The performance indicators of the sensor are key factors in evaluating the quality and applicability of the sensor. The following is a detailed explanation of these performance indicators:
Sensitivity
Sensitivity is an indicator of the sensitivity of the sensor to changes in the measured quantity. It is usually defined as the ratio between the change in the output signal of the sensor and the change in the measured quantity. For example, a highly sensitive sensor can more accurately detect tiny changes in the measured quantity and convert them into corresponding output signals. In practical applications, high sensitivity means that the sensor can provide more accurate data, thereby helping users better understand and control the measured quantity.
Frequency range
The frequency range refers to the frequency range in which the sensor can work normally. Within this range, the sensitivity of the sensor and the stability of the output signal can be guaranteed. The lower and upper limits of the frequency range represent the lowest and highest frequencies that the sensor can detect, respectively. Choosing a sensor suitable for the frequency range is crucial to ensure the accuracy and reliability of the measurement results.
Dynamic range
The dynamic range refers to the range between the maximum and minimum measured quantities that the sensor can measure. It reflects the sensor's ability to work at different measured levels. Within the dynamic range, the output voltage of the sensor maintains a good linear relationship with the measured quantity. Therefore, a sensor with a larger dynamic range can adapt to a wider range of measurement needs and provide more comprehensive data.
Phase shift
Phase shift refers to the phase lag of the output signal relative to the input signal when the input signal changes. The magnitude of the phase shift affects the accuracy and stability of the sensor output signal. Ideally, the phase shift of the sensor should be zero or constant to ensure the real-time correspondence between the output signal and the measured value. In practical applications, it is necessary to select a sensor with a smaller phase shift to improve measurement accuracy.
In summary, the performance indicators of the sensor include sensitivity, operating frequency range, dynamic range, and phase shift. These indicators jointly determine the performance and quality of the sensor, which is of great significance for selecting a suitable sensor and ensuring the accuracy of the measurement results.
