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Products & ServicesFinehood Sensors guarantees quality by using only imported-brand core components and has established long-term strategic partnerships with these suppliers. We boast a daily production capacity of 20,000 sensors per model, backed by lean management principles and a U-shaped production line that enables flexible manufacturing. Additionally, our sensor testing facilities are fully equipped, and after rigorous multi-stage performance tests, our products achieve an impressive 99.9% pass rate.
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Industry SolutionsFinehood Electronics strictly adheres to the ISO9001 quality management system and has successfully been recognized as a National High-Tech Enterprise, boasting multiple patents for its sensor products. Fufan ensures superior sensor quality by sourcing core components exclusively from renowned international brands, with whom we’ve established long-term, strategic partnerships.
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Artisanal Precision Manufacturing
Artisanal Precision ManufacturingFinehood Electronics boasts a dedicated R&D team whose members come from leading sensor companies in Japan, Europe, and North America. With mature and comprehensive sensor solutions at their disposal, the team can significantly reduce engineers' time spent selecting sensors, ultimately helping to shorten product development cycles.
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Support and CustomizationFinehood Electronics boasts a dedicated R&D team whose members come from leading sensor companies in Japan, Europe, and North America. With mature and comprehensive sensor solutions at their disposal, the team can significantly reduce engineers' time spent selecting sensors, ultimately helping to shorten product development cycles.
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AboutShenzhen Finehood Electronics Co., Ltd. was established in 2011 and is a technology-driven manufacturer integrating sensor R&D, production, and sales.
Detailed information
18
2025
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06
Application of proximity sensors on platform screen doors
Application of proximity sensors in platform screen doors:
The subway is a vital mode of transportation in cities. Currently, many major cities in China have subway systems, while several others are either constructing or planning to build them. Subways make it incredibly convenient for people to travel, but subway safety remains a significant concern. We often see incidents in the news where passengers get caught in subway doors due to overcrowding. Sensors—particularly remote proximity sensors—are excellent tools for achieving automation and smart functionality, and they will soon be integrated into PSD technology applications, helping to significantly reduce the occurrence of subway-related accidents.
The detection principle of the remote proximity sensor relies on the influence of an external magnetic field on the proximity switch, sensing the magnetic loss caused by eddy currents induced on the surface of conductive materials. An alternating magnetic field is generated within the detection coil, and any impedance changes—triggered by the eddy currents induced in the metallic object being detected—are picked up. Alternatively, another approach involves aluminum detection sensors that measure the phase component of frequency, as well as all-metal sensors that detect only the impedance-change component via the working coil. Meanwhile, the transformer’s condition is monitored at both the detector and sensor interfaces.
Optoelectronic switch sensors are a common component in many PSD systems used to detect whether doors are open or closed. Typically, two magnetic switches are employed to monitor the door’s opening and closing states. Additionally, Hall switches are also integrated into the system. As sensor technology continues to advance, it will increasingly become a cornerstone of all PSD applications. It’s clear that companies mastering the integration of multiple sensor technologies will emerge as market leaders. After all, intelligence and automation are tightly interconnected—driven forward by the power of cutting-edge sensing solutions.
Since long-range and short-range sensors can perform detection in a non-contact manner, they prevent wear and damage to the objects being inspected. This is also a key reason why they are ideally suited for installation on subways. As the performance of short-range sensors continues to improve, they will find applications in an even wider range of settings. In the future, these sensors won’t just be widely used in subway doors—they’ll also become commonplace in other types of barrier gates, such as those found on buses.
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