5results about How to "High speed communication" patented technology

The invention discloses a vehicle braking noise measurement system and method based on an EtherCAT bus. The system comprises a power supply system, an EtherCAT controller, a signal acquisition system and a man-machine interaction system. The method comprises the steps that a brake pressure threshold PTh is set, the brake pressure Pb is set through the pressure sensor, and when Pb is larger than or equal to PTh, the controller collects sound pressure, vibration, temperature, pressure, environment temperature and humidity, vehicle speed and vehicle deceleration signals; when Pb is smaller than PTh, the controller stops collecting; the controller processes the collected sound pressure signal to obtain a peak value Lps and a frequency Fps of a sound pressure signal frequency spectrum; processing the four groups of collected vibration signals to obtain peak values and frequencies Fpv1, Fpv2, Fpv3 and Fpv4 of frequency spectrums of the four groups of vibration signals; if the Fps is the same as any one or more of the vibration frequencies, it is judged that braking noise is generated in the braking process. According to the invention, high-speed and efficient communication is realized through the EtherCAT bus technology, the data synchronization of each sensor is ensured, and the measurement precision is improved.

The invention provides a generator set controller historical record reading method and device and electronic equipment, and the method comprises the steps that a generator set controller distributes MODBUS addresses for historical record data, and the MODBUS addresses comprise the total number address, the currently read address and the historical record data content address; the upper computer reads the total piece number address through the MODBUS protocol and records the total piece number of the historical record data; the upper computer writes a serial number of the to-be-read address into the to-be-read address through the MODBUS protocol, wherein the serial number is a natural number between 1 and the total number of the to-be-read address; the generator set controller updates the data content corresponding to the serial number in the historical record to the historical record data content address according to the serial number written by the upper computer; the upper computer reads the updated historical record data content address through the MODBUS protocol and records the updated historical record data content; and continuing to read the next historical record, and repeatedly writing the sequence number and the following steps. The universality is high, and the maintenance cost is low.

In a method of receiving a binary data sequence from one or more mobile UEs, the binary data sequence is represented by an SCMA signal transmitted over an OTFS communication channel to at least two RRHs of a CoMP radio communication system, the RRHs communicatively connected to a common BBU and serving the one or more mobile UEs from different directions, a continuous time domain signal representing an SCMA signal transmitted from the mobile UE is received at each RRH. After removing a cyclic prefix from a received time domain signal, OTFS demodulation is performed on the received signal, and centralized or decentralized signal detection and recovery is performed on a two-dimensional arrangement of information symbols in the delayed Doppler domain, both of which perform an iterative Gaussian approximation expected propagation process on the information symbols. The detected symbols are de-mapped to recover the binary sequence of transmissions of the respective mobile UEs that have received the signal.

Embodiments of the present application provide a smart home network communication method and device, electronic equipment and readable storage medium, wherein the smart home devices in the smart home network communicate based on channels in the smart home network, and the method comprises: determining channel usage of channels in a specified channel range in the smart home network; collecting device information of the smart home devices in the smart home network; selecting a target channel from the channels according to the channel usage and the device information; performing channel aggregation on the target channel to form an aggregated channel; and controlling the smart home devices in the smart home network to communicate through the aggregated channel. Embodiments of the present application can improve the throughput of the smart home network.

The invention discloses a direct-current circuit breaker and a mobile computing circuit breaker non-fault side current clearing method, relates to the technical field of power electronics, and aims to solve the problem that the non-fault side current of a circuit cannot be quickly cleared in the prior art. The technical method provided by the invention comprises the step of introducing a mobile computing technology in a satellite network to solve the problem of eliminating non-fault-side current by a direct-current circuit breaker. On a satellite network, non-fault side current of each circuit breaker is calculated by using a mobile computing technology, and a clearing value of the non-fault side current is calculated. And then, transmitting the clearing value to the position of each circuit breaker, and carrying out current clearing through a control signal of the designed capacitor reusability direct current circuit breaker.