30results about How to "Unlimited distance" patented technology

The invention belongs to the communication technical field, relating to a wide frequency mobile visual communication network system; the invention comprises visual mobile terminals, wireless wide frequency LANs, a wired wide frequency WAN and a communication system server group, wherein, each wireless wide frequency LAN can be connected with a plurality of visual mobile terminals, the wireless wide frequency LANs which are distributed in different areas are connected with each other by the wired wide frequency WAN, the communication system server group is connected with the wired wide frequency WAN, forming a complete wide frequency mobile communication network; the communication system server group processes every communication event, thereby realizing the visual communication between different visual mobile terminals. The invention combines the current wired wide frequency WAN with the wireless wide frequency LANs, thereby the invention has the advantages of simple system structure, little occupied communication resources, low running cost, high communication quality, no limit on communication distance and enough wireless bandwidth, and can realize the communication between visual mobile terminals as soon as possible.

The invention discloses a multi-modal in-vivo imaging system for small animals and a small animal imaging method. The multi-modal in-vivo imaging system for small animals comprises a bracket, the bracket comprises a carrying bed system and a bracket system, the bracket system is provided with a rotary disc, and the carrying bed system is located in the axial direction of the rotary disc; the rotary disc is provided with reflector devices of an X-ray computer tomography subsystem, a positron emission tomography subsystem and an optical subsystem; the optical subsystem comprises a bio-luminescence tomography optical subsystem, a fluorescence molecular tomography optical subsystem and an optical camera, and the optical camera is mounted on the carrying bed system; the imaging view of the X-ray computer tomography subsystem, the imaging view of the positron emission tomography subsystem and the imaging view of the optical camera are at least overlapped partially; the carrying bed system further comprises an animal carrying bed, and the animal carrying bed is used for moving small animals to the overlapped region of the views.

The steering mechanism for miniature four-wheel vehicle includes steering rod assembly, steering link rod mechanism and steering gear connected to the steering rod assembly and the steering link rod mechanism. The steering gear includes shaft, shift plate and elastic connecting part, and the shift plate has one end fixed to the shaft and the other end hinged to the steering link rod mechanism via the elastic connecting part. The present invention has simple structure and easy manufacture, may be matched with elastic suspension and used to realize no-interval steering transmission. The present invention may be used widely in various kinds of miniature four-wheel vehicles and three-wheel vehicles.

The invention provides a remote data transmission method, a cloud data gateway and a vehicle-mounted terminal. The method comprises: a cloud data gateway receives remote data sent by a sending client, wherein the remote data include received identifier information of a vehicle-mounted terminal; the cloud data gateway sends the remote data to the vehicle-mounted terminal according to the identifier information of the vehicle-mounted terminal. With the method, the distance is not limited while data transmission is carried out between the sending client and the vehicle-mounted terminal and the transmitted data are diversified, so that the using demands of users on different occasions can be satisfied.

The invention relates to a device and a method for smelting the ice and snow of a transmission line. An ice and snow melting transformer and a selector switch are connected to the front end of the transmission line, and are positioned behind a first transformer and a main switch of the conventional transmission line. The rear end of the transmission line is provided with a three-phase connected and grounded lines before a conventional final transformer. When the main switch is switched off, the selector switch and the grounded line are switched on, and the transmission line forms a three-phase Y-connected circuit. By the device and the method, the ice coating overload phenomenon of electric wires and cables is eliminated under the severe weather conditions such as snowstorms, frozen rain and the like, a power system is ensured to be normally run under the severe weather conditions, and powerful power protection is provided for the normal running of national disaster prevention and reduction work and the economic society.

The invention discloses a civil air defense alarm system based on IP network broadcast, and belongs to the technical field of civil air defense alarm. The system comprises an alarm unified control center, an alarm terminal controller, an alarm terminal, an IP network broadcast server and a wireless network hotspot, wherein the alarm terminal is a lamp post type alarm; the alarm terminal controlleris connected with the IP network broadcast server and outputs audio to the IP network broadcast server. The IP network broadcast server is connected with the wireless network hotspot through a network and transmits audio data to the wireless network hotspot. The wireless network hot spot broadcasts audio data to an IP network sound post of the lamp post type alarm within the coverage of the wireless network hot spot through a wireless signal, the alarm terminal controller sends a control signal to an alarm unit of the lamp post type alarm in a wireless mode, and the alarm unit controls on-offof the IP network sound post according to the control signal. The audio of the alarm terminal is transmitted in a digital mode, the audio quality is guaranteed, distance limitation is avoided, infinite expansion can be achieved, deployment is convenient, and the alarm terminal is very practical.

The purpose of the present invention is to provide a wireless remotely controlled electronic anti-theft lock, and because the remote control distance is not limited, the wireless remotely controlled electronic anti-theft lock can be unlocked from any place in the world. A lock core does not need to be replaced, an external power supply and charging are not needed, a password can be changed, and therefore use is convenient, safe and reliable. The remotely telephone-controlled electronic anti-theft lock comprises a remote-control telephone, a program-controlled telephone, a main telephone-controlling unit, a main lock-controlling unit and an electronic anti-theft lock; wherein, the electronic anti-theft lock comprises an unlocking mechanism, a locking mechanism and an electronically driven clutching mechanism; the program-controlled telephone is connected with the main telephone-controlling unit through a line; and the main lock-controlling unit with a wireless receiver is connected with the electronically driven clutching mechanism which controls the locking and unlocking of the unlocking mechanism and the locking mechanism.

The invention relates to cluster-well calandria oil pumping equipment, in particular to an energy-saving pumping unit, and two energy-saving pumping units can simultaneously be driven by a set of powers. The energy-saving pumping unit comprises a hydraulic system (1), a valve (1-1), a pipe (1-2), a welding joint (21), a pipe joint cap (20), and the like, and the energy-saving pumping unit is characterized in that a base packing box (3) passes through a piston rod (2) and is hermetically connected with the piston rod (2) by shaft HBTS (27), the lower end of a connecting cylinder (4) is in threaded connection with the base packing box (3), a packing gland (5) is respectively fixed on the upper end of the base packing box (3) and the lower end of a lower cylinder cap (6) by two hexagon-headed bolts (28), a dustproof ring (26) is arranged in the packing gland (5), the upper end of the connecting cylinder (4) is in threaded connection with the lower end of the lower cylinder cap (6), a guide belt (25) is arranged in the lower cylinder cap (6), and a lateral hole of the lower cylinder cap (6) is in threaded connection with a welding joint (21). The invention has the advantages of small host volume, light weight, simple structure, less material consumption, low cost, and low one-time equipment investment.

The invention discloses a navigation center line extraction method for a vegetable greenhouse inspection robot, and belongs to the field of machine vision. The navigation center line extraction method comprises the following steps: acquiring an inter-ridge image between crop rows in a vegetable greenhouse through a camera, and obtaining a corrected inter-ridge image; performing image segmentation on the corrected inter-ridge image to obtain an inter-ridge soil foreground and a crop row background; removing holes in the segmented image through morphological closed operation and a small-area removal method in sequence to obtain a low-noise soil foreground and a low-noise crop background; detecting the edge of the low-noise soil foreground through a Canny edge detection algorithm to obtain a contour line of soil between ridges; extracting contour feature points according to the contour line of the soil between the ridges, and fitting the extracted contour feature points through a least square method to obtain navigation reference lines on the two sides of the soil between the ridges; and calculating an angular bisector between the navigation datum lines on the two sides of the inter-ridge soil to obtain a navigation center line.

The invention provides an intelligent parking device elevator with a rotating disc. The elevator comprises a shell, wherein a lifting mechanism is arranged in the shell, a vehicle carrying plate is arranged at the lower end of the lifting mechanism, connecting rods corresponding to supporting legs are arranged on the two sides of the vehicle carrying plate, and the lifting mechanism and the automatic rotating disc are connected with a controlling unit; the lifting mechanism is composed of a driving assembly arranged in the shell, connecting shafts arranged in the shell in the horizontal direction and in linkage connection with the front side and the rear side of the driving assembly, mounting bases movably connected to the two ends of the connecting shafts through bearings and fixedly connected into the shell, winding wheels arranged on the connecting shafts on the mounting bases, and steel cables wound on the winding wheels, wherein the lower ends of the steel cables are fixed to thecorresponding connecting rods; and the bottom of the shell is provided with through holes matched with the steel cables. According to the elevator, lifting is carried out by adopting the steel cables,the lifting distance is not limited, the structure is simple, the cost is low, and the use is convenient.

The invention discloses a temperature control assembly, a control method and a fan coil, and relates to the technical field of air conditioners. The technical problem that in the prior art, the installation position and the installation distance of a DDC electric control box are limited, and the control area of a single temperature controller is limited, so that the temperature distribution in thesame space is not uniform is solved. The temperature control assembly comprises at least two temperature controllers, wherein the at least two temperature controllers are connected in parallel, the at least two temperature controllers are installed on different control units respectively, so that the temperature of the control units where the at least two temperature controllers are located is detected and controlled through the at least two temperature controllers respectively. Compared with the DDC electric control box in the prior art, the temperature control assembly has the advantages that the distance between the temperature control assembly and a unit can be increased, so that the installation position and the installation distance of the temperature control assembly are not limited, moreover, the production cost can be reduced, and the competitiveness of a finished product is improved; and compared with the single temperature controller in the prior art, the control area of the temperature controller can be increased, so that the temperature of the same space reaches the preset temperature, and the temperature distribution is uniform.

The invention provides an AR sculpturing method. The AR sculpturing method comprises the steps of acquiring real world image information; calculating a spatial relationship according to the real worldimage information, and establishing a coordinate system according to the spatial relationship; establishing a creation plane according to the coordinate system; and creating a sculpture according tothe creation plane. According to the technical scheme, sculpture creation is realized in a virtual world by using a virtual reality method, so that the burden of creators is greatly reduced. Moreover,sculpture creation is realized by adopting the virtual reality method, so that the creation efficiency is improved.