Title:
TEMPERATURE DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/001737
Kind Code:
A1
Abstract:
Provided is a high-accuracy temperature detection device. A D/A conversion circuit is constituted by a ladder network (23), constant current circuits (CC0-CC3), and switch circuits (SW0-SW3). The switch circuits (SW0-SW3) are switched in accordance with adjusted data values determined in advance such that the temperature detection value (Vt) is within a prescribed range, and a diode or other temperature-sensitive circuit is held at a threshold temperature for overheat protection operation. When interrupting a connection between a constant current circuit (CC0-CC3) and a current terminal (N0-N3), each switch circuit (SW0-SW3) connects the constant current circuit in question to a common terminal (Nc), whereby the voltage flowing to the temperature-sensitive circuit is constant irrespective of the adjusted data values, and the correction resolution (∆V) of the temperature detection value (Vt) is constant.
Inventors:
KOBAYASHI ATSUSHI (JP)
Application Number:
PCT/JP2014/003221
Publication Date:
January 08, 2015
Filing Date:
June 17, 2014
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
G01K7/00; G01K7/01; G01K15/00
Foreign References:
| JP2006344721A | 2006-12-21 | |||
| JP2008249374A | 2008-10-16 | |||
| JP2011109592A | 2011-06-02 | |||
| JP2001013011A | 2001-01-19 | |||
| JP2004108987A | 2004-04-08 | |||
| JPH09172374A | 1997-06-30 | |||
| JPH0829269A | 1996-02-02 |
Attorney, Agent or Firm:
KIN, Junhi (JP)
Gold Junki (JP)
Gold Junki (JP)
Download PDF:
Previous Patent: EXPOSURE DEVICE AND LIGHTING UNIT
Next Patent: WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, AND ACTIVE ANTENNA
Next Patent: WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION DEVICE, AND ACTIVE ANTENNA