Vibration sensor in a portable vibration meter

摘要

A vibration detector suitable for field use and associated systems and methods are disclosed. A representative apparatus includes a vibration sensor in contact with the vibrating structure. The vibration sensor can be in contact with the vibration isolators to eliminate the frequencies of the operator's hand. In some embodiments, a contact force between the vibration sensor and the vibrating structure can be measured using, for example, contact resistors. Since the sensitivity of the vibration sensor can be a function of the contact force, the vibration amplitude measurements can be adjusted for a known contact force to improve the precision of the vibration amplitude measurement.

主权项

1. A hand held vibration meter, comprising:
a housing; a vibration sensor configured to contact a structure and convert vibrations of the structure to electrical signals, wherein the vibration sensor is contained at least partially within the housing; a vibration isolator in contact with the vibration sensor, wherein the vibration isolator is configured to filter one or more frequencies of vibration, and a force sensor responsive to a contact force applied to the vibration sensor, wherein the vibration meter includes a plurality of sensitivity curves for the vibration sensor, and wherein the vibration meter selects one of the sensitivity curves based on a contact force measured by the force sensor and uses the selected sensitivity curve when determining a vibration measurement.