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Intrinsically safe fiber optic camera for coal mines with Ex ib I Mb certification, 0.2 Lux low-light imaging, 1310 nm optical transmission, and IP54 stainless steel housing.
The Mining Intrinsically Safe Fiber Optic Camera is a purpose-built surveillance device designed for explosive hazardous environments such as coal mines. Featuring fiber optic signal interfacing, it delivers strong electromagnetic interference resistance, long transmission distance, large bandwidth, and minimal signal loss — meeting the demanding requirements for high-quality, long-distance image monitoring in underground applications.
In the electromagnetic-dense environment of an underground coal mine — where heavy machinery, power cables, and communication equipment generate significant interference — traditional copper-cable cameras suffer from signal degradation and image quality loss over distance. The Mining Intrinsically Safe Fiber Optic Camera is engineered specifically to overcome these challenges, using fiber optic transmission to deliver pristine image quality over distances that copper-based systems simply cannot achieve.
The intrinsically safe design is the foundational safety principle of this device. Unlike flameproof equipment that contains explosions, intrinsically safe equipment is designed so that its electrical circuits cannot produce sparks or thermal effects sufficient to ignite the surrounding explosive atmosphere under any condition — including fault conditions. This approach eliminates hazards at their source, making the camera suitable for deployment in the most dangerous zones of a mine without requiring bulky explosion-containing enclosures.
The device features dual signal output capabilities: video electrical signal output and video optical signal output, providing flexibility to adapt to different monitoring network architectures. The optical signal transmitter operates at a wavelength of 1310 nm with emission power ranging from −15 dBm to 0 dBm, ensuring reliable transmission over the long cable runs typical of underground installations. The electrical video signal output amplitude is 0.7 V ±0.3 V, compatible with standard video processing equipment.
Low-light performance is critical in underground environments where ambient illumination is often negligible. The camera achieves clear imaging at illumination levels as low as 0.2 Lux, with a horizontal resolution of 400 TVL and a gray-scale discrimination level of 7 grades. The housing is constructed from 1Cr17 stainless steel for corrosion resistance in the humid, acidic underground atmosphere, with an IP54 protection rating. The compact form factor (266 mm × 140 mm × 129 mm) and weight of approximately 2.5 kg facilitate installation in space-constrained locations, and the 12 V DC operating voltage with current draw of no more than 0.7 A ensures compatibility with standard mine power systems.
| Parameter | Value |
|---|---|
| Explosion Protection | Intrinsically safe (Ex ib I Mb) |
| Housing Material | 1Cr17 stainless steel |
| Protection Rating | IP54 |
| Dimensions | 266 mm × 140 mm × 129 mm |
| Weight | ~2.5 kg |
| Operating Voltage | DC 12V |
| Operating Current | ≤0.7 A |
| Horizontal Resolution | 400 TVL |
| Gray-Scale Discrimination | 7 grades |
| Minimum Illumination | 0.2 Lux |
| Electrical Video Output | (0.7±0.3) V |
| Optical Transmit Power | −15 dBm to 0 dBm |
| Optical Wavelength | 1310 nm |
Underground coal mine image monitoring, industrial television systems, high-risk environment safety monitoring, and long-distance video surveillance.
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The company is a provider of complete solutions for mine rail transportation dispatching systems and intelligent mine signal control and safety dispatching.
