公开(公告)号：US20170052141A1

公开(公告)日：2017-02-23

申请号：US15238068

申请日：2016-08-16

Applicant: MAGNETI MARELLI S.p.A.

Inventor： Matteo BOSIO ,  Piero CARBONARO ,  Fausto CALCAGNO

IPC: G01N27/406 ,  F01N13/08 ,  F01N13/00 ,  G01N27/409 ,  F02M35/10

CPC classification number: G01N27/4065 ,  F01N13/008 ,  F01N13/08 ,  F01N2900/1402 ,  F02M35/10393 ,  G01N27/4067 ,  G01N27/407 ,  G01N27/409

Abstract: A control circuit for a single-cell linear oxygen sensor having a first and a second electrical terminals on which a first voltage and respectively a second voltage are present, wherein a cell current between the first and second electrical terminals is indicative of a detected oxygen concentration, and wherein the control circuit generates a biasing voltage between the first and the second electrical terminals with a preset pattern as a function of the cell current. The circuit envisages: a transresistance block, coupled to the second electrical terminal to generate a processed voltage as a function of the cell current and based on the preset pattern; and an adder stage, coupled to the transresistance block and to the second electrical terminal, to perform a sum between the processed voltage and the second voltage, to generate the first voltage for the first electrical terminal of the linear oxygen sensor, so that the biasing voltage has the preset pattern as a function of the cell current.

Abstract translation: 一种用于具有第一和第二电端子的单电池线性氧传感器的控制电路，其上存在第一电压和相应的第二电压，其中第一和第二电端子之间的电池电流指示检测到的氧浓度 并且其中所述控制电路以所述单元电流的函数以预设图案在所述第一和第二电端子之间产生偏置电压。 电路设想：跨阻块，耦合到第二电端子以产生作为电池电流的函数的处理电压并且基于预设模式; 以及耦合到跨阻块和第二电端子的加法器级，以执行处理电压和第二电压之间的和，以产生线性氧传感器的第一电端子的第一电压，使得偏置 电压具有作为电池电流的函数的预设模式。