The Development Prospects of Temperature Sensors

The development prospects of temperature sensors:
　

In the past decade, analog integrated temperature sensors and intelligent temperature sensors have been developed to meet the demands of high precision, extreme conditions, miniaturization, and high integration on chips in industry.

1. Analog integrationTemperature sensor

Integrated sensors are made using a silicon semiconductor integrated process, hence also known as silicon sensors or monolithic integrated temperature sensors. Analog integrated temperature sensors were introduced in the 1980s. They integrate temperature sensors onto a single chip and can perform functions such as temperature measurement and analog signal output. The main feature of analog integrated temperature sensors is their single function (Only measuring temperature, with small temperature measurement error, low price, fast response speed, long transmission distance, small volume, micro power consumption, etc., suitable for long-distance temperature measurement, without the need for nonlinear calibration, and simple peripheral circuits. Compared with traditional discrete temperature sensors, integrated temperature sensors have obvious advantages. Most traditional temperature sensors are based on discrete temperature sensing components, such as the PT100, which require a certain peripheral circuit to measure.) Quantity. For today's highly integrated electronic products, this is obviously not very practical and convenient. Of course, integrated temperature sensors also have inherent drawbacks compared to discrete sensors: measurement accuracy is limited by process fluctuations. Although there have been publications on high-precision CMOS integrated temperature sensors in the academic community (& plusmn; 0.1& deg; C). However, due to the high cost of TRIM, it cannot be fully applied in practical large-scale production. Considering the needs of practical applications, not all applications need to achieve such accuracy

2. Intelligent temperature sensor

Intelligent temperature sensors (also known as digital temperature sensors) are combined with various microprocessors and connected to a network. Through intelligent theory (artificial intelligence technology, neural network technology, fuzzy technology, etc.), the sampled data is processed to form an intelligent temperature sensor with a series of functions such as signal processing, temperature control, logic function, etc. Intelligent temperature sensors were introduced in the mid-1990s. It is the crystallization of microelectronics technology, computer technology, and automatic testing technology (ATE). At present, various intelligent temperature sensor series products have been developed internationally. The intelligent temperature sensor contains temperature sensors, A/D converters, signal processors, memory (or registers), and interface circuits internally. Some products also come with a multiplexer, central controller (CPU), random access memory (RAM), and read-only memory (ROM). Intelligent temperature sensors can output temperature data and related temperature control variables, adapt to various microcontrollers (MCUs), and achieve testing functions through software. Their intelligence depends on the level of software development. New Trends in the Development of Intelligent Temperature Sensors:

1. Improve temperature measurement accuracy and resolution

2. Add testing function

Standardization and normalization of 3-bus technology

4. Reliability and Safety Design

5 Virtual temperature sensors and network temperature sensors

Vision for the development of temperature sensors:
　

In recent years, the process of industrial modernization in China and the continuous high-speed growth of the electronic information industry have driven the rapid rise of the sensor market. As the most important type of sensor, temperature sensors account for over 40% of the total demand for the entire sensor. Temperature sensors have a wide range of applications, including temperature measurement and control, temperature compensation, flow rate, flow and wind speed measurement, liquid level indication, temperature measurement, ultraviolet and infrared light measurement, microwave power measurement, etc. They are widely used in fields such as color televisions, computer color displays, switching power supplies, water heaters, refrigerators, kitchen equipment, air conditioning, automobiles, etc. In recent years, the rapid growth of the automotive and consumer electronics industries has driven the rapid growth of demand for temperature sensors in China. However, with the continuous improvement of industrial production efficiency and the expansion of automation level and scope, the requirements for temperature sensors are also increasing. Although intelligent temperature sensors can achieve high precision, multifunctional, bus standardization, high reliability and safety, there are still many technical limitations to be solved, such as the development of virtual sensors and network sensors, single-chip temperature measurement systems, etc. Therefore, the author expects that in the future, with the popularization of intelligent temperature sensors, cost reduction, and breakthrough in technological bottlenecks, they will replace the position of traditional sensors. However, there is still a long way to go from that step.

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For sensor details, please consult the CELTRON ★ China General Agent, which is broadcasted for you in the following news

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Guangzhou Zhongxin Automation Technology Co., Ltd. Main brand:

Weighing sensors: Mettler Toledo weighing sensor from Switzerland, HBM weighing sensor from Germany, Transcell weighing sensor from the United States, Celtron weighing sensor from the United States, Tedea huntleigh weighing sensor from the United States, Vishay Revere weighing sensor from the United States, Sensortronics weighing sensor from the United States, FLINTEC weighing sensor from Germany, RICE LAKE weighing sensor from the United States, BLH weighing sensor from the United States, ZEMIC weighing sensor from NOBEL from the United States Mkcells weighing sensor from the United States, Corey weighing sensor from the United States, Suncells weighing sensor from the United States, Chcontech weighing sensor from the United States, OAP weighing sensor from the United Kingdom, Guangshi weighing sensor from the United States, Laumas weighing sensor from Italy, N.B.C. sensor from Italy, AEP weighing sensor from Italy, Utilcell weighing sensor and display from Spain, NMB weighing sensor from Japan, NTS weighing sensor from Japan, Bongshin weighing sensor from Korea Korean DACELL load cell, Korean Fine load cell, Korean CAS load cell, German Sartorius load cell, German Soemer load cell;

Displacement sensors: Novotechnik displacement sensor from Germany, VOLFA displacement sensor from Germany, HBM displacement sensor from Germany, Trans Tek displacement sensor from the United States, MEAS displacement sensor from the United States, GFRAN displacement sensor from Italy, RDP displacement sensor from the United Kingdom, and MTS displacement sensor from the United States;

Pressure sensors: MSI pressure sensor from the United States, MEAS pressure sensor from the United States, NMB pressure sensor from Japan, BD sensor pressure sensor from Germany, HBM pressure sensor from Germany, Burster pressure sensor from Germany, FUTEK pressure sensor from the United States, Dytran pressure sensor from the United States, SENSYS pressure sensor from South Korea;

Temperature and humidity sensor: Austrian E+E temperature and humidity sensor;