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74results about How to "Meet quantity requirements" patented technology

UWB-based positioning device and railway station children positioning method

The invention relates to the field of indoor positioning and aims at solving existing problems in the prior art. The invention provides a UWB-based positioning device and a railway station children positioning method. Based on the UWB technology, the position positioning is carried out. Based on the UWB positioning system of an extensible base station, the high-precision positioning of children in a large range can be realized. Therefore, children can be effectively prevented from getting lost. The positioning system is mainly used for positioning children in a waiting room. According to the invention, a positioning label sends the positioning information to a base station unit in real time within the detection range of the base station unit. The base station unit establishes a coordinate system based on the mutual positioning of a main base station and an auxiliary base station, measures the real-time distance of the positioning label corresponding to the positioning information sent by the positioning label in communicant with the base station unit, and transmits back the obtained real-time distance information to a monitoring terminal. The monitoring terminal analyzes the positioning position of the corresponding positioning label according to the distance information uploaded by the base station unit. If the positioning position of the positioning label exceeds a threshold value range, an alarm signal is sent out.
Owner:SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP

Preparation method for improving yield of umbilical cord derived mesenchymal stem cell primary cells

The invention relates to the technical field of cell culture and cell separation and in particular discloses a preparation method for improving the yield of umbilical cord derived mesenchymal stem cell primary cells. On the basis of culturing and separating mesenchymal stem cells on a traditional Wharton's jelly tissue block in a disposable adherence manner, Wharton's jelly tissue blocks are finely collected at different time of a later period of culture and are repeatedly adhered; P0 generation mesenchymal stem cells can be continuously collected at different time. According to the method provided by the invention, the utilization rate of Wharton's jelly is maximized through a property that the mesenchymal stem cells continuously move out from Wharton's jelly tissues to grow; compared with Wharton's jelly tissue block disposable adherence culture, the obtained quantity of the P0 generation mesenchymal stem cells can be increased by two times at least; the culture density of the mesenchymal stem cells, the concentration of serum replacements in a culture medium and the culture time are subsequently controlled; when the cells are sub-cultured to a P3 generation, the obtained cell quantity can completely meet the requirements of cell storage and clinical transplantation.
Owner:北京中科易微生物科技有限公司

Glass accurate engraving machine

The invention discloses a glass accurate engraving machine. The glass accurate engraving machine comprises a base, a gantry type supporting frame stretching across the two sides of the base, at leasttwo sets of glass processing mechanisms arranged on the gantry type supporting frame and processing platforms arranged on a table face of the base and corresponding to the glass processing mechanismsin a one-to-one manner; the at least two sets of glass processing mechanisms are arranged side by side independently in the span direction of the gantry type supporting frame, each glass processing mechanism comprises an X-axis transmission mechanism arranged on the gantry type supporting frame and a Z-axis transmission mechanism arranged on the X-axis transmission mechanism and provided with a processing main shaft; Y-axis transmission mechanisms used for driving the processing platforms to move in the Y-axis direction are arranged between the base and the processing platforms; and the glassaccurate engraving machine further comprises a mechanical arm arranged on the peripheral side of the base and used for conducting feeding and discharging for the at least two processing platforms. Bymeans of the glass accurate engraving machine, the glass product manufacturing cost can be effectively reduced, the production efficiency of the glass accurate engraving machine is further improved, and the market requirements are met.
Owner:SHENZHEN CREATE CENTURY MACHINERY

Digital low-level control processor capable of flexibly configuring clock frequency

The invention provides a digital low-level control processor capable of flexibly configuring the clock frequency. The processor comprises a multi-path high-speed analog-digital conversion channel, a multi-path high-speed digital-analog conversion channel, a multi-path digital output port, a digital signal processing chip and a clock distribution system. The clock distribution system is used for providing clock signals for the digital signal processing chip and comprises a clock distribution chip and a CPLD chip. The clock distribution chip is used for sending clock signal to the digital signal processing chip according to input reference signals and configuration parameters of a clock distribution chip register, and the CPLD chip is used for setting configuration parameters and storing the configuration parameters. The digital low-level control processor capable of flexibly configuring the clock frequency integrates the clock distribution unit having a register parameter automatic response function and a multi-path fan-out function, the multi-path high-speed analog-digital conversion channel, a two-path high-speed digital-analog conversion channel and the multi-path digital output port, and has the advantages of being small in size, stable, reliable, economical and convenient to maintain.
Owner:SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI

Information real-time interaction terminal based on embedded system

The invention discloses an information real-time interaction terminal based on an embedded system. The information real-time interaction terminal comprises a CPU main control module, an SPI expansioncommunication module, a level conversion module and a power management module. The CPU master control module comprises a core processor AM3358, a reset circuit, a clock circuit, a download circuit, aFLASH circuit and an SDRAM circuit. The AM3358 is provided with six configurable serial ports and two high-speed SPI interfaces, the CPU main control module is connected with the SPI expansion communication module through a high-speed SPI interface, and the SPI expansion communication module converts an SPI signal into a serial port signal and transmits the serial port signal to the level conversion module; the CPU main control module can configure a serial port to be connected with the level conversion module and convert a received TTL level into an RS422 level to communicate with the external equipment, and the power supply management module supplies power to the system. According to the present invention, the problem that the communication serial ports are insufficient is effectively solved, and meanwhile the input and output states of the serial ports can be freely configured.
Owner:HARBIN ENG UNIV

Continuous casting billet conveying device and method

The invention discloses a continuous casting billet conveying device and method, and belongs to the technical field of metallurgy. The continuous casting billet conveying device comprises a continuous casting machine tail end roller way, a straight roller way and a shared roller way, the straight roller way and the shared roller way are connected with the outlet end of the continuous casting machine tail end roller way, a first allocating device is arranged between the straight roller way and the shared roller way and used for allocating continuous casting billets, the outlet end of the shared roller way is connected with a first heating furnace, the straight roller way is connected with a rolling line, and the first heating furnace is connected with the rolling line through a first inlet roller way. By means of the device, when multi-strand continuous casting is conducted on double-rolling-line or single-rolling-line production, continuous casting straight rolling billets, uniform-temperature billets and cold billets can flexibly enter rolling lines for production, the requirements of different rolling lines for the temperature and number of different continuous casting billets are met, a production plan is reasonably arranged, and the production efficiency is improved; and heating control over the continuous casting billets can be arranged according to the actual conditions needed by the continuous casting billets and the rolling line, so that energy conservation and emission reduction of the working procedures are achieved, and meanwhile the normal production working procedures and yield of the rolling line under various conditions are guaranteed.
Owner:NANJING JINGHUANRE METALLURGICAL ENG CO LTD

Intervening changeable virtual simulation teaching system

The invention discloses an intervening changeable virtual simulation teaching system and relates to the technical field of teaching equipment production. The system specifically comprises a wall body,an operation table, a base and a teaching system, wherein a shell is fixedly mounted at a middle shaft of the top of the base, a mounting table is fixedly mounted at an edge of one side of the bottomsurface of the shell, a motor is fixedly mounted at the top of the mounting table, a bevel gear b is fixedly mounted at an output end of the motor, a rotating mechanism is fixedly mounted at the topof the bevel gear b, a rotating table and a driving motor are fixedly mounted at the top of the rotating mechanism, the rotating table keeps rotating in the vertical direction, and a moving mechanismis fixedly mounted at the middle axis of the bottom surface of the shell. According to the intervening changeable virtual simulation teaching system, the occupied space is fully utilized, it is guaranteed that the area in teaching can fully meet the requirement for the number of students, teachers can conduct unified control, a problem that due to the fact that the number of students is large, theteaching quality is low is solved, and operability and predictability of the teachers are very high.
Owner:NANJING XUANSHI QIYUAN SOFTWARE TECH CO LTD
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