Advanced Materials Research Vols. 605-607

Abstract: This paper describes based on the STM32 the dynamic control systems of the ELID grinding oxide film growth process. The system’s structure mainly includes the STM32 controller, DC pulse power source, VMOS circuit and optically coupled isolation circuit. The STM32 controller receives the oxide film thickness value from the host computer. According to the oxide film thickness values, the STM32 controller calls the process library automatically. Based on the process library parameters, the timer outputs the PWM square wave which the frequency and duty cycle can be adjusted, and the serial port output message controled DC power output. The PWM square wave is used to control the on-off of the VMOS circuit, which can be used as the DC converter of the programmable DC power supply, and generates high frequency pulse voltage to control the growth rate of the electrolyte. Finally, the experimental results show that DC pulse power supply output values and the expected output value are consistent.

Abstract: The measurement platform is the core front-end subsystem in mine's dynamic weighing bridge, which directly determines the measuring accuracy and reliability of the system. This paper presents a full digital embedded measurement platform. The establishment of the overall system structure and design of some important modules are described in detail. The platform has a "multistation structure" mode. The direction judgment is achieved by the staggered installation of weight sensors. The transmission performance is ensured with the application of RS485 serial interface. Compared to the traditional technology, this design is more simple in structure and flexible in network, which leads to a great reduction in the cost of equipment investment under the premise of performance assurance.

Abstract: Introduced the MCU STM8S105C4’s basic framework,main function modules and corresponding technical parameters.Based on this MCU, With the crankshaft signal and camshaft signal, the throttle valve position signal, intake manifold pressure signal, and other signals for the treatment plan,the injection control and ignition control,we developed a corresponding control program flow charts and software implementation,to make sure the control of the four-cylinder gasoline engine’s operation correct. Simulation results show that,the design of the control system reach the expected goals,that makes the gasoline engine start and running steadily.

Abstract: IP, Intellectual Property, modules are essential and important for SoC applications. SoC, System on a Chip, is a system integrated on a single semiconductor chip. It is a research hot-point in embedded systems. In this paper, the IP design for a customized mobile SoC is discussed. The customized mobile SoC integrates a mobile computing control or monitor system into one chip FPGA, Field Programmable Gate Arrays. The SoC is required smaller in size and more efficient in operation.

Abstract: Modern automation is the foundation of advanced manufacture. And, the modern automation may depend on embedded systems. In this paper, embedded systems, modern automation, advanced manufacture and system development are discussed. As the hot point of IT research and development, embedded systems are important for modern industry progress.

Abstract: CPUs in embedded systems sometimes have limited performance for the sake of cost, so there may be impossible for these systems to drive a LCD display with a high frame rate. An FPGA based schema is proposed to increase the frame rate of the LCD display so that the texts etc. can be seen fluently. The frame rate enhancer is composed of three parts, an FPGA for receiving the data to be displayed, an SDRAM for data storage and an LCD controller for display control. The designed frame rate enhancer can be used in an embedded system, which has a large LCD display but a low performance CPU, without any flicker.

Abstract: A design of embedded remote video monitoring was proposed, which took advantage of MPEG-4 compression standard to achieve low bit rate interactive multimedia communications. Characteristics of the system is that users can cut system’s hardware and software as needed, such as removing the function has nothing to do with monitoring, can resolve hardware conflict and optimize system at any time.

Abstract: Neural networks have been widely accepted as a good method for signal separation, signal detection and so on. Focused neural network is one of these, which do not need known knowledge of its parameters, and the signal separation effect is more satisfactory. Focused neural network can be used to separate the signal from the signal and noise mixture, the computer simulation experiment shows that the effect of the filter is fairly good.

Abstract: Romp algorithm can reconstruct the signal fast and accurate as long as the signal satisfy Restricted Isometry Property. However, the number of iterations will affect the quality of the image reconstruction directly while the sparsity of the signal is unknown. A new solution will be put forward in this paper which can get the reasonable iteration times of the ROMP algorithm base on some knowledge of each iteration process, Experiments show that this solution can get good quality reconstruction for the image of different features.

Abstract: In target detection, “hole” phenomenon is present in the detection result, and the shadow is difficult to remove. To solve these problems, we propose a target detection algorithm based on principle of connectivity and texture gradient. Firstly, we use the connectivity principle to find the largest target prospects connection area to get a complete target contour, secondly we use target texture gradient information to further remove the shadow of the target. At last, the experimental results show that the algorithm can obtain a clear target profile and improve the accuracy of the moving target segmentation.