Patent application number | Description | Published |
20130283910 | VIBRATING REED, GYRO SENSOR, ELECTRONIC APPARATUS, AND MOBILE UNIT - A vibrating reed includes a base part. A drive vibrating arm, a detection vibrating arm, and an adjustment vibrating arm extend from the base part. A first adjustment electrode and a second adjustment electrode are connected to the adjustment vibrating arm. The first adjustment electrode generates an electrical signal in first phase. The second adjustment electrode generates an electrical signal in second phase opposite to the first phase. The electrical signals of the adjustment electrodes are superimposed on the detection signal of the detection vibrating arm, and thereby, vibration leakage components are cancelled out. The adjustment vibrating arm is partially sandwiched between a first electrode piece and a second electrode piece, and the adjustment vibrating arm is partially sandwiched between a third electrode piece and a fourth electrode piece. | 10-31-2013 |
20140290362 | VIBRATOR ELEMENT AND METHOD OF MANUFACTURING THE SAME - A vibrator element has a first vibration mode in which first and second detection portions perform flexural vibration in opposite directions in the opposite phase to first and second driving portions which vibrate in opposite directions according to a Coriolis force, and a second vibration mode in which the first and second detection portions perform flexural vibration in opposite directions in the same phase as the first and second driving portions which vibrate in opposite directions according to a Coriolis force. A ratio r=R | 10-02-2014 |
20150114114 | ANGULAR VELOCITY SENSOR, ELECTRONIC APPARATUS, AND MOVING OBJECT - An angular velocity sensor includes fixing units, a base portion, beam portions that support the base portion with respect to the fixing units, driving vibrating arms connected to the base portion, and detection vibrating arms connected to the base portion. When a width of a detection frequency band is set to f1 [Hz], a resonance frequency in a rotational vibration mode in which the base portion rotates and vibrates around a detection axis with respect to the fixing units in association with the deformation of the beam portions is set to f2 [Hz], and a detuning frequency is set to f3 [Hz], the relation of f104-30-2015 | |
20150114117 | VIBRATING ELEMENT, VIBRATOR, ELECTRONIC APPARATUS, AND MOVING OBJECT - A vibrating element includes: drive vibrating arm supported to the base portion and extending in a direction of the second axis; and detection vibrating arm supported to the base portion at a position different from the drive vibrating arm and extending in the direction of the second axis. When the vibrating element is subjected to rotation about the second axis while the drive vibrating arm being reciprocally driven in a direction of the first axis, an amount of displacement of the detection vibrating arm in a direction of the third axis at a position distant from the base portion by a distance y1 along the direction of the second axis is greater than an amount of displacement of the drive vibrating arm in the direction of the third axis at a position distant from the base portion by the distance y1 along the direction of the second axis. | 04-30-2015 |
20150116050 | VIBRATING ELEMENT, VIBRATOR, OSCILLATOR, ELECTRONIC APPARATUS, AND MOVING OBJECT - A vibrating element has a drive mode, and first and second detection modes in which the vibrating element vibrates in a direction orthogonal to a vibration direction in the drive mode. In frequency-temperature characteristic curves representing a change in frequency due to a change in temperature in the respective modes with a horizontal axis representing an ambient temperature and a vertical axis representing a change in frequency, when a turnover temperature of the frequency-temperature characteristic curve in the drive mode is Ta [° C.], a turnover temperature of the frequency-temperature characteristic curve in the first detection mode is Tb [° C.], and a turnover temperature of the frequency-temperature characteristic curve in the second detection mode is Tc [° C.], Ta is lower than Tb and Tc, or Ta is higher than Tb and Tc. | 04-30-2015 |
20150268107 | PHYSICAL QUANTITY DETECTING DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT - A physical quantity detecting device includes a vibrating element and a charge amplifier. The vibrating element includes a first detection electrode, a second detection electrode, a third detection electrode, and a fourth detection electrode. The first and fourth detection electrodes have the same electrical polarity, the second and third detection electrodes have the same electrical polarity, and the first and second detection electrodes have opposite electrical polarities. The first and fourth detection electrodes are connected to the charge amplifier, and the second and third detection electrodes are connected to the charge amplifier. | 09-24-2015 |
20150276404 | PHYSICAL QUANTITY DETECTION CIRCUIT, PHYSICAL QUANTITY DETECTING DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT - A physical quantity detection circuit includes a filter circuit, and a synchronous detection circuit that is provided at a downstream of the filter circuit and detects a signal in response to a physical quantity contained in an output signal of a vibrating element based on a drive signal for driving the vibrating element. The filter circuit has a cutoff frequency between a resonance frequency in a drive mode and a resonance frequency in a detection mode of the vibrating element and contains the resonance frequency in the drive mode in a passband. | 10-01-2015 |
20160123736 | VIBRATION ELEMENT, ELECTRONIC DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT - An vibration element includes a drive vibration section and a detection vibration section, and the detection vibration section has a detection mode | 05-05-2016 |
20160126924 | VIBRATING ELEMENT, ELECTRONIC DEVICE, ELECTRONIC APPARATUS, AND MOVING OBJECT - A tuning fork-type vibrator element as a vibrating element includes a drive vibrating arm that performs a flexural vibration, and a drive electrode (a first drive electrode and a second drive electrode) provided on the drive vibrating arm. When a direction in which the drive vibrating arm extends is a Y-axis, a direction in which the drive vibrating arm performs a primary vibration is an X-axis, and a direction orthogonal to the Y-axis and the X-axis is a Z-axis, the drive vibrating arm performs the flexural vibration with a displacement ratio of greater than 0% and 20% or less where the displacement ratio is obtained by dividing a displacement amount in the Z-axis direction by a displacement amount in the X-axis direction. | 05-05-2016 |