Hsinchu, Taiwan

Chung Hua University

www.chu.edu.tw
Hsinchu, Taiwan

Chung Hua University is a private university located in Xiangshan District, Hsinchu City, Taiwan. It was formerly known as Chung Hua Polytechnic Institute founded in 1990 by three local Hsinchu entrepreneurs, Ron-Chang Wang, Zau-Juang Tsai and Lin Junq-tzer. It was upgraded to university status and renamed as "Chung Hua University" in 1997. There are six colleges with 25 departments offering undergraduate courses as well as 16 master programs and 3 PH.D. programs. Wikipedia.

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Hou C.-C.,Chung Hua University
IEEE Transactions on Power Electronics | Year: 2013

Theuse of parallel three-phase active front-end (AFE) converters has become more popular due to their simplicity, low cost, and expandability. However, the pulse width modulation (PWM) switching of parallel three-phase AFE converters causes circulating current. The circulating current is mainly affected by the zero vectors of eachPWMcycle. This study proposes a multicarrier PWM for parallel three-phase AFE converters. The multicarrier PWM can synthesize the desired output voltage without using zero vectors. Therefore, the circulating current between parallel three-phase AFE converters will be suppressed by the multicarrier PWM scheme. Furthermore, the common mode voltage of a threephase AFE converter is reduced by the multicarrierPWMscheme. Simulation and test results are presented to validate the performances of the proposed multicarrierPWMfor parallel three-phase AFE converters. © 2012 IEEE.


Patent
Chung Hua University | Date: 2014-02-07

A touch panel comprises a plurality of basic sensing-units arranged in a matrix. The basic sensing-unit comprises a pressure-sensing transistor and a selection transistor. The pressure-sensing transistor comprises a first terminal, a second terminal, a gate electrode, a mask layer, a channel connecting the first and second terminals, a dielectric layer formed on the channel, and a piezoelectric material deposited on the dielectric layer. The piezoelectric material may comprise PVDF, lead zirconate titanate, ZnO, BaTiO_(3), LiNbO_(3), or PbTiO_(3). The selection transistor comprises a first terminal, a second terminal, and a third terminal. The first terminal of the selection transistor connects to a sensing electrode of the touch panel, the second terminal of the selection transistor connects to the first terminal of the pressure sensing transistor, and the third terminal of the selection transistor is a transistor gate and connects to a drive electrode of the touch panel.


Patent
Chung Hua University | Date: 2014-03-10

An externally triggered memory type liquid crystal thin film is provided with a wireless communication module including first and second driver units wherein a current is generated in the second driver unit when a distance between the first driver unit and the second driver unit is equal to or less than a predetermined value; and a light adjustment module including a first conduction layer electrically connected to a first terminal of the second driver unit so that the second driver unit supplies the current to the first conduction layer, a second conduction layer electrically connected to a second terminal of the second driver unit, and a liquid crystal layer formed between the first and second conduction layers so that an electric field is generated in the liquid crystal layer by both the first and second conduction layers.


Patent
Chung Hua University | Date: 2014-07-31

A method used for a biomedical system is disclosed. The biomedical system includes an RFID apparatus and a reader apparatus communicating with the RFID apparatus. The RFID apparatus includes an electrode disposed adjacent to an acupuncture point and a motion monitor device including an accelerometer, a gyrocompass, or a pressure sensor. The method includes sending command information to the RFID apparatus from the reader apparatus; obtaining acupuncture impedance or bio-potential data through an electrode; providing nerve stimulation therapy by the RFID apparatus according to the command information, or using, by the RFID apparatus, the accelerometer, the gyrocompass, or the pressure sensor to obtain measurement data according to the command information; and submitting the acupuncture impedance/bio-potential data or the measurement data to the reader apparatus by the RFID apparatus.


A thermal convection-type accelerometer includes a first insulating substrate, a circuit formed on the first insulating substrate, a first acceleration-sensing device coupled with the circuit, and a first supporting layer attached on the insulating substrate. The first acceleration-sensing device includes two temperature-sensing components and a heater disposed between the temperature-sensing components. The temperature-sensing components and the heater are directly formed on the first supporting layer.


Patent
Chung Hua University | Date: 2014-04-15

The invention is related to a microstrip line structure, which comprises: a first microstrip line and a second microstrip line, paralleled with the first microstrip line for transferring a transmission signal, and a plurality of grooves periodically arranged on both sides of the second microstrip line by using subwavelength, and each period length in the plurality of grooves is smaller than the wavelength of the transmission signal.


Patent
Chung Hua University | Date: 2014-07-29

A composite navigation system includes a first RFID apparatus, a GPS receiver, and a signal processing system. The first RFID apparatus includes an RFID chip and an antenna, a plurality of inclinometers, a plurality of linear accelerometers, and a plurality of angular accelerometers. The processing system includes a first RFID reader and a Kalman filter. The first RFID apparatus can communicate with the first RFID reader. The Kalman filter connects to the GPS receiver and the first RFID reader.


Patent
Chung Hua University | Date: 2014-07-31

A person positioning and health care monitoring system includes a monitoring center, a RFID tag device, and a tracking module. The monitoring center includes positioning data corresponding to a target. The RFID tag device is located on the target and includes a memory storing a target identification (ID) number and an infrared LED. Each tracking module includes infrared cameras and an RFID device. The tracking module uses the RFID device to communicate with the RFID tag device so as to receive the target identification (ID) number. The tracking module communicates with the monitoring center so as to provide the target identification (ID) number and orientation data corresponding to the target for the monitoring center. The monitoring center determines coordinates of the target according to coordinates of the tracking module and the orientation data corresponding to the target.


Patent
Chung Hua University | Date: 2015-09-21

A nozzle device includes an upper cover module having a cavity, a plurality of stacked piezoelectric plate modules, a plug module, and a lower cover module. Each piezoelectric plate module includes a substrate, a piezoelectric material, an electrical connection, an upper electrode, and a lower electrode. The substrate includes multiple first through holes disposed correspondingly to the cavity. The piezoelectric material is located on the upper surface of the substrate. The electrical connection extends from the lower surface of the substrate, through the substrate, and to the bottom of the piezoelectric material. The lower electrode is located below the lower surface of the substrate and electrically connects to the electrical connection. The plug module includes plugs and second through holes corresponding to the first through holes. The lower cover module includes openings disposed according to the plugs of the plug module.


Patent
Chung Hua University | Date: 2014-07-31

A foldable and flexible ultrasonic vibration mask for cleaning teeth comprises two upper devices and two lower devices. Each upper device comprises a flexible substrate, coils configured to generate ultrasonic sound and formed on the flexible substrate, coils configured to generate audible sound and formed on the flexible substrate, a resonance chamber attached to the flexible substrate and including a magnetic alloy. Each lower device includes a flexible substrate, coils configured to generate ultrasonic sound and formed on the flexible substrate, and a resonance chamber attached to the flexible substrate and including a magnetic alloy. The flexible substrates of the two upper devices are fixed together. The flexible substrates of each upper device and a corresponding lower device are fixed together. The flexible substrates of the two lower devices are fixed together.

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