Patent ID: 11920457
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 18:
19. A method for fabricating a sensor for a downhole tool comprising:
integrating a plurality of strain gauges onto a single substrate of the sensor, wherein the sensor is configured to measure axial strains and torsional strains on a collar when the sensor is secured within the collar for measuring one or more operational characteristics including a condition of the downhole tool;
coupling the single substrate to a metal support structure;
attaching wires to the single substrate coupled to the metal support structure for providing electrical connections to the plurality of strain gauges;
integrating a printed circuit board (PCB) onto the single substrate, the PCB including electronics and configured to concurrently calibrate the electronics and the plurality of strain gauges based on a predetermined calibration parameter, which is stored in the electronics on the PCB and control operation of the sensor in measuring the one or more operational characteristics of the downhole tool and a temperature sensor in proximity to the plurality of strain gauges and configured to measure temperature at the plurality of strain gauges, wherein the plurality of strain gauges is configured and controlled based at least in part on the temperature at the plurality of strain gauges;
connecting the electronics of the PCB to the plurality of strain gauges with the wires; and
concurrently calibrating the electronics and the plurality of strain gauges as part of calibrating the sensor.