System and method for passively compensating pressure sensors

摘要

A temperature-compensated pressure sensor system includes a pressure sensing element, a temperature sensing device, and a temperature compensation network. The pressure sensing element provides a first voltage output representative of a sensed pressure value. The temperature sensing device provides a second voltage output representative of a sensed temperature value. The temperature compensation network is connected to receive the first voltage output provided by the pressure sensing element and the second voltage output provided by the temperature sensing device. The temperature compensation network provides a temperature compensated voltage representative of sensed pressure, wherein the second voltage output passively biases the temperature compensation network.

主权项

1. A temperature-compensated pressure sensor system that comprises:
a pressure sensing element that provides a first voltage output representative of a sensed pressure value; a temperature sensing device located proximate the pressure sensing element that provides a resistance that varies with a sensed temperature; and a resistive temperature compensation network, connected to the pressure sensing element and to the temperature sensing device, that compensates the first voltage output provided by the pressure sensing element, wherein the compensation provided by the resistive temperature network is biased by the varying resistance of the temperature sensing device, and wherein the resistive temperature compensation network is located in a housing separate from the pressure sensing element.