How to check status of a 12V dc motor that it is running or it is stopped.?
Please tell me that any sensor, any circuit or any other device which I can use to check my motor current status.
I am working on a "conveyor belt operational interlocking using atmega32" project for my semester. The main objective of project is "operational interlocking".

 

Hello,

What do you want to detect?
Do you want movement of the shaft of the motor to be detected?
Do you want to detect the movement of the conveyor belt?

Bertus

 

If you need to "check my motor current status" then you best check the current thru your motor.

Hall sensor, restive sensor such as a high line sensor (Google these terms), whatever.

Measure the current then you know what the current is.

 

Shaft of the motor.

Hello,

What do you want to detect?
Do you want movement of the shaft of the motor to be detected?
Do you want to detect the movement of the conveyor belt?

Bertus

 

Hello,

Have a look at the section "Interrupters, Photo-Reflective Sensors, Proximity and Hall Effect Sensors" on the following page:
http://www.euclidres.com/motionSensors/motionSensors.html

Bertus

 

Another solution is a slotted disc on the shaft and a slot-opto device, this is how many of the treadmill motors detect it.
If it is constant rpm and fairly high rate, a 1 or 2 slot wheel would suffice.
Max.

 

The sensors require proper placement or alignment to work accurately, to avoid this Is there any other way to check the motor running or stopped.?

Hello,

Have a look at the section "Interrupters, Photo-Reflective Sensors, Proximity and Hall Effect Sensors" on the following page:
http://www.euclidres.com/motionSensors/motionSensors.html

Bertus

 

If you don't want to use the slot opto and disc, there is also the ACS712 current sensor which are on ebay for around $1.20.
Max.

 

The sensors require proper placement or alignment to work accurately, to avoid this Is there any other way to check the motor running or stopped.?

Yes. READ THE CURRENT thru the motor.

For a given voltage the current when free running will be less than the current with some mechanical load, which is less than the current when the motor is stalled.

 

Does ACS712 work with 12V DC.?

If you don't want to use the slot opto and disc, there is also the ACS712 current sensor which are on ebay for around $1.20.
Max.

 

5Vdc see the Allegro ACS712 data on the IC.
Max.

 

Does ACS712 work with 12V DC.?

12 VDC where? Have you read the data sheet for this device?

 

Does ACS712 work with 12V DC.?

Although it is powered from 5vdc you can monitor the current in any conductor regardless of voltage as there is isolation between the motor and the IC.
Max.

 

I meant line voltage to be 12V dc.

12 VDC where? Have you read the data sheet for this device?

 

Thank you all.
I tried with the coding but did not get good results using ACS712 5A. Might be it was some coding problem. Now I have used some relay to detect the current flowing or not.

 

Thank you all.
I tried with the coding but did not get good results using ACS712 5A. Might be it was some coding problem. Now I have used some relay to detect the current flowing or not.

I have successfully used ACS712 5A, 20A and 30A sensors with PIC microcontrollers and mikroC PRO PIC to read both AC and DC currenct. If you are interested I will share my code. I can write a code for you if you are using PIC or AVR micocontrollers.

Reading the current through the motor circuit will be the best, simpler and easiest method to detect if motor is running or not.