Hi
I am using LDC1000 Inductance sensor to detect metal target in my prototype system.
The coil sensor diameter is 2cm, and my goal is to be able to detect metal target of at least 1cm away, but there are problems to achieve this result.
1. No Rp_max and Rp_min exist to be able to get proximity data value changing from 0 without target and 32768 with closest target. I set Rp_max=0x14, and Rp_min=0x35, and get proximity range from 15593 to 32768. But even when target closes to the coil less than 5 mm, the proximity data changes too little to observe. When there is no target, proximity data is not stable, and the vibration noise range is even bigger than when there is target of 5mm away.
2. In the same test condition, the Fcount value which is read from register 0x25, 0x24, 0x23 is very stable. When there is a metal target close to coil around 1.2cm, Fcount start to change to smaller value. I just wander if I can use Fcount to detect target existence instead of using proximity data.
Could anyone tell me if there are pitfalls to use Fcount to detect metal target.
Thanks!
Wayne
