Tsair Rong Chen

National Changhua University of Education

A pattern reconfigurable design realized by a planar array integrated with a switchable feed network is presented. The array has 16 radiating elements, and each element is a printed dipole backed with a metallic box. These elements are divided into four groups, and the excitation state of each group can be controlled with the feed network. By varyi...

A 2 × 2 array with reconfigurable pattern and polarization is presented. The element of the array is a circularly polarized (CP) antenna, which is mainly composed of a monopole slot, a dipole, and a cylindrical copper tube. By manually moving the dipole arms, the element can be operated at right‐handed and left‐handed circular polarization states;...

A design of pattern reconfigurable arrays realized with mechanical mechanism is presented. The radiating element of the array is a printed dipole backed with a metallic box, and it has a broad impedance bandwidth as well as a high front‐to‐back ratio. Four of the elements are connected together by using a mounting fixture with rotatable joints. Whe...

A dual‐band, dual‐polarized microstrip array with high isolation is presented. The array element is a compact ring patch antenna, and all of the radiating patches are fabricated on the same substrate. A horizontal coaxial balun is used to excite the compact element so that the isolation between two orthogonal polarizations and the coupling between...

The analysis and implementation of this paper is applied to a real game boxing machine. The contents of this game boxing machine are consists of three parts that are the UNITY, programming and hardware development. Therefore, in order to have RPG role-play boxing game inside of real game boxing machine, this paper firstly analyzes user requirement...

With the gradual rise inthe proportion of the aging population, the world has entered the agingsociety. Thus, the assessments of service to care receivers and home sleepquality have attracted more emphasis and attention of the medical sector. Theactuation principle is to apply a load on the upper sensor film, which touchesan external electronic con...

In this paper, a series-connected battery charging/discharging analyzer is developed to automatically test the batteries with a complete charging and discharging cycle. A micro-controller unit (MCU) is integrated to sample the battery voltage and current and calculate the charging efficiency. The charging and discharging processes are also controll...

In this paper, a single phase dc to ac inverter with a low cost driver circuit was developed. The input source is a battery tank of four series-connected LiFePO4 batteries. The input DC power is then converted into the output AC power with 110Vrms and 60Hz. The proposed inverter is composed of a boost DC converter and a full bridge inverter. As for...

In this paper, an automatic testing platform was developed. A complete charging and discharging cycle for the series-connected lead-acid batteries is carried out by the testing platform to record the capacity, charging efficiency, and other relative data of the batteries. A microcontroller unit (MCU) is used to replace the common DAQ card for cost...

We have developed a simple solvothermal method by using solvent mixtures of ethylenediamine with ethanol and deionized water to produce the CuInSe2 nanoalloys. The phase structure, morphology, elemental composition and optical band gap (Eg) of synthesized the CuInSe2 nanoalloys were characterized by Raman spectroscopy, X-ray diffraction (XRD), scan...

Aside from the changes happening to the life around the world, global warming also threats commercial activities. The transition to a low carbon world will transform our whole economy. Additionally, a low carbon industrial strategy must seize the opportunities that will come with change: a new industrial activism for a new green industrial revoluti...

This paper reports on a strategic analysis of the development of Energy Service Companies. A policy model is used to assess the strategic positioning entailing a two-dimensional analysis, containing ESCO industry’s strategy objective and poilicy objective. By this way, we could find in different segmentation there will have different industrail inn...

By questionnaire survey, this study probes into university studentscurrent cognition and attitude toward energy saving and carbon reduction and conducts path analysis. The research tool is self-designed questionnaire on cognition and attitude toward energy saving and carbon reduction. First, 9 experts and scholars are invited to test content validi...

ABSTRACTA design for dual‐band circularly polarized (CP) antennas is presented. The antenna is composed of two concentric shorted annular slots, and each slot can generate CP radiation at its one wavelength resonant mode or one‐and‐a‐half wavelength resonant mode by varying the position of the shorted section. When the one wavelength mode of the ou...

The role of religion in providing people spiritual stability and the necessity for conducting worships has increased the demands of religious buildings. Taoist religious buildings have a significant presence in Taiwan. With increasing environmental awareness and declining wood production, current constructions of Taoist buildings have shifted from...

The research tool is self-designed “questionnaire on attitude toward energy saving and carbon reduction”. There were 1,665 subjects, with a total of 1,557 valid questionnaires. According to research findings, university students’ overall attitude is positive. Besides, environmental activities and volunteer participation experience have significant...

This study mainly investigates and researches the production of micro-torque limiters by using magnetic force and infrared optointerrupters therein including a permanent magnet, a magnet set, a grating disk, an infrared optointerrupter and a microprocessor, a torque-driven screw rod with the torque generated by the magnetic adsorption force. As the...

In this research, the verification on the torque limiter is completed by using the mechanism of a torque limiter integrated with the infrared optointerrupter feedback detection. Through a shuttle and an infrared optointerrupter, it is meant to determine whether the rotation mechanism is affected by the mechanism of a torque limiter. With this, it i...

In wireless sensor networks, power consumption is the most important issue. That is wireless sensors are normally deployed into unattended places where power of sensors is hard to be charged. Indeed, the network lifetime of wireless sensor networks equipped with city power or deployed into attended place is much longer than those wireless sensors e...

This article presents a design for circularly polarized ring slot antennas backed by a metal plate with a small separated distance.The antenna is excited through a shorted L‐shaped coupling strip, and good circular polarization performance can be obtained as long as the vertical arm of the L‐shaped coupling strip is properly stretched. Both simulat...

“Industrial Wiring” Generally Use in Industrial Circle for High Pressure Switchboard, Low Pressure Switchboard, Motor Starters and Control Panel Etc. Assembly, and Is One of the Main Events of Vocational Training. in Traditional Learning, Teachers Will Explain the Circuit and Do the Demonstration, and then Students Will Proceed Self Study or Practi...

This paper aims to explore the Lead-acid battery charging performance by the analysis of the AC impedance. The experiments show that the optimal charging frequency is within the range from the resonant frequency to the minimum AC impedance frequency. In such a condition, the Lead-acid battery charging time and charging efficiency are improved about...

In this paper, a multi-lamp T5 digital dimming electronic ballast is developed to improve the electronic ballast in the lamp failure which is unable to clearly determine whether the lamp is good or not and the disadvantage of non-filament preheating start. It can effectively extend the lamp life of the fluorescent and has the function to protect th...

The traditional electrical welding machine has several disadvantages. For example, the efficiency of its transformer is not high, its volume weight is too much, and its output current cannot be controlled well. This paper proposes an electrical welding machine controlled by the digital current. It uses the technique of switching power supply and on...

A second Displacement Measurement Meter is used as a compensatory device, it's greatly increases the accuracy which matches a laser inspection report. However, the non-flat surface of motion and fluctuating measurement distance create a certain percentage of error, when the Displacement Measurement Meter is applied, despite of being much more accur...

A novel design for the production of circularly polarized radiation (CP) in proximity-fed microstrip antennas is presented. To achieve this circular-polarization design, the two orthogonal modes of the microstrip antenna are excited in series through the proximity coupling of an L-shaped open microstrip line. The experimental results show that the...

This paper presents the design of a dual-port microstrip patch antenna with dual-frequency operation. Two different feed mechanisms—aperture coupling and inset coplanar microstrip line—are used to excite the TM10 and TM01 modes, respectively, on a single square patch. The frequency ratio of the proposed dual-frequency microstrip antenna can be vari...

A new design of aperture-coupled microstrip antennas for circular polarization (CP) is presented. The CP microstrip antenna is excited by using a series microstrip-line-feed configuration through the coupling of a ring slot in the ground. The effects of different ring-slot sizes on CP performance are investigated. The experimental results show that...