Reading In-Vehicle Unit number from IU Antenna.

IU number reader (In-Vehicle Unit Reader) interface board for IU Antenna. A interface board connects to the IU Antenna to allow computer to read the IU number of the vehicles via RS232 (PIC-306-IU) or Ethernet (PIC-316-IU).

In-Vehicle Unit is deployed on every vehicle in Singapore for the purpose of car traffic control. The ERP (electronic road pricing) system.

In Singapore, vehicles are fitted with an In-vehicle Unit (IU) or the newer On-Board Unit (OBU) for the ERP 2.0 system. Traditionally, many car parks use a short-range RFID antenna to read the IU when a vehicle enters or exits. This allows the system to automatically deduct parking fees from the driver’s stored-value card (e.g., CashCard, CEPAS card) inside the IU.

IU Antenna Interface Board (RS232 or Ethernet connection)

Carpark System
A cashless system that uses EPS antenna to read the number of the ERP-In-Vehicle Unit (IU) at the entry and exit of the carpark.

IU Number Reader Board

The interface board to the IU Antenna comes with 2 versions. The connection can be RS232 (PIC-306-IU) or Ethernet (PIC-316-IU)

Features

  • Read from IU Antenna for the Vehicle’s IU number.
  • RS232 or Ethernet connection
  • Power up with 12Vdc or 24Vdc
  • General purpose I/O allows connection to the vehicle presence sensor, barrier control.
  • Send commands to read the vehicle IU number, sensor, and control barrier.

IU Antenna Supplier and Price

The IU antenna that can typically be seen at the entrance of carparks in Singapore is from the company Mitsubishi Heavy Industries Ltd. It is used to read the IU (in-vehicle unit) number of the vehicle entering/exiting the carpark.

A new one can cost over $10K. The following are listing for a used IU antenna unit.

EPS Electronic Parking System Vendors

The following are some of the vendors providing parking systems in Singapore.