Adaptive Cruise Control.pptx

Adaptive cruise control

1. Seminar on Adaptive Cruise Control Presented by: Debaditya Datta Guided by: Prof. Subham Kundu

2. CONTENT

3. What is Adaptive Cruise Control?

4. Adaptive Cruise Control is an automotive feature that allows a vehicle’s cruise control system to adapt the vehicle speed to the traffic environment. A radar system attached to the front of the vehicle is used to detect whether slower moving vehicles are in the ACC vehicle’s path. Introduced in 1970’s in the USA. This system is now available in luxury cars like Mercedes S-class, Jaguar XJ, Volvo Trucks etc .

5. 1958 Chrysler Imperial

6. How does an Adaptive Cruise Control work?

7. Physical Overview

8. Normal cruise control Vs Adaptive cruise control Basic cruise control - such as has been around in cars for many decades allows you to set a speed for the car to drive - and that’s the speed it’ll drive come-what-may until you tell it to drive at a different speed or take over. Adaptive cruise control - which has become available in quite a few cars over the past half dozen years does essentially the same thing - except that (at a minimum) it can slow down to maintain a safe distance from the car in front. Typically, there is some kind of radar unit that measures the distance to the car ahead of you - and if it’s less than some certain distance, the cruise control slows down until that distance is achieved again. Once there is no car within that distance, it’ll speed up again until it reaches whatever speed you set for it.

9. COMPONENTS OF AN ACC SYSTEM:- ACC Module: The primary function of the ACC Module is to process the radar information and determine if a forward vehicle is present. Engine Control Module: The primary function of the Engine control module is to receive information from the ACC Module and Instrument cluster and control the vehicle’s speed based on the information. Brake Control Module: The primary function of the Brake Control Module is to check the speed of the vehicle via each wheel and deaccelerate the vehicle as and when requested by the ACC Module. Instrument Cluster: The primary function of the Instrument Cluster is to process the Cruise switches and send this information to the ACC and Engine Control Module.

10. CAN: The Controller Area Network is an automotive standard network that utilizes a 2-wire bus to transmit and receive data. Each node on the network has the capability to transmit 0 to 8 bytes of data in a single message frame Brake Switches: There are two brake switches, Brake Switch 1 (BS1) and Brake Switch 2 (BS2). When either of the brake switches is activated the ACC system is deactivated or it enters a standby state. Brake Lights: When the Brake Control Module applies the brake in request to an ACC request it will illuminate the brake lights to warn the vehicles behind the ACC vehicle that the car is deaccelerating.

11. Sensors are of four types: LIDAR (Light Detection and Ranging) RADAR (Radio Detection and Ranging) Vision Sensor Ultrasonic Sensor

12. Advantages:-

13. Disadvantages

14. CONCLUSION:- The accidents caused by automobiles are injuring lakhs of people every year . The safety measures starting from air bags and seat belts have now reached to ACC,SACC and CACC systems . The researchers of intelligent vehicles in USA and Ertico program of Europe are working on the technologies that may ultimately lead to Vehicles that are wrapped in a cocoon of sensors with a 360 view of their surroundings. It will probably take decades, but car accidents may eventually become as rare as plane accidents are now , even though the road laws have to be changed , up to an extent since the non human part of the vehicle controlling will become predominant.