Dave Swift Zach Smith. Virginia Polytechnic Institute Client: Union College Campus Safety Siren ...
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Transcript of Dave Swift Zach Smith. Virginia Polytechnic Institute Client: Union College Campus Safety Siren ...
Dave SwiftZach Smith
Virginia Polytechnic Institute Client: Union College Campus Safety
Siren Text Messaging Email Web TV (TVuC) Radio (WRUC)
Shared responsibility between TV and radio Pre-recorded messages from Campus Safety Single point to initiate override of both TV and
radio Emergency control station
User (defined by campus safety) given a local URL to activate
User name / password List of scenarios Click link to activate
Points of failure Power & internet required Manual Override should internet not be available
Television override Radio override
Secure
Control station to store recordings Must always have TV-out enabled Cannot have pop-ups on screen Cannot automatically restart
Launch Sequence Emergency Code generated by Web site Script programmed to launch an MPG containing a
slide and audio Hardware override
Force video out to modulator Force audio out to modulator AND to radio
Audio streamed out via direct connection with WRUC
Modulation within specification
Components Broadcast Medium
Must be ready to transmit 99% of time Must be crash resistant
Audio Switch Must not change the audio level dB Response time of < 2 seconds FCC regulations
Software Design Web Coding Switch Control
****MODULATION / AUTO TAKE OVER
Spectral analysis Signal levels Modulation readings
Time WarnerHeadend
(channel 21)
Ch.2 Modulato
rWRUC
A/V Switch- Includes 250gb HD, JPEG
Slideshow Capabilities
MiniDV (video 1)
Computer
(video 5)
VCR(video 2)
DVD 1 (video 3)
DVD 2 (video 4)
Monitor
coax composite audio
a/v
a/v
a/va/va/va/va/v
vga
IP Connectiontvuc.union.ed
u
NetworkPatchPanel
* note: a/v = composite mono audio and video connection
Time WarnerHeadend
(channel 21)
Ch.2 Modulato
rWRUC
A/V Switch- Includes 250gb HD, JPEG
Slideshow Capabilities
MiniDV (video 1)
Computer
(video 5)
VCR(video 2)
DVD 1 (video 3)
DVD 2 (video 4)
Monitor
coax composite audio
a/v
a/v
a/va/va/va/va/v
vga
IP Connectiontvuc.union.ed
u
NetworkPatchPanel
* note: a/v = composite mono audio and video connection
EMERGENCY SYSTEM
a/v
Emergency ComputerTCP Connection
OVERRIDE (serial)
To: Controller
Control Station
VIDEO IN(composite)
From: A/V Switch
AUDIO IN(composite)
From: A/V Switch
PANIC = CODE IN FROM WEB INTERFACEAV_IN1 = IN FROM PROGRAMMING SWITCHAV_IN2 = IN FROM EMERGENCY COMPUTERAV_OUT1 = OUT TO MODULATORAV_OUT2 = OUT TO WRUC (audio only)
WHILE (1){ PANIC == 000 //normal mode AV_OUT1 = AV_IN1 //pass signal from programming switch AV_OUT2 = NULL //force radio override OFF
IF (PANIC != 000) //if EMERGENCY override { WHILE (PANIC != 000) //hold until over { AV_OUT1 = AV_IN2 //force output to EMERGENCY COMPUTER AV_OUT2 = AV_IN2 //force radio override ON } }}
Legend
Audio Signal
Control Signal
Block Already Exists
Blocks to be Implemented
Audio From Downstairs Studio
Audio From Upstairs Studio Internet
Switch Controller
Control Signals
Audio Switch
Audio Signal
Audio Signal
Control Signals
Audio Switch
Audio Signal
Audio From Autoplaylist
Audio Switch
Audio From Union College EAS
To Transmission System
Audio Switch
Audio From EAS
Preliminary Design Reconfiguring TVuC office space Putting WRUC online for the year IEF Grant Block Diagram and Functional
Decomposition Design Paper Outline Working with Campus Safety
Temporary Solution to Campus Safety Research
Controller / Op-Amps Scripting
Design Paper Web site Radio Override Switch Controller
Programming
Scripting Building hardware controllers with near
100% uptime & limited points of failure Preventing computer from crashing Learn how each other’s setup functions