V2V tech
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V2V communication allows vehicles to communicate with each other to improve safety. It uses DSRC to allow vehicles to share information about their speed, location, and other data to warn of potential hazards. This enables features like collision avoidance systems and emergency vehicle warnings. Implementation of V2V is expected to prevent 76% of car accidents according to NHTSA. It provides 360 degree awareness without needing roadside infrastructure by forming a network between equipped vehicles.
V2V tech
- 2. Contents • Introduction • V2V Communications • V2V Applications • V2V Communications forSafety • Technologies
- 3. • Vehicle to Vehicle Communication Systems: • This systems are an emerging types of networks in which vehicles and roadside units are the communicating nodes: • To provide each other as information, such as safety warning and traffic information. • Generally vehicular networks are considered to contain two types of nodes: • -vehicle to vehicle (V2V) • -vehicle to Roadside (V2R) Introduction
- 4. What is V2V Communication • V2V(Vehicle to Vehicle ) is an automobile technology designed to allow automobiles to “talk” to each other. • Uses a region of 5.9GHz band using wireless protocol standard IEEE 802.11p. V2V is currently in active development by General Motors, using Cadillac vehicles. • With a 360 degree awareness of the position of other vehicles.
- 5. About V2V • The primary benefit of V2V is to protect vehicles from potential road hazards and improve safety. • Fast and Reliable and provides real time safety • Does not need any roadside Infrastructure. • Uses Dedicated Short Range Communications (DSRC), which in the US utilizes a 75-MHz bandwidth at a frequency of 5.9 GHz • It is designed to facilitate communication at distances of up to 1 km. • The data exchanged may include a vehicle’s position, speed, throttle position, steering angle, brake status, turn signal status, number of people in the vehicle, etc.
- 6. Applications • Safety related: collision avoidance, cooperative merging, etc • Incident report: dissemination of data regarding accidents on the network or breakdown/ blockage of a link, etc • Route Guidance: en-route guidance about the shortest path, route guidance for gasstations, etc • Miscellaneous: green light prediction, parking space availability, etc.
- 7. V2V Communication for Safety • By exchanging anonymous: over vehicle-based data regarding position, speed, and location • Enables a vehicles to: 1.Sense threats and hazard with a 360 degree awareness of the position of other vehicles. 2.Issue driver advisories or warnings 3.Take preventive actions to avoid and mitigate crashes.
- 8. Example :Hazard Warning • Vehicles that are in a trafficjam and turned on their hazard warning lights,communicate this information back to otherVehicles. • Information is much more accurate and reaches upcoming traffic.
- 9. Example : Accident Warning • If vehicles involved in an accident are equipped with short-range communication, they can send out a warning message to the following traffic e.g. to avoid mass collisions. • If the driver fails to take action, the V2V system could automatically apply the brakes to stop the car.
- 10. Example : Emergency Vehicle Warning • Approaching emergency vehicles send out a warning message to warn vehicles that are in its vicinity • Receiving vehicles can automatically mute the radio or the hands free-phone and give an audible or visual warning message to the driver
- 11. Example: Traffic Signal violation Warning • Vehicles can be warned about an imminent change of a traffic light and if they are in danger of running a red light • Traffic lights can send out their timing and phase to prevent red light violations and potential accidents
- 12. Example : AdaptiveCruiseControl • This system is effective when the adaptive cruise control fails to perform correctly due to the radar's line-of-sight scanning. • When the car approaches a sharp curve, the DSRC system warns the adaptive cruise control system of any slow moving vehicles just around the turn.
- 13. After Implementation: • According to the National Highway Traffic Safety Administration (NHTSA), 76% of car accidents could be prevented with the help of V2V communication technology. • Large number of cars on the road must be equipped.
- 14. Technologies • WSN(Wireless sensor networks) -consists of spatially distributed autonomous sensors to monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, humidity, motion or pollutants and to cooperatively pass their data through the network to a main location. • VANET(Vehicular Ad hoc Networking) –enables communication over multiple wireless hubs, but not necessarily including roadsideaccess points. • (GPS/ WiFi/ WiMax) -In-vehicle digital maps and positioning technologies as sensing systems to accurately identify the vehicle position and interpret the environment • DSRC (Dedicated short-range communication) -are one-way or two-way short-to medium-range wireless communication channels specifically designed for automotive use and a corresponding set of protocols.
- 15. DSRC (Dedicated Short Range Communication) • The new tech combines Wi-Fi and GPS to create a new form of communication known as DSRC. • The system works by making each vehicle a node on the network. • Bandwidth:75MHz (5.850 –5.925GHz) • Modulation : QPSK OFDM • Channels:7 channels • Data Rate:1-54Mbps • Max Range:1000m • Min. Separation:10m
- 16. • DSRC is a multi-channel wireless standard that based on the IEEE 802.11a PHY and the IEEE 802.11 MAC. • It is targeted to operate over a 75 MHz licensed spectrum in the 5.9 GHz band. DSRC (Dedicated Short Range Communication)
- 17. VANET (Vehicle Ad hoc Networking) • VANET is a technology • VANET integrates on multiple ad-hoc networking technologies such as WiFi IEEE 802.11p, WAVE IEEE 1609, WiMAX IEEE 802.16, Bluetooth etc.
- 18. VANET (Vehicle Ad hoc Networking) • The onboard sensors’ readings e displayed to the drivers via monitors to be aware of the vehicle condition or emergency alarms, and also can be broadcasted to the other adjacent vehicles.
- 19. Conclusion • Surely this technology could avoid accidents. • Provides good standard for vehicles. • Presented by Ms. Ayeesha S.M • Ms.Suganya.J