Valve with capability to self-anticipate failure

A valve with capability to self-anticipate failure, comprising:

• a body formed with a hollow chamber;
• a valve door mounted in the hollow chamber to open and close the hollow chamber;
• a spindle inserted into the body and connected with the valve door to rotate with the valve door;
• an actuator mounted on the body to drive the spindle to rotate;
• a first sensor assembly having sensors mounted on the spindle, the valve door, the body, or a pipeline connecting the body to output time-dependent sensing signals of a first operation parameter of the spindle, a second operation parameter of the valve door, a third operation parameter in relevant to the body, or a fourth operation parameter in relevant to the pipeline during each stroke from opening to closing of the valve door;
• and
• a controller disposed near the body and electrically connected with or in telecommunication with the actuator and the first sensor assembly, the controller comprising:
• a storage unit used to receive and store the time-dependent sensing signal of one of the first, second, third, and fourth operation parameters, or to receive and store computed time-dependent values of a synergistic operation parameter representing comprehensive effects of the first, second, third, and fourth operation parameters, wherein each of the computed time-dependent values of the synergistic operation parameter is a sum of respective products of the corresponding time-dependent sensing signal of the first, second, third, and fourth operation parameters and a plurality of corresponding weighting values;
• a computation unit in electrical connection with the storage unit to compute out a first trendline of the last plurality of the stored time-dependent sensing signals of the first operation parameter, a second trendline of the last plurality of the stored time-dependent sensing signals of the second operation parameter, a third trendline of the last plurality of the stored time-dependent sensing signals of the third operation parameter, a fourth trendline of the last plurality of the stored time-dependent sensing signals of the fourth operation parameter, or a synergistic trendline of the last plurality of the stored computed time-dependent values of the synergistic operation parameter, and to compute out a first accumulated-time threshold of the valve corresponding to a threshold of the first operation parameter over the first trendline, a second accumulated-time threshold of the valve corresponding to a threshold of the second operation parameter over the second trendline, a third accumulated-time threshold of the valve corresponding to a threshold of the third operation parameter over the third trendline, a fourth accumulated-time threshold of the valve corresponding to a threshold of the fourth operation parameter over the fourth trendline, or a synergistic accumulated-time threshold of the valve corresponding to a threshold of the synergistic operation parameter over the synergistic trendline;
• and
• an informing unit in electrical connection with the computation unit to output one of the first accumulated-time threshold, the second accumulated-time threshold, the third accumulated-time threshold, the fourth accumulated-time threshold, and the synergistic accumulated-time threshold.