| 摘要 |
<p>PURPOSE:To provide a plant monitoring device capable of easily investigating the cause of plant abnormality. CONSTITUTION:In the plant monitoring device, video information displayed on a display device 2 when abnormality occurs in the plant is successively recorded in a video device 3. A retrieving key code for retrieving plant monitoring history information time-sequentially stored at the time of plant monitoring is converted into a sound signal and stored in the video device 3 as the sound signal together with the video signal. At the time of analyzing plant abnormality, the video information stored in the video device 3 is regenerated and displayed on the display device 2, the retrieving key code information recorded as the sound signal is demodulated, history information corresponding to the key code is accessed from a storage device and displayed on the device 2 simultaneously with the video information. Thus the image information for plant monitoring and information stored in the plant monitoring device are displayed on the same display screen and used for the analysis of a cause.</p> |
