain in real time, driver and pedestrian can only lean on the time of experience estimation signal transformation, often rob and make a dash across the red light owing to irritability or idea of leaving things to chance, make traffic intersection crowded, even lead to traffic hazard, this situation is particularly outstanding when the wagon flow peak traffic.For addressing this problem, the traffic intersection that some is busy, existing every group red, green, on the yellow coston light traffic-control unit, add a cover traffic signals time display apparatus, red at every turn, green, during the amber light conversion, the traffic signals time display apparatus can be shown to the time interval of next signal conversion automatically respectively with the setting of traffic-control unit, but this scheme needs the traffic signals time display apparatus will be added on original traffic-control unit, make traffic-control unit seem huge, particularly craspedodrome is being arranged, turn left, the heavy traffic crossing of turning right, it is more burdensome that this device seems, two covering devices add together, and are not only bulky, and cost height.

Summary of the invention

But the purpose of this utility model is to provide a kind of traffic-control unit of countdown, by on the brown flasher display board, increase by two red, green double-colored light emitting diodes of " 8 " word (LED), and increase control red, green double-colored light emitting diode (LED) countdown control section, Huang sudden strain of a muscle and countdown are shown that being combined in an original Huang dodges on the display board, this traffic-control unit both can show the countdown signal, can show yellow glitch again, the signal of demonstration is directly perceived, traffic-control unit is light and handy, simple.

The utility model is to achieve the above object by the following technical programs: but a kind of traffic-control unit of countdown, comprise traffic signals display part 1, countdown control section 2, traffic signals control section 3, traffic signals display part 1 is made of light emitting diode (LED) 5 arrays, it is characterized in that, light emitting diode (LED) array is by red, yellow, the light emitting diode of green three kinds of colors (LED) 5 constitutes, red, green double-colored light emitting diode (LED), form two " 8 " words, be arranged on the central authorities of the indicator panel of traffic signals display part, yellow light-emitting diode (LED) is distributed in remaining area, red, green double-colored light emitting diode (LED) is controlled by 2 pointwises of countdown control section, yellow light-emitting diode (LED) is by 3 controls of traffic signals control section, and countdown control section 2 is by 3 controls of traffic signals control section.

Described countdown control section is made up of signal input unit, central control unit, clock generation module, signal lamp driver element, central control unit is connected with signal input unit, clock generation module, signal lamp driver element respectively, signal input unit is subjected to 3 controls of traffic signals control section, signal input unit is transferred to the signal lamp driver element by control module after producing signal, and is luminous by the red or green light emitting diode of signal lamp drive unit drives (LED).

The CPU of described central control unit is one 8 a 89C51 processor 10.

Described clock generation module comprises clock generator 6, quartz oscillator 7, electric capacity 8, power supply 9, wherein the clock source in the clock generator 6 is set to the sheet internal oscillator, power supply 9 is powered to clock generator, quartz oscillator 7 inserts at clock generator 6 two ends, insert electric capacity 8 between clock generator 6 and the ground, clock chip is kept in power supply.

Described signal lamp driver element adopts two ULN2803 to drive.

The beneficial effects of the utility model are simple in structure, and signal easy to use, that show is intuitive, clear, and equipment cost is low.

Description of drawings

Fig. 1 is a principle of work block diagram of the present utility model;

Fig. 2 is the circuit diagram of clock generation module of the present utility model;

Fig. 3 is the structural representation of the utility model display board.

Embodiment

The utility model is further elaborated by embodiment below in conjunction with accompanying drawing 1, Fig. 2 and Fig. 3:

Embodiment: as Fig. 1, Fig. 2 and shown in Figure 3, but the traffic-control unit of a kind of countdown that the utility model provides, comprise traffic signals display part 1, countdown control section 2, traffic signals control section 3, traffic signals display part 1 is made of light emitting diode (LED) 5 arrays, it is characterized in that, light emitting diode (LED) array is by red, yellow, the light emitting diode of green three kinds of colors (LED) 5 constitutes, red, green double-colored light emitting diode (LED), form two " 8 " words, be arranged on the central authorities of the indicator panel of traffic signals display part, yellow light-emitting diode (LED) is distributed in remaining area, red, green double-colored light emitting diode (LED) is controlled by 2 pointwises of countdown control section, yellow light-emitting diode (LED) is by 3 controls of traffic signals control section, countdown control section 2 is by signal input unit, central control unit, clock generation module, the signal lamp driver element is formed, central control unit respectively with signal input unit, clock generation module, the signal lamp driver element connects, signal input unit is subjected to 3 controls of traffic signals control section, signal is through the signal input unit constant current, import central control unit into after voltage stabilizing and the filtering, the core of central control unit is one 8 a 89C51 processor 10, behind the signal that the signal input unit of receiving central control unit transmits, pass to clock generation module earlier, produce clock pulse signal, feed back to central control unit again, produce control signal by central control unit and pass to the signal lamp driver element, red by the signal lamp drive unit drives at last, green double-colored light emitting diode (LED) is luminous, and yellow light-emitting diode (LED) is then directly controlled by the signal that traffic signals control section 3 produces.Clock generation module comprises clock generator 6, quartz oscillator 7, electric capacity 8, power supply 9, wherein the clock source in the clock generator 6 is set to the sheet internal oscillator, power supply 9 is powered to clock generator, quartz oscillator 7 inserts at clock generator 6 two ends, insert electric capacity 8 between clock generator 6 and the ground, clock chip is kept in power supply.In the signal lamp driver element, we have abandoned a large amount of transistor drive work mode in original common countdown control circuit, and adopt two ULN2803 to drive, so, in case cause the abnormal situation of countdown work to stop substantially owing to single transistor damages; Concerning the signal lamp driver element, the reliability of its work will be multiplied.

Claims

1, but a kind of traffic-control unit of countdown, comprise traffic signals display part (1), countdown control section (2), traffic signals control section (3), traffic signals display part (1) is made of light emitting diode (LED) (5) array, it is characterized in that, light emitting diode (LED) (5) array is by red, yellow, the light emitting diode of green three kinds of colors (LED) constitutes, red, green double-colored light emitting diode (LED), form two " 8 " words, be arranged on the central authorities of the indicator panel of traffic signals display part (1), yellow light-emitting diode (LED) is distributed in remaining area, red, green double-colored light emitting diode (LED) is controlled by countdown control section (2) pointwise, yellow light-emitting diode (LED) is by traffic signals control section (3) control, and countdown control section (2) is controlled by traffic signals control section (3).

2, but the traffic-control unit of countdown according to claim 1, it is characterized in that, described countdown control section (2) is by signal input unit, central control unit, clock generation module, the signal lamp driver element is formed, central control unit respectively with signal input unit, clock generation module, the signal lamp driver element connects, signal input unit is subjected to traffic signals control section (3) control, signal input unit is transferred to the signal lamp driver element by control module after producing signal, and is luminous by the red or green light emitting diode of signal lamp drive unit drives (LED).

3, but the traffic-control unit of countdown according to claim 2 is characterized in that, the CPU of described central control unit is one 8 a 89C51 processor (10).

But 4, the traffic-control unit of countdown according to claim 3, it is characterized in that, described clock generation module comprises clock generator (6), quartz oscillator (7), electric capacity (8), power supply (9), wherein the clock source in the clock generator (6) is set to the sheet internal oscillator, and power supply (9) is given clock generator

(6) power supply, quartz oscillator (7) inserts at clock generator (6) two ends, inserts electric capacity (8) between clock generator (6) and the ground, and clock chip is kept in power supply.

5, but the traffic-control unit of countdown according to claim 2 is characterized in that, described signal lamp driver element adopts two ULN2803 to drive.