April 29, 2024

What is the gap between the Chinese and foreign sensor industries?

Dong Yonggui, a professor at the Department of Precision Instruments at Tsinghua University, said that China has been paying attention to sensor technology since 1980. After years of hard work, the level of development in sensor research is still relatively good. However, the technological progress in productization is still not very satisfactory. In many sensor technologies, the level of domestic laboratory research is not very poor. Unfortunately, it has not been fully utilized and has not been transformed into mature products entering the market.

He said that the research of sensor technology requires a long time investment. The development of a sensor will take 6-8 years to mature, and Chinese companies can't afford such a long cycle. Chinese companies are more difficult to withstand failure, and the risk of sensor failure is high.

According to what Dong Yonggui learned during his visit to Japan, many of the research and development supported by Japanese companies are not products, but the company can afford it. As long as two of the ten items can be turned into products.

"In contrast, many of our companies are prepared to take what others have." Dong Yonggui said that this kind of thinking is problematic, including that we always want to introduce foreign talents with ready-made projects. "Not ready to raise fish, but to fish a fish."

Compared with the larger equipment, the investment required by the sensor in the productization process is generally not large, so it is more suitable for small business investment. In this regard, China should have an advantage. However, if you consider it from another perspective, this is also a shortcoming.

One of the characteristics of the sensor industry is that the sensor itself is technically high, but the price of a single sensor is generally not high. One result of this feature is that although the sensor's technical added value is high, it is difficult to form a considerable output value simply by relying on the sensor.

According to the analogy of Professor Dong Yonggui, the sensor is a bit like the “drug lead” in traditional Chinese medicine. Its function is very important, but the actual scale needs to rely on the whole drug. Many foreign sensor companies have made breakthroughs in some kinds of sensors, and soon relevant measuring instruments will be developed.

Moreover, under China's patent protection mechanism, the key technologies that have been painstakingly developed in sensors often exhibit a "squatting" nature. After being copied, it is difficult to make it clear, and enterprises can't afford a lawsuit. Although there are MEMS sensor companies in China, they are all commissioned. If they are not good, they will be processed by the processing companies themselves. The current enterprise innovation system has great problems.

In 2012, a senior in the field of domestic sensors said at a conference why China's sensor industry is not developing well, that is, there is a lack of leaders who can lecture at the State Council. The research and development in this field is long and not significant enough. The small things that are based on the physical phenomena that were discovered decades ago and hundreds of years ago.

The scholar pointed out that this kind of research is actually very hard. For example, there is an acceleration sensor used in the petroleum industry for seismic wave measurement, based on the principle proposed by the Soviet Union decades ago, but until the expert disintegrated in the Soviet Union. After that, it was only in the United States that products were formed and applied.

"The more we need to accumulate thin areas and wide-ranging areas, the bigger the gap is." Dong Yonggui believes that the gap is now further widening.

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