Acceleration Measurement Using Interia Forces TRIZ Cases
- Topside Boss Pressure Sensor Using DRIE Etching
Deep reactive-ion etching forms a topside boss on the diaphragm, reducing mass and improving alignment with circuit elements.
- Sensor Unit Vibration Isolation via Low Modulus Joining Member
A sensor unit joins an inertial sensor module to an outer case using a ring-shaped joining member with lower elastic modulus.
- Electrostatic Pendular Accelerometer Feedback Control
Capacitance-based feedback control compensates for manufacturing asymmetries and non-linearities to improve acceleration measurement precision.
- MEMS Force Sensor Noise Reduction via Dynamic Mass Segmentation
Segmenting the seismic mass allows high-frequency vibration of a mobile sub-component, shifting measurement away from 1/f noise regions to improve resolution.
- MEMS Accelerometer Temperature Compensation via Segmented Capacitive Sensing
Segmented capacitive sensing isolates acceleration signals, removing spurious components caused by temperature drift and aging effects.
- Audio Device Freefall Protection with Spring Arm and Buoyancy
A wireless audio device extends a spring-loaded arm during freefall to control impact orientation.
- Inertial Sensor Range Setting via Cross-Axis Prediction
Cross-axis prediction allows the range setting unit to pre-adjust detection ranges, resolving tracking delays and improving accuracy during rapid motion.
- Electrode Finger Collision Prevention in Acceleration Sensors
Physical quantity sensor with symmetrical electrode fingers and stopper structure.
- Virtual Indoor Space Content Generation via Relative Location Mapping
Server maps omnidirectional images to relative location data, resolving the absence of GPS signals for accurate indoor positioning.
- MEMS Resonant Accelerometer Thermal Expansion Compensation
A double-ended tuning fork structure in MEMS accelerometers cancels thermal expansion errors to improve acceleration measurement accuracy.
- Hubodometer Orbiting Detection and Cancellation
A hubodometer uses orbiting sensors to detect pendulous assembly rotation and electric actuators to apply countervailing force.
- Asymmetric Tilt-Mode MEMS Accelerometer Offset Cancellation
Segmenting the sensing function into two asymmetric masses cancels common-mode substrate stress errors and reduces Brownian noise for higher precision.
- Physical Quantity Detection Element Mass Distribution
Optimized mass distribution enhances sensitivity and impact resistance in physical quantity detection elements by increasing torque and rigidity.
- Mechanical Low Pass Filter for Motion Sensor Vibration Isolation
A mechanical suspension system with compliant dampers and metal springs isolates motion sensors from package strain.
- Speed Pick-Up Ring Convex Base Notch Design
Convex base walls on a speed pick-up ring maintain consistent air gaps, eliminating voltage fluctuations caused by noise in variable reluctance sensors.
- Self-Powered Piston Acceleration Diagnostic System
Electromagnetic induction powers an accelerometer to measure piston acceleration, providing real-time maintenance data without external batteries.
- Inertial Measurement Unit Temperature Drift Calibration via GPS Reference
A calibration method uses global positioning system data to determine real-time temperature drift values for inertial measurement units.
- Single Proof Mass MEMS Accelerometer Cross-Axis Error Reduction
A single proof mass MEMS accelerometer design uses mirrored comb capacitors to measure orthogonal acceleration axes.
- MEMS Accelerometer Torsional Oscillator Linearization
Variable moment inertia modulation linearizes the response of a torsional oscillator MEMS accelerometer, reducing noise and scale factor errors.
- Atom Chip Accelerometer Bias Correction via Dual-Sensor Inversion
Parallel dual-sensor trajectories with opposite phase signs eliminate additive measurement bias, improving inertial navigation accuracy and reliability.
- Pulse Meter Adaptive Filter Body Motion Removal
Adaptive filter subtracts body motion artifacts from pulse wave signals using triaxial acceleration data.
- Geomagnetic Sensor Calibration via Motion-Adaptive Sampling
A low-power processor detects motion patterns to adjust geomagnetic sensor sample rates for calibration.