Hall Effect Speed Sensor 2: A Comprehensive Guide

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The Hall effect speed sensor 2 is an advanced sensor used to measure the speed of rotating objects, such as the wheels of a vehicle. It works on the principle of the Hall effect, which is the production of a voltage difference (Hall voltage) across an electrical conductor, transverse to an electric current in the conductor, when a magnetic field is applied perpendicular to the current.

Technical Specifications of Hall Effect Speed Sensor 2

  1. Operating Voltage: The Hall effect speed sensor 2 operates on a voltage range of 4.5V to 5.5V, making it suitable for use in most automotive and industrial applications. The sensor has a typical operating voltage of 5V and a maximum current consumption of 10mA.

  2. Output Signal: The sensor produces a digital output signal that can be easily interfaced with microcontrollers and other digital systems. The output signal is a square wave that changes state every time a magnet attached to a rotating object passes by the sensor. The output signal has a typical rise and fall time of less than 1 microsecond, allowing for accurate speed measurements.

  3. Sensing Range: The Hall effect speed sensor 2 has a sensing range of up to 25,000 RPM, making it suitable for use in high-speed applications such as high-performance vehicles and industrial machinery. The sensor can detect the passing of a magnet with a frequency of up to 208.33 kHz.

  4. Temperature Range: The sensor can operate in temperatures ranging from -40°C to +125°C, making it suitable for use in harsh environments. The sensor has a typical operating temperature range of -40°C to +125°C and a storage temperature range of -40°C to +150°C.

  5. Magnet Type: The Hall effect speed sensor 2 requires a permanent magnet to operate. The magnet should be mounted on the rotating object in such a way that it passes close to the sensor during each rotation. The sensor can detect the presence of a standard disc-shaped permanent magnet with a diameter of 6-10 mm and a thickness of 2-4 mm.

  6. Dimensions: The Hall effect speed sensor 2 has a compact size, measuring approximately 12 mm x 8 mm x 5 mm. The sensor is typically housed in a plastic or metal enclosure to protect it from environmental factors.

  7. Mounting: The sensor can be mounted using various methods, such as screws, adhesive, or snap-fit mechanisms. The mounting method should ensure that the sensor is positioned close to the rotating magnet, with a typical air gap of 0.5-2 mm.

  8. Electrical Connections: The Hall effect speed sensor 2 typically has three electrical connections: power supply (VCC), ground (GND), and output signal (OUT). The sensor can be easily integrated with microcontrollers and other digital systems using these connections.

  9. Accuracy: The Hall effect speed sensor 2 has a typical accuracy of ±0.1% of the measured speed, ensuring reliable and precise speed measurements.

  10. Reliability: The sensor is designed for long-term reliable operation, with a typical mean time between failures (MTBF) of over 1 million hours.

DIY Approach: Interfacing Hall Effect Speed Sensor 2 with Arduino

hall effect speed sensor 2

To use the Hall effect speed sensor 2, you can follow a DIY approach by interfacing it with an Arduino microcontroller and a TinyScreen+ display. Here’s a step-by-step guide:

  1. Connections:
  2. Connect the Wireling TinyShield to the TinyScreen+.

  3. Use the long 5-pin Wireling cable to connect the Hall-Effect Sensor to Port 0 on the Wireling TinyShield.

  4. Software:

  5. Open your Arduino IDE and select the TinyScreen+ from Tools -> Board.

  6. Confirm that you are connected to the correct port by navigating to Tools -> Port and selecting the port that contains “TinyScreen+”.

  7. The Code:

  8. Download the code and required dependencies from the above Software section.

  9. Modify the constant parameters located at the beginning of the program, such as the wheel diameter, to produce accurate results.

  10. Hardware:

  11. Place the disc magnet on a rotating wheel, and mount the Hall Sensor in such a way that the magnet will come very close to the front with every rotation.
  12. Mount the TinyScreen+ wherever you prefer the viewing angle.

By following these steps, you can build your own speedometer using the Hall effect speed sensor 2 and an Arduino microcontroller. The TinyScreen+ display will provide a visual representation of the measured speed, allowing you to monitor the performance of your rotating system.

Conclusion

The Hall effect speed sensor 2 is a versatile and reliable sensor that can be used in a wide range of applications, from automotive to industrial. Its advanced technical specifications, such as high-speed sensing, wide temperature range, and digital output, make it a popular choice for DIY projects and professional applications. By following the steps outlined in this guide, you can easily integrate the Hall effect speed sensor 2 with an Arduino microcontroller and create your own custom speedometer or other speed-related projects.

References

  1. Arduino Speedometer Using Hall Sensor and Magnet – TinyCircuits. Retrieved from https://tinycircuits.com/blogs/learn/arduino-speedometer-hall-sensor-magnet
  2. Hall Effect Speed Sensors Explained – YouTube. Retrieved from https://www.youtube.com/watch?v=n_rF8_zdOx4
  3. Vehicle hall effect sensor (speed sensor) – Arduino Forum. Retrieved from https://forum.arduino.cc/t/vehicle-hall-effect-sensor-speed-sensor/162141
  4. Hall Effect Sensor Datasheet – Allegro MicroSystems. Retrieved from https://www.allegromicro.com/en/products/sense/hall-effect-sensor-ics/zero-speed-switch-ics/a1101-a1102
  5. Hall Effect Sensor Applications – Honeywell. Retrieved from https://sensing.honeywell.com/hall-effect-sensor-applications