| ??? 10/22/10 09:31 Read: times |
#179271 - Some more information needed Responding to: ???'s previous message |
Hi Raghunathan,
100 Hz=100(readings per second) x 2(channels) x 2(Bytes) = 400 Bytes in 1 Sec. You want to log data for 1 hours (assume it) = 3600 Seconds. Total Memory required: 400 x 3600 = 1.4 Mega Bytes. I can't think of a data logger that can store this much data (and at that speed), using an 8051. I have not considered the Time stamp in the above calculations and that will take at least 8 bytes per record. Even if you want to re-transmit, the data logger has to process the ADC Value, run some calibration/linearization routines and store the data at 400 Bytes in 1 second, show the values on the display, and some other internal processes such as RTC, Watchdog, Keyboard scans, Alarm detection,etc. I think it is really difficult to get this kind of a product. |
| Topic | Author | Date |
| 2 Channel dataloggers with Serial Out | 01/01/70 00:00 | |
| Some more information needed | 01/01/70 00:00 | |
| SPI-connected flash | 01/01/70 00:00 | |
| The choice is made | 01/01/70 00:00 | |
| This looks like an inadequate description | 01/01/70 00:00 | |
| I want to buy not build one | 01/01/70 00:00 | |
| Well, your options will be much more limited, then | 01/01/70 00:00 | |
| Not a data *logger*, then? | 01/01/70 00:00 | |
OK will call it so... | 01/01/70 00:00 |