Patent ID: 9091598
Filing Date: 2015-07-28
Classification: G01C,G01K

Abstract:
1. A circuit comprising: a current source; a bridge network including: a first node and a second node, the first node coupled to the current source; a first branch coupled between the first node and the second node; a second branch coupled in parallel with the first branch between the first node and the second node; wherein the first branch includes a first temperature sensing element of a first resistive temperature device in series with a first resistor; wherein the second branch includes a second temperature sensing element of a second temperature device in series with a second resistor; a first output that provides a signal representing a difference between a voltage developed across the first temperature sensing element and a voltage developed across the second temperature sensing element; and a second output providing a voltage representing a difference in voltage between the first node and the second node; wherein the first resistive temperature device and the second resistive temperature device are located within a ring laser gyroscope and positioned to measure a temperature differential across a laser block sensor of the ring laser gyroscope.