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