hi,
Can AI deck use cameras to recognize objects or faces ? I feel that this chip cannot be purchased from China, I consider whether it can be replaced with canaan's K210. Both performance and price should be met.
Search found 186 matches
- Fri May 22, 2020 7:41 am
- Forum: Developer Discussions
- Topic: AI deck
- Replies: 1
- Views: 1036
- Mon May 18, 2020 12:15 pm
- Forum: Loco Positioning System
- Topic: uwb and 2.4GHZ radio maybe interference ?
- Replies: 1
- Views: 1483
uwb and 2.4GHZ radio maybe interference ?
hi,
when uwb and 2.4GHZ were working simultaneously, the packet loss rate of 2.4GZH will be higher.
how to solve it ? 2.4GHZ switch to other channel ?
when uwb and 2.4GHZ were working simultaneously, the packet loss rate of 2.4GZH will be higher.
how to solve it ? 2.4GHZ switch to other channel ?
- Fri Apr 03, 2020 3:06 am
- Forum: Loco Positioning System
- Topic: tcxo crystal should be improve the accuracy
- Replies: 7
- Views: 3954
Re: tcxo crystal should be improve the accuracy
Here's one of the better explanations I found of the situation, but like I wrote this isn't exactly my domain so I can't judge if whatever is written is valid or not. There's more answers in the same thread as well. thanks for your share,Even if there are defects sometimes, we still have to use the...
- Fri Apr 03, 2020 3:02 am
- Forum: Loco Positioning System
- Topic: tcxo crystal should be improve the accuracy
- Replies: 7
- Views: 3954
Re: tcxo crystal should be improve the accuracy
You can log the measured clock drift (clock correction) with the tdoaEngine.cc log if you want to check it out. about lps-node code , the uwb_tdoa3_anchor.c file , we measure the clockCorrection as following: double clockCorrection = calculateClockCorrection(anchorCtx, remoteTxSeqNr, remoteTx, rxTi...
- Fri Mar 27, 2020 12:20 pm
- Forum: Loco Positioning System
- Topic: tcxo crystal should be improve the accuracy
- Replies: 7
- Views: 3954
Re: tcxo crystal should be improve the accuracy
hi, and tcxo is indeed very stable. For example, the distance measurement has a stable jitter, which is generally less than 10 cm. In addition, there will also be a stable absolute deviation. We only need to do a linear correction. If an ordinary crystal is used, a non-linear correction is required....
- Fri Mar 27, 2020 12:13 pm
- Forum: Loco Positioning System
- Topic: tcxo crystal should be improve the accuracy
- Replies: 7
- Views: 3954
Re: tcxo crystal should be improve the accuracy
hi, marcus: Yeah, from the tdoa sync , we find that when power on the chip, the tcxo warm up about 1min . tdoa2 don't any question. my doubt is tdoa 3 send a packet about random 30ms, the packet record the tx timestamp, and other anhcor receive and record the rx timestamp, badly, if the two packet t...
- Thu Mar 26, 2020 3:07 pm
- Forum: Loco Positioning System
- Topic: tcxo crystal should be improve the accuracy
- Replies: 7
- Views: 3954
tcxo crystal should be improve the accuracy
hi,
I noticed that dwm1000 uses a normal crystal, if I use a TCXO crystal, I think it can improve some accuracy
I noticed that dwm1000 uses a normal crystal, if I use a TCXO crystal, I think it can improve some accuracy
- Wed Nov 27, 2019 3:14 pm
- Forum: Loco Positioning System
- Topic: ch2 and ch3 Interfere
- Replies: 1
- Views: 1799
ch2 and ch3 Interfere
Interfere with each other about ch2 and ch3, but the two channel don't use the same frequence.
when sniffer set as ch2, tag set as ch3, sniffer still receive tag's data, why?
when sniffer set as ch2, tag set as ch3, sniffer still receive tag's data, why?
- Wed Nov 27, 2019 3:09 pm
- Forum: Loco Positioning System
- Topic: when exist metal or wall, about tdoa3
- Replies: 5
- Views: 3037
Re: when exist metal or wall, about tdoa3
hi,
Inter-anchors are LOS, but tag and anchors maybe exist occlusion,
Inter-anchors are LOS, but tag and anchors maybe exist occlusion,
- Sun Nov 24, 2019 4:16 pm
- Forum: Loco Positioning System
- Topic: when exist metal or wall, about tdoa3
- Replies: 5
- Views: 3037
when exist metal or wall, about tdoa3
hi,
If there is some metal or wall occlusion in the environment, the TDOA3 algorithm be used, and the positioning is very inaccurate?
If there is some metal or wall occlusion in the environment, the TDOA3 algorithm be used, and the positioning is very inaccurate?