Jump to content

shropna

Members
  • Content Count

    311
  • Joined

  • Last visited

Posts posted by shropna


  1. Hello,

     

    I looking for VMS, which can comply this requirements:

    On site we has Alarm panel, which can send customized message via serial port (up to 16 ASCII symbols). This messages should be used as alarm source for VMS.

    Another possibility is to generate HTTP commands on alarms, and, the worst way, relay outputs.

    I need integrate up to 40 different alarm messages to create alarms on video system (dome presets, alarm recordings).

    Also, user should has possibility to receive, fast review and playback alarms events from alarms list via Windows PC and iPad, iPhone. Easy navigation is most important thing, especially, events reports on iPad, iPhone and fast search and playback selected events video.

    On site are installed five Samsung SNP-6230RH PTZ cameras. From this cameras alarm outputs should be possibility to activate alarm sounders on alarm also.

    Can you recommend me the VMS, to comply this requirements?


  2. Hello,

     

    I need suggestions about autotracking dome. Autotracking should work, like in this scenario:

    https://dl.dropboxusercontent.com/u/15064520/alarm2.flv

    When no perimeter system alarm, dome just should do field scan.

    After alarm comes from perimeter system (VMS send preset command to dome), dome should immediately start autotracking.

    There no one perimeter zone for dome, one dome should handle about 6 -8 different perimeter zones.

    I'm tried Samsung SNP-6320RHP dome, but, it starts autotracking after about 3-4 sac, and target disappears from dome field of view.

    Set too wide field of view doesn’t helps, objects become too small for autotracking.

    Also Dahua dome was tried (with autotracing activation after alarm input closing), but, in this dome, autotracking sometimes work, sometimes no, with no reason, why...

    Also, dome should have integrated IR (minimum 150 meters), and 1080 resolution.

    Does anybody has good experience with this setup?


  3. Actually, motion detection metadata is more complicated, then just alarms, generated on camera.

    Real inteligent motion detection metadata contains all motion information, generated on camera.

    This metadata is important not just for live alarms, but for post event search.

    If you can record all motion information metada, you can create very fast pos event search algorythms to find an event in recordings. And this is not just motion in specified region of interest search. You can create any intelegent filter (loitering, wrong way, missed object, etc.) , and search will be very fast, because you will search only metadata informotion, but not do recorded video analysis again.

    So, inteligent motion detection metada is not just alarm information. But, this metadata analysis is not supported on most VMS. Just "Live" alarms....


  4. Hi Guys,

     

    We have a RIVA RC110, and we can get metadata out of this and can get it to email or ftp us on VCA alert, anyone know the best way to use the metadata?

     

    Regards,

     

    Daniel.

    RIVA metadata supports various VMS manufacturers. I'm use Digifort VMS together with RIVA cameras. This software accepts alarms via RIVA cameras metadata. Also, supports counting functions, generate graphical reports, etc.


  5. As with RG6 , twisted pair is not the best to use, It can be extremely convinient to use & give good results but again it is not designed for this purpose. Its characteristic impedance is 100^ (120^) and requires impedance matching devices to operate (baluns) . The use of each balun will result in an insertion loss of up to 1.5db. This may offset any advantage over long runs.

    Some cameras has twisted pair output in camera. Its camera "design problem", not a cable

    Yep. If you want extend distance from analog camera, you will use twisted pair or fiber optic, but not coax Say also, that fiber is designed for day light transmission from Austrlia to night Europe, but not for CCTV

     

     

    ???????

    I mean, glass is designed for light transmission.

    But fiber optic use cctv, cable television, computer networks, etc.etc.

    So, say, that RG59 is designet for cctv, RG6 for catv, and cat5 for networks - is not correct.

    First computer networks also use coax cable, but now twisted pair


  6. As with RG6 , twisted pair is not the best to use, It can be extremely convinient to use & give good results but again it is not designed for this purpose. Its characteristic impedance is 100^ (120^) and requires impedance matching devices to operate (baluns) . The use of each balun will result in an insertion loss of up to 1.5db. This may offset any advantage over long runs.

    Some cameras has twisted pair output in camera. Its camera "design problem", not a cable

    Yep. If you want extend distance from analog camera, you will use twisted pair or fiber optic, but not coax Say also, that fiber is designed for day light transmission from Austrlia to night Europe, but not for CCTV


  7. Change cables to twisted pair, and use baluns Symetric line has more higher interference immunity, than coaxial cable.

    Immunity to interference, if you use coax, will have cable with lowest shield DC impendance (less than 1Ohm/100 meters).

    Mostly, RG6 cables are designed for high frequences, and has high DC impendance, and should not be used for analog CCTV cameras.

    Another problem can be , when cameras and DVR are grounded/powered from different locations. This also can cause high interference problems.


  8. You could use any Mobotix Camera and then add a Cam IO or MX-232-IO-Box which will give you 2 inputs and 2 outputs for relay/ alarm alerting. You can use either the custom defined video Motion detection or PIR sensors to trigger the alerts to the alarm panel, and have the camera auto email you a clip or frame capture.

     

    We have setup a few auto dealers and they used 360 cameras for the lots on the light poles and fixed cameras at the entrance to capture detailed identifying information.

    But, Mobotix has "simple" motion detection, without objects clasification, etc. So, lots of false alarms will be generated, if camera is outdoor.

×