Advanced Materials Research Vols. 490-495

Abstract: In order to improve the quality of microwave drying, we propose the microwave drying temperature control system which consists of microcontroller (AT89S52), temperature sensors (DS18b20) and other electronic components. The system can monitor the real-time temperature of the drying chamber and can control the drying process automatically , let the temperature cannot out of the permitted range(control the extent permitted automatically), these processes ensure the quality of the dried crop. The results shows that crops using the system are better than those that not used（using）. These tests proved (prove) that the microwave temperature control system can achieve its designed function.

Abstract: A trinocular stereo-matching algorithm based on adaptive support-weight and disparity adjustment has been proposed to improve the accuracy of trinocular vision. Adaptive support-weight which is an efficient window selection method in binocular stereo is applied in the trinocular stereo. A robust target image selection method is also proposed for using the information of different target images in trinocular stereo-vision system efficiently. So occlusion can be handled well by this means. The vision system is tested in the project Family Life Support Multi-Robot Systems.

Abstract: Aimed at the variable speed and real-time problems in stage boom machinery control, the practical problems of great error, bad real-time, difficult zero speed park in fixed speed control has been solved effectively by adaptive fuzzy PID control. Based on the characteristics of the stage boom operation, a combined configuration of lower acquisition module and upper controller are applied to the control system, the upper controller sends the running parameters to the lower controller through the industrial Ethernet. The lower controller calculates output by adaptive fuzzy PID and communicate with inverter through CAN bus, then variable speed control in stage boom control can ben achieved by variable frequency. Unique degree value encoder is used to feedback the real-time information to the lower controller. System testing results showed that the method could improve the control performance and realize the variable speed control and zero speed park of the stage boom machinery

Abstract: All the strains screened out from contaminated soils were capable of degrading diesel oil while consortium and strains Q18 had stronger degradation efficiency. It’s found that the existence of alfalfa and mustard could promote the degradation of diesel oil significantly. The existence of plant and the growth of roots may have changed the soil environment to make it more suitable for the growth of strains and degradation. In addition, the number of strains in the mustard rhizosphere was larger than that in the alfalfa rhizosphere, which showed that mustard had stronger ability on the activation of strain. This may be related to the different growth characteristics of mustard and alfalfa. In the experiment, Rhodococcus Q18-Indian mustard complex had the highest rate of degradation of diesel oil.

Abstract: the wide application of engineering machinery in the engineering construction gives important significance on the development of the test and diagnostic techniques of engineering machinery. This article introduces the development and status of the test and diagnostic techniques of engineering machinery and analyses its development trend.

Abstract: Underwater corona discharge is a swift, efficient and low-cost method for water treatment. To achieve above advantages, underwater corona discharge systems usually work in the repetitive mode. In this paper, a simple charge-discharge circuit for the typical driven capacitor (10nF/100KV) is proposed, which makes the system be capable to work at a repetition rate of 50Hz. The working mechanism of this circuit is introduced, and its electric behavior is simulated by pSpice. Based on the simulation results, the rules of choosing the electric parameters for this circuit are discussed.

Abstract: This paper proposed a new design scheme for automatic clutch of AMT which is based on electrorheological (ER) fluid. Through analyzing the working principle and its transfer characteristics of ER fluid, it discussed the start process of vehicle and control strategy of ER Clutch. By changing the control voltage, ER clutch satisfied the requirements of evaluation indexes such as start time and impact degree. The simulation results showed that the control strategy can realize starting rapidly and steadily which would meet the start requirements of economical automobiles

Abstract: To resolve bottle-net problem of knowledge acquisition of fault diagnoses expert system. This paper make use of circuit simulation software Multisim2001module modeling and simulating, acquiring fault data of electric control circuit of missile launching vehicle, acquiring correspondence relation of function-fault, establishing knowledge base of intelligent diagnostic expert system, affording a new thought to resolve knowledge acquisition of expert system. The fault diagnosis expert system is based on the knowledge base, but many fault diagnosis expert systems face the same problem: the knowledge of fault and fault maintenance is very poor. This causes many of intelligent fault diagnosis systems are still in the theoretical research or prototype design stage, and its use value is low, therefore, how to gain more significant and enough knowledge has turned to be the bottleneck which confine the engineering operational capability of fault diagnosis system[1] . This article will build an electrical system dynamic operational model of some equipment by circuit simulation. And it will do the direct current analysis, transient analysis etc. for the circuit by the software’s powerful analyze ability, include the setting of some devices’ voltage value, current value and test point, and gain the simulation parameters of normal conditions and fault conditions. Then lead these data into the database so as to the system to call and search, and confirm the fault node finally [2, 3]. The function simulation which is mentioned in this article is an ingredient of the equipment system simulation; structure simulation and movement simulation are also like it. And it contains system-level simulation, part-level simulation and component-level simulation in the hierarchical division. Because of the limited space, this article just considerate the electricity circuit simulation’s application in the fault knowledge acquisition, which is belong to the function simulation.

Abstract: In this paper, a web-based remote ENT diagnosis system is proposed. This service model encourages busy modem office workers to frequently understand their health conditions using a convenient manner. The software and hardware components are developed for patients and physicians. At the patient site, the EDH is implemented to acquire patients' symptoms and signs, and these symptoms and signs are recorded as video and audio files using a SDRS program. The SDRS program further transmits hese files and data to the VHS. Physicians may review the EPR through conventional web browser. Finally, tentative diagnostic reports are made for patients’ references. Two case studies are tested to verify the quality of remote diagnosis. Experiment results demonstrated that the proposed remote ENT diagnosis systems successful establish similar ENT diagnostic condition compared to face-to-face diagnoses.

Abstract: The minimum microcontroller system is adopted in this paper to produce sine wave, achieve key control, and realize frequency display and measurement, which enable the circuit to automatically change and measure the filter output frequency. In the system 4011 chip and external RC circuit adjust pulse width and the number of bursts, Two-stage second-order active band-pass filter is used to filter out interfering signals so to get the fundamental signals. The 89s52 microcontroller programming regulate the signal frequency and amplitude which is realized through keyboards and shown on LED