Road surface state detection sensor as well as detection system and detection method thereof
A technology for detecting sensors and road conditions, applied in the field of information sensing and collection, can solve problems such as unsatisfactory detection results, unsuitable road ice and water condition detection, affecting road traffic, etc. small effect
Inactive Publication Date: 2013-04-03
SOUTHEAST UNIV
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Problems solved by technology
[0004] The problem to be solved by the present invention is: the existing capacitive detection device used for ice water detection is not suitable for detection of ice water state on the road surface, which will affect road traffic, and the detection effect is not ideal at the same time
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[0031] Such as figure 2, the sensor is composed of three layers of metal and low dielectric constant glue. The three layers of metal are respectively inner core, middle ring and outer ring from the inside to the outside. , the four-petal flower shape is a centrally symmetrical figure, and the contour line is a smooth arc, such as: four circles of the same size intersect at one point, the four circles are evenly distributed, and a section passes between adjacent circles at the same time as the described Two adjacent circles are connected by tangent arcs to obtain a smooth outer contour, that is, the four-petal flower shape is obtained. The cross-section of the middle ring corresponds to the part of the hollow core, and the center of the four-petal flower shape coincides with the center of the inner core circle; the outer ring The cross-sectional shape is circular, which is partially hollow corresponding to the cross-sectional shape of the middle ring, and the cross-sections of...
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Abstract
The invention discloses a road surface state detection sensor as well as a detection system and a detection method thereof. Based on the capacitance principle, a ring capacitor is used as the detection sensor arranged on a road surface and used for detecting the dry, wet or frozen state of the road surface, after the detection sensor is excited by an external square wave of an exciting circuit, the output waveform of the detection sensor varies as electrical parameters in sensitive parts vary, and surface covering is deduced based upon different waveform variations. The road surface state detection sensor provided by the invention can provide the dry, wet and frozen states of road surface without impacting on road flatness, and has the advantages of small impact on the road surface, superior detection effect and good consistency of the detection result with the actual condition of road surface.
Description
technical field [0001] The invention belongs to the technical field of information sensing and collection, is used for detecting dry, wet or frozen state of road surface, and relates to a road surface state detection sensor, a detection system and a detection method thereof. Background technique [0002] With the rapid development of highway construction in our country, the monitoring and maintenance of highway construction is becoming more and more important. During the actual use of highway pavement, factors such as temperature, moisture, and load will have an adverse effect on the entire pavement structure, and greatly increase the probability of traffic accidents, resulting in great property and life losses. [0003] Ice water inspection has always been a very important item in road surface condition detection, and there is no relevant mature technology available for sensor measurement in this area. Most of the existing ice water measurement technologies are based on th...
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IPC IPC(8): G01N27/22
Inventor 殷刚毅丁卯黄庆安
Owner SOUTHEAST UNIV