[Anatomy] What are the domestic smart sensor manufacturers and mainstream sensor manufacturers? 】
First, the sensor is a smart production center
In order to obtain information from the outside world, people must rely on sensory organs. And relying on people's own sensory organs, their function is not enough in the study of natural phenomena and disciplines and consumer activities. In order to comply with such conditions, sensors are needed. Therefore, it can be said that the sensor is an extension of human features, also known as electrical features.
With the advent of the new technological revolution, the world began to enter the information period. In the process of accepting information, the first thing to be dealt with is to obtain accurate and reliable information, and the sensor is a secondary way and means to obtain information in the natural and consumer categories.
Nowadays, a wide variety of sensors have already soaked into all aspects of life. The massive data collected every second constitutes the foundation of the Smart Connect. As the sensory sensation of any smart device, the sensor can collect information on the physical level, and secondarily, it can include various aspects such as humidity, temperature, and pressure.
In ancient industrial consumption, especially in the process of automated consumption, various types of sensors are used to supervise and master the various parameters in the consumption process, so that the equipment can work in the general form or the best form, and the products reach the best quality. Therefore, it can be said that without a large number of excellent sensors, ancient consumption will lose its roots.
As the main component of automated intelligent equipment, sensors can be said to be the foundation and center of intelligent production. It is widely used in various areas of social development and human life, especially in the areas of machine equipment manufacturing, superstition instrumentation, medical and health, communications and electronics, and sensors are used throughout. At present, the sensor is being developed towards miniaturization, multi-functionalization, digitization, intelligence, fragmentation, and collection, and the market usage is increasing explosively. There is no doubt that smart sensors will become one of the central devices for industrial Internet, Internet of Things, industrial big data and even artificial intelligence.
Second, the status of China's use of sensors
With the expansion of automation of China's industrial product consumption, traditional sensors can no longer co-operate with the needs of industrial automation. Industrial automation has fierce demand for high-quality sensor products.
With the development of sensor technology, today, the United States, Japan, Germany and other developed countries are temporarily in the leading position in the world. The three countries simply hold 70% of the global market, and following the MEMS process technology maturity from time to time, this increasing trend will become more clear.
In recent years, China's sensor products have been developing rapidly, and the use of sensors has increased a lot. China's self-reliant sensors have been able to satisfy the needs of low-end markets. It is understood that there are more than 6,500 employees in the R&D and production of Global Sensors, and there are more than 20,000 kinds of sensors. China now has over 10,000 kinds of sensors. Nowadays, the consumer enterprises of China's sensors are mainly concentrated in the Yangtze River Delta region, and gradually form a regional spatial plan centered on Beijing, Shanghai, Nanjing, Shenzhen, Shenyang, and Xi'an. For example, in the Yangtze River Delta region, with Shanghai, Wuxi, and Nanjing as the middle ground, it gradually formed a relatively complete array of sensor consumption, including thermal, magnetic, image, weighing, optoelectronic, temperature, and gas sensors.
In the area of ​​smart sensor production, the difference between different industries is very large.
For the petrochemical and other process industries, there are fewer new high-end industrial sensors required, but in the high-end production category, the localization rate of sensors is still low. Some special components required for intelligent production, such as sensors that require high temperature and high pressure, are still somewhat different in reliability and stability of Chinese products.
In areas such as aerospace and military engineering, in order to be safe and controllable independently, local consumer R&D and local high-end sensors may be excluded. However, in the case of high-end sensors used in the aerospace category, although our country can provide for its own independence, it is still not a condition for the large-scale production of products because of its secondary importance for scientific research institutes.
However, using the industry, it is still more cost-effective to sell export products. With respect to high value-added sensors such as high-end electromechanical, visual, and force sensing, China has not yet been able to consume large amounts of money and can only rely on exports. In order to seek consistency and reliability of all pieces, export products are also used in conjunction with many sensors.
In addition, in the late stage, most of China’s smart production equipment was exported from the ocean, and the cost was high. After the introduction and digestion of Chinese equipment companies, they completed self-supporting consumption. However, in order to facilitate the selection and the stability of equipment operation, the sensors are still generally accepted as original products.
Third, China's sensor products face the battle
1. The innovation ability declines: The sensor is different from the ocean in the high-precision, high-sensitivity analysis, identity analysis and high-end special use. The middle-to-high-end sensor product is almost 100% exported from the outside world, and 90% of chips rely on the ocean. China lacks R&D and production capabilities for new principles, new devices and new material sensors.
2. The main craftsmanship has not yet been broken: there is a big difference in terms of imagination, packaging and craftsmanship. China does not have a set of sensor-assuming software with independent intellectual property rights. The reliability of domestic sensors is 1-2 orders of magnitude lower than that of similar foreign products. Sensor packaging has not yet formed series, normative, and consistent interfaces. Sensor technology equipped with R&D and consumption is controlled by foreigners.
3. The product structure is irrational: varieties, specifications, series are not complete, the craft goal is not high, the Chinese sensor products often do not form a series. Products in the measurement accuracy, temperature characteristics, echo time, stability, reliability and other goals are also quite different from the ocean.
4. Enterprise failure: More than 95% of China's sensor companies are small-scale enterprises, with a small scope, R&D failure, and poor range efficiency. From the current market share and market competitiveness index, foreign-funded enterprises still have a relatively large disadvantage.
Fourth, the intelligent production of industrial sensor use request
Industrial sensors are the main elements for honing a country's industrial fragmentation. Industrial sensors are not only feature requests, but are also very complex. In terms of function, industrial sensors are classified into photoelectric, heat-sensitive, gas-sensitive, force-sensitive, magnetic-sensitive, acoustic-sensitive, and moisture-sensitive types. Taking industrial robots as an example, several major sensors touched on here include: 3D vision sensors, force and torque sensors, collision detection sensors, safety sensors, welding seam tracking sensors, and tactile sensors.
In terms of civil use, the industry's demands for sensors are even higher, and they consider the stability, accuracy, and operational safety. Comparing with consumer applications such as consumer electronics, industrial sensors for intelligent production have made more rigorous requests in accuracy, stability, shock resistance, and resistance to impact.
The industry must ensure that there is zero deviation, and the sensors need not only be able to communicate in time, but also adequate and accurate. Sensors used in the differential industries, they can tolerate individual requests for differences in temperature, humidity, pH, power consumption and size will be severely limited, for example, minus 60 °C extreme situation is a great challenge .
In the Industry 4.0 era, the sensors required by the Intelligent Manufacturing Institute were compared with traditional sensors. First, there is a need for more flexible interfaces. The sensors need not only be able to communicate at the master level, but also achieve higher data layer communication. Additional data or software interface allows the sensor to perform new profiling duties and new functions. These talents can enhance the flexibility, quality, compliance, and transparency of consumption, and completely change the structure of the industrial pyramid. Second, sensor needs have a smart function. The looser and more compatible the data supplied by the smart sensor, the higher the compliance of the entire data source and the more accurate the analysis results. Smart sensors that directly perform preprocessing, compaction, and filtering on data internally will satisfy the request of Marriage Industry 4.0.
V. Inventory of China's tributary industry sensor makers
China's sensor technology is comparable to the advanced countries in foreign countries. It must be 10 years behind the development of scientific research and development, and it must be 15 years behind in consumption technology. In recent years, R&D bases such as the National Key Laboratory of Sensor Technology, Micro/Nano National Key Laboratory, and National Key Laboratory of Robotics have been established. The company has set up sensors and sensors. At present, there are 1,688 consumer and R&D companies that handle sensors in China. .
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