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There are a large number of distributed control and monitoring devices in magnetic confinement fusion facilities. It is essential to conduct real-time monitoring of key parameters (such as temperature and voltage) of these devices, which is of great significance for ensuring the safe operation of the facilities and their associated systems.
This paper designs a set of monitoring equipment with Field Programmable Gate Array (FPGA) as the core based on the PTPv2 protocol. First, the equipment supports the PTPv2 protocol to ensure consistent timestamps among acquisition and monitoring devices. Second, it is equipped with multi-range voltage conditioning and wide-temperature-range temperature acquisition channels, which, combined with a high-resolution analog-to-digital conversion module, enable dynamic acquisition and data processing of weak signals. Third, the equipment features self-test and remote start-up functions, facilitating remote device management.
Test results show that the synchronization accuracy between devices is better than 50 ns; the voltage measurement accuracy is better than 0.04% F.S. in the low range (0–1 V) and better than 0.02% F.S. in the high range (1–10 V); within the temperature range of 20 K to 325 K, the acquisition error does not exceed 0.13 K. All these indicators meet the design requirements.
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| IEEE Member | No |
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