Title:
WIND-SPEED MEASUREMENT DEVICE AND WIND-VOLUME MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/047385
Kind Code:
A1
Abstract:
Provided is a wind-speed measurement device that has a simple configuration and high measurement accuracy and can be manufactured cheaply. The present invention comprises a fixed-temperature heat-emitting device 10 that emits heat at a predetermined set temperature. The fixed-temperature heat-emitting device 10 comprises a power source Vcc, a heat-emitting element 21 (positive thermistor elements PCT1-PCT3), a switching element Q1, a comparator element Cmp1, a first negative thermistor element NTC1, and a plurality of resistance elements R1-R5. The heat-emitting element and the first negative thermistor NTC1 are arranged at a wind-speed measurement point. The switching element Q1 switches on and off to make the heat-emitting element 21 emit heat at the set temperature. Pulsed voltage is applied to the heat-emitting element 21 from the power source Vcc, and the wind speed at the wind-speed measurement point is calculated on the basis of the waveform of the applied pulsed voltage.
Inventors:
KITAMURA AKIHIRO (JP)
Application Number:
PCT/JP2017/010050
Publication Date:
March 15, 2018
Filing Date:
March 13, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G01P5/12; G01F1/699
Foreign References:
| US20130125643A1 | 2013-05-23 | |||
| JP2012052808A | 2012-03-15 | |||
| JP2008014729A | 2008-01-24 | |||
| US20060100795A1 | 2006-05-11 | |||
| JP2003240620A | 2003-08-27 | |||
| US6035726A | 2000-03-14 | |||
| JPH11326003A | 1999-11-26 |
Attorney, Agent or Firm:
KAWAMOTO, Takashi (JP)
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