Extension sensing device for intelligent car clothing

The utility model discloses an extension sensing device for intelligent car clothing, and aims to realize an automatic extension operation of the car clothing. The extension sensing device is characterized in that a partition is also mounted on a base; the extension sensing device is mounted at the position of the partition, is a Hall sensing device, and comprises a Hall element, a sensing circuit and a permanent magnet; the Hall element is mounted on the partition; the permanent magnet is mounted on at tail end of the car clothing; the automatic extension of the car clothing can be realized. During the extension of the car clothing, if the permanent magnet at the tail end of the car clothing is pulled out to sense the Hall element, the extension sensing device feeds back information to a control circuit so as to control a bidirectional motor to stop; if the permanent magnet is not pulled out, the extension sensing device does not respond.