CN113470379A - Traffic signal machine phase acquisition and transmission method and device - Google Patents
Traffic signal machine phase acquisition and transmission method and device Download PDFInfo
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- CN113470379A CN113470379A CN202010246103.1A CN202010246103A CN113470379A CN 113470379 A CN113470379 A CN 113470379A CN 202010246103 A CN202010246103 A CN 202010246103A CN 113470379 A CN113470379 A CN 113470379A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
Abstract
The method and the device for acquiring and sending the phase of the traffic signal machine belong to the technical field of intelligent management and control of road traffic. The existing traffic signal lamp system adopts a one-lamp-one-line connection mode, so that the construction and wire cost is high; when the line is damaged or the signal machine is powered off, traffic is easy to be jammed or paralyzed, safety accidents are easy to happen, and the system maintenance cost is high. The invention is provided with a signal lamp signal receiving module of a traffic signal machine, a solar cell panel, a battery, a satellite time service module, a radio communication module and a communication bus interface, and can be networked with a radio communication signal lamp with a power supply to form a signal lamp system. The invention can receive the signal lamp control signal of the traffic signal machine in real time, and send the state of the received control signal to the signal lamp of radio communication in a radio communication mode by encoding the control signal into a data frame; when the traffic signal machine has power failure, the solar cell panel or the battery continues to supply power to the device, and the wireless communication signal lamp continues to be controlled.
Description
Technical Field
The invention relates to a method and a device for acquiring and sending phases of a traffic signal machine, belonging to the technical field of intelligent management and control of road traffic.
Background
The existing road traffic signal lamp system adopts a one-lamp one-line connection mode, so that the construction and wire cost is high; when the line is damaged or the traffic signal has a power failure, traffic may be jammed or paralyzed, or a safety accident may be caused, and the system maintenance cost is high.
The device is provided with a signal lamp signal receiving module of a traffic signal machine, a solar cell panel, a battery, a satellite time service module, a radio communication module and a bus communication interface, and is used for networking the traffic signal machine and a radio communication signal lamp with a power supply to form a traffic signal lamp system.
The device can receive the signal lamp control signal of the traffic signal machine in real time, and send the state of the received control signal to the signal lamp of radio communication in a radio communication mode by encoding the control signal into a data frame; when the traffic signal machine has power failure, the solar cell panel or the battery continues to supply power to the device, and the wireless communication signal lamp continues to be controlled.
Disclosure of Invention
The invention relates to a method and a device for acquiring and sending phases of a traffic signal machine.
The method of the invention specifically comprises the following steps: when the power supply of the traffic signal machine is normal, receiving an alternating current 220V signal lamp control output signal of the traffic signal machine, acquiring signal lamp phase control information, and sending the signal lamp phase control information to a radio communication traffic signal lamp in real time in a radio communication mode; memorizing or storing signal lamp phase period information and corresponding time information output by a traffic signal machine; a solar panel and a battery are used as a backup power supply; the required time adopts the time of the time service of the navigation satellite; the method for acquiring the signal lamp phase control information comprises the steps of acquiring the signal lamp phase control information in a data communication mode with a traffic signal machine and acquiring the signal lamp phase control information in a network data communication mode.
According to the method, when the traffic signal machine is powered off, the power is automatically converted into the power supplied by the battery or the solar panel; and calculating according to the time service time of the navigation satellite, the memorized or stored signal lamp phase period information and the corresponding time information, generating signal lamp phase control information and sending the signal lamp phase control information to a radio communication traffic signal lamp in a radio communication mode.
The device comprises a signal conversion unit, a main control module, a power supply unit, a radio communication module, a network communication module, a bus communication module and a satellite time service module.
In the device, a signal conversion unit converts an alternating current 220V signal lamp control signal of a traffic signal machine into a TTL level signal and sends the TTL level signal to a main control module; the power supply unit is connected with an external alternating current 220V power supply, is provided with a solar cell panel, a battery, a power supply conversion module, a DC/DC module and a battery power supply management module and provides a power supply for the device; the radio communication module is communicated with the main control module through a wired communication port and performs radio communication with the outside; the network communication module is communicated with the main control module and is communicated with an external network; the bus communication module is communicated with the main control module and is communicated with a traffic signal machine; the satellite time service module receives signals of the navigation satellite and transmits the time of the navigation satellite to the main control module in a communication mode.
In the device, a main control module receives a TTL level signal of a signal conversion unit and the time of a navigation satellite time service module, obtains a complete signal lamp phase period through calculation, sends signal lamp phase information to a radio communication signal lamp in real time in a radio communication mode, and simultaneously memorizes or stores the signal lamp phase period information and corresponding time information output by a traffic signal machine; the mode of acquiring the signal lamp phase control information by the main control module comprises the mode of acquiring data communication with a traffic signal machine through the bus communication module and the mode of acquiring network data communication.
In the device, when an external alternating current 220V power supply is electrified, the power supply conversion module outputs the power supply to supply power, and meanwhile, the battery is charged through the battery power supply management module; when an external alternating current 220V power supply is powered off, the solar cell panel or the battery supplies power, and when sunlight is sufficient, the solar cell panel charges the battery through the battery power supply management module.
According to the device, when the alternating current 220V power failure occurs, the main control module generates signal lamp phase information through calculation according to navigation satellite time, memorized or stored signal lamp phase information and corresponding time information, and continuously sends the signal lamp phase information to a radio communication traffic signal lamp through a radio communication mode.
Drawings
Fig. 1 is a schematic circuit diagram.
Fig. 2 is a circuit schematic of the signal conversion unit.
Fig. 3 is a circuit schematic of the power supply unit.
FIG. 4 is a schematic diagram of the present invention.
Examples
Referring to fig. 1, 2 and 3, the device of the embodiment comprises a signal conversion unit U1, a signal conversion unit U2, a signal conversion unit U3, a signal conversion unit U4, a signal conversion unit U5, a main control module U6, a power supply unit U7, a radio communication module U8, a network communication module U9, a bus communication module U10 and a satellite time service module U11; the signal conversion unit U1, the signal conversion unit U2, the signal conversion unit U3, the signal conversion unit U4 and the signal conversion unit U5 are all composed of a signal converter A1, a signal converter A2, a signal converter A3, a signal converter A4, a signal converter A5, a signal converter A6, a signal converter A7, a signal converter A8 and a signal converter A9; the power supply unit U7 is composed of a solar panel B1, a power conversion module B2, a DC/DC module B3, a battery power management module B4, a battery B5, a diode D1 and a diode D2.
Description of the example apparatus is described with reference to fig. 1, 2, and 3.
In the example apparatus, the signal conversion unit U1 has a signal input 1 port connected to the external signal N1, a signal input 2 port connected to the external signal N2, a signal input 3 port connected to the external signal N3, a signal input 4 port connected to the external signal N4, a signal input 5 port connected to the external signal N5, a signal input 6 port connected to the external signal N6, a signal input 7 port connected to the external signal N7, a signal input 8 port connected to the external signal N8, and a signal input 9 port connected to the external signal N9. A signal output port 1 of the signal conversion unit U1 is connected with an I/O _1 port of the main control module U6, a signal output port 2 is connected with an I/O _2 port of the main control module U6, a signal output port 3 is connected with an I/O _3 port of the main control module U6, a signal output port 4 is connected with an I/O _4 port of the main control module U6, a signal output port 5 is connected with an I/O _5 port of the main control module U6, a signal output port 6 is connected with an I/O _6 port of the main control module U6, a signal output port 7 is connected with an I/O _7 port of the main control module U6, a signal output port 8 is connected with an I/O _8 port of the main control module U6, a signal output port 9 is connected with an I/O _9 port of the main control module U6, and a zero line input port of the signal conversion unit U1 is connected with an external alternating current 220V zero line.
In the example device, the signal input 1 port of the signal conversion unit U2 is connected to the external signal S1, the signal input 2 port is connected to the external signal S2, the signal input 3 port is connected to the external signal S3, the signal input 4 port is connected to the external signal S4, the signal input 5 port is connected to the external signal S5, the signal input 6 port is connected to the external signal S6, the signal input 7 port is connected to the external signal S7, the signal input 8 port is connected to the external signal S8, and the signal input 9 port is connected to the external signal S9; a signal output port 1 of the signal conversion unit U2 is connected with an I/O _10 port of the main control module U6, a signal output port 2 is connected with an I/O _11 port of the main control module U6, a signal output port 3 is connected with an I/O _12 port of the main control module U6, a signal output port 4 is connected with an I/O _13 port of the main control module U6, a signal output port 5 is connected with an I/O _14 port of the main control module U6, a signal output port 6 is connected with an I/O _15 port of the main control module U6, a signal output port 7 is connected with an I/O _16 port of the main control module U6, a signal output port 8 is connected with an I/O _17 port of the main control module U6, a signal output port 9 is connected with an I/O _18 port of the main control module U6, and a zero line input port of the signal conversion unit U2 is connected with an external alternating current 220V zero line.
In the example device, a signal input 1 port of a signal conversion unit U3 is connected with an external signal E1, a signal input 2 port is connected with an external signal E2, a signal input 3 port is connected with an external signal E3, a signal input 4 port is connected with an external signal E4, a signal input 5 port is connected with an external signal E5, a signal input 6 port is connected with an external signal E6, a signal input 7 port is connected with an external signal E7, a signal input 8 port is connected with an external signal E8, and a signal input 9 port is connected with an external signal E9; a signal output port 1 of the signal conversion unit U3 is connected with an I/O _19 port of the main control module U6, a signal output port 2 is connected with an I/O _20 port of the main control module U6, a signal output port 3 is connected with an I/O _21 port of the main control module U6, a signal output port 4 is connected with an I/O _22 port of the main control module U6, a signal output port 5 is connected with an I/O _23 port of the main control module U6, a signal output port 6 is connected with an I/O _24 port of the main control module U6, a signal output port 7 is connected with an I/O _25 port of the main control module U6, a signal output port 8 is connected with an I/O _26 port of the main control module U6, a signal output port 9 is connected with an I/O _27 port of the main control module U6, and a zero line input port of the signal conversion unit U3 is connected with an external alternating current 220V zero line.
In the example device, the signal input 1 port of the signal conversion unit U4 is connected to the external signal W1, the signal input 2 port is connected to the external signal W2, the signal input 3 port is connected to the external signal W3, the signal input 4 port is connected to the external signal W4, the signal input 5 port is connected to the external signal W5, the signal input 6 port is connected to the external signal W6, the signal input 7 port is connected to the external signal W7, the signal input 8 port is connected to the external signal W8, and the signal input 9 port is connected to the external signal W9; a signal output port 1 of the signal conversion unit U4 is connected with an I/O _28 port of the main control module U6, a signal output port 2 is connected with an I/O _29 port of the main control module U6, a signal output port 3 is connected with an I/O _30 port of the main control module U6, a signal output port 4 is connected with an I/O _31 port of the main control module U6, a signal output port 5 is connected with an I/O _32 port of the main control module U6, a signal output port 6 is connected with an I/O _33 port of the main control module U6, a signal output port 7 is connected with an I/O _34 port of the main control module U6, a signal output port 8 is connected with an I/O _35 port of the main control module U6, a signal output port 9 is connected with an I/O _36 port of the main control module U6, and a zero line input port of the signal conversion unit U4 is connected with an external alternating current 220V zero line.
In the example device, the signal conversion unit U5 has a signal input port 1 connected to an external signal P1, a signal input port 2 connected to an external signal P2, a signal input port 3 connected to an external signal P3, a signal input port 4 connected to an external signal P4, a signal input port 5 connected to an external signal P5, a signal input port 6 connected to an external signal P6, a signal input port 7 connected to an external signal P7, a signal input port 8 connected to an external signal P8, and a signal input port 9 connected to an external signal P9; a signal output port 1 of the signal conversion unit U5 is connected with an I/O _37 port of the main control module U6, a signal output port 2 is connected with an I/O _38 port of the main control module U6, a signal output port 3 is connected with an I/O _39 port of the main control module U6, a signal output port 4 is connected with an I/O _40 port of the main control module U6, a signal output port 5 is connected with an I/O _41 port of the main control module U6, a signal output port 6 is connected with an I/O _42 port of the main control module U6, a signal output port 7 is connected with an I/O _43 port of the main control module U6, a signal output port 8 is connected with an I/O _44 port of the main control module U6, a signal output port 9 is connected with an I/O _45 port of the main control module U6, and a zero line input port of the signal conversion unit U5 is connected with an external alternating current 220V zero line.
In the embodiment device, a power supply input port of a power supply unit U7 is connected with an external alternating current 220V power supply, a power supply output port of a power supply unit U7 is connected with a power supply input port of a main control module U6, a communication interface _1 of the main control module U6 is connected with an external annunciator communication interface, a communication interface _2 of the main control module U6 is connected with a communication interface of a radio communication module U8, a communication interface _3 of a main control module U6 is connected with a communication interface of a network communication module U9, a communication interface _4 of the main control module U6 is connected with a communication interface of a bus communication module U10, and a communication interface _5 of the main control module U6 is connected with a communication interface of a satellite timing module U11.
In the example apparatus, the zero port of the signal converter a1 is connected to the neutral input, the zero port of the signal converter a2 is connected to the neutral input, the zero port of the signal converter A3 is connected to the neutral input, the zero port of the signal converter a4 is connected to the neutral input, the zero port of the signal converter a5 is connected to the neutral input, the zero port of the signal converter a6 is connected to the neutral input, the zero port of the signal converter a7 is connected to the neutral input, the zero port of the signal converter A8 is connected to the neutral input, and the zero port of the signal converter a9 is connected to the neutral input.
In the embodiment device, a solar panel B1 is connected with a port 1 of a diode D1, a power supply input port of a power supply conversion module B2 is connected with an external alternating current 220V power supply, a DC power supply output port of the power supply conversion module B2 is connected with a port 1 of a diode D2, a power supply input port of a DC/DC module B3 is connected with a port 2 of a diode D1, a port 2 of a diode D2 and a power supply interface of a battery power supply management module B4, a power supply output port of a DC/DC module B3 is connected with a power supply input port of a main control module U6, and a battery interface of a battery power supply management module B4 is connected with the battery B5.
In the embodiment, the signal conversion unit U1 converts the external signals N1 to N9 into TTL level signals respectively sent to I/O _1 to I/O _9 of the master control module U6, the signal conversion unit U2 converts the external signals S1 to S9 into TTL level signals respectively sent to I/O _10 to I/O _18 of the master control module U6, the signal conversion unit U3 converts the external signals E1 to E9 into TTL level signals respectively sent to I/O _19 to I/O _27 of the master control module U6, the signal conversion unit U4 converts the external signals W1 to W9 into TTL level signals respectively sent to I/O _28 to I/O _36 of the master control module U6, the signal conversion unit U5 converts the external signals P1 to P9 into TTL level signals respectively sent to I/O _37 to I/O _45 of the master control module U6, and the master control module U6 acquires the TTL control signals to acquire the control signals, and recording the time service time of the navigation satellite of each signal, obtaining a complete phase cycle through calculation, and transmitting the phase information to the radio communication signal lamp in each direction in real time through a radio communication mode.
In the embodiment device, when the external alternating current 220V power supply is normal, the system is powered by the DC power supply output by the power supply conversion module B2, and the battery U7 is charged through the battery power management module U4; when the external alternating current 220V power supply is dead, the system is powered by the solar panel B1 and the battery U7, and meanwhile, the solar panel B1 charges the battery U7 through the battery power supply management module U4; the DC/DC module U3 converts the power supply of the solar panel U1, the power supply of the power conversion module U2 and the power supply of the battery U7 into the power supply required by the main control module U6.
In the embodiment device, the signal converters in the signal conversion units U1, U2, U3, U4 and U5 are one of a photocoupling circuit and a comparator circuit, and the power conversion module B2 in the power supply unit U7 is one of an AC/DC circuit module and a DC/DC circuit module; the radio communication module U8 is one of a Zigbee communication module, a WiFi communication module, a Bluetooth communication module, a 4G communication module, a 5G communication module and a LoRa communication module; the bus communication module U10 is one of an RS485 bus communication circuit, an RS232 bus communication circuit, an I2S bus communication circuit, an I2C bus communication circuit and a CAN bus communication circuit; the satellite time service module U11 is one of a Beidou navigation satellite module, a GPS navigation satellite module, a Galileo navigation satellite module and a GLONASS navigation satellite module.
In the embodiment, the signal light control signal of the external traffic signal is divided into four directions of north, south, east and west for explanation. Wherein: the external signal N1 is a north direction ac 220V left turn red signal light signal, N2 is a north direction ac 220V left turn yellow signal light signal, N3 is a north direction ac 220V left turn green signal light signal, N4 is a north direction ac 220V straight red signal light signal, N5 is a north direction ac 220V straight yellow signal light signal, N6 is a north direction ac 220V straight green signal light signal, N7 is a north direction ac 220V right turn red signal light signal, N8 is a north direction ac 220V right turn yellow signal light signal, N9 is a north direction ac 220V right turn green signal light signal; the external signal S1 is a direction south alternating 220V left-turn red signal light signal, S2 is a direction south alternating 220V left-turn yellow signal light signal, S3 is a direction south alternating 220V left-turn green signal light signal, S4 is a direction south alternating 220V straight red signal light signal, S5 is a direction south alternating 220V straight yellow signal light signal, S6 is a direction south alternating 220V straight green signal light signal, S7 is a direction south alternating 220V right-turn red signal light signal, S8 is a direction south alternating 220V right-turn yellow signal light signal, S9 is a direction south alternating 220V right-turn green signal light signal; the external signal E1 is a 220V left turn red signal light signal for directional east ac, E2 is a 220V left turn yellow signal light signal for directional east ac, E3 is a 220V left turn green signal light signal for directional east ac, E4 is a 220V straight red signal light signal for directional east ac, E5 is a 220V straight yellow signal light signal for directional east ac, E6 is a 220V straight green signal light signal for directional east ac, E7 is a 220V right turn red signal light signal for directional east ac, E8 is a 220V right turn yellow signal light signal for directional east ac, E9 is a 220V right turn green signal light signal for directional east ac; the external signal W1 is a westernward 220V left-turn red signal light signal, W2 is a westernward 220V left-turn yellow signal light signal, W3 is a westernward 220V left-turn green signal light signal, W4 is a westernward 220V straight red signal light signal, W5 is a westernward 220V straight yellow signal light signal, W6 is a westernward 220V straight green signal light signal, W7 is a westernward 220V right-turn red signal light signal, W8 is a westernward 220V right-turn yellow signal light signal, and W9 is a westernward 220V right-turn green signal light signal; the external signal P1 is a 220V red traffic light signal for north direction communication, P2 is a 220V green traffic light signal for north direction communication, P3 is a 220V red traffic light signal for south direction communication, P4 is a 220V green traffic light signal for south direction communication, P5 is a 220V red traffic light signal for east direction communication, P6 is a 220V green traffic light signal for east direction communication, P7 is a 220V red traffic light signal for west direction communication, P8 is a 220V green traffic light signal for west direction communication, and P9 is a reserved traffic light signal.
Referring to fig. 4, the present device C2 is exemplified by a signal system including a traffic signal C1 and radio communication signal lamps C3 to C6.
Claims (7)
1. A traffic signal machine signal acquisition and transmission method is characterized in that: when the power supply of the traffic signal machine is normal, receiving an alternating current 220V signal lamp control output signal of the traffic signal machine, acquiring signal lamp phase control information, and sending the signal lamp phase control information to a radio communication traffic signal lamp in real time in a radio communication mode; memorizing or storing signal lamp phase period information and corresponding time information output by a traffic signal machine; a solar panel and a battery are used as a backup power supply; the required time adopts the time of the time service of the navigation satellite; the mode of acquiring the signal lamp phase control information comprises the mode of acquiring the signal lamp phase control information through data communication with a traffic signal machine and the mode of acquiring the signal lamp phase control information from an upper computer through network data communication.
2. The method of claim 1, further characterized by: when the traffic signal machine has power failure, the power supply is automatically switched to a battery or a solar panel to continue supplying power; and calculating according to the time service time of the navigation satellite, the memorized or stored signal lamp phase period information and the corresponding time information, generating signal lamp phase control information and sending the signal lamp phase control information to a radio communication traffic signal lamp in a radio communication mode.
3. The utility model provides a traffic signal machine phase place acquisition transmitting device which characterized by: the satellite time service system is composed of a signal conversion unit, a main control module, a power supply unit, a radio communication module, a network communication module, a bus communication module and a satellite time service module.
4. The apparatus of claim 3, wherein the signal conversion unit converts the control signal of the AC 220V signal lamp of the traffic signal machine into a TTL level signal to be sent to the main control module; the power supply unit is connected with an external alternating current 220V power supply, is provided with a solar cell panel, a battery, a power supply conversion module, a DC/DC module and a battery power supply management module and provides a power supply for the device; the radio communication module is communicated with the main control module through a wired communication port and performs radio communication with the outside; the network communication module is communicated with the main control module and is communicated with an external network; the bus communication module is communicated with the main control module and the annunciator; the satellite time service module receives signals of the navigation satellite and transmits the time of the navigation satellite to the main control module in a communication mode.
5. The device as claimed in claims 3 and 4, wherein the main control module receives the TTL level signal of the signal conversion unit and the time of the navigation satellite time service module, obtains the complete signal lamp phase period through calculation, and sends the signal lamp phase information to the radio communication signal lamp in real time through a radio communication mode, and meanwhile, the main control module memorizes or stores the signal lamp phase period information and the corresponding time information output by the traffic signal machine; the mode that the master control module acquires the signal lamp phase control information comprises the mode that the bus communication module is in data communication with a traffic signal machine, and the mode that the bus communication module is in network data communication is acquired from an upper computer.
6. The device as claimed in claims 3 and 4, when the external AC 220V power supply is powered, the output power supply of the power supply conversion module supplies power, and the battery is charged through the battery power management module; when an external alternating current 220V power supply is powered off, the solar cell panel or the battery supplies power, and when sunlight is sufficient, the solar cell panel charges the battery through the battery power supply management module.
7. The apparatus of claim 3, together with a traffic signal, a radio communication signal, and a complete traffic signal system.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114898583A (en) * | 2022-07-13 | 2022-08-12 | 深圳市城市交通规划设计研究中心股份有限公司 | Signal lamp control scheme determining method and data processing method of intelligent traffic equipment |
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