A method of monitoring the condition of apparatuses wherein the condition of the apparatus is measured from one or more rotating objects by means of a fixedly mounted condition monitoring system during the operation of the apparatus when it operates at its normal operating speed. In the method, at least one signal indicating the condition of the apparatus and the steadiness of the operation is measured during the change in the operating speed of the apparatus and desired characteristic values and/or functions are calculated from each signal measured in this manner as a function of measured time and/or rotational speed.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation of International Patent Application PCT/FI00/00626 filed Jul. 6, 2000, now abandoned which designated the United States and was published under PCT Article 21(2) in English.
A system for preventative maintenance of a ride or an attraction component at a venue. A validator establishes the identity of the ride or attraction component and a controller monitors the use of the ride or attraction component. The controller also manages the ride or attraction component's availability for patron usage and transmits this information to a system control panel. A blocking device controlled by the panel prevents patron usage of a ride or attraction component that is in non-compliance with pre-established operating standards.
A system for preventative maintenance of a ride or an attraction component at a venue. A validator establishes the identity of the ride or attraction component and a controller monitors the use of the ride or attraction component. The controller also manage the ride or attraction component's availability for patron usage and transmits this information to a system control panel. A blocking device controlled by the panel prevents patron usage of a ride or attraction component that is in non-compliance with pre-established operating standards.
The method serves to determine the vibrational state of turbine blades, arranged on a rotor shaft, mounted such as to rotate in a housing and/or of guide vanes. At least one electromagnetic wave is transmitted into a flow channel in the vicinity of the blades, using means for the generation of at least one electromagnetic wave. The electromagnetic waves are at least partly reflected from at least one blade. The reflected part of the at least one electromagnetic wave is received by means for receiving and the vibrational state of the corresponding blade is determined from a signal corresponding to the at least one received electromagnetic wave.
