Power measurement system and power temperature converter
AssigneeFujitsu Limited
InventorsFumio Takei, Kazushi Uno, Takeo Kasajima, Takahiro Kashikawa, Minoru Ishinabe
Life of this patent
Estimating the term…
Abstract
A power measurement system includes: a power temperature converter attached to a power supply line of an electric instrument and having a temperature changed corresponding to a current flowing through the power supply line; a temperature measurement apparatus configured to measure the temperature of the power temperature converter; and an analyzer configured to analyze power consumed by the electric instrument by using a measurement result of the temperature of the power temperature converter obtained by the temperature measurement apparatus.
Claims12
A power measurement system, comprising:
- a power temperature converter attached to a power supply line of an electric instrument and having a temperature changed corresponding to a current flowing through the power supply line;
- a temperature measurement apparatus configured to measure the temperature of the power temperature converter;
- and
- an analyzer configured to analyze power consumed by the electric instrument by using a measurement result of the temperature of the power temperature converter obtained by the temperature measurement apparatus,
- wherein the power temperature converter includes:
- a coil attached to the power supply line of the electric instrument and configured to output a current having a size corresponding to the current flowing through the power supply line by electromagnetic induction;
- a rectifier element configured to rectify the current outputted from the coil;
- a capacitor configured to accumulate charges by being supplied the current rectified by the rectifier element to the capacitor;
- a temperature change element having a temperature changed by a current discharged from the capacitor;
- a switch element configured to switch a connection counterpart of the capacitor between the rectifier element and the temperature change element;
- and
- a discharge control unit configured to control the switch element.
A power temperature converter comprising:
- a coil attached to a power supply line of an electric instrument and configured to generate a current having a size corresponding to a current flowing through the power supply line by electromagnetic induction;
- a rectifier element configured to rectify the current generated by the coil;
- a capacitor configured to accumulate charges by being supplied the current rectified by the rectifier element to the capacitor;
- a temperature change element having a temperature changed by a current discharged from the capacitor;
- a switch element configured to switch a connection counterpart of the capacitor between the rectifier element and the temperature change element;
- and
- a discharge control unit configured to control the switch element.
Dependencies are inferred from the claim text.