55results about How to "Flexible communication methods" patented technology

The invention relates to a method for realizing mixed network structure, belonging to the wireless communication technique, especially the frequency spectrum application of cognitive radio system and the realization of physical transmission medium of cognitive radio mixed network structure, wherein it comprises: based on the interfere temperature model, calculating the allowed maximum receiving power of receiver at said time, calculating the real emission power of sending terminal, calculating the combination of two effective frequency spectrums, and realizing the point-to-multipoint (PMP) and mesh topology in mixed structure. The inventive classified spectrum share method can realize the mixed structure that supporting the point-to-multipoint (PMP) and mesh topology, to increase the system capacity and expand the area cover range.

The invention provides a construction method of a dynamic mesh of a vehicle-mounted ad hoc network. The construction method of the dynamic mesh of the vehicle-mounted ad hoc network comprises a selection method of a leading node of the dynamic mesh, a fusion method of the dynamic mesh, a separation method of the dynamic mesh and a replacement method of the leading node. The selection method of the leading node of the dynamic mesh comprises selecting a vehicle node with a largest evaluation function value as the leading node among vehicle nodes according to a respective evaluation function value within a mutual communication range; the fusion method of the dynamic mesh comprises enabling the dynamic mesh with less GM (GM) to be a merging party and to be added into an incorporated party with more GM of the dynamic mesh; the separation method of the dynamic mesh comprises sending a separation request to a leading node GL when a or a plurality of vehicle nodes are far away from a communication range of the leading node GL and forming into a novel mesh by the vehicle nodes which are willing to join into the novel mesh after separation; the replacement method of the leading node comprises selecting a candidate leading node and handing over the leadership when the leading node is prepared to give up the leadership. The construction method of the dynamic mesh of the vehicle-mounted ad hoc network is used for constructing the dynamic mesh of the vehicle-mounted ad hoc network.

The invention relates to an automobile body control system, in particular to an intelligent automobile body control system. The intelligent automobile body control system comprises a switching module, a load module, a driving and collecting module, a communication module and a mobile terminal, wherein the switching module is used for generating a switching signal; the driving and collecting module is used for collecting the switching signal and sending the switching signal to the mobile terminal through the communication module; the mobile terminal is used for processing the received switching signal so as to generate a control signal and sending the control signal to the driving and collecting module through the communication module; then, the driving and collecting module controls the load module according to the received control signal. The intelligent automobile body control system can better save hardware cost and reduce the cost for later maintenance.

The invention discloses an electric meter box electricity anti-stealing system in the ubiquitous internet. The electric meter box electricity anti-stealing system comprises an electric energy meter measurement box of a user side and further comprises an electronic lock, a sound and light alarm device, an information processing module and a communication module; an output of the electronic lock isconnected with an input of the information processing module; a first control end and a second control end of the information processing module are respectively connected with the sound and light alarm device and the communication module; the electric meter box electricity anti-stealing system further comprises a data monitoring center positioned on a master station side; and the communication module carries out communication with the data monitoring center. The electric meter box electricity anti-stealing system is high in sensitivity, and immediately givens an alarm to frighten and alarm Illegal personnel once a phenomenon of illegally opening an electric meter box door occurs, and the system can carry out communication with the data monitoring center of a management side and can notifyan abnormal phenomenon to the data monitoring center in the first time so as to facilitate developing the next work by the power management department; and the system disclosed by the invention is relatively simple in composition structure and also relatively low in cost, and can be popularized and used in a large range.

The invention discloses a response combined antenna compatible with omnidirectional communication and satellite navigation, and aims to provide a combined antenna which is smaller in height, strong inanti-interference capability, high in transportability and compatible with navigation and communication response functions. The combined antenna is realized through the following technical scheme: anavigation system antenna is fixed in a cylindrical cavity and comprises a multilayer microstrip antenna and an amplifying circuit module which are connected in sequence, a response antenna is composed of vertical plates which are vertically and fixedly connected to the surface of a base plate and distributed around a shielding cylinder in a circular array mode, folding oscillators respectively fixed on the vertical plates and a power divider assembled with a bottom plate interlayer of a lower base plate, and the power divider feeds the folding oscillators through the bottom plate interlayer;the amplifying circuit module amplifies and filters each path of radio frequency signals from the multilayer microstrip antenna, and the radio frequency signals of the satellite navigation antenna areoutput after the radio frequency signals are combined by a multiplexer in the amplifying circuit module. According to the invention, the satellite antenna or the response antenna can be replaced according to different application platform requirements so as to meet multi-platform application.

The invention relates to the robot technology field and more particularly, to a security control system for an agricultural robot, and the system comprises a positioning module, an LCD displaying and photographing module, a GPRS wireless transmission module, a motor driving and controlling circuit, a wireless communication interface circuit, an ultrasound oscillation circuit and a robot driving circuit. The GPRS wireless transmission module utilizes the GPRS mobile communication network to realize the bidirectional transmission of information. The robot-transmitted data to the remote monitoring platform mainly contain the onsite image information and the current positioning information of the small vehicle. What the remote monitoring platform transmits to the small vehicle is mainly the instruction information to realize the remote control. The robot driving circuit is used to complete the driving of the modules in the entire process. The wireless communication interface circuit utilizes the PTR2000 wireless communication data receiving and transmitting module integrating the receiving and transmitting into one and suitable for duplex and simplex communications. Due to the flexible communications, the wireless communication interface circuit can be directly connected with the serial port mode of the single chip microcomputer. The system of the invention is simple in structure and convenient in control. With the system, remote intelligent control can be realized, making the system greatly innovative.

The invention discloses an atmospheric environment monitoring system based on the heterogeneous Internet of Things, which includes an atmospheric environment monitoring node, an intelligent gateway, a base station, a cloud, and a remote monitoring terminal sequentially connected by communication. The atmospheric environment monitoring node collects data on atmospheric environment parameters, The intelligent gateway realizes the communication connection between the atmospheric environment monitoring node and the base station, the base station realizes the communication connection between the intelligent gateway and the cloud, and the remote monitoring terminal performs data viewing and provides a window; a monitoring method based on the atmospheric environment monitoring system includes the following steps: S1 , configure the intelligent gateway; S2, configure the atmospheric environment monitoring node; S3, the atmospheric environment monitoring node collects the atmospheric environment parameters, and transmits to the remote monitoring terminal to realize the monitoring of the atmospheric environment; S4, receives the end signal, then ends the monitoring; the present invention It solves the problems of large monitoring blind areas, inability to accurately locate pollution sources in time, high investment costs, complex networks and poor stability existing in the prior art.

The invention provides a quick switching method and a quick switching system for an LED stage screen, and the method comprises the steps: setting a first screen interface and a second screen interfaceof an LED display screen, wherein the two screen interfaces have corresponding independent screen interface parameters and display contents, and the display contents of the first screen interface andthe second screen interface are different; in response to switching from the first screen interface to the second screen interface, identifying screen interface parameters and display content of thefirst screen interface, and packaging the screen interface parameters and the display content into a first screen interface data file in a specified format for storage; reading a second screen interface data file; in response to successful reading, closing the first screen interface; and displaying the second screen interface, and importing the analyzed display content and screen interface parameters in the second screen interface data file. According to the invention, free switching between a common screen and a stage screen can be realized on the same LED display screen, a special stage carddoes not need to be purchased, the communication mode is flexible, and the number of the screens is not limited.