35results about How to "Improve Communication Accuracy" patented technology

A wireless communication system wherein the higher the priority level of an information signal to be transmitted by a slave unit, such as an operating switch, is, the shorter the time period (t1) of a carrier sense to be performed before the transmission of the information signal is caused to be. In this way, even when slave units are about to transmit information signals of mutually different priority levels by use of the same time slot, one of the slave units being about to transmit an information signal having the higher priority level than any other slave unit is allowed to cause the time period (t1) of a carrier sense, which is to be performed before the transmission of the information signal, to be shorter than any other slave unit, so that the one slave unit can transmit the information signal earliest. Thus, the slave unit that becomes able to transmit the information signal earliest is caused to transmit the information signal, thereby allowing the information signal having the highest priority level to be transmitted earliest, while causing each of the other units to detect that transmission by use of the carrier sense, thereby causing the other unit to defer the transmission of the information signal.

The present application provides a communication method and related devices. First, the user equipment receives the first message / data frame of the first wireless communication device to determine the first level of arrival of the user equipment relative to the first wireless communication device Phase difference; then, query the mapping relationship table to obtain the first horizontal arrival angle range corresponding to the first horizontal arrival phase difference, the mapping relationship table includes the corresponding relationship between the horizontal arrival phase difference and the horizontal arrival angle range, the first A horizontal angle of arrival range is used to indicate the angle range to which the angle of arrival of the user equipment relative to the horizontal direction of the first wireless communication device belongs; finally, the first horizontal angle of arrival range is within a preset angle of arrival range , establishing a communication connection with the first wireless communication device. Interference caused by user equipment posture can be eliminated, which improves communication accuracy and greatly improves user experience.

An intelligent aroma volatilization system includes: a sensing device, a control center, a volatilizer, a user terminal, and a cloud; the sensing device is used to collect and extract environmental parameter information that affects volatilization and volatilization state in the external environment, and convert it into electrical The signal is transmitted to the control center; the control center controls the volatilization according to the user's input command at the user end and the volatilization environment information transmitted by the sensor device in combination with the historical control information in the cloud and user behavior habits. device, and transmit the operating status of the system to the client; the volatilizer, receiving the control signal from the control center, controls the multi-dimensional volatilization of aroma. The present invention is controlled by the mobile terminal, and the ultimate goal is to produce a high-end smart home device that can simulate various scenes. The main function is to simulate the smell, so as to achieve the sensory similarity of the environmental atmosphere and the similarity of the components of the health care function.

The invention relates to the technical field of wireless communication and particularly relates to a spatial characteristic estimation method based on a fast marching method. A signal transmitting source transmits a signal, a signal receiving node receives the signal, and the signal receiving node analyzes the received signal and extracts real transit time between the signal transmitting source and the signal receiving node. The fastest marching path between the transmitting source and the receiving node is searched in a coordinate system with the use of the fast marching method, simulation transit time between the transmitting source and the receiving node is calculated, and meanwhile, the simulation transit time is approached to the real transit time through iteration of an algebraic reconstruction method so as to obtain the spatial characteristics of each coordinate point on the fastest marching path. According to the invention, by making use of the ideas of the fast marching method, estimation and planning of a fast path in an environment are realized, and moreover, the spatial characteristics of a path are estimated by making full use of relevant TOF and speed distribution information acquired in path estimation so as to obtain an environment model, thus improving the accuracy of estimation on communication situation in an unknown environment.

The invention provides an intelligent heat dissipation monitoring system for a box-type substation, comprising: box-type substations arranged in each power supply area and power distribution area and a substation server communicating with the box-type substation; the substation server obtains the status of each box-type substation in real time information, and judge whether the temperature and humidity information inside each box-type substation, the temperature information of the transformer and the temperature information of each electrical equipment are running within the preset threshold range; , control the operation of the environmental adjustment device, so that the box-type transformer operates within the threshold range. Set the communication mode according to the environment where the substation is located and the monitoring needs to avoid interference from the external environment, which will affect the remote communication of substation data and the communication of control instructions. Improve communication accuracy and timeliness. Avoid affecting the stable work of power supply and distribution, and affecting the power consumption status of the power supply and distribution area.

The invention discloses a high-time-accuracy large-spatial-channel synchronous acquisition system. The high-time-accuracy large-spatial-channel synchronous acquisition system comprises a signal acquisition unit and a plurality of communication nodes, wherein the signal acquisition unit is respectively connected with the communication nodes; the signal acquisition unit comprises a first FPGA module, a signal acquisition module and a signal processing unit, and the first FPGA module is respectively connected with the signal acquisition module and the signal processing unit; the first FPGA module comprises a data packing unit and a clock receiving and processing unit; the communication node comprises a second FPGA module, the second FPGA module comprises a UTC restoring unit, a PPS restoring unit, a DDMTD reference signal restoring unit and a precise time delay adjusting unit; and the UTC restoring unit is connected with the data packing unit, and the PPS restoring unit, the DDMTD reference signal restoring unit and the precise time delay adjusting unit are connected with the clock receiving and processing unit. By adopting the high-time-accuracy large-spatial-channel synchronous acquisition system, the channel measurement accuracy can be improved, and the time synchronous accuracy of the channel measurement is increased from 100ns to a sub-ns scale.

An intelligent control method for fragrance volatilization, comprises the steps of 1 measuring environmental parameter information that influences volatilization and volatilization state in outside environment through a sensing device; 2 adjusting fragrance concentration and volatilization mode of the system volatilization through a user terminal; 3 converting the environmental parameter information measured in step 1 into a data signal and then transmitting the data signal to a control center; calculating the volatilization rate of a required volatilization device based on the fragrance concentration information analysis result by the control center, and if the system is networked during the period, the control center will obtain data from the cloud and perform fine tuning to the volatilization rate based on the habit in history of the user; 4 checking if the volatilization device switch is locked or not by the control center, and if yes, a monitor shows the user error. A mobile terminal is used for controlling; a high-end intelligent household apparatus that can simulate a plurality of scenes is provided; main functions like smell simulation is provided; and sense organ similarity and health care function component similarity of the environment atmosphere are realized.

The invention discloses a data concentrator and an application method for a dual-network complementary charging pile in a public community, including a main control board, an LED display screen, an uplink communication module, a downlink communication module, a storage module, a smart meter, a keyboard, an input and output Processing module, LED indicator light and equipment maintenance port, the LED display screen, uplink communication module, downlink communication module, storage module, smart meter, keyboard, input and output processing module, LED indicator light and equipment maintenance port are respectively connected with the main The control board is connected; the data concentrator uses a micro-power wireless module to communicate with the charging piles in the community, which saves the communication fee of each charging pile, reduces the communication expenses in the entire electric vehicle operation network, and reduces the need for direct access to electric vehicles. The communication link in the background of the operation management system improves the running speed of the system background.

A communication method and communication device based on NB-IoT and LoRa, which relate to the field of communication technology, are proposed in order to improve the transmission distance and reduce the operating cost of the wide-area information monitoring system. The master node judges whether it has received the LoRa frame data from the child node. If the master node receives the LoRa frame data from the child node, it will store it in the receiving buffer area, and read the frame data effectively according to the improved LRU algorithm. Store the valid data after reading into the sending buffer; report the data in the sending buffer to the server through NB-IoT, and judge whether it is connected; if it is connected, send the data in the sending buffer to the server; if it is not connected, return to the receiving starting point . The sub-node hardware system is used to realize sensor information collection and LoRa communication; the main node hardware system is used to realize LoRa communication, NB‐IoT communication, sensor information collection, and LCD screen display. The present invention can simultaneously integrate LoRa and NB-IoT communication protocols.

The invention discloses charging piles for wireless carrier dual-network complementation of public communities and the application method thereof. The charging piles comprise main control boards, opening-in and opening-out processing modules, measurement processing modules, printing modules, intelligent electric meters, keyboards, CAN data interfaces, intelligent card reading-writing modules, cameras, LED display screens and communication modules. The application method solves the problem that the large scale of charging piles are accessed in an electric vehicle background in the public communities. Through the application method, the data interaction can be implemented between the charging piles and the electric vehicle background through two free communication methods of radios and carriers, so that the expensive communication cost is reduced, and the influence to the communication quality from peripheral interference sources or other same-frequency-band wireless signals is effectively avoided.