I am trying to verify theoretical estimates of load distribution of a statically indeterminate frame.
We have steel 'bedplates' that machinery is mounted on and supported by (4), (6), or (9) rubber pads. We need to report the load at each pad and have a good correlation between the calculated reaction forces and FEA results.
We are using these (2000) Kg load cells: http://www.micelect.es/en/micelect-load-weighing-sensors/ccp-elevator-bed-frame-sensor which have shielding and:
RED +Vdc BLACK -Vdc GREEN + SIGNAL YELLOW - SIGNAL
The distributor does not speak english so we are limited in our support as far as additional details on the load cell for now but I have a MEGA2560 and am trying to understand and use the analogReadGain() or analogReadDiff() commands to get usable readings that i can calibrate with known weights.
I have read the reference on analogread() and am using these two resources to guide me:
I would appreciate any suggestions in general but in particular with the following:
- Would it be correct for me to connect the load cell RED and BLACK to the 2560 5V and GND respectively? What about the shielding?
- Would it be correct to connect the load cell YELLOW and GREEN to the GND and A0 pin on the 2560? Is there a better way of using the load cell -SIGNAL in this setup?
- How would i best safely set-up (9) load cells to be read individually?
- Once i have the load cells connected, which libraries do i need to include and how best would i apply them? I understand using the internal reference voltage will give me better resolution
I am a mechanical engineer and firefighter so i apologize if i am not presenting information adequately for those more inclined and appreciate all the assistance i have received so far.