ZigBee Wireless Transmission Technology Research Articles

Research on Fault Detection Method of Photovoltaic Module

With the rapid development of large-scale photovoltaic power plants, the fault detection of photovoltaic modules has become an urgent problem. This paper studies the principle of fault detection of photovoltaic modules and the detection method based on ZigBee wireless transmission technology is proposed. It uses the ADC module on CC2530 to measure the voltage of three reverse parallel diodes in the photovoltaic module junction box, and sends the data collected by the terminal to the coordinator through ZigBee wireless transmission technology, and then according to the change of the voltage to determine fault location. In addition, this paper also proposes a fuzzy control algorithm to determine the fault type of PV module and design the corresponding fuzzy controller in MATLAB. The fault detection method presented in this paper is simple, reliable and low cost, and can accurately detect the fault location of photovoltaic modules. Therefore, it has practical significance for the efficient operation of photovoltaic power station.

Intelligent Fishpond Monitoring System Based on STM32 and Zigbsee

The study is designed to monitor the temperature and dissolved oxygen content in the fishpond, especially to ensure that dissolved oxygen content in the fishpond is enough for aquaculture. This fishpond monitoring system is designed based on stm32 and Zigbee wireless transmission technology. This study uses Zigbee to build up a sensor network to monitor multi fishponds. Data acquisition unit consist of temperature sensor and dissolved oxygen sensor. The sensor data is transfered from the data acquisition unit to the stm32 master controller. These data can be used to generate a control strategy, which can control the oxygen-enriching machine to produce enough oxygen for aquaculture in the most optimized way. The data transformation between master controller and data acquisition is through Zigbee protocol radio communication, which is a reliable means to transfer data. Experiments results show that this fishpond monitoring system can achieve remoting monitoring and control dissolved oxygen content in an effective way. By controlling the dissolved oxygen in the fishpond, the system can increase the production of the aquaculture and decrease the breeding cost.

Research on two-layer heterogeneous wireless control network framework at airport with silent mechanism

Based on characteristics such as airport construction difficulties and high demands of confidentiality as well as demands of bird strike prevention, a new wireless control network framework in the bird repellent system is put forward. By introducing shortwave radio technology and ZigBee wireless transmission technology, the remote and close wireless transmission technology combined two-layer heterogeneous wireless control network at the airport is built. To reduce the times of signal shock occurred in the process of transmission, equipment silent mechanism is put forward, and silent time and duration can be calculated according to the geographical location of facilities. To improve the system robustness, a variety of transmission protocols are designed, which can guarantee smooth signal transmission at the utmost when system facilities break down. The actual engineering application results prove valid for this design.

Zigbee Technology in the Application of Remote Monitoring System of Tubular Furnace

In view of the problem about off-line monitoring lagging and the high cost of cable transfer with present traditional petrochemical enterprise, this article provides remote monitoring system design and implementation of the heating furnace based on the Zigbee wireless transmission technology. Specifically, configuration software can realized real-time monitoring of furnace combustion condition by sending detected smoke real-time data which goes through flue gas analyzer to Siemens PLC, and transferring it to the industrial computer by Zigbee wireless transmission technology. Simulation result shows that the system has well real-time performance and low power consumption advantages which can complete effective monitoring in the wireless environment of furnace combustion state.

Construction Site Environment Temperature Monitoring System Based on ZigBee and Virtual Instrument

Temperature is one of the important factors that ensure the quality and safety of construction. According to the characteristics of construction site environment, an automatic multi-channel real-time monitoring system of construction site environment temperature is developed based on virtual instrument technology. Combined with ZigBee wireless transmission technology, this system can realize remote real-time temperature monitoring for construction site. The system hardware consists of main controller, gateway, wireless sensor nodes and thermocouple temperature sensors. The temperature information is collected by thermocouples. Through wireless sensor network nodes, the data is sent to main controller terminal via gateway. LabVIEW graphical programming language is used for program design. The function of real-time remote temperature information data display, data analysis, limiting value alarm, trend monitoring and data storage for multiple objects simultaneously is realized in this system. And the developed automatic temperature monitoring system can provide support for the temperature-related management of construction site.

Indoor Open Spaces Precious Device Regulatory System Design Based on Internet of Things

To study the design of the indoor open places precious device regulatory system based on Internet of Things, the system uses a star structure, with intelligent alarm control center, using distributed monitoring terminal, automatic detection of invasive behavior in arming monitoring area, the alarm signal is generated. Alarm control center of the system is mainly based on the ARM processor core hardware platform and embedded Linux operating system development; monitoring terminal use the SOC chip CC2530-core hardware platform; Zigbee wireless transmission technology is used to communicate between the control center and monitor terminal.

Designing an industrial real-time measurement and monitoring system based on embedded system and ZigBee

With the increasing automation of factories, factory floors are being covered with machinery. Spaces crowded with machinery are more difficult and dangerous for personnel to operate in. This system attempts to uses the ZigBee embedded system to improve industrial safety quality. In addition to performing existing typical monitoring functions, this system utilizes ZigBee wireless transmission technology for remote monitoring. The measurement items of the industrial applications of this system platform include length filtering, ground vibration sensing, weight grading, electricity sensing, energy monitoring, temperature monitoring, and carbon dioxide concentration. Our application of ZigBee combined with an embedded system to industrial real-time measurements represents an innovative technology. In addition to discussing the system platform in this study, we also discuss statistics and analysis of measurement data. Performing wired and wireless synchronized measurement and monitoring using this system can achieve correct and efficient industrial monitoring operations.