JASRI/SPring-8, Hyogo-ken
RIKEN/SPring-8, Hyogo
* T. Masuda et al., DEVELOPMENT OF A LINUX-BASED SMALL-SIZE CONTROLLER USING POE TECHNOLOGY", Proc. of ICALEPCS'05, Geneva, Switzerland, 2005
| Paper | Title | Page |
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| WEP018 | Evaluation and Improvement of PoE-based Temperature Measurement Module | 207 |
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We developed the PoE-based small-size temperature measurement module*. It consists of a CPU card operated by Linux 2.6 kernel and an RTD card equipped with four-channel inputs of 3-wired Pt100 RTD sensors. We have installed the modules into the machine tunnel of the SCSS (SPring-8 Compact SASE Source) prototype accelerator to measure the air temperatures. The measurement seems to be affected by RF nose because the noise level becomes higher when the machine operations start. We have, therefore, redesigned an RTD card to improve noise immunity to realize precise measurement even under the RF noise. The modifications are as follows; using 4-wired Pt100 sensors with shielded twisted cables, and bringing out the analog ground of the RTD card onto an external connector. In addition, we have increased the number of input channels of the RTD card up to 24. The new module can be also driven with PoE. We have successfully improved the noise immunity and showed the good results of about 0.01°C accuracy during the accelerator operations. Because of its compactness and PoE capability, we will apply the new modules to measure temperatures of insertion device magnets at Japanese XFEL.
* T. Masuda et al., DEVELOPMENT OF A LINUX-BASED SMALL-SIZE CONTROLLER USING POE TECHNOLOGY", Proc. of ICALEPCS'05, Geneva, Switzerland, 2005 |
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Poster |