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The design of automatic straightening machine system for high precision elevator guide rails is introduced in this paper. Detecting the linearity of elevator guide rails with laser sensor, the hardware construction and working process for straightening elevator guide rails are mainly described. This system is based on the IPC (Industrial Personal Computer) and the multi-axis motion control interface...
Connectivity is a crucial quality of service measure in wireless sensor networks. However, the network is always at risk of being split into several disconnected components owing to sensor failures caused by various factors. To handle the connectivity problem, this paper introduces an in-advance mechanism to prevent network partitioning in the initial deployment phase. The approach is implemented...
In this paper, an experimental study was conducted on domestic air-conditioner refrigeration system to increase the system energy efficiency ratio (EER). First, different types of high efficiency compressors were tested and selected. Second, inner-grooved copper tubes which had fins with hydrophilic membrane, together with the indoor and outdoor helical fans were employed to improve the heat convection...
In this paper a series experiments and theory studies were conducted on electronic expansion valves, the relationship of refrigerant current capacity and variable condition under the condition of invariable other parameters was explored. Refrigerant mass flow rate is unceasingly increasing with Subcooled degree increases, and reducing with the evaporating temperature rises ceaselessly, increasing...
A new error concealment method based on optical flow is proposed, as a post-processing tool at the decoder side to recover the lost information during the video transmission. The conventional error concealment methods often result in blocking effects because of inaccurate motion vectors estimation. We use the attractive property of optical flow technique on motion estimation to recover the lost block...
A novel approach to construct accurate and interpretable high-dimensional fuzzy classification system is proposed in this paper. First, in order to relieve the problem of dimension disaster, a feature selection is accomplished by the Simba algorithm. Then a fuzzy clustering algorithm is using to identify an initial fuzzy system. Finally the structure and parameters of the fuzzy system are optimized...
A new error concealment algorithm is proposed as a post-processing tool at the decoder side for recovering the lost blocks and their motion vectors as well incurred during the video transmission. Sobel operator is used to detect the edge of the blocks around the lost block and find the more precise estimation of the motion vectors by all edge blocks. Simulation results show that the proposed method...
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