With the development of Internet of Things technology,problems such as inconvenient key management,prominent security risks and inability to link smart devices of traditional door locks are increasingly prominent.Intelligent door locks provide full-scene access control solutions for families,enterprises and public spaces through technologies such as biometrics,remote management and data encryption.
 

Overview of single-chip intelligent door lock scheme based on MCU CH584.

Single-chip intelligent door lock scheme adopts highland barley RISC-V multimode wireless SoC——MCU CH584,and realizes deep cooperation between software and hardware through self-developed RF,baseband algorithm and protocol stack technology,with high response speed and low operating power consumption.Compared with the traditional dual-chip architecture of master control and transceiver,this MCU single-chip scheme integrates functions such as BLE,NFC,touch buttons and segmented LCD into a single chip,which greatly simplifies peripheral circuits and improves system integration.

MCU single chip microcomputer CH584 provides a main frequency of up to 78MHz,equipped with 512KB ROM and 96KB RAM,which realizes zero waiting operation and has superior performance.This scheme supports Bluetooth configuration and door lock management,integrates NFC card unlocking,and has built-in fingerprint identification algorithm.It also supports enhanced waterproof touch buttons and OLED/TFT high frame rate screen,and is compatible with LVGL graphics library,providing comprehensive and reliable technical support for smart door locks.
 

The core function of MCU CH584

1.BLE communication

The MCU is integrated with 2.4GHz RF transceiver,baseband and link control unit,with a receiving sensitivity of-95dBm,and supports programmable+4.5dBm transmission power.In 2.4G mode,the data reporting rate of 8kHz can be achieved,and the communication is stable and efficient.
 

2.NFC near field communication

MCU MCU has built-in near-field communication interface,supports card reader mode and card mode,and is compatible with ISO14443-A cards,which can realize reading,writing and related operations of access cards and improve the convenience of users to unlock.
 

3.Enhance touch buttons

MCU single chip microcomputer has 14 channels of TouchKey,and adopts enhanced drive shielding technology,which significantly improves the anti-interference performance and touch sensitivity.Even under the condition of long wiring or dense wiring,it can still run stably and support waterproof and anti-fog functions,which is suitable for humid environment.
 

4.Segmented LCD driver

MCU single chip microcomputer supports direct driving of segment code screen,is compatible with LCD panel with a maximum of 112 points(28×4),meets the display requirements of intelligent door locks,and has high system integration without external driving chip.
 

MCU single chip CH584 intelligent door lock scheme application block diagram

the measured power consumption of single-chip smart door lock

The power consumption in sleep state is 32μA(wake up once every 500 ms,and then perform Bluetooth broadcasting,touch scanning and NFC card inspection);

The power consumption of unlocking by swiping the card is 15.02mA,and the duration is 5 s;

The power consumption of key unlocking is 14.62mA,and the duration is 15 s.
 

Summary of the characteristics of single-chip intelligent door lock scheme based on MCU single chip CH584.

The single-chip intelligent door lock scheme based on MCU CH584 integrates many core functions such as wireless communication,touch sensing and display driver,and has the advantages of high performance and low power consumption.This scheme is suitable for a variety of intelligent access control scenarios,which can effectively improve the security,reliability and user experience of the door lock system,and is an ideal choice for smart door locks in families,offices and public areas.If you need technical consultation,selection requirements or application support of MCU,please contact us.


Keywords：MCU single chip microcomputer

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