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Traffic monitoring sensor and detection method

A technology for monitoring sensors and traffic, applied in the field of monitoring sensors, can solve problems such as increasing the cost of sensors and increasing the burden of using sensor networks

Active Publication Date: 2013-10-23
BEIJING INST OF NANOENERGY & NANOSYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, whether it is radar speed measurement, electromagnetic speed measurement, oil pressure speed measurement and weight measurement, the sensors for measuring vehicle speed and vehicle weight need external power supply, which greatly increases the cost of such sensors: On the one hand, the external power supply equipment itself requires a certain cost input; on the other hand, the maintenance and power transmission of this power supply equipment also increase the use burden of this sensor network.

Method used

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  • Traffic monitoring sensor and detection method

Examples

Experimental program
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Effect test

Embodiment 1

[0046] The traffic monitoring sensor of the present embodiment is used to detect the traffic flow on the road, see figure 2 , the nano-generator N1 is set on the road, when the vehicle passes the nano-generator N1 according to the traveling direction S, the mechanical force generated by the driving of the vehicle acts on the nano-generator N1, so that the nano-generator N1 generates electrical signals such as voltage or current, That is, the nanogenerator N1 is used to detect the mechanical force generated by the passing of the vehicle and form an electrical signal; the detection device receives the electrical signal and records the waveform and peak time of the electrical signal, and records the number of peaks generated per unit time, and obtains the Describe traffic flow.

[0047]In this embodiment, the nano-generator N1 can be set on the track of the vehicle tires (that is, the road surface), and the vehicle directly rolls the nano-generator N1. In this setting, the fron...

Embodiment 2

[0061] In this embodiment, the traffic monitoring sensor is used to detect the speed of vehicles on the road, see Figure 5 , the traffic monitoring sensor includes two nanogenerators N2 and N3 separated by a fixed distance L1 which is smaller than the distance L2 between the front and rear wheels of the vehicle. The detection device connected to the nano-generators N2 and N3 detects the peak value of the electric signal generated by the vehicle passing through the two nano-generators, and records the time difference of the peak value to obtain the speed of the vehicle. Specifically, when the front tires of the vehicle pass the nanogenerator N2 in the direction of travel S, the mechanical force generated by the driving of the vehicle acts on the nanogenerator N2, causing the nanogenerator N2 to generate electrical signals such as voltage or current, and the detection device receives the Electric signal and record the waveform, peak value and peak time t2 of the electric signal...

Embodiment 3

[0070] In this embodiment, the traffic monitoring sensor is used to detect the weight of the vehicle on the road, see Figure 6 The nano-generator N4 of the traffic monitoring sensor is set on the track of the vehicle tire to detect the pressure of the vehicle on the road surface and form an electrical signal, and the detection device connected to the nano-generator N4 detects the electrical signal generated by the vehicle passing through the nano-generator N4 , obtaining the weight of the vehicle according to preset parameters.

[0071] When the vehicle is crushed by the nano-generator N4, the weight of different vehicles will have different strains on the nano-generator, so the output voltage (or current) signal of the nano-generator is also different. Therefore, in the detection of vehicle weight, it can be Measurements were performed using nanogenerators. Parameters such as the size of the electrical signal generated by the pressure of different weights on the nanogenerat...

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Abstract

The invention provides a traffic monitoring sensor and a detection method. The traffic monitoring sensor comprises a nano-power generator and a detector, wherein the nano-power generator is used for detecting the mechanical force when a vehicle passes and forming an electric signal; the detector is used for detecting and analyzing the electric signal generated by the nano-power generator to obtain road traffic information; the road traffic information comprises traffic flow, vehicle speed and vehicle weight. Correspondingly, the invention also provides a traffic detection method. The traffic monitoring sensor provided by the invention is a self-driving sensor based on the nano-power generator, and can collect the mechanical energy in the vehicle motion and convert the mechanical energy into electric energy for supplying power for the detector, so an externally connected power supply is not needed, the cost and equipment maintenance are reduced, and the use burden of a sensor network is reduced.

Description

technical field [0001] The invention relates to the field of traffic detection, in particular to a monitoring sensor and a detection method for real-time monitoring of traffic flow, vehicle speed, vehicle weight and other information. Background technique [0002] The sensor network used for real-time monitoring of vehicle flow, vehicle speed and vehicle weight on the road is of great significance for maintaining the normal operation of public transportation and timely detection of speeding and overweight illegal vehicles. [0003] In the prior art, whether it is radar speed measurement, electromagnetic speed measurement, oil pressure speed measurement and weight measurement, the sensors for measuring vehicle speed and vehicle weight need external power supply, which greatly increases the cost of such sensors: On the one hand, the external power supply equipment itself requires a certain cost input; on the other hand, the maintenance and power transmission of the power suppl...

Claims

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Application Information

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IPC IPC(8): G08G1/01G08G1/052G08G1/065G01P3/66G01G19/03
Inventor 王中林林龙胡又凡
Owner BEIJING INST OF NANOENERGY & NANOSYST
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