130results about How to "Expand coverage area" patented technology

The invention relates to a multiprotocol intelligent gateway based on narrowband Internet of Things, and an implementation method thereof. The multiprotocol intelligent gateway based on narrowband Internet of Things includes a low power consumption unit and a high performance unit, wherein the low power consumption unit includes a low power consumption controller, a solar cell panel, a power management module for managing the power supply mode and the cell state information, an NB-IOT module for receiving the information from a cloud server, a LoRa module for acquiring the field LoRa node information in a local LPWAN, and a signal acquisition conditioning module; the low power consumption controller is communicated with the power management module, the NB-IOT module and the LoRa module bidirectionally; and the high performance unit includes a high performance controller, an RS485 interface module for connecting RS485 nodes, a man-machine interface module for connecting a computer serial port or a serial port liquid crystal screen, a GPS interface module, a data memory module and an ethernet interface module. The multiprotocol intelligent gateway based on narrowband Internet of Things utilizes the mode of coordination of the low power consumption unit and the high performance unit, thus effectively solving the coordination problem of low power consumption and high performance under a plurality of application scenes.

The invention provides a power production safety monitoring system and a control method thereof. The power production safety monitoring system comprises a data collection and output layer, a data transmission layer, a data processing layer and a monitoring center layer. The data collection and output layer comprises an access control system, a personnel positioning system, a video monitoring system, an emergency broadcasting and communication system, an environment monitoring system, a disaster alarm control system and a hydraulic/geological monitoring system, which are connected with switches. The data processing layer comprises servers connected with the switches. The monitoring center layer comprises an access control and personnel positioning working station, a video monitoring workingstation, an emergency broadcasting and communication working station, an environment monitoring and alarm working station, a fall-proof monitoring working station, a hydraulic/geological monitoring working station and a system integration working station, which are connected with switches. The system integrates the information of sub-systems and performs determination and control according to integrated information, thereby making up loopholes and defects in hydropower station monitoring.

An RFID reader/writer including a reader/writer body, antennas and an antenna switching unit is provided. The reader/writer body distributes to each of its own ports a length of sustained time for transmitting a signal. One end of the antenna switching unit is connected to one port of the reader/writer body, while the other end is connected to two antennas. The antenna switching unit acquires a length of sustained time for the signal transmission distributed to the port by the reader/writer body, configures the time-length for the signal transmission and the sequence thereof of the two antennas according to the length of sustained time for the signal transmission, obtains a configuration result for signal transmission, and performs a switching control on the signal transmission of the two antennas according to the signal transmission configuration result. Further, an implementation method for the antenna switching of the RFID reader/writer is described.

The apparatus is composed of the narrow beam antenna of different direction and predetermined number, between the narrow beam antenna of same direction, the polarization diversity is achieved to supply the antenna system of multiple beam. In addition, the signal processing method is supplied to execute the balanced receiving on up-run multi-beam signal. The invention enlarges the coverage area, improves the system capacity and the efficiency of utilization.

The invention discloses a movable type dust removing system of a bulk cement and sacked cement car loader. The dust removing system comprises a dust suction hood covering a discharging outlet of the car loader, a dust suction device connected with the dust suction hood and used for sucking dust in the dust suction hood and an air supply device used for supplying air to the interior of the dust suction hood. A movable support used for driving the dust suction hood to linearly move in the advancing direction of the car loader is arranged above the dust suction hood. The dust suction hood comprises side hood plates arranged on the left side and the right side, a hood cover arranged at the top and flexible hood curtains arranged on the front side and the rear side. The side hood plates are movably connected with the hood cover, and the side hood plates are connected with the hood curtains through flexible connecting parts. A lifting mechanism used for driving the whole dust suction hood to ascend and descend is installed on the movable support. Dust produced in the falling process of sacked cement can be prevented from spreading outwards, and the dust collecting effect is greatly improved.

The invention provides a machine for integrating constructing, cleaning and maintaining of a hanger rail type external wall. The machine comprises hanger rails, a traveling frame, a hanger rail turntable, a rotatable frame, a cargo boom and a cargo boom self-balancing mechanism, wherein the hanger rails are mounted on an overhead steel structure of a building roof or a roof overhang building; the traveling frame is movably arranged on the hanger rails; the hanger rail turntable is fixed on the traveling frame; a circular rail is arranged on the hanger rail turntable; the rotatable frame is connected to the circular rail on the hanger tail turntable; two fulcrums are arranged on the rotatable frame and the hanger rail turntable; the cargo boom is arranged on the rotatable frame; the two ends of the cargo boom extend out of the front fulcrum and the rear fulcrum respectively; a lifting hook and a lifting basket are arranged at the front end, close to the front fulcrum, of the cargo boom; a windlass is arranged on the rotatable frame and is connected with the lifting hook; a lifting device is arranged on the lifting basket; and the cargo boom self-balancing mechanism is formed in such a way that another two fulcrums are arranged on the cargo boom and the rotatable frame, and are corresponding to the two fulcrums up and down. The machine has the functions of cleaning and maintaining, is high in safety, and is reduced in influence on a roof.

The invention relates to the field of refrigeration equipment, and discloses a dual-air-duct air conditioner and a dehumidification method and system thereof. By obtaining target temperature Ts and target relative humidity [phi]s set by a user and obtaining indoor ambient temperature Tin, outdoor ambient temperature Tout and indoor relative humidity phi in real time, whether the air conditioner meets parameter conditions for entering into an ultralow-sensible-heat high-latent-heat load area dehumidification mode, a low-sensible-heat high-latent-heat load area dehumidification mode and a medium-high-sensible-heat load area dehumidification mode or not is judged, the rotating speed of an upper fan and the rotating speed of a lower fan are controlled under certain dehumidification mode, thusthe three dehumidification modes can be switched, especially when the dual-air-duct air conditioner operates in the ultralow-sensible-heat high-latent-heat load area dehumidification mode, the upper fan is controlled to operate in a low-air gear to be mainly used for promoting air circulation, the lower fan is controlled to operate at the lowest reliable fan rotating speed to be mainly used for dehumidification, latent heat output of a compressor during low-frequency operation is improved while sensible heat output is lowered, and constant-temperature dehumidification is achieved.

The invention relates to a millimeter wave antenna module and electronic equipment. The millimeter wave antenna module comprises a plurality of antenna arrays which are used for receiving and transmitting antenna signals of a millimeter wave frequency band, wherein at least two antenna arrays are different in radiation direction angle; a switch module, which is connected with the plurality of antenna arrays to form a plurality of millimeter wave receiving and transmitting links, wherein the switch module is used for receiving a switching instruction, and switching and conducting the millimeterwave receiving and transmitting link where at least one antenna array is located according to the switching instruction so as to enable the antenna array of the millimeter wave receiving and transmitting link to perform beam scanning. Switching and beam scanning among multiple antenna arrays can be realized, the coverage area of millimeter wave signals of the multiple antenna arrays is increased,and the communication quality of 5G millimeter waves is improved.

The invention provides a reef body suitable for marine algae and fishes. The reef body comprises a floating base and a spherical sinking base. The outer portion of the floating base is provided with a floating ball; the floating base is internally provided with an upper cavity and a lower cavity which are isolated from each other; the upper cavity of the floating base is internally provided with a winding reel used for winding ropes; a plurality of extension bases arranged in parallel in the vertical direction are arranged under the floating base; a disengagement mechanism enabling the extension bases to be disengaged from the floating base on by one is arranged between the floating base and the extension bases; each of the sinking base and the extension bases is provided with a plurality of alga cultivation bricks; the sinking base is connected with the floating base through a rope; the rope penetrates through the middle portion of each extension base; the sinking base is provided with an inner cavity leading to the outside; the bottom of the inside of each extension base is provided with an extension frame capable of rotating upward. The reef body suitable for marine algae and fishes is reasonable in structure, is multifunctional, and is capable of providing food for fishes and achieving a good protection effect.

The invention relates to a millimeter wave antenna module and an electronic device, and the millimeter wave antenna module comprises a plurality of antenna arrays which are used for receiving and transmitting millimeter wave signals; a receiving and transmitting module which is connected with the at least one antenna array to form a first millimeter wave receiving and transmitting link so as to realize the communication of a millimeter wave frequency band; a switch module of which the input end is respectively connected with the at least two antenna arrays, the output end is connected with thereceiving and transmitting module to form a plurality of second millimeter wave receiving and transmitting links, wherein the switch module is used for receiving a switching instruction to control the conduction of at least one second millimeter wave receiving and transmitting link; a control module which is connected with the switch module, and is used for receiving the detection signal and outputting a switching instruction to control the on-off of the switch module, so that the at least one second millimeter wave receiving and transmitting link is in a conducting state, the switching and beam scanning among multiple antenna arrays can be realized, the coverage area of millimeter wave signals of the multiple antenna arrays is increased, and the communication quality of 5G millimeter waves is improved.

The invention relates to a multi-user large-scale MIMO channel estimation method and a multi-user large-scale MIMO channel estimation device, which aim at a Massive MIMO multi-user communication scene. The device comprises a user receiving signal module, a receiving signal covariance matrix smoothing module, a user arrival angle rapid estimation module, a beam forming technology estimation channelgain module and a channel state information matrix reconstruction module. According to the method, the angle of each scattering path of each user is accurately estimated by using a rapid channel covariance matrix smoothing technology and a rapid MUSIC spectrum search method, extremely low complexity is ensured, then channel gain on each scattering path is estimated by using a beam forming technology, and finally, a state information matrix is reconstructed. The MMSE channel estimator has very excellent channel estimation performance under the condition of full rank or low rank of the channel,exceeds the current optimal MMSE channel estimator, and is particularly suitable for the current 5G communication scene with very high requirements on time delay and transmission rate.

The invention relates to an epoxy resin vacuum pouring mechanical arm. The epoxy resin vacuum pouring mechanical arm comprises a vacuum pouring box, a feeding part, a driving part, a sealing part and a pouring part, wherein the feeding part comprises a feeding valve and a feeding pipe, the feeding pipe is connected with the pouring part by a rotary joint, the pouring part is fixed on the vacuum pouring box through a sealing chamber and a shaft sleeve in a sealing manner, the driving part drives the rotary joint and the shaft sleeve to rotate to drive the pouring part to move, the pouring part comprises a front pouring arm, a main pouring arm and a pouring angle valve, the front pouring arm and the main pouring arm are connected by the rotary joint, and the pouring angle valve is positioned at the tail end of the front pouring arm. When the above technical scheme is adopted, the pouring gate coverage area is greatly increased, the quantity of the poured products in each working period can be increased, the volume of the vacuum pouring box is relatively small, the vacuumizing time is short, the working efficiency is high and the energy consumption is low.

The invention discloses a multifunctional floatable and submergeable reef which comprises a floating substrate and a sinking substrate. A ball float is arranged outside the floating substrate. The floating substrate is internally provided with an upper chamber and a lower chamber which are isolated from each other. The upper chamber of the floating substrate is internally provided with a reel for winding a rope. A plurality of expanding bases which are parallelly arranged in the vertical direction are arranged below the folating substrate. A disengaging mechanism for realizing separation between the expanding bases and the floating substrate in a one-by-one manner is arranged between the floating substrate and the expanding bases. A plurality of alga culturing bricks are arranged above the sinking substrate. The sinking substrate is connected with the floating substrate through a rope. The rope penetrates through the middle part of each expanding base. The sinking substrate comprises an upper board and a lower board. A plurality of supporting rods are fixed between the upper board and the lower board. The invention aims to provide the multifunctional floatable and submergeable reef which has advantages of realizing reasonable structure and multiple functions, providing food for fish swarms and realizing a good protecting effect.

The present invention discloses a light guide component. The light guide component comprises at least one optical unit; the optical unit comprises a front optical surface, a back optical surface, an upper surface and a lower surface; the connection edge of the upper surface and the back optical surface is provided with a coupling incident surface; a light source component is arranged above the coupling incident surface; the back optical surface is a total-reflection surface; the front optical surface is a stepped emergent surface; at least one hollow optical region is arranged in the light guide component; and the hollow optical region includes a first optical surface adjacent to the back optical surface and a second optical surface adjacent to the front optical surface. The invention also discloses an automobile lamp. The automobile lamp comprises a lamp housing as well as a decoration ring, a support component, a power source component, external diffusion glass and the light guide component which are arranged in the lamp housing, wherein the light guide component is fixed between the decoration ring and the support component, and the external diffusion glass is arranged in front of the front optical surface of the light guide component.

The invention discloses a method for realizing heterogeneous convergence of a cellular network and a wireless local area network. The method comprises the following steps that: a terminal module of the cellular network and a terminal module of the wireless local area network are combined, such that an intermediate connection site is formed; the intermediate connection site is put in an overlaid coverage area of a cellular base station and the wireless local area network; the terminal module of the wireless local area network of the intermediate connection site is communicated with a network access point of the wireless local area network through connection of the wireless local area network; the terminal module of the cellular network of the intermediate connection site is communicated with a dual-mode terminal through connection of the cellular network; due to dual-connection of the intermediate connection site, the dual-mode terminal is communicated with the network access point of the wireless local area network; signalling related to management of a heterogeneous network is switched; and thus, heterogeneous convergence of the cellular network and the wireless local area network is realized. Heterogeneous convergence of two networks can be realized without changing a core network in a cellular communication system; and the advantages of being low in cost and rapid in period can be realized.

The invention discloses a crane beam structure safety monitoring device with a self-powered power supply, which comprises a crack sensor, a vibration power supply and an automatic alarm; the vibrationpower supply is fixed to a lower flange of a crane beam, and the output end of the vibration power supply is connected with the crack sensor and provides monitoring current; the crack sensor is arranged on the surface of the structure, and the output end of the crack sensor is electrically connected with the micro-current measuring instrument; and the automatic alarm judges the crack state basedon the current change threshold values in the metal foil and the conductive film and sends out an alarm signal. According to the invention, strain data can be monitored, the coverage area is large, and the position, length and width changes of cracks can be monitored; the vibration characteristics of the monitored object are utilized to provide current for the monitoring device, a workshop power supply system is not needed, installation is convenient, and long-term effective monitoring can be achieved.

The invention provides an optical fiber network system, comprising a first base station, a first optical near-end machine, a second base station, a second optical near-end machine, a first optical far-end machine, a second optical far-end machine, a third optical far-end machine and a fourth optical far-end machine, wherein the first optical far-end machine exchanges optical information with the first optical near-end machine through two optical fibers and exchanges the optical information with the second optical near-end machine through one optical fiber; the second optical far-end machine exchanges the optical information with the first optical near-end machine through two optical fibers and exchanges the optical information with the second optical near-end machine through one optical fiber; the third optical far-end machine exchanges the optical information with the second optical near-end machine through two optical fibers and exchanges the optical information with the first optical near-end machine through one optical fiber; the fourth optical far-end machine exchanges the optical information with the second optical near-end machine through two optical fibers and exchanges the optical information with the first optical near-end machine through one optical fiber; any one optical far-end machine is connected with the adjacent optical far-end machine, wherein a pre-set difference is set between strengths of input and output signals of the first optical near-end machine and the second optical near-end machine.