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International Journal for Research in Applied Science & Engineering Technology (IJRASET)
ISSN: 2321-9653; IC Value: 45.98; SJ Impact Factor: 7.538
Volume 11 Issue IV Apr 2023- Available at www.ijraset.com
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2) Proximity Sensor
Proximity An item or impediment in front of a sensor may be detected by a sensor's sensor. Whenever an item gets close, the sensor detects it by measuring the reflected light from the object and sending off infrared light. For example, it may be used in robots to avoid obstacles, for automated doors, for parking assist devices, or security alarm systems, or as a contactless tachometer by sensing the RPM of rotating objects such as fan blades.
Detection of things in front with a low digital output
Passive RFID transponder tags may be read up to 7 cm away from the card reader using RFID Card Readers, which are a low-cost alternative. Among the many uses for this RFID Card Reader are access control, automated identification, robotics navigation, inventory monitoring, payment systems, and vehicle immobilization, to name just a few of the more common ones. A baud rate of 9600 is used to generate a unique identifying code for each RFID tag that is within the range of the reader. A microcontroller or PC may read data from an RFID reader through an interface.
4) Features a) Analyzing RFID transponders using a passive technique at a low cost b) 5 V TTL level 9600 bps serial interface for microcontrollers c) Valid RFID Tag detection is indicated by a beep and an LED light. d) For 125 Khz RFID Cards or Keychains, the range is up to 7 cm.
