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# Presentation Tw

## on Dec 13, 2009

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## Presentation TwPresentation Transcript

• Linking system between two vehicles using GPS s1140176 Tatsuya Hasegawa
• Contents
• Background
• Purpose
• Problem
• Solution
• Model
• Problem
• How to measure distance
• Route check
• Future works
• Background
• Communication is possible anytime in real time.
• The communication between drivers are necessary in the ITS in the future.
• The accident by operating the car navigation system and the cellular phone, happens frequently.
• Purpose
• Develop the group traveling support system
• The driving support system matched to user's situation without using communication tool such as cell phone.
• Problem
• How to measure distance between two vehicles.
• How to check route that the leading vehicle passed through.
• Solution
• Calculate total mileage of each vehicle.
• 　　　　　↓
• 　 Total mileage of the following subtract from total mileage of the leading.
• Calculate direction to current coordinate from last received coordinates
• 　　　　　↓
• 　 By calculating movement direction, the route is checked.
• Model -How to measure distance- Measuring the distance between two vehicle
• Model –route check- Check whether the following vehicle runs the same route with the leading vehicle This is wrong route!
• How to measure distance The coordinate information Angle 　⇒　 convert radiun A is radius of the earth. A = 6378137m ⊿ X is the displacement in longitude direction ⊿ Y is the displacement in latitude direction Measure the distance between two points
• How to measure distance Calculate the run mileage The difference of each mileage is calculated.
• Route check A lean of the leading vehicle to time t from time t-1 A lean of the following vehicle to time t’ from time t’-1 First quadrant or third quadrant Second quadrant or fourth quadrant