Patent ID: 8410801
Filing Date: 2013-04-02
Classification: G01L

Abstract:
1. A pressure detection apparatus comprising: a pressure-sensitive resistor whose first resistance r a temperature-sensitive resistor which has a same resistance-temperature coefficient as the pressure-sensitive resistor and whose second resistance r wherein one end of the pressure-sensitive resistor and one end of the temperature-sensitive resistor are connected to the first constant-current source and the second constant-current source respectively, and the other end of the pressure-sensitive resistor and the other end of the temperature-sensitive resistor are connected to each other; a current source for supplying a current to the pressure-sensitive resistor and the temperature sensitive resistor, the current source having a first constant-current source that supplies a predetermined first constant current i the current source adjusting magnitudes of the predetermined first constant-current i a pressure signal generation output section which generates and outputs a first voltage signal S