Sensor Compliance Development for Smart Lift Safety Application Based on IEEE 2668

Lift is an indispensable means of transportation in our daily life. Lift safety is a great concern with large-scale deployment and heavy use. To enhance lift safety, Internet of Things (IoT) devices have been applied in lift systems to provide smart services, such as remote control, emergency alarms, etc. However, large amounts of interconnections from different end devices embedded with different sensors cause difficulties in interoperability. To be specific, different end devices from different manufactures have their own hardware and software design, which is difficult to integrate into one lift system. In addition, different sensors (e.g., current sensor for motor, brake, etc.) has different data structure, data precision, etc., which is difficult to verify the data accuracy. To address these interoperability issues, a Sensor Compliance (SC) design based on IEEE 2668 standard is developed for lift safety application. In SC design, standardized interface with Digital Information Specification (DIS) is developed to store essential sensor information, etc. Through standardized SC design, different sensors from different manufacturers can be integrated, which enables sensor-plug-and-play and improve system interoperability. Besides, data accuracy evaluation is performed on the prototype, which verifies the effectiveness and efficiency of the SC design for lift safety. Through standardized evaluation, guidance on blending of lift safety to evolve into better performance.