#accelerometers

• track movement visually

• perceive multiple wavelengths of light around 500-900nm

• perceive rotation and translatory acceleration

• produce simple and complex language

• bite and gnaw

• move paws for locomotion and play

Felix Vening Meinesz – Scientist of the Day

Felix Vening Meinesz, a Dutch geophysicist, was born July 30, 1887.  

In the world of precision measurement and motion analysis, accelerometer transducers play a pivotal role. These remarkable devices provide valuable insights into how objects move and respond to various forces. Let's delve into the fascinating world of these meters, exploring how they work and the diverse fields in which they find application.

How Accelerometers Work: Accelerometers are sensors designed to measure acceleration, which is the rate of change in velocity of an object. Inside an accelerometer, tiny masses are suspended on springs. When acceleration occurs, these masses move relative to the sensor's frame, causing deflection. This deflection is then converted into an electrical signal, typically voltage, and proportional to the acceleration. Thus, accelerometers provide precise data about an object's movement in three-dimensional space.

Where They Are Used: Automotive Industry: these are integral to airbag deployment systems, ensuring they inflate at the right moment during a collision. They also assist in vehicle stability control and anti-lock braking systems. Consumer Electronics: Smartphones and tablets use accelerometers for screen orientation and gesture recognition. Gaming consoles also employ them for motion-controlled gaming experiences.

Aerospace: In aviation, this help monitor aircraft performance, providing data for navigation, flight control, and structural health monitoring. Industrial Machinery: these are essential in monitoring the vibrations of heavy machinery. They help predict maintenance needs, ensuring safe and efficient operations.

Medical Devices: They are used in wearable health technology for monitoring activities, falls, and impacts, aiding in patient care and assessment. Sports and Fitness: these are integrated into fitness trackers to monitor physical activities, such as step count and calorie burn. Geology and Seismology: In the scientific realm, accelerometers are employed in seismometers to detect ground motion during earthquakes and other seismic activities. Robotics: Robots use accelerometers for balance control, obstacle avoidance, and precise movement.

Types of accelerometers and their applications

When it comes to vibration measurement, two common sensors are used: accelerometers and velocity sensors. These sensors measure different aspects of vibration, and it is important to understand the differences between them to choose the right sensor for your needs. In this blog post, we will explain the differences between accelerometers and velocity sensors and when to use each sensor.

Accelerometers measure acceleration, which is the rate of change of velocity. These sensors measure the amount and direction of vibration and are typically used to measure high-frequency vibrations. They have a broad frequency range and can measure both high and low-frequency vibrations. They are also useful in measuring shock and impact events.

Velocity sensors, on the other hand, measure the velocity of the vibration. These sensors are used to measure low-frequency vibrations and are more sensitive to low-frequency signals. They have a limited frequency range and are not suitable for measuring high-frequency vibrations. They are useful in measuring vibrations in large structures, such as buildings and bridges.

When choosing between accelerometers and velocity sensors, it is important to consider the frequency range of the vibration. If the vibration has a high frequency, an accelerometer is the better choice. If the vibration has a low frequency, a velocity sensor is more appropriate. Additionally, the type of structure being measured can also influence the choice of sensor.