| 摘要 |
A WIFI-based photosensitive controlled road sign device comprises an LED lamp, a power supply, a photosensitive sensor, a controller and a timer; the photosensitive sensor is connected with the controller through a WIFI signal, the power supply is connected with the controller, the controller is also connected with the timer, and the timer is connected with the LED lamp; the photosensitive sensor is mounted on the road surface approximate 30-100 meters in front of a sign; the LED lamp is mounted on the surface of the sign; the controller and the timer are mounted inside the sign and controlled by a single chip microcomputer. With the sign changing from a low brightness to a high brightness, drivers pay abundant attention to the sign, and the LED lamp is kept on for a certain period of time, so that the drivers can see the content on the sign clearly and the indicating function can be effectively realized. |
