Abstract: A clamping device, an electronic device, and a remote control method of the electronic device. The clamping device includes a clamping unit, a first communication unit, and a control unit. The clamping unit is suitable for clamping the electronic device. The first communication unit is suitable for pairing with a second communication unit of the electronic device. The control unit is coupled to the clamping unit and the first communication unit. When the clamping unit is switched from an off mode to an on mode, the control unit controls the first communication unit to pair with the second communication unit and sends a screen-off command to the second communication unit via the first communication unit after the pairing is completed. When the clamping unit is in a clamping mode, the control unit sends an application open command to the second communication unit via the first communication unit.

Abstract: A clamping device, an electronic device, and a remote control method of the electronic device. The clamping device includes a clamping unit, a first communication unit, and a control unit. The clamping unit is suitable for clamping the electronic device. The first communication unit is suitable for pairing with a second communication unit of the electronic device. The control unit is coupled to the clamping unit and the first communication unit. When the clamping unit is switched from an off mode to an on mode, the control unit controls the first communication unit to pair with the second communication unit and sends a screen-off command to the second communication unit via the first communication unit after the pairing is completed. When the clamping unit is in a clamping mode, the control unit sends an application open command to the second communication unit via the first communication unit.

Abstract: A fixing system used in a wet process includes a platform, wherein the platform defines a concavity on the top of the platform, a chamber on the bottom of the platform, and a number of sucking holes inside of the platform, the concavity and the chamber are intercommunicated with each other by the number of sucking holes; and a pumping device connected to the chamber and configured to exhaust the gas. The fixing system further includes a container, the container is connected to the pumping device by a first pipe and connected to the chamber by a second pipe. Solution leaked from the through holes is collected by the container and does not enter the pumping device.

Abstract: An obstacle avoidance system based on sonar for an unmanned aerial vehicle includes an electric motor, a single sonar module, and a control panel. The sonar module rotates with the electric motor. The control panel controls a rotation of the electric motor, thereby controlling the direction in which obstacles to the flight of the unmanned aerial vehicle are detected by the sonar module. The unmanned aerial vehicle includes a fuselage, the sonar obstacle avoidance system, and an aerial vehicle controller. A sonar obstacle avoidance method is also disclosed.

Abstract: An obstacle avoidance system based on sonar for an unmanned aerial vehicle includes an electric motor, a single sonar module, and a control panel. The sonar module rotates with the electric motor. The control panel controls a rotation of the electric motor, thereby controlling the direction in which obstacles to the flight of the unmanned aerial vehicle are detected by the sonar module. The unmanned aerial vehicle includes a fuselage, the sonar obstacle avoidance system, and an aerial vehicle controller. A sonar obstacle avoidance method is also disclosed.