Analysis on WPAN Mechanism Based on 802.15.4 and Data Structure Design

2014 ◽  
Vol 686 ◽  
pp. 434-438
Author(s):  
Zhi Wei Chen ◽  
Yu Ming Gan

IEEE802.15.4 is the communication protocol meeting the requirements of short distance and low transmission rate, and achieving the objective of low power. The technique is an emerging wireless communication standard. It is a two-way wireless communication technology with short distance, low complexity, low power consumption and low data transmission rate and low cost. The paper analyzes the features, framework,performance indicators and overall hardware platform structure of JN5121 chip which is used in JENNIC Corporation. And the paper researches the characteristics of actual products for project development.

2014 ◽  
Vol 926-930 ◽  
pp. 2213-2216
Author(s):  
Zhen Gang Yao

A wireless networking method for smart agricultural facilities was proposed in this paper. As ZigBee was a short distance, low complexity, low power cost, low data rate and two-way wireless communication technology, the wireless networking method was based on ZigBee. Network topology, hardware and software were designed in the paper.


1970 ◽  
Vol 1 (2) ◽  
Author(s):  
Gu Jiang Tao

With the popularization of smart phones and the continuous popularization of NFC near field communication technology, low-power short-range wireless communication technology is widely used in wireless meter reading. It is used for meter reading and compatibility in existing systems. This paper de-signs a wireless meter reading system based on short distance wireless communication technology and NFC. The system is stable, low cost and good versa-tility. The system is based on short distance wireless communication technology and NFC wireless meter reading system.


2014 ◽  
Vol 716-717 ◽  
pp. 1068-1071
Author(s):  
Mao Fa Gong ◽  
Fan Jiao Yin ◽  
Qiang Gu ◽  
Bao Ye Song ◽  
Yong Jin Yu

It is important for modern agricultural production to measure temperature and humidity in a real time way. This paper combined the short-distance wireless communication technology ZigBee with the long-distance wireless communication technology GPRS to design a solar-powered temperature and humidity measuring system. The system is easy to install and can run in low cost, so it is especially suitable for small and medium agricultural producers.


2016 ◽  
Vol 25 (2) ◽  
pp. 220-226 ◽  
Author(s):  
Yadong Yin ◽  
Lihong Zhang ◽  
Yuanting Yang

2012 ◽  
Vol 241-244 ◽  
pp. 2407-2410
Author(s):  
Xiao Yu Ge ◽  
Qing Hui Wang ◽  
Li Feng Wei

ZigBee is a kind of new wireless communication technology which is widely used in many fields. It is now widely recognized that ZigBee is suitable for short distance, low complexity, low power, consumption and low rate applications. One of the most important applications is embedded system. Standards of the physical layer and the data link layer are developed by the group of IEEE802.15.4 and the others are developed by ZigBee alliance. First of all, the paper introduces the application of ZigBee wireless communication network. Then the emphases are to build ZigBee wireless communication network and take advantage of Visual Basic to realize RSSI collection.


2013 ◽  
Vol 380-384 ◽  
pp. 811-814
Author(s):  
Qi Guo Yao ◽  
Yu Liang Liu

The ZigBee which was adopted low-power wireless communication technology was used to design a multi-parameters monitoring system according to agricultural monitoring characteristics. Following the design concepts of generalization and modularization, the sensors and functional modules could be combined configuration, thus the system was versatility, flexible and convenient. Low-power communication protocol and solar charging technology were adopted to extend the life of power supply. This system could be widely used for automatic monitoring in facility agriculture and other agricultural places.


2013 ◽  
Vol 397-400 ◽  
pp. 1918-1922
Author(s):  
Li Mei Wen

In the technology of temperature measurement, the sensor is an important part of system. But with the increase of the number of sensors, it will undoubtedly bring with a lot of data cable. Compared with wired communication technology, wireless communications technology has the advantages of low cost, simple structures, low impact of environment. So the wireless communication technology meeting with the requirements of data communications has become a more practical, fast and efficient way. This paper describes a multi-channel temperature monitoring system using nRF905 wireless transmission module, STC89C52RC MCU and DS18B20 temperature sensor as core. Functions such as sampling, analysis, display, alarm and others can be done automatically by the system, dates transmitted by wireless module, and the system can realize the function of real-time monitoring of temperature.


Sensors ◽  
2018 ◽  
Vol 18 (7) ◽  
pp. 2351 ◽  
Author(s):  
Vladimir Risojević ◽  
Robert Rozman ◽  
Ratko Pilipović ◽  
Rok Češnovar ◽  
Patricio Bulić

Wireless sensor networks can provide a cheap and flexible infrastructure to support the measurement of noise pollution. However, the processing of the gathered data is challenging to implement on resource-constrained nodes, because each node has its own limited power supply, low-performance and low-power micro-controller unit and other limited processing resources, as well as limited amount of memory. We propose a sensor node for monitoring of indoor ambient noise. The sensor node is based on a hardware platform with limited computational resources and utilizes several simplifications to approximate more complex and costly signal processing stage. Furthermore, to reduce the communication between the sensor node and a sink node, as well as the power consumed by the IEEE 802.15.4 (ZigBee) transceiver, we perform digital A-weighting filtering and non-calibrated calculation of the sound pressure level on the node. According to experimental results, the proposed sound level meter can accurately measure the noise levels of up to 100 dB, with the mean difference of less than 2 dB compared to Class 1 sound level meter. The proposed device can continuously monitor indoor noise for several days. Despite the limitations of the used hardware platform, the presented node is a promising low-cost and low-power solution for indoor ambient noise monitoring.


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