38results about How to "Long control distance" patented technology

A remote light adjustment controller for semiconductor illumination, which contains first communication interface unit, protocol conversation unit, second communication unit, and LED illumination unit. The remote control information from first communication unit is converted into internal bus protocol by protocol conversation unit, and implements PWM light adjustment control to LED illumination unit. Said invention adapts to bidirection control, wireless control and remote control.

The embodiment of the invention discloses a terminal. The terminal comprises a first external communication interface which is used for receiving a first service discovery frame broadcasted by each terminal; a first processor which is used for analyzing the first service discovery frame of each terminal received by the first external communication interface and determining the terminal information of each terminal, wherein the terminal information comprises terminal equipment serial numbers and service attributes; a display which is used for displaying the terminal information determined by the first processor; and a user input device which is used for obtaining photographing operation input by a user on the display, wherein the photographing operation is the photographing operation carried out by a second terminal which is selected by the user, and the second terminal is the terminal of which service attribute is photographing service in the terminals. The first external communication interface is also used for sending a second service discovery frame to the second terminal according to the terminal equipment serial number of the second terminal in response to the photographing operation obtained by the user input device. A photographing instruction is carried in the second service discovery frame.

The invention discloses a smart television remote controller man-machine interaction method. A remote controller and a smart television are connected by adopting wireless and infrared modes, the remote controller is provided with an infrared transmitting head, a touch area and buttons, a multi-point touch control technology based on a projective capacitor is adopted in the touch area, the touch area supports multi-point touch control, and multiple targets can be operated at the same time, and the operation modes include a mouse-imitated operation mode and a touch control working mode. Compared with an existing man-machine interaction method, the smart television remote controller man-machine interaction method uses the wireless connection, the operation distance is long, no angle restriction exists, data transmission quantity is large, and an infrared transmitter is matched with an infrared camera of a host computer end and is used for focus locating and operation of the remote controller. The designed smart television remote controller man-machine interactive operation method enables the operation of the smart television main computer end to be quite convenient and fast, and the smart television remote controller man-machine interaction method has the advantages that operation is flexible, adaptability is wide, and convenience and efficiency are achieved.

The invention relates to the technical field of the combination of environment monitoring and wireless control, in particular to a system capable of simultaneously monitoring a plurality of pathogenic microorganism aerosol pollution colonies. The system is characterized by comprising a control terminal and at least one microorganism sampler, and data transmission between a wireless module inside the control terminal and a radio frequency module of the microorganism sampler is performed in a wireless transmission mode. In the invention, a wireless networking technology is utilized to realize multipoint sampling with multiple samplers at the same time, one control terminal in a certain distance is used for unified control, and the problem of real-time, intelligent and multi-place acquisition is solved. The invention has the advantages that the system is easy to carry, small in size, wider in control range and farther in control distance, the control is more real-time, gas circuit connections are fewer, the suction of sampled gas is more stable, the separation of gas in water is more complete, a monitoring result is accurate and reliable, and better personal safety can be ensured by utilizing the system to monitor personnel.

The invention discloses a distributed airship control system, which comprises at least one collection drive unit, a core computer and at least one digital transmission bus; After the information is converted into a digital signal, it is sent to the core computer through the digital transmission bus, and on the other hand, it receives the control instructions from the core computer to control the action of the actuator; The running state information is processed and the control command is sent to each acquisition drive unit through the digital transmission bus. The airship control system adopts the method of distributed acquisition drive and centralized management and control, which has strong flexibility and scalability.

The invention relates to the technical field of lifting, in particular to a controllable high equipment disassembling device and method. The controllable high equipment disassembling device comprises a supporting rod (1), fixing hoops (2), a holding rod head (3), a lifting rope sleeve mechanism and a control mechanism, wherein the fixing hoops (2) are used for fixing the supporting rod (1) to a to-be-disassembled equipment fixing base; the holding rod head (3) is rotationally connected to the top of the supporting rod (1); the lifting rope sleeve mechanism is arranged on the supporting rod (1) and used for clamping and lifting to-be-disassembled equipment (4); and the control mechanism controls the lifting rope sleeve mechanism to work. According to the controllable high equipment disassembling device and method, disassembling is convenient, the cost is low, the occupied space is small, and line equipment is not prone to being damaged.

The invention discloses an automatic positioning flame detection system for a three-dimensional space. The automatic positioning flame detection system comprises a front-end monitoring unit connected with a fire scene, a control center connected with the front-end monitoring unit as well as a firefighting linking unit connected with the control center. According to the automatic positioning flame detection system, image acquisition is carried out on the scene at different orientations by adopting more than two sensors in high-resolution infrared CCD (Charge Coupled Device) image type flame detectors; and intelligent fire identification processors are used for analyzing a video image by using a fire flame image identification algorithm and an image three-dimensional algorithm, capturing fire flame information of the scene, analyzing flame position, fire alarm information, the positions of the flame detectors and the flame orientation, transmitting the analysis result to a fire monitoring and managing platform and outputting a signal to an automatic fire alarming control host to the firefighting linking unit. The automatic positioning flame detection system has the characteristics of high positioning precision, long monitoring distance, great protection area and quick speed response and can better meet the requirement of great-space occasions on fire monitoring.

The invention discloses a small differential high-voltage output relay structure. The relay control box includes a bottom plate, a side plate, a cover plate and a wiring board assembly; the bottom plate in the side plate is provided with a circuit board support and a relay support , the circuit board bracket is connected with a control circuit board, and the relay bracket is connected with a relay; the circuit of the control circuit board includes an input power supply, a three-terminal voltage regulator circuit, a differential drive circuit, a spike suppression circuit, and a control signal anti-shake circuit , Relay drive circuit, power output circuit and status indication circuit. The present invention has the advantages of small size, light weight, strong load capacity, excellent reliability, high insulation resistance, good environmental adaptability, difficult signal attenuation, strong anti-interference ability, low power consumption, strong reliability, and easy implementation of RS485, RS232, RS422, CAN, CC‑LINK bus remote control, accurate control, sensitive action, compatible with computer digital control system, and strong environmental adaptability.

The invention relates to a wireless control circuit for an automatic thin-wall copper tube fresh air handling machine. Traditional wireless control circuits are mostly active circuits, especially trigger signals are from large-capacity electric equipment including an air conditioner and the like, and therefore the defects that a sampling circuit is complex, a control circuit is prone to being interfered by the outside world and a control distance is short exist. According to the wireless control circuit, when an air conditioner compressor is started and works, currents serve as a signal source and by the utilization of the current transformer principle, and voltage induced by a secondary side is processed and then serves as a signal source of the control circuit and a power source provided for a transmission circuit. A control signal is coded and then transmitted, passive and wireless data transmission and reception are achieved, and then controlled electric appliances including the fresh air handling machine and the like are controlled. The wireless control circuit for the automatic thin-wall copper tube fresh air handling machine is simple, passive, low in code coincidence, reliable in control and long in control distance.

The invention discloses a radio frequency relay differential voltage control circuit which includes two coil loads L1 and L2, two loops of matched resistance circuits, differential amplifiers and amplifying drive circuits which are successively connected, and a radio frequency output circuit. The radio frequency circuit includes corresponding auxiliary contact J1 and radio frequency contact S1, and corresponding auxiliary contact J2 and radio frequency contact S2. The coil load L1 controls the pick-up between the auxiliary contact J1 and the radio frequency contact S1. The coil load L2 controls the pick-up between the auxiliary contact J2 and the radio frequency contact S2. In each loop, the matching resistance circuit is separately connected to two output ends of a differential signal of one twisted-pair cable. According to the invention, the radio frequency relay differential voltage control circuit herein is controlled through differential voltage signals, the differential amplifiers have strong anti-interference capability, the maximum control transmitting range can reach as far as 1200 meters, thus fully satisfying the requirements of control ranges of aviation air-borne signals. According to the invention, the radio frequency relay differential voltage control circuit herein uses differential transmission methods and is advantaged by long control range, fast transmitting range, strong anti-interference capability, and high working stability.

The invention discloses a safety remote control switch based on dual laser control, which comprises a homing position adjusting base, a dual laser control module and a receiving control module, wherein the dual laser control module is fixed on the homing position adjusting base; a homing telescope is fixed on the dual laser control module; the dual laser control module comprises a first laser source, a second laser source, a first switch and a first power supply; the first laser source and the second laser source are connected with the first power supply through the first switch; the receiving control module comprises a first laser receiving unit, a second laser receiving unit, an external control switch, a second switch and a second power supply; the first laser receiving unit, the second laser receiving unit and the external control switch are connected; the first laser receiving unit, the second laser receiving unit and the external control switch are connected with the second power supply through the second switch. The safety remote control switch based on dual laser control has the advantages of long control distance, strong anti-interference ability, very high safety, quickness in operation, and simpleness in homing.

The invention discloses an automatic control system of a fracturing blender truck. The automatic control system comprises a display control panel, a controller, a data acquisition system and a control actuator. The data acquisition system comprises a mixing cylinder liquid level sensor, a discharge pressure sensor, a sand density sensor and an additive density sensor; the control actuator includes a suction hydraulic motor, a manifold exhaust hydraulic motor, a sand inlet hydraulic motor and an additive hydraulic motor, oil ports of the four hydraulic motors are communicated with a hydraulic pump through an electromagnetic valve; and the controller is, through a line, connected with the display control panel, the electromagnetic valve, the mixing cylinder liquid level sensor, the discharge pressure sensor, the sand density sensor and the additive density sensor. The beneficial effects of the invention are that: the automatic control system and the method of the fracturing blender truck are suitable for various harsh environment conditions, and are simple in operation and reliable in performance; the automatic control operation reduces the labor intensity of workers and improves the work efficiency; the real-time collection and analysis of all data are realized; the control is accurate, highly efficient, greatly real-time; and the safety of operators is guaranteed.