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Three of modern information technology is based on information collection (sensor technology), information transmission (communication technology) and information processing (computer technology). Sensor belongs to the forefront of cutting-edge information technology products, especially the temperature sensor is widely used in industrial and agricultural production, scientific research and life, and other fields, high quantity first of all kinds of sensors. At present, the international new type of temperature sensor is from analog to digital, from integration to develop in the direction of intelligent, networked Analog integrated temperature sensor Integrated sensor is made using silicon semiconductor integrated process and, therefore also called silicon sensors or monolithic integrated temperature sensor. Analog integrated temperature sensor is introduced in the 1980 s, it is will be integrated on a chip, temperature sensor can complete the function of temperature measurement and simulation signal output special IC. The main characteristic of analog integrated temperature sensor is a single function (measurement temperature only), temperature measurement error is small, low prices, fast response speed, long transmission distance, small size, low-power, etc., suitable for remote temperature measurement, temperature control, nonlinear calibration, don't need to do a simple peripheral circuits. It is currently at home and abroad has been widely applied in the integrated sensor, typical products are AD590, AD592, TMP17, LM135, etc. Analog integrated temperature controller Analog integrated temperature controller mainly includes the temperature control switch, programmable temperature controller, the typical products are LM56, AD22105 and MAX6509. Some enhanced integrated temperature controller also includes A/D converter and cure good program, which has some similarities with intelligent temperature sensor. But its own system, work is not controlled by microprocessor, this is the primary difference between the two. Intelligent temperature sensor Intelligent temperature sensor (also called digital temperature sensor) came out in the mid - 1990 - s. It is microelectronics technology, computer technology and automatic test technology (ATE) crystallization. At present, the world has developed a variety of intelligent temperature sensor series products. Intelligent temperature sensor internal contains temperature sensor, A/D converter, signal processors, memory (or register) and interface circuit. Some products with multi-channel selector, a central controller (CPU), random access memory (RAM) and read-only memory (ROM). The characteristics of the intelligent temperature sensor is able to output the temperature control of the temperature data and relevant quantity, adapter various microcontroller (MCU); And it is on the basis of the hardware through software to achieve the function test, its intelligent degree also depends on the development level of the software. After entering the 21st century, intelligent temperature sensor is high accuracy, multi-function, bus standardization, high reliability and security, development of virtual sensor and network sensor, single-chip temperature measurement system, such as the direction of the high-tech developing quickly. Focus is to improve the temperature measuring accuracy and resolution, increase test function, standardization and normalization of bus technology, the reliability and safety design of the virtual temperature sensor and temperature sensor network. Relevant search: temperature sensors, dongguan dongcheng power sensors, guan city power sensors, south side temperature sensor, temperature sensor in shenzhen, dongguan, capacitor, dongguan power sensors, foshan capacitor |