Intelligent vehicle speed prompting driving system based on mobile phone

A driving system and mobile phone technology, applied in the field of intelligent transportation system, can solve the problem of no traffic light information, etc., and achieve the effect of low cost and reasonable speed suggestion

Inactive Publication Date: 2014-03-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But in most cases, the traffic department ...

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  • Intelligent vehicle speed prompting driving system based on mobile phone
  • Intelligent vehicle speed prompting driving system based on mobile phone
  • Intelligent vehicle speed prompting driving system based on mobile phone

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Embodiment Construction

[0032] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings through specific embodiments:

[0033] The smart vehicle speed prompt driving system based on mobile phone provided by the present invention is operated by smart mobile phone and Internet server, and the specific operation process is as follows:

[0034] Step 1: Use crowdsourcing to collect the GPS and acceleration information of the mobile phone on the vehicle, and transmit the data to the server at a certain time through the wireless network;

[0035] The functions used by the mobile phone are:

[0036] 1) 3-axis accelerometer

[0037] The smartphone's accelerometer measures the acceleration applied to the phone, including gravity, in the phone's body coordinate system. In addition to the accelerometer, Android also provides an accelerometer-based gravimeter, which is used to estimate the direction and magnitude of gravity in the body coord...

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Abstract

The invention discloses an intelligent vehicle speed prompting driving system based on a mobile phone. The intelligent vehicle speed prompting driving system comprises the mobile phone on a vehicle and a server. According to the work processes of the mobile phone and the server, the GPS and accelerated speed information of the mobile phone on the vehicle are collected in a crowdsourcing mode, and data are transmitted to the server through a wireless network at certain time; the positions of road junctions with traffic lights are determined through an accelerated speed vector distribution map and a GPS path; a road is represented by using a secondary B spline; the accelerated speed events of each road junction are collected in a crowdsourcing mode, and the time tables of the traffic lights of the road junctions are deduced; the optimal speed is prompted for the vehicle according to a generated map and the time tables of the traffic lights of the front road junctions, and the situation that the vehicle meets a red light at the road junctions and stops is avoided as far as possible. On one hand, the map is generated though a new method, and on the other hand, the deduction of the time tables of the traffic lights at the complex road junctions is solved through a road junction structure.

Description

technical field [0001] The invention relates to an intelligent traffic system, in particular to a mobile phone-based intelligent vehicle speed prompt driving system. Background technique [0002] Today, traffic lights dominate urban traffic, coordinating the safe passage of vehicles on different roads through intersections. But because drivers lack traffic light information, it is difficult for them to adopt an appropriate speed while driving, so they often have to stop and wait for a red light when they reach an intersection. This stop-and-go driving pattern leads to more energy consumption, air pollution, traffic congestion and safety accidents. In 2011, road congestion cost U.S. city dwellers an additional 5.5 billion hours of time and 2.9 billion gallons of gasoline, totaling an additional $121 billion, according to the Texas Transportation Institute. [0003] Therefore, we hope to dynamically adjust traffic signal timing to adapt to traffic flow, or inform drivers of ...

Claims

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Application Information

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IPC IPC(8): G08G1/0962H04W4/04
Inventor 赵亦燃张阳张哲慧甘小莺田晓华杨峰王新兵
Owner SHANGHAI JIAO TONG UNIV
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