6results about How to "Wide temperature adaptability" patented technology

The invention relates to the technical field of OLED micro-displays, and discloses a temperature sensor calibration and external temperature compensation method for an OLED micro-display, and the method comprises a temperature compensation parameter storage module which is used for storing the temperature calibration data of the OLED micro-display through a one-time programmable memory OTP. According to the temperature sensor calibration and external temperature compensation method for the OLED micro-display, the actual working temperature Tactual is calculated by using the current temperature register value REG1 measured by the temperature sensor and factory calibration data T0 and REG0, the brightness change is compensated by adjusting the common voltage Vcom in real time, and the temperature of the OLED micro-display is compensated by combining a temperature compensation formula. The brightness of the display is accurately controlled by adjusting the electric field intensity, the Vcom is improved in a low-temperature environment to compensate brightness reduction, and the Vcom is reduced in a high-temperature environment to prevent excessive light emission or thermal damage, so that the problem of inconsistent display effects in long-term use is solved, and the user experience is improved.

The utility model relates to the technical field of gas extraction pipes, and discloses a connecting pipe stable in connection, which comprises a pipeline and a pipe sleeve, thin-section external threads are fixedly arranged on the outer surface of the thin section of the pipeline, thin-section internal threads are fixedly arranged on the inner surface of the thin section of the pipeline, and the thin-section internal threads are fixedly arranged on the inner surface of the thin section of the pipeline. Thick-section external threads are fixedly arranged on the outer surface of the thicker section of the pipeline, thick-section internal threads are fixedly arranged on the inner surface of the thicker section of the pipeline, a thin-end gasket is fixedly arranged at the end of the thinner section of the pipeline, and a thick-end gasket is fixedly arranged at the end of the thicker section of the pipeline. According to the connecting pipe, the pipeline and the casing pipe are connected in a threaded and sleeved mode, the casing pipe is fastened at the connecting position through the hoop, the pipe wall is of a multi-layer composite structure, stability and safety of the pipeline are guaranteed from the two aspects of the structure and the material, the threaded and sleeved mode and the hoop fastening mode are simple and easy to operate, and the connected pipeline is free of a large number of protrusions and basically kept flat. And arrangement in a drill hole is facilitated, and the operation efficiency is improved.

The invention provides an efficient and environment-friendly circulating cooling water non-phosphorus pre-filming agent and a preparation method thereof, and belongs to the technical field of water treatment.The pre-filming agent is prepared from sodium gluconate, zinc sulfate heptahydrate, sodium chloride, copper sulfate pentahydrate, a terpolymer, sulfuric acid and benzotriazole; the terpolymer is prepared from 2-phenoxy ethyl acrylate, metacrylic acid ester and acrylic ester through a thermal polymerization reaction; by adding the benzotriazole, the corrosion resistance is remarkably improved, the pre-filming efficiency is further enhanced, a layer of stable protective film can be rapidly formed on the metal surface of equipment, the service life of the equipment is effectively prolonged, and the overall production efficiency is improved.

This utility model discloses a piezoelectric acoustic sensor, including a transducer, a preamplifier, and an adapter structure. Sound waves act on the outer shell at the bottom of the transducer, and the shell transmits pressure to the piezoelectric element, causing polarization within the element. Through a series of processes, the sound signal is converted into an electrical signal. The piezoelectric acoustic sensor has a closed structure, requiring no sound-permeable hole, allowing it to adapt to harsh environments. It can also measure relatively large sound pressure levels and has a wide temperature range, operating from -40℃ to 120℃.

The invention provides an SMA-based satellite-rocket connection rapid unlocking mechanism, which comprises a support, an extension mechanism, a retraction mechanism and a circuit board, the extension mechanism and the retraction mechanism are respectively arranged on two surfaces of the support, the circuit board is arranged at the rear end of the support, and the extension mechanism comprises a push rod plate, a lever assembly, an extension SMA assembly and three first guide wheels. A first shape memory alloy wire of the extension SMA assembly is sequentially wound among the three first guide wheels, the two ends of the extension SMA assembly are connected to the circuit board through first connectors, the retraction mechanism comprises a separation plate, a retraction SMA assembly and a second guide wheel, and a second shape memory alloy wire of the retraction SMA assembly is wound around the second guide wheel. And two ends of the second connector are respectively connected to the circuit board through the second connector. The shape memory alloy wire adopted by the invention has excellent performances such as large recoverable deformation, strong recoverability, wide temperature adaptability, stable performance and the like, and can effectively replace a pyrotechnic device and reduce separation impact.

The utility model provides a high-temperature-resistant piezoelectric acoustic transducer, which comprises a transducer, a preamplifier and a high-temperature-resistant cable, sound waves act on a shell at the bottom of the transducer, the shell transmits pressure to a piezoelectric patch, an electric polarization phenomenon is generated in the piezoelectric patch, and sound signals are converted into electric signals through a series of processing. The piezoelectric acoustic sensor provided by the utility model is of a closed structure, does not need a sound transmission hole, can adapt to a severe environment, can measure relatively large sound pressure, has a relatively wide temperature range, and can be used at the temperature of-40 DEG C to 350 DEG C.