Applied Mechanics and Materials Vols. 130-134

Abstract: The intelligent Aim system of the Tear Bomb Emitter based on binocular stereo vision has been designed for the armored car equipped in our Armed Police Force. In this paper, according to the intrinsical feature of the background, the binocular stereo vision is chose to detect the forward distance between the bomb emitter and the crowd which the emitter needs to aim at. A new way which is based on integrating temporal information with spatial information has been presented. Then the forward distance was obtained according to the camera calibration, image processing, and error model. The error and measuring experiment shows that the percentage error is less than 2% and this method is feasible and effective.

Abstract: The majority of traffic accidents on the highway is rear-end collision. According to statistics about ninety percent rear-end collision can be avoided if there is 1 second pretreatment time for drivers. So it is necessary to develop automotive rear-end collision warning system to prevent the occurrence of accidents. The anti-rear-end collision warning system based on Zigbee technology is designded in this paper. Vehicle speed, acceleration and other traffic information among the nodes can be exchanged on real-time by using self-organizing wireless sensor networks consisted by Zigbee network nodes. A vehicle safe distance model is established after considered the effects of other traffic safety factors, and then, the actual distance measured by radar is compared with the safe distance so as to provide early warning, alarm and other driving information to drivers. The experiment results show that the system can effectively provide early warning, avoid rear-end collision, and improve active safety of vehicles.

Abstract: The potential of phosphorus removal rate was investigated using a lab scale UASB reactor The volumetric phosphorus removal rate was up to 20 mgP/L•d, and the phosphorus effluent concentration was below 0.5 mgP/L under high organic loading rate. Biological phosphorus assimilation could be the main pathways of phosphorus removal in UASB reactor, and the organic loading rate could be the main factor affecting phosphorus removal.

Abstract: With the requirements of larger production process and continuous reheating annealing furnace production, quality and the optimization of the energy consumption constantly increasing demand, industrial annealing furnace burning process precise temperature control is particularly important [1]. The working state of the heating annealing furnace will directly affect the process operation and sequence. Combining with the actual requirements of the project an axle, we use the smart and PC temperature control to achieve economic efficient and stable production purpose.

Abstract: The system is a new on-line monitor system. Which is consisted of a master station , which is a computer with intelligent CAN-bus interface unit, and a slave station, which is a monitor module for battery parameter measure. The paper introduced the hardware at first, which composed of the CPU circuit, the canbus interface, and then, focus on the software design , including the automatic monitoring of CAN bus transmission,the A/D sampling.

Abstract: The parameters of main ventilator in mine such as air flow, wind speed, gas concentration and other conditions are closely related, for its complexity, it’s difficult to establish the nonlinear mathematic model, and it’s hard describe the model properties by traditional identification method. Neural network and Fuzzy system are used in mine main ventilator model identification. A Neural network based on RBF is used in neural network, and a T-S fuzzy model based on triangle membership function is used in Fuzzy identification. The simulation results show that the two methods can satisfy the needs of identification precision, convergence rate, stability and tracking ability simultaneous.

Abstract: The carriage positioning of excavator in three-dimensions (3-D) is the precondition of the robotic excavator starting roboticized works. In order to get the carriage position of excavator in three-dimensional space, angle sensors of such joints as bucket, arm, boom, and boom deflection are brought to bear. At the same time, a 2D-inclination sensor is introduced to check the list and pitch angles of the platform, and a rotatory angle sensor is introduced to check swing angle of the platform. And a laser receiver was mounted on the arm to measure the relative height of the arm to the laser beam from ground sender. Then the kinematic model is established, the coordinate transformation matrix of carriage positioning is formulated, and the height of the body relative to the ground is gotten. As a result, the coordinate transformation matrix of the bucket relative to the ground and the digging depth are formulated. That makes the excavator orient bucket precisely and set excavation depth exactly, and make automotive elaborate excavation come true.

Abstract: The self-drilling prestressed anchor is a type of ground anchor used to transmit the applied tensile load into soil or rock through cement grout. The paper outlines a general construction procedure using a special self-drilling bit. Based on the load-transfer mechanism, the construction procedure is presented for load-dispersed ground anchors. In-situ pullout tests were carried out for three self-drilling prestressed anchors of the load-dispersed compression type. The test results showed that the ultimate pullout capacity could reach 800 – 1,000 kN. After prestressing, the displacement of the anchor head was decreased by 50 % – 70 % for a low load level and 30 % – 40 % for a high load level, and the displacement induced by elastic deformation was much smaller than that induced by plastic deformation. These results demonstrate that this anchor type is suitable and economical for practical engineering needs.

Abstract: In order to assemble mobile-phone more automatically,with higher speed,and with better efficiency, an application of machine vision in mobile-phone lens assembling guiding system is introduced in this paper. By introducing machine vision,experiment equipment is designed to learn the performance of this technology and the feasibility of this application.Experiment was conducted and the experiment results show that machine vision is a new-born technology which is characterized by automation, high accuracy, flexibility and expansibility on functions.Finally,machine vision can effectively solve some problems in traditional industrial automatic equipment,and the future application prospects of this technology are prosperous.

Abstract: Adoption of machine vision inspection and computer image processing technology, an oil-seal dimension measuring system was developed to meet the requirement of online production and real time inspection. The makeup and principle of the system were introduced, as well as its working process and design requirements were described on detailed. The technique of quadratic filtering for image preprocessing combined with the principle of three points determining a circle, point Hough transform and the least squares was employed for image processing algorithm, and high precision sub-pixel edge detection was achieved. The measuring results of experiments demonstrated that the inspection goal on 100 percents of products could be realized successfully, and with many advantages such as non-contact, on-line, real time, appropriate precision and low cost, the system can be applied widely in other production fields.