Advanced Materials Research Vol. 952

Abstract: Microbending optical fiber pressure sensor is designed with the sensing unit based on multimode fiber in this paper. It consists of the pressure gasket, the microbending regulator and the metal clamp with fine adjustment structure. The measuring range of the sensor could be adjusted by choosing different gasket. When pressure acts on the fixture, a little displacement may occur, and luminous flux of the fiber will be lost after going through microbending part. According to the principle of light field detection, the pressure measurement can be achieved by detecting the loss of light intensity caused by different load. The basic structure of the sensor and its sensing mechanism are well introduced in this paper. In addition, for improving the effectiveness of the Microbending optical fiber pressure sensors, we set up mechanical zero adjustment and the maximal displacement limitation in order to avoid sensor breakdown caused by excess displacement.

Abstract: To improve reducer products quality, continuously innovate and make them more personalized and customized, based on CATIA, researches are on extracting models feature parameter, setting up model base interface parameter, obtaining parametric design source code and writing program code for the cylindrical gear of SEW-F speed reducer. Process outside accessible way has been used for the second development of CATIA. User interface and model base connection can be made. And gear model base has been built. Through inputting gear design parameter in the model base user interface, the part model can be transferred automatically so as to develop the products soon.

Abstract: Using 3D human motion analysis system and biomechanics knowledge, to explore the Taichi Yunshou technique. Twenty one healthy male adults were voluntarily involved in this study, they were divided into two group by training experience: professional group and amateur group. This study reached the conclusions that (a) there are significant difference between professional and amateur Taichi lovers in different phases in flex and extension angle changes of knee joint, (b) there are no statistical difference between professional and amateur Taichi lovers in different phases in varus and vulgus changes of knee joint in right heel strike,left forefoot off, and left heel strike, (c) during right forefoot off phase, there are significant difference between professional and amateur Taichi lovers.

Abstract: Decades of engineering practice have undoubtedly proven that the human operator is a complex variable that warrants significant consideration during the first stages of design and throughout the entire operational lifetime of a system. However, human factors are frequently neglected during the design process and during the systems operation. When human factors are not adequately addressed, people make errors and safety is severely compromised, the consequences of which are well documented. However, the process of integrating human factors into the design process is still maturing. Fortunately, there are ways for the designer to effectively screen and select which human factors elements should receive consideration for a particular project. Human stressors one of Elements should be included, specially factors that cause fatigue and human error.Noise and vibration are important reasons which cause human fatigue and has a significant impact on human performance. The international regulations, ship owners and many countries give a serious concern to this issue specially when designing a new ship to gain the "Green policy" or "Green ship" label by reducing and enhancement ship environmental impact, they adopted technological methods and solutions to achieve that goal. In this paper we will present a review for those methodologies and design procedures for new vessels to enhance this issue as a green policy, which reflect many benefits on human stressors, in order to activate and enrich the role of human factors in ship design.

Abstract: In order to monitor the classroom electrical power usage and achieve low-carbon energy. A kind of monitor equipment was designed by using STM32F103RBT6 as main controller and BWP09 power carrier communication module as the carrier communication media. Using this device, all of electrical appliances in classrooms such as fan, light and air conditioning were under remote centralized control. The control system can turn on or turn off devices and monitor working state of each electric appliance. When electric appliance break down, the system will alarm and send data back to the control room. Waste of electric of energy and burden of classroom administrators were reduced by using this device. Experimental results suggested that the classroom electrical appliance monitor work was stable and reliable, having practical popularized value.

Abstract: Pulley strain aggravated whole-Part abrasion, affected friction and lubricates state of metal belt continuously variable transmission. Pulley strain was analyzed by analytical method and finite element analysis. The results indicate that with the increase of transmission ratio, the driver pulley compressive strain is increases after reduces for a while, and the driven pulley increase. Compressive strain dense when radius is lesser and vice versa. Two methods results are basically the same, whereby demonstrating that the model is rational and that the analysis results are reliable.

Abstract: Ship intermediate-level support system is complex system. The modeling and simulation of the system are difficult. To solve this problem, we apply both UML and HLA for modeling and simulation of ship intermediate-level support system. First, UML is used to model the use case model and interaction model. On the basis of the models above, HLA is used to model object models. Finally, according to the simulation models above, simulation software is developed and simulation case is analyzed, which shows the simulation models can be used to evaluate and optimize ship intermediate-level support system by simulation.

Abstract: The thesis provides detail research on eye movement device theory and realization with infrared camera. It discusses pupil coordinate system and field of view coordinate system, calibration and displaying of real-time eye movement measure for eye tracking device, calibration algorithm for actual focus point calculation by pupil center position, and analysis of Eye movement device.

Abstract: The purpose of present study is to build a multiple linear regression model using biomechanical theory to assess the relationship of pulse wave velocity (PWV) with blood pressure, height and age. By testing the PWV, blood pressure, height, weight of 164 female adults aged above 45 and existing data, the author constructed a multiple linear regression equation. Through comparing the practical test PWV values with the estimate values from regression model, the result showed that there was no significant difference between the model assessment and practical test values (t=0.833, p=.423>.05). Therefore, the regression model is fit for assessing PWV value by height, age, systolic and diastolic pressure.

Abstract: The system uses the PLC controlling step motor to propel the welding oscillator. It adopts the PLC to output pulses, which frequency is precise, so it is convenient to control the direction, and the mechanic part of the oscillator is simplified. At the same time, because of the step motor’s precise step and it is dependable driving, the welding oscillator controlled by this system is convenient to control, not only the oscillation velocity but also the standstill time at each point. The system’s stability can meet the practical need of the welding perfectly.