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App Notes for using the PIR Sensor to control a Video Switch — Parallax Forums

App Notes for using the PIR Sensor to control a Video Switch

ACTechWorldACTechWorld Posts: 2
edited 2007-06-20 17:31 in Robotics
I've posted application notes for interfacing the 555-28027 PIR Sensor Module to the RSVSwitch RS-232 controlled video switch to create a motion controlled video monitoring system that provides fast response time to motion events.

The switch can be used to control video switching, or can also be used as a serial interface for monitoring 3 motion detectors (with or without cameras).

RSVAN0022 - Controlling video switching using the built in feature
RSVAN0023 - Monitoring 3 motion detectors from Perl

RSVSwitch Manual

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- Alan
Tech World
http://www.tech-world.com

Comments

  • sam_sam_samsam_sam_sam Posts: 2,286
    edited 2007-06-14 17:42
    Alan

    ·Where do i buy one of these units

    ·RSVSwitch RS-232 controlled

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    Sam
  • Paul BakerPaul Baker Posts: 6,351
    edited 2007-06-14 17:45
    http://www.twstore.com/rsvswitch.html

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    Paul Baker
    Propeller Applications Engineer

    Parallax, Inc.
  • sam_sam_samsam_sam_sam Posts: 2,286
    edited 2007-06-14 19:24
    Alan

    How would you use the TX Data Out and RX Data In with a Basic Stamp to control it

    How would you Write the Commands to·controls

    with a Basic Stamp

    The switch can be used to control video switching, or can also be used as a serial interface for monitoring 3 motion detectors (with or without cameras).

    Command Summary

    http://www.tech-world.com/techworld/RSVSwitch/rsvswmanual.php····

    Do you have a Demo writen for this Unit



    ·Paul Baker

    Thank You for Reply And Web Link





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    Sam
  • ACTechWorldACTechWorld Posts: 2
    edited 2007-06-20 17:31
    I don't have a source code example (yet) for the Basic Stamp. The interface on the RSVSwitch is RS232 level (MAX232).
    Looks like some of the stamps are directly compatible, but I don't have any to try.
    Otherwise, you'd go thru a MAX232 or similar chip to give RS232 levels.

    But the RSVSwitch also has TTL level inputs for sensor switching. These can be connected directly to a microcontroller output port pin.
    In this mode, the switch would show camera 1 normally and could be switched to camera 2,3,4 by raising an input line high.
    See www.tech-world.com/techworld/RSVSwitch/rsvan0012.php for details.

    When controlling the switch with TTL signals, you have direct control of the video switching function, but you will not have control of scan mode settings and camera configurations. This is usually a one time configuration, that you will need to do using a computer serial port. Enabling sensor mode can be done using the menu and sending ("MJZW") (manual mode, sensors on, 4 cameras, save settings)

    If you use RS-232 to control the switch, you can configure it using the RS-232 line and also receive sensor events from external sensors as explained in the previously mentioned app notes. I've been playing with these all week and it's much quicker than using X10 motion sensors because the X10 sensor-to-rf and RF-to-powerline transmission delays are eliminated.

    There's also been a price drop on the video switch line this week at http://www.twstore.com
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