Sensor application is very at present wide, and the maturity as the technology, scientific progress, all sorts of products also are development can be changed in Xiang Zhi, undertook upgrading e.g. sensor, the occurrence of sensor of intelligent temperature and humidity, the function that lets sensor is come out by better play.

 

Sensor gets the main tool of information as a kind, in industry the domain such as production, science and technology is producing major effect. But the swift and violent development as microprocessor technology and measure the development that controls systematic automation, intelligence to change, traditional sensor already was united in wedlock with all sorts of microprocessor photographs, join a network repeatedly, formed contain information to detect, the intelligent sensor of a series of functions such as signal processing, logistic thinking.

 

 

Intelligent sensor (Intelligent Sensor) it is the sensor that has information processing function. Intelligent sensor contains microprocessor, have collect, the processing, ability that exchanges information, it is sensor compositive turn the result that combines with microprocessor photograph. Compare with general sensor, intelligent sensor has the following 3 advantages: The information that can realize high accuracy through software technology is collected, and cost is low; Have capacity of certain process designing automation; Functional diversification.

 

Get the tool of information as the mankind, sensor is the main component of contemporary IT. What the sensor on traditional sense outputs is imitate quantity signal more, itself does not have signal processing and group net function, handle and transmit a function what need to join specific measuring instrument expresses ability to finish signal. Intelligent sensor can interiorly implementation is handled to the treatment of primitive data, and can pass standard interface and switch of outside implementation data, and the job that controls change sensor through software according to real need, realize intelligence to change thereby, network. Because use interface of standard bus line, intelligent sensor has good open sex, expansibility, the extension that gives a system brought very large development space.

 

Intelligent sensor is one kind can is opposite the some information of the object that be measured is had experience, the function that check gives; Can judgement of study, inference processes signal; Have communication and a kind of when govern a function new-style sensor. Intelligent sensor has automatic school 0, demarcate, compensation, gather the capability such as data. Its ability decided intelligence changes sensor to still have taller precision and resolution, taller stability reachs dependability, better adaptability, photograph comparing still has very high gender price to compare at traditional sensor.

 

 

The intelligent temperature sensor that in 20 centuries 90 time metaphase rolls out the earliest, those who use is 8 A/D converter, its measure lukewarm precision inferior, resolution can achieve 1 degree only. Abroad already rolled out the intelligent temperature sensor of a variety of high accuracy, high resolution in succession, what what use is 9~12 A/D converter, resolution can amount to 0.5~0.0625 to spend commonly. By company of American DALLAS semiconductor the DS1624 of new development high resolution divides intelligent temperature sensor, can output data of 13 binary systems, its resolution is as high as 0.03125 degrees, measure lukewarm precision to be losing 0.2 degrees. To raise the changeover rate of sensor of temperature of much passageway intelligence, also some chip use high speed successive to approach type A/D converter. It is with sensor of temperature of intelligence of AD7817 5 passageways exemple, it is right this locality sensor, the changeover time of sensor of Cheng of each great distance is 27US only respectively, 9US.

 

The test function of sensor of new-style intelligence temperature also is increasing ceaselessly. For example, DS1629 single-track temperature is passed feeling increased clock of real time calendar (RTC) , make its function more perfect. DS1624 still increased memory function, use chip interior the E2PROM memory of 256 byte, can store the short message of the user ceases. Additional, intelligent temperature sensor is developing to the direction of much passageway from only channel, this is measured to develop and develop multichannel temperature accused a system to create good condition.

 

Intelligent temperature sensor has a variety of job mode to be able to offer an alternative, basically include sheet second changeover mode, successive changeover mode bides his time mode, some still raised microtherm limit patulous mode, the operation is very handy. To sensor of certain intelligence temperature character, lead plane (exterior small implement or odd a machine) still can come through corresponding register its A/D changes set rate resolution and time of the greatest transition.

 

The bus line technology of intelligent temperature sensor also realized standardization, standardization, introduces bus line basically has single track (1-WIRE) bus line, i2C bus line, SMBUS bus line and SPI bus line. Temperature sensor serves as from machine can have communication through interface of special bus line and lead plane.

 

The occurrence of these new-style functions, can let sensor of intelligent temperature and humidity have more functions, can pair of better temperature and humidity undertake monitoring, better serve for us, came true to intelligence is changed and be standardized, to production the job brought huge advantage. So as a whole, sensor of intelligent temperature and humidity has numerous function, it is manufacturing need is indispensable.