| Popis: |
The proposed method aims in designing a system which is capable identifying the emergency situation in ambulance and automatically controls the traffic at the signal point. This feature helps in decreasing the death rate which occurs mostly due to traffic congestion in emergency situation. Traffic density sensor is used to increase the green time when the traffic is heavy. Zigbee is used for establishing wireless communication between system in ambulance and the system at signal point, few control buttons in ambulance are used for indicating emergency situation, and traffic signal indicators are to be controlled depending on emergency situation in the ambulance. In Zigbee transmitter, which is their in the ambulance and placed four buttons i.e. east, west, north and south. The driver presses either of these button depending on the ambulance direction. So, this transmitter sends signal to that Zigbee receiver placed at the traffic junction and the PIC microcontroller takes the action of controlling the LEDs and IR obstacle sensor identify the heavy traffic. |
