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AssigneeMitsubishi Heavy Industries, Ltd.
InventorHideaki Emoto
Estimating the term…
A device and method for diagnosing a signal status relating to measurement, drive, and control by a measuring means, a drive means, and a controlling means. The device and method enables prevention of an increase of manufacturing cost due to an increase of the number of parts or due to complication of the circuit scale and enables precise transmission of the measurement result and soundness diagnosis of a circuit by using a simple constitution. A means for generating an alternating current including a rectangular pulse is connected to the primary side of a transformer, and a driven body to be measured, driven, or controlled is connected directly to the secondary side or indirectly through a rectifier circuit to the secondary side. The power sent through the transformer is consumed by the movement of the driven body. Consequently, the variation of the primary current is measured, and the movement of the driven body and a signal status are diagnosed on the basis of the measurement result.
A method for diagnosing signal status in measurement, drive, or control by a measuring, drive or control means, by connecting a signal generating means for generating an alternating voltage including a pulse voltage to the primary side of a transformer and a device-to-be-driven for performing measurement, drive, or control to the secondary side of the transformer, comprising
A device for diagnosing signal status in measurement, drive, or control by a measuring, drive or control means comprising a transformer, a signal generating means for generating an alternating voltage including a pulse voltage connected to the primary side of the transformer, and a device-to-be-driven for performing measurement, drive, or control connected to the secondary side of the transformer, wherein is provided a measuring means for measuring change in the current of the primary side caused by electric power consumed for the action of the device-to-be-driven, whereby diagnosis of signal status in the measurement, drive, or control by the device-to-be-driven is performed based on the measurement result of said change in current.
A transformer used in a device for diagnosing signal status in measurement, drive, or control performed by a device-to-be-driven in a circuit in which a signal generating means for generating an alternating voltage signal including a pulse voltage is connected to the primary side of the transformer and said device-to-be-driven is connected to the secondary side of the transformer, said signal status being diagnosed based on measurement result of change in the primary side current of the transformer caused by the drive of a signal conversion circuit for converting the operation condition of said device-to-be-driven to a current signal, wherein said transformer adopts core material small in change of core loss by temperature change, and composed such that an intermediate tap is provided to the primary winding thereof to be connected to a current measuring means, the primary coil being divided into an anterior half and a posterior half such that the secondary coil is sandwiched by both the anterior half and posterior half of the primary coil with the intermediate tap taken out from the center of the primary coil.
Dependencies are inferred from the claim text.