42results about How to "Realize remote wireless control" patented technology

The invention discloses an electromagnetic metering ball valve which comprises a valve body, a ball core, a valve rod and an electronic control box, wherein fluid through holes are formed in the ball core; paired electrodes are arranged in the fluid through holes, are provided with electro-magnetic induction coils in a relative manner, and are arranged in the magnetic field range of the electro-magnetic induction coils; fluid flows through the electro-magnetic induction coils and the electrodes and generates induced current in the electrodes; a circuit board is arranged in the electronic control box; a processing module capable of processing the induced current of the electrodes to obtain the real-time flow information of fluid is arranged on the circuit board. The electromagnetic metering ball valve has the following benefits: the electromagnetic metering manner is adopted to measure fluid flow, so that the measuring accuracy is high, the problem that a valve and a flowmeter are mounted separately in a pipeline is solved, and the cost is reduced; opening and closing of a butterfly bamper can be realized in a remote wireless control manner according to real-time flow, and the remote wireless control manner according to real-time flow is suitable for unified automated management, and remote control and maintenance of the pipeline.

The invention provides a remote-controlled rotary automatic erasing blackboard. The blackboard comprises a blackboard driving motor, a transmission toothed belt, two circular orbits, a strip-type blackboard block, an eraser mechanism and a control box, wherein two circular orbits are arranged in longitudinal symmetry; the strip-type blackboard block is vertically arranged in orbit slots of two circular orbits; a ring of transportation toothed belt is arranged around the inner side of the strip-type blackboard block; rotating shafts are arranged at two ends in the circle of two circular orbits; a transmission gear is arranged on each rotating shaft; a driving gear is arranged on an output shaft of the blackboard driving motor; the driving gear is connected with a driven gear at the end part of the rotating shaft through the transmission toothed belt; a controller, a wireless communication module and a power source module are arranged in the control box; the controller is respectively connected with the wireless communication module and the blackboard driving motor; the erasure mechanism is used for erasing the strip-type blackboard block in a rolling way. The automatic erasing blackboard can automatically erase on the back of the blackboard, the manual erasing is omitted, and the damage of the dust to the people is lowered.

The invention discloses a wireless control method and system of an electronic lock. The wireless control system comprises an outdoor unit (100), an electronic lock device (400), an indoor gateway (200) and at least one mobile terminal (300), wherein the outdoor unit (100) is used for generating doorbell trigger information when the doorbell trigger operation is detected in the work period of the outdoor unit (100), starting an image acquisition unit (104) to acquire an outdoor image, and transmitting the doorbell trigger information and the outdoor image into the gateway (200) by a wireless network; the gateway (200) is used for transmitting the doorbell trigger information and the outdoor image into the mobile terminal (300) for displaying; the mobile terminal (300) is used for generating a related lock control command according to the input of a user, and transmitting the lock control command into the electronic lock device (400) by the gateway (200); the electronic lock device (400) is also used for controlling a lock control mechanism (403) to lock and unlock according to the lock control command.