1. ALTEC Automated Gang Lock Final Presentation Presented By Randy Turner Michael Thompson Justin Rutledge Ben Mize Drew Mardis Richard Moyer

2. The Automated Gang Lock  The system uses a heavy duty 45 pound-force solenoid.

3. The system fits in the narrowest boxes  The mechanism fits in a single box, protecting it from impact and corrosion.

4. The module can be welded, bolted, or riveted in place  Can use mounting brackets, or can be mounted directlyto the box by the housing.

6. A car-door style latch is employed to lock the bar in place  These latches are mass produced and can be bought for 5 dollars in large quantities.

7. A rack and pinion design was explored and scrapped.  An appropriate motor cost as much as the solenoid in the final design  The rack and pinion design also increased complexity and part count.

8. Manual override must be locked out  An access panel can lock out the mechanism directly  Alternatively, a release mechanism can be keyed to the outside.

9. The bar moves forward with a solenoid, and reverses with a spring

10. Spring force calculations ItemCoefficient of Friction WeightFriction ForceDeflection @ 3.06 lbs. Spring Tension Initial TensionTension @ 1’’ Deflection Greased Bar0.25 1 12.25 2 3.06 lbs Spring0.103’’2.54 lbs.7.58 lbs. Resistive Force On Solenoid 5.6 lbs.10.64 lbs. Force From Solenoid 16.6 lbs.45 lbs.

11. Cost Estimation  Articles shown in gray are conservative estimates

12. The wireless controller is simple to integrate into the system  No wiring takes place inside the box after assembly  Wires can be run along with the lights  The receiver is specifically designed to work on 12VDC automobile power.

13. Wireless modules cannot work inside closed metal boxes  Wireless signals cannot transmit through a conductive metal cage (Faraday Cage Effect). The receiver can be placed outside the box An antenna could be run to the outside of the box The box itself can be made to act as an antenna.

14. Wiring  Wiring the system is relatively straight-forward.  Each solenoid requires a relay to protect the wireless unit and to function reliably.

15. Conclusions  Cost Estimate: $45 per box in parts $35 estimate labor costs per box Final Estimated Cost for 3 box truck: $320  Design uses mostly inexpensive manufactured parts  Can be installed in boxes large and small

16. The automated system