Speed ​​measuring principle of speed regulating multi-purpose oscillator
The speed multi-purpose oscillator is already a very mature product in the market, and everyone's awareness is very high. It is also widely used in biological, pharmaceutical, scientific research, environmental protection, medicine and other fields, but it is very extensive. Everyone is not too familiar with some of its principles. Let me introduce you to his speed measurement principle.
When using the digital display speed governing multi-purpose oscillator, the digital display can accurately measure the current speed of the book. So what is the principle?
In the speed regulation multi-purpose oscillator, we use a DC motor, which is the earliest motor and the first motor to achieve speed regulation. For a long time, DC motors have always occupied the statistical status of speed control. There are two main methods for measuring the speed of DC motors:
1. Photoelectric speed measurement method:
A grid disc and a photogate are used to form a speed measuring system. When the DC motor drives the grid disc to rotate through the transmission part, the speed measuring photoelectric gate obtains a series of pulse signals. These pulse signals are matched by two timer/counters of the microcontroller, one count, one timing. Calculate the number of pulses per unit time m. After unit conversion, the speed of DC motor rotation can be calculated.
In the speed regulation multi-purpose oscillator, we use a DC motor, which is the earliest motor and the first motor to achieve speed regulation. For a long time, DC motors have always occupied the statistical status of speed control. There are two main methods for measuring the speed of DC motors:
1. Photoelectric speed measurement method:
A grid disc and a photogate are used to form a speed measuring system. When the DC motor drives the grid disc to rotate through the transmission part, the speed measuring photoelectric gate obtains a series of pulse signals. These pulse signals are matched by two timer/counters of the microcontroller, one count, one timing. Calculate the number of pulses per unit time m. After unit conversion, the speed of DC motor rotation can be calculated.
2. Hall effect principle speed measurement method:
The motor shaft drives the magnetic steel on the shaft to rotate, thereby changing the size of the magnetic field, converting the magnetic field change into a pulse signal through the Hall circuit, and amplifying and shaping to output a rectangular pulse signal. When the speed changes, the frequency of the output pulse changes, resulting in the speed at which the motor rotates.
We use more of the second Hall effect principle of velocity measurement. This method is simple in structure, low in failure rate, and easy to maintain. It is also a widely used DC motor speed measurement method on the market. Therefore, I think that everyone has a simple understanding of the speed measurement principle of the variable speed multi-purpose oscillator , and also has a new understanding in operation and use.
For more information you can also visit: http:// Http://
Wenzhou Celecare Medical Instruments Co.,Ltd , https://www.celecaremed.com