CN2149663Y

CN2149663Y - Traffic controlling signal arrangement

Info

Publication number: CN2149663Y
Application number: CN 93236216
Authority: CN
Inventors: 周凯林
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-02-08
Filing date: 1993-02-08
Publication date: 1993-12-15
Anticipated expiration: 2003-02-08

Abstract

The utility model relates to a traffic signal display screen which is characterized in that a dot array is formed by a plurality of arranged three-color light-emitting diodes, and the diode feet of the three-color light-emitting diodes are connected with a power amplifier controlled by a controller through a connector assemblies. The dot array is composed of an a segment, a b segment, a c segment, a d segment, an e segment, a f segment, a g segment, and a h segment, wherein, the a segment, the b segment, the c segment, the d segment, the e segment, the f segment, and the g segment, are form a seven-segment digitron, and the rest part of the dot array is the h segment. The original three signal lamps can be reduced to a signal screen by using the utility model, and meanwhile, the signal screen can also proceed with the inverse number timing when the signal is switched to remind the passing person. The whole signal screen is controlled by a single-chip computer, and is applied to each traffic intersection.

Description

Traffic controlling signal arrangement

The utility model relates to a kind of traffic signals indicating device.

Since the traffic lights appearance, continue to use incandescent lamp always light source is provided, with the method for red, yellow, green three look glass indication color, this type of device volume is big, and power consumption is high.In recent years, the signal lamp at the other dress of original red and green signals lamp count down timer occurred, though the prompting that provides signal lamp color to switch, the volume of signal lamp is more huge, and the also corresponding raising of cost has increased the consumption of the energy again.

The purpose of this utility model is to provide a kind of traffic signals screen that can show tristimulus signal in a signal screen.

The technical solution of the utility model is: the utility model is to rearrange dot matrix by a plurality of three-color LED light emitting diodes, and the pin of described three-color LED light emitting diode is connected with the power amplifier of being controlled by controller by connector.Each three-color LED light emitting diode is made up of a red light emitting diodes and a green LED; When the control red light emitting diodes was bright, this three-color LED light emitting diode took on a red color; When the control green LED was bright, it is green that this three-color LED light emitting diode is; When control green LED and red light emitting diodes were all bright, this three-color LED light emitting diode was orange-yellow.Red, orange, green three looks of dot matrix screen indication that principle thus, a plurality of three-color LED light emitting diodes of may command are formed, thus realize that a signal screen can indicate the purpose of three looks.

The utility model compared with prior art has following advantage:

1). the utility model is high-visible in 50 meters under natural light, can reach the light intensity of traffic signals pilot lamp requirement.

2). compare with incandescent light source, optical efficiency of the present utility model greatly improves, and under the same light intensity, energy consumption of the present utility model is 1/5th to 1/8th of an incandescent lamp.

3). be reduced to a display screen by original three signal lamps, the person's of passing by on one's way visual angle is concentrated, be difficult for taking sb's mind off sth.

4). because a plurality of three-color LED light emitting diodes can show uniform light, so the distribution of light of ejaculation is even, needn't be on the outer cup of light source spherical diffusing glass, and only need cover general plane flint glass.

5). existing three incandescent light source outsides are covered with red yellowish green trichromatism glass respectively, and light source of the present utility model need not be covered with look glass outward, so the red yellowish green trichromatism conversion is more clear.

6). the utility model is reduced to a screen by three original lamps, and volume, weight greatly reduce, the also corresponding reduction of the cost of annexes such as the peripheral structure spare of signal screen, support bar.

7). the utility model is formed a signal screen by a plurality of luminous points, so the fault of several luminous points can not influence the result of use of signal screen substantially.

The utility model will be further described below in conjunction with drawings and Examples:

Accompanying drawing 1 is the structural representation of signal screen of the present utility model.

Accompanying drawing 2 is the hardware block diagram of the employed control circuit of the utility model;

Accompanying drawing 3 is the amplification assumption diagram of a three-color LED light emitting diode in the accompanying drawing 1;

Accompanying drawing 4 is the power amplification unit connection synoptic diagram (a kind of connection of color in pen section) of the power amplifier in the accompanying drawing 6;

Accompanying drawing 5 is the circuit theory diagrams of the main control part in the accompanying drawing 2;

Accompanying drawing 6 is the circuit theory diagrams of the signal screen display part in the accompanying drawing 2;

Accompanying drawing 7 is the main program block diagram of one chip microcomputer;

Accompanying drawing 8 is a timer interrupt service subroutine block diagram;

The light source point connection synoptic diagram of accompanying drawing 9 for being comprised in a pen section colour bits in the accompanying drawing 1.

The utility model is to rearrange dot matrix by a plurality of three-color LED light emitting diodes, and the pin of described three-color LED light emitting diode is connected with the power amplifier of being controlled by controller by connector.Controller can be manually operated, computer-controlled, electronic equipment control.Adopt present embodiment one chip microcomputer and computer program control technology realize the control to the traffic signals screen.Referring to accompanying drawing 7, accompanying drawing 8.One chip microcomputer begins to carry out the zero clearing of RAM district from memory under program 0000H unit, the stack pointer program is set, then to each relevant I/O cause for gossip row initialization, to insert conventional operation parameter (totally six groups of the operational factors in the ROM district then, every group comprises color, mode, time) send into and specify in the RAM district, again first group time parameter in the RAM district is sent into timer, start serial port then, color in first group and mode data are sent.Show by string and translation interface.At this moment, the computer starting timer, the time constant according to inserting timer picks up counting, and drives timer simultaneously and interrupts.Owing to adopt static display mode, the traffic signals screen at each crossing will obtain stable demonstration this moment.Computing machine calls the keyboard trace routine when waiting for break period and arriving, if there is the situation of keyboard input information to occur, then according to the difference of institute's button, changes over to and respectively handle subroutine.Handle the scheme that subroutine comprises various operating schemes or operational factor is set voluntarily.Again new operational factor is replaced original operational factor, and bring into operation from first group of new parameter again.If the timer timing arrives, then computing machine changes break in service over to and handles subroutine, in interrupt service subroutine, computing machine closes timer earlier, close and interrupt, then first group of present parameter is placed on the bottommost of specifying in the RAM district, all the other respectively organize the parameter come-up once.And then first group of new parameter (second group of parameter originally) handled one time by original mode, opening timing device again, pick up counting and open and interrupt finishing to interrupt service routine, return original breakpoint place, carry out master routine, so go round and begin again, realize control demonstration time, color and the mode of traffic signals screen.Hardware is implemented referring to accompanying

drawing

2,3,4,5,6 and accompanying drawing 9.The one chip microcomputer chip adopts 8031 of MCS-51 series.This chip includes CPU, RAM, CTC and I/O mouth, needs external EPROM.EPROM employing capacity is 27128 of 16K, makes memory under program.Master routine and interrupt service subroutine promptly are documented in wherein.Address latch adopts 74LS373.8031,27128 and 74LS373 constitute the minimum system of an one chip microcomputer.Shift register 74LS164(1) with 8031 I/O mouth in P3.4, P3.5 constitute one 2 * 8 determinant keyboard circuit, 74LS164(1) as the key scanning delivery outlet, P3.4, P3.5 make the key incoming line, in order to discern different keyboard commands.Constitute one and door by 74LS00.8031 P3.3 is as the synchronizing pulse output control line.When computer operation in serial signal transmit status following time, the TXD line of main control part 8031 is sent synchronizing signal, sends through logical AND gate, the RXD line is sent data-signal.By 74LS164(2) 6 LED light emitting diodes of being administered will show the color and the time state of the traffic signals screen of crossing, north and south (controlling red, yellow, green three LED by D4～D6) and thing crossing (controlling red, yellow, green three LED of another group by D0～D2) respectively, give the control personnel with cue.MC3487(or 75175) be the RS422 standard signal sender interface chip that includes 4 groups of identical functions, the transmission coverage is 300 meters.Through MC3487 the RS422 level that Transistor-Transistor Logic level converts standard to is transmitted.For avoiding interference, transmission signal line shields.MC3486(or 75174) is the RS422 standard signal receiving interface chip that contains four groups of identical functions.Send to the signal of display part by MC3486(1 through transmission line) (or 75174) convert the standard Transistor-Transistor Logic level to.74LS164(3), (4), (5) are under the control of synchronizing signal, data-signal is converted from serial to parallel, and according to instruction, (D0～D7) is low level or high level state to the corresponding separately position of decision, and has determined that thus the triode in the power amplification unit is in conducting or cut-off state.The triode that is in conducting state will be lighted relevant pen section colour bits, thereby reaches the control signal purpose of screen Show Color, mode and time.Power amplifier is made up of 18 power amplification units, respectively called after a1 unit, a2 unit, b1 unit, b2 unit, c1 unit, c2 unit, d1 unit, d2 unit, e1 unit, e2 unit, f1 unit, f2 unit, g1 unit, g2 unit, h1 unit, h2 unit, h3 unit, h4 unit.Each power amplification unit is served as (see accompanying drawing 4, R1 is the base stage current-limiting resistance, and R2 is a collector load resistor) by positive-negative-positive triode 8550, and each power amplification unit is the low level conduction mode.See accompanying drawing 6, the base stage of each power amplification unit is connected to 74LS164(3 by current-limiting resistance), a certain pen section colour bits (a1, a2, b1, b2, c1, c2, d1, d2, e1, e2, f1, f2, g1, g2, h1, h2, h3, h4) among the D0～D7 in (4), (5), its collector is connected to the corresponding pen section colour bits that are made of light source point (a1 ', a2 ', b1 ', b2 ', c1 ', c2 ', d1 ', d2 ', e1 ', e2 ', f1 ', f2 ', g1 ', g2 ', h1 ', h2 ', h3 ', h4 ') by pull-up resistor simultaneously.Be saves energy, the light source point power supply of signal screen is provided by the power supply of one group of voltage for 2V, so that the power consumption that consumes at power amplification unit reduces to minimum.Signal screen is formed (seeing accompanying drawing 1) by 381 light source points.Each light source point includes the LED light emitting diode (seeing accompanying drawing 3) that can send red, green two kinds of Essential colour.Hot, green send when all lighting orange-yellow.Dot matrix can be for rectangle shape such as circular or square or ellipse, include seven segment digital tubes in the dot matrix.Accompanying drawing 1 is for including the rectangular lattice of a seven segment digital tubes, this dot matrix is divided into a section, b section, c section, d section, e section, f section, g section, eight parts of h section, wherein, a section, b section, c section, d section, e section, f section, g section are formed a seven segment digital tubes, and the remainder of dot matrix is the h section.This signal screen can show three kinds of colors: red, orange, green; Every kind of color has two kinds of display modes: eight sections complete bright, simulates the working method of existing traffic lights; Lighting relevant seven segment digital tubes countdowns.Two kinds of display modes of three kinds of colors can be switched at any time on request.The power supply ground that connects together and connect the display part referring to all light source point negative electrodes in 9, eight parts of accompanying drawing.The point of every rubescent look in a section connected together constitutes a1 ' in a section, and the point of green-emitting connects together, and constitutes a2 '.A1 ' connects the collector (through pull-up resistor) of a1 unit in the power amplifier, and a2 ' connects the collector (through pull-up resistor) of a2 unit in the power amplifier.H pen section is more because of light source point, so be divided into upper and lower two sections.All the other sections by that analogy.Each crossing generally has four signal screens at least, first signal screen receives one's own data message on the one hand, the data that will belong to other signal screen are simultaneously still passed through MC3487(2) be sent to second signal screen, second signal screen carries out similar processing to one's own data message, the signal that will belong to the 3rd, the 4th traffic signals screen simultaneously again sends, by that analogy.Because the processing speed that computing machine is exceedingly fast, the time difference that time-division processing is brought can be ignored fully, and therefore actual display effect will be demonstration or the switching that stipulate simultaneously at each crossing.

Claims

1, a kind of traffic signals screen, it is characterized in that: it is to rearrange dot matrix by a plurality of three-color LED light emitting diodes, the pin of described three-color LED light emitting diode is connected with the power amplifier of being controlled by controller by connector.

2, traffic signals screen according to claim 1 is characterized in that: include seven segment digital tubes in the described dot matrix.

3, traffic signals screen according to claim 2, it is characterized in that: dot matrix is made up of a section, b section, c section, d section, e section, f section, g section, h section; Wherein, a section, b section, c section, d section, e section, f section, g section are formed a seven segment digital tubes, and the remainder of dot matrix is the h section.