Class / Patent application number | Description | Number of patent applications / Date published |
073652000 | With inertia element | 14 |
20090188323 | Monitoring system for machine vibration - A system for monitoring an exposure of a machine operator to machine vibration is provided. The system includes an operator safety restraint. The system also includes at least one vibration sensor on the safety restraint and configured to generate a signal indicative of operator exposure to machine vibration. The system further includes a controller configured to receive the signal and configured to determine an amount of vibration exposure of the machine operator based on the signal. | 07-30-2009 |
20140311247 | MULTI-AXIS MEMS RATE SENSOR DEVICE - A MEMS rate sensor device. In an embodiment, the sensor device includes a MEMS rate sensor configured overlying a CMOS substrate. The MEMS rate sensor can include a driver set, with four driver elements, and a sensor set, with six sensing elements, configured for 3-axis rotational sensing. This sensor architecture allows low damping in driving masses and high damping in sensing masses, which is ideal for a MEMS rate sensor design. Low driver damping is beneficial to MEMS rate power consumption and performance, with low driving electrical potential to achieve high oscillation amplitude. | 10-23-2014 |
20150128711 | WOBBLE DETECTION VIA SOFTWARE DEFINED PHASE-LOCK LOOPS - The embodiments relate to the use of one or more phase lock loops (PLL's) for detecting wobble of a surface upon which a computing device is set. The PLL's can be configured to lock onto an exponentially-damped sinusoid output from an accelerometer in order to differentiate between surface-induced movement and direct human-induced movement of the computing device. Reduced latency in wobble detection can be achieved by implementing the PLL in software and using multiple PLL's per accelerometer axis. Further reduction in the latency of wobble detection can be achieved by seeding the phase of an oscillator signal generated by each PLL in order to improve phase estimates when attempting to lock a PLL onto the accelerometer output. | 05-14-2015 |
20150331009 | VIBRATION SENSOR - A vibration sensor includes a mass block supported with the aid of at least one spring in a manner allowing movement relative to a frame in a measuring direction, a displacement of the mass block in the measuring direction relative to the frame being detectable by a position-measuring device. The position-measuring device includes a measuring standard and a scanning head aligned with the measuring standard. One of these two components is secured on the mass block, and the other is secured on the frame. | 11-19-2015 |
073653000 | With light beam indicator | 2 |
20080289429 | FIBER OPTIC MEMS SEISMIC SENSOR WITH MASS SUPPORTED BY HINGED BEAMS - The present invention relates to an optic seismic MEMS sensor. More specifically, a proof mass is supported by a frame having supporting beams. The proof mass is positioned within the frame and has a hinged attachment to the beams. The proof mass has a sensor gap having a first reflector and a second reflector positioned at opposing ends of the sensor gap. An optical fiber injects light into the sensor gap and light is reflected to determine seismic movement of the proof mass with respect to the frame. Stops are provided for limiting the movement of the proof mass to minimize strain on the attachment of the beams and the proof mass. | 11-27-2008 |
20120247213 | OPTICAL SEISMOMETER - Methods, structures, devices and systems are disclosed for implementing optical seismometers that detect seismic information based on optical interferometry. In one aspect, a device includes a first retroreflector attached to a mass of a seismometer, a second retroreflector attached to a member of a frame of the seismometer, the frame structured to suspend the mass, and optical components attached to the member of the frame and configured with the first and second retroreflectors to form an interferometer, in which a change in position of the mass is identified by detecting by a change in an optical path of a light beam generated by a light energy source transmitted to the interferometer. | 10-04-2012 |
073654000 | With electrically controlled indicator | 8 |
20090044628 | Vibration Sensor Array - It relates to a vibration sensor arrangement ( | 02-19-2009 |
20090199644 | VIBRATION ACTUATOR - [Object] A vibration actuator having a simple small-sized structure capable of obtaining vibration enough to sense without use of suspension or the like is provided. | 08-13-2009 |
20100043560 | REFLECTIVE AND SLANTED ARRAY CHANNELIZED SENSOR ARRAYS - Reflective and slanted array channelized sensor arrays having a broadband source providing acoustic energy to a reflective or slanted array that reflects a portion of the incident signal to one or more sensing films wherein the response is measured. | 02-25-2010 |
20100212432 | ELECTROSTATIC CAPACITIVE VIBRATING SENSOR - An electrostatic capacitive vibration sensor has a substrate, a through-hole, a vibrating electrode plate, and a fixed electrode plate opposite the vibrating electrode plate. The fixed electrode plate is subjected to vibration to perform membrane oscillation. Pluralities of acoustic holes are made in the fixed electrode plate. The vibrating and fixed electrode plate are disposed on a surface side of the substrate such that an opening on the surface side of the through-hole is covered. A lower surface of an outer peripheral portion of the vibrating electrode plate is partially fixed to the substrate. A vent hole that communicates a surface side and a rear surface side of the vibrating electrode plate is made between the surface of the substrate and the lower surface of the vibrating electrode plate. In addition, the acoustic hole has a smaller opening area except at the outer peripheral portion. | 08-26-2010 |
20100326197 | SERVO-TYPE VIBRATION DETECTOR - A movable plate is provided to a pendulum displaceable by external vibration. A fixed plate is provided to a position opposite to the movable plate. A displacement detector detects an electrostatic capacitance between the plates. A servo amplifier supplies to a force coil, a current in an amount associated with the detection result. A current circuit and a load resistor of the force coil convert the current into a detection signal and output the signal. When the movable plate and the fixed plates, which are conducted to each other, are contacted, the electrostatic capacitance between the plates is removed. A processor detects a change in the detection signal due to the removal of the electrostatic capacitance, and then determines that the plates are contacted. | 12-30-2010 |
20110041614 | Circuit for a micromechanical structure-borne sound sensor and method for operating a micromechanical structure-borne sound sensor - A circuit for a micromechanical structure-borne sound sensor and a method for operating this sensor, a voltage generator being used to apply voltages to at least one micromechanical element for recording the structure-borne sound, so that a change in the micromechanical element occurs. In addition, an evaluation circuit is provided, which records the at least one electrically recordable parameter of micromechanical element at a sampling rate and analyzes the same. This at least one parameter changes in response to the change. A clock-pulse generator is also provided for generating the sampling rate and for generating the clock pulse. A frequency generator is used for generating the clock pulse at least intermittently for the test operation, the frequency generator producing the clock pulse as a multiple or as a submultiple of the sampling rate. | 02-24-2011 |
20110126630 | VIBRATION SENSOR AND A SYSTEM TO ISOLATE VIBRATIONS - A vibration sensor comprises a reference mass, a resilient element supporting the reference mass, and a base supporting the resilient element, and further comprises a displacement sensor for determining the distance between the reference mass and the base. In accordance with the invention the vibration sensor comprises an actuator that is situated between the resilient element and the base, a second displacement sensor, and a controller for providing an output signal to the actuator. | 06-02-2011 |
20140096611 | SENSOR ARRANGEMENT AND METHOD FOR PRODUCING A SENSOR ARRANGEMENT - A sensor arrangement ( | 04-10-2014 |