A system for performing sensor maintenance, including redundant sensors to collect one or more data points; one or more non-transitory storage mediums; a processor; and an output device; wherein one of the non-transitory storage mediums receives the one or more data points; wherein one of the non-transitory storage mediums includes one or more instructions for performing two or more statistical calculations; and wherein the processor carries out the instructions. The method for using the system includes: the non-transitory storage medium receiving one or more data points from the redundant sensors; the processor performing the statistical calculations on the data points to generate one or more processed data points and comparing the processed data points to a threshold value; and the non-transitory storage medium creating an alert when the processed data points exceed a threshold value for a period of time; and displaying the alert on the output device.

A system for performing sensor maintenance, including redundant sensors to collect one or more data points; one or more non-transitory storage mediums; a processor; and an output device; wherein one of the non-transitory storage mediums receives the one or more data points; wherein one of the non-transitory storage mediums includes one or more instructions for performing two or more statistical calculations; and wherein the processor carries out the instructions. The method for using the system includes: the non-transitory storage medium receiving one or more data points from the redundant sensors; the processor performing the statistical calculations on the data points to generate one or more processed data points and comparing the processed data points to a threshold value; and the non-transitory storage medium creating an alert when the processed data points exceed a threshold value for a period of time; and displaying the alert on the output device.

A linear actuator and an identification method thereof are characterized in that a memory unit of the embedding device stores the parameter data of the linear actuator, such as the parameters and the axial position of the elongated shaft, and the microprocessor determines whether the sensing device is activated, and through the process of parameter analysis, data transmission, and algorithm calculation, the calculation control device performs an instantaneous calculation to determine the state of the linear actuator, thereby improving the disadvantage of a single function of the conventional technology, avoiding the problem that the unidentified linear actuator causes the abnormality of the sensing device, and effectively finding the problem of abnormal function of the linear actuator.

A linear actuator and an identification method thereof are characterized in that a memory unit of the embedding device stores the parameter data of the linear actuator, such as the parameters and the axial position of the elongated shaft, and the microprocessor determines whether the sensing device is activated, and through the process of parameter analysis, data transmission, and algorithm calculation, the calculation control device performs an instantaneous calculation to determine the state of the linear actuator, thereby improving the disadvantage of a single function of the conventional technology, avoiding the problem that the unidentified linear actuator causes the abnormality of the sensing device, and effectively finding the problem of abnormal function of the linear actuator.

A field device according to one aspect of the present invention includes a plurality of types of sensors, at least one converter configured to acquire measured results of the plurality of types of sensors and to convert the measured results into measured information, the measured information being a physical quantity, and an information providing device configured to acquire and store the measured information from the at least one converter and to provide the stored measured information to an outside of the field device in a case that a predetermined condition is satisfied.

A field device according to one aspect of the present invention includes a plurality of types of sensors, at least one converter configured to acquire measured results of the plurality of types of sensors and to convert the measured results into measured information, the measured information being a physical quantity, and an information providing device configured to acquire and store the measured information from the at least one converter and to provide the stored measured information to an outside of the field device in a case that a predetermined condition is satisfied.

A microelectromechanical gyroscope which comprises one or more Coriolis masses driven by a drive transducer and a force-feedback system. The force-feedback circuit comprises first and second sideband modulators and the self-test circuit comprises first and second sideband demodulators.

A signal processing device according to an aspect of the present disclosure comprises: cutout means that cuts out a target signal in a predetermined section, and an overlap signal in a section not matching the predetermined section but overlapping with at least part of the predetermined section from an input signal; conversion means that converts the target signal and the overlap signal into a phase component signal in a frequency domain with respect to each frequency; gradient calculation means that, based on the phase component signal, calculates, at each frequency, a phase gradient that is the gradient of the phase component at the frequency; score calculation means that calculates a score relating to the sudden change characteristic of the input signal according to the phase gradients; and determination means that, based on the score, determines the presence or absence of a sudden change in the target signal.

A signal processing device according to an aspect of the present disclosure comprises: cutout means that cuts out a target signal in a predetermined section, and an overlap signal in a section not matching the predetermined section but overlapping with at least part of the predetermined section from an input signal; conversion means that converts the target signal and the overlap signal into a phase component signal in a frequency domain with respect to each frequency; gradient calculation means that, based on the phase component signal, calculates, at each frequency, a phase gradient that is the gradient of the phase component at the frequency; score calculation means that calculates a score relating to the sudden change characteristic of the input signal according to the phase gradients; and determination means that, based on the score, determines the presence or absence of a sudden change in the target signal.

The present invention prevents stoppage or a disruptive accident during operation due to a breakdown in machinery. A waveform analysis device 200 comprises: a sensor unit 300 for detecting a physical phenomenon; a discrete Fourier transform unit 208 for performing a discrete Fourier transform of a detection signal transmitted from the sensor unit 203; a later-stage weighting unit 209 for setting amplitude values at each frequency generated by the discrete Fourier transform unit 208 that exceed a prescribed upper-limit value to said prescribed upper-limit value; and an accumulation unit 210 for adding the amplitude values at each frequency weighted by the later-stage weighting unit 209. An operator console 100 sets the prescribed upper-limit value in the waveform analysis device 200.