Deducing Strength with Quality and Interpreting Value with Results
Working principle of water pressure sensor
Release time:2022-09-23
Water pressure sensor is a kind of pressure sensor often used in industrial production. It has a wide range of applications in industrial dynamic environment, water conservancy and hydropower engineering, transportation construction, production automatic control system, aerospace, shipping, transportation pipeline and so on.
Water pressure sensor is a kind of pressure sensor often used in industrial production. It has a wide range of applications in industrial dynamic environment, water conservancy and hydropower engineering, transportation construction, production automatic control system, aerospace, shipping, transportation pipeline and so on.
The working principle of water pressure sensor
The traditional method is to apply pressure directly to the sensing film, so that the small displacement of the film is proportional to the pressure, thereby changing the resistance of the sensor, and then detecting the change of the sensor through the electronic circuit, thereby generating a standard measurement signal corresponding to the pressure.
Static performance of water pressure sensor
The static performance of the water pressure sensor refers to the correlation between static input and output. In this case, the input and output are independent, so its static characteristics can be expressed by an algebraic equation without time variables, or a horizontal axis is used as input, and a characteristic curve is drawn with vertical coordinates. Linearity, sensitivity, hysteresis, repeatability and drift are important indicators to measure the static performance of the sensor.
(1) Linearity: To what extent, the true relationship curve between the output and input of the sensor deviates from the fitting line. The method is to define the ratio between the large error between the true characteristic curve and the fitted curve and the full output.
(2) Sensitivity: Sensitivity is an important indicator to measure the static performance of the sensor. It is defined as the increment ratio of the output to the corresponding input that caused it to increment. Sensitivity is denoted by S.
(3) Delay: When the input amount changes from small to large (forward stroke) and from large to small (reverse), the phenomenon that the input-output characteristic curve of the sensor is inconsistent becomes a delay. When the input signal size is the same, the amplitude of the output signal before and after the two strokes is inconsistent, which is the delay error.
(4) Repeatability: When the input signal changes several times continuously in the same direction, the inconsistency of its characteristic curve.
(5) Displacement: When the input signal remains unchanged, the output of the sensor will shift over time. Drift is mainly caused by two factors: first, the structural parameters of the sensor; second, environmental factors such as temperature and humidity.
Dynamic properties of water pressure sensor
The so-called dynamic characteristics are the characteristics of the input and output of the water pressure sensor. In practical applications, the dynamic behavior of the sensor is generally expressed by the response to a specific standard input signal. This is because the sensor can easily obtain the standard input signal experimentally, and its reaction to the standard input signal is related to its reaction to the input signal, and it is well known that the former can be derived from the latter. Generally, two forms of step and sine wave are used, so the dynamic performance of the sensor generally adopts step response and frequency response.
Keywords:Water pressure sensor
Related News
Manufacturer supply
Support customization
Quality rest assured
Fine processing
After-sales team
Add: Guangdong Province,China