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Beidou based unified time-service system device of traffic signal lamps and working method of device

A technology for traffic signal lights and timing systems, which is applied to radio-controlled timers, instruments, etc., can solve problems such as high cost, large labor and material resources, and achieve high accuracy, reduce traffic pressure, and save labor.

Active Publication Date: 2017-02-01
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many experts and scholars have proposed solutions for Beidou timing service. For example, Chinese patent document CN205692395U discloses "A Wireless Synchronous Traffic Signal Light Device Based on Beidou Timing Service", but this technical solution is only to design a Beidou timing device. Every traffic signal light must The cost of loading Beidou modules is high, and the installation of equipment consumes a lot of manpower and material resources

Method used

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  • Beidou based unified time-service system device of traffic signal lamps and working method of device
  • Beidou based unified time-service system device of traffic signal lamps and working method of device
  • Beidou based unified time-service system device of traffic signal lamps and working method of device

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Embodiment 1

[0030] A kind of unified time service system device of traffic lights based on Beidou, comprising a client and a server; the client includes a Beidou satellite signal receiving module and an NTP server module; the server includes, in the same subnet with GPRS / the traffic signal light of the CDMA module; the Beidou satellite signal receiving module includes a GNSS module.

[0031] The NTP server module distributes time information downwards: the NTP server module distributes time signals downwards as the initial node. The traffic lights include multiple levels, and the traffic lights of each level have the function of receiving and forwarding, and forward the traffic lights of the next level. Time signal, and communication between traffic lights at the same level to correct each other's time.

Embodiment 2

[0033] Utilize the method for the unified time service of traffic signal lamps as described in embodiment 1, comprise solving authorized time flow process, comprise step (1) and step (2):

[0034] (1) the Beidou satellite signal receiving module receives the Beidou timing time signal, and forwards the time signal to the NTP server module;

[0035] (2) The NTP server module calculates the correct time according to the international standard resolution protocol.

[0036] It also includes the traffic light timing time synchronization process, including steps (3)-steps (6):

[0037] (3) the NTP server module sends an NTP message with a time stamp t1 to the receiver on the traffic light, and the t1 refers to the moment when the NTP information leaves the NTP server module;

[0038] (4) When the receiver of the traffic signal light receives the NTP information described in step (3), then send the NTP information of the step (3) to the NTP server module, and load the NTP information...

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Abstract

Provided is a Beidou based unified time-service system device of traffic signal lamps. The device comprises a client and a service end; the client comprises a Beidou satellite signal reception module and an NTP server module; the NTP server module distributes time information by taking the NTP server module as an initial node, each level of traffic signal lamps has receiving and forwarding functions, and transmits time signals to the next level of traffic signal lamps, and the traffic signal lamps in the same level communicate with each other to correct time. According to the invention, the Beidou satellite and NTP time service are used to implement unified time service on the traffic signal lamps in the sparsely distributed network structure in the city, it is ensured that the traffic states of crossings in the city are monitored and managed in real time and buses take priority, and the device and method have significance in alleviating traffic jams.

Description

technical field [0001] The invention relates to a Beidou-based unified timing system device and working method for traffic signal lights, belonging to the technical field of intelligent transportation. Background technique [0002] Nowadays, urban congestion is increasing day by day, and optimization strategies such as bus priority and real-time optimization of itinerary in electronic maps have been developed accordingly. The premise of these optimization strategies requires real-time phase monitoring of signal lights. Controlling the phase state of traffic lights requires synchronization of the time signals of traffic lights. How to efficiently, accurately, and real-time uniformly time service urban traffic lights is an urgent problem at present. [0003] Many experts and scholars have proposed solutions for Beidou timing service. For example, Chinese patent document CN205692395U discloses "A Wireless Synchronous Traffic Signal Light Device Based on Beidou Timing Service". ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04R20/04G04R40/06
CPCG04R20/04G04R40/06
Inventor 邢建平李东辕丁大海田欣玉
Owner SHANDONG UNIV
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