Distributed traffic signal controller for optical fiber communication

Abstract

The utility model provides a distributed traffic signal control machine for optical fiber communication, which comprises a main control machine and a sub-control machine which are connected with each other and are respectively arranged at different intersections, and the main control machine is a traffic signal control machine which is used for sending control signals to the sub-control machine and is arranged at a certain intersection; the branch control machine is a traffic signal control machine which is used for receiving and executing the control signal sent by the main control machine and is arranged at an adjacent intersection; the main control computer is connected with a credit control system platform through a network; according to the utility model, a distributed architecture is adopted, the main control machine and the branch control machine are connected with each other through the photoelectric composite cable and are respectively arranged at different intersections, and the light control information of the intersections is transmitted through the optical fibers, so that efficient and reliable signal control of the intersections is realized, the layout of communication lines of the intersections is simplified, and the network structure design of the intersections is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent transportation, and particularly relates to a distributed traffic signal controller for optical fiber communication. Background Art

[0002] With the development of intelligent transportation, the informatization construction such as signal machine networking and adding sensing devices has been continuously improved, and the system construction also faces problems such as difficult pipe threading and wiring. The traditional signal control system directly connects signal lights with control cables, with a large number of cables, complex wiring, and high costs; it is difficult to locate faults, which is not conducive to maintenance; it has low reliability and a limited service life; the front-end devices at intersections are not effectively interconnected, and the lines are intricate, which also poses potential safety hazards. Content of the Utility Model

[0003] The purpose of the utility model is to provide a distributed traffic signal controller for optical fiber communication to solve the above-mentioned deficiencies of the prior art.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A distributed traffic signal controller for optical fiber communication includes a main controller and a sub-controller that are connected to each other and are respectively arranged at different intersections. The main controller is a traffic signal controller arranged at a certain intersection for sending control signals to the sub-controller; the sub-controller is a traffic signal controller arranged at a neighboring intersection for receiving and executing the control signals sent by the main controller; the main controller is connected to a signal control system platform through a network; the main controller includes an ARM main control unit, a network communication unit, an optical fiber communication unit, a lamp control output unit connected to the ARM main control unit, and an electrical power distribution unit for power supply management of the ARM main control unit, the optical fiber communication unit, and the lamp control output unit; the sub-controller includes a single-chip microcomputer control unit, an optical fiber communication unit, a lamp control output unit connected to the single-chip microcomputer control unit, and an electrical power distribution unit for power supply management of the single-chip microcomputer control unit, the optical fiber communication unit, and the lamp control output unit.

[0006] Further, both the main controller and the sub-controller are internally provided with optical fiber communication modules, and the sub-controller is connected to the main controller through an optical fiber.

[0007] Further, the sub-controller is connected to the main controller through an optical and electrical composite cable.

[0008] Further, the main controller and the sub-controller are respectively arranged on both sides of different roads and are electrically connected to the signal lights at the intersections.

[0009] Further, the master controller includes an RJ45 interface, an ARM controller, a control button, an optical fiber interface, a CAN optical fiber hub, a single-chip microcomputer MCU, red, yellow, and green LED lights, a 24 decoder, a red light MOS transistor, a green light MOS transistor, a yellow light MOS transistor, a voltage detection module, a lamp wire interface, a buffer device, a power supply, a DC-DC circuit, and a current detection module.

[0010] Further, the RJ45 interface is connected to the ARM controller through a network chip, the control button is connected to the ARM controller through an I / O port, and the ARM controller communicates with the single-chip microcomputer MCU through a USART serial port.

[0011] Further, the slave controller includes an optical fiber interface, a CAN optical fiber hub, a single-chip microcomputer MCU, red, yellow, and green LED lights, a 24 decoder, a red light MOS transistor, a green light MOS transistor, a yellow light MOS transistor, a voltage detection module, a lamp wire interface, a buffer device, a power supply, a DC-DC circuit, and a current detection module.

[0012] Further, the optical fiber interface is connected to the CAN optical fiber hub, the CAN optical fiber hub communicates with the single-chip microcomputer MCU through CAN, the red, yellow, and green LED lights are connected to the 524 decoder, the 24 decoder is connected to the single-chip microcomputer MCU through I / O, the 24 decoder controls the red light MOS transistor, the green light MOS transistor, and the yellow light MOS transistor through I / O, the voltage detection module detects the voltage outputs of the red light MOS transistor, the green light MOS transistor, and the yellow light MOS transistor, the lamp wire interface is connected to the red light MOS transistor, the green light MOS transistor, and the yellow light MOS transistor, the buffer device is connected to the voltage detection module and uploads the IO signal of the detection result to the single-chip microcomputer MCU, the current detection module detects the current between the power supply and the red light MOS transistor, the green light MOS transistor, and the yellow light MOS transistor, the current detection module is connected to the single-chip microcomputer MCU and collects the current value through AD, and the power supply can be externally connected to a DC12V battery and an AC-to-DC12V switching power supply and is connected to the DC-DC circuit to be converted into DC3.3V to supply power to the system.

[0013] As can be seen from the above technical solutions, the present invention adopts a distributed architecture, and the master controller and the slave controller, which are connected to each other through an optical and electrical composite cable and are respectively arranged at different intersections, transmit the intersection lamp control information through optical fibers, realizing efficient and reliable intersection signal control and lamp control state acquisition, simplifying the layout of intersection communication lines, and optimizing the design of the intersection network structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 is a schematic diagram of the structure of the master controller of the present invention;

[0016] Figure 3 This is a schematic structural diagram of the sub-control machine of the present utility model;

[0017] Figure 4 This is a schematic diagram of the functional modules of the main control machine of the present utility model;

[0018] Figure 5 This is a schematic diagram of the functional modules of the sub-control machine of the present utility model. Specific embodiments

[0019] A preferred embodiment of the present utility model will be described in detail below with reference to the accompanying drawings.

[0020] As Figure 1 shown, the distributed traffic signal controller for fiber optic communication includes a main control machine and a sub-control machine that are connected to each other and are respectively arranged at different intersections. The main control machine is a traffic signal controller arranged at a certain intersection for sending control signals to the sub-control machine; the sub-control machine is a traffic signal controller arranged at a neighboring intersection for receiving and executing the control signals sent by the main control machine; the main control machine is connected to a signal control system platform through a network. In specific use, both the main control machine and the sub-control machine are internally provided with fiber optic communication modules, and the sub-control machine is connected to the main control machine through a fiber optic cable; for the mains version, the sub-control machine and the main control machine are connected through an optical and electrical composite cable; the main control machine and the sub-control machine are respectively arranged on both sides of different roads and are electrically connected to the signal lights at the intersections; the main control machine and the sub-control machine that are connected to each other through an optical and electrical composite cable and are respectively arranged at different intersections transmit the intersection lamp control information through a fiber optic cable, realizing efficient and reliable intersection signal control and lamp control state acquisition, simplifying the layout of the intersection communication lines, and optimizing the intersection network structure design.

[0021] The main control machine described in this preferred embodiment includes an ARM main control unit, a network communication unit, a fiber optic communication unit, a lamp control output unit connected to the ARM main control unit, and an electrical power distribution unit for power supply management of the ARM main control unit, the fiber optic communication unit, and the lamp control output unit; specifically, as Figure 2 and 4 shown, the main control machine includes an RJ45 interface, an ARM controller, a control button, a fiber optic interface, a CAN fiber optic hub, a single-chip microcomputer MCU, red, yellow, and green LEDs, a 24 decoder, a red light MOS transistor, a green light MOS transistor, a yellow light MOS transistor, a voltage detection module, a lamp wire interface, a buffer device, a power supply, a DC-DC circuit, and a current detection module; the RJ45 interface is connected to the ARM controller through a network chip, the control button is connected to the ARM controller through an I / O port, and the ARM controller communicates with the single-chip microcomputer MCU through a USART serial port.

[0022] The slave controller described in this preferred embodiment includes a single-chip microcomputer control unit, an optical fiber communication unit connected to the single-chip microcomputer control unit, a lamp control output unit, and an electrical power distribution unit for power supply management of the single-chip microcomputer control unit, the optical fiber communication unit, and the lamp control output unit; specifically, as Figure 3 and 5 shown, the slave controller includes an optical fiber interface, a CAN optical fiber hub, a single-chip microcomputer MCU, red, yellow, and green LEDs, a 24 decoder, a red lamp MOS transistor, a green lamp MOS transistor, a yellow lamp MOS transistor, a voltage detection module, a lamp wire interface, a buffer device, a power supply, a DC-DC circuit, and a current detection module.

[0023] As Figure 4 and 5 shown, for the above-mentioned master controller and slave controller, the optical fiber interface is connected to the CAN optical fiber hub, the CAN optical fiber hub communicates with the single-chip microcomputer MCU through CAN, the red, yellow, and green LEDs are connected to the 524 decoder, the 24 decoder is connected to the single-chip microcomputer MCU through I / O, the 24 decoder controls the red lamp MOS transistor, the green lamp MOS transistor, and the yellow lamp MOS transistor through I / O, the voltage detection module detects the voltage output of the red lamp MOS transistor, the green lamp MOS transistor, and the yellow lamp MOS transistor, the lamp wire interface is connected to the red lamp MOS transistor, the green lamp MOS transistor, and the yellow lamp MOS transistor, the buffer device is connected to the voltage detection module and uploads the IO signal of the detection result to the single-chip microcomputer MCU, the current detection module detects the current between the power supply and the red lamp MOS transistor, the green lamp MOS transistor, and the yellow lamp MOS transistor, the current detection module is connected to the single-chip microcomputer MCU and collects the current value through AD, and the power supply can be externally connected to a DC12V battery and an AC-to-DC12V switching power supply, and is connected to the DC-DC circuit to be converted into DC3.3V to supply power to the system.

[0024] The above-described embodiments are merely descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A distributed traffic signal controller with optical fiber communication, comprising a main control machine and sub-control machines connected to each other and respectively arranged at different intersections, characterized in that: The master control machine is a traffic signal control machine installed at a certain intersection and used to send control signals to the slave control machine; the slave control machine is a traffic signal control machine installed at a neighboring intersection and used to receive and execute control signals sent by the master control machine; The main control machine is connected to the information control system platform via a network; The main control machine includes an ARM main control unit, a network communication unit, an optical fiber communication unit, a light control output unit connected to the ARM main control unit, and an electrical power distribution unit for power supply management of the ARM main control unit, the optical fiber communication unit, and the light control output unit; The sub-controller includes a single-chip microcomputer control unit, an optical fiber communication unit connected to the single-chip microcomputer control unit, a light control output unit, and an electrical distribution unit for power supply management of the single-chip microcomputer control unit, the optical fiber communication unit, and the light control output unit.

2. The distributed traffic signal controller of optical fiber communication according to claim 1, characterized in that: The main control machine and the sub-control machine are both equipped with optical fiber communication modules, and the sub-control machine is connected to the main control machine via optical fiber.

3. The distributed traffic signal controller of optical fiber communication according to claim 2, characterized in that: The sub-control machine is connected to the main control machine via a photoelectric composite cable.

4. The distributed traffic signal controller of optical fiber communication according to claim 2, characterized in that: The main control machine and the sub-control machine are respectively arranged on both sides of different roads and are electrically connected to the signal lights at the intersections.

5. A distributed traffic signal controller for optical fiber communication according to claim 4, characterized in that: The main control machine includes an RJ45 interface, an ARM controller, a control button, an optical fiber interface, a CAN optical fiber hub, a single-chip microcomputer MCU, red, yellow and green LED lights, a 24 decoder, a red light MOS tube, a green light MOS tube, a yellow light MOS tube, a voltage detection module, a light line interface, a buffer device, a power supply, a DC-DC circuit and a current detection module.

6. A distributed traffic signal controller for optical fiber communication according to claim 5, characterized in that: The RJ45 interface is connected to the ARM controller via a network chip, the control button is connected to the ARM controller via an I / O port, and the ARM controller communicates with the single-chip microcomputer MCU via a USART serial port.

7. A distributed traffic signal controller for optical fiber communication according to claim 4, characterized in that: The sub-controller includes an optical fiber interface, a CAN optical fiber hub, a single-chip microcomputer MCU, red, yellow and green LED lights, a 24 decoder, a red light MOS tube, a green light MOS tube, a yellow light MOS tube, a voltage detection module, a light line interface, a buffer device, a power supply, a DC-DC circuit and a current detection module.

8. A distributed traffic signal controller with optical fiber communication according to claim 5 or 7, characterized in that: The optical fiber interface is connected to the CAN optical fiber hub, and the CAN optical fiber hub communicates with the single-chip computer MCU through CAN. The red, yellow and green LED lights are connected to the 524 decoder, and the 24 decoder is connected to the single-chip computer MCU through I / O. The 24 decoder controls the red light MOS tube, the green light MOS tube and the yellow light MOS tube through I / O. The voltage detection module detects the voltage output of the red light MOS tube, the green light MOS tube and the yellow light MOS tube. The light line interface is connected to the red light MOS tube, the green light MOS tube and the yellow light MOS tube. The buffer device is connected to the voltage detection module and uploads the IO signal of the detection result to the single-chip computer MCU. The current detection module detects the current between the power supply and the red light MOS tube, the green light MOS tube and the yellow light MOS tube. The current detection module is connected to the single-chip computer MCU and collects the current value through AD. The power supply can be externally connected to a DC12V battery and an AC to DC12V switching power supply, and is connected to a DC-DC circuit to convert it into DC3.3V to power the system.

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