Data Harvest Company Logo Data Harvest Company Logo Educational Science & Technology
Open Mon to Thur: 8:30-16:45 & Fri: 8:30-13:30
CONTACT US|Tel: 01525 373666
Educational Science & Technology
CONTACT US|Tel: 01525 373666
Motion Sensor

Motion Sensor

Records change in distance over time, making it ideal for teaching of mechanics / kinematics.

The Motion Sensor is a sonar device that emits ultrasonic pulses, which reflect off an object. It measures the time it takes a high frequency sound pulse to travel from the Sensor to an object and back. This time data is used, together with the speed of sound, to determine the distance of an object from the Sensor.

Interactive Lessons

Make lessons on time, speed, and acceleration fully interactive.

The Motion Sensor has automatic correction for variation in air temperature incorporated into the seven Distance ranges. The Time range measures the time taken for the pulse to travel to an object and back so can be used to measure the speed of sound.

The maximum sample rate is 50 Hz.

The Motion sensor is supplied with a steel rod for clamping into a suitable holding device e.g. a retort stand.

Motion Sensor
Motion Sensor
Practical Teaching

The SmartQ Motion Sensor can be used to investigate a number of scientific experiments such as:

  • Walking toward and away from the Sensor (trying to follow pre-sets created using Predict in the EasySense software). 
  • Graphing time distance curves in real time
  • Movement of an object up or down a slope
  • Demonstrating the derivation of velocity, acceleration from time distance
  • Simple harmonic motion in suspended mass spring systems and pendulums
  • Newton’s laws of motion 
  • Motion of a large pendulum
  • Air track gliders - collisions 
  • Acceleration due to gravity – free fall, pendulum swing, objects dropped or tossed upward 
  • Balanced forces 
  • Conservation of energy - a bouncing object 
  • Speed of sound in air
  • Energy changes in simple harmonic motion 
  • Oscillation of a spring 
  • Demonstration of ultrasound imaging

Harmonic Motion

The Motion sensor can be used with a Force sensor to: Study the relationship between force & motion, collision and impulse, simple harmonic motion, spring characteristics, extension, oscillation, SHM.

Motion Sensor
Warranty & Support

All our sensors are supplied with 5 years warranty and lifetime

Your Purchasing Options

For customers outside of the UK, please contact Data Harvest or an overseas distributor within your country.

Downloads & Resources

All available downloadable product manuals and firmware for the Motion Sensor

Product Manuals

Download Motion Sensor Manual | Version: 6


Ranges 3, Walk, 2 Distances, Time
0.15 to 3 m (Resolution 1 mm)
Distance (mm) 0.15 to 1 m, 0.15 to 2 m, 0.15 to 4 m,
0.15 to 8 m, 0.15 to 800 cm (Resolution 1 mm)
Distance (inch) 6 to 300 inches (Resolution 0.1 inch)
Minimum Distance 0.15 m
Max Sample Rate 50 Hz/20 ms
Steel Mounting Rod Size 80 mm long x 10 mm diameter
with a M6 thread

What's in the box

1x Motion Sensor
1x Steel Mounting Rod

Other Information

Red signal received LED to indicate stable readings. Audible sound each time a pulse is sent.
Data from the Motion sensor is serial and is not suitable for use with Timing functions or Time & Motion mode in the EasySense software or data loggers. These functions only use data from switch-type digital sensors.
Minimum distance between the object and the Motion sensor should be 0.15 m Can be used to calibrate a Clifton Spiromete