Dalam catatan ini, kita akan membina sistem kehadiran berdasarkan RFID, yang dapat mencatat kehadiran 12 pelajar / kakitangan untuk jangka masa tertentu dan sistem ini dapat merekodkan kehadiran hingga 255 orang.

Apa itu Sistem Kehadiran RFID

Kami tidak memerlukan pengenalan mengenai sistem kehadiran berdasarkan RFID, ia digunakan di kolej, pejabat, perpustakaan untuk mengetahui berapa kali seseorang atau berapa banyak orang yang masuk dan keluar pada jam berapa.

Dalam projek ini kita akan membina sistem kehadiran berdasarkan RFID yang paling sederhana yang tidak menyulitkan projek.

“simbol elektrik asas dan maknanya ”

Dalam projek ini kita akan menggunakan modul RTC, yang digunakan untuk mengaktifkan dan menonaktifkan sistem kehadiran dalam jangka waktu tertentu, sehingga kita dapat menjaga para pendatang yang lambat.

Modul RFID 'RFID-RC522' yang dapat melakukan operasi membaca dan menulis pada tag RFID berasaskan NXP. NXP adalah pengeluar utama tag RFID di dunia dan kami boleh mendapatkannya di kedai dalam talian dan luar talian dengan mudah.

Paparan LCD 16 x 2 digunakan, untuk menunjukkan maklumat seperti waktu, tarikh, jumlah kehadiran, dll.

Dan akhirnya papan Arduino digunakan yang merupakan otak projek . Anda boleh memilih mana-mana versi papan.

Sekarang mari kita beralih ke diagram skematik:

Sambungan paparan Arduino ke LCD:

Sambungkan pendawaian seperti pada rajah di bawah dan gunakan potensiometer 10 kilo ohm untuk menyesuaikan kontras.

Sambungan modul Arduino ke RFID:

Modul RFID mesti digerakkan oleh 3.3V dan 5V boleh merosakkan komponen on board. Modul RFID-RC522 berfungsi pada protokol komunikasi SPI semasa berkomunikasi dengan Arduino.

Litar selebihnya:

Arduino boleh dihidupkan dari penyesuai dinding 9V. Terdapat bel dan LED untuk menunjukkan bahawa kad tersebut dikesan. Terdapat 4 butang yang disediakan untuk melihat kehadiran, membersihkan memori dan butang 'ya' dan 'tidak'.

Itu menyimpulkan bahagian perkakasan.

Sila muat turun fail perpustakaan berikut:

Pautan1: github.com/PaulStoffregen/DS1307RTC

Pautan2: github.com/PaulStoffregen/Time

Pautan3: github.com/miguelbalboa/rfid.git

Sekarang kita harus menetapkan masa yang tepat untuk modul RTC untuk melakukan ini, ikuti langkah-langkah di bawah ini dengan persediaan perkakasan yang telah selesai.

Buka Arduino IDE.
Navigasi ke Fail> Contoh> DS1307RTC> SetTime.
Muat naik kod.

Setelah kod dimuat naik ke Arduino, buka monitor bersiri . Sekarang RTC diselaraskan dengan masa komputer anda.

Sekarang anda mesti mencari UID atau nombor pengenalan unik dari semua 12 kad / tag RFID. Untuk mencari UID, muat naik kod di bawah dan buka monitor bersiri.

//-------------------------Program developed by R.Girish------------------// #include #include #define SS_PIN 10 #define RST_PIN 9 MFRC522 rfid(SS_PIN, RST_PIN) MFRC522::MIFARE_Key key void setup() { Serial.begin(9600) SPI.begin() rfid.PCD_Init() } void loop() { if ( ! rfid.PICC_IsNewCardPresent()) return if ( ! rfid.PICC_ReadCardSerial()) return MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak) if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI && piccType != MFRC522::PICC_TYPE_MIFARE_1K && piccType != MFRC522::PICC_TYPE_MIFARE_4K) { Serial.println(F('Your tag is not of type MIFARE Classic, your card/tag can't be read :(')) return } String StrID = '' for (byte i = 0 i <4 i ++) { StrID += (rfid.uid.uidByte[i] <0x10 ? '0' : '') + String(rfid.uid.uidByte[i], HEX) + (i != 3 ? ':' : '' ) } StrID.toUpperCase() Serial.print('Your card's UID: ') Serial.println(StrID) rfid.PICC_HaltA () rfid.PCD_StopCrypto1 () } //-------------------------Program developed by R.Girish------------------//

Buka monitor bersiri.
Imbas kad / tag pada modul RFID.
Sekarang anda akan melihat beberapa kod heksadesimal untuk setiap kad.
Tuliskan, kami akan memasukkan data tersebut dalam program berikutnya.

Program utama:

//-------------------------Program developed by R.Girish------------------// #include #include #include #include #include #include #include #define SS_PIN 10 #define RST_PIN 9 MFRC522 rfid(SS_PIN, RST_PIN) MFRC522::MIFARE_Key key const int rs = 7 const int en = 6 const int d4 = 5 const int d5 = 4 const int d6 = 3 const int d7 = 2 const int LED = 8 boolean ok = false LiquidCrystal lcd(rs, en, d4, d5, d6, d7) const int list = A0 const int CLM = A1 const int yes = A2 const int no = A3 int H = 0 int M = 0 int S = 0 int i = 0 int ID1 = 0 int ID2 = 0 int ID3 = 0 int ID4 = 0 int ID5 = 0 int ID6 = 0 int ID7 = 0 int ID8 = 0 int ID9 = 0 int ID10 = 0 int ID11 = 0 int ID12 = 0 char UID[] = '' // **************************** SETTINGS ************************ // // ------ From -------- // (Set the time range for attendance in hours 0 to 23) int h = 21 // Hrs int m = 00 // Min // ------- To ------- // int h1 = 21 // Hrs int m1 = 50 //Min // ---------------- SET UIDs ----------------- // char UID1[] = 'F6:97:ED:70' char UID2[] = '45:B8:AF:C0' char UID3[] = '15:9F:A5:C0' char UID4[] = 'C5:E4:AD:C0' char UID5[] = '65:1D:AF:C0' char UID6[] = '45:8A:AF:C0' char UID7[] = '15:9F:A4:C0' char UID8[] = '55:CB:AF:C0' char UID9[] = '65:7D:AF:C0' char UID10[] = '05:2C:AA:04' char UID11[] = '55:7D:AA:04' char UID12[] = 'BD:8A:16:0B' // -------------- NAMES -----------------------// char Name1[] = 'Student1' char Name2[] = 'Student2' char Name3[] = 'Student3' char Name4[] = 'Student4' char Name5[] = 'Student5' char Name6[] = 'Student6' char Name7[] = 'Student7' char Name8[] = 'Student8' char Name9[] = 'Student9' char Name10[] = 'Student10' char Name11[] = 'Student11' char Name12[] = 'Student12' // ********************************************************** // void setup() { Serial.begin(9600) lcd.begin(16, 2) SPI.begin() rfid.PCD_Init() pinMode(yes, INPUT) pinMode(no, INPUT) pinMode(list, INPUT) pinMode(LED, OUTPUT) pinMode(CLM, INPUT) digitalWrite(CLM, HIGH) digitalWrite(LED, LOW) digitalWrite(yes, HIGH) digitalWrite(no, HIGH) digitalWrite(list, HIGH) } void loop() { if (digitalRead(list) == LOW) { Read_data() } if (digitalRead(CLM) == LOW) { clear_Memory() } tmElements_t tm if (RTC.read(tm)) { lcd.clear() H = tm.Hour M = tm.Minute S = tm.Second lcd.setCursor(0, 0) lcd.print('TIME:') lcd.print(tm.Hour) lcd.print(':') lcd.print(tm.Minute) lcd.print(':') lcd.print(tm.Second) lcd.setCursor(0, 1) lcd.print('DATE:') lcd.print(tm.Day) lcd.print('/') lcd.print(tm.Month) lcd.print('/') lcd.print(tmYearToCalendar(tm.Year)) delay(1000) } else { if (RTC.chipPresent()) { lcd.setCursor(0, 0) lcd.print('RTC stopped!!!') lcd.setCursor(0, 1) lcd.print('Run SetTime code') } else { lcd.clear() lcd.setCursor(0, 0) lcd.print('Read error!') lcd.setCursor(0, 1) lcd.print('Check circuitry!') } } if (H == h) { if (M == m) { ok = true } } if (H == h1) { if (M == m1) { ok = false } } if ( ! rfid.PICC_IsNewCardPresent()) return if ( ! rfid.PICC_ReadCardSerial()) return MFRC522::PICC_Type piccType = rfid.PICC_GetType(rfid.uid.sak) if (piccType != MFRC522::PICC_TYPE_MIFARE_MINI && piccType != MFRC522::PICC_TYPE_MIFARE_1K && piccType != MFRC522::PICC_TYPE_MIFARE_4K) { Serial.println(F('Your tag is not of type MIFARE Classic, your card/tag can't be read :(')) } String StrID = '' for (byte i = 0 i <4 i ++) { StrID += (rfid.uid.uidByte[i] <0x10 ? '0' : '') + String(rfid.uid.uidByte[i], HEX) + (i != 3 ? ':' : '' ) } StrID.toUpperCase() if (ok == false) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Attendance is') lcd.setCursor(0, 1) lcd.print('Closed.') delay(1000) } if (ok) { //-----------------------------------// if (StrID == UID1) { ID1 = EEPROM.read(1) ID1 = ID1 + 1 if (ID1 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID1 != 256) { EEPROM.write(1, ID1) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID2) { ID2 = EEPROM.read(2) ID2 = ID2 + 1 if (ID2 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID2 != 256) { EEPROM.write(2, ID2) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID3) { ID3 = EEPROM.read(3) ID3 = ID3 + 1 if (ID3 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID3 != 256) { EEPROM.write(3, ID3) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID4) { ID4 = EEPROM.read(4) ID4 = ID4 + 1 if (ID4 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID4 != 256) { EEPROM.write(4, ID4) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID5) { ID5 = EEPROM.read(5) ID5 = ID5 + 1 if (ID5 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID5 != 256) { EEPROM.write(5, ID5) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID6) { ID6 = EEPROM.read(6) ID6 = ID6 + 1 if (ID6 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID6 != 256) { EEPROM.write(6, ID6) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID7) { ID7 = EEPROM.read(7) ID7 = ID7 + 1 if (ID7 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID7 != 256) { EEPROM.write(7, ID7) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID8) { ID8 = EEPROM.read(8) ID8 = ID1 + 1 if (ID8 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID8 != 256) { EEPROM.write(8, ID8) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID9) { ID9 = EEPROM.read(9) ID9 = ID9 + 1 if (ID9 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID9 != 256) { EEPROM.write(9, ID9) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID10) { ID10 = EEPROM.read(10) ID10 = ID10 + 1 if (ID10 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID10 != 256) { EEPROM.write(10, ID10) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID11) { ID11 = EEPROM.read(11) ID11 = ID11 + 1 if (ID11 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID11 != 256) { EEPROM.write(11, ID11) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } //-----------------------------------// if (StrID == UID12) { ID12 = EEPROM.read(12) ID12 = ID12 + 1 if (ID12 == 256) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Memory is Full') lcd.setCursor(0, 1) lcd.print('Please Clear All.') for (i = 0 i <20 i++) { digitalWrite(LED, HIGH) delay(100) digitalWrite(LED, LOW) delay(100) } i = 0 return } if (ID12 != 256) { EEPROM.write(12, ID12) lcd.clear() lcd.setCursor(0, 0) lcd.print('Your Attendance') lcd.setCursor(0, 1) lcd.print('Registered !!!') digitalWrite(LED, HIGH) delay(1000) digitalWrite(LED, LOW) return } } if (StrID != UID1 || StrID != UID2 || StrID != UID3 || StrID != UID4 || StrID != UID5 || StrID != UID6 || StrID != UID7 || StrID != UID8 || StrID != UID9 || StrID != UID10 || StrID != UID11 || StrID != UID12) { lcd.clear() lcd.setCursor(0, 0) lcd.print('Unknown RFID') lcd.setCursor(0, 1) lcd.print('Card !!!') for (i = 0 i <3 i++) { digitalWrite(LED, HIGH) delay(200) digitalWrite(LED, LOW) delay(200) } } rfid.PICC_HaltA () rfid.PCD_StopCrypto1() } } void Read_data() { lcd.clear() lcd.setCursor(0, 0) lcd.print(Name1) lcd.print(':') lcd.print(EEPROM.read(1)) lcd.setCursor(0, 1) lcd.print(Name2) lcd.print(':') lcd.print(EEPROM.read(2)) delay(2000) lcd.clear() lcd.setCursor(0, 0) lcd.print(Name3) lcd.print(':') lcd.print(EEPROM.read(3)) lcd.setCursor(0, 1) lcd.print(Name4) lcd.print(':') lcd.print(EEPROM.read(4)) delay(2000) lcd.clear() lcd.setCursor(0, 0) lcd.print(Name5) lcd.print(':') lcd.print(EEPROM.read(5)) lcd.setCursor(0, 1) lcd.print(Name6) lcd.print(':') lcd.print(EEPROM.read(6)) delay(2000) lcd.clear() lcd.setCursor(0, 0) lcd.print(Name7) lcd.print(':') lcd.print(EEPROM.read(7)) lcd.setCursor(0, 1) lcd.print(Name8) lcd.print(':') lcd.print(EEPROM.read(8)) delay(2000) lcd.clear() lcd.setCursor(0, 0) lcd.print(Name9) lcd.print(':') lcd.print(EEPROM.read(9)) lcd.setCursor(0, 1) lcd.print(Name10) lcd.print(':') lcd.print(EEPROM.read(10)) delay(2000) lcd.clear() lcd.setCursor(0, 0) lcd.print(Name11) lcd.print(':') lcd.print(EEPROM.read(11)) lcd.setCursor(0, 1) lcd.print(Name12) lcd.print(':') lcd.print(EEPROM.read(12)) delay(2000) } void clear_Memory() { lcd.clear() lcd.print(0, 0) lcd.print(F('Clear All Data?')) lcd.setCursor(0, 1) lcd.print(F('Long press: Y/N')) delay(2500) Serial.print('YES') if (digitalRead(yes) == LOW) { EEPROM.write(1, 0) EEPROM.write(2, 0) EEPROM.write(3, 0) EEPROM.write(4, 0) EEPROM.write(5, 0) EEPROM.write(6, 0) EEPROM.write(7, 0) EEPROM.write(8, 0) EEPROM.write(9, 0) EEPROM.write(10, 0) EEPROM.write(11, 0) EEPROM.write(12, 0) lcd.clear() lcd.setCursor(0, 0) lcd.print(F('All Data Cleared')) lcd.setCursor(0, 1) lcd.print(F('****************')) delay(1500) } if (digitalRead(no) == LOW) { return } } //-------------------------Program developed by R.Girish------------------//

// ---------------- SET UID ----------------- //

char UID1 [] = 'F6: 97: ED: 70'

char UID2 [] = '45: B8: AF: C0 '

char UID3 [] = '15: 9F: A5: C0 '

char UID4 [] = 'C5: E4: AD: C0'

char UID5 [] = '65: 1D: AF: C0 '

char UID6 [] = '45: 8A: AF: C0 '

char UID7 [] = '15: 9F: A4: C0 '

char UID8 [] = '55: CB: AF: C0 '

char UID9 [] = '65: 7D: AF: C0 '

char UID10 [] = '05: 2C: AA: 04 '

char UID11 [] = '55: 7D: AA: 04 '

char UID12 [] = 'BD: 8A: 16: 0B'

// ---------------------------------------------- //

Anda mempunyai nama tempat di sini:

// -------------- NAMA ----------------------- //

char Name1 [] = 'Pelajar1'

char Name2 [] = 'Pelajar2'

char Name3 [] = 'Pelajar3'

char Name4 [] = 'Pelajar4'

char Name5 [] = 'Pelajar5'

char Name6 [] = 'Pelajar6'

char Name7 [] = 'Pelajar7'

char Name8 [] = 'Pelajar8'

char Name9 [] = 'Pelajar9'

char Name10 [] = 'Pelajar10'

char Name11 [] = 'Pelajar11'

char Name12 [] = 'Pelajar12'

// -------------------------------------------- //

Gantikan student1, student2 dengan mana-mana nama yang anda mahukan atau tinggalkan seperti sedia ada.

Anda harus menetapkan waktu dari kapan dan ketika sistem kehadiran harus aktif, selebihnya waktu sistem tidak akan mendaftarkan kehadiran ketika kami mengimbas tag / kad RFID:

// ------ Dari -------- //

int h = 21 // Jam

int m = 00 // Min

// ------- Ke ------- //

int h1 = 21 // Jam

int m1 = 50 // Min

// ------------------------- //

Bahagian atas adalah waktu permulaan dan bahagian bawah adalah waktu tamat. Anda mesti memasukkan waktu dalam jam dari 0 hingga 23 dan minit dari 00 hingga 59.