Parking Guidance System (Zcu)

Following are the specifications of Parking Guidance System (ZCU):
Type: Carport
Place of Origin: Fujian, China
Brand name: Keytop
Model Number: Keytop-h05
Principle: Ultrasonic
Work temperature: -20C---+80C
Frequency: 50-60Hz
Rate voltage: AC110-220V
Baud Rate: RS-232-NODE: 9600bp; RS-232-PC: 57600bps
COM1: To ZCU
Voltage: DC5V
Available distance: <=1000m

One ZCU can support 60 detectors in max.
LCD will show detectors' work status.

1 Zone Control Unit of Parking Guidance System:
1)The LCD in ZCU is to show the detector's work status.
2) Main function: it is to inquire about the relevant sensors status via RS485-B by turns, and forward the data to CCU by RS-485-C. Meanwhile, the ZCU forwards the command of CCU to LED screen via RS-485-B
The RS-485-B data bus can support 60 UD in max, whose addresses must not be set repeatedly.

2. How parking guidance system 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.