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In-depth analysis of MEMS sensors and China Internet of Things

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In recent years, sensors are in the development stage of the transition from traditional to new sensors. The new sensor is characterized by miniaturization, digitization, intelligence, multi-functionality, systematization and networking. It not only promotes the transformation of traditional industries, but also leads to the establishment of new industries. It is a new economic growth point in the 21st century.

As a recognized high-tech industry with a promising future, the sensor industry is attracting the attention of the world for its high technical content, good economic efficiency, strong penetration ability and broad market prospects. In 2007-2014, China's sensor industry has achieved good development. The total industrial output value of the industry has generally increased, and its share in GDP has remained between 0.10% and 0.15%.

Under the guidance of a series of policies and support such as the development of high technology, industrialization, and the development of sensors and the universal application in the national economy, the sensor has formed a certain role under the impetus of the booming Chinese electronic information industry market. The industrial base has made great progress in technological innovation, independent research and development, transformation of results and competitiveness.

A number of new sensors based on MEMS (Micro Electro Mechanical Systems) technology are entering the market. Sensor design technology, material control technology, production technology, reliability technology and testing technology are constantly developing and mature, and the mass production capacity is gradually improved. Traditional sensors such as mechanical quantity sensors, gas sensors, temperature sensors, optical sensors, and voltage sensitive sensors not only have a gradual increase in the domestic market share, but also some exports.

Under the guidance and support of the country to strengthen the development and application of sensors, China's sensor industry is facing a good development prospect, and the future growth space is expected.

Policy Environment

In 2013, in order to further enhance the innovation capability and international competitiveness of the sensor and intelligent instrumentation industry, the innovation, continuous and coordinated development of the sensor and intelligent instrumentation industry will be promoted. The Ministry of Industry and Information Technology, the Ministry of Science and Technology, the Ministry of Finance, and the National Standardization Management The committee organized and formulated the Action Plan for Accelerating the Development of Sensors and Intelligent Instrumentation Industry.

Later, 14 departments including the Ministry of Industry and Information Technology and the National Development and Reform Commission jointly issued 10 special action plans for the development of the Internet of Things, including the special action plan for the IoT government, the special action plan for the development of the Internet of Things technology, and the special action for the development of the Internet of Things standards. The plan has set clear goals and requirements for the development of sensors.

Industry chain analysis

From the perspective of the industrial chain, the upstream industry chain of the sensor industry includes new materials, new processes, and new manufacturing equipment. Sensor materials are divided into semiconductor materials, ceramic materials, metal materials and organic materials. Downstream applications are associated with industry, automotive electronics, communications electronics, consumer electronics, specialty equipment, and more. It can be seen that the field of the upstream and downstream of the sensor industry is very wide. In recent years, domestic sensor applications have been mainly distributed in the fields of mechanical equipment manufacturing, household appliances, scientific instrumentation, medical and health, communication electronics, and automobiles.

investment risk

I. Technical risk: Japan and Europe have absolute advantages in sensor technology. The domestic high-end sensor market basically relies on imports, and the domestic sensor core technology is too small.

Second, the market risk: The key to the future of the Internet of Things is in the fields of RFID, sensors, embedded software and transmission data computing, but domestic companies are not in a monopoly position in a certain field.

Third, the risk of competition: large enterprises are not willing to do, small enterprises can not do, because each field needs tailor-made sensors, although there is market demand, but the market size is not large, resulting in sensor manufacturers' technical input costs are too high;

On the contrary, sensor product technology is based on new sensitive materials, nanotechnology, biotechnology, biomimetic technology, new energy storage technology and very low energy consumption technology, but small enterprises do not have such technical capabilities.

Fourth, research and development risks: the research of sensor technology requires a long time investment, the development of a sensor, it takes 6 years to 8 years to mature, and generally Chinese companies can not afford such a long cycle. Chinese companies are more difficult to withstand failure, and the risk of sensor failure is high.

Development issues

First, the lack of core technology and weak innovation ability: the gap between high-precision, high-sensitivity analysis, component analysis and special applications is huge. Nearly 100% of medium and high-end sensor products are imported from abroad, 90% of chips rely on foreign countries, and domestic lacks. R&D and industrialization capabilities for new principles, new devices and new material sensors.

Second, key technologies have not yet broken through: there are big gaps in design technology, packaging technology, and equipment technology. There is no set of sensor design software with independent intellectual property rights in China. The reliability of domestic sensors is 1-2 orders of magnitude lower than that of similar foreign products. The sensor package has not yet formed a series, standard and unified interface. Sensor technology equipment research and development and production is monopolized by foreign countries.

Third, the industrial structure is irrational: the varieties, specifications, and series are incomplete, and the technical indicators are not high. Domestic sensor products often do not form a series, and the products have considerable gaps in measurement accuracy, temperature characteristics, response time, stability, reliability and other indicators.

Fourth, the company's ability is weak: more than 95% of China's sensor companies are small enterprises, small in scale, weak in research and development, and poor in scale. From the current market share and market competitiveness index, foreign-funded enterprises still occupy a large advantage.

Investment Advice

I. Optimize the development environment of the sensor market: Actively construct the ecological environment of the Internet of Things and sensors, rely on the Internet platform services and the mobile Internet, actively integrate all aspects of the industry chain, guide consumers to participate, and bring the product and market closer.

Second, the government will increase the construction of relevant security facilities: promote the application of public infrastructure and service systems by smart city construction, effectively gather funds, manpower and various social resources to play an industrial-driven effect; focus on key areas and target a wide range of market needs. The field will drive the injection of inertial sensors and environmental sensors with obvious effects, encourage mergers and acquisitions, accelerate the entry into the high-end sensor market, accelerate the establishment and implementation of information security systems, strengthen the research and development of information protection technologies, and establish a security risk rating system.

Third, further improve the sensor business model: promote mature application models, establish business model innovation systems, create business model exchange environment, expand IoT value-added services, and foster emerging business models.

Fourth, the development and research of new sensors: MEMS sensors are new sensors manufactured using microelectronics and micromachining technology. Compared with traditional sensors, it has the characteristics of small size, light weight, low cost, low power consumption, high reliability, suitable for mass production, easy integration and intelligentization. At the same time, the feature size on the order of micrometers makes it possible to perform functions that are not possible with some conventional mechanical sensors.

Fifth, improve the level of sensor technology

1. Develop high-performance, low-cost, low-power sensor technology

Sensors will move toward high performance, low cost, low power technology. Key technologies include new materials and new functional sensors, MEMS chips for single-chip integrated sensors and microprocessors, intelligent sensors for microprocessor information processing and storage, and high-precision sensors for a variety of special environments.

2. Continuously optimize key sensor network technologies in all aspects

The key to sensor network technology is to break through the sensor node SoC chip technology, networking communication and collaborative processing technology, low-power low-cost embedded microprocessor and micro-operating system technology, sensor network gateway technology, sensor network middleware technology, transmission Sensor network and mobile communication network convergence technology, etc., to develop sensor node equipment that can adapt to extreme environments.

to sum up

As the end of the entire Internet of Things, the sensor has the greatest potential demand. The huge dependence of the domestic sensor industry on imports has become the bottleneck of China's development of the Internet of Things. Only when domestic enterprises realize the localization of sensors can the overall strength of the entire industry be improved, and the rapid development of the Internet of Things industry can be accelerated.

The scale of China's Internet of Things and sensor industry continues to expand. In 2015, the overall market size of China's Internet of Things reached approximately 750 billion yuan, while the sensor market reached approximately 120 billion yuan.

The development of the sensor industry has entered a new era. More sophisticated sensors such as network sensors, biosensors, and nanosensors have entered the domestic market and entered our lives. The sensor system under the current state of the art is developing in the direction of miniaturization, intelligence, multi-functionality and networking.

In the future, with the continued development of CAD technology, MEMS technology, information theory and data analysis algorithms, future sensor systems will become more miniaturized, integrated, multi-functional, intelligent and systematic.

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