摘要:
A nuclear power plant control system 1 includes control devices 30a and 30b, and the control devices 30a and 30b each include arithmetic units 32a and 32b that respectively execute arithmetic processing in parallel independently, based on detection results of detection units 10a to 10d, and each output a control signal to control a countermeasure unit 40a or 40b in accordance with an arithmetic result of the arithmetic processing, a transmission unit 33 that sends out the control signal to the countermeasure unit 40a or 40b, when the control signal is outputted from at least one of the arithmetic units 32a and 32b, and a system management unit 34 that performs control so as to inhibit the control signal outputted by the arithmetic unit as a test object from being sent out from the transmission unit 33 while maintaining a state where the other arithmetic operation executes the arithmetic processing independently, when a test of either of the control devices 30a and 30b is conducted.
摘要:
The invention relates to a field device for process instrumentation, in particular a measurement transducer (1), having an analog output (30) to which a two-wire line (10, 11) can be connected for transmitting an analog output signal (7). A unit (12a, 12b, 12c, 12d) galvanically separates the processor (5) from an analog output circuit. A read-back channel (12c, 15) for a pulse-width modulated digital signal (13), which is tapped behind an element (12b) for galvanic separation, is provided for monitoring the generation of the analog output signal (7), and a unit (18, 19) is provided for monitoring the analog output signal (7) for maintaining a specifiable maximum deviation from a reference signal (17), which is generated in the same manner as the analog output signal (7) by low-pass filtering from the pulse-width modulated digital signal (13). The novel monitoring unit has the advantage that, in particular in case of transient signals, error states can be detected more quickly and that appropriate measures for reacting to error states can therefore be taken in less time.
摘要:
An operation control apparatus includes a command generation portion that generates a command signal for commanding operation of a control surface, and first and second monitoring portions that monitor an abnormality of operation of first and second control portions, respectively, of the actuator control apparatus. The actuator control apparatus includes first and second control portions that generate a control signal for an actuator for driving the control surface and that are different in design, and a switching unit that switches the connection to the actuator from one of the first and second control portions to the other, when an abnormality is detected by the first and second monitoring portions. Accordingly, it is possible to monitor a generic failure, and realize redundancy enabling control of the overall operation of the actuator, from start to finish, when a generic failure has occurred, thus realizing further simplification and streamlining of the configuration.
摘要:
In order to provide a method for the diagnostic monitoring of the operating states of a plurality of technical systems (1) distributed among different locations, particularly wind energy plants, by means of receiving status codes (19) output by at least one memory programmable control system (SPS) (5, 6) disposed on the system side, wherein an exchange of information is carried out with remote monitoring units (160, 170, 15, 16, 17) that are disposed outside of the technical systems (1) and at a distance thereto and configured separately, which enables the integration, even subsequently, of a wide variety of systems to be monitored regardless of a central service provider in an error-tolerant and flexible manner, according to the invention operating data is associated with each status code (19) on the system side for analyzing the status code (19), a complex status signal (11) is subsequently generated from one or more status codes (19) and the associated operating data, and the complex status signal (11) is transmitted to the remote monitoring units (160, 170, 15, 16, 17) as part of the exchange of information.
摘要:
The invention relates to a method for condition monitoring a rotor of a wind energy plant. The method comprises the steps of measuring activity signals of the blades in said rotor and establishing one or more differential values between the activity signals of different blades. The one or more differential values are used for monitoring the condition of the rotor in the wind energy plant. The invention also relates to a wind energy plant, a cluster of wind energy plants and use hereof.
摘要:
A system operable to monitoring bio/chemical activities includes a first measurement probe, a second measurement probe and a comparator. The first measurement probe is operable to interrogate one or more physical properties of a sample at a first location of the sample, and to output, in response, a first measurement signal. The second measurement probe is operable to interrogate one or more physical properties of the sample at a second location of the sample, and to output, in response, a second measurement signal. The comparator is coupled to receive the first and second measurement signals, the comparator configured to output a difference signal comprising the difference between the first and second measurement signals, the difference signal corresponding to the difference in one or more bio/chemical activities occurring at the first location of the sample relative to the second location of the sample.
摘要:
In a method of analysing process signals in a technical installation, especially a power station installation, in which the plant process is divided into function units (FEi), according to the invention, in order simplify signal tracing in a diagnosis or for a prognosis of the status of the installation, a test is first made for each process signal (PSi) and each function unit (FEi) to discover whether said process signal (PSi) is part of said function unit (FEi). Then the degree of correlation of two process signals (PSi) is determined on the basis of the number of those function units (FEi) in which they are a common component. Finally, for a predetermined process signal (PSi), the process signals (PSi) correlated therewith are shown mutually positioned in such a way that the distance between two information components (Ii(PSi)) represents the degree of their correlation.
摘要:
A monitoring system for detecting failures, or impending failures, in subsystems of a fly-by-wire primary flight control system of an aircraft. The system monitors a critical variable of at least two controllers (102,112) acting in concert, in real time. Differences between the critical variables are calculated and, after filtering to remove insignificant variations, is estimated based on significant detected variations. Depending upon the relative severity of the estimated fatigue damage, the aircraft's primary flight control computer is programmed to shut down the malfunctioning subsystem, display a message indicating need for repair, or take other appropriate action.
摘要:
Data presented in a visual image is monitored and verified. A processing component 104 receives data from sensors and other sources, and interprets the data to generate processed data. A render component 106 generates a visual image based on the processed data. A projector component 108 projects the image, which is received by a splitter component 112 that splits the light stream of the image and routes a portion of light energy to the display screen viewed by the user and another portion of the light energy to a data verification component (DVC) 114. DVC 114 interprets information presented in the image to determine the data being presented to the user by the image. DVC 114 also receives the processed data from the processing component 104. DVC 114 compares the data determined from the image to the processed data to determine whether they match and takes appropriate responsive action if they do not match.
摘要:
A method of processing sensor logs is described. The method includes accessing a first sensor log and a corresponding first reference log. Each of the first sensor log and the first reference log includes a series of measured values of a parameter according to a first time series. The method also includes accessing a second sensor log and a corresponding second reference log. Each of the second sensor log and the second reference log includes a series of measured values of a parameter according to a second time series. The method also includes dynamically time warping the first reference log and/or and second reference log by a first transformation between the first time series and a common time-frame and/or a second transformation between the second time series and the common time-frame. The method also includes generating first and second warped sensor logs by applying the or each transformation to the corresponding ones of the first and second sensor logs.