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### Transcript

• 1. Linking system between two vehicles using GPS s1140176 Tatsuya Hasegawa
• 2. Contents <ul><li>Background </li></ul><ul><li>Purpose </li></ul><ul><li>Problem </li></ul><ul><li>Solution </li></ul><ul><li>Model </li></ul><ul><li>Problem </li></ul><ul><li>How to measure distance </li></ul><ul><li>Route check </li></ul><ul><li>Future works </li></ul>
• 3. Background <ul><li>Communication is possible anytime in real time. </li></ul><ul><li>The communication between drivers are necessary in the ITS in the future. </li></ul><ul><li>The accident by operating the car navigation system and the cellular phone, happens frequently. </li></ul>
• 4. Purpose <ul><li>Develop the group traveling support system </li></ul><ul><li>The driving support system matched to user's situation without using communication tool such as cell phone. </li></ul>
• 5. Problem <ul><li>How to measure distance between two vehicles. </li></ul><ul><li>How to check route that the leading vehicle passed through. </li></ul>
• 6. Solution <ul><li>Calculate total mileage of each vehicle. </li></ul><ul><li>　　　　　↓ </li></ul><ul><li>　 Total mileage of the following subtract from total mileage of the leading. </li></ul><ul><li>Calculate direction to current coordinate from last received coordinates </li></ul><ul><li>　　　　　↓ </li></ul><ul><li>　 By calculating movement direction, the route is checked. </li></ul>
• 7. Model -How to measure distance- Measuring the distance between two vehicle
• 8. Model –route check- Check whether the following vehicle runs the same route with the leading vehicle This is wrong route!
• 9. 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
• 10. How to measure distance Calculate the run mileage The difference of each mileage is calculated.
• 11. 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