4results about How to "Convenient for teaching" patented technology

The utility model discloses an internet of things teaching development board based on OpenHarmony, which belongs to the technical field of internet of things and comprises a core control board, a function expansion board and a signal expansion board. The core control board is integrated with a processing module, a display module, a communication module, a sensing module and the like; the function expansion board provides a touch-to-connect function and a wired communication function; the signal expansion board supports signal acquisition of various sensors. An OpenHarmony system and related development tools are adopted, and after the core control board, the function expansion board and the signal expansion board are correctly connected, power is supplied to the development board through a power interface. HUAWEI DevEco Studio 3.1 Beta2 and OpenHarmony SDK 9 are used for writing related project programs of the Internet of Things, and debugging and downloading of the programs are carried out through a DEBUG serial port TTL socket and a JTAG debugging interface. The development board can realize acquisition of signals of the temperature and humidity sensor and the photosensitive sensor, and performs interactive display, automatic control and early warning in combination with the OLED display screen and the function keys; wired / wireless data communication is carried out through the Ethernet port and the WiFi module; a touch-to-connect function is realized through the NFC module of the function expansion board, and wired communication is realized through the RS485 communication interface; various sensors can be introduced through the signal expansion board, and related teaching application development of the Internet of Things can be realized, including sensor data reading, wired / wireless data communication, comprehensive application development and the like. And an experiment platform with high integration level and strong expansibility is provided for Internet of Things teaching.

The utility model relates to the technical field of cell culture, in particular to a cell culture device for immune cell amplification, which comprises a base horizontally arranged, air cushions distributed along four vertex angles are arranged on the lower end face of the base, the upper end faces of the air cushions are adhered to the lower end face of the base through resin glue, a U-shaped frame is arranged on the upper end face of the base, and the U-shaped frame is connected with the air cushions. The lower end face of the U-shaped frame is fixedly assembled with the upper end face of the base through screws, plate grooves distributed at equal intervals in the vertical direction are formed in the two sides of the inner wall of the U-shaped frame, and a partition plate is slidably inserted between the two plate grooves in the same horizontal line and is of a hollow structure. By means of the structure of the U-shaped frame, it can be guaranteed that the frame is stable after the partition plates are inserted and connected in a butt joint mode, the culture dish containing base can be arranged in a layered mode through the partition plate structure, culture dishes can be placed in the culture dish containing base, a plurality of culture dishes can be placed through multi-point distribution, the culture dishes can be stored in a centralized mode, and centralized storage and transfer are facilitated.

The utility model relates to a kind of teaching power amplifier equipment, belong to teaching aid technical field, including cabinet and power amplifier control host, the upper end of cabinet is provided with through-hole, and the inside of cabinet is fixedly installed with sliding plate, the inside sliding of sliding plate is connected with baffle, the lower end of baffle is linked installation has lifting plate, power amplifier control host is fixedly installed in the upper end of lifting plate, the lower end of sliding plate middle position is fixedly installed with electric telescopic rod, and the telescopic end of electric telescopic rod is fixedly connected with baffle, the front end of cabinet is embedded with sound, power amplifier control host is lifted by lifting plate, it is convenient to be raised to the upper of cabinet or be lowered to the inside of cabinet, use or storage, when storage, reach the effect of protecting power amplifier control host, and when storage, the descent of lifting plate, drive baffle moves in the inside of sliding plate, the exposed through-hole is plugged, improve the utilization effect of cabinet upper surface, it is convenient for teaching use.

The utility model relates to the technical field of teaching devices, in particular to an auxiliary teaching device for news transmission, an adjusting assembly is arranged in a placement box, a teaching assembly is arranged at the position, corresponding to the adjusting assembly, in the placement box, and the adjusting assembly comprises an adjusting frame arranged in the middle of the rear wall in the placement box; the outer wall of the adjusting frame is slidably connected with a sliding seat, a connecting frame is fixedly mounted in the middle of the outer wall of the sliding seat, a mounting seat is fixedly mounted at the top of the connecting frame, the adjusting frame is connected with the sliding seat through a lifting mechanism, and the teaching assembly comprises a teaching frame mounted on the upper portion of the connecting frame. A teaching board is rotationally connected to the middle of the interior of the teaching frame. According to the news transmission auxiliary teaching device, the height and the angle can be conveniently adjusted for display, the teaching device can be stored and protected after being used, and a better use prospect is brought.