Tunnel illumination detector: Real time monitoring of tunnel lighting intensity, automatic adjustment of lighting brightness [Model recommendation: TW-DN1, IoT integrated device, Tianwei Environment supports customized services] Tunnel illumination detector is a core device that integrates real-time monitoring and intelligent regulation. By sensing changes in tunnel lighting intensity with high precision, it dynamically adjusts lighting brightness, ensuring driving safety and achieving energy conservation and consumption reduction. Using high-sensitivity silicon photodiodes or phototransistors, it responds quickly to visible light bands (400-700nm) and can accurately capture small changes in illumination. The sensor surface is covered with a special filter to filter out interference bands such as infrared and ultraviolet, ensuring that the measurement data is consistent with human visual perception and avoiding misjudgment caused by non visible light interference. The built-in microprocessor analyzes sensor signals in real time, with a response time of ≤ 0.1 seconds, and can quickly capture instantaneous illumination fluctuations (such as vehicle light interference and lamp failures). Covering 0-2000 lux (expandable to 100000 lux), with a resolution of 0.1 lux, it meets the full scene requirements of tunnels from darkness to strong light.

Product Overview:

Highway tunnels are special sections of highways, with narrow spatial environments, large variations in lighting, and unclear visibility as a special tubular structure. Unlike the bright and spacious roads outside the tunnel, the process of vehicles entering and passing through the tunnel is a process of entering from the bright into the black hole, and then moving from the black hole to the bright. The process of transitioning from light to dark or from dark to light requires an adaptation process. During this adaptation process, drivers find it difficult to identify road targets or objects inside the tunnel, resulting in visual psychological barriers or obstacles that make driving appear unsafe. The purpose of tunnel lighting is to create a good working visual environment quality inside the tunnel, ensuring that vehicles traveling during the day and night can safely approach, pass through, and pass through the tunnel at the designed speed.

Tunnel light intensity detector is an efficient lighting control system designed to address visual adaptation issues caused by differences in brightness and darkness inside and outside tunnels. In response to the demand for lighting control in domestic highway tunnels, our company has developed a tunnel illumination detector and an external brightness detector to meet market demands. Its overall design is versatile and can meet the requirements of harsh working environments in the wild. It has high reliability and low maintenance, the latest microprocessor technology, fully digital operation, and easy installation and debugging. This product aims to improve the scientific and energy efficiency of tunnel lighting by accurately measuring the brightness of the tunnel entrance and automatically adjusting the internal lighting, ensuring driving safety requirements and energy-saving effects, while complying with the requirements of the "Design Specification for Highway Tunnel Ventilation and Lighting".

Installation method:

The tunnel light intensity monitor is installed on the walls of the designated area inside the tunnel. In order to avoid damage caused by accidents or car debris, it needs to be installed at a height of about 4 meters and at an appropriate position greater than 10 meters from the tunnel entrance. Has high reliability and low maintenance The latest microprocessor technology, WAN fully digital operation, easy installation and debugging.

Product Features:

According to the CIE specified human visual spectrum curve, a specially designed high-efficiency filter is used for calibration, which conforms to visual characteristics

Continuous linear proportional output, corresponding to accurate and sensitive measurement range of the equipment

Multiple signal output modes to adapt to different usage modes

Local data storage to avoid data loss in abnormal situations

The instrument casing has IP66 protection function, and the surface is coated with special paint, which has anti-corrosion ability

There is an output signal protection function to prevent abnormal situations from affecting user devices

Equipped with zero point compensation function

Technical Specifications:

Measurement range: 0-20000 lux

Measurement accuracy: 0.01lux

Measurement error: ± 1%

Measurement angle: Vertical ≥ 20 °, Horizontal ≥ 20 °

Analog output: 4~20mA

Transmission interface: RS485

Load impedance: 750 Ω

Working temperature: -40 ℃ to+85 ℃

Working humidity: 0-100% RH

Average Wu failure time: ≥ 50000 hours

Protection level: IP66

Power supply mode: AC 90-305V

Installation method: Wall mounted installation