Abstract: Smart door locks have shown explosive growth in recent years, and their market share has increased year by year. The current standard lacks testing for the functional safety of smart door locks, in order to evaluate the reliability and safety of smart door locks more realistically and effectively, the key unlocking methods of intelligent door lock, such as IC card unlocking function, fingerprint unlocking function and electronic circuit core module are analyzed and a set of testing methods are developed. After many tests and continuous tracking, it was found that although the key unlocking of the door lock was upgraded and improved, but there is still the risk of replication and over-promotion, through the test results, it can be found that the major door lock enterprises have insufficient understanding of circuit reliability. Therefore, there is insufficient protection against circuit failures.

Key words: Smart door lock, Functional safety, Test method