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This paper proposes the implementation of a simple fuzzy logic controller (FLC) for a DC-DC boost converter based on a microcontroller to obtain maximum power from the solar system with the maximum power point tracking (MPPT) method. The system includes a solar panel, DC-DC boost converter, the fuzzy logic controller implemented on Arduino Uno for controlling on/off time of MOSFET of the boost converter, voltage divider and optocoupler circuit. This paper presents a fuzzy logic real time code in the Arduino language for ATmega328 microcontroller on the Arduino UNO board. The designed system increases the efficiency of the solar panel based on experimental results.

Today competitive manufacturing requires innovative approaches in the production management, as well as for customer satisfaction. Production management requires an effective and efficient maintenance management system. One approach to improve the performance of the maintenance system is through the implementation of Total Productive Maintenance (TPM). The key performance index to measure the effectiveness of TPM implementation is Overall Equipment Effectiveness (OEE). The TPM activities will eliminate equipment losses related to availability, performance rate, and quality rate. Hence, the TPM implementation will increase the OEE value. This paper outlines the theories of TPM and OEE. The paper also presents the studies carried out by different authors to show the improvement of OEE through implementation of TPM in manufacturing, such as electronic industry, steel manufacturer, as well as locomotive components manufacturer.

The paper presents the development of a smart sensor system that is used for measuring pipe network parameters. The developed sensor is intended for use with in pipe inspection robots that can independently explore and evaluate the constructive parameters and the condition of the pipe network. The proposed system is developed around the Atmel ATMega16 microcontroller which is connected to a set of sensors and to the robot. The sensor system was tested using the ROBIN250 mobile robot and the obtained results are presented in the paper.

This paper presents design and application of foot modules in exoskeleton. Detecting the walking phase and intent is most important data for controlling the wearable exoskeleton. The zero moment point (ZMP) trajectory in the robot foot support area is significant criterion for a stability of the walk. The ZMP is calculated by measured force / torque data and Force / Torque sensor (F/T sensor) can measure that. But, the thick foot module is inconvenient to walking. For such a reason, most foot modules are developed using the film type sensors such as force sensing resistor (FSR), ground contact sensor such as tape switch and so on. In this paper, the foot modules equipped optimal design of 3-axis F/T sensor and ground contact sensor are presented and experimental application of detecting the walking phase using both sensors is introduced.

The automotive ECU, as a core component of automotive electronics, needs constant update to meet the performance requirements of the vehicle. Traditional methods, which rely on the professionals’ operations to update, cannot meet the development of vehicle network. The authors propose an automotive ECU remote update scheme in this paper. A remote download system that implements convenient and real-time automotive ECU updates is built in this paper. The system takes the mobile phone as an intermediary to communicate between the remote server and the onboard platform. Finally, the feasibility of the scheme is verified via experiments.

This paper is concerned with the design and implementation of a ZigBee based wireless sensor and actuator networks, which has been applied in our service robot intelligent space successfully. Firstly, an overview of ZigBee protocol is given, and then the design and implementation of hardware module and software stack of ZigBee based wireless sensor and actuator networks are addressed in detail. Some representative devices are described, including environmental sensors for environmental perception, home devices controllers for device control, IMU module for abnormal behaviors detection, locating system for node localization and laser robot control for service robot navigation. Application example is described to demonstrate how the devices in ZigBee based wireless sensor and actuator networks to provide service cooperatively. Finally, we conclude this paper and discuss the future directions.

This is a review paper written to discuss the lean manufacturing and the lean weaknesses in manufacturing industry. Lean production or also known as lean manufacturing has been widely practiced as a production improvement tool in manufacturing sectors. Lean manufacturing originated from Japanese automotive manufacturing sectors for about five decades. Over the decades, lean production system have evolved from shop floor improvement tool to a philosophy. The problem statement in this research was to review the weaknesses of lean production system. The purpose of this review paper is to discuss the weaknesses of the lean production system and overview the available methods to address the weaknesses. Limitation and scope of this paper were within manufacturing industry and period of literature reviews. The methodology applied was review literature from the lean manufacturing related journals dated from year 2000 to 2014. Then by consolidating the lean production weaknesses data in to categories of people, material, equipment, know-how, business and planning or scheduling. The authors discussed to elaborate further on the lean weaknesses and methods of addressing it. Therefore, understanding the weaknesses will allow the academic and industry to co-create new solution methods for an effective lean production system. In conclusion, the authors view the weaknesses as an opportunity to integrate with other theories such as agile manufacturing, sustainable development, human factor, safety management and cleaner production in the future.

In this paper, we try to solve the problem of mine safety and real-time scheduling in underground miner, the Monte-Carlo localization methods of the underground location system based on ZigBee wireless sensor network were proposed. This paper designs software application for the nodes in the network, builds the overall structure of the miner location system and constructs the ZigBee wireless network. After testing and simulation, the results indicate that we can locate precisely in the complex terrain and terrible communication environment by the Monte-Carlo Localization algorithm.

In the bit interleaving coded modulation (BICM-ID) solution,includes the demodulator and decoder into the iteration and decoding process, and the decoding is completed between demodulator and decoder. In studies, it have been found that the oscillation is generated on logarithmic likelihood ratio (LLR) because the soft information generated by all previous BP iterations is ignored in this solution, so that the BP soft information output by the final BP iterative decoding is not always reliable. In this paper, the above problem is solved by optimizing the iterative demodulation and decoding solution. Aiming at this problem, this paper firstly puts forward a kind of optimization scheme about iterative demodulation and decoding, then the simulation analysis, the result show that, under the premise of ensuring the system complexity basically unchanged, can improve the demodulation and decoding performance of LDPC coded modulation and demodulation system.

In this paper, the overview of ZigBee technology is firstly introduced. Futhermore, in order to evaluate the feasibility of voice communication over ZigBee network, this paper takes ZigBee as a wireless communication technology to investigate wireless voice communication. The results show that the voice communication based on ZigBee technology turn out to be effective.

Aiming at the deficiencies of traditional PID control algorithm, the application of Fuzzy PID control algorithm is proposed in variable frequency speed regulation system of glass edge grinding machine. The design of fuzzy PID controller is presented in the paper. The paper not only introduces the system principle and models for inverter and AC asynchronous motor but also tells the principle of Fuzzy PID Controller and its design method. A simulation model including traditional PID Controller and Fuzzy PID Controller is established in MATLAB/Simulink. Through the analysis of the difference between the two controlling outputs, the better performance of Fuzzy PID Controller in response speed, accuracy and stability is proved effectively. The result can be used as important criterion to the practical application of Fuzzy PID control algorithm.

In this paper, we focuse on the study of parameter optimization problem of the uniform scalar dead zone quantizer (USDZQ).We used particle swarm optimization (PSO) algorithm and ant colony optimization (ACO) algorithm for the optimization. We used the two kinds of optimization algorithm for ECG signal coding test.Those ECG signals were from the MIT-BIH arrhythmia database. At the end of this paper, the results of compression are compared.

WSN (Wireless sensor network) using ZigBee has aroused people’s high interest, ZigBee is considered to be a general solution in many fields such as intelligent household, industrial application, security monitoring and medical application. But wireless sensor network can only provide service within a certain range, in order to overcome this limitation and provide remote application capacity, this paper proposes a technological solutions for the interconnection of ZigBee network and the Ethernet, develops a ZigBee gateway based on ARM platform. Based on the analysis of the ZigBee protocol stack and TCP/IP protocol stack, the protocol conversion mechanism of ZigBee and TCP/IP is presented. Through transplantation LwIP protocol stack, this paper achieves the goal of connecting gateway to Internet, and finally realizes the conversion from ZigBee network to TCP/IP network.

Nowadays, communication protocols are used in safety-critical automotive applications. Among the communication protocols, FlexRay, with real-time and reliable characters, is expected to become the communication backbone for future automotive systems. Therefore, a DC motor speed control system based on FlexRay network is presented in this paper to verify these characters. The following works have been done in this paper: study the FlexRay protocol specification, design the structure, programming, analyze the test results to get transmission delay time. Using the test system, FlexRay network was verified that message can be transferred quickly and correctly.

ZigBee wireless network technology was introduced in traditional on-line monitoring system, and the wireless online monitoring function was realized in this paper. The system is mainly composed by ZigBee coordinator node and ZigBee sensor network. The network coordinator node is the control center, and its responsibilities are network maintenance and the data processing. The sensor terminal nodes are composed by a variety of sensors and ZigBee wireless module which distributed in monitoring area, and its responsibilities are the data acquisition and transmission. The innovations of this paper are the power supply mode and improving the efficiency. In this paper, the battery power and small CT power was combined for power supply, and the data fusion and the clustering routing algorithm was used to improve the efficiency.

Internet of Things is a key component of next generation information technology. And Radio-frequency identification (RFID) is one of the key technologies of Internet of Things. RFID technology is widely used for supply chain management and inventory control. Furthermore, RFID has been recognized as a tool to realize a ubiquitous environment. This paper introduces a complete solution of UHF RFID reader system based on LPC1768 microprocessor and AS3992 UHF Reader chip for the Internet of Things. The UHF RFID reader uses the MCU chip of LPC1768 as main controller, which provides excellent multimedia performance. This reader uses AS3992 UHF RFID reader chip, which conforms to ISO18000-6B and ISO18000-6C (EPC global class 1 gen 2) standards. The operating frequency is 840~960MHz, which can be adjustable by users. This paper gives the complete hardware design of the UHF RFID reader.

Aiming at solving the incompatibility and interoperability among multiplexed sensor elements in complicated system, the paper designed a XML-based TEDS for networked sensors, The paper introduced XML technology, analyzed the TEDS defined in IEEE1451.2. In virtue of XML, integrated IEEE 1451.2 with XML technology, the designed TEDS parsed a wide variety of transducer’s information; the XML-based TEDS applied in heterogeneous system proved to a viable means of achieving interoperability.

This paper is concerned with a wireless receiving link evaluation method using statistical means of received signal strength indicator (RSSI) and link quality indicator (LQI) based on the IEEE 802.15.4 protocol for wireless sensor networks. Traditional methods using single RSSI and single LQI based on the IEEE 802.11 protocol have the disadvantage of the inaccurate evaluation. In this paper, we carry out a quantitative emulation experiment via computing statistical means of RSSI and LQI based on wireless sensor networks protocol of IEEE 802.15.4. Tested numerical values are analyzed using MATLAB and SPSS by defining the wireless link evaluation sensitivity. Result curves of RSSI to packet reception rate (PRR) and LQI to PRR we finally derive are shown that statistical means of RSSI and LQI can obtain the status information of receiving links more accurately, compared with the traditional wireless link evaluation using single RSSI and single LQI.

This paper mainly summarizes four kinds of solar power generation. They are solar roof, photovoltaic power station in space, solar power tower and solar hot air power generation technology. And the paper also contrasts these four kind solar power generation from the viewpoints of technology, power generation efficiency and cost, which provides references for solar power design.

This paper elaborates the control of environmental factors in the modern industry and agriculture, and according to the problem that the temperature and the humidity is hard to control automatically, this paper puts forward the design of the greenhouse automatic control system based on MSP430 single chip microcomputer. This design mainly introduces the overall design scheme of the automatic control system, and the use of the properties of various hardware based on MPS430, which mainly include temperature transmission sensor DS18B20 and the humidity transmission sensor CHR01. And then use the environmental control factor algorithm and numerical conversion fuzzy algorithm, so as to realize the temperature and humidity control system.

There have been recent research interests in obtaining an optimum efficient design for the solar tracking system in published papers over the past three decades. This paper presents an in-depth overview of the assessment parameters and characteristics of various sensor devices employed to provide precise feedback control mechanism used in dynamic solar tracking systems. We found that the webcam sensor device has superior capability compared to other solar sensors devices. In conclusion, we propose a future research direction for a better efficiency and effective dynamic solar tracking system. Keywords: Solar tracking; Solar sensors; Solar panels; Overall output generated energy; Webcam; Photoresistors; Photodiodes; Feedback Control mechanism

A real-time wireless sensor network (WSN) based on Zigbee technology is introduced in this paper. Sensing data, such as atmospheric pressure, temperature, humidity, orientation, illumination, wind speed and direction, can be captured in real time. It is designed with a RF MCU CC2530 and Zstack protocol of TI Corporation. The overall architecture of the system, detailed hardware design, and process of the system software are described in this paper. Experiment results show that this system operates stably, and has small delay, which will have a certain practical value.

This paper introduces a design of the High Precision Electronic Scale Design Based on MCU, Hardware circuit reaches data processing by the control unit which based on MCU, and The MCU gathers data by weighting sensor, then the LM331 makes V/F transform, and the transformed data then transferred to MCU for display processing. At last, the LCD would show it out steadily without twinkling. The paper mainly puts forward the scheme and software design idea, hardware design.

The application of 3G techniques in the field of embedded system has become one of the hotspots in recent years. This paper designs a CDMA2000 1x smart home system based on Cortex-M3 MCU(micro control unit). The performance of Cortex-M3 based embedded system is analyzed compared with ARM7 platform in terms of code density. From the analysis, it is proved in the paper that ARM Cortex MCU meets the requirement of emerging embedded smart home system.

The technical features of RFID and sensor network, and inherits the RFID radio frequency signal characteristic of automatic target recognition, at the same time, the implementation of a wireless sensor network active perception and communication function. This paper analyzed the wireless sensor network integration of ZigBee and RFID technology; each node can be coordinated in real-time monitoring, sensing and collecting network of regional distribution of a variety of environmental or monitoring information. The paper puts forward the development of wireless sensor network based on ZigBee and RFID technology. Wireless sensor network is Zigbee and GSM is used for data communication based on sensor networks.

This paper introduces the theory of photovoltaic battery and gives circuit model of the battery. Its Simulink simulation model and the output characteristic curve are achieved by the derivation of the circuit model. It also introduces the working principle of MPPT and different kinds of MPPT algorithm. The paper focuses on the implementation of the Conductance Increment Method , and carries on the simulation results.

This paper presents the chip design strategy of resistance type humidity readout circuit for greenhouse application. The designed chip includes resistance change type humidity readout circuit, temperature compensation circuit, low voltage dropout generator (LDO), and analog to digital convertor (ADC).The humidity sensor which used in this research is HCZ_H8, and it is produced by Ghitron Company .Because resistance change type humidity sensor depends much on the temperature, so this paper develops a temperature sensing circuit to compensate the effects caused by the temperature change. The ADC in this research is13-bit fully-differential incremental delta sigma A/D converter, and the power supply is 3.3v, but the power supply of the humidity readout circuit is 5v, so a low voltage dropout generator (LDO) is included to match the power supply.

This paper mainly introduces FlexRay, a high speed, real-time and high reliability bus technology, and researches network topology structure and network communication protocol of FlexRay bus. Then this paper points out that the premise of analyzing FlexRay protocol is catching the bus data transmission, and designs a data acquisition and analysis system with FreeMASTER software and Tektronix TDS3012B digital phosphor oscilloscope. In order to verify the accuracy of the software FlexRay interface design, this paper also describes the analysis and verification procedure of the timing sequence of FlexRay bus. Lastly, this paper reminds of the application prospect of this system.

Solar energy utilization has met some complicated problems in recent years, like energy storage, solar thermal power generation dispatchability and grid connection etc. The concept of hybrid solar power systems proposed in early researches has extended the conditions of exploiting solar power generation technology，this paper reviews hybrid solar power system technologies in the past 40 years. According to different complementary energy resources, hybrid solar/renewable energy and solar/conventional energy systems have been discussed in this paper. Particularly, this article presents the thermal and economic performances of Integrated Solar Combined Cycle System (ISCCS).

This paper designs a web-based Arduino supervisory control system. Arduino controller is utilized as a local controller to fit into a supervisory control framework. The framework includes a central server, a SMS device attached to the server, multiple local controllers, a remote control program and a ladder logic computer-aided design program. The Arduino controller contains an Arduino USB board and an Ethernet shield. The USB board provides basic input/output and processing power, while the Ethernet shield provides TCP/IP connection capability. The Arduino controller communicates with supervisory server with a specific m2m protocol which is based on http protocol. In this paper, the http protocol and m2m protocol is fulfilled based on TCP connection in an Arduino controller. Once an Arduino controller is plugged into the supervisory control system, it can be monitored and controlled remotely with any browser. The web-based Arduino supervisory control system is used to provide remote supervisory control service of water pumping systems of multistorey buildings scattered in big Taipei area by a small company.

In the acoustic emission fault diagnosis, the acoustic emission sensors was installed on the bearing pedestal where near from the fault source so that can collected stronger fault AE signal, however ,sometimes, it is inconvenience for AE sensor installation. This paper proposed that install the AE sensor on the base for collect the fault AE signal, but the signal was weak, so carried on EMD first, and selected the former 8 IMF to construct the original feature, than carried on KPCA for dimensionality reduction and get the optimized feature. In this paper, taking bearing acoustic emission test for example, by compared the base fault feature with the bearing pedestal fault feature, verified that the method that the AE sensor install on the base is feasible.

This paper described the theory, source and effect of the vibration of the block making machine. The paper analyzed the situation of beneficial vibration and harmful vibration. The author improved the traditional vibration device of block making machine. The new type of block making machine realized harmless vibration and high efficiency.

Development of Internet of things, the application of embedded Internet technology will be wide. This paper introduces characteristic of embedded Internet technology, concludes and compares resolutions of how to connect embedded equipment to Internet. At the same time, this paper analyses characteristic of embedded TCP/IP protocol and present method for developing embedded TCP/IP protocol.

Urban underground pipeline was an important part of urban public infrastructure, and it was lifeline of cities. Application research of urban underground pipeline management information system also was important to urban underground pipeline manager, and we could manage underground pipeline efficiently when we depended on 3D technology. The paper introduced data model of pipeline network, and introduced how to establish basic 3D objects class of urban underground pipeline management information system. We realized the 3D underground pipeline network and completed the query and network analysis of underground pipeline. Finally the paper provided a preview and conclusion of underground pipeline management information system.

In this paper, we present a modeling of the photovoltaic array in order to tracking the maximum power point (MPPT) using a soft computing approach based on artificial neural network, The maximum power point tracking MPPT play a crucial role in photovoltaic systems for their ability to maximize the power output under varying conditions; The photovoltaic array modeled and implemented in matlab simulink environnement using the conventional perturb and observe algorithm for multiple ranges under varying temperatures and irradiances levels, a feed forward neural network collect the training data from the photovoltaic array simulink model, after the training process check, the neural network model tested with new temperatures and irradiance data to predict the maximum power point of the photovoltaic array, The developed neural network model shown an interesting results compared to simulink model based on classic perturb and observe algorithm.

WSN’s practical application has high level of spontaneity in positioning information and is susceptible to the outside interference, which may lead to the reduction of positioning accuracy. This paper studies Gauss distribution function, the single sensor batch estimate fusion theory and RSSI positioning technique based on the design of the CC2430/1 wireless sensor network positioning system hardware and puts forward a kind of positioning algorithm of WSN based on the Gauss distribution function and batch estimation fusion theory. The algorithm first uses Gauss model to analyse RSSI, reject RSSI value of a small probability event through the Gauss model, and then applies single sensor batch estimation fusion theory to estimate in batches the fushion theory’s calculation of the RSSI value of high probability events as the RSSI value of the final positioning operation. Experiments show that using this algorithm, the positioning precision of the system can be improved to be within 0.5 meters.

This paper investigates the usage of Arduino microcontroller to control closed loop of IPMC actuator response designed for compact underwater application. We demonstrate control of single Ionic Polymer Metal Composite (IPMC) actuator by PID controller using MATLAB/Simulink Arduino Input Output (ArduinoIO) support package. Experimental results show that the microcontroller able to differentiate response speed and stability of IPMC actuator with different thicknesses. Based on Arduino data acquisition results, thinner IPMC (t1) has more than 5 times respond speed than thicker IPMC (t2). However, IPMC t1 has lower steady-state stability (higher noise) compared to IPMC t2 due to IPMC actuator mechanism factors and current setup limitation for Arduino microcontroller. Therefore, added with further improvements in term of analog read sampling rate and analog write resolution, Arduino microcontroller can accurately control and analyse the IPMC actuator, thus manage to replace expensive and bulky current DAQ hardware.

Solar tracker is a device that detects the movement of the sun. Solar tracker receive maximum sun ray in order to produce the maximum power supply by the photovoltaic (PV) panels system. It also depends on the environment factor such as solar irradiation and temperature of the panels. This paper presents the development of the automatic solar tracking system, the construction of the sensor circuit, programming of the control system and also its performance analysis. This automatic solar tracking system is designed with an electronic circuit control using PIC that can trigger the dc motors when the LDR sensors detect sunlight. DC motor will move vertical and 360 ̊ horizontal to increase efficiency of sunlight to the solar panel. Solar panel for the project gets power supply from the battery. The battery will be charged using power from the solar panel.

FlexRay bus is considered as a more promising bus in the future with the performance of real-time, scalable, and fault-tolerant. In this paper we will design an electric vehicle battery management system (BMS) based on FlexRay bus, including the hardware design, the SoC estimation method, FlexRay protocol design and software development. The test bench experiment results show the system design is reasonable and feasible.Keywords- FlexRay, BMS, Li-ion battery,SoC, Design

This paper presents a mathematical model of photovoltaic with buck converter to analyze the voltage and current as a result of radiation and temperature changes as the input signal. Photovoltaic simulator models created using the C programming integrated with Matlab Simulink. The IP controller is used to control the current of a buck converter with the reference current from the dynamic model of photovoltaic. The control signal from the IP controller is used for generating a PWM signal, which is used to drive the IGBT gate of the buck converter. Input of irradiance and temperature are given to the photovoltaic simulator. Moreover, the current and voltage of the buck converter are used as a feedback to the photovoltaic simulator. This experiment is run through the system in real time and the simulation results show that changing in radiation has more significant effect on the output voltage of a solar power system compared to changing in temperature.

A microstrip patch antenna for RFID reader is presented in this paper. It operates within the RFID international UHF band (902-928MHz) which the center frequency is at 915MHz with 15dB of return loss value. The frequency ranges also cover the RFID UHF band for Malaysia (912-923MHz). The main objective for this antenna is to implement it in the RFID reader for an auto payment application. Some results have been shown between CST Microwave Studio, HFSS and the measurement. Good agreement is achieved for the used in the RFID UHF band.

The continuously increasing use of photovoltaic cells requires various efforts to maximize the harnessing of solar energy. This paper presents the research results of fuzzy-logic method implementation to maximize the absorption of solar energy. It is based on the optimization of solar panels position according to the sun direction. The Takagi-Sugeno method is chosen in the fuzzification stage. The control algorithm is implemented on a microcontroller ATMega-128 using BASCOM-AVR program. DC motor is used to actuate the solar panels. The results show an increase of 0.48V in the output of solar cells sensor using the fuzzy logic computation-based tracking system. The resulted tracking system proves to consume less power because the tracking process is halted while moving the DC motor continuously.

This paper presents the capability of Arduino for responding to the robust controller which has been applied to the 3 phase rectifier and 3 phase inverter. The interface between the converters and the Arduino has been established by using MATLAB-Simulink environment. This is the fastest interface due the Arduino library that is available in the MATLAB which can be used before downloading the program to the board. Two types of controllers have been tested which are, P-Resonant and Fuzzy-PI controller. The voltage or current feedback mechanism also has been applied between the converters with the Arduino input port in order for responding to the design controller for signal generating pattern. At the end, it shows that, the Arduino is capable to receive the signals from the converters, process the signals in the board and generating the signal out for controlling the converters.

In this paper, we propose a Smart-Home system with ZigBee Wireless Sensor Networks (WSNs) technology. The system provides automation system in the House. The monitor system uses Andriod NDK and SDK to write application interface for an Android embedded platform. In this system, we provide access control system to obtain sensor data and inquiry into node status. We use multi-channel architecture to reduce a hidden terminal problem and upgrade packet delivery ratio.

In this paper is intended to study and develop embedded systems for use in controlling the operation of the Unmanned Aerial Vehicle (UVA) to work effectively under automatic control system. As well as to design flight control 4 blades, which uses an ATmega328 microcontroller controls the four motors and fly under equilibrium conditions. The embedded system is defined boundary conditions for UAV to suit the operation of the UAV. The Wi-Fi signal is used to transmit data in order to bring the instruction set processor to control the operation of UAV and displayed to the user immediately. Operation of the UAV based on the conditions that were set by the user to suit the scope of work that user need. Nowadays, high technology machines and robots for use in agriculture is very much in some areas. In order to reduce the work of human and still operates efficiently as well. Thus was born the idea to put apply including embedded systems and robotics in order to be used in agriculture to function effectively. Appropriate to the environment and work under human control.

Hardware design and programming of an embedded control system for CPT (Contactless Power Transfer) is proposed in this paper. Embedded control system for CPT is realized based on ARM9 chip, Linux operating system and MiniGUI graphic technology.

With the wide application of electric vehicles, the battery fast charging has become a subject of research. In this paper, how to quickly charge the battery and prolong the life of the battery are described. By analyzing all kinds of storage battery charging method, I have summarized a fast charging technology based on fuzzy control, this method can quickly charge the batteries, and can prolong the life of the battery.

Solar photovoltaic power generation as an inexhaustible, inexhaustible clean energy has become the focus of future energy development. Along with photovoltaic power generation incorporated into the power grid, in order to make power generation plan reasonably, ensure the stable operation of power system, need to forecast the photovoltaic power output. In this paper solar photovoltaic power generation forecasting methods are analyzed and summarized. According to the application of solar photovoltaic power generation and demand, mainly on photovoltaic power generation system power prediction research method has carried on the comprehensive elaboration, hoping for the researches play an important role in promoting and advancing the development of solar photovoltaic prediction methods.

This paper presents an indoor location system. The system is comprised of a RFID reader and several low-power active RFID tags.This designed active RFID tag consists of an ultra low power micro-controller, a low power RF transceiver, micro-strip antenna and an on-board battery. The indoor location system uses a RSSI-based ranging technology location algorithm. The experimental results show that the system is a good location system of high precision. And thanks to the advantage of these low-power active RFID tags, this system can be implemented simply for different applications.

G3-PLC, an orthogonal frequency division multiplexing (OFDM) power line communication solution, has recently gained a lot of attention. It supports the application of four types of baseband mapping modes in different environments. These modes typically require a hard-decision demodulation, which will lead to nearly 3dB preference loss. In this paper, we propose an improvement scheme for the baseband mapping modes by changing the constellation encoding method. The optimal soft decision algorithm which makes use of log likelihood ratio (LLR) of the probabilities is used in the demodulators. Simulation results show that the proposed scheme can outperformer previous algorithm.