All the 14 meridians course can be searched enough by meridian-like high thermal line inducing technique in human body.

Background: The meridian-like high thermal line (MLHTL) is induced along the target meridians course after acupoints stimulus by mineral pulse light stimulator. The rising temperature is average 1.85±0.52°C. So then, what’s the inducing mechanism of MLHTL? And can search all the 14 meridians course? Objectives: The purpose of this study is to explain the inducing mechanism of MLHTL, and the searching possibility of MLHTL course and all the 14 meridians course in the human body.Methods: Inducing character of meridian-like high thermal lines were researched and analyzed. And the searching possibility of MLHTL course and all the 14 meridians course, was analyzed.Results: Inducing characteristic of MLHTL is that MLHTL is induced when acupoints are stimulated by the mineral pulse light (Hz= 1.25), and in opposite, never induced, when acupoints is stimulated by the mineral non-pulse light (Hz= 0). This result is same as meaning of the pulse light resonance circuit (pulse current circuit) at electronic engineering. And the mini atomic magnetometer (QZFM Gen-2) can search enough pulse magnetic field induced from MLHTL course. Conclusions: The meridian-like high thermal lines are induced by pulse ion current occurred along the classic meridians course, so that all the 14 meridians course can be searched by MLHTL inducing technique enough in human body.

A Corrosion Detection Method for Steel Strands Based on LC Electromagnetic Resonance

At present, prestress detection is a worldwide problem. Corrosion has an important impact on the accuracy of the stress detection results of prestressed tendons. Once the steel strands in service is corroded, stress corrosion will occur, which seriously affects the safe operation of the prestressed structure. Based on the LC electromagnetic resonance circuit to detect the prestressing force of steel strands, this research has been successfully applied to the detection of the corrosion rate of steel strands, which lays the foundation for the nondestructive detection of the healthy state of steel strands in the existing structure. In this study, the steel strands were regarded as an external inductor embedded in the LC resonance circuit. After the steel strands was corroded, its electromagnetic characteristics would change, and this change was manifested by the resonance frequency. In this paper, the regular change of the resonance frequency caused by the change of the inductance of the steel wire after corrosion was explained theoretically, and a theoretical model of the relationship between the electromagnetic resonance frequency and the corrosion rate was established. In this study, it was proved through experiments that the LC electromagnetic resonance method can accurately detect the overall corrosion degree of bare steel stranded wires, and a fitting formula for corrosion detection of steel stranded wires was established. Through the analysis and exploration of the test data and test phenomena, it has been found that the action mechanism of the stranded wire decreases with the increase of the corrosion rate and the inductance thereof, which leads to the increase of the resonance frequency. The discovery of these laws will provide an improved basis for the prestress detection of in-service steel strands by LC resonant circuits and make the method to be further applied to practical engineering.

Direct Power Conversion Battery Charger for Low Electric Vehicles

This paper presents a new battery charger for low power electric vehicles with high power factor and Efficiency. The main objective of the proposed design is to reduce the conduction losses and Reverse Recovery Problem in power diodes. To eliminate both the issues, the diode rectifier is present in primary and secondary side of the transformer an series resonance circuit added. By using the series resonance circuit, Zero Current Switching (ZCS) possible and also alleviates the reverse recovery problem. Thus the proposed new battery charger operates with high power factor and high efficiency. Additionally, by using the present single power conversion, it is easy to install the on-board charger in the EVs. After the theoretical analysis, Simulation Results are obtained on MATLAB/Simulink environment and Hardware results are from the proposed model.

Wireless Power Transfer Experiment by Using Magnetic Coupling Resonance

Wireless power transfer experiment by using magnetic coupling resonance can be used for electric vehicles, portable electronic equipments, etc. It is clear that this technology will bring convenience and productivity. So how can we do the wireless power transfer experiment? This thesis will show the experiment from two aspects： the first is to understand and explore the theory of this experiment； The second is to raise the questions I met and the utility of this technology. By studying the knowledge [1]of the theory， I have the fundamental understanding of alternating current, resonance circuit, and electro-magnetic induction. [2]After the experiment, I also collect analyze the data.