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Wireless sensor-based detecting and positioning method for pollution source close to impervious boundary

A technology of wireless sensor and positioning method, which is applied in the direction of testing water, material inspection products, etc., and can solve the problems of high cost, long cycle, and poor operability

Inactive Publication Date: 2012-09-19
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing detection and positioning methods of water pollution sources mainly include remote sensing technology, underwater robot positioning technology, and manual detection and positioning technology, but the above methods have many disadvantages, such as high cost, poor operability, long cycle, etc.

Method used

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  • Wireless sensor-based detecting and positioning method for pollution source close to impervious boundary
  • Wireless sensor-based detecting and positioning method for pollution source close to impervious boundary
  • Wireless sensor-based detecting and positioning method for pollution source close to impervious boundary

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] A method for detecting and locating pollution sources near impermeable boundaries based on wireless sensors, the steps of which are:

[0093] Step 1. Deploy wireless sensor nodes near the impervious boundary to be tested

[0094] Randomly distribute 10 sensor nodes near the impermeable boundary to be measured (that is, lake water within 1m from the shore or dam), and the coordinates of the sensor nodes are (x i ,y i )(i=1,2,3....10), sensor nodes (x i ,y i )(i=1,2,3....10) is connected with the terminal node by radio frequency, the terminal node is wirelessly connected with a gateway, and the gateway is connected with the PC through a serial line; the PC is equipped with a software management system, The software management system includes a pollution source detection module, a pollution source diffusion stage analysis module, a first positioning module and a second positioning module.

[0095] Step 2. Detection of water pollution sources near impermeable boundaries...

Embodiment 2

[0187] A method for detecting and locating pollution sources near impermeable boundaries based on wireless sensors, the steps of which are:

[0188] Step 1. Deploy wireless sensor nodes close to the impermeable boundary

[0189] With embodiment 1.

[0190] Step 2. Detection of water pollution sources near impermeable boundaries

[0191] Except following technical parameter, all the other are with embodiment 1.

[0192] 10 sensor nodes (x i ,y i )(i=1,2,3....10) there are 5 sensor nodes (x i ,y i )(i=1,5,6,7,10) detects that the concentration of ions in the water body is C i (t), the detected water ion concentration C i (t) As shown in Table 2.1, namely C i (t)-0.1mg / l≥10mg / l, then the sensor node (x i ,y i )(i=1,2,3....10) detects the presence of a pollution source close to an impervious boundary.

[0193] Table 2.1 Sensor nodes (xi ,y i )(i=1,5,6,7,10) the ion concentration of the water body detected at time t

[0194]

[0195] Step 3. Steady state judgment of...

Embodiment 3

[0244] A method for detecting and locating pollution sources near impermeable boundaries based on wireless sensors, the steps of which are:

[0245] Step 1. Deploy wireless sensor nodes

[0246] In addition to sensor nodes (x i ,y i ) (i=1, 2, 3....15) is 15, and the others are the same as in Embodiment 1.

[0247] Step 2. Detection of water pollution sources near impermeable boundaries

[0248] Except following technical parameter, all the other are with embodiment 1.

[0249] 15 sensor nodes (x i ,y i )(i=1,2,3....15) there are 6 sensor nodes (x i ,y i )(i=1,5,6,7,10,13) detects that the concentration of ions in the water body is C i (t), the detected water ion concentration C i (t) As shown in Table 3.1, namely C i (t)-01mg / l≥10mg / l, then the sensor node (x i ,y i ) (i = 1, 5, 6, 7, 10, 13) detects the presence of a pollution source close to an impervious boundary.

[0250] Table 3.1 Sensor nodes (x i ,y i )(i=1,5,6,7,10,13) detects the ion concentration of w...

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Abstract

The invention relates to a wireless sensor-based detecting and positioning method for a pollution source close to the impervious boundary. The method comprises the following steps: n sensor nodes are randomly distributed at areas close to the impervious boundary to be detected and are connected with a terminal node in an RF (Radio Frequency) manner; the terminal node is in wireless connection with a gateway which is connected with a PC through a serial port line; a management software is installed in the PC; the sensors detect whether the pollution source exists or not through a detection module in the management software; the nodes detecting out the pollution source are saved and compared with a steady-state concentration difference value Delta c in an analyzing module at a pollution source diffusion stage and then enter a positioning module 1 or 2, so as to obtain the position coordinates of the pollution source detected by the corresponding nodes; and finally, the position coordinates of the pollution source detected by all the nodes are averaged to serve as the position coordinate of the pollution source. The method provided by the invention has the characteristics of strong operability, high accuracy and low cost, and is tally with the practical pollution discharge situation.

Description

technical field [0001] The invention relates to the technical field of detection and positioning of pollution sources close to impermeable boundaries, in particular to a method for detecting and locating pollution sources close to impermeable boundaries based on wireless sensors. Background technique [0002] In recent years, water environment protection has received more and more attention from all walks of life, and the detection and location technology of pollution sources in water environment has become an important part of environmental protection. Usually, water pollution comes from the discharge of waste water and waste residue from factories near the shore. Therefore, the detection and location technology of pollution sources near the lake, that is, pollution sources near impermeable boundaries, is very important for finding pollution sources, protecting and improving the environment, and ensuring drinking water for human beings. Security matters. [0003] At presen...

Claims

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Application Information

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IPC IPC(8): G01N33/18
Inventor 柴利栾凡杨君
Owner WUHAN UNIV OF SCI & TECH
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