| 摘要 |
The present invention relates to a speed sensor which uses an atmospheric pressure which detects a speed according to atmospheric pressure changes by using Bernoulli′s equation. The present invention measures an atmospheric pressure change according to speed changes of sport equipment by being installed in the sport equipment to measure a speed and outputs the measured change to the outside by converting the measured change into a speed by including: a substrate part on which an electronic circuit is printed; a barometer which is installed in the front side of the substrate part, measures an atmospheric change, and provides the atmospheric change as an electrical signal; a control part which receives an atmospheric pressure signal by being electrically connected with the barometer and outputs an electrical signal by converting the atmospheric pressure signal into a speed from a built-in pressure/speed converting table; a digital display window which is mounted in the rear surface of the substrate part and displays a speed-related electrical signal which is provided from the control part to the outside as a number; a power supply part which is installed in the substrate part and includes an electric condenser which supplies power to the control part; and a power switch which is installed in the rear surface of the substrate part and enables a user to selectively operate a sensor by turning on/off the power supply of the power supply part. According to the present invention, not only user convenience but also improved excellent effects are obtained to contribute to the improvement of sports ability by immediately measuring the speed of sport equipment in case of a swing of the sport equipment by being installed in the sport equipment including a badminton racket, a golf club, or a baseball bat. |
