ZigBee Communication Research Articles

MULTITASKING REAL-TIME SCHEDULING IN A ROBOT

This paper deals with loading artificial functions to a robot based on scheduling. Here, scheduling is the one which is used to avoid the delay between appplications. Based on RTOS scheduling has been done. Using zigbee communication the indications are given to the monitoring section. The semantic time scheduling is done to run all applications at a time without any time delay. The paper involves two sections 1. Robot module and 2. Monitoring section. The robot section deals with the data receiving from sensor nodes without any delay. The robotic section runs with RTOS and LPC2929 and acts as master node to which sensors are connected. In the monitoring section the data

Design and Simulation of a Meteorological Data Monitoring System Based on a Wireless Sensor

A system for observing meteorological data based on a wireless sensor network (WSN) is designed to fulfill the business requirements for meteorological data observation in unattended areas. The WSN is based on the ZigBee communication protocol, which can implement a system with low power consumption, self-organizing capability, and a large scope. The hardware design is based on the CC2530 chip, which is the first ZigBee system on chip produced by the TI company. The WSN designed by the improved distance vector-hop localization algorithm for a wireless sensor using simulation software demonstrates the effectiveness of the algorithm. The system ensures the accuracy and reliability of the meteorological observation data.

Impulsive noise rejection for ZigBee communication systems using Error-Balanced Wavelet filtering

The physical (PHY) layer of ZigBee communication systems was defined by IEEE 802.15.4 and has good external white noise resistance due to its spread spectrum characteristic and error correction of the baseband coding process. However, previous research has shown the performance of ZigBee to degrade in the presence of impulsive noise. In this regard, an improvement of the ZigBee receiver is warranted in order to improve the decoding process. A novel Error-Balanced Wavelet filtering approach utilizing the multiresolution property is proposed to suppress the impact of impulsive noise prior to symbol detection and thus improve the bit error rate (BER) performance of the ZigBee demodulation process. This assessment is based on computer simulations and verifies that the overall transmission performance is improved by our proposed approach. The results obtained are also compared with existing impulsive noise suppression approaches and it is shown that our wavelet-based method outperforms other methods in improving the system BER.

전력설비 관리를 위한 무선 및 유선 통신 방법에 관한 고찰

Power plants maintenance data is to be sent to management server system via a communication network. In this case, reliable communication network is required. Transmission of the power plants maintenance data is used in the wired communication network or wireless communication network. PLC communication network is a kind of wired communication network. However PLC communication network is easily affected by noise. On the vulnerable areas in power line system, such as a mountain or rural areas, it is difficult to form a power line communication network. For a wireless communication, environment are also influenced factors in wireless communication. Harsh environmental factors are bring the communication characteristic degradation. In such areas it can be used a combination of two networks and in this way the complementary function can be achieved. Power plants are distributed in various regions across the country. The appropriate communication network is needed to maintain the power plant.This study investigated the effect of environment on the wired communication and wireless communication. It would examine a variable factor which is affect to the communication characteristic. We used PLC communication for wired communication network and ZigBee communication for wireless communication network. We investigated the characteristics of a single communication network and it raised the need for a complex communication technology to complement a single communication network.

A Key Management Scheme for ZigBee in AMI of Smart Grid

Advanced metering infrastructure (AMI) is a critical part of the smart grid, and ZigBee is playing an increasingly important role in AMI. The cyber security is the prerequisite to ensure the reliable operation of AMI. To guarantee the ZigBee communication security in AMI, a key management scheme based on the elliptic curve cryptosystem (ECC) is proposed. According to the ways of information transformation in AMI, the scheme is categorized as unicast communication key management process and multicast communication key management process. And in the scheme, the selection of elliptic curve, the calculation of ZigBee node's ECC public key and private key, the establishment and distribution of the link key in unicast communication, and the establishment and distribution of the network key in multicast communication are elaborated. The analysis results show that the proposed key management scheme is secure, and consumes less memory and energy, thus, can meet the demands of communication security of AMI.

효율적인 전시공연을 위한 멀티 소형 휴머노이드 로봇제어

In this paper, we designed a multi humanoid robot control method for performing an exhibition that will maximize the efficiency and user convenience and implementation. In recent years, an increasing number of case and to take advantage of the robots in the field performances and exhibitions, plays, musicals, orchestra performances are also various genres. In concert with the existing small humanoid exhibition to source from outside by using a computer and MP3 player and play, while pressing the start button of communication equipment for the show to start the robot began performing with the zoom. Thus, due to the dual source and robot operation and synchronization does not work well is the synchronization of the start of the concert sound starting point of the robot and robot motion and sound are reproduced separately were frequently occurs when you need to restart the show. In addition, when the center of gravity or lose the robots who were present during the performance problems such as performance or intervene to restart the show. In order to overcome this, in this paper, Multi-small humanoid robot was designed to control the efficiency and the user of the GUI-based human interface S/W to maximize convenience, Zigbee communication to transmit a plurality of data in al small humanoid It was used. In addition, targeting a number of the small humanoid robot demonstrated the effectiveness and validity of the user's convenience by gender actual implementation.

Design and Implementation of an IoT Access Point for Smart Home

Network communication and micro-electro-mechanical embedded technologies have attracted much attention in recent years. Through these technologies, the capabilities of sensing, identification, and communication can be embedded in various smart devices. These smart devices can automatically connect to the Internet and form an intelligent network called Internet of Things (IoT). However, these devices are embedded with different wireless communication interfaces such as Wi-Fi and ZigBee. This paper presents the design and implementation of an IoT access point that supports functionalities of coordination of various wireless transmission protocols. Based on the existing Wi-Fi access point, we have embedded a ZigBee module and implemented ZigBee and UPnP protocols into the designed IoT access point, which supports ZigBee communication capabilities over the Internet.

Research on Home Healthcare Management System Based on the Improved Internet of Things Architecture

This paper designs an improved internet of things architecture to redefine the internet of things architecture into the node domain, the network domain and the application domain so as to design and implement a home healthcare management system based on this improved internet of things architecture. In this way, all of the equipments characterized with Zigbee communication function in the blood pressure measuring node, the blood oxygen measuring node and the ECG measuring node can be connected to the internet through the Zigbee-Wifi gateway. Meanwhile data uploaded by the users can be stored and analyzed on the backend server of the internet of things so that the users can review their health data and control the node devices through the intelligent terminals such as cell phone etc. Taking the blood pressure measurement as an instance, the experiment has proved the feasibility and reliability of this system.

스마트폰의 블루투스 통신을 이용한 다중 오브젝트 제어방법 및 장치에 관한 융합연구

Abstract Since the advent of Apple’s iPhone, the smartphone industry has been producing new technologies and concepts at an accelerated pace. The speed of progress in this sector is exponentially increasing in accordance with Moore’s Law, and smartphones are rapidly changing various aspects of human life. Especially, object control technologies using smartphones are being utilized in various sectors, including robots, home automation, and smart objects. However, the current smartphone object control technology is limited in terms of multicontrol. This study proposes the combined usage of the Bluetooth and Zigbee Modules for multiple object control using smartphones, and presents the necessary application design properties and the methodology for Zigbee communication. The study is an attempt at a territorial expansion of design, as a proposal of new methods for utilizing smartphones in the age of smart objects. Key Words : Multiple smart objects control, Bluethooth, Zigbee, Wireless communication, MCU, Digital Convergence

햅틱피드백 장치를 이용한 시각장애인 이동보조시스템

In this paper we propose a walking aid system for blind people by exploiting a haptic feedback equipment. The proposed system is a form of haptic feedback cane which is composed of MCU, communication module, sensing module and actuator. The proposed system recognizes obstacles around the blind by using ultrasonic sensors in the sensing module. Moreover, the system generates feedback information about the detected obstacle and then notifies the information to the blind through the actuator. The blind can notice the direction of the detected obstacle with the haptic feedback equipment and vibration motor. Futhermore, the proposed system controls a nearby IoT(Internet of Things) system by utilizing push buttons through the ZigBee communication. Finally, the blind can easily decide the direction of the obstacle without interference of terrain feature by using the proposed system.

태양광 발전 시스템의 스마트 모니터링 기술개발

This paper presents a smart monitoring technique for photovoltaic power systems by using wire and wireless communication networks in which the RS-232/484 and the Zigbee communication networks are inherently established respectively. In the proposed monitoring systems, environmental data sequences and the output power measured by sensors in photovoltaic systems are transferred to PC systems via two communication networks. We made electronic hardware boards for sensors and communication networks to construct its real-time monitoring system and carry out experiments for demonstrating reliability of the proposed monitoring system.

A Low-cost Wireless Water Quality Auto-monitoring System

The water quality monitoring plays an important role in water contamination surveillance and guides the water resource protection for safe and clean water. A flexible automated real-time water quality monitoring and alarm system based on the wireless sensor network(WSN) is proposed. The WSN is built in accordance with Zigbee communication protocol, which consists of the sensor nodes, route nodes and coordinator node. The sensor nodes based on cheap and efficient sensors (pH electrode, dissolved oxygen electrode, temperature senor) and wireless transreceiver collect the environmental data and transmit to the coordinator node via the route nodes. The data are sent to the remote monitoring center with the help of GPRS. The time synchronous algorithm is adopted to wake up all the nodes in the network to improve the stability and reliability of the communication. The long-time measurement results verify the real time and accuracy in data acquisition and stability and reliability in communication. The system meets the requirements of water quality monitoring, and has great practical value.

A Low Cost, Highly Scalable Wireless Sensor Network Solution to Achieve Smart LED Light Control for Green Buildings

Reducing energy demand in the residential and industrial sectors is an important challenge worldwide. In particular, lights account for a great portion of total energy consumption, and unfortunately a huge amount of this energy is wasted. Light-emitting diode (LED) lights are being used to light offices, houses, industrial, or agricultural facilities more efficiently than traditional lights. Moreover, the light control systems are introduced to current markets, because the installed lighting systems are outdated and energy inefficient. However, due to high costs, installation issues, and difficulty of maintenance; existing light control systems are not successfully applied to home, office, and industrial buildings. This paper proposes a low cost, wireless, easy to install, adaptable, and smart LED lighting system to automatically adjust the light intensity to save energy and maintaining user satisfaction. The system combines motion sensors and light sensors in a low-power wireless solution using Zigbee communication. This paper presents the design and implementation of the proposed system in a real-world deployment. Characterization of a commercial LED panel was performed to evaluate the benefit of dimming for this light technology. Measurements of total power consumption over a continuous six months period (winter to summer) of a busy office were acquired to verify the performance and the power savings across several weather conditions scenarios. The proposed smart lighting system reduces total power consumption in the application scenario by 55% during a six month period and up to 69% in spring months. These figures take also into account individual user preferences.

The application of ZigBee phase shift measurement in ranging

This paper describes the initial assessment of the phase shift measurement unit embedded in a ZigBee communication device. Such a device can provide a very good base for a range-based indoor positioning or proximity detection system. The paper gives a description of the device and shows the results of test measurements. Tests were performed in various conditions: multipath free, outdoor environment, severe multipath indoor environment and dynamic environment with moving transceiver. The examples of results are depicted and conclusions are drawn. The phase shift measurement technique in the radio frequency (RF) network can increase the use of this networks in the area of localization based services. ARTICLE INFO

Ad hoc communication in teams of mobile robots using zigbee technology

ABSTRACTMobile robots developed at the Institute of Systems and Robotics (ISR) Coimbra feature ZigBee technology for inter‐robot communication. The main aim of this paper is to implement and validate ad hoc wireless communication functions between robotic teammates using the ZigBee technology, thus integrating and developing the features of the XBee Original Equipment Manufacturer Radio Frequency module via standard Arduino Serial Commands. This work provides a useful instructive tool for research, enabling the interaction and cooperation of a team of mobile robots in areas such as swarm robotics, multi‐robot patrolling, search and rescue, among others. In order to validate the functional requirements, several experiments were performed at the level of peer communication, namely: i) analysis of the Received Signal Strength Indication (RSSI) of messages by peers to estimate inter‐robot distances for localization purposes; ii) analysis of the communication complexity in experiments with large groups of mobile robots using Zigbee communication modules and its application in a real world exploration scenario. © 2015 Wiley Periodicals, Inc. Comput. Appl. Eng. Educ. Comput Appl Eng Educ 23:733–745, 2015; View this article online at wileyonlinelibrary.com/journal/cae; DOI 10.1002/cae.21646

Zigbee통신을 이용한 전력변환기기의 DC Bus 커패시터의 온라인 원격 고장진단 시스템

Zigbee통신을 이용한 전력변환기기의 DC Bus 커패시터의 온라인 원격 고장진단 시스템

A Web based Observance and Alerting for Underground and Fish Pond Water Quality

is one amongst the foremost necessary and basic natural resources. This approach of constant observance and alerting of underground and fish pond water shall promote the implementation of actions that will forestall human sickness caused thanks to consumption of poor quality of water and to develop health Fish Lake. This project proposes a sensing element primarily based pollution detection and alerting to the licensed agent via SMS and e-mail. The key parameters taken under consideration during this work are pH scale level, temperature, Dissolved Oxygen(DO) for fish lake water and therefore the water level, Total dissolved solids (TDS) were thought of for underground water. These parameters were detected by the corresponding sensors associated and are sent to the microcontroller unit wherever it is compared with the set point and invokes an alarm according it. The LCD display interfaces with the microcontroller unit to reveal this noninheritable parameter of water. Further, these parameters were sent to the base station through the wireless Zig-Bee communication module. Web site is maintained to store parameter of water and therefore the agent will read the water quality through web site (www.watermonitoringsystem.in). Once water parameter is not acceptable for drinking purpose then associate E-Mail and SMS alert is given to the user. KeywordsLCD, Microcontroller, Sensors, Zig-Bee technology

Design of 3D Space Following Positioning System Based on ZigBee

The research on positioning system and spatial alignment is a big topic. In this paper, we proposed a design (that) studies two issues. One is the study of range positioning algorithm based on ZigBee communication system. The other one is spatial alignment platform which is controlled with two servos. Hardware and software control system was realized, which also consists of two parts, ZigBee network positioning system and automatic orientation platform.

Self-Sustained Debacle Repression Using Zig-Bee Communication

If an accident happens, nature of the humans is to criticize somebody else instead understanding the mistake. Finally, European study says that in 80% of vehicle accidents especially motor vehicles, drivers criticize the other person instead of preventing the accident. In our assessment, we consider conditions of traffic in India. For any accident to happen, major cause is speed of the driver. So, we should go for new methods to eradicate such type of problems. Assessment of accidents are done to identify the reason or series of accidents that are occurred and to avoid fresh accidents of the same type. So, we are going for Self-sustained Debacle Repression method identified by the combination of different independent solutions. An SDR development shape tomorrow’s safe. It also comes with collision avoidance Mechanisms such as: Avoiding the collision using Ultrasonic Sensor and ARM processor and Collision Indication (car-to-Xs Communication) using ZIGBEE technology.

A wireless swing angle measurement scheme using attitude heading reference system sensing units based on microelectromechanical devices.

Feasible real-time swing angle measurement is significant to improve the efficiency and safety of industrial crane systems. This paper presents a wireless microelectromechanical system (MEMS)-based swing angle measurement system. The system consists of two attitude heading reference system (AHRS) sensing units with a wireless communication function, which are mounted on the hook (or payload) and the jib (or base) of the crane, respectively. With a combination of a three-axis accelerometer, a three-axis gyroscope and a three-axis magnetometer, the standard extended Kalman filter (EKF) is used to estimate the desired orientation of the payload and the base. Wireless ZigBee communication is employed to transmit the orientation of the payload to the sensing unit mounted on the base, which measures the orientation of the base. Because several physical parameters from the payload to the base can be acquired from the original crane control system, the swing angles of the payload can be calculated based on the two measured orientation parameters together with the known physical parameters. Experiments were performed to show the feasibility and effectiveness of the proposed swing angle measurement system.