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The IEEE 1588 standard could synchronizes independent clocks running on separate nodes of a distributed measurement and control system to a high degree of accuracy and precision. But the standard did not present the method to implement the protocol in detail. An implementation of the IEEE 1588 based on an FPGA is presented in this paper. And the result of the experiment shows this method could achieve...
Integrated Modular Avionics (IMA) architecture provides means for integrating multiple safety-critical applications on a shared hardware in an airborne system. Error free data transfer between different modules of an IMA cabinet is an issue of critical importance. ARINC 659 has proven to be one of the most comprehensive standards for intra-cabinet data transfer within an IMA cabinet of commercial...
This paper presents a low power ultra-wide band digital receiver baseband architecture for handling IEEE 802.15.4a packets in real-time. Real-time processing allows duty cycling of the analog frontend, which is key to achieve low power consumption. The architecture consists of a programmable application specific instruction set processor and a set of application specific integrated circuits. The design...
In order to meet the need to POS for high accuracy real-time motion imaging in the high resolution earth observation system, an integrated navigation computer based on FPGA and DSP was designed. FPGA independently accomplished the synchronous sampling of GPS data and IMU multichannel pulse signals; the bidirectional communication between DSP and FPGA was in the interrupt mode by EMIF; the navigation...
Not all cameras based on the camera link interface can be displayed directly at present. Therefore, we designed a real-time display system based on the Xilinx Spartan3 FPGA XC3S1000-6FG456I. Our system could receive, store, read and display the camera link signal without the system computer. It contains three main modules. They are the input signal receiving module, the data storing module and the...
For high precision acquiring of low-frequency vibration signal in large-scale area, a data acquisition system employing serial chain structure is implemented. Four data acquisition channels which are based on 24-bit sigma-delta modulator CS5372 and digital filter CS5376A are implemented on each acquisition node. Excellent analog performance with circuit noise less than 1.6 muV and total harmonic distortion...
The trigger system of Beijing Spectrometer III (BES III) is in charge of choosing interested physics events from mass data to compact to the extent that data acquirement system (DAQ) can deal with. The Time-of-Flight (TOF) trigger system, consists of a 9U_size VME TOF trigger module, a VME plug-in rear transmission module, is one of the sub systems of BES III. The sub-system is required to receive...
The digital image acquisition and processing technology already mature also in domains and so on visual communication obtains day by day. However, the image acquisition and processing technology had many kinds, for example white balance processing and image denoising methods. The traditional image acquisition and processing systems are implemented using software by the PC or DSP chip, and sometimes...
This paper presents the features, architecture, application design flow and evaluation of the OReK real-time micro kernel, for integration on FPGA-based SoCs for applications running on embedded softcore or hardwired processors. The features of the OReK kernel include the combined support for heterogeneous task sets, predictable shared resources synchronization, task-based interrupt servicing and...
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