TrafficCam

TrafficCam

Gear to record video of the pedestrian crossing and the speed of Eastbound traffic in front of Earlham on National Road West.

Research

• Test-drive current Axis camera "in-situ" on the wind geny's tripod. Use the PMP1 for the interface with the directional WiFi antenna. Location is likely to be the shrubbery near the East side of the entrance.
• Research all-in-one systems, see Alan's email.
• Research discrete speed sensors, pay close attention to the interface and data stream.
• Delta Speed Sensor DRS1000 + Appropriate PMP
• DR500S + Appropriate PMP
• http://www.stalkerradar.com/stalker-speed-sensor/
• http://www.stalkerradar.com/stalker-speed-sensor/traffic-speed-sensor/Traffic%20Speed%20Sensor%20specification.pdf
• http://www.radargun.net/
• http://www.videojug.com/film/how-to-hack-a-toy-radar-gun
• http://www.make-digital.com/make/vol10/?pg=151
• mpeg4 vs mjpeg

Shopping

• directional wifi antenna / Newegg url
  • comes with N-Type, RP-SMA and RP-TNC connectors
  • We will definitely need 2 or 3 of these MC to RP-SMA Adaptors/Cables (example)
  • Also, we will need at least 10ft RP-SMA extension cable (male to female)
• AC to DC power supply (I think one of these will do)
  • SP-100-12 12V, 0~8.5A
  • SP-150-12 12V, 0~12.5A
  • SP-150-13.5 13.5V, 0~11.2A
  • SP-200-15 15V, 0~13.4A
  • SP-150-15 15V, 0~10A
• DR500S Speed Radar
• TS-7260
• Linksys WRT54GL
• Shrubbery
• 30ft RP-SMA extension cable or Hawking Cable
• 20 ft conduit (available locally)

Current wifi card

• orinoco gold classic

Current battery and charge controller

• EP28-12 battery spec sheet
• Phocos CML10-2 10A,12/24V charge controller spec sheet

Possible technologies

• Technologic Systems single-board computer
• WiFi interface with directional antenna
• DRS1000 Delta speed sensor
• Axis weatherproof camera - Consider the AXIS 211
• POE injector - homebrew with e.g. Linksys vs one with native 12VDC input capability
• Weatherproof case - Consider the AXIS ACH13HB, the datasheet is available at the same URL as the AXIS 211 camera (above) or the AXIS 290B
• Mounting pole
• Step ladder
• Rope
• Power Source
• Large IDE HDD (750GB / 1TB)

Tasks

• upgrade Stewie's HDD
• stop webcam cron jobs
• unmount weather cam from roof
• prepare green pelican case
• prepare pmp1
• prepare wifi antenna
• mount cam in enclosure on Dennis roof
• update cacti hdd monitoring
• configure stewie BIOS
• disconnect cam in closet
• rename new HDD on stewie
• ask for the pmp1's EC WiFi IP to be available from off-campus
• log power up for pmp and cam using cron
• control wifi up/down on boot
• camouflage / paint bright colored gear
• port forwarding using router
• change camera power cable
• capture an MPG-4 / MJPEG @ 15 FPS and stream to stewie via pmp1 port 80 / 554
• turn off one antenna on router
• install speed sensor
• redo camera interface to be customized for this project
• make a custom 20 ft serial cable
• measure power consumption of complete unit
• deploy functional traffic cam unit

Image volume calculation

• 60 seconds/minute x 60 minutes/hour x 24 hours/day x 7 days/week x 4.5 weeks/month x 12 months/year = 32,659,200 seconds/year
• 1 frame/second x 20 KB/frame x 32,659,200 seconds/year = 653,184,000 KB/year or 637,875 MB/year or 623 GB/year

Software architecture:

• Cache 2 minutes locally
• Use infobomb stack to transfer and append to current day's movie
• 4a-3:59a movies, sync with infobomb and roll-over, simple trac or fancydir listing by year-month

Questions for Doug

• Interface - 1 second frames, manual video review, automated video review, speed/video correlation,
• Overall duration, 1 year?
• Better density

Documentation

Written By: Maduna (madunnh)

Main Hardware

• Pelican Case

Model: 1510 Pelican Case

The case houses most of the hardware of the unit. It contains the battery, power supply, charge controller, router and the single board computer. The components of the case were carefully attached using materials such as velrco, wire-ties and bolts and nuts. The case was initially used for another project (Keck Water Monitoring Project), so some of the components i.e. the battery and charge controller were already installed. The posision of the charge controller was changed to a 'vertical mount' in order to make room for a secondary battery (if required) and to bring it closer to the power supply unit.

• Battery

Model: EP2812 B.B. Battery

The battery is a 12V, 12Ah Lead-Acid rechargeable battery. It was chosen for its dimensions, capacity, operation temperature range and independent operational orientation (charges and discharges in any position). Even though the battery was not specially chosen for this project, its capacity was calculated to be sufficient for this project's hardware.

• Charge Controller

Model: Phocos CML10-2

This is a 10A, 12/24V charge controller specially chosen for its compatibility with the battery and ability to charge the battery using a solar panel. Due to the high power demand of the components and the significance this project, solar power was tested to be unreliable, especially at the deployment site where there are a lot of tall trees. Instead of a solar panel, a power supply was used.

• Power Supply

Model: Mean Well SP-150-15

The power supply takes normal 115V AC and outputs 15V, 0~10A which is in the range of the output of a solar power panel compatible with our charge controller and battery. The deployment site is far from any buildings with a continuous supply of AC power, but luckily, there is a streetlight near by. Because the street lights use regulated power and only turn on at nighttime, the power supply charges the battery at night and then the battery powers the unit during daytime.

• Router

Model: Linksys WRT54G The router acts as a wireless adapter for the unit. It's firmware was upgraded to DD-WRT and it was configured to run in client mode.

• Single Board Computer
• Directional Antenna
• Video Camera
• Camera Case
• Doppler Radar

Software

• Host
• Client