The cadence sensor connected via a wire along the chainstay to the wheel sensor
To measure a precise speed, distance, acceleration and cadence we have invented, designed and manufactured this VeloComputerTM wireless sensor. Thesensor attaches to a chainstay on a rear wheel of a bicycle and wirelessly transmits precise motion data to the VeloComputerTM application on a phone. The application instantly calculates and displays spot speed, acceleration, time, distance, cadence and power.
Unlike traditional cycling computer sensors, which measure a full 360° (degree) wheel rotation, our innovative technology is capable of detecting as little as 1° (degree) of wheel rotation. This unique sensing technology is at least 360 times more accurate than traditional sensors. It measures a spot speed and acceleration with less than 1 second delay comparing up to 7 seconds in traditional cycling computers.
This innovative patent-pending technology measures magnetic field from a magnet attached to a wheel. When the wheel rotates, the magnetic field M projected onto the sensor's center line C, changes angle . The angle is detected by a magnetic field sensor. It works like a compass where magnetic field M is like a compass arrow, always pointing to the magnet on a spoke. As little as one degree is enough to detect a wheel motion. Knowing the diameter of the wheel the sensor calculates linear distance, speed and acceleration (change of speed per second) and wirelessly transmits it to a mobile device.
Sensor Features
•1° (degree) precision. Capable of detecting 1° (degree) of wheel rotation. Accurately measures distance, spot speed, acceleration and cadence.
• At least 360 times more accurate than a traditional cycling computer;
• 1 second latency. Up to 7 times more responsive than a traditional cycling computer;
• Simple attachment – on the left chainstay with zip tie or Velcro® strap;
• Battery capacity - 8-10 hours;
• Rechargeable via Micro-USB
• Weather-proof – rigid plastic enclosure is sealed with rubber ring from rain and dust;
Dimensions: L52mm ( 2 1/16") x W20mm (3/4") x H12mm (1/2")
Weight: ~25g (1oz)
