When we provide solutions for devices, choosing the right product is a very important part. As for sensors, there are many types, such as weighing sensors, torque sensors, and pressure sensors. If not selected correctly, it will bring a lot of inconvenience to the subsequent work. Therefore, here, Jingchengpu editor will talk to everyone about the method of choosing sensors. Let's learn about it together!

 

 

1. Determine sensor type based on measurement object and measurement environment

To perform specific measurement tasks, we must first consider which sensor principle to use, such as weighing sensors, torque sensors, pressure sensors, displacement sensors, force sensors, display control instruments, etc. Although each sensor has similarities, there are still many significant differences. This needs to be determined after analyzing many factors, as there are pressure sensors with multiple principles to choose from even when measuring the same physical quantity.

 

Which type of sensor is more suitable? You need to consider the following specific issues based on the measured characteristics and the usage conditions of the sensor: the size of the range; Requirements for sensor volume at the measured location; Is the measurement method contact or non-contact; Signal extraction method, wired or non-contact measurement. After considering the above issues, you can determine which type of sensor to use and then consider the specific performance indicators of the sensor.

2. Sensitivity selection

Usually, it is desirable to have a higher sensitivity of the pressure sensor within its linear range. Because only when the sensitivity is high, the value of the output signal corresponding to the measured change is relatively large, which is beneficial for signal processing. However, it should be noted that the sensitivity of the sensor is high, and external noise unrelated to the measurement is easily mixed in, and it can also be amplified by the amplification system, thereby affecting the measurement accuracy.

3. Frequency response characteristics

The frequency response characteristics of pressure sensors determine the frequency range to be measured, and the measurement conditions must be maintained within the allowable frequency range without distortion. In fact, the response of sensors always has a fixed delay, and it is hoped that the delay time is as short as possible. The frequency response of pressure sensors is high, the measurable signal frequency range is wide, and due to the influence of structural characteristics, the inertia of mechanical systems is large, while the frequency of measurable signals is due to low-frequency sensors. In dynamic measurement, the response characteristics should be based on the characteristics of the signal (steady state, transient, random, etc.) to avoid excessive errors.

4. Stability

The ability of a sensor to maintain its performance unchanged after a period of use is called stability. In addition to the structure of the sensor itself, the factors that affect the long-term stability of a pressure sensor are mainly the sensor's usage environment. Therefore, in order for the force sensor to have good stability, the sensor must have strong environmental adaptability. Before selecting a sensor, please investigate its usage environment and then choose a suitable force sensor based on the specific usage environment, or take appropriate measures to reduce its impact on the environment.

Based on the points mentioned above, I believe that after reading it, you should know how to choose the appropriate force sensor. If you still have any questions, please feel free to contact our technical team.