'Smart home appliance sensors' have become a big trend. What is the strength of domestic sensing technology?
We take the sweeping robot as the entry point. Most people think that the sweeping robot is completing the sweeping task in the process of random collision. Then, when will it become smart instead of dragging the garbage to the house?
If you want to make the sweeping robot smart, you need to make it intelligent and have the ability to perceive and make decisions independently.
To let the sweeping robot simulate people's sweeping behavior, sensors need to be added to recognize and respond to home environment information.
Sensors are widely used intelligent household appliances in addition to making sweeping robots smarter, more and more sensors are widely used in intelligent household appliances, and the introduction of sensors into household appliances becomes more urgent, it helps household appliances to increase comfort, reduce energy consumption, reduce noise, etc.
For example, washing machines measure temperature parameters through NTC, thermostat and thermocouple, use pressure sensors and magnetic trigger relays to measure water level, and use various types of sensors to participate in measurement, the measured parameters include temperature, rotation, water level, mass, position, disorder, etc.
It is understood that in the past, the function of the sensor is mainly used in temperature control and level control, and now its function can be done with a capacitive sensor control button switch, with an integrated temperature sensor to display the engine overload and so on.
According to the latest foreign research report, the global smart home appliance market is expected to be about 49. 5% in the next five years.
The compound annual growth rate of 4% is growing rapidly, and the market size is expected to reach 785 US dollars by 2023.
The expansion of the market scale of intelligent household appliances has catalyzed the rapid popularity of the sensor market.
In addition, sensors are the basic components of the internet of things, and the government supports the entire sensor industry. More and more household appliances are equipped with sensing functions, and many electronic enterprises have increased their investment in sensors.
Many enterprises actively lay out sensors for household appliances. It is believed that in the more complex smart home ecosystem in the future, it is difficult to solve the problem by only one communication technology, the future must be the integration of various technologies.
Long ago, LG, a home appliance company, showed the new SmartThinQ sensor at the 2015 IFA exhibition. It transmits data to mobile phones by sensing vibration and temperature, the biggest role is to make traditional home appliances intelligent.
In the same year, Xiaomi showed its products of Xiaomi ecological chain--
'Smart Home Package' includes multi-function gateway, human body sensor, door and window sensor, wireless switch, etc. These things are intelligently controlled through ZigBee protocol.
As the 'hot spot' of smart home appliances, sensors have already been laid out by many semiconductor enterprises.
In July 2018, Ames Semiconductor launched the ambient light and proximity sensor series, which meets the high sensitivity, low power consumption and small package size requirements of consumer electronic display/LED brightness control.
These sensors can automatically adjust LCD display backlight or indicator LED as the brightness of light changes.
In February of the same year, Anselme Semiconductor released a multi-sensor shield board and expanded the software of the Internet of Things development kit to connect smart homes faster.
In addition, Anselme is developing an Android APP, which will see sensor data and control brakes through low-energy BLE collection.
ADI has recently launched a series of precision instrument amplifiers, which can be applied to white goods (Oven, stove)
Temperature measurement has the advantages of low cost, internal cold end compensation and high resistance differential input.
Intel Corporation launched the home care technology of wireless sensor network. By embedding semiconductor sensors in shoes, household appliances and other devices, the sensors are networked by wireless communication to efficiently transmit information, thus facilitating care.
Sensors have broad prospects not only in household appliances, but also in medical care.
The technical problems of sensors in our country have not yet been overcome. However, judging from the national conditions of our country, the popularization rate of intelligent household appliances is relatively low, quoting the words of Dr. Yang Zhenghong, a domestic big data expert: 'smart home has been applied in a small range in first-tier key cities, mainly focusing on home appliance control and energy conservation.
'The reason for the low penetration rate cannot be separated from technical factors, and the domestic technology in the field of smart home appliance core component sensors is still relatively backward.
Ye Xiaohua, secretary general of Shanghai Internet of Things Industry Association, said: 'At present, smart home faces two major problems: technological innovation and standards.
'According to the data provided by Ye Xiaohua, the proportion of domestic imports of medium and high-end sensors is up to 80%, and the import of sensor chips is up to 90%, and there is a serious shortage of high-tech products such as digitalization, miniaturization and intelligence.
Sensor technology is the core technology to realize intelligent household appliances and the foundation to realize the internet of things. However, China's sensor technology level still needs efforts.
Ni Guangnan, an academician of the Chinese Academy of Sciences, said: 'China's sensor products are short of varieties and low in technical grade, especially the technical problems of highly sensitive, intelligent and miniaturized sensors have not yet been overcome.
The lag of independent research and development of sensors not only leads to the high cost of the Internet of Things system, hinders the application and promotion of the internet of things, but more importantly, potential security risks.