Abstract: The present disclosure relates to a power supply circuit and an electrical device. The power supply circuit includes: a first switch; a first capacitor connected in series with the first switch; a voltage sampling device configured to detect a voltage of the first capacitor and/or a power supply bus to which the power supply circuit is connected; and a control circuit configured to output a control signal based on the detected voltage, wherein the first switch is configured to be switched on or off based on the control signal. In this way, a low-voltage withstanding capacitor with a large capacitance can be achieved in the power supply circuit by switching out the capacitor when the power supply bus voltage is high and switching in the capacitor to assist in power supply when the power supply bus voltage is low.

Abstract: The present disclosure relates to a method for controlling a contactor, wherein power is supplied to the contactor by a power supply external to the contactor. The method includes: in response to determining that a power supply voltage of the power supply is greater than a first voltage threshold, determining whether an abnormal current drop process occurs; and in response to determining that the abnormal current drop process occurs, controlling a first power supply time, during which a first power supply voltage for the contactor is supplied, to be extended from a preset first value to a second value, wherein the abnormal current drop process indicates that the contactor fails to attract as expected. The present disclosure also relates to a contactor system, a computer program product and a computer-readable storage medium.

Abstract: Provided are a collaborative operation method for multiple mowing robots, a device and a product, which relate to the field of collaborative operation of robots. The collaborative operation method for multiple mowing robots includes: acquiring state data of a mowing robot, environment and operation region data, and task execution data; establishing, according to the environment and operation region data, the state data of the mowing robot, state data of an unmanned aerial vehicle (UAV), starting point information of the mowing robot, and starting point information of the UAV, a complete map information with a traveling-salesman path method; performing multi-region segmentation according to the complete map information; determining costs of different tasks according to segmented regions, the state data of the mowing robot and the task execution data, and determining an optimal cost solution with a Hungarian algorithm.

Abstract: Provided is an active-passive dual overload disengagement mechanism for a mower blade. The active-passive dual overload disengagement mechanism for a mower blade includes a blade holder and a control rod, where the blade holder is configured to connect an output shaft of a drive motor to the mower blade in a transmission manner, and release a transmission state between the output shaft of the drive motor and the mower blade when the mower blade impacts against a hard obstacle. According to the present invention, the mower blade is an external sheet structure. Blades of two mower blades are provided symmetrically, and can cut a tough weed. The control rod includes one end connected to the blade holder, and the other end connected to a servo motor. The servo motor can drive the control rod to move the blade holder to a preset position.

Abstract: Embodiments of the present disclosure provide a forward and reverse rotation control device for power-using equipment.

Abstract: The present disclosure provides a transport case, which includes a case body, the case body being internally provided with a containing space for containing materials; the case body includes a supporting framework and a protective coating, the supporting framework being coated with the protective coating, wherein the supporting framework is made of a metal material, and the protective coating is made of a plastic material. The problem in the art known to inventors of low pressure bearing capacity of the transport case is solved.

Abstract: A switch is disclosed, including: a static contact; a static iron core; a moving iron core including a narrow part passing through the first opening of the cavity and a widened part immediately adjacent to the narrow part and away from the static contact relative to the narrow part, and the moving iron core passes through the cavity through the first opening and the second opening of the cavity; a moving contact fixedly arranged on the moving iron core, wherein the platform abuts against the static iron core when the moving contact is in contact with the static contact; a coil arranged in the cavity; a reset piece connected to the moving iron core, wherein the reset piece exerts an elastic force on the moving iron core away from the static contact when the static contact is in contact with the moving contact.

Abstract: A bidirectional operation mechanism for a switching device and a switching device assembly. The bidirectional operation mechanism includes: a housing; an operation handle; a first driving member, rotatably installed to the housing, fixedly connected to the operation handle; a second driving member, rotatably installed to the housing, operatively connected to the first driving member and the switching device, upon an external force acting on the operation handle to drive the operation handle rotate between the closed position and the open position, the operation handle drives the first driving member to rotate together, so that the first driving member abuts against and drives the second driving member to rotate, enabling the switching device to perform a closing operation and an opening operation.

Abstract: Embodiments of the present disclosure provide a forward and reverse rotation control device for power-using equipment.

Abstract: The present disclosure relates to a power supply circuit and an electrical device. The power supply circuit includes: a first switch; a first capacitor connected in series with the first switch; a voltage sampling device configured to detect a voltage of the first capacitor and/or a power supply bus to which the power supply circuit is connected; and a control circuit configured to output a control signal based on the detected voltage, wherein the first switch is configured to be switched on or off based on the control signal. In this way, a low-voltage withstanding capacitor with a large capacitance can be achieved in the power supply circuit by switching out the capacitor when the power supply bus voltage is high and switching in the capacitor to assist in power supply when the power supply bus voltage is low.