On-line gas sensor drifting correction method based on internet of things and mobile robot

A mobile robot, gas sensor technology, applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of pattern recognition algorithm accuracy or system stability decline

Inactive Publication Date: 2015-08-12
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Sensor drift can cause loss of accuracy or sys

Method used

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  • On-line gas sensor drifting correction method based on internet of things and mobile robot
  • On-line gas sensor drifting correction method based on internet of things and mobile robot

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Embodiment Construction

[0016] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Such as figure 1 As shown, the present invention proposes a gas sensor online drift correction method based on the Internet of Things and mobile robots, which includes the following steps:

[0017] Step 1: Arrangement and networking of sensor nodes. In an area that needs to be monitored, a grid sensor layout is adopted, that is, the area to be measured is divided into unit areas. The unit length and unit area are determined according to the sensing radius of the sensor. A sensor node is arranged in the center of each unit area, and the sensor data Through the wireless network transmission, the mobile robot carries the GPS module, ZigBee module and high-precision calibrated sensor array to access the network as a coordinator, and is in its initial position (generally selected in the center of the area).

[0018] Step 2: Determine the route for the mobil...

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Abstract

The invention discloses an on-line gas sensor drifting correction method based on an internet of things and a mobile robot, and belongs to the field of the drifting correction of a sensor. The method comprises the following steps: step I, distributing and networking sensor nodes; step II, determining a route for the mobile robot to traverse all the nodes, and implementing the route; step III, setting a plurality of time windows, so as to obtain a residual matrix and a drifting component matrix; step IV, correcting two matrixes of a previous time window to data of the current time window according to a given weight; and V, completing the online correction for the drifting of the sensor. By adopting the correction method, the on-line drifting compensation of the gas sensor can be realized, the reliability of a wireless sensor network can be improved, and the service life of a system can be prolonged.

Description

technical field [0001] The invention relates to the field of gas sensor drift correction, in particular to an online drift correction method of a gas sensor based on the Internet of Things and a mobile robot. Background technique [0002] As one of the three major components of information technology, sensor technology has been widely used. In particular, the development of electronic nose technology represented by gas sensors uses a sensor array composed of gas sensors (such as metal oxide sensors) with lower performance but cheaper prices, and uses the cross-sensitivity characteristics of gas sensors to combine intelligent information. Processing and pattern recognition algorithms make up for the gap in sensor performance, and can also achieve high detection accuracy. [0003] There are various problems in the gas sensor, and drift is one of the unavoidable phenomena. Due to its own reasons, the output signal of the gas sensor will fluctuate with the change of environmen...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 魏善碧柴毅周展邓萍唐健罗宇
Owner CHONGQING UNIV
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