Patent ID: 11897167
Assignee: OSHKOSH CORPORATION
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 18:
19. A method for determining a slump of a material within a concrete mixer drum, the method comprising:
providing a first accelerometer and a second accelerometer on a probe that extends into the concrete mixer drum, wherein the first accelerometer is disposed outside of the concrete mixer drum and is configured to produce baseline acceleration signals as the concrete mixer drum rotates, and the second accelerometer is disposed within the concrete mixer drum on the probe and is configured to produce disturbed acceleration signals as the concrete mixer drum rotates and the probe passes through the material;
determining an indication of an amount of noise in the disturbed acceleration signals based on a comparison of the baseline acceleration signals and the disturbed acceleration signals; and
using the amount of noise in the disturbed acceleration signals to estimate the slump of the material within the concrete mixer drum.