【文章內(nèi)容簡(jiǎn)介】 ormance is stable, the year drifting quantity is smaller than %, warm floats is smaller than 177。%/10K, anti overloads strongly, may reach the measuring range several hundred times. The survey scope may from 0 to E+H Corporation and the American Kahlo Corporation product is at the leading position. The optical fiber application is send the material significant breakthrough, its uses in most early the optical munication techniques. In the optical munication use discovered works as environmental condition change and so on the temperature, pressure, electric field, magic field, causes the fiber optic transmission light wave intensity, the phase, the frequency, change and so on the polarization condition, the survey light wave quantity change, may know causes these light wave physical quantity the and so on quantitative change temperature, pressure ,electric field, magic field size, uses these principles to be possible to develop the optical fiber sensor. The optical fiber sensor and the traditional sensor pare has many characteri stics: Sensitivity high, the structure simple, the volume small, anti corrosive, the electric insulation good, the path of rays may be curving, be advantageous for the realization telemeter and so on. Optical fiber sensor Japan is in the advanced level. Like Idec Izumi Corporation and Sun x Corporation. The optical fiber send receiver and the integrated path of rays technology unify, accelerates the optical fiber sensor technology development. Will integrate the path of ray’s ponent to replace the original optics part and the passive light ponent。 enable the optical fiber sensor to have the high band width, the low signal processing voltage, the reliability high, the cost will be low. In semiconductor technology processing method oxygenation, the photo etc hang, the proliferation, the deposition, the plane electron craft, various guides corrosion and steams plates, the sputtering thin film and so on, these have all introduced to the sensor manufacture. Thus has produced each kind of new sensor, like makes the silicon micro sensor using the semiconductor technology, makes the fast response using the thin film craft the gas to be sensitive, the wet sensitive sensor, the use sputtering thin film craft system pressure transmitter and so on.. The Japanese horizontal river pany uses various guides’ corrosion technology to carry on the high accuracy three dimensional processing。 the system helps the silicon resonance type pressure transmitter. The core partially presses two resonant Liang by the feeling which above the silicon diaphragm and the silicon diaphragm manufactures to form, two resonant Liang39。s frequency difference correspondence different pressure, measures the pressure with the frequency difference method, may eliminate the error which factor and so on ambient temperature brings. When ambient temperature change, two resonant Liang frequencies and the amplitude variation are same, after two frequency differences, its same change quantity can counterbalance mutually. It’s survey most high accuracy may reach %FS. American Silicon Microstructure Inc.(SMI) the pany develops a series of low ends, linear in % to 65% scope silicon micro pressure transmitter, the lowest full measuring range is (1KPa), it makes take the silicon as the material, has the unique three dimensional structure, the light slight machinefinishing, makes the wheat stone bridge many times with the etching on the silicon diaphragm, when above silicon chip stress, it has the distortion, the resistance produces presses the anti effect but to lose the bridge balance, the output and the pressure bees the proportion the electrical signal. Such silicon micro sensor is the front technology which now the sensor develops, Its essential feature is the sensitive unit volume is a micron magnitude, Is the traditional sensor several dozens, several 1%. In aspect and so on industry control, aerospace domain, biomedicine has the vital role, like on the airplane the use may reduce the airplane weight, reduces the energy. Another characteristic is can be sensitive is small surveyed, may make the blood pressure pressure transmitter. The Chinese aviation main corporation Beijing observation and control technical research institute, the development CYJ series splashes thanks the membrane pressure transmitter is uses the ion sputtering craft to process the metal strain gauge, it has over e the nonmetallic strain gauge easily the temperature influence insufficiency, has the high stability, is suitable in each