Unlock instant, AI-driven research and patent intelligence for your innovation.

No-communication-link road traffic signal countdown displayer and control method thereof

A traffic signal and communication link technology, which is applied in the control field of road traffic signal countdown display, can solve the problems that the display module cannot be closed immediately, traffic accidents, signal lights and countdown display are not synchronized, etc.

Inactive Publication Date: 2017-05-24
重庆攸亮科技股份有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When special services (such as ambulances and fire trucks pass through the intersection), the display pattern of the signal lights at the current intersection is changed through corresponding operations, and within an intersection cycle, the countdown display without communication links is still displayed according to the original display pattern Countdown, at this time, there will be a situation where the signal light and the countdown display are out of sync, which will cause confusion to drivers passing the intersection, and easily lead to misjudgment and traffic accidents
In order to avoid such confusion, it is necessary to immediately close the display module of the countdown display during special service, and the countdown display without a communication link cannot realize the immediate shutdown of the display module due to the lack of a communication link, which may cause traffic accidents

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • No-communication-link road traffic signal countdown displayer and control method thereof
  • No-communication-link road traffic signal countdown displayer and control method thereof
  • No-communication-link road traffic signal countdown displayer and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: as figure 2 The control method of the road traffic signal countdown display without communication link shown, the circuit structure of the road traffic signal control system it adopts (see figure 1 ) is an existing technology, the road traffic signal control system includes a traffic signal control machine 1, a countdown display 2 (a road traffic signal countdown display without a communication link) and signal lights (ie red light 3, yellow light 4, green light 5) The countdown display 2 is connected in parallel with the red light 3, the yellow light 4, and the green light 5 respectively, and is then jointly connected with the traffic signal controller 1. The countdown display 2 includes a switching power supply module 21, a display module 22, a detection module 23 and a control module 24, The switching power supply module 21 is connected with the traffic signal control machine 1, and the 220V alternating current output by the traffic signal control mach...

Embodiment 2

[0023] Embodiment 2: as image 3 In the control method of the road traffic signal countdown display without communication link shown, the circuit structure of the road traffic signal control system it adopts is the same as that of embodiment 1. The method for controlling a road traffic signal countdown display without a communication link by using the road traffic signal control system includes:

[0024] Step 1, the traffic signal control machine 1 normally outputs 220V AC power, which supplies power to the display module 22, detection module 23, and control module 24 through the switching power supply module 21, and the control module 24 controls the display module 22 to simultaneously display the current signal light (may be a red light , may also be yellow light, may also be the remaining time of green light).

[0025]Step 2: The traffic signal control machine 1 judges whether there is an operation to enter the secret service (the signal of this operation can be sent by th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a no-communication-link road traffic signal countdown displayer and a control method thereof. During a secret service, in the process where a traffic signals controller outputs a 220 V alternating current, two-time power-on pulses or two-time power-off pulses at an interval of a preset time are output to a control module of the countdown displayer to cut off the signal of a display module, and the control module turns off the display module when receiving the signal; and when the secret service ends, in the process where the traffic signals controller outputs the 220 V alternating current, one-time power-on pulse or one-time power-off pulse is output to the control module to enable the signal of the display module, and the control module turns on the display module when receiving the signal to display remaining time of a current signal lamp. The control method can reduce cost and simplify construction, and is of an important significance to control of traffic signals of constructed intersections having no communication links or incapable of arranging the communication links.

Description

technical field [0001] The invention belongs to the field of road traffic signal control, in particular to a control method for a road traffic signal countdown display without a communication link. Background technique [0002] The road traffic signal countdown display is used in conjunction with signal lights to synchronously display the remaining time of signal lights (that is, red lights, yellow lights, and green lights) to improve road traffic efficiency. When special services (such as ambulances and fire trucks pass through the intersection), the display pattern of the signal lights at the current intersection is changed through corresponding operations, and within an intersection cycle, the countdown display without communication links is still displayed according to the original display pattern Countdown, at this time, there will be a situation where the signal light and the countdown display are out of sync, which will cause confusion to drivers passing the intersect...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/096
CPCG08G1/096
Inventor 薛平戴高
Owner 重庆攸亮科技股份有限公司