1 results about "Hygrometer" patented technology

The invention discloses an overspeed warning device for a bicycle in rainy days, which comprises a speed sensor, a hygrometer, an overspeed warner, a central control board and a battery, wherein the speed sensor, the hygrometer and the overspeed warner are all connected with the central control board; the battery provides a working power supply for the whole device; the speed sensor and the hygrometer are arranged on a wheel rotation shaft of the bicycle and used for testing the speed of the bicycle and the humidity of the environment; the speed and humidity signals are transferred into the central control board; the central control board compares the speed and the humidity signals with preset speed and humidity values; and if the speed and humidity signals exceed the preset values, the central control board controls the overspeed warner to send an overspeed signal. The invention can warn the bicycle with an overhigh traveling speed according to the humidity condition of the road surface so as to reduce the occurrence probability of the bicycle traffic accidents and guarantee the life property safety of the cyclist.