31results about How to "Avoid losing contact" patented technology

The invention discloses an AGV device-based logistics multi-task control system in the field of logistics control management. The system comprises a 3DP sand mould printing unit comprising multiple 3DP sand mould printers used for performing 3D printing operation in a sand box, a later processing unit used for performing solidification and sand removal operations on the sand box subjected to the 3D printing operation, full box caching stations used for temporarily storing the sand box subjected to the 3D printing operation, empty box caching stations used for temporarily storing the empty sandbox processed by the later processing unit, and an AGV device used for transferring the sand box among the 3DP sand mould printing unit, the later processing unit, the full box caching stations and the empty box cashing stations. Through safe connection of an AGV and other devices, and information binding and transmission of the sand box and a sand mould, the design and implementation of transfertask scheduling of the single AGV under complex application conditions of multiple devices, multiple tasks, uncertain paths and the like are satisfied; and the control system can be used in loading and transporting of a 3D sand mould printing process.

The invention discloses an automatic parking and vehicle taking method and system based on big data and artificial intelligence, and for automatic parking, the method comprises the steps of obtainingthe public parking position information near a destination and traffic jam condition information in a big data environment; selecting the optimal parking space meeting the user specified condition comprehensively under the big data condition; and after the parking position is determined, using the unmanned driving technology and the automatic parking technology for safely driving the vehicle to the specified parking space and parking the vehicle in the specified parking space. When the vehicle is reserved to be taken, the method includes sending a riding destination position, selecting a feasible driving route with the assistance of big data, and calculating the expected consumed time for the vehicle to automatically drive to the riding place of the user; and planning the automatic drivingdeparture time reasonably to enable the vehicle to arrive at a specified position within preset time or as soon as possible. According to the invention, the navigation unmanned automatic driving technology is used to comprehensively solve the problem that parking spaces in an urban CBD area are difficult to find or are far and expensive; and meanwhile, the convenient functions that the vehicle owner gets off immediately when arriving at the destination, the vehicle waits in advance for the owner to get on immediately when arriving at the destination and the like are achieved.

The invention discloses an assistant positioning system and assistant positioning method of a shared bicycle. The system comprises a server, a handheld operation-maintenance terminal, and a pluralityof equipment terminals; the equipment terminal is installed on the shared bicycle; the terminal equipment comprises a controller, and a GPS module, a mobile communication module, a near field communication module and a beacon module which are connected with the controller; the handheld operation and maintenance terminal comprises the mobile communication module and the near field communication module adapted to the equipment terminal; the equipment terminal and the handheld operation and maintenance terminal perform network connection with the server through the respective mobile communicationmodule. The invention has the advantage that the shared bicycle is positioned through the assistant positioning system, thereby effectively preventing the shared bicycle from losing communication, and providing great convenience for the operation and maintenance of the shared bicycle.

The embodiment of the invention provides a data processing method of a knowledge map, wherein the method comprises the following steps: receiving a query request sent by a query terminal, wherein thequery request comprises a query node, a query expansion edge and a query rule; According to the received query request, executing a data query in a pre-generated knowledge map database to obtain a query result; The query result is sent to the query terminal. The invention discloses a data processing method and a device of a knowledge map, which intuitively express a complex relationship network inthe form of a knowledge map, so that we can see clearly the origin and the origin of the hidden information, thereby more easily discovering gang fraud, discovering a plurality of contact modes of acustomer, and avoiding loss of connection.

The invention discloses a reversible cold rolling mill remote control system which comprises a reversible cold rolling mill. The reversible cold rolling mill is provided with an uncoiling area and a rolling area, and comprises monitoring devices arranged at the key positions of the uncoiling area and the rolling area and used for monitoring running conditions, execution devices correspondingly connected with the uncoiling area and the rolling area and used for correspondingly controlling each execution operation, and control devices; the monitoring devices and the execution devices are connected with the control devices; and the control devices are used for receiving monitoring signals of the monitoring devices and used for controlling the execution devices to execute corresponding operation. The system can be beneficial to effectively improving the working environment for rolling mill operation personnel, reducing the operational errors and improving a steel belt rolling effect so asto be capable of being popularized and used. The invention further provides a control method applied to the reversible cold rolling mill remote control system, so that an existing rolling adjustment control method is optimized, the steel belt adjustment precision is favorably improved, and the occurrence of the major production accidents such as off-tracking belt breakage and roll banding is effectively avoided.

The invention discloses an emergency evacuation scheduling method. The invention relates to the technical field of safety protection, in the prior art, when a fire disaster, an earthquake, a traffic accident, a terrorist activity and other sudden events happen in a construction site, evacuation is performed; evacuation efficiency is low, when a fire disaster, an earthquake, a traffic accident anda terrorist activity happen, safety is ensured. Evacuation can be effectively and safely carried out. The occurrence of emergencies is avoided. People rush to an exit. Therefore, the evacuation speedis low, and a treading event is easy to occur. Furthermore, the communication between the clusters is utilized; people are prevented from losing communication due to the influence of disasters and thelike on communication facilities; people can be gathered and evacuated in a unified mode, personnel order falling and dangers are avoided, the evacuation efficiency is high, cluster head selection iscarried out in the area with high crowd density, the crowd flow is reduced, the gathering speed is indirectly increased, and therefore the evacuation efficiency is improved.

The flow management method and device, the computer device and the storage medium are disclosed. The terminal distributes the preset total flow rate to different flow pools according to different usesof the flow rate, calculates the residual flow rate in each flow pool according to the flow rate usage of each flow pool, and dynamically adjusts the flow rate in each flow pool according to the residual flow rate. When multiple services on an end device concurrently use traffic, because traffic is allocated to different pools according to the purpose of the traffic, therefore, the terminal equipment can obtain the residual flow in each flow pool. When the flow in the flow pool used by a service is insufficient, the terminal equipment can dynamically adjust the flow in each flow pool so as tomore flexibly avoid the loss of connection caused by the flow consumption of the terminal equipment, thus ensuring the communication between the terminal equipment and the system management platformto be normal. At the same time, it also enables users to intuitively understand the use of traffic under different services, and improves the intelligence of human-computer interaction.

The invention discloses a communication equipment and system and a sleep and wake-up method. The communication equipment comprises a first WiFi module, and a first Bluetooth module which is used for sending a connection maintaining signal to the second Bluetooth module of awakening end communication equipment through a Bluetooth link when the first WiFi module is in a dormant state. The connectionmaintaining signal is used for enabling the first WiFi module to be connected with the second WiFi module of the awakening end communication equipment, and / or the connection maintaining signal is used for receiving the awakening signal through the Bluetooth link, and the awakening signal is used for awakening the first WiFi module in a dormant state. According to the invention, when the communication equipment is in a dormant state, the BT link is adopted to transmit the connection maintaining signal so as to maintain WiFi connection; the awakening signal is transmitted through the Bluetoothlink, and the awakened communication equipment does not need to be awakened regularly, so that the power consumption is saved, and awakening can be realized in time; the BT link is used as a whole toeliminate the power consumption of periodically waking up to send and receive the WiFi frame.

The invention relates to a measurement and control communication management machine for a photovoltaic box transformer substation. The management machine is suitable for intelligent control and communication management of box transformer substations in photovoltaic power stations of non-direct grounding systems or low-resistance grounding systems of 35kV or below. With the measurement and control communication management machine for the photovoltaic box transformer substation adopted, analog quantity acquisition, non-electric quantity protection, remote control and communication functions can be realized at the high and low-voltage side of the box transformer substation. The measurement and control communication management machine integrates the functions of a communication management machine and an optical fiber switch; the measurement and control communication management machine can be connected into equipment such as an inverter, a junction box, an assembly monitor, a video monitoring and a radiation instrument, and therefore, centralized transmission of communication information in the intelligent equipment in the box transformer substation can be realized. The measurement and control communication management machine can be connected into a photovoltaic power plant monitoring system through a self-healing ring fiber, and therefore, remote management and automatic monitoring of a photovoltaic field can be realized, and a fully-intelligent and unattended operation and management mode of the photovoltaic power stations, which requires few workers to guard the photovoltaic power stations, can be satisfied.

The invention discloses a cross-border personnel safety monitoring and position service system based on satellites. The system comprises a core server, a platform end and a mobile end. The input end of the core server is unidirectionally and electrically connected with a Beidou data receiving server and a Beidou director server. The input end of the Beidou director server is unidirectionally and electrically connected with a Beidou center director, and the output end of the core server is unidirectionally and electrically connected with a database service group, a business application server and a server module. The service system provided by the invention can realize multi-mode positioning, and beidou and GPS positioning can be compatible; the service system solves the problems that whenpeople going out overseas are in danger, position information is not easy to find, self-protection cannot be carried out at the first time, and work secret leakage can be caused only by relying on a GPS or other national satellites for positioning at present, and the service system has the advantages of being capable of guaranteeing continuous communication positioning and avoiding overseas work secret leakage and is worthy of popularization.

The invention discloses a method for preparing a graphite-based Si@C negative electrode material by taking micro-silicon powder as a Si source. The method comprises the following steps: pretreating the micro-silicon powder, then carrying out ball-milling mixing and reduction reaction on the micro-silicon powder and magnesium powder, and carrying out acid pickling and centrifugal drying to obtain porous crystal Si particles; and uniformly mixing the prepared porous crystal Si with dopamine in a prepared Tris buffer solution with the pH value of 8.5 to deposit polydopamine on the surfaces of Si particles, and coating the Si to prepare the composite material with the Si-C core-shell structure. The composite material has excellent electrochemical performance, relatively high specific capacity, long cycle life, high capacity retention ratio and stable cycle life; the pore structure of the carbon layer and the Si particles wrapped by the carbon layer also shortens the diffusion distance and time for deintercalation and intercalation of lithium ions; the conductivity of Si is enhanced by the coating carbon layer; and the Si@C core-shell structure also prevents the electrolyte from being in direct contact with Si to form an unstable SEI film.

The invention discloses an anti-interference cluster unmanned aerial vehicle system and a communication and positioning method thereof. The system comprises beacon unmanned aerial vehicles and task unmanned aerial vehicles. The main technology between the cluster unmanned aerial vehicles is wireless ultraviolet light communication, and the ultraviolet light communication has the advantages of interference resistance, all-weather work, high confidentiality, non-line-of-sight communication and the like; according to the scheme, the beacon unmanned aerial vehicle can reconstruct coordinates, accurate positioning, task execution, task evaluation and the like of the task unmanned aerial vehicle in an electromagnetic interference environment near the ground are achieved, the unmanned aerial vehicle system is not affected by any form of electromagnetic interference, and the characteristics and advantages of a cluster unmanned aerial vehicle system can be fully played.

The invention discloses a security guard system, which comprises a first handheld device, a second handheld device and a global positioning system, wherein the second handheld device is preset with a number list of the first handheld device to drive the second handheld device and simultaneously preset with an internal code; and the global positioning system is arranged in the second handheld device. A security guard method comprises that: when the first handheld device in the number list dials the internal code, the global positioning system is driven to perform automatic positioning and generate coordinate information, and the second handheld device transmits the coordinate information to the first handheld device; or the second handheld device is provided with a shortcut key, the shortcut key is pressed down to drive the global positioning system to perform automatic positioning and generate coordinate information, and the second handheld device transmits the coordinate information to at least one first handheld device. Therefore, circuits are guided, and the effects of preventing stealing and tracking loss are achieved.

The invention provides a method for realizing switching of a synchronization surface between network ports on a radio frequency unit, and relates to the technical field of communication interfaces. The method comprises the steps: connecting a distribution unit and a radio frequency unit through an optical fiber by using an SFP interface; arranging a processor to monitor the Ethernet main body module; reading and writing a switch register; when it is monitored that the SFP interface is interrupted, inquiring the locking state of the network port; setting a first data stream selection switch and a second data stream selection switch; if only one network port is locked, configuring a switch register to send a control signal to a data stream selection switch, and switching a data path of the 1588 functional module to the network port for adaptation; if it is monitored that the plurality of network ports are locked, enabling the processor to configure a switch register to select and send a control signal to the data stream, and switching the data path of the 1588 function module to the network port with the smallest network port number. A single network port on a transmission synchronization surface can be prevented from being disconnected, and the normal work of the whole communication equipment is kept.

The invention discloses a portable student identity card integrating multiple functions, which comprises a certificate bag, a connecting column, a pull head and a processor. A bag window is arranged on the front end surface of the certificate bag. A student identity card is arranged in the certificate bag, an antenna is arranged above a display screen, and loudspeakers are arranged on the left side and the right side of the antenna. According to the invention, through the installed processor, the school notification information received by the student ID card can be processed. Sliding betweenthe upper end cover and the lower end seat is realized. The overall structure size of the student ID card can be changed. The overall size of the student ID card can be reduced; students can carry thedevice conveniently. Meanwhile, the school can know the position of the student all the time through the installation of the GPS positioner, so that the problem that the student is lost is avoided. The personal safety problem of the student can be guaranteed. The installed certificate fixing seat can play a role in buffering the collision of the student certificate, and the service life of the student certificate can be prolonged.

The invention discloses an intelligent robot control system, and belongs to the technical field of robot control. The intelligent robot control system comprises a power supply unit, the output end ofthe power supply unit is electrically connected with the input end of a power supply electric quantity acquisition module, and the output end of the power supply electric quantity acquisition module is electrically connected with the input end of a judgment module. According to the intelligent robot control system, the power supply electric quantity acquisition module, the judgment module, a transmission feedback module, a wireless transmission unit, a 5G flow transmission module, a database, a position information acquisition module, a line selection module, a central processing unit, a powersupply switching module and an execution module are arranged, so that the 5G flow transmission module can be selectively switched, a good connection state of a robot is guaranteed, the problem of large economic investment caused by directly adopting the 5G flow transmission module is avoided. Meanwhile, the intelligent robot control system can be independently charged, reduces the labor intensityof manual charging, and further fully embodies the concept of complete independent operation of the robot.

The invention provides a method and terminal for remote control of an unmanned vehicle; two parallel wireless channels for receiving and sending remote control instructions are monitored, and the frequencies of the two wireless channels are different. According to monitored remote control instructions sent by the two wireless channels, operations corresponding to the remote control instructions are executed; the reliability and stability of a communication link is maximized to guarantee by double-frequency redundant backup communication, signal disconnection and errors caused by interference due to frequency bands are prevented, and the safety and reliability of remote control of the unmanned vehicle can be ensured.

The invention provides a navigation method and device and a navigator. The navigation method comprises acquiring a work mode of a portable device according to a received input instruction, acquiring and storing current position information in real time at preset time period intervals and displaying the current position information through a display mode corresponding to the work mode. The device is free of map data and a mobile communication module so that potential safety hazard caused by a poor map precision and a poor mobile signal is reduced.

The invention discloses an exploratory well sampling method based on an undisturbed soil exploratory well sampling robot. The method comprises the steps of: 1, determining a position of a soil sample;2, acquiring an exploratory well; 3, lowering the sampling robot; 4, fixing the sampling robot and regulating a height and an orientation of the sampling robot; 5, lowering a sample box; 6, obtainingthe soil sample; 7, setting out the soil sample; 8, transporting the soil sample; and 9, shifting the sampling robot. According to the exploratory well sampling method disclosed by the invention, fixing between the sampling robot and the exploratory well is implemented by utilizing expansion of a supporting airbag; groove carving is carried out by utilizing the robot so as to sample; the soil sample is stably and accurately obtained by adopting a sampling mechanism; disturbance of the soil sample to the sample box in the setting-out process is balanced by utilizing a balancing airbag, so thatundisturbed soil can be taken out in the premise that a worker does not enter the well, thereby ensuring personal safety of the worker; and the exploratory well sampling method is small in volume, light in mass and high in intelligence degree, can be widely used for sampling various types of soil bodies and provides high-quality research samples for scientific research design.

The invention discloses an undisturbed soil exploratory well sampling robot. The sampling robot comprises a first winch, a second winch, a sampling robot body and a sample frame, wherein the first winch and the second winch are installed on the ground, the sampling robot body cooperates with the first winch and extends into an exploratory well, and the sample frame cooperates with the second winchand is down-placed onto the sampling robot body. According to the sampling robot, fixation between the sampling robot and the exploratory well is realized through expansion of a supporting air bag; asoil sample is acquired stably and accurately by the adoption of a sampling mechanism through robot channeling sampling; a balancing air bag is utilized to balance disturbance of the soil sample on the sample frame in the lofting process; a worker can take out undisturbed soil on the premise of not entering the well, so that the personal safety of the worker is guaranteed; and the sampling robotis small in size, low in weight and high in intelligent level and can be widely used for sampling all kinds of soil masses to provide excellent research samples for scientific research design.

The invention relates to the field of environmental protection equipment and in particular relates to a reaction device for removing ammonia nitrogen in river channel water. The reaction device comprises a floating platform, a propelling assembly, a liquid outlet assembly and a control assembly, wherein the liquid outlet assembly comprises a gas pump, a double-paddle liquid outlet mechanism and aliquid storage tank; the double-paddle liquid outlet mechanism comprises an upper paddle and a lower paddle; a driving motor for driving the upper paddle and the lower paddle to rotate at the same time is arranged at the top of the floating platform; a plurality of liquid outlet holes for discharging liquid are formed in paddle blades of the upper paddle and the lower paddle; the double-paddle liquid outlet mechanism and the liquid storage tank are connected through a hose; a solar cell panel for supplying power is further arranged above the control assembly; the double-paddle liquid outlet mechanism is arranged between the liquid storage tank and the control assembly; the control assembly comprises a controller, a power supply module and a wireless communication module. According to the reaction device for removing the ammonia nitrogen in the river channel water, provided by the invention, manual manner can be replaced to carry out automatic liquid feeding on a river surface; the contact between liquid and river water is more sufficient, the labor cost is extremely reduced and the reaction efficiency is improved.

The invention relates to the technical field of fixed-wing aircrafts, in particular to a fixed-wing aircraft control system and method based on 5G communication, the fixed-wing aircraft control systemcomprises a fixed-wing aircraft, 5G CPE equipment, a server and a ground receiving terminal, and the fixed-wing aircraft is provided with an air pressure and temperature and humidity sensor, a GPS positioner, an airspeed meter and a data integration module; a flight controller, a return controller and a touch display are installed on the ground receiving terminal, the 5G CPE equipment is fixed onthe fixed-wing aircraft, the server is close to the ground receiving terminal, and output end electrodes on an air pressure sensor, a temperature and humidity sensor, a GPS positioner and an airspeedmeter on the fixed-wing aircraft are connected with the input end of a data integration module. The automatic homeward voyage protection system is arranged, the fixed-wing aircraft is prevented fromlosing communication, 5G CPE equipment is installed on the fixed-wing aircraft, network delay is avoided, control smoothness is facilitated, and signal interference is reduced.

The invention discloses a method for positioning a robot in a hydraulic pipe culvert, which comprises the following steps of: filling water into the pipe culvert to reduce the interference of a flow field on the robot; the two robots are fixed to the pile numbers a and b correspondingly, and it is guaranteed that the connecting lines of the robots are horizontal through gravity sensors; additionallayers with different densities are wrapped outside the cable, so that the cable is prevented from winding. The horizontal distance between a and b is measured through ultrasonic waves conducted by the pipe culvert; and the first robot is moved to a deeper pile number c, the process is repeated, and the detection work of the whole pipe culvert is completed. According to the method, steering of the detection path can be realized at the inflection point in the pipe culvert, and the distance measurement result of each station is corrected through the position of the internal structure of the pipe culvert. Under the condition that the pipe culvert is closed and robot positioning signals are blocked, local coordinates in the pipe culvert can be established, robot positioning is achieved, the robot is prevented from falling off a steep slope, getting stuck and losing communication, and it is guaranteed that the detection result corresponds to the structure position.