The RFID card reader for a customized embedded design

Security and fire alarm detectors, access control 24.02.2020 18:42 24.02.2020 18:42

The RFID reader of C-WG-0503R identifiers is also available for customer-designed mechanical placement of the scanning part.

The RFID reader can be ordered without the mechanical part; in this case, the reader will be supplied as a board fitted with a sensor with an antenna and other components (a LED, a buzzer, terminal blocks) and then it can be mounted into various types of mechanical applications.

The RFID reader is identical with the version described in Chapter 8.6.4, including the interconnection of both parts, with only the mechanical part of the specific design missing (typically the plug).

It is important to ensure that the sensor is not influenced by a proximity of electrically conductive objects (a metal cover, etc.).

Maximum care should also be taken during the handling and installation to avoid damaging the module electronics.

 


Fig. 1, The dimensions and placement of the holes for mounting the scanning part of the RFID module

 

Notes:

  1. By default, both parts of the module (the RFID scanning part and the embedded C-WG-0503S part) are interconnected with separate approx. 100 mm long wires. The connection can be extended up to approx. 1 m; the diameter of wires in the cable should be at least 0.5 mm.

  2. The free inputs AI/DI5 and AI/DI4 can be used e.g. for connecting temperature sensors or a PIR detector, etc. The detectors can be powered from the +12V output of the C-WG-0503S module; a maximum of 25 mA is available (a maximum consumption of the powered detectors).

  3. There should be minimum of electrically conductive objects in close proximity to the sensor with the antenna (the black cube), as they could have a negative impact on the range of the antenna. Every customized design and its impact on the range should be tested.

  4. The module should be mounted with the antenna (the black cube) facing the scanned identifier; the terminal should be located on the rear side of the board.

  5. The reading range is up to 12 cm and depends on the mechanical construction of the sensor and the type of scanned identifier.