For safe and precise positioning of mining overhead cranes, linear displacement sensors must deliver stable feedback under dust, vibration, moisture, and heavy load. Typical technical parameters start with a measuring range of 0–15 m, resolution of 0.1 mm, and accuracy of ±0.05% FS. Repeatability should be ≤0.1 mm, with linearity ≤0.05% FS and a response speed up to 10 m/s. Common outputs include 4–20 mA, 0–10 V, SSI, and Modbus RTU, powered by 24 VDC with reverse-polarity protection. The sensor housing should be stainless steel or reinforced aluminum rated IP67/IP68, and the draw wire should use stainless steel or high-strength cable. For underground mining, flameproof or intrinsically safe versions such as Ex d I Mb or Ex ia I Ma may be required. Operating temperature should cover -20°C to +70°C, with vibration resistance of 10 g and shock resistance of 50 g. EMC protection, short-circuit protection, and surge protection are essential for crane control cabinets. Rugged cable exit, strain relief, and EMI shielding improve durability; zero/span adjustment and diagnostic output simplify maintenance. Installation must maintain cable alignment, avoid side load, and allow easy calibration. Output linearity, long-term drift (≤0.1% FS/year), and MTBF should be verified. The device should be calibrated after installation and checked during periodic crane inspections. These parameters ensure reliable hoist and trolley positioning, anti-sway control, and safe limit monitoring in demanding mining overhead crane applications.