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Electronic Lock with Fingerprint Identification

Overview

Description

The smart lock is a rapidly growing trend in smart home appliances. Users can control smart locks by using fingerprints, Near Field Communication (NFC), capacitive touch, or low-power Bluetooth® communication. With a low-power design, Narrowband Internet of Things (NB-IoT) is also an option. As the RX130 32-bit MCU has integrated capacitive touch capabilities, it enables smaller board design and reduced cost. For advanced systems with more sophisticated fingerprint modules, an upgrade to the RX651 is an option for the algorithm design.

This solution can support Bluetooth communication with mobile or smart home routers. Additionally, the NB-IoT modem can directly support WLAN and directly send an alarm condition to the cloud.

System Benefits:

  • Highly integrated RX130 with built-in capacitive touch
  • Low power design for extended battery life
  • Shock sensor monitoring to alert for potential tampering and break-ins

Comparison

Applications

Block Diagram

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DiagramConnector Arrow.40NB-IoTNB-IoTNB-IoTCN038CN038CN038Touch KeyTouch KeySheet.66Sheet.67Sheet.68Sheet.69Sheet.70Sheet.71Sheet.72Sheet.73Sheet.74Touch Key.75Touch KeyTouch KeyConnector ArrowBuzzerSpeakerspeaker_8_Sheet.50Sheet.51Sheet.52Sheet.53BuzzerBuzzerBuzzerConnector double arrowOp AmpOp AmpOp AmpMCUMPU.7MCUMCUUARTUARTUARTGPIO.11GPIOGPIOCTSUCTSUCTSUSPI.13SPISPIUART2UARTUARTUART3UARTUARTADCADCADCFingerprint Recognition ModuleFingerprint Recognition ModuleFingerprint Recognition ModuleNFCNFCNFCBLEBLEBLEConnector double arrow.89Connector double arrow.90Connector double arrow.91Connector Arrow.92Op Amp.933.3V/3A LDO3.3V/3A LDOConnector double arrow.96Connector Arrow.98Connector Arrow.99Shock SensorShock SensorShock SensorConnector double arrow.101Connector 1.140Connector Arrow.103Connector 1.140.104Connector Line3.3V/150mA LDO3.3V/150mA LDO3.3V/150mA LDO3.3V3.3V3.3VConnector Arrow.107Connector Arrow.108Connector 1.140.109Battery.27Sheet.112Sheet.113Sheet.114BatteryBatteryBattery3.3V.1163.3V3.3V
Exiting Interactive Block Diagram

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