8results about How to "Implement embedding" patented technology

The utility model discloses a ball valve that can prevent mistaken rotation, when the valve handle needs to be rotated to adjust the opening and closing degree of the ball valve body, first, the elastic assembly's elasticity is overcome to pull out the telescopic handle outward, so that the limiting slot of the limiting sheet and the limiting disc is separated, at this time, the rotation of the valve handle is not limited and can be rotated, which is convenient for rotating the valve handle in operation, then, after the valve handle is rotated to the required position, in the process of loosening the telescopic handle, the elastic assembly drives the telescopic handle to reset, so that the limiting sheet is embedded in the limiting slot again, to realize the mistaken rotation of the valve handle.

This invention relates to the field of digital watermarking technology, and discloses a robust reversible watermark embedding and extraction method based on pseudo-Zernike moments. The method includes: calculating the pseudo-Zernike moments of the original image, performing adaptive normalization on pseudo-Zernike moments of different orders, performing a pseudo-Zernike inverse transform on the difference between the pseudo-Zernike moments calculated from the robust watermarked image and the pseudo-Zernike moments used to reconstruct the robust watermarked image, and embedding the watermark using a quantized watermarking method; when the image is not attacked, extracting the watermark information of the unattacked image and restoring the original image; when the image is attacked, extracting the watermark information of the attacked image. This invention provides different watermark strengths for pseudo-Zernike moments of different orders, making the robust reversible image more robust to geometric attacks and conventional processing. The obtained error image is compensated into the robust watermarked image to further reduce the amount of distortion information, thereby achieving high-capacity watermark embedding.

This invention provides a method for preparing olivine-type sodium iron phosphate, olivine-type sodium iron phosphate, and a sodium-ion battery, specifically relating to the field of sodium-ion secondary battery technology. The preparation method involves dissolving sodium propionate and sodium salt, adding olivine-type iron phosphate, and grinding to obtain a precursor slurry. The precursor slurry is then spray-dried and sintered at 200-400°C to obtain the olivine-type sodium iron phosphate. In this preparation method, sodium propionate not only serves as a sodium source, but propionate ions also promote the kinetics of the solid-phase reaction, resulting in purer olivine-type sodium iron phosphate and further improved capacity. Furthermore, to reduce the high ineffective carbon content caused by the difficulty in propionate decomposition at low temperatures, an appropriate metal oxide precursor is introduced to facilitate the effective decomposition of carbonaceous species during pyrolysis, providing a feasible path for the low-cost, large-scale preparation of high-performance NaFePO4 materials.

The utility model discloses an automatic replacing mechanism of a dispensing valve nozzle, the nozzle is connected to the lower end of a glue valve through threads, the automatic replacing mechanism comprises a bottom substrate, a base arranged above the bottom substrate and a sleeve matched with the nozzle, the sleeve is rotatably arranged on the upper surface of a top plate of the base, the upper end of a rotating shaft is connected with the sleeve, and the lower end of the rotating shaft is connected with the glue valve. The rotating shaft in transmission connection with a driving mechanism is used for driving the sleeve to rotate, and at least one set of protrusions and grooves matched with each other is arranged between the inner wall of the sleeve where the nozzle can be embedded and the outer side surface of the nozzle. The upper surface of the bottom substrate and the lower surface of the base are connected through at least three elastic pieces which are vertically arranged and distributed at intervals. According to the automatic replacement mechanism for the dispensing valve nozzle, in the process of disassembling the nozzle, the automatic alignment and embedding between the nozzle and the sleeve can be automatically realized.

The air duct structure of the bed type air conditioner comprises a bed body, an air inlet is formed in the bottom or the side face of the bed body, an air outlet is formed in the bed head and / or the bed tail of the bed body, an air duct communicated with the air inlet and the air outlet is arranged in the bed body, and a fan component is arranged in the air duct. Compared with a long-distance air supply mode of a traditional air conditioner, the air duct structure of the bed type air conditioner can accurately control the airflow direction, and the temperature uniformity and the comfort degree of a local area are improved. In the heating mode, the hot air rises from the bottom to form a warm air curtain wall by utilizing the floating characteristic of the hot air, so that external cold air can be isolated, the internal environment temperature is maintained, and a human body feels warm and comfortable all the time.

The application provides a kind of sodium ion battery negative electrode material and its preparation method and application.The negative electrode material includes black phosphorus, carbon carrier and sodium salt;The morphology of the carbon carrier is the morphology of LDH template;The black phosphorus and sodium salt are compounded in the carbon carrier;The carbon carrier is also doped with double metal ions, and the double metal is the double metal element in the LDH template.The negative electrode material provided by the application has multiple bonding effects between the carbon carrier, phosphoric acid, double metal ions and sodium salt, which ensures the stability of the material interface and effectively inhibits the volume expansion of black phosphorus during the cycle process;And the interaction between each substance, synergistic effect, makes the negative electrode material have excellent cycle stability and high reversible capacity, and also has good rate performance.

The utility model relates to medical instrument technical field discloses portable anesthetic gas filtration and purification device, pack filter box, the opening of filter box is provided with the box cover, the inside of box cover is provided with the cavity, the inside wall of cavity is provided with fixed component, the inside wall of filter box is provided with a plurality of activated carbon screen, the both sides of filter box are provided with support component, the fixed component includes the rotary block of rotary connection in the inside wall of cavity and two mounting blocks of sliding connection in the inside wall of cavity. This portable anesthetic gas filtration and purification device, through rotating the rotary plate drive rotary block rotation, utilize the linkage of connecting rod and spring, realize the automatic ejection and embedding of clamping block, after the quick disassembly of box cover, can directly draw out old activated carbon screen and replace new screen, can quickly complete operation, need not extra tool, save the step of screwing screw one by one, can save precious time in first-aid or transfer scene.

This invention discloses a condenser fan control method and a refrigeration device. The condenser fan control method includes: after the compressor's start / stop state changes, obtaining the actual temperature T of the condenser. LN According to the actual temperature T LN The high and low delay switching of the condenser fan's start / stop state. Changes in the compressor's start / stop state include the compressor switching from off to on and / or from on to off; after the compressor starts, the actual temperature T of the condenser is obtained. LN If the actual temperature T LN Rise to t 开1 The condenser fan delay is h 开 Start; and / or obtain the actual temperature T of the condenser after the compressor stops. LN According to the actual temperature T LN High and low adjustment h 关 The length of the condenser fan delay (h) 关 Power off. This invention reduces noise generated when the refrigeration equipment is turned on and accelerates heat dissipation when the refrigeration equipment is turned off by delaying the switching of the condenser fan's start-up and shutdown states, thereby effectively improving the user experience.