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JP2009025012A |
To provide an acceleration sensor offset correction apparatus and method which can correct an offset value of an acceleration sensor with high precision in accordance with the ambient temperature of the acceleration sensor.Standard tempe...
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JP2009025214A |
To provide a testing method capable of testing a plurality of gyros on a testing board composed of PCB with an equivalent characteristic to testing a single gyro.The testing method includes: a step of placing a plurality of gyros on the ...
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JP4219200B2 |
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JP4212131B2 |
An acceleration signal is generated in a motor vehicle having acceleration and deceleration states. The signal generated is used in a vehicle control system. A first value, representing vehicle acceleration, is initially determined as a ...
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JP2009006836A |
To estimate a travel direction acceleration with higher accuracy.An automobile 1A detects front and rear directional acceleration acting on the vehicle by a front and rear directional acceleration sensor 4 inclined in a front and rear di...
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JP2009008412A |
To improve failure detection accuracy of a physical quantity sensor.A sum-of-squares calculation part 5 calculates a square root value of the sum of squares of acceleration values Gx, Gy, Gz outputted from AD converters 4a, 4b, 4c as a s...
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JP4206975B2 |
A transducer (10) including a pair of oscillating reeds (1a, 1b) extending in the Y-direction for generating a first oscillation for generating a Coriolis force corresponding to the rotation of the transducer (10), a beam (2) extending i...
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JP4207154B2 |
A physical quantity (e.g., acceleration) sensing unit is provided. In this unit, a capacitive sensor has first and second fixed electrodes and a physical-quantity-sensitive movable electrode disposed between the first and second fixed el...
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JP4205243B2 |
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JP4206357B2 |
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JP2008304262A |
To provide a temperature compensation circuit having a good linearity, a trimming circuit equipped with a plurality of temperature gradients, and an acceleration detecting apparatus capable of widening an available temperature range.Resi...
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JP4194233B2 |
A sheath liquid supplying apparatus includes a syringe including a piston and a cylinder slidably accommodating the piston and a stepping motor for causing the piston to slide in the cylinder, wherein the cylinder has an injection/suctio...
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JP4194724B2 |
A vehicle driving condition detection device is adapted to detect a vehicle running along a banked or laterally sloping road, as well as a lateral acceleration, and sideslip angle with good accuracy. The sideslip angle is estimated at a ...
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JP2008542787A |
The invention relates to a method and a system to demonstrate discrepancies in the speedometer of a vehicle. In a preferred embodiment, the method and the system further comprise the possibility of adjusting or calibrating the speedomete...
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JP3146414U |
To provide an eco-driving support device which is low in cost and extremely easy to introduce, and improves fuel efficiency of a vehicle by preventing a driver of the vehicle from suddenly accelerating. A base 4 installed near a driver's...
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JP4178658B2 |
A capacitive physical-quantity detection apparatus includes a movable electrode (2d) which is displaced in response to a physical quantity. A fixed electrode (3, 4) opposed to the movable electrode forms a capacitor in conjunction with t...
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JP4174351B2 |
To sense a direction in which a physical quantity acts perpendicular to a substrate although apparatuses are manufactured by a simple manufacturing process. A movable electrode 148a can be displaced in a z-axis direction (a direction per...
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JP2008256582A |
To provide a physical quantity sensor capable of checking, by own-self, a failure and deterioration of a characteristic in a system including a plurality of detecting elements, with simple constitution.The physical quantity sensor includ...
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JP4169174B2 |
To improve the accuracy in detection of failure such as the fixing of an output value by judging the abnormality of a sensor when a second estimating means estimates the abnormality on the basis of a sensor output value in a period longe...
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JP2008247145A |
To provide an occupant restraint-motion control device system which can control an occupant restraint device (an airbag device, and an SRS pretensioner device, or the like) and a motion control device (a VSA device) with a simpler consti...
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JP2008241490A |
To provide a correction device for a sensor capable of correcting properly a temperature drift by simple constitution, and capable of reducing a manufacturing cost.This projector 1 of the present invention is provided with an acceleratio...
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JP2008241393A |
To measure accurately an acceleration value without requiring much labor.A triaxial acceleration sensor chip 1 is arranged under an environment having some temperature between +85C, +25C and -40C. An offset value and a sensitive value un...
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JP2008216118A |
To make an execution enough with simple constitution, while allowing self-diagnosis about sticking to be executed.A control circuit executes sensitivity diagnosis for determining the quality of sensor sensitivity by impressing the second...
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JPWO2006106876A1 |
For microstructures with moving parts that perform highly accurate inspections without damaging the probe or inspection electrode and by suppressing the effect of stylus pressure on the contact between the probe and the inspection electr...
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JP2008209163A |
To provide a sensor apparatus capable of suppressing the effect of disturbances such as electric noise and temperature and achieving high accuracy.A circuit part Dc for processing output signals of a sensor chip 1 is formed on the side o...
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JP4143436B2 |
A pick-up (15) detects the variations in magnetic flux of the magnets (11) arranged at the periphery of a magnetic rotor (10), corresponding to the rotation of the rotor. An abnormality determination unit (17) determines abnormal conditi...
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JP2008196964A |
To correct an offset voltage more accurately.It is determined whether a vehicle is in a stopped state or not based on a vehicle speed signal input from a vehicle speed sensor (S100). When determined that the vehicle is in the stopped sta...
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JP4139436B2 |
PCT No. PCT/FR96/00904 Sec. 371 Date Feb. 13, 1997 Sec. 102(e) Date Feb. 13, 1997 PCT Filed Jun. 13, 1996 PCT Pub. No. WO97/00451 PCT Pub. Date Jan. 3, 1997An accelerometer includes a seismic mass which is subjected to a force when accel...
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JP4133425B2 |
A positioning ring (37) and a level board (40) perform press clamping of a seal ring (19) with respect to the tone wheel (21). A rotatable chuck (36) fixedly holds the seal ring in a state in which the tone wheel is forcedly made to foll...
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JP4127062B2 |
A steering torque sensor detects steering torque in a motor vehicle. A lateral acceleration sensor detects lateral acceleration of the motor vehicle. Amount of drift of the lateral acceleration sensor is estimated based on the detected s...
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JP4126785B2 |
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JP4128864B2 |
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JP2008170294A |
To provide a small angular velocity sensor, in which even if a resolution of correction data is raised, the capacity of a memory means will not increase, and then the sizes of the angular velocity sensor and a vehicle control device that...
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JP4122221B2 |
The present invention describes an active magnetic sensor, in particular for detecting the rotational behavior of a wheel, comprising a magneto-electric transducer (2) that is electrically connected to a modulator (5), a current source s...
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JP2008145440A |
To provide a possibility for reducing the influence of drifting surface charges on the output signal of a micromechanical inertial sensor, in particular a Z sensor, by improving a micromechanical inertial sensor including a seismic mass ...
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JP2008145152A |
To provide an acceleration detecting device and a method for correcting drift error of an acceleration sensor, capable of eliminating the influence of congested state on a slope and a road, and achieving more accurate zero-point correcti...
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JP4106582B2 |
To inexpensively and accurately adjust the drift of a laser radar 1 and a yaw rate sensor 21 in a vehicle detector equipped with the laser radar 1, and the yaw rate sensor 21 and a car speed sensor 3. The vehicle detector is provided wit...
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JP2008139136A |
To provide a method of manufacturing a mechanics quantity sensor capable of adjusting electric outputs without adding a resistor for trimming.The method of manufacturing a mechanics quantity sensor which is composed of: a fixed part 1; a...
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JP4101490B2 |
Inertial rate sensor and method in which a drive signal consisting initially of a square wave and thereafter a sine wave is applied to a vibratory rate sensing element, a pickup circuit is coupled to the rate sensing element for providin...
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JP4103280B2 |
A sensor device includes a sensor circuit for measuring a physical amount such as pressure, a voltage detector for detecting a voltage actually supplied to the sensor circuit, and an oscillator for generating an oscillating signal when t...
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JP2008122380A |
To compensate a vibration straightening error, by removing a bias according to a regulation command from an output stage.An MEMS gyroscope 15 mounted on a mount 10 detects a rotational acceleration around a rotary axis a defining a Corio...
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JP2008116475A |
To correct a scale factor according to minute differences in the characteristics of individual tuning fork devices.In the inertial velocity sensor and method, a reference signal having both a fixed component and a variable component is a...
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JP2008116237A |
To provide a sensor device capable of diagnosing the offset of output of an angular velocity sensor without inputting the vehicle speed signal externally.While a first acceleration sensor 20 is arranged while tilting by a certain angle t...
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JP2008116339A |
To provide a sensor device capable of diagnosing detected physical quantity inside.A yaw rate value detected by a yaw rate sensor 11 is output as an analog signal and digital signal via different paths, respectively. Of these signals, th...
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JP2008101980A |
To enhance the connection strength of a sensor chip to a circuit chip where the sensor chip is flip-chip-connected to the circuit chip via bumps.The sensor chip 12 is kept facedown with respect to the circuit chip 13 and connected theret...
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JP4081976B2 |
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JP4082751B2 |
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JP1998504401T5 |
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JP2008510159A |
The present invention provides a method and apparatus for calibrating the rotational relationship between a first motion sensor and a second motion sensor in a sensor system, the method comprises the steps of: determining a minimal numbe...
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JP2008070224A |
To provide an on-vehicle angular velocity sensor capable of diagnosing a detected angular velocity value, and correcting offset, without using a means such as a wheel speed sensor for determining stop of a vehicle.A detection signal corr...
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