In the early application and selection of sensors, how to choose is a very important point, and the selection is smooth, and the following will briefly talk about how the sensor is selected in the early stage.
The use of sensors in practical operation is relatively common, and it may be applied to the needs of various situations in different industries and fields. No matter how good the instrument is, there is a quality of the instrument itself, and in order to reduce the presentation of errors in the measurement process, the user needs to choose a good quality sensor with a good quality. How do you judge the quality of a sensor that is good or bad? Here's how to do it:
1. The choice of acuity
In the linear field of the Beacon Sensor, it is expected that the higher the sensitivity of the Beacon Sensor, the better. Because only when the acuity is high, the value of the output cipher corresponding to the measured change is compared with the Chinese New Year's Eve, which is conducive to the disposal of the cipher. However, it should be noted that the sensitivity of the sensor is high, and the external noise related to the measurement is also easy to mix, and the system will also be reduced, which will affect the measurement accuracy. Therefore, it is implored that the P+F sensor itself should have a high signal-to-noise ratio, and the factory disturbance flag code imported from the outside world should be increased. The acuity of the P+F sensor is non-directional. When the measured is a one-vector quantity and the bias is high, other P+F sensors with low bias and acuity should be selected. If the measured vector is multi-dimensional, the smaller the cross-acuity of the sensor, the better.
2. Frequency corresponds to the characteristics
The frequency correspondence characteristics of the sensor determine the frequency field to be measured, and it is necessary to adhere to the true measurement conditions in the allowable frequency range, in fact, there is always a certain delay in the sensor's care, and the shorter the delay time, the better.
The frequency of the P+F sensor should be high, and the frequency range of the flag code that can be measured is wide, and because of the influence of structural characteristics, the inertia of the machine system is higher than that of the Chinese New Year's Eve, because there is a low frequency sensor that can measure the frequency of the flag code. In static measurements, the characteristics should be taken into account according to the characteristics of the flag code (steady-state, transient, random, etc.) to avoid excessive errors.
3. Linear field
The linear domain of the sensor is the field where the output is proportional to the input. In practice, acuity is a fixed value in this field. The wider the linear field of the sensor, the more Chinese New Year's Eve its range will be, and the measurement accuracy will be guaranteed. When selecting a sensor, when judging the current type of sensor, the first thing to look at is whether its range can be satisfied. In reality, however, no sensor can afford to be relatively linear. When the required measurement accuracy is relatively low, in a certain field, the sensor with a small nonlinear error can be approximately regarded as linear, which will bring a very Chinese New Year's Eve to the measurement.
4. Stability
After the sensor has been used for a period of time, its ability to maintain stability is called stability. In addition to the structure of the sensor itself, the most important factor affecting the temporary stability of the sensor is the application status of the sensor. Therefore, in order for the sensing to have excellent stability, the sensor must have a strong ability to adapt to the situation.
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