| ??? 12/23/10 18:46 Read: times |
#180260 - piezo sensing Responding to: ???'s previous message |
Thanks for the quick initial responses.
I am only looking to know what the maximum amplitude was. Per said: "if you can just use a standard ADC". That's the kind of thing I'm looking for: is there a typical "standard ADC"? Are there ADC chips with multiple analog inputs (like 4 or 8) that I could then scan using address lines? This is for a one-off project and the precision doesn't need to be very high. I'm just trying to use low cost standard chips if I can. If I can get about 8 levels of sensitivity out of it I would be quite happy with that. As for sampling and hold, hopefully it could be done with as little as a RC circuit if I can scan the analog inputs fast enough. Experimenting with a scope will tell me that. Thanks again. |
| Topic | Author | Date |
| measuring piezo voltage | 01/01/70 00:00 | |
| Oscilloscope | 01/01/70 00:00 | |
| you ned to read up on ... | 01/01/70 00:00 | |
| piezo sensing | 01/01/70 00:00 | |
| Careful with resolution or strength will feel "random" | 01/01/70 00:00 | |
| Really need ADC? | 01/01/70 00:00 | |
| source impedance | 01/01/70 00:00 | |
| Once digital? | 01/01/70 00:00 | |
| Piezo signals high dynamic range | 01/01/70 00:00 | |
| not 8051 specific? | 01/01/70 00:00 | |
| Some Reference Materials | 01/01/70 00:00 | |
| reference materials | 01/01/70 00:00 | |
| Two comments | 01/01/70 00:00 | |
| one comment on a comment | 01/01/70 00:00 | |
| made good progress | 01/01/70 00:00 | |
| not necessarily a good idea | 01/01/70 00:00 | |
zener | 01/01/70 00:00 | |
| one important thing | 01/01/70 00:00 |