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Focus on the future development trend of smart temperature and humidity sensors

by:Rika Sensors     2021-09-02
Focus on the future development trend of smart temperature and humidity sensors
The early smart sensor processed and transformed the output signal of the sensor and sent it to the microprocessor for arithmetic processing through the interface. In the 1980s, smart sensors were mainly based on microprocessors, integrating the sensor signal conditioning circuit, microelectronic computer memory and interface circuit into a chip, so that the sensor had a certain degree of artificial intelligence. In the 1990s, the intelligent measurement technology has been further improved. The sensor has realized miniaturization, structural integration, array type, digital type, convenient use, simple operation, and has self-diagnosis functions, memory and information processing functions, and data storage. Function, multi-parameter measurement function, network communication function, logical thinking and judgment function.

Intelligent temperature and humidity sensor is a kind of intelligent sensor network product. In 2009, the smallest digital humidity and temperature sensor in the world at that time attracted widespread market attention. Not only provide a sensor, but integrate temperature compensation and calibration data into one circuit. The temperature and humidity sensors are fully calibrated before they leave the factory. Customers only need to communicate with the single-chip microcomputer to collect data directly. At present, temperature and humidity sensors are basically circulated in the market in this mode, and the pursuit of smaller and more convenient integrated circuits is the direction for future temperature and humidity sensor manufacturers to research.

Development trend of intelligent temperature and humidity sensors

1. Development towards high precision

As the degree of automated production increases, the requirements for sensors are also increasing, and it is necessary to develop high sensitivity and accuracy The new sensor with high response speed and good interchangeability ensures the reliability of production automation.

2. Development towards high reliability and wide temperature range

The reliability of the sensor directly affects the anti-interference performance of electronic equipment. The development of sensors with high reliability and wide temperature range will be a permanent direction. . The development of new materials (such as ceramics) sensors will be very promising.

3. Development towards miniaturization

The functions of various control instruments and equipment are getting stronger and stronger. The smaller the size of each component, the better, so the volume of the sensor itself is also as small as possible. This requires the development of new The materials and processing technology of the current, the volume of the sensor made of silicon materials is already very small. For example, traditional acceleration sensors are made of gravity blocks and springs, which are large in size, poor in stability, and short in life. However, silicon acceleration sensors made of various micro-processing technologies such as lasers are very small in size and reliable in interchangeability. Sex is better.

4. Development towards intelligent digitalization

With the development of modernization, the function of the sensor has broken through the traditional function, and its output is no longer a single analog signal (such as 0~10mV), but through a microcomputer Some of the processed digital signals even have control functions, which are called digital sensors.

5. Development towards micro-power consumption and passivity

Sensors generally convert from non-electricity to electricity, and cannot do without power when working. They are often powered by batteries in the field or in places far away from the power grid. Or use solar energy to supply power, and the development of micro-power sensors and passive sensors is an inevitable development direction, which can save energy and increase the life of the system.

6. Development towards networking

Networking is an important direction of sensor development, and the role and advantages of the network are gradually emerging. Network sensors will certainly promote the development of electronic technology.



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