| 摘要 |
An automatic testing system for on-line testing of a transducer-excitation source, provides on line testing of the magnitude of current provided to a transducer. The system also enables testing of excitation source redundancy. The system includes an excitation source; an electrical element; a connection device, having an output, for selectively connecting the output to one of the transducer and the electrical element, and for selectively connecting the excitation source to one of the electrical element and the transducer, in accordance with at least one control signal; and control device for providing the at least one control signal to connect the excitation source to the electrical element during a predetermined time and to the transducer during another predetermined time so that the transducer remains on line.
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