In recent years, sensors are in the stage of transition from traditional to new scientific and technological transformations, and the combination of new sensors and instrumentation has also made tremendous progress in the instrumentation industry. The new sensors are characterized by miniaturization, digitization, intelligence, multi-functionalization, systematization, and networking. They not only promote the transformation of traditional industries, but also lead to the establishment of new industries. They are the new economic growth points in the 21st century. Miniaturization is based on micro-electro-mechanical system (MEMS) technology and has been successfully applied to form silicon pressure sensors on silicon devices.

Multi-sensor data fusion technology is forming hot spots. It was formed in the 1980s. It differs from general signal processing and also differs from single or multiple sensor monitoring and measurement. It is based on measurement results based on multiple sensors. High-level integrated decision-making process. In view of the miniaturization and intelligentization of sensor technology, based on the information acquisition, multiple functions are further integrated, resulting in convergence. This is an inevitable trend, and multi-sensor data fusion technology has also promoted the development of sensor technology.

Multi-sensor data fusion is to synthesize local data resources provided by multiple sensors of the same type or different types distributed in different locations and analyzed by computer technology to eliminate possible redundancy and contradiction among multi-sensor information. Complementary, reduce its uncertainty, obtain consistent interpretation and description of the measured object, thereby improving the rapidity and correctness of system decision-making, planning, and response, so that the system can obtain fuller information. Its information fusion appears at different levels of information, including data layer (pixel layer) fusion, feature layer fusion, decision layer (evidence layer) fusion. Because it has the following advantages over single sensor information, that is, fault tolerance, complementarity, real-time, and economy, it is gradually applied. In addition to military applications, the application field has been applied to automation technology, robotics, marine surveillance, seismic observation, construction, air traffic control, medical diagnosis, and remote sensing technology.

The development of MEMS has raised the level of miniaturization, intelligence, multi-functionality and reliability of sensors to a new level. Sensor detection instrument, based on microelectronic technology, built-in microprocessor, or micro-sensor and microprocessor and related integrated circuits (operational amplifier, A/D or D/A, memory, network communication interface circuit) Such as packaged together to complete the digital, intelligent, networked, systematic. (Note: MEMS technology also completes products such as micro-motors or actuators, which will be described in another article.) In terms of networking, currently it mainly refers to the use of multiple field buses and Ethernet (Internet), which should be selected according to the characteristics of each industry. Among them one or more, in recent years the most popular are FF, Profibus, CAN, Lonworks, AS-Interbus, TCP/IP and so on.

In addition to MEMS, the development of new sensors also depends on new sensitive materials, sensitive components and nanotechnology, such as a new generation of fiber optic sensors, superconducting sensors, focal plane array infrared detectors, biosensors, nanosensors, new quantum sensors, miniature gyros , networked sensors, smart sensors, fuzzy sensors, multi-sensors, etc.

Emerging technology development is a good development opportunity for many industries, and a number of technological convergences that extend new applications or achieve innovative technological breakthroughs can effectively promote the development of the industry. China's sensor industry must adapt to the trend of technology and develop both internationally and domestically, and let the sensors and detection instruments seize the opportunity of informationization.

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Shoe polish is a kind of product used to polish, repair leather shoes or boots, and strengthen their waterproof power, which can extend the life of shoes. Shoe polish is usually wax or paste. The utility model relates to a preparation for wiping the surface of leather shoes to make them clean and bright. It can be divided into liquid, emulsion, semi-solid and solid. The main component is wax.

Shoe polish is a substance used to shine and protect leather shoes. It can come in various forms such as paste, cream, or liquid and is typically made from a combination of wax, oil, and pigment. The polish is applied to the shoe using a brush or cloth and buffed to a shine. It helps to protect the leather from water damage, scuffs, and scratches, and can also restore the color of faded or worn-out shoes.

After applying shoe polish to the leather upper, the solvent evaporates, leaving a thin wax film, which can achieve the goals of waterproof, insect proof, shiny, protective leather, and enhancing aesthetics.

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