Sensor technology is the important segment that implements test and automation. In testing a system, be regarded as appearance fixed position, its are main the feature is can accurate deliver and detect the information that gives some form, change its into the information of another configuration.
Specifically sensor is to show the information with the certain some of those pairs of objects that be measured is had experience (or answer) give a function with check, make change into according to definite pattern to it yuan of corresponding parts of an apparatus that can output signal or device. If do not have sensor to undertake to the original message that is measured accurate and reliable capture and change, all accurate tests and control will not come true, although the modernest computer, without accurate information (or the data with reliable changeover) , do not break true input, also will not produce its due effect adequately.
Sensor sort and breed are various, the principle is sundry also. Among them sensor of resistance strain type is be used extensively at electronic balance to mix the device measuring power of all sorts of new-style orgnaizations, its precision and limits are spent is according to needing to come the exorbitant precision of make choice of asks to be used to some kind also do not have too great sense, too wide range is spent also can make measure loss of accuracy, and can cause cost exorbitant reach the difficulty that increases craft to go up, accordingly, should the requirement according to measuring an object, it is crucial that appropriate choice precision and limits are spent. But the sensor that no matter why be planted,condition, circumstance uses, all ask its performance is steady, data is reliable, wear well. For this, researching high accuracy sensor while, must take the research of dependability and stability seriously. Current, include a bed dark implement research, design, trial-produce, production, detect wait with application all content inside sensor technology, already formed a relatively independent special course gradually.
Usually, because the place of sensor setting is not ideal, below the combined influence of the effect such as temperature, humidity, pressure, can cause the change of sensor zero shift and sensitivity, already became the serious problem in using. Although people is in process of the sensor that make, took temperature compensation and sealed and moistureproof step, but it and meet an emergency piece, those who stick post glue itself those who stick post technology is glad to can be changed, accurate of the choice with material of skilled, elastomer and craft of cold, hot-working make all have close relationship, which cannot be ignored on one hand, need elaborate design and make. In the meantime, still need the installation method that notices sensor, the setting of the structure that prop up, how to overcome the problem such as transverse force.
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