In order to have comparative analysis in the light of detecting the vehicle accurately, the parameters considered for
scenario 1 for the LDR Sensor are kept same. IRIS integrated with IR sensor is deployed at the base of parking slot
from morning 9:00 AM to 8:00 PM. The parking slot is empty, therefore there will be no interception in the IR signal,
and no echo signal will be generated. The voltage level will be 0 volts. This is the reference voltage level. When
vehicle arrives over the deployed sensor in the parking slot, IRs LOS will be intercepted, generating an echo signal.
The voltage level will change from 0.0 volts which is considered as reference voltage up to a level which depends on
the height of vehicle’s base and resulting an echo. Fig. 3 shows that voltage level remains 0 volts in the absence of the
vehicle. Whenever any vehicle arrives at the parking slot, a certain voltage level is observed, resulting in detection of the vehicle. The voltage level after detection of a particular vehicle remains same for the entire time interval i.e. 9:00
AM to 8:00 PM as highlighted in Fig. 3. Thus Infrared (IR) sensor can be considered as accurate for the detection of
vehicle.