Title:
温度検出装置
Document Type and Number:
Japanese Patent JP7201462
Kind Code:
B2
Abstract:
To more accurately detect a temperature of a temperature measurement target in a rotor.SOLUTION: A temperature detector 10 comprises: a thermistor 33 and a power receiving circuit 34 provided on a rotation unit 30; a power feeding circuit 28 and an arithmetic logical unit 26 provided on a stationary unit 20. The thermistor 33 is attached to a temperature measurement target. The power receiving circuit 34 supplies electric power transmitted through high-frequency magnetic field to the thermistor 33. The power feeding circuit uses a high frequency power source 24 to convert a voltage outputted from a direct current power source 21 into high frequency voltage, converts the high frequency voltage into high-frequency magnetic field using a coil 25, and transmits electric power via high-frequency magnetic field to the power receiving circuit 34 in a non-contact manner. The arithmetic logical unit 26 calculates active power to be supplied to the high frequency power source 24, calculates resistance of the thermistor 33 on the basis of the calculated active power, and detects a temperature of the temperature measurement target from the calculated resistance of the thermistor.SELECTED DRAWING: Figure 1
Inventors:
Hojo Yoshihisa
Application Number:
JP2019014569A
Publication Date:
January 10, 2023
Filing Date:
January 30, 2019
Export Citation:
Assignee:
Toyo Denki Manufacturing Co., Ltd.
International Classes:
G01K1/024; G01K7/24; H02K11/25
Domestic Patent References:
| JP2002039088A | ||||
| JP6051004A |
Attorney, Agent or Firm:
Kenji Sugimura
Mitsutsugu Sugimura
Makoto Fukuo
Keita Tsuji
Mitsutsugu Sugimura
Makoto Fukuo
Keita Tsuji