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Traffic detection sensor

A technology of sensors and sensor components, which is applied in the field of traffic detection systems, can solve the problems of single function of microwave radar video image processor, affecting the service life of roads, and poor compatibility of road surfaces, so as to ensure traffic safety and smoothness, and improve road surface utilization. , good durability

Inactive Publication Date: 2015-01-28
DALIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The induction coil detector needs to cut the road surface for layout, and its compatibility with the road surface is poor, which affects the service life of the road, and has certain requirements for the structure of the car, and the accuracy is average
[0004] Microwave radar, infrared sensor, and video image processor have single functions, are more expensive, have higher maintenance costs, and have poor performance in harsh environments (rain, snow, fog)
In addition, these detection technologies need to be in the working state for a long time during the use process, which consumes a lot of energy.

Method used

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Examples

Experimental program
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Embodiment 1

[0031] Embodiment one: if Figure 1-2 As shown, a traffic detection sensor includes a hard metal plate 5 and a sensor assembly 6, and the sensor assembly 6 includes a composite material sheet 3, an upper copper electrode 2, a lower copper electrode 4 and a wire 1; The electrode 2 and the lower copper electrode 4 are respectively pasted on the upper and lower surfaces of the composite sheet 3 by superglue, and then sprayed with a layer of protective sealing material; the upper copper electrode 2 and the lower copper electrode 4 are respectively connected to the wire 1;

[0032] The hard metal hard metal plate 5 is fixed on the lower copper electrode 4 by superglue; the composite material sheet 3 is made of a quantum tunnel effect composite material, and the manufacturing method of the quantum tunnel effect composite material includes the following step:

[0033] A, the thorn ball-shaped nickel powder is mixed into the liquid silicone rubber, and the mass ratio of the thorn bal...

Embodiment 2

[0037] Embodiment two: if image 3 As shown, the sensor components 6 adopt a distributed arrangement.

[0038] The present invention can be arranged on the surface layer of the existing road surface or bridge deck structure, and the length of the composite sheet can be the width of the existing road surface or bridge deck or half the width of the road surface or bridge deck; traffic detection sensors can also be arranged on the existing Expansion joints of road surfaces or bridge structures, etc. The present invention can be arranged on road sections where traffic parameter monitoring is required according to specific conditions.

[0039] Figure 4 is a typical signal spectrum when a vehicle passes a traffic detection sensor, the abscissa is time, and the ordinate is the voltage across the traffic detection sensor. The traffic detection sensor and a 15Ω resistor are connected in series in a 1.5V battery-powered circuit. When no vehicle passes by, the resistance of the traff...

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Abstract

The invention discloses a traffic detection sensor which comprises a sensor component and a hard metal plate. The sensor component comprises a composite sheet, an upper copper electrode, a lower copper electrode, a lead and the hard metal plate, the upper copper electrode and the lower copper electrode are pasted on the upper surface and the lower surface of the composite sheet through super glue respectively, then a protective sealing material is sprayed, and the composite sheet is made of quantum-tunnel effect composite materials. The traffic detection sensor is small in size, can be directly mounted on a road surface without cutting the road surface to monitor traffic and has the advantages that the traffic detection sensor is convenient to mount without damaging the road surface, the traffic detection sensor is rapid in response and high in accuracy owing to ultrahigh compression sensitivity, and the like. In addition, compared with other detection technologies such as a microwave radar (vehicle speed measurement), a video image processer (vehicle regulation violation) and the like, the traffic detection sensor can simultaneously and integrally monitor traffic data such as vehicle speed, vehicle flow, lane occupancy rate and vehicle types, cost can be greatly saved, and the use ratio of the road surface is increased.

Description

technical field [0001] The invention relates to a traffic detection system of an intelligent traffic management system, in particular to a traffic detection sensor. Background technique [0002] The intelligent transportation system (ITS) is a comprehensive transportation and management system that functions in a wide range in real time, accurately, efficiently and in an all-round way. The traffic detection system is an important part of the intelligent transportation system, responsible for collecting traffic flow, vehicle speed, vehicle head Traffic data such as spacing, traffic density, and lane occupancy. At present, there are many types of sensors used to collect these traffic data in the traffic detection system, such as electrical sensors, magnetic sensors, photosensitive sensors, and acoustic sensors. Among these sensors, the induction loop detector is the most commonly used traffic detection sensor due to its mature technology, low price and good robustness to the ...

Claims

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Application Information

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IPC IPC(8): E01F11/00
CPCE01F11/00G01D5/12G01D5/14G08G1/042
Inventor 韩宝国丁思齐刘威欧进萍
Owner DALIAN UNIV OF TECH
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