mobile robot is Pictures hazardous areas

hi..
I need help in providing a prototype robot do object detection and avoidance by using sensor(IR sensor or Ultrasonic sensor or lazer sensor)
but i see the (IR sensor or ultrasonic sensor) is better.In addition to DC motors and stepper motors.
the robot can move left,right, backward and foreword, and Contains encoder,wheels,camera.
In your opinion what is the Best species of this component if i was undergraduate
Thank you
I need help in providing a prototype robot do object detection and avoidance by using sensor(IR sensor or Ultrasonic sensor or lazer sensor)
but i see the (IR sensor or ultrasonic sensor) is better.In addition to DC motors and stepper motors.
the robot can move left,right, backward and foreword, and Contains encoder,wheels,camera.
In your opinion what is the Best species of this component if i was undergraduate
Thank you
