PREPAID COFFEE DISPENSER WITH BIOMETRIC RECHARGE USING FINGER PRINT MODULE (Electronics project)

PREPAID COFFEE DISPENSER WITH BIOMETRIC RECHARGE USING FINGER PRINT MODULE

Technical Specifications:

Title of the project                  :           Prepaid coffee dispenser with biometric recharge using finger print module.

Domain                                   :           Biometrics & Embedded Design

Software                                 :           Embedded C, Keil, Proload

Microcontroller                       :           AT89S52

Power Supply                          :           +5V, 500mA Regulated Power Supply

Display                                    :           LED 5mm, 16 X 2 LCD

Crystal                                     :           11.0592MHz

Biometric Sensor                     :           FIM3030N

Storage Capacity                     :           Up to 100 finger print images

Image Registration                  :           Through Serial Communication

Applications                            :           Industries, Banks, Office, Library.

ABSTRACT:

           According ancient Greek scripts BIOMETRICS means study of life. Biometrics studies commonly include fingerprint, face, iris, voice, signature, and hand geometry recognition and verification. Many other modalities are in various stages of development and assessment. Among these available biometric traits Finger Print proves to be one of the best traits providing good mismatch ratio and also reliable. The present scenario to operate a bank locker is with locks which are having keys. By this we can’t say that we are going to provide good security to our lockers. To provide perfect security and to make our work easier, we are taking the help of two different technologies viz. EMBEDDED SYSTEMS and BIOMETRICS.

                 Firstly discussing about Biometrics we are concentrating on Fingerprint scanning. For this we are using FIM 3030N high voltage module as a scanner. This module has in-built ROM, DSP and RAM. In this we can store up to 100 users fingerprints. This module can operate in 2 modes they are Master mode and User mode. We will be using Master mode to register the fingerprints which will be stored in the ROM present on the scanner with a unique id.

              When this module is interfaced to the microcontroller, we will be using it in user mode. In this mode, we will be verifying the scanned images with the stored images. When coming to our application the images of the persons who are authorized will be stored in the module with a unique id.  To prove that the persons are authorized to enter that area they need to scan their images.

          

  This scanner is interfaced to AT89S52 microcontroller. By using this controller we will be controlling the scanning process. After the scanning has been completed the coffee dispenser machine will be automatically activated. If an unauthorized person tries to scan his image then the machine doesn’t activate for him and the buzzer gives sound.

              The project uses regulated 5V, 500mA power supply. 7805 three terminal voltage regulator is used for voltage regulation. Bridge type full wave rectifier is used to rectify the ac out put of secondary of 230/12V step down transformer.

         

Block Diagram:

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