An electric sunshade and its control method

Abstract

The invention discloses an electric sunshade curtain. The electric sunshade comprises a curtain fabric, a coiling pipe and a motor module, wherein the coiling pipe is connected with the side edge of one end of the curtain fabric and used for coiling the curtain fabric; the motor module is arranged outside the coiling pipe and can drive the coiled pipe to rotate; an upper limit sensing device and a lower limit sensing device are respectively arranged on the side surface of the upper end and the side surface of the lower end of the curtain fabric. The electric sunshade curtain further comprises a control module and a detecting module; when the detecting module detects the upper limit sensing device or the lower limit sensing device, the motor module is stopped rotating by the control module. According to the electric sunshade curtain, the sensing device is arranged on the curtain fabric, the detecting device detects the sensing device to enable the motor to be stopped, and thus the curtain fabric can be accurately positioned to a lower limit position or an upper limit position. The invention also discloses a control method of the electric sunshade curtain.

Description

technical field [0001] The invention relates to the technical field of curtains, in particular to an electric sunshade and a control method thereof. Background technique [0002] Curtains are relatively common household items, and are generally placed on doors and windows to shield sunlight, ensure privacy, or decorate. Existing electric sunshade adopts the motor to drive the roll tube to move up and down to achieve the effect of controlling the rise or fall of the sunshade curtain. However, in the existing electric sunshade, in order to determine whether the curtain has reached the upper limit or the lower limit, a sensor is usually provided on the output shaft of the motor to detect the number of rotations of the output shaft of the motor to calculate the rising or falling distance of the curtain. Due to the different forces on the curtains in different environments, the diameters of the roll tubes are different when the curtains are rolled up, so there is a very large er...

AI Technical Summary

Problems solved by technology

Due to the different forces on the curtains in different environments, the diameters of the roll tubes are different when the curtains are rolled up, so there is a very large error in calculating the upper and lower limits of the curtains based on the number of turns of the roll tube. When the curtains are side by side, such an error will cause the curtains to be uneven, which will greatly affect the appearance

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