Sa konteksto sa pag-integrate sa malampuson ug pagsabot, ang mga protective spaces, isip core carriers sa mga critical communication systems, ang ilang estabilidad ug kalambatingan nagdirekta nga impluwensya sa reliability sa transmision sa impormasyon ug operational efficiency sa infrastructure. Busa, ang pag-analisa sa core difficulties (environmental adaptability matching, electromagnetic compatibility design, construction precision control) sa installation sa communication cable sa protective spaces may importansya kaayo sa engineering.
1 Kadaghanan sa Protective Space Communication Cable Installation
1.1 Issues sa Cable Selection Matching
Ang mga structure sama sa braided/foil-wound shielding sa electromagnetic shielding cables, kon mismatched sa transmission frequency, mag-cause og characteristic impedance deviations, na makaapekto sa signal stability/accuracy. Ang weather-resistant materials (fluoroplastic insulation, metal armoring) nakaabot sa harsh environment needs apan ang ilang high hardness/rigidity mag-contradict sa construction flexibility, nga nag-put sa risco ang insulation damage/armor breakage sa panahon sa bending/stretching, nga nag-threaten sa quality sa installation.
1.2 Conflicts sa Routing & Anti-interference Design
Kon sa space constraints, kon strong-current ug weak-current lines gilay in parallel labi na close, ang alternating electromagnetic fields gikan sa strong-current circuits mag-interfere sa weak-current signals pinaagi sa coupling, nga mag-cause og distortion/attenuation. Ang poorly isolated cross-layout sa complex spaces mag-boost sa electromagnetic coupling tali sa wire pairs, nga mag-lead sa crosstalk issues. Ang improper shielding grounding (nga dili mog-follow sa single-point/equipotential connection) mag-cause og ground loop currents gikan sa potential differences, nga mag-worsen sa interference ug threatening sa communication system stability.
1.3 Challenges sa Construction Precision
Ang improper shielded cable termination mag-damage sa shielding layers o mag-cause og insecure grounding, nga mag-increase sa grounding resistance, damaging sa shielding integrity, ug allowing external interference/internal signal leakage, nga mag-reduce sa shielding efficiency. Ang inadequate fireproof sealing (gaps gikan sa poorly filled fireproof mud) wala mog-block sa flames/smoke. Ang defective moisture-proof sealing (bubbles/uneven adhesive) mag-let sa moisture seep in, nga mag-cause sa long-term insulation aging/conductor corrosion, nga nag-endanger sa communication system reliability/safety.
2 Quality Control Points para sa Protective Space Communication Cable Installation
2.1 Cable Selection & Material Inspection
Ang cable selection dapat molinya sa protective space needs: Para sa electromagnetic shielding, gamiton ang braided copper mesh cables (braiding density ≥ 90%) o double-shielded (foil-wound + braided) structures aron masiguro ang high-frequency anti-interference. Para sa harsh environments (high temp, humidity), gamiton ang polyimide insulated cables (temp resistance ≥ 200 °C) o IP68-rated sealed oil-filled cables. Material inspection: Ang copper conductors kinahanglan mobati sa purity (≥ 99.99%), elongation (20% - 24%), ug cross-section deviation (± 0.5%) standards. Ang shielding layers gi-test sa coverage, elongation at break (≥ 300%), ug shielding resistance (≤ 0.5 Ω/m sa 100 kHz) aron masiguro ang basic performance.
2.2 Routing Planning & Laying
Ang routing molooy sa partition isolation/anti-interference principles: Ang strong-current, weak-current, ug signal power cables gilay sa separate trays (spacing ≥ 500 mm). Ang metal partitions sa intersections mag-block sa coupling. Ang sensitive signal cables gamiton ang independent shielding pipes, avoiding parallel laying sa power cables sa > 10 m aron mapugos ang high-frequency interference. Sa panahon sa laying, ang traction tension controlled within 80% sa cable allowable tension aron i-prevent ang insulation damage.
2.3 Connection & Termination Quality Control
Ang shielded termination gamiton ang 360° full-circumference crimping, keeping contact resistance with connector shells ≤ 0.05 Ω, ug passing 30 MHz - 1 GHz shielding attenuation tests (attenuation ≥ 60 dB) aron masiguro ang shielding integrity. Para sa welding, gamiton ang 3% - 5% silver-containing tin alloy solder, control temperature sa 260 °C ± 10 °C, ug cool for ≥ 30 s aron masiguro ang sound solder joints. Ang grounding gamiton ang single-end grounding sa signal source, keeping resistance < 1 Ω aron i-avoid ang ground loops.
2.4 Implementation sa Protective Measures
Para sa electromagnetic shielding, seal wall-penetrating holes gamiton ang beryllium copper reeds + shielding flanges aron matugyan ang wall shielding efficiency ug block leakage. Encapsulate cable joints sa metal shielding boxes, connecting boxes to cable shields via welding/crimping, ug fill gaps gamiton ang conductive adhesive (conductivity ≥ 10⁴ S/m) aron ma-proper ang shielding.
Sa environmental protection: Ang fireproof sealing combine fire-resistant bags ug mud (thickness ≥ 200 mm, meeting UL 1479). Ang moisture-proof sealing gamiton ang three-layer waterproof tape (butyl rubber, PVC, self-vulcanizing rubber) sa joints, passing 24-hour immersion tests (insulation resistance drop ≤ 10%). Kon crossing vibration areas, install metal hoses (10 Hz - 2000 Hz, amplitude ≤ 0.5 mm) sa ≤ 500 mm spacing aron mechanical protection against vibration-induced damage.
3 Conclusion
Pinaagi sa pag-analisa sa core difficulties (electromagnetic shielding failure, poor environmental adaptability, construction precision issues) ug discussion sa quality control points, mahimo mong siguraduhon ang quality sa protective space communication cable installation. Ang future research makapusa sa intelligent monitoring (IoT-based real-time cable status evaluation, digital twin simulation platforms) aron predict quality risks proactively, enhancing communication system safety/stability sa protective spaces.