公开(公告)号：JPH01239411A

公开(公告)日：1989-09-25

申请号：JP1739389

申请日：1989-01-26

Applicant: MARELLI AUTRONICA

Inventor： SHIRUBUANO DONACHI ,  ROBERUTO DEIRUAKUA ,  JIYOBUAANI BURUNETSUCHI ,  GIUZETSUPE DEIRORUTO

IPC: G01C9/18 ,  G01C9/06 ,  G01C9/20

Abstract: PURPOSE: To measure a steep inclination of 60 deg. or more accurately by encapsulating a conductive liquid between two supporting plates through an annular spacer and forming a specific electrode of circular segment on the supporting plate. CONSTITUTION: A closed chamber 6 is formed by ceramic supporting plate elements 1, 2 and an annular spacer 3 and encapsulating a conductive liquid 11 in the chamber 6. A pair of semicircular auxiliary electrodes 4, 5 of circular segment are formed on one of the supporting plate elements 1, 2 while a main electrode 7 is formed on the other element and they are connected through a conductive connecting part 10 to a predetermined monitor circuit. When the sensor inclines in one direction, the electric resistance increases between one auxiliary electrode and the main electrode but decreases between the other auxiliary electrode and the main electrode and thereby the inclination angle can be measured. This sensor can measure and monitor a steep inclination angle of ±60 deg. or more with a measurement error of ±2 deg..

公开(公告)号：JPH01321332A

公开(公告)日：1989-12-27

申请号：JP15106388

申请日：1988-06-17

Applicant: MARELLI AUTRONICA

Inventor： ROBERUTO DEIRUAKUA

IPC: G01L9/04 ,  G01L9/00 ,  H01L29/84

Abstract: PURPOSE: To reduce the cost by making a recess in a support so that the support can be deformed elastically and providing a piezoelectric resistance sensitive element and a conductive means. CONSTITUTION: A hard supporting plate 1 made of a ceramic material is provided, in one surface 1a thereof, with a recess 2 having bottom wall face part 2a made of a thin film so that the support plate can be deformed resiliently under action of a force or pressure to be measured. The supporting plate 1 is provided, in the other surface 1b thereof, with four thick films or thin film resistors R functioning as a piezoelectric element by silk screen printing. These resistors R are interconnected to form a Wheatstone bridge circuit. Similarly, a conductive strip C is formed by silk screen printing onto the surface 1b of supporting plate 1 at each joint of resistors R. Furthermore, these resistors R are connected with a processing circuit 3. According to the constitution, manufacturing cost can be reduced.