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Test Program Set (TPS) runtime is one of the most important aspects in repair throughput. Considering the testing required to detect and isolate faults or failures and then verify repair during a typical maintenance event, the individual elements of a test program are usually executed at least twice. Any reduction in test execution time is therefore multiplied, increasing the importance of optimizing...
Advances in medical devices and health care has been phenomenal during the recent years. Although medical device manufacturers have been improving their instruments, network connection of these instruments still rely on proprietary technologies. Even if the interface has been provided by the manufacturer (e.g., RS-232, USB, or Ethernet coupled with a proprietary API), there is no widely-accepted uniform...
New kind of vehicle exhaust gas measurer based on CPLD is designed. Hardware circuit block diagram of exhaust gas measurer is introduced, since P89C668 single chip machine has only a UART, ISP programming port, micro-printer interface and last position machine communication port need to serial communication. To solve this contradiction, is choiced interface design for EPM7128SLC84-15 chip, which single...
In the paper is proposed the use of the personal digital assistant (PDA) to share the common sense of time to the measurement instruments (MIs) not reachable, or not convenient to reach, by wired or wireless connections to the distributed measurement system (DMS). For this reason is not possible to use the standard synchronization protocol, or the propagation of a electromagnetic signal used as reference...
The research is devoted to investigate about the coordination in the time domain of the operations executed by the Measurement Instrument (MI) connected to the node of the Distributed Measurement System (DMS), by hardware interface, and the node clock. To avoid the random effects of concurrency of the software processes, the interface is based on the Programmable Logic Device (PLD). From the analysis...
A concept of an active instrument controller with a script interpreter is proposed. It represents a gateway between the computer network and the instrument bus, but, in addition, it can locally execute the measurement script. This introduces distributed code execution in the measurement system, where time-critical measurement loops are locally executed with the main program running on a personal computer...
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