31results about How to "Work in real time" patented technology

The invention discloses a single-frequency network radar multi-target tracking method. The method comprises a measurement interconnection module and a sequence tracking module. The measurement interconnection includes selecting a certain number of measurement and sending-receiving pairs to build low-dimensional association assumptions for association, quickly determining all of the association assumptions to remove incorrect association assumptions as for as possible, sorting association assumptions accepted in the last step, and solving to obtain second measurement after measurement interconnection on the basis of an overall association 0-1 integer programming model built according to sorted data in a single-frequency network. The sequence tracking is achieved based on the second measurement through Kalman filtering. The single-frequency network radar multi-target tracking method can be used for solving association fuzziness of measurement, a transmitting station and a target of a radar in the single-frequency network, greatly reduces the computation complexity by combining a heuristic method and an optimization model, achieves the multi-target tracking performance close to the known case of the association relationship and has popularization and application values.

The invention requests to protect a small-size distributed network clock synchronization system based on a field programmable gate array (FPGA), which relates to the distributed network synchronization technique. The synchronization system comprises a PC, a HUB and a distributed unit based on the FPGA; each distributed unit is provided with a general network interface; the fixed synchronization cycle time proposal is adopted to realize the clock synchronization of the small-size distributed network, enabling the system to reach the microsecond grade synchronization. The synchronization mode adopted in the small-size distributed network clock synchronization system is similar to the mode of the IEEE1588 standards; based on the high accuracy synchronization property of the IEEE1588 standards, the initial synchronization speed of the synchronization system is improved so that a distributed system which has the advantages of high initial synchronization speed and high accuracy clock synchronization is realized. The network clock synchronization system provides each composite unit of the distributed network system with synchronization clock used as the reference of the working clock ofthe system; thereby, the small-size distributed network clock synchronization system is applicable to the distributed network which has high real-time requirement for data transmission.

The invention provides an air pollutant source apportionment sampling system and an air pollutant source apportionment sampling method. The system comprises a mainframe box, a particulate matter cutting and complementing device, a fume preprocessor, a ground settlement particle sampling device, a triangle bracket and a connecting pipe, wherein the mainframe box is provided with a flow controller. A co-sampling mode is provided for the source apportionment of a plurality of sampling environments, and an apparatus and a sampling method capable of acquiring particulate matter sample in a constant emission source, in air and on the ground are provided by the invention; the system and the method are extremely wide in application, high in sampling efficiency and capable of providing powerful support for the analysis of pollutant component and content.

The invention relates to a thermal management control method for a multi-energy source fuel cell vehicle. Fuel cell vehicle thermal management system includes fuel cell subsystem, battery subsystem, supercapacitor subsystem, heat exchange subsystem and post-processing subsystem. The control method is based on the output current, output power and coolant outlet temperature of the fuel cell, storage battery and supercapacitor, and the heat required by the passenger compartment, in extreme cold mode, small cycle, medium cycle, large cycle and extreme heat mode Switch between thermal management system control methods. In each of the above modes, the controller of the thermal management system realizes the optimal efficiency of the power source by controlling the flow of coolant passing through each subsystem, and considers the fast response characteristics of the power source in a low temperature environment, thereby improving the economy of the fuel cell vehicle And fast response performance in low temperature environment.

The invention discloses an asynchronous processing method and device based on a neural network accelerator. The method includes: generating an asynchronous request through a main thread according to algorithmic business requirements, generating a corresponding handle number, and generating a set of command words according to the generated business request, Join the command word queue, query the command word queue, if there is only one set of command words at present, set the set of command words to the execution state, start the hard core of the neural network accelerator, otherwise set the set of command words to the initial state and return. After the execution of the hard core, a hardware interrupt is generated and a soft interrupt is started, and the command word queue is queried. If there is a command word, it is taken out from the queue, and whether it is in the initial state is judged. If yes, it is set to the execution state and the hard core is started. Character. The main thread queries whether the hard core of the operation is completed according to the handle number. The above operation realizes the asynchronous operation process of multiple network algorithms, and handles asynchronous operations through hard core interrupts, which accelerates network performance and reduces processor bandwidth occupation.

The invention discloses a monitoring system for abnormal conditions in an elevator car, comprising at least one 3D somatosensory photography device arranged in the elevator car, and the 3D somatosensory photography device sends the collected original sensing data stream to a signal processing device; The signal processing device judges whether the passenger's behavior is abnormal or whether the passenger is in a dangerous state; when the signal processing device determines that the passenger's behavior is abnormal or the passenger is in a dangerous state, it sends an indication signal to the emergency processing device. The present invention is based on 3D somatosensory photography technology, which can not only enable passengers in accidents to be rescued in time, but also reduce the difficulty of rescue of trapped persons, and at the same time reduce and prevent the occurrence of violent incidents among passengers in the elevator car. The invention also discloses a method for monitoring abnormal conditions in the elevator car.

The invention discloses an intelligent portable multifunctional cervical spondylosis treatment instrument, comprising: a host and a controller, the host has a central processor, and the central processor is connected with a D / A conversion module, an A / D conversion module, a Coupling circuit, diode display system status circuit, data storage circuit; the host is connected with a motor driver, overcurrent, overvoltage protection circuit, and a stepper motor; and the stepper motor controls the expansion and contraction of the traction rope, which is equipped with a micro pressure The sensor and the traction rope are connected to the neck collar set on the traction bracket, and the central processing unit adjusts and controls the working state of the stepping motor according to the signal change of the sensor; The stimulation signal output circuit and the output circuit of the ion drug introduction treatment unit; the host has rehabilitation prescriptions and prescription libraries, and is also equipped with an RS232 serial port connected to the PC. The present invention integrates traction, intermediate frequency therapy and multi-functions; it has the characteristics of intelligent program control, multi-function selection, convenient operation and good curative effect.