Abstract: A lost circulation detection device includes a first detection member and a second detection member, a first signal transmitter and a first signal receiver are disposed on the first detection member, and the first signal transmitter transmits a signal along an axial direction of a rockshaft so that the first signal receiver acquires data information of drilling fluid in the axial direction of the rockshaft; a fluid channel penetrating through the second detection member is disposed in the second detection member, and the fluid channel is configurable to be in communication with the rockshaft; a second signal transmitter and a second signal receiver are disposed oppositely on two sides of the fluid channel, and the second signal transmitter transmits a signal along a center line of a second accommodating groove, so that the second signal receiver acquires data information of drilling fluid in a circumferential direction of the rockshaft.

Abstract: The present invention discloses a method and device for controlling an intelligent device, a computer device, and a storage medium. A major technical solution is as follows: acquiring, by a mobile terminal, broadcast messages of surrounding intelligent devices by means of Bluetooth scanning; displaying the broadcast messages of the intelligent devices with Bluetooth signal intensities exceeding a target numerical value on a screen interface of the mobile terminal; determining the intelligent device with the strongest Bluetooth signal displayed on the screen interface of the mobile terminal as a first intelligent device, and establishing a Bluetooth connection with the first intelligent device; and sending, by the mobile terminal, a device identification of a target intelligent device and a control instruction selected by a user from the intelligent devices displayed on the screen interface for controlling the target intelligent device to the first intelligent device when receiving the control instruction.

Abstract: The present invention relates to the technical field of intelligent switches, and discloses an intelligent wall panel switch which can preset scene modes and is simple in operation, including a switch body and a controller arranged within the switch body, wherein the controller includes a single live wire power obtaining function module, a power management module, a Bluetooth module and a function key input module. The single live wire power obtaining function module is used for obtaining a voltage source input by a phase line, the power management module is used for receiving a stepped-down voltage, and the Bluetooth module is used for receiving a regulated voltage. The Bluetooth module establishes a wireless communication connection with LED lamps for receiving instruction information input by operation keys. The Bluetooth module correspondingly adjusts the scene mode of the LED lamps according to the instruction information.

Abstract: A server and method detects work statuses of air compressors in a pipeline system. The server reads pipeline system data and air compressor data measured from the pipeline system and determines if work status of an air compressor needs to be changed. A warning message is generated by the server and sent to an alarm computer in response to a determination that the work status of the air compressor needs to be changed. The server saves the pipeline system data and the air compressor data into a database system.

Abstract: A device housing for example a CD-ROM player, which includes a rack having two recessed seats bilaterally disposed at one side and two cushions at the recessed seats; a slide, the slide having a sliding rack meshed with a reducing gear, two longitudinal tracks at two opposite lateral sides, and two calibration members for guiding linear motion of the slide, the calibration members each having a bottom coupling flange respectively coupled to the tracks, two mounting lugs at one side, and a horizontal bottom bearing flange, the horizontal bottom bearing flange defining a receiving space for receiving said tracks; a casing, the casing having two mounting holes bilaterally disposed near a rear side thereof, and two pairs of side holes disposed at two opposite vertical side walls thereof and respectively fastened to the mounting lugs at the calibration members; and a suspension plate connected between the rack and the casing, the suspension plate having two first mounting holes disposed at two opposite ends thereo