Lighting accounts for 15-25% of building energy consumption. This article systematically reviews energy-saving retrofit paths from motion sensing to daylight harvesting.

As the "sensing nerves" of the Internet of Things, smart sensors are deeply penetrating smart cities, healthcare, smart vehicles and other fields, restructuring industrial ecosystems. Global smart sensor shipments reached 8.6 billion in 2025, with MEMS sensors accounting for over 52%. The market size is expected to reach US$78 billion by 2030, with the Asia-Pacific region contributing over 45% of global growth.

As core devices integrating sensing, computing and communication, smart sensors are key supports for Industry 4.0 and smart manufacturing. The global smart sensor market reached US$88.6 billion in 2025, with China’s market at about RMB 470 billion, growing at over 15% annually. The industrial sector accounts for 44.7%, making it the largest application scenario.

The energy monitoring system is the "digital dashboard" of building energy management. Through full-category, full-time and full-area energy data collection, analysis and visual presentation, it clearly sorts out the energy flow direction, accurately locates energy waste links, and provides solid data support for building energy-saving renovation and scientific management. Its energy-saving effect is quantifiable, traceable and verifiable.

Comprehensive Energy Management in Industrial Parks: Intelligent Collaboration Empowers Refined Management of All Energy Types With the in-depth advancement of industrial green transformation, industrial parks, as core scenarios of energy consumption, their energy management level is directly related to the implementation of energy conservation and carbon reduction goals and the optimization of enterprise operating costs. Traditional energy management in industrial parks has pain points such as extensive metering, delayed management and control, and vague cost allocation, which are difficult to meet the needs of high-quality modern industrial development. Today, through the collaborative deployment of intelligent meter reading systems and dense sensor networks, industrial parks have realized refined metering, precise management and control, and rational cost allocation of all energy types including water, electricity, gas and heat, establishing an efficient, energy-saving and intelligent comprehensive energy management system, and injecting new momentum into the green and low-carbon development of industrial parks.

Against the backdrop of the rapid development of the Industrial Internet of Things (IIoT) in industrial parks, the traditional industrial sensor model, which only collects raw data and transmits it to the cloud for processing, has gradually exposed many shortcomings. The new-generation industrial sensors with edge computing capabilities have successfully broken through this limitation. They can complete data preprocessing and preliminary decision-making on-site, significantly reducing the amount of data transmitted to the cloud and effectively improving the real-time response capability of the industrial IoT system, providing a more solid technical support for the refined management of comprehensive energy in industrial parks.

As GPT-6 debuts, humanoid robots run marathons, the low-altitude economy takes off, and 6G rises to a national strategy, an industrial revolution led by intelligent sensors is erupting. As the "five senses" of embodied intelligence, the "nerve endings" for the landing of large AI models, and the "entry point" for the Internet of Everything, intelligent sensors have been upgraded from supporting roles to the core hardware foundation of new quality productivity.