Magnet Sensors in Treadmills

Magnet Sensors find a few applications in treadmills for speed and gradient sensing. The speed of the belt is determined by positioning a reed sensor near the pulley driving the belt, and a multi-pole ring magnet either on the on the pulley itself. As the system is speeded up, the Reed Sensors gives feedback to the system controls to speed up the motor until the number of pulses meant for that speed setting is reached. The Sensor also maintains the speed of the belt over long durations. This would mean that the belt tensions should be monitored and kept adjusted so that belt slippage does not lead to wrong speed and distance indications.

Apart from speed sensing, the gradient of the treadmill is adjusted by raising the front wheels. Locating reed sensors in a few strategic positions on the arms of the front wheels can also give information to the controller about the angle of the gradient. The continuous information collected by the multiple sensors is then used to save health information to an App on a mobile device or a website.
 

Application Classification

Applications are classified as Position Sensing, Pulse Counting, Electromagnetic or Relay, Temperature Sensing or Magnet Biasing types. This application is classified as follows and the link gives more information on best practices to help select the most suitable AT band and matching magnet.

Pulse Counting Type

Pulse counting type application When an application requires the volume of a fluid, or a distance, or the RPM of a machine tool Continue reading -> Nov 7, 2020

Recommended Products

The Reed Switches and Sensors used in such applications need to be robust, durable and efficient in meeting a high life expectancy. Our engineers work hard in life testing our products under various conditions, and our intention is to ensure end product durability and life. Although we wouldn’t want to restrict any of our products for use in only certain applications, the recommended products for use in this application are listed below.

R2 Standard size SMD Reed Sensor

R2-S Gull-wing SMD Formed Reed SensorR2-S Gull-wing SMD Formed Reed Sensor Pad LayoutR2-F Low Profile SMD Formed Reed SensorR2-F Low Continue reading -> Dec 2, 2020

MS-228, M8 Threaded Cylindrical Sensor

MS-228 M8 Threaded Sensor Drawing starFeatures30W Contact Rating. Normally Open contact. Three sensitivity bands. Sputtered Ruthenium Continue reading -> Nov 20, 2020