35results about How to "Easy to optimize and improve" patented technology

A system for monitoring dangerous behaviors of escalator passengers based on visual analysis, including a video access module, an intelligent data acquisition module and a cloud platform. The intelligent data acquisition module includes a video acquisition module, an algorithm calculation module, and a video stream storage module; the video stream storage module collects The video stream data of the video access module, and transmit the video stream data to the algorithm calculation module. The algorithm calculation module analyzes and calculates the collected video stream data to obtain the analysis results, and stores the analysis results in the video according to different data contents. Stream storage module and cloud platform. The present invention proposes a system and method for monitoring dangerous behaviors of escalator passengers based on visual analysis, which can accurately identify the behaviors of people and objects on the escalator, and make early warnings to achieve the function of reminder and prevention, and reduce the occurrence of escalator accidents.

The technical scheme provides a modular and dismountable movement mechanism for a linear multidigit ionization chamber, which comprises a guide shaft fixed on a bottom board, a limit lever assembly, a microswitch, a load frame capable of making linear displacement with a transmission rack, a limit lever, a pressure spring, the ionization chamber arranged on the load frame and the like. The limit lever assembly comprises a positioning bearing, a universal rotating head, a torsional spring, a torsional spring connecting rod and the like; and a limit slot is formed on the limit lever fixed on the load frame. When the positioning bearing just moves to a slope of the limit slot and does not stop in the limit slot, the microswitch corresponding to the limit slot is pressed, a motor stops operating, and the torsional spring and the pressure spring push the load frame with the ionization chamber together to continue to move, so that finally the positioning bearing slides into the limit slot completely, the load frame stops moving, and a station is adjusted in place. The mechanism is arranged below a turnplate of a beam flattening filter of an accelerator to measure the intensity of radiation passing through the flattening filter, and is convenient to overhaul.

The present invention relates to the field of electronic tests, in particular to a high-precision multichannel analog signal source which meets the requirement for an analog signal source in the current field of electronic tests. The analog signal source comprises a logic control unit, a memory and a waveform output circuit, wherein the waveform output circuit comprises a D / A converting circuit, a signal conditioning circuit, a multichannel change-over switch and a plurality of paths of analog signal output modules; and a recovery test circuit is arranged between the output end of the waveform output circuit and the logic control unit. The invention can independently output waveform analog signals, such as direct current, rectangular waves, and the like and provide high-precision analog signals in various waveforms for a performance test of a tested device; the output precision of the direct current signal can reach + / -0.0.5 percent FS and the establishing time of the rising edge of the rectangular wave is smaller than 200ns, thereby meeting the requirement during carrying out a channel bandwidth test on high-end electronic products, such as a telemetering programming device and other aerospace telemetering equipment; and the high-precision multichannel analog signal source of the present invention also has the advantages of simple and reasonable structure, stable performance and high validity and reliability of the signals.