1. Main Functions of Ultrasonic Detector:

1). UD(ultrasonic detector) as one of the main part of ultrasonic sensor (parking detector) makes use of ultrasonic detecting the parking space to get message and transfer to ZCU or other equipments by RS485.
2). One parking space needs one UD which is installed in the middle of the car park space.

2 how car parking sensor system (parking lots) works:

Firstly, UD takes use of ultrasonic wave to detect the car space to see if it is occupied by vehicles and transfer relative command to LED Indicator which will turn from green to RED when occupied, or it will keep GREEN; meanwhile, the UD transmit its status message to ZCU immediately, and ZCU will collect and forward the information to CCU; CCU processes these data and sends the relevant command to ZCU and LED panel.

3.Cases:

1 July,2008        3850 cars       Singapore                  Changi Airport(OEM)
2 August,2008    200 cars       Japan                           Shin-Tokyo Building(TOKYO Marunouchi)
3 August,2008    70 cars         Beijing                         hongqiao pearl-market
4 Sep,2008        3160 cars     Philippines                    Mall of Asia (Manila SM)
5 Oct,2008         1500 cars       Singapore                      Harbourfront Centre(OEM)
6 Nov,2008           320 cars      Thailand                          Kasikorn Bank

7 Feb,2009      241 bays     Xuchang               PANGDONGLAI Plaza

8 April,2009     105 bays      Spain                OviedoBus station

9 May,2009      330 bays     Chengdu              CNPC South China branch

10May, 2009      109 bays    Beijing                Ocean family

11June,2009      650 bays      France                  Alizes

12July, 2009       890 bays      Kunming             THE TWIN TOWERS

13 July,2009       1700 bays     Philippines             SM megamall

14 Aug, 2009        1160 bays    Poland                 Krakow airport

15 Aug, 2009       170 bays      Slovakia               CASSOVAR

....

4.CE certification.