| ??? 11/10/11 22:43 Read: times |
#184621 - Missed the point! Responding to: ???'s previous message |
Per Westermark said:
I wonder if it would be best to send out bursts and measure how the echo time changes as the distance changes, or to pick up frequency of the bounce and check for change in frequency. The point of looking for a module is not to have to wonder about such things - just let the module do it! A problem here is that the vehicle hasn't a flat surface Interesting research paper on the subject: http://ecommons.library.cornell.edu/retrieve/...01+007.pdf A laser system has the advantage that it has a small dot if reasonably collimated. OK - so do you know of any laser-based modules? |
| Topic | Author | Date |
| Ultrasonic speed sensor module? | 01/01/70 00:00 | |
| Doppler | 01/01/70 00:00 | |
| Missed the point! | 01/01/70 00:00 | |
| uwave ? | 01/01/70 00:00 | |
| microwave | 01/01/70 00:00 | |
| RE: "I thought I found someone in Basingstoke" | 01/01/70 00:00 | |
A Link | 01/01/70 00:00 |