초록 ▼

A process device couples to a process control loop. The process device receives process signals. A memory in the process device contains a nominal parameter value and a rule. Computing circuitry calculates a statistical parameter of the process signal and operates on the statistical parameter and th

A process device couples to a process control loop. The process device receives process signals. A memory in the process device contains a nominal parameter value and a rule. Computing circuitry calculates a statistical parameter of the process signal and operates on the statistical parameter and the stored nominal value based upon the stored rule and responsively provides an event output based upon the operation. Output circuitry provides an output in response to the event output

대표청구항 ▼

1. A process device coupled to a process control loop configured to control a process fluid, comprising: a process variable input to receive a process variable of the process control loop, the process variable related to the process; a process event input to receive a process event generated by a p

1. A process device coupled to a process control loop configured to control a process fluid, comprising: a process variable input to receive a process variable of the process control loop, the process variable related to the process; a process event input to receive a process event generated by a process device on the process control loop related to an occurrence of an event in the process, the process event selected from the group of process events consisting of drift, bias, noise, stuck and spike; a control signal input to receive a control signal and to control the process fluid; and an inference engine coupled to the process variable input the control signal input and the process event input, the inference engine having a faulty element output which is a function of the process variable, the control signal and the process event, the faulty element output identifies a faulty component in the process which caused the process event.