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Editor's Note: Continuing our celebration of Sensors' 25th birthday, we're including another gem from our archives.
Sensor Design & Technology
Choosing an Ultrasonic Sensor for Proximity or Distance Measurement Part 1: Acoustic Considerations
By: Donald P. Massa, Massa Products Corp.
The first step toward identifying the right proximity sensor for your application is to understand the fundamental ultrasonic properties of the transmission medium and the way they influence the measurement and system operation. more >>
Choosing an Ultrasonic Sensor for Proximity or Distance Measurement Part 2: Optimizing Sensor Selection
By: Donald P. Massa, Massa Products Corp.
An understanding of radiation patterns and the target's effect on echoes is essential to evaluating candidate sensors in terms of frequency variations, accuracy and resolution, target range, effective beam angle, and the influence of ambient temperature variations on sensor performance. more >>
sensors at work
Improving Indoor Weather with Carbon Dioxide Sensors
By: Scott Lindblom, Texas Instruments, Sensors & Controls Division
Modern HVAC systems do far more than just blow warm or cool air around. more >>
intelligent systems
Designing a Second-Order Anti-aliasing Filter for a Sensor Signal Path
By: Beb Hennink, National Semiconductor Corp.
Aliasing in sensor signal paths can be avoided by using an anti-aliasing filter between the sensor and the ADC. This article describes how to design a simple, second-order anti-aliasing filter. more >>
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