Design and Implementation of a Phase-Coded Quasi-CW Radar Signal Processor

2010 ◽  
Vol 20-23 ◽  
pp. 785-790 ◽  
Author(s):  
Chao Wang ◽  
Feng Su ◽  
Yun Peng Han
Keyword(s):  
Random Phase ◽  
Radar Signal ◽  
Operation System ◽  
Time Operation ◽  
Radar Echo ◽  
Real Time Operation ◽  
Processing Platform ◽  
Cw Radar ◽  
Parallel Signal Processing ◽  
Signal Processor

A pseudo-random phase-coded quasi-CW radar signal processor is designed，and implemented based on a parallel signal processing platform. Distance sidelobe and “echo eclipse” are two problems inherent to the phase-coded quasi-CW radar. In this paper, “Code agility” method is used to suppress the distance sidelobe, which has good performance even when the radar echo is badly eclipsed. Software of the radar signal processor is characterized by pipelined processing, and the DSP program is based on real-time operation system. Results of the field experiment verify the correctness of our design.

CAN-Based Parallel Guidance System for Agricultural Machinery

2012 ◽  
Vol 203 ◽  
pp. 349-354
Author(s):  
Zhi Jun Meng ◽  
Hui Liu ◽  
Wei Qiang Fu
Keyword(s):  
Can Bus ◽  
Object Oriented ◽  
Guidance System ◽  
Agricultural Machinery ◽  
Single Chip ◽  
Operation System ◽  
Development Tool ◽  
Time Operation ◽  
Embedded Gis ◽  
Real Time Operation

The objective of this study was to develop a CAN-based parallel guidance system for small agricultural machinery. The system consisted of field computer, light bar and DGPS receiver. The field computer was developed using PC/104 CPU module, running on the embedded real-time operation system customized by a special development tool. Single chip and CAN controller were selected for guidance light bar design, which used a row of indicator LEDs to guide drivers. Field computer and guidance light bar communicated with each other based on CAN bus. The guidance software running on the field computer was designed in object-oriented manner by integrating embedded GIS development kit. In field test, the average of offline distance was 0.452 meter. The lowest percentage overlap and skip were 3.64% and 3.82% respectively. Results showed that this kind of guidance system was suitable for small-size machinery and could provide effective guidance aid for field operation.

Research of a Rotating Machine Reconfigurable Monitoring System

2010 ◽  
Vol 29-32 ◽  
pp. 868-873 ◽  
Author(s):  
Jian Wan ◽  
Tai Yong Wang ◽  
Yi Yuan
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Task Assignment ◽  
Operation System ◽  
Rotating Machine ◽  
Machine Monitoring ◽  
Time Operation ◽  
Real Time Operation ◽  
Filter Type ◽  
And Control

To get over the problem that only one type of filter cannot meet the requests of field monitoring, a rotating machine monitoring system that can reconstruct filter type was developed based on ARM, DSP and FPAA. The dual-CPU consisted of ARM and DSP was used as the computing and control core of the system; FPAA was used to achieve that the filter type can be reconfigured; RT-Linux was imported as embedded real-time operation system, which achieved hiberarchy design of software and enhanced the operational stability and real-time performance of task assignment. Put into practice, it was confirmed that the system was effective.

Monitor & Diagnosis Support System for Nuclear Power Plants

2011 ◽  
Vol 121-126 ◽  
pp. 4033-4037
Author(s):  
Shou Yu Cheng ◽  
Xin Kai Liu ◽  
Min Jun Peng
Keyword(s):  
Support System ◽  
Nuclear Power ◽  
Power Plants ◽  
Nuclear Power Plants ◽  
Main Function ◽  
Unit Operation ◽  
Operation System ◽  
Time Operation ◽  
Real Time Operation ◽  
Machine Interface

An Monitor& Diagnosis Support System for Nuclear Power Plants (NPPMDS) is developed in the embedded real-time operation system VxWorks in this paper. NPPMCS includes data collection and validation unit, operation monitoring unit, fault diagnosis unit, alarm analysis unit, operation procedures and Human-machine interface and so on. The paper introduces the design and implementation of NPPMDS including the structure of the NPPMDS and the main function units. In order to confirm the validity of this system, the SGTR simulation experiment was carried out on a full scale simulator of nuclear power plants. The experimental results show that the system provides operation support, the load and pressure for the workers can be reduced and the safety of nuclear power plants can be enhanced.

Research of SVC Control System Based on Real-Time Operation System for Wind Farm

2012 ◽  
Vol 516-517 ◽  
pp. 1921-1925 ◽  
Author(s):  
Jin Liu ◽  
Ze Yu Zhong
Keyword(s):  
Real Time ◽  
Wind Farm ◽  
Reactive Power ◽  
Wind Farms ◽  
Communication Management ◽  
Operation System ◽  
Time Operation ◽  
Static Var Compensators ◽  
Real Time Operation ◽  
Reactive Power Compensator

Wind power generation was developed rapidly in China. And many wind farms are configured Dynamic Static Var Compensators (SVCs) as reactive power compensator, which can meet the dynamic demands of the reactive power compensation for the wind farm. The paper put forward a coordination control strategy of reactive power for wind farm based on embedded real-time operation system in DSP, and by using LabVIEW to realize PC management and network communication management, and provides the research foundation for coordination and the optimal control of reactive power in large wind farm.

A Mapping Simulation of Code Generation for Partitioned System

2013 ◽  
Vol 325-326 ◽  
pp. 1759-1765
Author(s):  
Ya Qin Chen ◽  
Dian Fu Ma ◽  
Ying Wang ◽  
Xian Qi Zhao
Keyword(s):  
Embedded System ◽  
Real Time ◽  
Code Generation ◽  
Operation System ◽  
Analysis And Design ◽  
Model Driven ◽  
Time Operation ◽  
Real Time Operation ◽  
Hand Writing ◽  
Architecture Analysis

It is crucial for real-time embedded system to design and verify for a little fault may lead to a catastrophe. Architecture Analysis and Design Language (AADL) is a modeling language used to design and analysis the architecture of real-time embedded system based on Model Driven Architecture (MDA). Code generation of AADL model to codes running on the Real-time Operation System can avoid hand-writing mistakes and improve the efficiency of development. Partitioning is introduced into embedded system to control fault transmission. This paper presents a mapping approach to generate codes from AADL model for partitioned system, and the generated codes which include configuration codes and C codes will run on a partitioned platform.

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