PCaPAC Traditional Topics

Low-Cost Control Systems

Paper Title Page
WEP010 Development of a PC/104-Plus Based CPU Module with Power over Ethernet Capability 186
  • M. Ishii, T. Masuda, T. Ohata, R. T. Tanaka
    JASRI/SPring-8, Hyogo-ken
  We developed a PC/104-Plus based CPU module with power over ethernet (PoE, IEEE 802.3af) capability. It is based on RENESAS* SH-4 CPU that is used for embedded applications requiring both high performance and low power consumption. We ported Linux 2.6 kernel to the CPU module and set up to run on diskless environment of NFS root. By stacking a dedicated PoE low power module onto the CPU module, it runs without a direct DC power supply. The PoE capability has advantages of power cable saving and power management by remote operation via a power sourcing equipment such as a switching hub. We can choose stackable PC/104 or PC/104-Plus peripheral I/O modules from a variety of commercial products such as analog inputs and outputs or digital inputs/outputs. Therefore, we can assemble a compact, flexible and low-cost embedded-measurement instrument. As a first application, we have a plan to apply the CPU module to a precise analog-signal measurement such as a digital voltmeter. We will report the influence of the PoE power sourcing on the precise measurement.

* http://www.renesas.com/

poster icon Poster  
WEP011 Experience Using Credit-Card Size Boards Based on Coldfire Processors and Running Under ucLinux 189
  • G. Bassato
    INFN/LNL, Legnaro, Padova
  • W. Zou
    CIAE, Beijing
  Coldfire processors find an ideal application as compact, low-cost controllers thanks to the extremely low power dissipation and the wide range of embedded peripherals. We report some experiences using commercially available credit-card size boards based on the Coldfire MCF5329 processor and running under Emlix ucLinux.  
poster icon Poster