Before this the sensor that had been decide to use for this project is digital infrared sensor. As known this project need    had a prototype and this sensor been selected because the specification of this sensor is suitable with the prototypes that need to do. Below is the specification of this sensor:

Specification:

Diffuse reflective type
Light source: Infrared
Sensing range up to 30cm
Input voltage: 6-36VDC
NPN output
Dimension: 1.6cm (D) x 6.7cm (L)

Result from test:

5V can be use to power, maximum dectection distance is ~20cm
12V, maximum dectection distance is ~ 60cm
30V, maximum dectection distance is ~ 80cm
All above test is using Cytron's white box as obstacle, in our lab.