More information about Non-contact water level sensor

Non-contact water level sensor

Introduction of non-contact spacer water level sensor

Sepstar non-contact water level sensor is used in all kinds of home appliances, such as oven, water tank, coffee machine, soybean milk machine, fructose machine and other related liquid detection, fluid detection category. In addition, in industry, agriculture, environmental protection and other intelligent equipment with water or liquid participation can be added to the intelligent detection of the water level sensor.

With the rapid development of science and technology, water level detection technology is also constantly improving. From the traditional mechanical, such as lever float, electromagnetic, reed tube signal detection, etc., to the current capacitive sensing and other new detection technologies, greatly improve the performance of water level detection and application convenience.

The traditional water level detection method needs to place the water detector or sensor in the water, or push the different contact points of the reed tube with the level of the water level through the float ball to achieve the purpose of water level detection. These have high requirements for product structure, high cost, easy damage of water testing equipment, and short service life.

Sepstar non-contact water level detection technology solves the above pain points, with non-contact, easy to use, low cost, long service cycle and other advantages. Sepstar non-contact water level detection technology, based on the built-in MCU special capacitor sensing water level detection hardware circuit, with AI intelligent algorithm, plus a visual, user-friendly simple human-machine interface, no need to detect the inside of the liquid, no need to external sensors, PCB board does not need to contact with water, can allow 4-8mm thickness insulation material, In the case of 1-3mm air gap, the water level detection is realized.

Basic instructions:

1. Attach the spacer water level detection plate tightly to the wall of the water container.
2. Connect the 5V POWER supply in the power interface, and the power light is steady on, indicating that the power supply is normal.
3. Use USB to TTL serial port tool to connect with the computer, and cooperate with the upper computer software of the water level detection board to carry out real-time interface data Kanning board and function debugging.

The principle of water level detection.

1, the change of the medium between the PCB and the container will cause a small change in the capacitance.

2, the board space water level detection development board has a very high capacitance detection sensitivity, can detect small capacitance changes caused by water level changes.

3, the board space water level detection and development board has about 2-3mm space (air) capacity, and has high fault tolerance for structure and installation.

4. It can effectively deal with the changes brought about by the accumulation of scale. (The initial value can be re-checked to cope with various changes)

5, the thickness of the water container reaches 6mm.

Software interface

1. Different sensitivity levels can be set

The different sensitivity is mainly manifested in the different sensitivity of the water level detection copper foil to the water level change, that is, how high the water is covered by the copper foil can be judged as water. As can be seen from the figure below, the higher the sensitivity setting, the lower the position of the copper foil determined by the system.

2. You can set the percentage of high and low valid values for each water level

After the capacitance change value of each PAD is fixed in the distance of various parameters, the maximum change value read back is 100%, and then the effective water level at each place can be defined. It includes a calibrated percentage value when the water level is falling or a configurable percentage value when the water level is rising.

3. You can view the current real-time data value of each water level

When the space water level sensor defines 3 water levels, three sets of integer data will be transmitted to the upper computer interface in real time, and the real-time percentage ratio data will also be displayed on the interface.

4. The empty water level check value and full water level check value can be read at one time

When the clean water level detection interface software is run for the first time, it will read the information of the lower computer board, if the lower computer board is not short, full water check program, the interface will prompt the initialization check function to ensure that the correct response can be obtained during the formal water level spacing test.