WO2004044864A1

WO2004044864A1 - A road preparing system and a roadway control light

Info

Publication number: WO2004044864A1
Application number: PCT/CN2003/000890
Authority: WO
Inventors: Shijin Nie
Original assignee: Shijin Nie
Priority date: 2002-11-13
Filing date: 2003-10-23
Publication date: 2004-05-27
Also published as: AU2003275524A1

Abstract

The invention relates to a road preparing system. The system includes a road preparing control system and a preparing zone in which the control system is set . The road preparing control system includes a main controller and external bus, the preparing zone is set on the road surface of a city crossing. There are signal lights which can indicate roadways in the preparing zone, the main controller is connected with the signal lights by the external bus. The invention also relates to a roadway control light. The light includes a external housing, light holder and light surface, wherein the external housing is connected with the light holder, the light surface is in the external housing. There are light emitting units in the light surface. The said light surface displays at least one of phase signs, which are left turning , straight going and right turning, respectively, according to a predetermined time program. Each said phase sign can display different work states with three colours, that is red, yellow and green, respectively.

Description

Road deployment system and lane dispatching light

Technical field

The present invention relates to a road allocation system and a lane dispatching light, and more particularly, the present invention relates to an urban road allocation system and a three-phase lane dispatching light, which are matched with a crossing traffic command. BACKGROUND-For a long time, the signal lights of urban road crossings have been composed of three lights (ie, three light surfaces). The signal lights are set independently from left to right or up, middle and down. Each lamp has one of the three functions of direct direction, left turn or right turn according to the setting of the lane. If you want to change the direction and make the lane flexible dispatch command, you need to add the corresponding signal lights according to the required function. For example, if each lane has the function of going straight, turning left, or turning right, three lanes of lights need to be set in a lane, so that the original three sets of lights will form nine lights from left to right, which form a group of signal lights. ". Not only are they costly, they are composed of a large number of signal lights. Different positions, different phases, and different color changes cause serious visual interference to the driver's instant recognition, which brings hidden dangers. It also greatly affects the efficiency of regional dispatching.

The urban traffic roads that match the existing signal lights are divided into straight and reverse, and three types of marking lines, such as straight, left or right, are set in advance of the crossing stop line, and act under the direction of the signal lights. The disadvantage of this system is that the management of crossings is mechanized, and the three different directions of going straight, turning left, or turning right interfere with each other. Road resources cannot be fully utilized, and road congestion often occurs. _

In order to solve the above problems, Chinese patent application 97115854. 1 discloses a traffic management system for a level crossing at an urban road, which is composed of control and signaling devices. The signaling device includes a command signal light. The command signal parking line III is located on the controlled crossing. It is a set of grouping signal lights that also have three sign signals of turning left, going straight and turning right, and work in parallel with the command signal lights. Corresponding to each crossing command signal, there are grouping lights II and I, and the corresponding grouping parking lines II and I are in On the road surface corresponding to the controlled crossing, from the command signal stop line III, it is set from near to far. The invention can greatly improve the working efficiency of crossings and reduce traffic congestion. The investment is small and the effect is significant. ·

Chinese patent application 981213264. 7 discloses a traffic dispatching and shunting method for urban road level crossings and a management device thereof. It pushes out a distance of 40 meters or less at the intersection parking line, delimits the borrow line, and then borrows the borrow line. The lane area is divided into three lanes. The middle lane is used as the dispatch lane. The left and right sides are lanes. The parking line is moved forward by more than 3 parking spaces, and the crossing parking area is drawn by the lane extension line; a set of direction signal lights with directional arrows is set in front of the crossing parking line, waiting for the motor vehicle to press left, straight, and right again Sequentially, see the signal on the direction signal to enter the parking space in the crossing parking area, and divert according to the stop signal. The entire procedure works symmetrically. The operation mode is to turn right from east to west when you turn left from north to south, and from east to west, you will go straight from the north to south A small light is added to the signal light. When the pedestrian signal light is green, the small light is red to control the non-motorized vehicle. Move the non-motorized vehicle parking line at the crossing forward, and install the non-motorized signal light at the crossing. It can effectively solve the problems of traffic jams in existing traffic, long cycle cycles, many collision points for motor vehicles and non-motor vehicles, and difficulty in pedestrian crossing.

However, none of the above methods or devices fundamentally change the existing traffic congestion problem, so the existing roads cannot be used to the greatest extent, saving time and making traffic smooth. Summary of the Invention

The purpose of the present invention is to provide a road allocation system, which can implement lane changing command of lanes in combination with lane scheduling lights, overcome the shortcomings of fixed road functions, and make full use of existing resources of urban roads to make each The lanes can be more fully utilized, improve the traffic capacity of the road, improve the traffic efficiency of vehicles at the crossing, and solve the problem of road congestion.

Another object of the present invention is to provide a lane dispatching light, which sets the directions of multiple directions as an independent light surface, so that the dispatching light can display at least two colors and directions at the same coordinate position, so that The signal display not only has the effect of intuitive and instant recognition, but also has the characteristics of simple structure and easy installation, which is greatly simplified compared with the existing intersection signal lights.

According to a first aspect of the present invention, the present invention relates to a road deployment system, which includes a road deployment control system and a deployment area provided with the control system. The road deployment control system includes at least one master control machine and a slave control machine. The external bus further includes a signal light control circuit and a lane dispatching light. The output of the master control machine is connected to the input of the slave control machine through an external bus, and the output of the slave control machine is connected to the input of the signal control circuit. And the output end of the signal light control circuit is connected to the input end of the lane dispatching light; a deployment area of the above road deployment control system is provided, and the deployment area is set on the pavement of each intersection of urban roads, and the deployment area is existing On the basis of the pavement direction markings, lane dividing lines, and lanes, a deployment zone start line is added in front of the pavement direction markings. A lane changing zone is provided at the front end of the deployment zone starting line, and a deployment zone terminal is provided near the road junction. line.

The slave controller receives the digital address information of the master controller and compares it with its own address. The slave controller that matches the address sends a response signal to the master controller, and then controls the signal lights in each lane according to the set time. Turn left, go straight, turn right, or display at least two of the phase markers of the lane dispatch lights, as well as the working status of three different colors of red, yellow, and green.

According to a second aspect of the present invention, the present invention also relates to a three-phase lane dispatching lamp for use in a lane dispatching system, which includes an outer shell, a lamp holder, and a lamp surface. The outer shell is connected to the lamp holder, and the lamp surface is disposed on the outer shell. Inside the body, a light-emitting element is arranged on the lamp surface, and at least one of a left turn, a straight turn, and a right turn phase mark is displayed according to a set time program, and each phase mark shows three different colors: red, yellow, and green. The working state of the color. You can also use a liquid crystal display to display a left, straight, and right arrow that alternates between red, yellow, and green on its panel. The outer shell is designed in an arrow shape, and the light emitting diodes correspondingly arranged on the lamp surface in the outer shell are also arrayed in an arrow shape. The outer shell and the lamp holder form a ten "arrow, and the bottom of the straight arrow is provided At the center of the left and right arrows, turn left, go straight, and turn right to form an isosceles triangle. This arrow can express left turn, go straight, and turn right to indicate various forms of vehicle operation. Detailed description

According to a first aspect of the present invention, a road deployment system, wherein the system includes a road deployment control system and a deployment area provided with the control system, the road deployment control system includes a main control machine and an external bus, and the deployment area is provided On the pavement of each intersection of a city road, a signal lamp for instructing a lane is provided on the deployment area, and the main control machine is connected to the signal lamp through an external bus. The road deployment control system further includes a slave controller and a signal lamp control circuit between the master controller and the signal lamp through an external bus. The output of the slave controller is connected to the input of the signal lamp control circuit for signal lamp control. The output end of the circuit is connected to the input end of the signal light; the deployment area is based on the existing pavement direction markings, lane dividing lines, and lanes, and a starting line of the deployment area is added in front of the pavement direction markings at the beginning of the deployment area. There is a lane change area at the front end of the line, and a terminal area for the deployment area near the intersection.

The signal light may be a lane dispatching light, a small light bulb, a dot-matrix lane dispatching light, a liquid crystal display, a digital display light, a fiber-optic light-emitting display light, a laser display light, or a display light composed of other objects capable of emitting light; Intersection signals, non-motor vehicle signals, pedestrian signals.

The main control machine and the slave control machine can use the bus mode and the line break mode. The master control machine communicates with the slave control machine, and the slave control machines communicate with each other. In order to ensure the stability of the system, the master control machine and the slave control machine The control machine can also adopt redundant design, and the slave control machine adopts multi-wire system. Generally, three buses are used; in order to shorten the line length and reduce the voltage drop, the bus is segmented, and the bus is generally divided into four segments.

At the front end of the starting line of the deployment area, each lane is equipped with a slave controller and lane dispatching lights. There is a lane change area between the start line of the distribution area and the lane dispatching lights. At the front end of the lane dispatching lights, there is a deployment area terminal line near the road junction. The deployment area terminal line is also provided for controlling non-motor vehicle lights and pedestrian signals Slave control machine.

In addition, it is also possible to add a primary deployment area outside the deployment area, add a primary deployment area start line in front of the pavement direction mark, and set a primary slave control machine at the front of the primary deployment area start line and on each lane. And primary lane dispatch lights, a primary lane change area is set between the primary lane start line and the primary lane dispatch lights. The front end of the primary lane dispatch lights is the deployment area start line. At the front of the deployment area start line, each lane There are control machines and lane dispatching lights on each side, a lane change area is provided between the start line of the dispatch area and the lane dispatch lights, and the end line of the lane dispatch lights is near the road junction. The line is also provided with a slave control machine for controlling pedestrian crossing lights, and the primary slave control machine is connected to the slave control machine.

The master controller is a PC, a single-chip microcomputer or a single-chip microcomputer system with a serial communication function, and the serial port of the master controller sends a digital signal to the slave controller through an external bus. The slave controller includes at least a communication interface chip. The interface chip has duplex, simplex, or half-duplex digital signal transmission and reception functions. A microcontroller capable of logic processing. The microcontroller can be a single-chip microcomputer or a single-chip microcomputer. The system, PLC, computer, and communication interface receive the digital signal from the host and send the data to the microcontroller. The microcontroller controls the working state of the signal light according to the received digital signal, and controls the light on and off.

The master control machine sends control digital information to the slave control machine, the slave control machine receives the digital address information of the master control machine and compares it with its own address, and the slave control machine with the same address sends a response signal to the master control machine, and then the control signal lights according to The set time alternately displays left, straight, and right turns in each lane, or displays at least two of the phase markers of lane dispatch lights, and three different colors of red, yellow, and green working states.

The main control machine of the present invention is: a PC or a single-chip microcomputer, a single-chip microcomputer system with a serial communication function, such as an ordinary computer, an industrial control computer, a single-chip microcomputer, etc., and sends digital signals through serial ports such as RS2132, RS485, RS2422, and USB interfaces.

The slave control device of the present invention is: a single-chip microcomputer, a single-chip microcomputer system, a PLC, a computer, etc., and includes at least a communication interface chip and a microprocessor, and the interface has a duplex, simplex, or half-duplex digital signal receiving and sending function. The microcontroller is a device capable of performing logic processing. The communication interface receives digital signals from the main control machine and sends the data to the microcontroller. The microcontroller controls the working status of the signal lights according to the received digital signals. Sequential to achieve on / off control of signal lights.

Because this system is used in traffic design, the signal lights are installed in the open air environment and installed at a distance. Different intersections, so the information transmission between them must inevitably go through long distance transmission, and if each component and each type of peripheral equipment are directly connected to the host with a set of lines, then the connection will be complicated, Increased the difficulty of construction. In order to simplify the circuit design and system structure, the bus line structure is adopted, and appropriate interface circuits are configured to exchange information and data through the bus and other equipment. Because the IT system uses RS485, RS2422, RS2132, Longworks, compobus, frofibus, DeviceNet and other protocols and interface chips with simple design and strong anti-interference ability with long-distance multipoint communication capabilities.

According to a second aspect of the present invention, a lane dispatching lamp includes an outer shell, a lamp holder, and a lamp surface, and an outer shell is connected to the lamp holder. The lamp surface is disposed in the outer shell, and the light surface is provided with a light emitting element. According to the set time program, at least one of the left, right, and right phase markers is displayed, and each phase marker presents three different colors of working states: red, yellow, and green.

The lane dispatching light includes a circuit board, a junction box, and a lamp surface composed of the circuit board and the light-emitting element is placed in the housing. A lamp surface cover is provided on the outside of the housing, and the incoming line of the circuit board passes through the junction box. A fastening bolt for fixing the dispatching lamp is embedded in the bottom of the lamp holder, and a terminal box cover is provided outside the terminal box.

The outer shell is designed in an arrow shape, and the corresponding light emitting diodes arranged on the lamp surface are also arrayed in an arrow shape. The outer shell and the lamp holder form a "shaped" arrow, and the bottom of the straight arrow is arranged at The center of the left and right arrows makes left turn, go straight, and right turn to form an isosceles triangle. This arrow can express left turn, go straight, and right turn to indicate various forms of vehicle operation.

In the present invention, the dot matrix of high-brightness light-emitting diodes is arranged so that each phase mark can alternately display red, yellow, or green arrow mark signals, for example: the dot matrix of red, yellow, and green light-emitting diodes is arranged on a phase mark, such as an arrow Three red, yellow, and green identification signals are formed, and under the control of the control circuit, work is performed according to the time program set by the traffic rules, and red, yellow, or green arrow marks are presented respectively.

The lane dispatching lights are controlled by the road deployment control system. The slave controller in the control system lights up the signal lights according to a certain sequence and rules to achieve the function of dispatching vehicles. Beneficial effect.

Compared with the existing technology, in the above three-phase lane dispatching lights, the driving signals of different colors on the same phase mark are displayed at the same coordinate position by a set time program, and the signal display has an intuitive instant recognition effect; The three-phase lane dispatching light can be used to implement the lane-changing dispatch command on the road. By making full use of road resources, the vehicle's traffic efficiency at the level crossing can be improved. In addition, the three-phase lane dispatching light will now A commonly used set of three cavities (three lamp surfaces) is designed as an independent lamp surface, and its structure is simple and easy to install, which greatly simplifies the setting of the signal lights at the crossing level and reduces the system cost.

The urban road dynamic dispatching system provided by the crossroad traffic command of the variable lane of the present invention sets a deployment area between the two crossings, no longer divides roads into direct and reverse lanes, and the direction of travel is not fixed. Instead, lane dispatching lights are temporarily configured as needed, that is, each motor vehicle lane in the road deployment area can be controlled by the dispatching lights for flexible use. The lanes of the original fixed driving direction can be deployed for temporary use by all phases of motor vehicles, and the time difference can also be used to temporarily borrow reverse lanes, which greatly increases the flexibility of road use and reduces waste of road resources. In addition, the present invention has a motor vehicle lane changing and allocation function, which enables random and disorderly motor vehicles to arrange traffic in an orderly manner according to phases, and eliminates the phenomenon that motor vehicles occupy roads and blocks. detailed description

The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, which are used to describe the present invention but not limit the present invention.

1 and FIG. 1A are structural block diagrams of a deployment control system of a road deployment system according to the present invention;

FIG. 2, FIG. 2a and FIG. 2b are schematic diagrams of a deployment area of a road deployment system according to the present invention;

FIG. 3 is a structural block diagram between the hardware of the slave control machine in the deployment control system of the present invention;

4 is a schematic circuit diagram of a slave controller of a road deployment system according to the present invention;

FIG. 5 is a schematic diagram of a ¾-way signal light control according to the present invention;

6 is a schematic diagram of a bidirectional 4-lane road allocation system according to the present invention;

7 is a schematic diagram of a bidirectional 6-lane road allocation system according to the present invention;

8 is a schematic diagram of a structure of each component of a lane dispatching light of the present invention;

FIG. 9 is a schematic diagram of the overall structure of a lane dispatching light according to the present invention. First, the road allocation system of the present invention is introduced. The system includes a road allocation control system and a deployment area where the allocation control system is provided. As shown in FIG. 1, the road allocation control system includes A main control machine 131 and an external bus 133. The deployment area is provided on the pavement of each intersection of a city road. A signal light 135 is provided on the deployment area to indicate lanes. The main control machine 131 is connected to the signal light 135 through the external bus 133. As shown in FIG. 1a, the road allocation control system further includes a slave control machine 132 and a signal light control circuit 134 through an external bus 133 between the master control machine 131 and the signal light 135, and the output terminal and the signal light of the slave control machine 132 The input terminal of the control circuit 135 is connected, and the output terminal of the signal lamp control circuit 134 is connected to the input terminal of the signal lamp 135. Among them, the signal lamp 135 is in the form of a lane scheduling lamp as described below. As shown in FIG. 2, a deployment area provided with the above-mentioned road deployment control system is provided on the pavement at each intersection of an urban road, and the deployment area is identified by existing road surface direction signs 241, lane lines 245, and lanes 246. On the basis of the pavement direction mark 241, a deployment area start line 242 is added in front of the road allocation direction end line 242, a lane change area 243 is provided at the front end of the deployment area start line 242, and a deployment area end line 47 is provided near the intersection. The specific arrangement of the road allocation control system in this deployment area is set according to the number of lanes: When the number of lanes is bidirectional with 6 lanes and 6 lanes or more, a level of slave controller 132, signal light control circuit 134, and lane dispatching light 135 are set to control When the number of lanes is two-way four lanes, it is different from two-way six lanes in that two-stage slave controller 132, signal light control circuit 134, and lane dispatching light 135 are required to be deployed twice.

When the number of lanes is set for a two-way 6-lane and 6-lane deployment system, as shown in FIG. 2a, a deployment area start line 242 is added in front of the pavement direction mark 241. At the front of the deployment area start line 242, each lane 246 Slave controllers 132 and lane dispatching lights 135 are provided on each side, and lane changing areas 243 are provided between the start line 242 of the dispatching area and lane dispatching lights 135. The front end of the lane dispatching lights 135 is provided with a dispatch area terminal near the intersection. Line 47, the terminal line 47 in the deployment area is also provided with a slave control machine 132 for controlling the pedestrian crossing light 36;

When the number of lanes is set for a two-lane, four-lane deployment system, as shown in FIG. 2b, a primary deployment zone start line 242 'is added in front of the pavement direction mark 241. At the front of the primary deployment zone start line 242', each lane 246 A primary slave control machine 132 'and a primary lane dispatching light 135' are provided on each side, and a primary lane changing area 243 'is provided between the primary deployment area starting line 242 and the primary lane dispatching light 135', and the primary lane dispatching light 135 The front end is the start-end line 242 of the deployment area of the deployment system shown in FIG. 2 a, which are arranged in sequence, wherein the primary slave control machine 132 ′ is connected to the slave control machine 132.

It should be further explained here: The indefinite phase interface deployment system shown in Figures 2a and 2b is only a schematic diagram of the deployment area on a road at an intersection. A "T" -shaped intersection or a "D" -shaped intersection is in each of the points. The fork road is also provided in the same manner, and the overall schematic diagram thereof can be specifically seen in FIGS. 6 and 7 later.

The master control machine 131 sends control digital information to the slave control machine 132 through the external bus 133. The slave control machine 132 receives the digital address information of the master control machine 131 and compares it with its own address. The slave control machine 132 whose address matches the address of the master control machine 132 The machine 131 sends a response signal, and then sends a signal to the signal light control circuit 134, so that the lane scheduling light 135 alternately displays left turn, straight ahead, and right turn in each lane according to the set time, or displays the phase identification of the lane scheduling light. At least two, and three different colors of red, yellow, and green working conditions.

The following describes the components in the road deployment control system: Main control machine 131:

The main control machine 131 completes the sending, receiving and scheduling of information, which is mainly composed of a PC, a single-chip microcomputer or a single-chip microcomputer system with a serial communication function, such as an ordinary computer 386 and a computer with a USB interface. 486, 586, etc., industrial control machine PC104, single chip computer, etc .; the serial port of the master control machine sends digital signals to the slave control machine through an external bus.

Slave controller 132:

As shown in FIG. 3, it is a structural block diagram between the hardware of the slave controller. The slave controller 132 includes at least two transfer interfaces a2, a3, a communication interface chip U2, and a micro-control that sends signals to the execution control circuit. The device Ul is integrated into the serial output shift register U3 and an eight-bit switch al. Among them, the microcontroller U1 is a device or system capable of performing logic processing, which may be a single-chip microcomputer, a single-chip microcomputer system, a PLC, a computer, etc. The communication interface chip U2 has a duplex, simplex, or half-duplex digital signal transmission and reception function. The parallel-to-serial displacement register U3 bears the displacement pulse sent by the microcontroller U1.

The transfer interfaces a2 and a3 are connected in parallel to the communication output of the communication interface chip U2. The signal input of the communication interface chip U2 is connected to the output of the main control machine 131 through the RS485 bus 133. The signal output of the communication interface chip U2 is connected to the microcontroller. The signal input of U1 is connected, the input of microcontroller U1 is connected to the output of displacement register U3, and the other end of serial displacement register U3 is connected to the eight-position switch al. The output of microcontroller U1 is controlled by the signal light The input terminal of the circuit 134 is connected and is used to control the on / off of the lane dispatching light.

As shown in Figure 4, for the specific circuit schematic diagram, the AT89C2051 single-chip microcomputer is used as the system microcontroller Ul, and the SN65LBC184P is used as the communication interface chip U2. An eight-bit parallel-to-serial conversion expansion chip with the model 74LS165 is used as the serial output. The shift register U3 uses SW-DIP8 as the eight-position switch al. The reset terminal of the microcontroller U1 is provided with a power-on reset circuit composed of a series resistor R and a capacitor C in series, and the voltage stabilization terminal of the microcontroller U1 is provided with a voltage stabilization circuit composed of a capacitor C and a piezoelectric crystal XTAL. The eight interfaces of the eight-position switch a1 are connected to the eight interfaces incorporated in the serial-out shift register U3- through a resistor R, respectively.

The microcontroller U1 first sends a pulse signal from port P3. 3 with a number of 8 pulses to generate a 74LS165 eight-bit displacement pulse. The displacement data is read from port P3. 2 to generate the data dialed in according to the DIP-8 switch. The corresponding signal is used as the address of the slave. The data from the upper computer includes address information and data information. Microcontroller U1 uses 8 pins and P3. 7 pins to control the semaphore control circuit 134. When the control pin is 髙 level, the semaphore goes out; the microcontroller U1 receives the data on the bus through the communication interface chip U2 , And then it sends these data to microcontroller U1, 'Microcontroller U1 receives data According to the judgment address, if the address is correct, it is said that the civilian data is sent to it, so it is received, and then output by P1 port and P3.7 port, and the signal is passed to the corresponding light-emitting diode LED

The functional role of a chip from the three core components preclude the control unit ^132: the skilled artisan known techniques, and these chips, modules are available on the market, the principle of the chip is inherent, Therefore, its functional role and performance limitation will not be described in detail here.

External bus 133 _:

Because this system is applied to traffic design, and the traffic lights are installed in the open-air environment and at different intersections that are far apart, the information transmission between them must inevitably go through long distance transmission. If the components and each Each type of peripheral equipment is directly connected to the main control machine with a set of lines, so the wiring will be complicated and increase the difficulty of construction. In order to simplify the circuit design and system structure, the bus line structure is adopted, and appropriate interface circuits are configured to exchange information and data through the bus and other equipment. Therefore, this system is selected to have long-distance multipoint communication capabilities, stable transmission performance, and Bus with strong interference ability, such as: RS-2422 bus, RS-2132 bus, RS-485 bus, Long ks compobus frofibus, DeviceNet and other communication protocols and communication interfaces.

Taking the RS-485 bus as an example, it does not use balanced transmission and differential reception, so it has the ability to suppress common-mode interference. In addition, its bus transceiver has high sensitivity and can detect voltages as low as 200mV. Recovered from a distance of thousands of kilometers, the application of RS-485 can also be connected to form a distributed system, which allows 132 drivers and 132 receivers to be connected in parallel.

Signal control circuit 134:

As shown in FIG. 5, the control circuit includes a signal interface circuit 1341, a signal light circuit 1342, an input terminal of the signal interface circuit 1341 is connected to a signal output terminal of the microcontroller U1 in the slave controller 132, and the signal interface circuit 1341 The output end is connected to the input end of the signal light circuit 1342. The signal interface circuit 1341 is mainly composed of a photocoupler and a triode connected in order. The triode generally uses a power amplifier triode to drive the light emitting diode LED arranged in a dot matrix. To realize the dispatching control, the signal light circuit 1342 is mainly composed of a red light emitting diode LED1, a green light emitting diode LED2, a yellow light emitting diode LED3, and a voltage stabilizing resistor R. The light emitting diode LEDs of each color are connected in series in sequence, and the voltage stabilizing resistance is 1000. Europe. ―

The road deployment system of the present invention generally adopts a bus mode, such as: a network topology of a distributed multipoint data acquisition system or a centralized control system, and a method of transmitting data using a master-slave station. Adopt master and slave mode for multi-machine communication. Each slave controller has its own fixed address, and every communication on the network is controlled by the master controller. The working principle of the road deployment control system is as follows:

The address information sent by the master control machine 131 is transmitted to the communication interface chip U2 of the slave control machine 132 through the external bus 133, and the address information sent by the master control machine 131 is stored in the microcontroller U1 of the slave control machine 133 and the memory of the slave control machine 132 Whether the local addresses stored in the comparison are equal. If not, it means that it is not sent to the slave control machine. If it is not the address of the slave control machine 132, the slave control machine 132 does not receive the digital signal from the master control machine 131. No action is taken. If it is sent by the master control machine 131 to the slave control machine 132, the slave control machine 132 will continue to receive, and then transmit the control data information to the signal interface circuit 13241 in the signal lamp control circuit 134. The signal is isolated by the photocoupler, and the power The triode amplifies and drives the red, yellow, and green three-color dot matrix composed of the light-emitting diode LEDs in the signal lamp circuit 13242, and lights the signal lamps according to a certain timing and rule to achieve the function of dispatching vehicles, showing red, yellow, or green arrows, respectively. Identifies the implementation of dispatching control.

A master controller that transmits address information and control digital information and at least two monitoring master controllers call a slave controller with a fixed address or a variable address. The control signal light is on and off. The master controller first sends a time synchronization to the network. Signal, the slave control machine according to the signal validity time, when the master control machine needs to control the slave control machine, the master control machine sends the slave control machine's address to the slave control machine, all the slave control machines receive the address and communicate with their own address In comparison, the slave controller with the same address sends a response signal back to the master controller. After the master controller receives the response from the slave controller, it starts a communication. The master controller sends a control digital control signal to the slave controller. The control machine lights the corresponding signal lamp according to the control digital signal. If the addresses do not match, ignore them and continue monitoring the calling address. After the master receives the response from the slave, it starts a communication. After the communication is completed, the slave continues to monitor and waits for a call.

Due to the difference in the number of lanes, the arrangement between the master control machine 131 and the slave control machine 132 is also different. For details, see the following embodiments. With reference to FIG. 2, FIG. 6, and FIG. The arrangement is explained in detail:

Embodiment 1:

As an example, the two-lane 4-lane road deployment system is shown in Figure 6. The main control machine 131 uses an industrial control machine to insert an expansion board with four serial RS485 ports. The four serial ports are connected in four directions respectively. Four RS-485 buses: (Slave controller 132 is referred to as slave)

Bus A is connected to "Slave 1", "Slave 22", "Slave 15", "Slave 16", "Slave 7", "Slave 8", "Slave 27", "Slave 28" respectively .

Bus B is connected to "Slave 2", "Slave 23", "Slave 9", "Slave 10", "Slave 18", "Slave 17", "Slave 29", "Slave 30"". Bus C is connected to "Slave 3", "Slave 24", "Slave 11", "Slave 12", "Slave 20", "Slave 19", "Slave 31", "Slave 32"".

Bus D is connected to "Slave 4", "Slave 21", "Slave 5", "Slave '6", "Slave 13", "Slave 14", "Slave 25", "Slave" 26 ".

Because we have already introduced the two-lane 4-lane pavement deployment control system, the deployment area needs to be added with a primary allocation area starting line 242 ', a primary lane changing area 243', and a primary lane dispatching light 135 '. Therefore, in the control A primary slave control machine 132 'is added to the system, and the above are all primary slave control machines 132'. In addition to controlling lane dispatch lights, the slave controller can also be used to control intersection signal lights, non-motor vehicle signal lights, and pedestrian signal lights. For example: Slave 1, Slave 2, Slave 3, Slave 4 respectively control the intersection signal lights; Slave 5, Slave 6, Slave 7, Slave 8, Slave 9, Slave 10, Slave 11, The slave 12 controls the lane scheduling lights 135 respectively; the slave 13, the slave 14, the slave 15, the slave 16, the slave 17, the slave 18, the slave 19, and the slave 20 respectively control the primary lane scheduling lights 135 '; The slave 21, slave 22, slave 23, and slave 24 control the non-motor vehicle signal lights respectively; slave 25, slave 26, slave 27, slave 28, slave 29, slave 30, slave 31, The slaves 32 respectively control the pedestrian signal lights, and each of the above slaves can control 9 lights, and their address codes are binary 1, 2, 3, 4, 5, 6, ...... 24 respectively. Example two

The two-lane 6-lane road deployment system, as shown in Figure 7, its main control machine 131 uses an industrial control machine to insert an expansion board with four serial RS485 ports. The four serial ports are connected to four in four directions. RS-485 bus: (Slave controller 132 for short)

Bus A is connected to "Slave 1", "Slave 17", "Slave 15", "Slave 16", "Slave 14", "Slave 21", and "Slave 22" respectively.

Bus B is connected to "slave 2", "slave 20", "slave 8", "slave 9", "slave 10", "slave 27", and "slave 28" respectively.

Bus C is connected to "Slave 3", "Slave 11", "Slave 12", "Slave 13", "Slave 19", "Slave 25", and "Slave 26".

Bus D is connected to "Slave 4", "Slave 5", "Slave 6", "Slave .7", "Slave 18", "Slave 23", and "Slave 24" respectively.

The arrangement between the master control machine 131 and the slave control machine 132 is the same as that in the first embodiment, except that the control of the primary lane control lamp 135 'by the primary slave control machine 132' is omitted, so 8 units can be saved. From the control machine. Slave 1, Slave 2, Slave 3, and Slave 4 respectively control the intersection signal lights; Slave 17, Slave 18, Slave 19, Slave 20 control sidewalk lights respectively; Slave 21, Slave 22, Slave 23, Slave 24, Slave 25, Slave 26, Slave 27, Slave Machines 28 control non-motor vehicle signal lights respectively, and the remaining slaves control lane dispatch lights. Each slave can control 9 lights, and the address codes are binary 1, 2, 3, 4, 5, 6, ····· 20 respectively.

In addition, for roads with more than 6 lanes, the arrangement of the road allocation system and the allocation control system is the same as the arrangement of the above 6 lanes, except that a slave control machine for controlling lane scheduling lights is added on each road.

The above-mentioned lane dispatching light 135 is specifically a three-phase lane dispatching light. As shown in FIG. 8, it is a schematic diagram of a structure of the three-phase lane dispatching light. integrated. The three-phase lane scheduling light includes an outer shell 3, a lamp holder 4, a circuit board 5, a junction box 9, and a lamp surface 10 composed of a light emitting element. The lamp surface 10 composed of the circuit board 5 and the light emitting element is placed in the outer casing 3, further A lamp surface cover 2 is provided on the outside of the outer casing 3, a fastening bolt 8 'for fixing the dispatching lamp is embedded under the lamp holder 4, and a terminal box cover 1 is provided outside the terminal box 9.

The outer shell 3 is designed in an arrow shape, and the light emitting diodes 11 correspondingly arranged on the lamp surface 10 in the outer shell 3 are also arrayed in an arrow shape. The incoming wires of the circuit board 5 pass through the junction box 9, and then the junction box cover 1 is covered. After the light-emitting diode LED is installed in the outer casing 3, the lamp surface cover 2 is covered.

As shown in FIG. 8 and FIG. 9, the installed outer shell 3 is snap-fixed to the lamp holder 4 to form a whole, forming an isosceles triangle arrow that is arranged in the order of left, straight, and right. The arrow can express a left turn. , Go straight, turn right to indicate various forms of vehicle operation, the lamp holder 4 is fixed on the lamp post 6 through the fastener pressing plate 7, the fastening bolt 8 ', and the nut 8.

It should be noted here that there is another way to fix the card between the housing 3 and the lamp holder 4:

(1) design the lamp holder 4 into an inverted T-shaped structure with three groove-shaped arms, and then insert the arrow-shaped outer shell 3 into the lamp holder 4 respectively;

(2) setting the tail of the above-mentioned arrow-shaped outer shell 3 into a groove shape, and then inserting the arms of the inverted T-shaped lamp holder 4 into the three outer shells 3 turning left, going straight, and turning right;

In addition, the outer shell 3 and the inverted T-shaped lamp holder 4 can also be cast into a single body to form an isosceles triangle arrow in the order of left, straight, and right "+ This arrow can express left, straight, right Indicating various forms of vehicle operation, that is, the three turn-on, turn-on, and turn-on lights of the three-phase lane scheduling lights are continuous lights.

Among them, the red light-emitting diode LED1, the green light-emitting diode LED2, and the yellow light-emitting diode LED3 in which the light-emitting element 11 dot matrix is arranged in the outer casing 3 can alternately display red, yellow, or green arrow marks. Identification signals, for example: Red, yellow, and green light-emitting diodes are arranged on a phase mark, such as three red, yellow, and green mark signals on the arrow. In this way, red, yellow, and green can be alternately displayed. Command and vehicle scheduling.

Generally speaking, the present invention is a PC with a serial communication function, a single-chip microcomputer or a single-chip microcomputer system to operate and control the intersection command signal lights and the lane and road deployment system extending from the intersection and crossroads provided with the signal lights. Vehicles in each direction of arrival at the intersection will be organized in order of phase to achieve that each of the forward lanes will be fully used by vehicles in the same driving direction, and vehicles in each direction will be in the form of a number of rows in the direction of the signal lights at the intersection. Traffic control system that passes through the crossing without conflict under command.

The invention has the ability to compile various application programs according to different road conditions, and achieve system operations such as: "machine, non, and people" space-time separation, clearing, dredging, single-sided release, two-way release, signal light sleep, special police command and use of leisure The function of reverse lanes during periods. '

The invention can effectively alleviate urban traffic congestion, improve traffic safety, and reduce red light waiting time. It is a technical guarantee system for improving the level of traffic management and realizing urban order traffic.

Claims

Rights request

A road deployment system, wherein the system comprises a road deployment control system and a deployment area provided with the control system, the road deployment control system includes a main control machine and an external bus, and the deployment area is provided at each intersection of a city road On the road surface, a signal lamp for indicating a lane is provided on the deployment area, and the main control machine is connected to the signal lamp through an external bus.

2. The road deployment system according to claim 1, wherein the road deployment control system further includes a slave control machine and a signal light control circuit between the master control machine and the signal lamp through an external bus, and the slave control machine The output end is connected to the input end of the signal light control circuit, and the output end of the signal light control circuit is connected to the input end of the signal light; the deployment area is based on the existing road direction markings, lane dividing lines, and lanes in the road direction A start line of the deployment area is added in front of the sign. A lane change area is provided at the front end of the start area of the deployment area, and a line of the deployment area is provided near the intersection.

3. The road deployment system according to claim 1, wherein the signal light can be a lane scheduling light, a small light bulb, a dot-matrix lane scheduling light, a liquid crystal display, a digital display light, a fiber-optic light-emitting display light, and a laser display. Lights or other display lights that can emit light; can be used as intersection signal lights, non-motor vehicle signal lights, pedestrian signal lights.

4. The road deployment system according to claim 1, wherein the master control machine and the slave control machine can adopt a bus mode or a branching mode, and the master control machine communicates with the slave control machine, and the slave control machines realize mutual interaction. Communication; in order to ensure the stability of the system, the master control machine and the slave control machine can also adopt a redundant design, and the slave control machine uses a multi-wire system. ·

5. The road allocation system according to claim 1 or 3, wherein a slave controller and a lane dispatching light are provided at each front of the beginning and end lines of the allocation area, and between the beginning and end lines of the allocation area and the lane allocation light. There is a lane changing area. A terminal line for the deployment area is located near the intersection at the front end of the lane dispatching light, and a slave control machine for controlling non-motor vehicle signal lights and pedestrian signal lights is also provided at the terminal line of the allocation area.

The road deployment system according to claim 1 or 3, wherein a primary deployment area is added outside the deployment area, and a primary deployment area start line is added in front of the road direction sign, starting at the primary deployment area. At the front end of the end line, each lane is provided with a primary slave controller and a primary lane dispatching light. A primary lane changing area is provided between the beginning of the primary allocation area and the primary lane dispatching light. The front end of the primary lane dispatching light is The starting line of the deployment area. At the front of the starting line of the deployment area, each lane is provided with a control machine and lane dispatching lights. A lane changing area is provided between the starting line of the deployment area and the lane dispatching lights. The front end is provided with a deployment area terminal line near the road junction, and a slave control machine for controlling a pedestrian crossing light is also provided at the deployment line terminal line, and the primary slave control machine is connected to the slave control machine.

The road deployment system according to claim 1 or 3, wherein the master control machine is a PC, a single-chip microcomputer or a single-chip microcomputer system having a serial communication function, and the serial port of the master control machine is controlled to the slave through an external bus. Machine sends digital signals.

The road deployment system according to claim 1 or 3, wherein the slave controller includes at least a communication interface chip, and the interface chip has a duplex, simplex, or half-duplex digital signal transmission and reception function, and can perform A logic processing microcontroller. The microcontroller may be a single-chip microcomputer, a single-chip microcomputer system, a PLC, or a computer. The communication interface receives a digital signal sent by the host and sends the data to the micro-controller. The micro-controller according to the received digital signal Control the working state of the signal lamp, and control the on and off of the signal lamp.

9. A lane dispatching lamp, comprising an outer shell, a lamp holder, and a lamp surface, wherein the outer shell is connected to the lamp holder, the lamp surface is arranged in the outer shell, the light surface is provided with a light emitting element, and the set time is The program displays at least one of the left, right, and right phase markers, and each phase marker presents three different colors of working states: red, yellow, and green. ,

The lane dispatching lamp according to claim 9, wherein the three-phase lane dispatching lamp further comprises a circuit board, a junction box, and a lamp surface composed of the circuit board and the light-emitting element is placed in the housing, and a lamp is provided on the outside of the housing. The surface cover and the incoming line of the circuit board pass through the junction box, and the fastening bolts for fixing the dispatching lamp are embedded under the lamp holder, and the junction box cover is provided outside the junction box. .

The lane scheduling light according to claim 10, wherein the outer shell is designed in an arrow shape, and the light emitting diodes correspondingly arranged on the lamp surface of the outer shell are also arranged in an arrow shape in a dot matrix, and the outer shell and the lamp holder Form a "" shaped arrow, the bottom of the straight arrow is set at the center of the left and right arrows, so that the left, straight, and right turns form an isosceles triangle. The arrow can express left, straight, and right Indicate various forms of vehicle operation.

12. The lane scheduling lamp according to any one of claims 9 to 11, wherein the lamp holder is provided in an inverted T-shaped structure having three groove-shaped arms, and the arrow-shaped outer shell is embedded in the lamp holder.

13. The lane scheduling light according to any one of claims 9 to 11, wherein a tail portion of the arrow-shaped outer shell is provided in a groove shape, and the arms of the inverted T-shaped lamp holder are respectively inserted into left turn, Go straight and turn right into the three shells.

14. The lane scheduling light according to any one of claims 9 to 11, wherein the outer casing and the lamp holder can also be welded into a single body. ·