09-05-2012, 01:56 PM
EMBEDDED BASED INTELLIGENT SYSTEM FOR AUTOMOBILE COLLISION PREVENTION
[attachment=21678]
INTRODUCTION
Our work is to design controller to automate and optimize the application of brake pressure to an automobile’s brakes at proper time. So first requirement implies that the two vehicles should never have any physical contact, while the second one implies that the brakes should be used only in the amount necessary, e.g., they should not undergo large excursions to make small adjustments.
IMPORTANT PARAMETER
The parameters that we took to avoid collision are
• Separation between the two vehicles
• Velocity with which they approach each other
• Surface conditions
For calculating these three parameter, Laser range finders could provide the first two measurements, while wheel-slip sensors currently used for automobile Traction Control Systems or Anti-lock Breaking systems (ABS) could estimate could estimate the third measurement
DISTANCE DETECTION
For finding the distance between the vehicles, we use the principle of laser range finder, which use the laser light to detect the distance of the object from the place it is mounted.
A laser rangefinder is a device which uses a laser beam to determine the distance to an object. The most common form of laser rangefinder operates on the time of flight principle by sending a laser pulse in a narrow beam towards the object and measuring the time taken by the pulse to be reflected off the target and returned to the sender.
INTELLIGENT CONTROL MODULE
Assumptions:
• The tracking vehicle’s brakes have EBD-ABS (Electronic brake force distribution system- Antilock Braking System) or similar mechanism, ensuring that the wheels will not lock during breaking situations. This assumption limits the simulation to simulation to consider only static friction.
[attachment=21678]
INTRODUCTION
Our work is to design controller to automate and optimize the application of brake pressure to an automobile’s brakes at proper time. So first requirement implies that the two vehicles should never have any physical contact, while the second one implies that the brakes should be used only in the amount necessary, e.g., they should not undergo large excursions to make small adjustments.
IMPORTANT PARAMETER
The parameters that we took to avoid collision are
• Separation between the two vehicles
• Velocity with which they approach each other
• Surface conditions
For calculating these three parameter, Laser range finders could provide the first two measurements, while wheel-slip sensors currently used for automobile Traction Control Systems or Anti-lock Breaking systems (ABS) could estimate could estimate the third measurement
DISTANCE DETECTION
For finding the distance between the vehicles, we use the principle of laser range finder, which use the laser light to detect the distance of the object from the place it is mounted.
A laser rangefinder is a device which uses a laser beam to determine the distance to an object. The most common form of laser rangefinder operates on the time of flight principle by sending a laser pulse in a narrow beam towards the object and measuring the time taken by the pulse to be reflected off the target and returned to the sender.
INTELLIGENT CONTROL MODULE
Assumptions:
• The tracking vehicle’s brakes have EBD-ABS (Electronic brake force distribution system- Antilock Braking System) or similar mechanism, ensuring that the wheels will not lock during breaking situations. This assumption limits the simulation to simulation to consider only static friction.