69results about How to "Large transmission distance" patented technology

A robot system for handling and transporting workpieces in a workspace includes a rail supported above a floor, at least two robot arms supported on the rail for mutual relative displacement and coordinated displacement along the rail, each arm articulating about multiple axes for engaging and supporting the workpiece, and a controller communicating with each of the robot arms to control displacement and articulation of each robot arm, whereby the workpiece is engaged by each gripper, lifted on the robot arm, carried along a path, which may include motion along the rail, and released from the gripper at its destination.

Data encoded in packets modulated onto a carrier wave is transmitted between a base station and a transponder. Each packet includes a header section that contains at least a reference symbol and that serves for adjusting one or more transmission parameters, and a further section such as a data section. The transponder transmits data back to the base station through modulation and backscattering of the carrier wave. During the transmission of the header section by the base station, the transponder transmits transponder operating information relating to the processing of data to be received and/or transmitted by the transponder, by corresponding modulation and backscattering of the carrier wave. In response to and dependent on the received transponder operating information, the base station adjusts at least one transmission parameter, whereby the highest data transmission rate within the capabilities of the particular transponder can be achieved.

In a method for transferring crop material from a harvesting machine to a hauling vehicle, with which the crop material is accelerated and ejected through a conveyor chute of a transfer device to a target point on the transport vehicle, the acceleration of the crop material to be transferred is controlled as a function of at least one parameter that represents a transfer distance. A corresponding control unit for a harvesting machine, and a harvesting machine with a control unit of this type are also provided.

The invention discloses a method for acquiring wireless sensor network data of farmland ecological environment information, and relates to the technical field of a method for acquiring wireless sensor network data. The method comprises a plurality of monitoring regions, and each monitoring region comprises an independent short-distance wireless communication network based on IEEE802.15.4; the short-distance wireless communication network is composed of a long-distance node and a plurality of short-distance nodes; each short-distance node mainly acquires the sensor data, and self-organizes a 802.15.4 network, and transmits the acquired data to the long-distance node; and the long-distance node has two wireless communication protocols, namely IEEE 802.15.4 and a general packet radio service (GPRS)/global system for mobile communications (GSM). By the method provided by the invention, large-scale large-area farmland ecological environment information data acquisition is realized, the data can be inquired in real time, the nodes can be controlled, and the cost is low.

A flexible slotted Aloha communication protocol for a burst-type communication network divides a communication channel into a series of time cycles, with each time cycle further divided into contiguous time slices of identical duration. All data transmissions in the network begin at the start of a time slice and continue for an integer number of time slices, with the identity of the transmitting terminal, the length of the transmission and error correction, being included within the first time slice of each data transmission. Communication terminals in the network transmit reservation requests to a network hub which receives the reservation requests and reserves reserved time slots each having a number of time slices which matches the length of the data transmission to be transmitted in the reserved time slot. The reserved time slot may include time slices in more than one time cycle. The communication protocol dynamically adjusts reservation parameters to match traffic load conditions on the channel and may reassign communication terminals from one channel to another in order to dynamically balance the load on the channels.

The invention discloses a curtain wall cleaning robot control system and method controlled by a microcontroller and belongs to the field of climbing robots. According to the curtain wall cleaning robot control system and method, an internal attachment walking mechanism and an external attachment walking mechanism are alternately attached to a curtain wall, so that a curtain wall cleaning robot horizontally and vertically moves, the curtain wall cleaning robot turns freely by using rotation movement of the internal attachment walking mechanism, and 360-degree all-dimensional movement is achieved; meanwhile, adhesive discs in the internal attachment walking mechanism and the external attachment walking mechanism have the extending and retracting functions, and the curtain wall cleaning robothas good obstacle crossing function and can be suitable for a frameless glass curtain wall and a frame glass curtain wall; according to the curtain wall cleaning robot control system and method, by using a microcontroller program and a control circuit, a motor and a magnetic valve in the curtain wall cleaning robot are subjected to logic control so that the curtain wall cleaning robot can executemovements such as cleaning, walking, turning and obstacle crossing according to operation commands, and the curtain wall cleaning robot is operated flexibly and conveniently, is stable and reliable,and improves the working efficiency and cleaning effect.

The invention provides a three-segment synchronous drawer sliding rail which can solve the problems that an existing three-segment synchronous drawer sliding rail is complex in synchronous structure and unreliable in synchronous driving. The three-segment synchronous drawer sliding rail comprises two sliding rail assemblies, the two sliding rail assemblies are installed at the left side and the right side of a drawer respectively and each provided with a synchronous assembly, and each sliding rail assembly comprises a fixed rail fixedly installed on the inner side wall of a cabinet body through a fixed rail support, a movable rail fixed to the outer side wall of the drawer and a middle rail slidably connected with the fixed rail and the movable rail separately; each synchronous assembly comprises a fixed rail rack, a transmission mechanism and a movable rail rack, wherein the fixed rail rack, the transmission mechanism and the movable rail rack are installed on the inner side face of the corresponding fixed rail, the inner side face of the corresponding middle rail and the inner side face of the corresponding movable rail respectively, teeth of the fixed rail rack and teeth of the movable rail rack are oppositely arranged, the transmission mechanism is in transmission connection with the fixed rail rack and the movable rail rack separately, and the transmission mechanisms of the two synchronous assemblies are synchronously connected through a connecting rod.

The invention discloses an intelligent valve remote control system and a working method thereof and relates to the field of remote control of valves. The invention provides the intelligent valve remote control system and the working method thereof, which are smart in structure, low in operation difficulty and low in cost, and can timely find out and feed back abnormal conditions of a valve in use, so that people can quickly make a judgment and timely give commands to electric execution mechanisms. The electric execution mechanisms are used for driving the valve and communicate with a signal collecting device, a monitoring center communicates with a telecommunication base station by wireless information, a plurality of mobile phone clients communicate with the telecommunication base station by the wireless information, a plurality of the electric execution mechanisms communicate with the telecommunication base station by the wireless information, and the electric execution mechanisms are in one-to-one correspondence to the mobile phone clients. The system and the method have the characteristics of being wide in transmission scope, convenient in communication, simple to use, easy to popularize and the like.

The invention discloses a plane polishing machine. The plane polishing machine comprises a workbench, and rack connecting plates are arranged on the two sides of the workbench. Each rack connecting plate is provided with a width adjusting frame and a transverse guide rail for connecting the rack connecting plates on the two sides of the workbench. The width adjusting frames are provided with widthadjusting devices moving back and forth in the length direction of the transverse guide rails, and the distance between the width adjusting frames on the two sides of the workbench is adjusted by moving the width adjusting devices on the two sides of the workbench. The rack connecting plates are provided with abrasive belt drive devices which are in drive connection with abrasive belts so as to polish the surfaces of boards. A transmission device for driving the boards to move towards the abrasive belts is included, a lifting device is arranged below the transmission device, and a lifting rodof the lifting device is connected with the transmission device so as to control ascending and descending of the transmission device. According to the plane polishing machine, the degree of automation is high, the labor cost is reduced, and the boards of different specifications can be polished.

The invention discloses a data transmission method based on LORA wireless communication and a relay. The data transmission method comprises the steps of after carrier wave data is received by virtue of a carrier wave receiving module, determining whether a set working channel of an LORA wireless communication module is in an idle state, if yes, converting the carrier wave data into wireless data, and sending the wireless data by virtue of the working channel. By arranging the LORA wireless communication module, an LORA technique can be used in the transmission process of the carrier wave data and has the characteristics of long transmission distance and wide transmission range, so that an islanding phenomenon can be effectively avoided, and the metering of a remote meter can be finished.

A method for beam guiding of a light beam generated by a light source to a target location along a path distance L_S, comprises splitting the light beam on the path distance L_S at least once into a first partial beam and a second partial beam, guiding the first partial beam additionally at least once along a delay line, the first partial beam thereby covering an additional path distance L_D, guiding the second partial beam only along the path distance L_S, combining the first and second partial beams after the first partial beam having passed through the delay line and guiding the combined beam to the target location, wherein the light beam is guided along the path distance L_S and L_D in such a way that the light beam generated by the light source has a predetermined beam width B at the target location, expanding the light beam between the light source and the target location at least once to a beam width B′>B and comprising the light beam again at least once in such a way that the light beam has the predetermined beam width B at the target location.

The invention discloses a GPS shunting phase-shifting test method for a grounding device. PPS second pulse synchronization signals are provided through a GPS artificial earth satellite. The method includes calculating the phase difference between injecting different frequency current signals, generating different frequency voltage drop and incoming and outgoing line configuration shunting and GPS second pulse signal rising edges, taking the different frequency voltage drop as reference, and realizing accurate measurement of shunting phase-shift of the grounding device. The invention discloses a GPS shunting phase-shifting test system for a grounding device. No extra referential voltage lead is needed, and the method and system are not limited and isolated by on-site test environmental conditions. The method and system have the advantages of strong anti-electromagnetic interference capability, long transmission distance, no signal delay and low workload, and are convenient to use in on-site tests.

The invention discloses an unmanned aerial vehicle high-definition video data transmission system based on a 5G network, and the system comprises an unmanned aerial vehicle; the unmanned aerial vehicle is connected with an airborne 5G base station through an internal unmanned aerial vehicle video controller, and the unmanned aerial vehicle video controller is further connected with an image acquisition device, a laser communicator and a flight control computer; and the airborne 5G base station is connected with the 5G ground station through a 5G transmission device. The unmanned aerial vehicle video data transmission system based on the 5G network is wide in transmission distance and high in transmission speed, video data can be transmitted for a long distance through the 5G network, and the video definition can be improved to 4K and 8K.

The invention discloses a method and system for monitoring health status of live pigs. Through data acquisition, system transmission and monitoring management, a closed loop including performing analyzing treatment, and judging the health status of the live pigs is formed. The data acquisition comprises acquisition of blood oxygen, cardiac rate, body temperature and movement data; the system transmission and monitoring management are used for uploading data acquired by sensors to a server through an LORA gateway to allow a health monitoring terminal to perform further analyzing treatment, so that the health status of the live pigs is judged. The system disclosed by the invention adopts multi-functional Internet of Things sensing and detecting equipment with ultralow power consumption, so that the pain spot of product monitoring in the high-density live pig breeding process is solved; through data, the physiclal status of the pigs is inspected, and the situation whether the live pigs are healthy or not is judged; and the liquid supplying device disclosed by the invention is comprehensive in acquired data, simple to operate, easy to amend and high in universality.

The invention discloses a photoelectric conversion device for detecting sulfur, and is especially applicable to the field of analytical instruments for detecting the content of sulfur element in crude oil and derivative products by energy dispersive X-ray fluorescence spectrometry. The invention integrates the optical, mechanical and electrical technology, and mainly comprises a bracing frame, an excitation light source located at one side of the bracing frame, a sample cup at the top of the bracing frame, a detector system below the sample cup, and a bumping post system controlling the on-off of the light path of the X-ray. The device has a compact structure, is convenient to use, and can rapidly detect the high or low content of sulfur element in a tested sample.

The invention discloses a wire-driven electric wound anastomat. The wire-driven electric wound anastomat is characterized in that the traction of a transmission wire is realized under the control of a motor, a nail pushing plate in an anastomosis module is further driven by the transmission wire to move forwards, and nails are pushed by the nail pushing plate. In the nail pushing process, the nail pushing plate is designed to be matched with an anastomosis baffle, the anastomosis baffle limits forward movement of anastomosis nails, the nail pushing plate is continuously controlled to move forwards, force is applied to the two sides of the anastomosis nails through the two ends of the front side of the nail pushing plate, and nail feet on the two sides of the anastomosis nails deform to achieve wound gathering. A nail storage bin is further designed in the anastomosis module, the anastomosis nails are placed in the nail storage bin, and when no anastomosis nail exists at a nail outlet, automatic nail feeding is achieved. The wire-driven electric wound anastomat can adapt to a surgical scene of a medical robot, and the safety distance between the robot and a patient is increased.

The invention relates to a monitoring system of a distribution transformer. The monitoring system of the distribution transformer comprises an audible and visual alarming device, a monitoring sensor and a computer background management system; the audible and visual alarming device is fixed to a pole which is 3m above the ground; the monitoring sensor is adhered to a housing of the distribution transformer by an attaching manner through a magnet; after the monitoring sensor is removed from the housing of the distribution transformer, the audible and visual alarming device at the site is automatically started and sends alarming information to mobile phones of responsible persons in a form of a short message, and the responsible persons are sequentially called and reminded to check the short message through the mobile phones, and meanwhile, the information is transmitted to a background for backup, and people on dusty is reminded through the background by a sounding and screen flickering manner. According to the monitoring system of the distribution transform, diverse alarming manners are provided and can be selected flexibly; the monitoring system of the distribution transformer is novel in structure, safe and reliable, convenient to network, accurate to alarm, and free of alarm failure and false alarm.

The invention discloses a preparation process of a composite membrane for a fuel cell, the composite membrane takes an expansion body polytetrafluoroethylene microporous base membrane as a skeleton, and is subjected to dipping treatment of mixed liquids with different concentrations from low to high, specifically, a treatment tank I is loaded with mixed liquid of perfluorosulfonic acid resin liquid with the concentration of 0.1 wt%-1wt%, a water-retaining agent and a free radical quenching agent; a mixed solution of perfluorosulfonic acid resin liquid with the concentration of 2wt%-6wt%, a water-retaining agent and a free radical quenching agent is contained in a treatment tank II; and a mixed solution of perfluorosulfonic acid resin liquid with the concentration of 7wt%-20wt% and sulfonated polyetheretherketone is contained in a treatment tank III. The proton exchange composite membrane prepared by the process provided by the invention does not generate pore residues, avoids hydrogenpermeation in the use process, and can meet the requirements of mechanical strength, dimensional stability and excellent electrochemical performance at the same time.