7results about How to "Guaranteed transmission reliability" patented technology

The embodiment of the application provides a kind of data transmission method, system of vehicle, vehicle and readable storage medium, the method comprises: the functional data stream of vehicle is collected, wherein, functional data stream is used to execute the driving control function of vehicle;Based on the data type of functional data stream, the data transmission strategy of functional data stream is determined, wherein, data type is used to characterize driving control function and vehicle's driving safety performance is associated, or, driving control function and vehicle's operation performance is associated, data transmission strategy is used to characterize the rule of transmission functional data stream by different data transmission channel;According to data transmission strategy, functional data stream is transmitted to cloud, wherein, functional data stream is aggregated by cloud according to the data type of functional data stream, and the running state of vehicle is used to make remote cockpit determine aggregated functional data stream.The application solves the technical problem of low communication reliability of vehicle in the related art.

This invention relates to the field of smart meter communication data acquisition technology, and discloses a method for anti-interference data acquisition in smart meter communication based on multi-carrier modulation technology. The method includes using multi-carrier modulation to perform frequency division processing on the signal during data transmission, combining channel state perception and dynamic subcarrier allocation strategies to avoid interference frequency bands in real time, and enhancing data robustness through time-frequency joint coding. This application can effectively suppress narrowband interference and impulse noise, improving the communication reliability and data acquisition accuracy of smart meters in complex electromagnetic environments.

This invention belongs to the field of mine safety monitoring technology, specifically involving an intelligent management system based on miners' positioning data processing. The system includes a wearable precision inertial measurement device, a multi-source data fusion gateway, an underground wireless transmission network, a biomechanical feature extraction server, a behavioral quality evaluation management platform, and a multi-dimensional early warning terminal. The wearable device collects high-frequency motion vector data of miners in real time, performs preliminary noise reduction using the gateway, and the server establishes a gait cycle segmentation model to accurately extract gait feature parameters such as stride length, ground contact time interval, and body center of gravity oscillation frequency. This invention realizes a shift from simple spatial location monitoring to in-depth monitoring of biological signals and behavioral quality, filling the monitoring blind spots caused by passive displacement and improving the proactiveness of mine risk early warning and the accuracy of safety supervision.

The application provides a power control parameter determination method and device and a terminal device, and relates to the technical field of communication. The method is executed by a terminal device and comprises: determining a control parameter for power control of a physical uplink control channel (PUCCH) according to a first parameter; wherein the first parameter is the number of bits of a hybrid automatic repeat request acknowledgement (HARQ-ACK) that is bundled in the case of multiple physical downlink shared channels (PDSCHs) being scheduled by one downlink control information (DCI). The above scheme improves the acquisition scheme of the control parameter for power control of the PUCCH in the case of multiple PDSCH transmission scheduling, and can save the power consumption of the terminal for signal transmission while maintaining transmission reliability.

The invention relates to the technical field of network communication optimization, and provides a communication method and device. The method comprises the steps that under the condition that it is monitored that data to be sent exist, a first serial receiving and sending module in first equipment is started, first notification information is sent to second equipment, the first notification information is used for indicating to start a second serial receiving and sending module in the second equipment, and under the condition that second notification information sent by the second equipment is not received, the second serial receiving and sending module in the second equipment is started. And storing the received data in a first cache unit in the first device according to the second notification information, the second notification information being used for indicating that the second serial transceiver module is started, and sending the received data and / or newly received data to the second device when the second notification information sent by the second device is received. According to the communication method provided by the invention, the received data is temporarily stored through the first cache unit, parallel processing of data buffering and link establishment is realized, and the problem of data loss caused by unready opposite equipment is effectively avoided.

The utility model discloses a kind of reel transmission structures, it is related to reel transmission technical field, including driving sprocket and driven sprocket, the driving sprocket and driven sprocket are arranged in parallel, driving sprocket and driven sprocket are tensioned and provided with synchronous belt, the side coaxial fixed with one reel of driving sprocket, the same side coaxial fixed with two reels of driven sprocket, the wheel rim of one reel and two reels is evenly distributed with pin column convex column, the upper level of one reel and two reels is provided with flow channel plate, the flow channel plate is fixed in machine tool workstation by bolt mounting mode. The utility model is ensured that product can be strictly conveyed according to preset path and position by the cooperation of pin column convex column and product round hole, realizes accurate step type conveying.

The invention relates to the Internet of Things technology, in particular to an Internet of Things data interaction method and system based on MQTT and a readable storage medium, and the Internet of Things data interaction method based on MQTT comprises the steps that a device end reports a file transmission request to a cloud platform end through an MQTT file uploading theme, at least assigning an initial fragment size, a total file size and a verification value in the file transmission request; when the cloud platform end monitors the file transmission request, the cloud platform end verifies the device end and then issues a fragment transmission strategy to the device end through the MQTT dynamic theme, and the fragment transmission strategy at least comprises the fragment size dynamically adjusted by the cloud platform end according to the network condition; the device end uploads file fragments to the cloud platform end according to a fragment transmission strategy issued by the cloud platform end and a fragment index sequence, and informs the cloud platform end after transmission is completed; and the cloud platform end verifies the transmission condition after receiving the transmission completion notification of the equipment end, and returns a transmission result to the equipment end through the MQTT response theme.