Related Experiment Video
Updated: Apr 19, 2026
10:52
Simulation of Human-induced Vibrations Based on the Characterized In-field Pedestrian Behavior
Published on: April 13, 2016
9.3K
Note: Improving the performance of a geophone through suspension system configuration
Dapeng Yang1, Nianru Li1, Changying Liu1
1Key Laboratory of Geo-exploration Instrumentation Ministry of Education, College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130012, China.
The Review of Scientific Instruments
|January 3, 2015
Summary
This study introduces an improved geophone suspension system using multiple leaf springs, enhancing operational broadband and reducing signal distortion for better seismic data acquisition.
Area of Science:
- Seismology
- Mechanical Engineering
- Materials Science
Background:
- Classical geophones utilize a single pair of leaf springs for their suspension system.
- Existing suspension designs can limit operational bandwidth and introduce signal distortion.
Purpose of the Study:
- To develop and evaluate an enhanced suspension system for classical geophones.
- To improve the operational broadband and reduce signal distortion compared to conventional designs.
Main Methods:
- Development of a novel suspension system employing multiple pairs of leaf springs.
- Utilizing finite element analysis (FEA) for performance evaluation and comparison.
Main Results:
- The improved geophone demonstrated a wider operating broadband than the conventional geophone.
- A slight reduction in output signal distortion was observed in the developed system.
- FEA results confirmed superior performance of the new suspension design.
Conclusions:
- The multi-leaf spring suspension system offers significant advantages for geophone performance.
- This enhancement leads to more accurate and reliable seismic measurements.
Related Concept Videos
01:09Torsional Pendulum
8.1K
A torsional pendulum involves the oscillation of a rigid body in which the restoring force is provided by the torsion in the string from which the rigid body is suspended. Ideally, the string should be massless; practically, its mass is much smaller than the rigid body's mass and is neglected.
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played...
As long as the rigid body's angular displacement is small, its oscillation can be modeled as a linear angular oscillation. The amplitude of the oscillation is an angle. The role of mass is played...
8.1K
01:12Measuring Acceleration Due to Gravity
1.5K
Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
A simple pendulum can be described as a point mass and a string. Meanwhile, a physical pendulum is any object whose oscillations are similar to a simple pendulum, but cannot be modeled as a point mass on a string because its mass is distributed over a larger area. The behavior of a physical pendulum can be modeled using the principles of...
1.5K
01:17Magnetic Damping
1.3K
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
1.3K
01:30Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device
492
Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
492
01:24Galvanometer
3.7K
Common devices, including car instrument panels, battery chargers, and inexpensive electrical instruments, measure potential difference (voltage), current, or resistance using a d'Arsonval galvanometer. This electromechanical instrument is also known as a moving coil galvanometer.
The galvanometer consists of two concave-shaped permanent magnets, providing a uniform radial magnetic field in the annular region. In the center, a pivoted coil of fine copper wire is placed in the uniform...
The galvanometer consists of two concave-shaped permanent magnets, providing a uniform radial magnetic field in the annular region. In the center, a pivoted coil of fine copper wire is placed in the uniform...
3.7K
01:10Simple Pendulum
8.7K
A simple pendulum consists of a small diameter ball suspended from a string, which has negligible mass but is strong enough to not stretch. In our daily life, pendulums have many uses, such as in clocks, on a swing set, and on a sinker on a fishing line.
The period of a simple pendulum depends on two factors: its length and the acceleration due to gravity. The period is completely independent of any other factors, such as mass or maximum displacement. For small displacements, a pendulum is...
The period of a simple pendulum depends on two factors: its length and the acceleration due to gravity. The period is completely independent of any other factors, such as mass or maximum displacement. For small displacements, a pendulum is...
8.7K