Description

Mini Wind Speed Sensor 200KM/H 2-Wire Self Power Generation Air Velocity Transducer

Description:
- This wind speed sensor is assembled with a specially customized power generation sensor and a three-cup rotating wind cup. Its working principle is that when there is horizontal flowing wind in the environment, the specially structured wind cup can generate a fixed direction of rotation and drive the built-in sensor to generate voltage, which is proportional to the rotation speed. By utilizing the voltage variation of this signal, the environmental wind speed can be measured.
- The maximum allowable environmental wind speed for this sensor is 200KM/H, and the maximum output voltage does not exceed 4V. The rated operating range is less than 100KM/H wind speed. Under normal circumstances, the output voltage is 0-2V.
- This sensor is a self-generating type and does not require power supply. When there is wind rotation, it generates a voltage signal.
- This wind speed sensor is a simple structure with average accuracy and is only suitable for various controllers to compare environmental wind speed detection and collect signal voltage values for control purposes. It is not suitable for applications at the meteorological forecasting level.
- The product should be installed in a horizontal position to ensure that the installation position is not prone to water accumulation and is easy to detect in the environmental wind speed. The finished product has rainproof function, but does not prevent soaking in rainwater. The signal output line is about 3 meters long, and when it needs to be extended, it can be connected according to the corresponding color. The finished product has a height of approximately 6.5CM and a rotating diameter of approximately 14CM.

Wiring definition: The black line with white stripes represents the signal voltage output (0-2V, maximum not exceeding 4V, can be directly connected to the AD analog port of the 5V microcontroller system), and the black line represents GND, which is grounded with the microcontroller circuit.

This wind speed sensor consists of a base motor and three cup rotating components that are inserted tightly:
- The base component is made of ABS injection molding technology, with a chassis diameter of 46MM. It is fixed by three holes with a radius of 18MM and a diameter of 6MM distributed at 120 degrees. Three M5 or M6 bolts can be used for fixation. The power generation sensor is fixed in the base, and the signal wire is a two core wire with a default length of about 3 meters. The signal wire is a double parallel wire, with black with white stripes indicating the signal voltage and pure black indicating GND.

The corresponding calculation formula for wind speed and signal output voltage:
- In microcontroller program applications, the corresponding wind speed can be approximately calculated using the following formula:
  Firstly, the signal voltage value output by the sensor should be determined, in volts.
  Voltage (V) * 50=KM/H (wind speed)
  Voltage (V) * 14=M/S (wind speed)
- If the current output signal voltage is 0.5V, it indicates that the current wind speed is about 25KM/H or about 7M/S.
- If it is only used as a threshold value in the controller for comparison, the voltage comparison method can be directly used.

The following is a table of the voltage and wind speed corresponding to the wind speed sensor:

The horizontal axis represents the wind speed value (M/S) in meters per second, and the vertical axis represents the output signal voltage value (V)

Precautions:
- It should be firmly and horizontally installed at a high position that is easy to detect environmental wind, but not higher than the lightning protection device. There should be no large objects nearby that hinder wind flow, and the installation site should not be easily soaked in water to damage the internal sensor. The outlet wire should be fixed to avoid blocking the rotation of the wind cup. Regularly check if the installation screws are loose. Do not insert or unplug the fan blades on your own to avoid damage.

Package Included:
- 1 x Wind Speed Sensor