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The embedded system develops, it becomes more and more complex system. Thus, it is more difficult for designers and developers to diagnose and debug the embedded system. As one of the most advanced technologies, SOPC is a hardware and software integrated embedded system. In the paper, the fault diagnosis and debugging system based on Rough Sets Theory is presented to help to identify error causes...
Using chalk is not only laborious, but it also produces a lot of chalk dust, polluting the air and adversely affecting the health of the students and teachers. This design uses ARM9 board for hand-held terminal hardware and uC/OS-II embedded real time operating system for hand-held terminal software. When teacher writes on a book-size touch screen with an electrical pen, handwriting signal will be...
With the rapid development of embedded industry, the performance of operating system in embedded equipment has been more and more attended. And according to embedded system characteristics, this paper uses a form of improvement and expansion to design a kernel operating system suitable for multi-core embedded platform, so that to promote the in-depth application of the multi-core processor in embedded...
Through the in-depth research on Linux systems and embedded system graphical user interface (GUI), this paper designs an embedded GUI based on Linux and implements it. The test analysis shows that the research results and the described design ideas and methods are reasonable, feasible, have certain reference value for similar software development.
Scratchpad memory (SPM) is commonly used in embedded system because it is more efficient than cache in both performance and energy, and it can satisfy real time requirements as well. A compiler driven method is proposed in this paper to optimally mapping code segments to SPM at runtime. The algorithm uses compiler to identify hotspots in programs based on a greedy cost model, and utilizes DMA transfer...
Multithreading is a promising technique that widely used in general purpose processors to hide long latency events such as cache misses. This paper proposes an embedded processor design with multithreading support based on the OR1200 processor. The multithreaded OR1200 processor supports interleaved execution of four threads in a round-robin way. The hardware design is evaluated through RTL-simulation...
A Bluetooth embedded service model is introduced towards the floating population. The system is composed of smart phones, Bluetooth wireless server and background equipments. The system functions and workflow are elaborated focusing on the analysis of the core system equipments - Bluetooth server. The hardware design based on the 32bits ARM microprocessor XScale and the CSR BlueCore4 module is discussed...
The demand for high-performance embedded signal processing systems has expanded rapidly in recent years. As applications requiring faster computation capability, higher throughput bandwidth and more flexible interconnection, traditional embedded signal processing systems could not meet the demand of ever-increasing performance. The paper designs a high-performance heterogeneous embedded signal processing...
Embedded systems have become more and more important in our lives. However almost the security protections dedicates in the PC system defense, and there is little effort in the research of the embedded systems security. Embedded systems are in danger. What is more, there are varied kinds of embedded systems platforms, which exacerbate the protection in the embedded systems. This paper is going to...
The mobile database may encounter a series of safety problems from the mobile client, the wireless network, the loophole of itself, the attacks from hacker, viruses and so on, in the actual application process, while the data security of backend database is under threat. To ensure the safety of mobile database, the identity authentication must be consummated, the access-control mechanism should be...
This paper describes a real-time soil water content monitoring system from both perspectives of hardware and software. The system consists of an ATmega128 microcontroller with embedded μC/OS-II operating system, BD-I-type soil moisture sensors, RS-485 and RS-232 bus-based data transmission technologies. Compared to traditional microcontroller monitoring systems, the reliability and processing ability...
The coal mine detect and rescue robot is used for detecting the explosion environment of coal mine and rescuing miners who are trapped in the underground coal mine after gas explosion. Coal mine is a dangerous place in which many fatal factors menace miners' life, especially when blasts occurred. Rescue crews usually don't know the actual situation of the mine tunnel under such circumstances. Therefore...
The main objective of this proposal is to automate control and communication systems of the train using High Performance Multi-core Embedded Processors (MCEP). This method will overcome the difficulties faced by the existing methods such as detecting cracks at rails, monitoring distance between rails, compartments monitoring, fire and smoke monitoring in compartments, and controlling of motors, transformers,...
Here introduces a monitor system technically based on ARM7 embedded micro processor (HMS30C7202) and Micro C/OS-II embedded operating system. The paper provides the scheme of the principal, introduces the connection method of outside signals, tells about how to transplant the Micro C/OS-II to the operating system, and shows the programming emphases and some source code of the majority of the program.
LLF(Least Laxity First) is one of classic dynamic real-time task scheduling algorithms. Considering the unsteadiness and unpredictability of a practical task running environment due to the unsteadiness of network communication and the time estimation deviation, it is necessary to introduce fuzzy concept and theory to the scheduling field of embedded soft real-time application systems.. In this paper,...
The degree of achievable test-data compression depends on not only the compression scheme but also the distribution of the applied test data. Therefore, it is possible to improve the compression ratio of a given test set by regenerating test set and using suitable compression scheme without harm the fault coverage. This paper proposes a novel encoding scheme, named hybrid prefix code. In the proposed...
Reed Solomon coding plays an important role in sustaining the integrity of the data transmitted across communication channel. The Reed Solomon encoder can be embedded into many devices to protect the data to become corrupted. However, the encoder does consume a significant amount of power. By integrating the encoder circuit, there would be an increase of hardware component to be embedded in the device...
Different data hiding methods would be required in different operating environments. To improve the quality of videos embedded by data, this paper will apply the differences of matching blocks in the H.264 encoder during the inter prediction stage and enforce the size of the matching blocks to implement data hiding. Bit rate increases after being embedded by data, to resolve the problem, this paper...
Based on the analysis of the basic principles and performance requirements of embedded monitoring system, combining with embedded technology, image compression technology and network technology, this paper designs and implements an ARM-based embedded network video monitoring system to achieve video image acquisition, compression and transmission. This system is a small, low cost, digital monitoring...
This paper focus on the methods of the build process of Real-Time Workshop (RTW), the influencing factors on code efficiency and development of a custom embedded target. In order to generate embedded C code and download it to a user-specified micro-controller (Freescale™ MC9S08DZ60 for example in this paper) conveniently, an embedded target is developed. The embedded target developing consists of...
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