LY-23

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Magnetic sensors have become a part of everyday life and are used in the development of new technologies. They measure the distance, velocity, and orientation of a target by detecting the magnetic field it produces. The LY-23 is a type of magnetic sensor for position, proximity, and speed that use a Hall effect principle to measure the displacement of permanent magnets and electrical flux variations due to magnetic field changes.

LY-23 Application Field

The LY-23 magnetic module has a wide range of applications, from velocity and displacement measurements in industrial automation or motor control, to contactless linear position or proximity measurements, or detection of angular movement or rotational speed. This module is suitable for applications such as robotic arm motion control, brushless DC motor commutation, robotic motion control, vibration sensing, AI toys, ultrasound equipment, flow meters, fill level gauging, and industrial automation systems.

Typically, the LY-23 module will be used as part of a larger system, with other sensors and devices such as an MCU (microcontroller) or a PC board, to process and display the measurements. It typically works as a feedback loop or servo system, enabling accurate and precise measurements and control.

LY-23 Working Principle

The LY-23 module is a type of magnetic sensor that uses an inductive Hall effect principle to measure the displacement of a permanent magnet, and detects changes in the magnetic field due to electrical flux variations. This sensor comprises of three main elements: a Hall element, a DC power supply, and a magnetic field source (typically a permanent magnet).

When a magnetic field is present and the module is in motion, the Hall element senses the changes in magnetic field due to the movement of the magnet in relation to the sensor. This operation is symmetric, meaning that the sensor is equally sensitive to both magnet movement towards and away from the sensor. The Hall element then generates a voltage that is proportional to the magnetic field strength. This voltage is then read and processed by a microcontroller (MCU) to turn the measurement into a value that can be used by a system. Typically, the MCU will convert the voltage signal into a digital value that can be used by the system.

In addition, the LY-23 module is equipped with an opto-isolator to protect against overvoltage and makes possible safe plug and play operation. The opto-isolator also offers the advantage of electrical insulation between the Hall element and the controller interface, ensuring that the system does not suffer from electrical interference while also extending its life.

The LY-23 takes power from a DC source and has an operating temperature range of -30°C to +125°C. It has a wide input range of 4V to 16V. The housing of this module is made of plastic, providing reliable protection against heat, dust, and humidity. The module has a standard-sized foot print with a convenient mounting method.

Conclusion

The LY-23 magnetic position, proximity, and speed module is an ideal and cost-effective solution for various applications such as robotic arm motion control, vibration sensing, brushless DC motor commutation, robotic motion control, AI toys, fill level gauging, and industrial automation. It provides accurate and precise measurements thanks to the use of the Hall effect principle. With the addition of an opto-isolator for protection against overvoltage and provide electrical insulation, it offers reliable and safe operation with a wide input power range and an extended operating temperature.

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