Abstract: An intelligent door control system and method is provided. The intelligent door control method includes the following steps: receiving an ambient temperature inside and outside a door body of the intelligent door through a first sensor and a second sensor which are respectively installed inside and outside the door body of the intelligent door; comparing the ambient temperature inside the door with a preset first temperature threshold, and comparing the ambient temperature outside the door with a preset second temperature threshold; automatically controlling the intelligent door according to whether there is a living body inside the intelligent door, and comparison results of the ambient temperatures inside and outside the door body with the first and second temperature thresholds respectively.

Abstract: An anti-collision system and an anti-collision method are disclosed. The anti-collision system includes a first circuit and a magnetic device arranged on the door body and the door frame respectively, the first circuit includes a first power source, a first coil, and a first switch circuit connecting the first power source and the first coil; when a speed sensor detects that the rotation speed of the door body is too high, a control terminal controls the first switch circuit to switch on, such that the first coil is connected to the first power source to generate a first magnetic field, which causes a repulsive force to reduce the rotation speed of the door; when the rotation speed of the door body is reduced to a preset value, the control terminal controls the first switch circuit to switch off, the repulsive force disappears, and the door body is closed smoothly.

Abstract: An anti-collision system and an anti-collision method are disclosed. The anti-collision system includes a first circuit and a magnetic device arranged on the door body and the door frame respectively, the first circuit includes a first power source, a first coil, and a first switch circuit connecting the first power source and the first coil; when a speed sensor detects that the rotation speed of the door body is too high, a control terminal controls the first switch circuit to switch on, such that the first coil is connected to the first power source to generate a first magnetic field, which causes a repulsive force to reduce the rotation speed of the door; when the rotation speed of the door body is reduced to a preset value, the control terminal controls the first switch circuit to switch off, the repulsive force disappears, and the door body is closed smoothly.

Abstract: A monitoring device is disclosed, including: a base; a first rotary mechanism which is connected to the base and rotatable relative to the base; a supporting bracket fixed to the first rotary mechanism; a second rotary mechanism which is connected to the supporting bracket and rotatable relative to the supporting bracket; a lens assembly fixed to the second rotary mechanism; and a housing fixed to the supporting bracket and having an opening to expose the lens assembly; the first rotary mechanism, the supporting bracket, and the second rotary mechanism are located in the housing, a rotation axis of the first rotary mechanism is perpendicular to the base and a rotation axis of the second rotary mechanism. The monitoring device can implement omnidirectional imaging while maintaining an overall appearance of the entire device.

Abstract: A method, a device and a flash memory for storing, retrieving and deleting embedded audio video data are disclosed. The flash memory includes several partitions, where each partition includes: a main node partition to store metadata information of the partition; an inode partition, including at least one inode queue including several inodes corresponding to a same audio video track, where each inode is used to store timestamp information and storage location information of one frame of audio video data in the corresponding audio video track; and each inode in an inode queue is arranged according to a storage time sequence of the corresponding frame of audio video data; and a main storage partition, including several data blocks to store the audio video data, where at least one data block corresponds to a same inode.

Abstract: A socket includes: an input terminal configured to be electrically connected to an AC power source; an output terminal configured to output an AC signal of the AC power supply; a switch circuit electrically connected between the input terminal and the output terminal; a step-down circuit electrically connected to the input terminal and configured to reduce the amplitude of the AC signal; a shaping circuit electrically connected to the step-down circuit and configured to convert the AC signal with reduced amplitude into a shaped signal; and a control circuit electrically connected to the shaping circuit and the switch circuit and configured to control the switch circuit based on the shaping signal to enable the switch circuit performs switching operation only when the AC signal is at zero potential. A door includes the socket.

Abstract: An electronic device mainboard includes a main body; an audio collecting component provided on the main body and configured to collect audio; a main controlling component provided on the main body, connected with the audio collecting component through a printed circuit printed on the main body and configured to receive and analyze the audio and then send out interaction instructions according to the audio; and an interaction component provided on the main body, connected with the main controlling component and configured to receive and execute the interaction instructions.

Abstract: An electronic device mainboard includes a main body; an audio collecting component provided on the main body and configured to collect audio; a main controlling component provided on the main body, connected with the audio collecting component through a printed circuit printed on the main body and configured to receive and analyze the audio and then send out interaction instructions according to the audio; and an interaction component provided on the main body, connected with the main controlling component and configured to receive and execute the interaction instructions.