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SMS (Speed Monitoring System)

SMS (Speed Monitoring System)

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SMS (Speed Monitoring System)

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  1. SMS (Speed Monitoring System)

  2. Societal Problem • People tend not to pay attention to the speed they are driving, particularly when they have to slow down for school zones • Speeding in school zones causes too many pedestrian injuries and/or fatalities

  3. A Serious Problem? Largest number: collisions involving kids (ages 5 to 19) between 3 and 4 pm (State of Washington, 1990 – 1995)

  4. A Serious Problem? • Motor vehicle crashes - #1 cause of death for children ages 5 to 18 in the U.S. • 1996 – 758 children (ages 5 to 17) were injured and 11 killed in school zones in Washington • 1998 – 66% of the total pedestrian fatalities in the U.S. were under the age of 20

  5. Proposed Solution Provide an inexpensive, portable system that will increase driver awareness of speeding in school zones and other critical areas

  6. Major Objectives • Reduce the number of accidents in school zones • Increase compliance to speed limit without ticketing • Increase awareness of speeding in areas with many pedestrians • Provide an inexpensive but reliable means of safety

  7. How SMS Works Cars pass over tubes on the road – the tubes send signals back to a processing box The box outputs to a road sign, similar to this one – the sign displays speed

  8. SMS Design Advantages • Less maintenance than radar • Works in the rain • No calibration required • Speed readings are more reliable than radar • Cancer-free system

  9. Major Functional Components • Sensor cables • 2 road tubes for each • lane of traffic • Processing box • 1 serial port (for sign interface) • 4 air-switches (for tube interface) • 1 easily accessible user interface • Keypad • LCD display • Road display sign • Software • 2 drivers (for 2 interfaces) • Processing module • Documentation • (reference manual)

  10. How Processing Box Works • Captures the air pulses from the tubes • Translates those pulses into digital signals • Calculates the car’s speed • Calculates the display time for that speed • Sends the output to the display sign

  11. Processing Box Specs Operating Temperature: -30C to +70C Charging: Sealed rechargeable gel cell, lasts 10 hours Communications: Serial port, 2400-115K baud Clock: Real time clock w/ lithium battery backup Internal Memory: 22K RAM (standard)

  12. Processing Box Case 4 x 16 alpha-numeric LCD 12-button keypad Lockable sheet metal housing Material: Aluminum, painted – durable sheet metal housing Dimensions: 7.8"L x 8.2"W x 5.2"H Weight: 9.5 lbs, with battery

  13. Display Sign • ATV Speed Display Sign, • from Decatur Electronics: • 2 10-inch-tall mechanical • digits • Flip-up “YOUR SPEED” • sign

  14. Other (Possible) Display Signs Larger signs may be needed for some areas: Any sign with a serial port interface can be used – only a new device driver would be required This is an example of a trailer hitch that we plan on using

  15. Road Tubes & Switches • Placed on the road • Sends signal to air-switch • Captures tube signal • Generates an electric pulse

  16. Typical SMS Layout 2 systems are required for 2-way traffic Each box supports a maximum of 2 lanes 2 road tubes required for each lane *Highest speed is displayed

  17. Setting Up SMS 5. 1. 6. 2. 3. 4.

  18. Is SMS Worth It? By increasing driver awareness, SMS will help decrease the number of serious accidents

  19. - Why Bother? - Safer children in school zones After an accident, Cox High School is installing an expensive system of flashing lights in its zone ($86,000)

  20. Required Resources • Computer Engineer • $29,000 • Programmer • $18,000 • Tester • $3,200 • Technical Writer • $7,920 • Marketing • $20,000 • Computers • $1,200 x 3 • Set of road tubes (dependent • upon number of lanes) • $50 • Processing box (including • CPU / board) • $525 • Display sign • $1,000 - $2,500

  21. Estimated Salaries

  22. Estimated Hours

  23. Average Total Cost

  24. -Projected Milestones-Hand Out • Hire Staff • Software Development • Test, Test, more Tests • Finish Documentation and ship

  25. Project Risks • Road tube specification and/or sign specification might be changed • For several lanes and lots of cars, our single display sign might not be as effective as we would like • Stopping traffic to set up system might be troublesome

  26. Possible Funding Agencies • IDEA (Innovations Deserving Exploratory Analysis) Programs • Managed by the Transportation Research Board • Provide start-up funding for promising but unproven surface transportation systems • Allstate Foundation • AAA Foundation for Traffic Safety

  27. References Web Sites: www.metrocount.com www.askca.com www.nhtsa.dot.gov www.comfutureil.com www.jamartech.com Interviews: Jim Ball, from MetroCount Osborne Jones, from MetroCount City of VA Beach Santa Fe Systems Dennis Ray