Following Problem was solved with the help of NAV2001132 History Colorado Center:

• There are two “Time Machines” that are large 4 wheeled (Casters) carts that the guests push around on a large map of Colorado. The map area is about 14 meters by 19 meters.
• There will be about 12 locations on the map that when the Machine is pushed over them, the machine will activate and the guests can watch video programs about historical periods for that location. For example, if they push the machine over Denver, there might be 3 choices of videos.
• To restrict the movement of the machines when they are pushed off of the map area. We are developing a braking wheel system that can be activated if the machine is out of bounds.

Nav200-1132 helped to calculate

• The X-Y location information that we can program the AV system to respond when the machine reaches one of the 12 locations on the map
• use X-Y information to determine If the machine is being pushed off the map.
• Collison avoidance between the two machines was accomplished by having the X-Y information from each machine sent via RF to the other machine, the software helped create a virtual “Ring” around the machine causing it to stop if it approaches too close to the other.

SICK outdoor scanning laser range finder LMS151 is a long distance measurement type series (at 75% reflectance) with 50m maximum measuring length. LMS151 takes measurements through glass and dust.  It acheives this by double pulse evaluation. It has the ability to measure distances of up to 18m in a matte black object with a wide angular range, you can output data in real-time Ethernet. It can simultaneously monitor up to 10 maximum field of any shape. This specification can be used up to -30 ℃ outdoor waterproof dustproof IP67 and built-in heater.

LMS151 was used to autonomously steer Obelix robot through the city of Freiburg.
Robots in Search offers the lowest prices for laser scanners and currently we have 5 SICK LMS151 in stock.  Please let us know if you have an immidiate requirement and we can ship right away.

Long range SICK LD-LMRS or IBEO laser scanners with multi echo can help in context perception in front of the TRAM or train.  The laser scanner can detect the true nature of the RISK by combining the the contextual data given by a GPS with the object level information given by the laserscanner and generating or forcing the required action for example applying brakes or firing an alarm.

The object classification by the laserscanner can be done using Kalman filter by detecting the current position of the object and predicting where the object can be.  The profiling of the object is performed by the object outlines.  The object classification and context analysis helps in calculating the risk assessment and the system can be designed to take action accordingly.

 

The SICK LD-MRS laserscanner can scan an area of around 100° in front of the train or tram and also gives 3.2° vertical field of view through its multi-layer (up to four layers or 8 layers) technology. The laserscanner can detect objects up to 200m.  It has a distance resolution of 4cm and horizontal angular resolution of 0.125°.

- See more at: http://www.robotsinsearch.com/products/blog/collision-avoidance-trains-and-trams-help-long-range-sick-ld-mrs-laser-scanners