CN205230351U - Street request button is crossed by people's bank of china - Google Patents

Abstract

The utility model provides a street request button is crossed by people's bank of china, adopts LED dot -matrix display screen to carry out street information display, including communication module, control module, display module, button module, communication module is used for realizing singlechip and traffic signal controller communication, control module comprises the AVR singlechip for acquire button state information and traffic signal controller's information, and then control the demonstration that the pedestrian crossed the street information, the display module mainly by go drive circuit, be listed as drive circuit and the display screen is constituteed for for providing directly perceived, abundant, the pedestrian crosses the street information, button module adopts contactless sealed proximity switch.

Description

A kind of pedestrian crossing request button

Technical field

The utility model relates to technical field of traffic signal control, specifically for the pedestrian crossing PBU pushbutton unit of a kind of information display that pedestrian's street crossing road section traffic volume controls.

Background technology

Along with urban motor vehicle recoverable amount and road traffic flow are in sudden and violent fried formula rapid growth, for ensureing people's livelihood safety, strengthening traffic dispersion, be embodied as urban transportation intellectuality, the input all increased Intelligent Transport Systems Construction in all parts of the country, road traffic signal control system becomes the most important thing.Based on the pedestrian's street crossing button unit of LED lattice display as novel traffic signal control system auxiliary equipment, street will be crossed for pedestrains safety and play effect of crucial importance.Street pedestrian's PBU pushbutton unit is generally arranged on flow of the people instability, crosses the section that street demand is special, as bus station, subway station, school, factory, hospital, home for destitute etc.Because existing street pedestrian's button does not mostly possess Presentation Function, can not provide directly perceived, abundant street information excessively, and volume is comparatively large, easily by artificial destruction, difficult in maintenance, maintenance cost is high; Some street pedestrian's PBU pushbutton unit feature richness, though there is voice messaging to point out, but be interfered owing to easily making voice messaging in the environment of noise and excitement, make information can not play indicative function clearly, and mostly need external power supply, cause cost higher, can not advantage have been given play to when special road section uses, often seem practical not.

Summary of the invention

The purpose of this utility model is to provide the pedestrian's street crossing button unit that a kind of LED of employing dot matrix display screen carried out street information displaying, quasi-solution determines existing pedestrian's street crossing button unit mostly without information displaying, or the defect of information deficiency, and by button state and communicate with traffic signal controlling machine in advance, the display of Chinese character and numerical information can be realized, the security of pedestrian's street crossing is improved.

The technical solution of the utility model is as follows:

A kind of pedestrian crossing request button, adopts LED dot matrix display screen to carry out street information displaying, it is characterized in that: comprise communication module, control module, display module, button module; Described communication module communicates with traffic signal controlling machine with described control module respectively; Described control module is electrically connected with described button module; Described display module comprises horizontal drive circuit, column drive circuit, and display screen, and described control module connects horizontal drive circuit and the column drive circuit of display module respectively, and drives display screen by described horizontal drive circuit and column drive circuit.

Described communication module adopts RS485 communication module, is made up of 75BC184 chip; Described control module adopts AVR single chip; 75BC184 chip A, B end of described communication module is connected with the communication interface of traffic signal controlling machine respectively, and transmitting terminal D and receiving end R is connected with control module respectively, realizes the communication of control module and traffic signal controlling machine.

What described button module adopted is contactless sealing proximity switch.

The utility model is the pedestrian crossing PBU pushbutton unit of a kind of information display, comprises RS485 communication module, control module, display module, button module; Described RS485 communication module is made up of 75BC184 chip, and the A of described 75BC184 chip, B end is connected with traffic signal controlling machine respectively, and transmitting terminal D and receiving end R is connected with single-chip microcomputer respectively, realizes the communication of single-chip microcomputer and traffic signal controlling machine; Described control module is made up of AVR single chip, controls the conversion that this device realizes garage, pedestrian signal lamp, and crosses the display of street information; Described display module is primarily of row, column driving circuit, and display screen composition, and described display screen is made up of 32 × 24LED dot matrix, can clearly show word and numeral, is the street information excessively that pedestrian provides intuitively, enriches; Described button module is made up of contactless sealing proximity switch, have the life-span long, flexibly, without features such as clamping stagnations.

Accompanying drawing explanation

Fig. 1 is structured flowchart of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model device is more specifically illustrated.

As shown in Figure 1, the utility model based on the pedestrian's street crossing button unit of LED lattice display by traffic signal controlling machine 1, communication module 2, control module 3, display module 4, button module 5 forms; Display module 4 comprises horizontal drive circuit 41, display screen 42, column drive circuit 43.

Described communication module 2 adopts RS485 communication module, is made up of 75BC184 chip; Control module 3 adopts AVR single chip.The 75BC184 chip transmitting terminal D of communication module 2 and receiving end R is connected with TXD with RXD of control module 3AVR single-chip microcomputer respectively, 75BC184 chip differential signal A, B end of communication module 2 is connected with traffic signal controlling machine 1 respectively, communication module 2 realizes the communication of control module 3 single-chip microcomputer and traffic signal controlling machine 1 by half-duplex mode, thus controls traffic lights.Control module 3 communicates with button module 5; Control module 3 single-chip microcomputer connects horizontal drive circuit 41 and the column drive circuit 43 of display module 4 respectively, and drives display screen 42 by horizontal drive circuit 41 and column drive circuit 43.

After control module 3 communicates with traffic signal controlling machine 1, obtain traffic signal light condition, start timing by timing module, simultaneously by control lines driving circuit and column drive circuit, driving LED dot matrix display screen, demonstrates character reminding information and count down time.Horizontal drive circuit selects 74HC4953 by 74HC138 chip by sheet, thus the state of LED on scan line, column drive circuit primarily of 12 seal in/and go out chip 74HC595 and be composed in series, thus control the LED state on display screen row.

The utility model is not when holding state (namely pressing the button), and now garage's signal lamp is green light, and pedestrian signal lamp is red light, and display screen display " is crossed street and asked button ", shows current time simultaneously; After a button pressed, display screen display " please wait for ", and enter number of seconds countdown display; After having waited for, now garage's signal lamp is converted to red light by green light, and pedestrian signal lamp is converted to green light by red light, and display screen display " please pass through " and number of seconds countdown display, understand fast blink when entering last 6 seconds." please pass through " complete after enter holding state again, now garage's signal lamp becomes green light again, and pedestrian signal lamp becomes red light.

The utility model can adopt the LED dot matrix display screen of 32 × 24, has 768 pixels, can Display of Chinese characters and numeral, and screen size is 82mm*61mm; Display screen adopts the red LED of Φ 1.9, and color is eye-catching, the mellow and full grace of stroke, brightness are high, even if also very clear under daylight environment.

Based on the pedestrian's street crossing button unit of LED lattice display, adopt contactless sealing proximity switch, have the life-span long, flexibly, without features such as clamping stagnations; Shell adopts die casting aluminium, the feature such as have dust-proof, rainproof, anticorrosion, shatter-resistant, sturdy and durable, antijamming capability is strong.

Claims (3)

1. a pedestrian crossing request button, adopts LED dot matrix display screen to carry out street information displaying, it is characterized in that: comprise communication module, control module, display module, button module; Described communication module communicates with traffic signal controlling machine with described control module respectively; Described control module is connected with described button module point; Described display module comprises horizontal drive circuit, column drive circuit, and display screen, and described control module connects horizontal drive circuit and the column drive circuit of display module respectively, and drives display screen by described horizontal drive circuit and column drive circuit.

2. pedestrian crossing request button according to claim 1, is characterized in that: described communication module adopts RS485 communication module, is made up of 75BC184 chip; Described control module adopts AVR single chip; 75BC184 chip A, B end of described communication module is connected with the communication interface of traffic signal controlling machine respectively, and transmitting terminal D and receiving end R is connected with control module respectively, realizes the communication of control module and traffic signal controlling machine.

3. pedestrian crossing request button according to claim 1, is characterized in that: what described button module adopted is contactless sealing proximity switch.