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Monitoring method for remaining power of wireless sensor network node and device thereof

A technology of wireless sensors and remaining power, applied in the field of sensor networks, can solve the problem of high estimation accuracy

Active Publication Date: 2014-05-28
ZHEJIANG UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the above-mentioned shortcomings of the prior art, and provides a method and device for monitoring the remaining power of a wireless sensor network node, and realizes online rapid estimation of the remaining power when the sensor node continues to work or cannot be left standing for a long time , and the estimation accuracy is higher

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  • Monitoring method for remaining power of wireless sensor network node and device thereof
  • Monitoring method for remaining power of wireless sensor network node and device thereof
  • Monitoring method for remaining power of wireless sensor network node and device thereof

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Embodiment Construction

[0057] The present invention will be further described below in conjunction with the drawings.

[0058] Reference Figure 1 ~ Figure 5 , A device for monitoring the remaining power of a wireless sensor network node, including a data collection module 102 for sampling battery voltage, current, and temperature, a Flash storage module 103 for storing data, and a voltage conversion for powering devices and sensors The module 105, the battery charging module 104, and the embedded microprocessor 106 for receiving and processing battery-related data of the data collection module; the data collection module 102 is connected to the embedded microprocessor 106 through an I2C bus.

[0059] The battery 101 detected by the device is a rechargeable lithium ion or lithium ion polymer battery. The embedded microprocessor 106 can be an independent microprocessor or shared with the microprocessor in the wireless sensor node, and the wireless sensor node can pass through figure 2 The expansion slot...

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Abstract

The invention provides a monitoring method for remaining power of a wireless sensor network node. The method comprises steps of building a lithium battery RC?equivalent model to obtain a state equation after discretization, estimating the current state variable value, updating an estimation variance and calculating Kalman gain according to the variance, updating state?variable battery remaining power?SOC and battery open circuit voltage, and comparing voltage in a register with the battery open circuit voltage obtained in the former step. A device using the method comprises a data acquisition module for sampling voltage, current and temperature of the battery, a Flash memory module for storing data, a voltage conversion module for providing power for the device and the sensor, a battery charging module, and an embedded microprocessor for receiving and processing relative battery data of the data acquisition module, and the data acquisition module is connected with the embedded microprocessor via an I2C bus.

Description

Technical field [0001] The present invention relates to the technical field of sensor networks in communication, and in particular to a device for monitoring the remaining power of a wireless sensor network node. Background technique [0002] With the advancement of microelectronics technology, MEMS technology, technical technology, and wireless communication, as well as the needs of industry and civilian use, more and more wireless sensor networks are used in production and life. Due to the small size of the general wireless sensor node, the harsh environment of the node, the large number of nodes and the random distribution, etc., the energy carried by them is generally very limited. Sensor networks usually use the time when the first failed node appears as a standard to measure the life cycle of wireless sensor network nodes. In most cases, the limited battery energy carried by the node is often the main factor causing the limited working time of the node. The power failure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 顾东袁杨东勇何伟卢瑾傅晓婕王杰周龙朱超峰
Owner ZHEJIANG UNIV OF TECH
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