49results about How to "Simplified communication protocol" patented technology

Techniques whereby a transmitter/receiver pair are cooperatively arranged to buffer incoming data to both the transmitter and the receiver. The transmitter and receiver of the pair are coupled, generically, by pre-existing channel which has a known, fixed capacity. The transmitter/receiver pair exploits whatever delay is permissible, as determined by end-users of the data, for the data stream or streams that are using the channel for the purpose of accommodating periods of excessive instantaneous aggregate data transfer demands. The matched transmitter/receiver pair thereby permits (i) the transmission of a variable rate stream over a channel with capacity less than the peak rate of the stream, or (ii) the multiplexing of variable and/or fixed rate data streams.

The invention discloses a long-distance water environment monitor and monitoring method based on Zigbee and GPRS (General Packet Radio Service). The long-distance water environment monitor and monitoring method is to divide the water area needed to be monitored into a plurality of small monitoring areas, a plurality of secondary node modules and a main node module are configurated in each monitoring area and the secondary node module and the main node module in the whole monitoring area are connected in a star-like mode. A water quality parameter collecting module collects water quality parameters and sends the parameters to a second zigbee wireless communication module, the second zigbee wireless communication module sends the parameters to a first zigbee wireless communication module in a relay transmission mode through the zigbee protocol networking, ARM (Advanced RISC Machines) processer fuses and processes data and transmits the data to long-distance end network monitoring center through a GPRS module, the main node module controls the entrance and exit of the secondary node module and monitors the working condition of the secondary node module and the Zigbee and GPRS technology are combined to monitor the water environment in real time at the long-distance end.

The invention provides a multi-channel pulse amplitude analyzer, wherein, channels work independently for carrying out multi-channel relevance measurement to improve measurement real-time property, and the analyzer has the advantages of simplified structure and flexible expansion. The multi-channel pulse amplitude analyzer comprises a plurality of pulse peak detection circuits, a plurality of ADCs, a plurality of multi-channel data storage circuits, a network transmission module and a timing sequence control circuit, wherein, the pulse peak detection circuits work independently for receiving a multi-channel pulse signal, detecting arrival time of peaks and outputting a plurality of screening signals respectively; the ADCs work independently for starting up A/D conversion on the multi-channel pulse signal and outputting conversion data; the multi-channel data storage circuits receive the conversion data and carry out counting storage; the network transmission module reads and outputs storage data; and the timing sequence control circuit generates a timing sequence signal for controlling an operating timing sequence of the circuits.

The invention discloses a novel ocean iridium-satellite GPS beacon. A power control layer comprises a battery charging and discharging protective circuit, a 5V power voltage stabilizing circuit and a 3.3V power voltage stabilizing circuit; a circuit mainboard layer comprises an MCU circuit, a reset circuit, a high-speed crystal oscillator, a low-speed crystal oscillator, a JTAG debugging interface circuit, an iridium satellite module circuit, a Zigbee module circuit, an analog switch circuit, an AD voltage collection circuit and a water level monitoring circuit; a switch control layer comprises a solar charging and discharging controller, an LED control circuit and a water density knob switch; an antenna positioning layer comprises a power switch, an iridium satellite antenna, a Zigbee antenna, a GPS module, a water outlet detection switch, a charging port and a reset button; and a solar cell panel and LED layer comprises a solar cell panel and LED lamps. Functions including satellite positioning, wireless positioning, LED warning, real-time water outlet monitoring, charging of the solar cell panel and real-time electric quantity display are integrated in the novel ocean iridium-satellite GPS beacon.

The invention provides a dynamic differential positioning method based on mobile edge computing (MEC). The method comprises the following steps: dynamic differential positioning calculation modules are deployed on an MEC server; the MEC server receives regional differential correction values that are broadcast by a cloud computing platform in a real-time manner, wherein the cloud computing platform is based on a satellite navigation ground-based augmentation system; the MEC server receives observation data, which is based on a satellite navigation system, from a mobile terminal; the MEC servercarries out differential calculation according to the regional differential correction values and the observation data of the mobile terminal and through the dynamic differential positioning calculation modules so as to obtain a high-precision positioning result of the mobile terminal, and sends the high-precision positioning result to the mobile terminal; and the mobile terminal receives the high-precision positioning result from the MEC server. The method provided by the invention has the characteristics of millisecond-scale delays, large system capacity, high disaster tolerance, and high simplicity of a communication protocol.

The invention discloses a karaoke OK play and control method and a system; the play method is simple, convenient and stable and supports multiple-user concurrency; in the technical proposal, the karaoke OK play and control system comprises a set top box, a play and control server, a database server and a streaming server; wherein the set top box and the play and control server are communicated in a two-way manner, so as to transmit a song-switching request to the play and control server; data connection of the play and control server and the database server is built, after the song-switching request is received, the information of the next song can be obtained from the database server and returns back to the set top box; communication between the set top box and the streaming server is established; after the information of the next song is obtained, the streaming server pushes the corresponding data stream to the set top box.

The invention relates to a user-defined bus and an achievement method thereof. The method includes the steps that the bus comprising a back panel, a main panel, a transmitting panel and a plurality of receiving panels is set, a main control unit, a first programmable logic component, a first single chip microcomputer and a crystal oscillator are arranged in the main panel, a second programmable logic component and a second single chip microcomputer are arranged in the transmitting panel, a third programmable logic component and a third single chip microcomputer are arranged in each receiving plate, high-speed buses are arranged between the first programmable logic component and the second programmable logic component and between the first programmable logic component and the third programmable logic components and are used for transmitting real-time control data, reset signals, handshaking signals, reserved signals, bus clock signals and synchronous clock signals, low-speed buses are arranged between the first single chip microcomputer, and the second single chip microcomputer and between the first single chip microcomputer and the third single chip microcomputers and are used for transmitting initial signals or random detection signals. The user-defined bus can be widely used in magnetic resonance spectrometer systems.

The invention discloses a display method for an electronic screen of a refrigerator. The display method for the electronic screen of the refrigerator comprises the following steps of: determining the type of an application scene when the electronic screen detects that the application scene of the refrigerator occurs; when a screen awaking scene occurs, awaking the electronic screen and lighting the display screen; and when a non-awaking scene occurs, enabling the display screen of the electronic screen to be in an off state. According to the display method for the electronic screen of the refrigerator disclosed by the invention, energy consumption of the electronic screen can be reduced, and the service life of the electronic screen is prolonged. The invention further discloses the electronic screen of the refrigerator as well as the refrigerator provided with the electronic screen and a refrigerator system.

The invention belongs to the field of embedded systems, and discloses a dual-port peripheral configuration interface circuit. According to the interface circuit, only two IO interfaces are provided externally, one is an RCK (read clock) input port, and the other is an RDA (remote data access) data two-way port. A read-write data port, a read/write address signal port, and a read-write enable signal port are connected with a register set. The interface circuit comprises a clock counter, a read-write judging register, an address/data shifting register, a read data shifting register, an address register, a write enable signal generation register and a read enable signal generation register. The interface circuit disclosed by the invention has the advantages that the communication protocol and the circuit are simple, external ports are few, the communication speed changes with the rate change of an externally supplied RCK clock, an externally supplied system clock is not needed, and the like.

The invention discloses a smart kitchen ad-hoc network comprising a data acquisition device, an executing mechanism, an embedded module, an NRF2401 radio frequency module, an RF_WAN gateway module, arouter, a cloud platform server and a mobile APP. The NRF2401 radio frequency module completes data interaction between an internal sensor node of a kitchen and an RF_WAN gateway through an RF node; and after ad-hoc network completion, point-to-point communication and broadcast communication can be realized between the nodes and between the node and the gateway. The RF_WAN gateway is used for realizing data interaction between the ad-hoc network and the Internet. Internal kitchen data include data acquisition node state data and execution mechanism execution command data. Data exchange is carried out inside the kitchen by the ad-hoc network, so that the hardware cost is lowered; the internet resources are saved and isolation from the internet is realized; and the data safety is high.

The invention discloses a communication method for a parallel driving system. The method is used for an optical fiber communication network with multiple servo drivers connected in parallel. The network comprises a master node and N slave nodes, wherein each node corresponds to a servo driver; communication network ports and synchronous signal ports of the master node and the slave nodes are connected stage by stage for communication transmission of non real-time messages and real-time synchronous signals; the master node sends out a bus message and transmits the bus message to the slave nodes stage by stage; and each slave node extracts a switching signal of the master node from the bus message and inserts feedback message information of the slave node until the last slave node, namely, a network terminal node, returns a network terminal message containing the feedback message information of each slave node to the master mode. The method is simple in communication protocol, low in hardware cost and high in practicality; an accurate synchronous action is achieved; the communication network is more simplified in structure; the switching time delay compensation is accurate; and the method can be effectively used for communication of the parallel driving system.

The invention discloses a data transmission method, acquisition card and data transmission system based on a USB3.0 wire, and the method comprises the steps: carrying out the communication with a hostthrough a PCIE bus, receiving an acquisition instruction, and transmitting the acquisition instruction to specified sensing equipment through a USB3.0 high-speed signal line pair; two groups of overspeed signal line pairs of the USB3.0 wire communicating with specified sensing equipment and receiving data acquired by the sensor; and converting and analyzing the received data and transmitting thedata to the host through the PCIE bus. The USB 3.0 wire rod is used for overcoming the defects that in the prior art, main equipment is high in cost and difficult to popularize, the data transmissionspeed between a host and sensing equipment is increased to 10 Gb/s on the basis of an existing USB 3.0 wire rod, the cost of transmission equipment is reduced, and the applicability of the USB 3.0 wire rod to common equipment is improved.

The invention provides a bus network, a control system and a crane. The bus network comprises a bus, a main controller, a super-lift controller, a first terminal resistor, a second terminal resistor, a control switch and a third terminal resistor, wherein the main controller and the first terminal resistor are fixedly connected with the bus; the super-lift controller and the second terminal resistor are detachably connected with the bus; the control switch and the third terminal resistor are connected with each other in series and then connected with the bus, and are located between the main controller and the super-lift controller; when the super-lift controller is connected with the bus, the control switch automatically switches off; and when the super-lift controller and the second terminal resistor are disconnected with the bus, the control switch automatically switches on. According to the technical scheme provided by the invention, a communication protocol is simplified, the working amount of programming is reduced, and the problem that the communication of a network is cut off after a super-lift is detached can be solved.

The invention discloses a self-adaptively cascaded graph signal generation system. The graph signal generation system includes an upper computer, a master graph signal generation unit, at least one slave graph signal generation unit, and a cascade unit used for cascading the master graph signal generation unit and the at least one slave graph signal generation unit. The self-adaptively cascaded graph signal generation system can cascade a plurality of graph signal generators capable of acting independently into a set of graphic signal generation system having a multipath test signal output capability, the graph signal generation system can automatically identify a master-slave relation of graph signal generators participating in cascade according to the configuration state of an ID pin ofthe cascade unit, can customize the number of test signal output interfaces according to the number of the graph signal generators participating in cascade, and can provide the same graph, power supply and time sequence control signals required by a test at the same time for a plurality of display modules to be measured.

The invention discloses a power device linkage control method, system and device. The method is suitable for a linkage control system comprising a host and a plurality of slave devices, the host and the slave devices are connected in sequence to form a series structure which is started from the host and is ended at the last slave device, each slave device is connected with a power device, and a control signal sent by the host or the previous slave device is received; the control signal is processed and then is output to the power device connected with the current slave device, so as to controlthe power device connected with the current slave equipment; the control signal is sent to the next slave device, so that the next slave device processes the received control signal and then outputsthe processed control signal to a power device connected with the next slave device, and the control of the power device connected with the next slave device can be realized, and the communication protocol between the devices can be simplified, the anti-interference capability is enhanced, linkage control and expansion are convenient, implementation is easy, and cost is reduced.

The invention discloses a wireless communication system and method for micro-rail vehicle control, and the system enables a rail line to be divided into a plurality of sections through a positioning mark, a trackside communication unit is installed at the central position of each section, the reliable communication range covered by the trackside communication units is a communication section, andeach communication section is provided with a communication channel. The communication channels of the adjacent communication sections are different, the trackside communication units are connected through a field bus, a vehicle-mounted communication unit is installed on the carriage, the vehicle-mounted communication unit establishes connection with the trackside communication units by switchingthe communication channels, and the trackside communication units allocate communication addresses to the vehicle-mounted communication unit. And the trackside communication units exchange data with the vehicle-mounted communication unit in turn in a time-sharing manner to realize information interaction between the trackside communication unit and the vehicle-mounted communication unit. The problems that existing micro-rail vehicle communication is prone to interference, and real-time performance and safety cannot be guaranteed are solved.

The invention discloses a method for simply and wirelessly matching a computer and a remote USB (universal serial bus) peripheral. The method comprises the following steps of (1) establishing a wireless protocol simple bridging physical structure: respectively connecting a pair of wireless transmitter and wireless receiver onto a computer USB port and a USB port of a remote USB peripheral; (2) realizing the data transmission and receiving between the computer and the computer remote USB peripheral on the basis of a transmission protocol stack comprising a computer application layer, a device drive layer, a USB protocol layer and the remote USB peripheral. In the method, the wireless receiver-transmitter is only used as a relay, so that the peripheral is equivalent to the wireless peripheral device of the computer; all USB signaling and data are carried by the wireless protocol, the data relay is transparent through the matching conversion of a USB logic passage and a wireless logic passage, and all signaling and data can be nondestructively and directly transmitted through the wireless protocol. By adopting the method, few protocol stack layers are needed, the communication protocol is simplified, and the high-speed wireless transmission between the computer and the remote USB peripheral can be realized.