| 主权项 |
1. An automatic shading device providing shade to the user's eye at all times depending on the angles of incidence of varying sunbeams on the vehicle windscreen, and the eye level of the user even when the vehicle is in motion without requiring the user's intervention, characterised in comprising:
a fastening apparatus enabling the automatic shading device to be fixed onto the vehicle windscreen, a light sensor sequence used for determining the angle at which sunbeams hit the vehicle windscreen, a power unit enabling the batteries of the automatic shading device to be charged and the energy to be transmitted to the circuit elements, a sun shade enabling shade to form at the eye level of the driver, at least two joints enabling the connecting arms to rotate freely, at least two connecting arms providing connections between the sun shade, joints and part fixed onto the vehicle windscreen of the automatic shading device, a first servo motor moving the connecting arm connected to the part fixed to the vehicle windscreen of the automatic shading device, a first angle measurement sensor used for calculating the angle of the connecting arm connected to the part fixed to the vehicle windscreen of the automatic shading device, a second servo motor moving the connecting arm connected to the sun shade, a second angle measurement sensor used for calculating the angle of the connecting arm connected to the sun shade, a calibration button beginning calibration on the position of connecting arms adjusted by the user so as to shade the user's eyes, during first use while the vehicle is not in motion, a microcontroller
calculating the position where the connecting arms should be located according to the data received from the light sensor sequence, and the first and second angle measurement sensors for the user's eye level to be shaded,enabling the first and second servo motors to bring the connecting arms to an appropriate position by moving the joints according to its calculated position data,calculating the eye level and performing later joint movements with this calculated eye level by making calculations according to the signals received from the light sensor sequence, the angle of incidence of the sunbeams and the angle of the joints for the sun shade to be calibrated according to the driver's height, sitting position and seat location, interface circuits transforming the changes in the calibration button, light sensor sequence and first and second angle measurement sensors into electrical forms which the microcontroller can perceive, a motor drive providing the current values required for the first and second servo motors, to operate according to the signals received form the microcontroller, an energy and signal transmission cable enabling power and signal transmission from the microcontroller and the power unit to the second servo motor, and enabling the microcontroller to receive data from the second angle measurement sensor. |
