The tuning fork level switch is a kind of equipment widely used in the field of industrial automation, and its core principle is to use the vibration frequency change of the tuning fork to detect the liquid level. So, how is the vibration frequency of the tuning fork level switch designed and fine-tuned?
We need to first understand the basic working principle of the tuning fork level switch. The tuning fork consists of two mutually coupled vibrating systems, and when the tuning fork is inserted into the liquid, the vibration frequency of the tuning fork changes due to the damping action of the liquid. This change is highly dependent on the type, concentration and level of the liquid. Therefore, by measuring the frequency of the vibration of the tuning fork, we can get the level information.
When designing the tuning fork level switch, we need to choose the appropriate vibration frequency according to the actual application scenario. Generally speaking, the higher the vibration frequency, the more accurate the detection of the liquid level, but at the same time, it will also increase the difficulty of the resonance of the tuning fork. Therefore, we need to make trade-offs and design according to actual needs.
For fine-tuning the vibration frequency of the tuning fork level switch, we can achieve it by adjusting the physical parameters of the tuning fork. For example, the tuning fork's natural frequency can be adjusted by changing its length, thickness, material, etc. In addition, we can also change the amplitude and phase of the vibration of the tuning fork by increasing or subtracting masses from it.
In addition to the adjustment of physical parameters, we can also fine-tune the vibration frequency through software algorithms. For example, the frequency characteristics of a tuning fork can be adjusted by digital signal processing of the vibration signal and the use of tools such as filters and notches.
In conclusion, the design and fine-tuning of the vibration frequency of the tuning fork level switch is a complex and critical issue. In practical applications, we need to design and fine-tune according to specific needs to achieve accurate and stable level detection.