2results about How to "Quick rollback" patented technology

The utility model relates to a roller shutter door motor technology field discloses a kind of automatic backoff protection structures of resistance encountered for roller shutter door motor, including motor body, torque monitoring module, execution module and safety alarm module;Motor body is connected with the reel of roller shutter door by transmission mechanism, for driving the lifting of roller shutter door;Torque monitoring module is installed on transmission mechanism, for real-time monitoring the torque change of motor output shaft;Execution module includes controller and backoff driving device, controller is electrically connected with torque sensor, for receiving the torque signal transmitted by torque sensor, and sends control signal to backoff driving device, controls backoff driving device and drives motor reverse rotation, makes roller shutter door backoff certain distance.The device improves the safety and reliability of roller shutter door motor, avoids motor overload damage and possible safety accident.

This invention relates to an automatic software update method based on an in-vehicle embedded operating system, belonging to the field of computer software technology. It solves the problem that existing methods cannot simultaneously achieve reliable system startup and flexible, secure automatic software updates. The method includes: partitioning the physical disk into a system root partition, a user data partition, and an OverlayFS working partition; automatically entering safe mode by detecting kernel boot parameters, mounting the system root partition as read-only, and mounting specified directories as read-write overlays based on the OverlayFS file system and whitelist configuration files; dynamically switching the safe mode on and off via system services and command lines; upon detecting an external update device, entering maintenance mode, performing security verification on the update package from the external update device, and then performing an atomic update operation on the user data partition. This achieves both reliable operating system startup and flexible automatic software updates.