What is a accelerometer pedometer

Pedometers work by detecting vertical motion and hip movement. Pedometers count a step each time they detect this vertical change in direction. A horizontal arm bounces up and down inside the unit by either a spring? or a hair thin wire (a majority of other pedometers) Their design is highly dependent on the placement on the waistband and keeping the pedometer vertical is vital.

Tilting or wearing at an angle will affect pedometer accuracy drastically,

this is particularly apparent in people with waist measurement greater than 100 cm. (tummy tends to hang over the waistband)

Accelerometer  (Piezoelectric) Pedometers use a piezoelectric strain gauge which bends to accurately record each step taken.

or those more technically minded;
"Piezoelectric is a material that generates an electric charge when it mechanically deforms. Piezoelectric pedometers use a horizontal cantilevered bean with a weight on the end that compresses a piezoelectric crystal when subject to movement like walking (acceleration). This generates a voltage proportional to the acceleration and the voltage oscillations are used to record steps.
A great example of Piezoelectric technology is the Nike + iPod, Nintendo wii controller and your cars Airbags also use Piezoelectric technology"

Why Accelerometers (Piezoelectric) pedometers are a better choice
These pedometers have no moving parts - therefore no clicking sound. It also tests more accurate than spring-levered mechanisms, especially when the pedometer is tilted at an angle, which is often the case with those with larger body shapes/ waist measurements or those walking at slower speeds. The other important benefit of Accelerometers is it’s ability to filter out incidental movement like, crossing your legs or sneezing, by not counting steps until an ‘X’ amount of steps have been taken.

Accelerometers can be worn on the waist, on the wrist, in a pocket or hang from a lanyard around the neck (depending on the model). This sophisticated technology is user-friendly and offers greater motivation and goal setting tools for every walker. They are accurate and reliable. WE love them!

There’s no doubt Accelerometers (Piezoelectric) pedometers will replace the traditional pendulum pedometer in the near future. Yes, they cost between $5 - $10 (Blesson OEM) more and battery replacement is more frequent (every 6 to 8 months), the accuracy and goal setting functions far out weigh the small additional cost. Battery replacement is easy in all our accelerometer pedometers.

 

if need any further information about the accelerometer pedometer, please feel free to contact ken by ken@blesson.com.hk

Tags: accelerometers, piezoelectric , pedometer