Sensorsystem mit Vollbrückenkonfiguration von vier resistiven Sensorelementen

Details

Veröffentlichungs-Nr.

EP2955492

Aktenzeichen

EP14172427

Anmeldetag

13. Juni 2014

Veröffentlichung

10. Mai 2017

Erteilung

10. Mai 2017

Rechtsraum

EP

IPC

G01D18/00

Abstract

It is described a sensor system (100, 200, 300) comprising (a) a first sensor path (110) comprising a first sensing element (111) and a second sensing element (112) being connected in series between a first supply terminal (st1) and a second supply terminal (st2) and an intermediate node (in, in1) being provided in between the first supply terminal (st1) and the second supply terminal (st2), (b) a second sensor path (120) comprising (b1) a third sensing element (123) and a fourth sensing element (124) being connected in series between the first supply terminal (st1) and the second supply terminal (st2), wherein the third sensing element (123) is subdivided into a first third subcomponent (R3a) and a second third subcomponent (R3b) and the fourth sensing element (124) is subdivided into a first fourth subcomponent (R4a) and a second fourth subcomponent (R4b), (b2) a first reference node (rn1) being provided in between the first supply terminal (st1) and the second supply terminal (st2), and (b3) a second reference node (rn2) being provided in between the first supply terminal (st1) and the second supply terminal (st2) and being different from the first reference node (rn1), and (c) a processing unit (150, 250, 350) receiving an input signal (vinp) from the intermediate node (in, in1), a first reference signal (vrefp) from the first reference node (rn1), and a second reference signal (vrefh) from the second reference node (rn2) and being configured for providing a sensor output signal (dout) based on the input signal (vinp), the first reference signal (vrefp) and the second reference signal (vrefn).

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete