46results about How to "High precision diagnosis" patented technology

An object of the invention is to diagnose a failure of an addition valve provided in the exhaust system of an internal combustion engine. To achieve the object, post injection through a fuel injection valve of the internal combustion engine and reducing agent addition through the reducing agent addition valve are performed at different timings, the quantity of fuel injected through the fuel injection valve when the post injection is performed and the quantity of reducing agent added through the reducing agent addition valve when the reducing agent addition is performed are estimated based on a same parameter, and it is diagnosed that the reducing agent addition valve has a failure on condition that the difference between the estimated fuel quantity and the estimated reducing agent quantity exceeds a predetermined quantity.

In a passenger conveyer abnormality diagnosis system, sound data of escalator operating sound of a plurality of revolutions is collected by a moving sound collector provided for an inspection step and then processed into a data set for diagnosis with an accidental external noise component removed. The data set for diagnosis sent from a data transceiver through a communication network to a remote monitoring apparatus installed at a remote-located monitoring center. The remote monitoring apparatus diagnose the presence of abnormalities of the escalator based on the data set for diagnosis.

A power conversion device provided with a DC power source, a voltage boost converter, an inverter, a primary smoothing capacitor, a secondary smoothing capacitor, an intermediate capacitor provided in the voltage boost converter and three voltage sensors which measure the voltages of the capacitors, further including an abnormality diagnosis controller which makes a diagnosis of the presence / absence of an abnormality in the detection characteristics of the voltage sensors, on the basis of the state of transition of the detection results of the voltage sensors which are monitored during a discharge operation by the respective capacitors.

A power supply unit for an aerosol suction device includes: a power supply capable of discharging to a load for generating an aerosol from an aerosol generation source; and a controller capable of controlling charging and discharging of the power supply. The controller is capable of operating in a charging mode for controlling charging of the power supply, a first mode different from the charging mode, and a second mode different from the charging mode and the first mode, and is capable of executing diagnosis processes of the power supply in each of the first mode and the second mode.

Provided is a novel heart failure diagnostic device capable of performing high-precision diagnosis of heart failure based on respiratory stability on the basis of the detection results of a flexible piezoelectric sensor sheet that does not need to be worn on a user. A heart failure diagnostic device (10) diagnoses heart failure using an index generated on the basis of the standard deviation of the respiratory rate of a user (P), the heart failure diagnostic device (10) comprising: a flexible piezoelectric sensor sheet (12) that outputs a detection signal in accordance with input vibration; a respiration signal acquisition unit (40) that extracts, as a respiration signal, a signal of a vibration frequency caused by respiration from a detection signal of the piezoelectric sensor sheet (12); and a power spectrum calculation unit (44) that calculates the power spectrum of the respiratory band on the basis of the respiratory signal, the heart failure diagnosis device (10) being provided with a signal correction unit (12). And a signal correction unit (12) that corrects the detection signal so that the maximum value of the primary frequency component of the respiratory waveform in the power spectrum is 1.5 times or more of the maximum value of the secondary frequency component of the respiratory waveform, thereby forming the respiratory signal.