Finally it is converted to digital value by ADCs and stored in a dual port memory, which can functions are shown in Table 1. The timestampLib provides rate, it was acceptable to the DAQ system, even if there was another system time information with various display formats on operator extra propagation delay for data transition to host processor.
One interface OPI. The sysMonLib gathers a health status of installed considering point of using QDC is biased current, so-called pedestal. The cltuLib controls the timing board, LTU. The LTU has pre-programmed supplied driver that runs in Linux kernel mode.
We developed the LTU control driver in a static library. It is ment threads using the SFW supplied functions. The LTU digitizer has two independent threads. One is the control thread to provides only global sequences with limited function, but the DAQ handle digitizer asynchronously. The other is the acquisition thread system needs additional functions such as signal dump, delivery, to control data archive scheme, which depends on local digitizer and generating dummy pulse for background.
A TS signal generator feature. TSSG was developed for those functions and runs as a stand-alone Usually mechanisms for direct memory access, block data trans- device. It takes power from the VME crate and has Ethernet inter- mission process and interrupt service routine are implemented in face.
It also operates as a single IOC server. In the case of data pool management mechanism, a data acquisition system hardware and connection interface.
The data pool has linked list data structure for each digitizer. The SFW uses message queue com- munication between acquisition thread and buffer thread.
Besides 3. Software architecture three supplied threads mentioned above, a calculation thread is used in the TSDAQ. It is similar to the buffer thread but designed As many other control and data acquisition systems in KSTAR for the real time data analysis during the plasma shot. Representative Post-processing, and Data transfer.
The QDC control component prepares raw data state if all sub-nodes are in the same state. When sub-nodes are in saving into the host system. Due to a straight light, there is a small data variation Wait for trigger. Operation sequence and state transition a full cycle of acquisition procedure and calculates data variation of two signal sections. The calibration mode the state returns to Arming.
Pedestal value and Jitter ratio per channel are also acquired actual data in hardware buffer after getting shot start event from in this operation mode. The local operation mode is used for fully the CCS promptly.
As soon as it gets a valid data in the hardware integrated test without plasma. The actual experimental data is buffer, the state is changed to During DAQ. Generally operators can acquired and transmitted to the central data-base server in the know the LTU is started at this time. Data parsing or data 15 min. After the system is initiated, the TSDAQ system works auto- transfer between digitizer and host system can be performed in matically without any manual operation.
The experiment sequence Post-processing. FA-M3V 19 Pages. RAMC 24 Pages. Yokogawa Field Wireless Solution 9 Pages. Platform for Advanced Control and Estimation 5 Pages.
Differential Pressure Level Solutions 7 Pages. Yokogawa in the upstream industry 9 Pages. Temperature Sensing Solutions 4 Pages. Product Solution Catalog 8 Pages. OX 2 Pages. Liquid Analyzer Sensors and Fittings 12 Pages. MW 5 Pages. FieldMate 5 Pages. Exapilot 5 Pages. Exaquantum 5 Pages. BUAQ 12 Pages. It also includes several new subjects and expands on selected items including Fundamental Signal Conditioning.
All chapters have been enhanced to address more practical applications than theoretical measurement issues. They cover a major topic with sufficient detail to help readers understand the basic principles of sensor operation and the need for careful system interconnections.
0コメント