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Combined type bionic quadruped robot controller

The invention relates to a combined type bionic quadruped robot controller, which is in a structure similar to a vertebrate nervous system, wherein the controller is divided into a decision layer, a planning layer and an execution layer which respectively correspond to a higher nervous center, a lower nervous center and a motor nerve of an animal. The decision layer for realizing that the robot senses the working environment and generates corresponding motion decision instructions consists of an ARM9 (advanced RISC (reduced instruction-set computer) machine 9) and an environmental information acquisition system, and a real-time operating system is embedded in the ARM9. The core of the planning layer is a walking pattern generator, and is used for planning and solving the motion parameters of each joint according to the decision instructions from the upper layer. The execution layer for controlling the current, the position and the speed of a driving motor in three closed loops consists of a motor controller using a digital signal processor as the core. Data can be effectively transmitted among the three layers in real time through a dual-port RAM (random-access memory) and a CAN (controller area network) bus network. The combined type bionic quadruped robot controller disclosed by the invention has the characteristics of high reliability, high flexibility, extension easiness and maintenance easiness, and has a broad application prospect in the technical field of bionic legged robots.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Network television direct broadcasting system

The invention provides a network television direct broadcasting system. The system comprises a streaming media signal acquisition server, a streaming media signal receiving server and a streaming media content transmitting server, wherein the streaming media signal acquisition server is used for acquiring the original streaming media signal from a program signal source in real time and generating a streaming media direct broadcasting file by coding; the streaming media signal receiving server is used for acquiring the streaming media direct broadcasting file from the program signal source in real time and buffering streaming segments; the buffering of the streaming segments is to establish an index for each key frame of the streaming media direct broadcasting file; and the streaming media content transmitting server is used for acquiring the streaming media direct broadcasting file from the streaming media signal receiving server and transmitting the streaming media direct broadcasting file to a network player for playing in real time. The system has the functions of direct broadcasting, playback, multi-screen signal acquisition, code optimization, multi-rate coding, automatic cutting, multi-packet transmission and the like.
Owner:CHINA DIGITAL VIDEO BEIJING

Video stream push control method and device and video stream director end

The invention relates to the field of video live broadcast and specifically relates to a video stream push control method and device and a video stream director end. The method comprises the following steps of receiving inner network video streams sent by push ends to a local area network stream push address configured to the director end, wherein the director end and the push ends are located in the same local area network; generating an outer network video stream according to the inner network video streams; and sending the outer network video stream to a director server through a public network, thereby sending the outer network video stream to a live broadcast platform through the director server. Multichannel inner network video streams pushed by the push ends are received by an inner network server built in the director end, the inner network video streams are synthesized into the outer network video stream, and the outer network video stream is pushed to the director server, wherein the push ends and the director end are located in the same local area network. Outer network bandwidths are prevented from being occupied repeatedly, moreover, an occupation rate of uplink bandwidths of an outer network can be reduced, loads of the director server is further reduced, the live broadcast fluency of a video is ensured, and the definition of video images is improved.
Owner:GUANGZHOU HUADUO NETWORK TECH

Automatic steel ball screening and packaging machine

The invention relates to an automatic steel ball screening and packaging machine. The automatic steel ball screening and packaging machine is characterized by comprising a rack, an emptying box, a screening and filtering track and a weighing platform; the emptying box is obliquely placed at the left end of the rack; the screening and filtering track is divided into a preliminary selection track, a screening track, an oil spraying track and a material discharging track; the screening and filtering track and the upper plane of the track form an included angle with an oblique angle of 5 degrees-8 degrees; a groove is formed in the weighing platform; a screening mold is clamped and buckled in the screening track; the screening mold is divided into spacing plates in upper and lower rows, and intervals of the upper spacing plates are greater than intervals of the lower spacing plates; and steps which are oblique downward by 5 degrees are formed at two sides of the lower spacing plates. An intelligent control system is adopted for the device, and the device is controlled integrally by a control box and rolls automatically for the steel balls are spherical; the screening mold has three output tracks and can detect steel balls which are completely fit for the standard, and finally the steel balls are weighed, measured and packaged by the weighing platform; and the working efficiency is high, and the labor and energy sources are saved.
Owner:辽宁宝瑞科技有限公司

Image compression method and device

The embodiment of the invention relates to an image compression method and an image compression device. The method concretely comprises the following steps that: a network crowding degree of an image transmission network is detected, the available transmission rate for image transmission of the transmission network is calculated according to the network crowding degree, the data quantity threshold of single frame images transmitted by the transmission network is calculated according to the available transmission rate, when the data quantity of the transmitted images is greater than the data quantity threshold of the single frame images, a specific region or a non-specific region in the images is identified, and the specific region and the non-specific regions in the images are compressed according to different compression ratios and are then transmitted. Therefore, the method and the device disclosed by the embodiment of the invention have the advantages that when the data transmission environment is poor, the distinguishing processing on the specific region and the non-specific region of the images is realized, the definition of the specific region of the images received by users is improved, and meanwhile, a certain smoothness degree can also be ensured.
Owner:HUAWEI DEVICE CO LTD

Remote maintaining and monitoring system for GYK

The invention provides a remote maintaining and monitoring system for a GYK. A hardware system of the remote maintaining and monitoring system comprises a user terminal, a server and a vehicle-mounted device, wherein the user terminal and the vehicle-mounted device are connected with the server through a communication link, the vehicle-mounted device comprises a vehicle-mounted main unit, the GYK, a GYK DMI and a remote control GYK, the vehicle-mounted main unit is used for receiving information uploaded to the server by the user terminal and sending vehicle-mounted updating information to the server, the GYK is used for receiving data transmitted by the vehicle-mounted device main unit through RS422, the GYK DMI is used for receiving data transmitted by the vehicle-mounted device main unit through a CAN bus, sending a sound-light alarm prompt message and displaying the current state of the updating data information and the content of notice information, and the remote control GYK is used for upgrading updating data, releasing a train order and sending the updating data and the train order to the GYK through a USB communication bus. According to the remote maintaining and monitoring system for the GYK, vehicle-mounted car traveling control over the GYK and upgrading of a DMI control program are achieved, and smoothness, reliability and safety of data transmission are improved.
Owner:西北铁道电子股份有限公司

Live broadcast assistant audio/video processing method and device for

The invention relates to the technical field of the Internet and discloses a live broadcast assistant audio/video processing method and device. The method comprises the steps of collecting anchor audios, background music and special effect audios through a live broadcast assistant audio/video application, carrying out audio processing and integrating the anchor audios, the background music and the special effect audios into an audio stream; collecting live broadcast images through the live broadcast assistant audio/video application, carrying out image processing to generate a video stream; aligning time stamps of the audio stream and the video stream to generate an audio/video stream data packet; and transmitting the audio/video stream data packet to a live broadcast application through a cross-process communication channel. The audios in the live broadcast process are effectively integrated into the audio stream, the time stamps of the audio stream and the video stream are aligned, the audio stream and the video stream are transmitted to the live broadcast application, various audios in the live broadcast process are prevented from mutual interference, and the fusion effect of the live broadcast application for the audios in the live broadcast process is relatively good.
Owner:广州方硅信息技术有限公司
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