How To Measure Speed M/Min

Other Hardware Science and Measurement
62

Ahh sorry sir im wrong
so it's not the machine that moves, but the rotating cylinder... I want to measure the speed when the cylinder rotates, and want to place a proximity on the gear/wheel near the main motor, which drives the cylinder..

63

Well in the video you show, everything is moving very slow.
I don't know anything about your machine so you have to tell me how it works.
So how fast is the gear actually rotating on your machine?
My program may not work if it is moving too fast.

64

See in this video sir.. In 4:28 minute

My machine is like that , printing machine or flexo graphic printing or rotogravure.
The speed can be fast maybe until 50-80m/min but rare.
so the main motor moves the cylinder so that the cylinder can rotate as in the video. And I want to measure the rotation speed of the motor / cylinder with proximity.

65

In the previous video I showed the location of the proximity which will later be installed, maybe on the gear or wheel

66

I can't tell from the video how fast the gear rotates.

67

Can the maximum speed be 100m/min with proximity and Arduino?

68

Can the maximum speed be 100m/min with proximity and Arduino?

How may pulses is 100meters/min?

69

  1. m/min is the unit of printing machine speed measured. for example the speed is 50m/min, etc

  2. Yes the rotating cylinders or gear.

  3. My goal is to be able to find out the speed when the cylinder rotates which can be measured up to a speed of 100m/min. By using a proximity sensor

70

so it's not possible?

71

Yes it is possible but you need to know the maximum and minimum rotation speed of the gear and how many teeth are on the gear, otherwise you will just be wasting your time trying to make you code work.

72

So the maximum speed of the gear can reach 100m/min and the minimum speed is 0 when it doesn't rotate . I want to only use 1 tooth on the gear. And the gear I use is 80mm in diameter

73

Is the 80mm diameter of the gear the same size as the 100m/min cylinder?

What size is the cylinder?

74

Rotation speed is measured in RPM not m/min
Do you mean the gear speed is 100 RPM?
That would only be 1.667 revolutions/second
I don't know how you can only use one tooth but that would mean that the maximum pulse rate is 1.667 pulses /second.
So in 10 seconds the pulse count would be about 16.

Does that seem correct to you?

75

Sometimes processes care about the surface speed per minute, and 100RPM on a 1m circumference cylinder (318mm diameter cylinder) would deliver 100 surface m/min.

An 80mm dia cylinder has a 0.251m circumference and would need to spin at 397RPM to deliver 100M/min

76

Rpm = m/min / 3.14 * D
So, m/min = RPM * 3.14 * D right?

77

Okay sir.. Then what do we do with the Arduino program? Is it like in the post #30? Determine the pulse number?

78

Yes, so what is D?

79
  • D is the diameter of the rotating object (meters)
80

What is M/Min To Rpm?

M/Min to RPM is a conversion from meters per minute to revolutions per minute. This is often used in mechanical engineering to measure the speed of rotation of a mechanical component. Meters per minute measures linear speed, or how fast an object is moving in a straight line, while revolutions per minute measures rotational speed, or how fast an object is spinning around an axis. The conversion between these two units of speed depends on the circumference of the rotating object.

81

So how may meters is the gear?