Development trends of Senors

The three modern IT based information collection (ie, sensor technology), information transfer (communication technology) and information processing (computer technology). Sensors belonging to the forefront of cutting-edge IT products, especially temperature sensors are widely used in the field of industrial and agricultural production, scientific research and life, the highest number of the first of a variety of sensors. The development of the temperature sensor has gone through the following three stages;
(1) the traditional discrete temperature Co sensor| (including sensitive components);
(2) analog integrated temperature sensor / controller;
(3) Smart temperature sensor. The new temperature sensor is integrated from analog to digital, by the direction of intelligent, network development. The first launch of the smart temperature sensor in the mid-1990s, the use of the eight A / D converter, the low temperature measurement accuracy and resolution of only 1 ° C.
Abroad has launched a variety of high-precision, high-resolution intelligent temperature sensor used is 12 A / D converter resolution usually ranging from 0.5 to 0.0625 ° C. DALLAS Semiconductor developed the DS1624 high-resolution intelligent temperature sensor can output 13-bit binary data, the resolution of up to 0.03125 ° C, a temperature accuracy of ± 0.2 ° C. Order to improve the conversion rate of the multi-channel intelligent temperature sensor, and some chips with high-speed successive approximation A / D converter. AD7817 type 5 channel intelligent temperature sensor.
For example, its local sensors, each road remote Sensor conversion time of only 27us 9us. The rapid development into the 21st century, intelligent temperature sensor is moving in the direction of the high-precision, multi-function bus standardized, high reliability and safety, the development of virtual sensors and network sensors, developed single-chip temperature measurement system and other high-tech. Currently, smart temperature sensor bus technology standardized bus used mainly singlet (1-Wire) bus, I2C bus, SMBus bus and spI bus. Temperature sensor manufacturer as a slave can communicate through a dedicated bus interface with the host.
from:http://cpbay.wordpress.com/2012/06/29/development-trends-of-senors/