Wire and cable play a crucial role in numerous industries across China, with product variety satisfaction rates and domestic market share exceeding 90%. With the nationwide rollout of initiatives such as "Safe City," "Intelligent Transportation," and "Smart City," there is growing attention and investment in security infrastructure. As a result, the demand for security-related cables is expanding rapidly, especially in key developed cities. Additionally, the central and western regions, along with second- and third-tier cities, also present vast market opportunities.
Security cables serve as a critical link between security devices, making them essential in modern surveillance systems. However, the emergence of analog high-line and HD-SDI cameras has significantly impacted the cable industry. These new technologies have introduced challenges, particularly concerning signal interference, which remains a persistent issue in the sector. For cable companies, overcoming this bottleneck is vital to maintaining competitiveness.
The question arises: How should cable companies that focus on the security market respond? This is a pressing issue, as both cable and security companies are increasingly aware of the need for collaboration. Many existing cable manufacturers, while having previously worked with security firms, do not fully align with the needs of the security market. Some specialize in cable TV or export, focusing more on sales volume than on addressing specific application requirements. This lack of integration often leads to miscommunication and inefficiency.
In reality, the close collaboration between cable companies and engineering application firms is becoming an inevitable trend in the evolving market. Security forums frequently discuss issues like image interference in coaxial cables, with users seeking solutions. Some suggest using twisted-pair cables for better anti-interference performance at lower costs, while others prefer traditional cables due to their reliability and affordability. However, these discussions often reflect one-sided perspectives without real cooperation.
In practice, various transmission methods—coaxial, twisted pair, fiber optic, and wireless—can all experience interference under certain conditions. The key is understanding how to resolve these issues rather than blaming the cable itself. Different transmission technologies should complement each other instead of competing. Cable companies must stay informed about advancements in transmission methods and work closely with innovators in the field.
For example, network video transmission in large-scale monitoring systems typically relies on multi-level network cables and switches. However, some companies have developed network coaxial cable technology that can transmit over 20 million HD video signals (along with audio, alarm, and control signals) from a single line node. Depending on the cable length, data rates vary: less than 400 meters at 92 Mbps, less than 1000 meters at 74 Mbps, and less than 2000 meters at 30 Mbps. This represents a significant advancement compared to older methods. If cable companies fail to adapt and remain focused on outdated products, they risk losing relevance in the market. Instead, they should proactively engage in developing cables suitable for high-speed, broadband, and advanced performance needs.
Collaboration between cable and security engineering companies is also essential in combating counterfeit cables. The issue of electromagnetic interference in wired video transmission is a shared concern. While cable quality plays a role, the main factors behind interference often lie in the transmission environment, construction quality, system design, and the earth's electromagnetic and magnetotelluric conditions. Cable companies should not place blame but instead work together to understand the root causes, accumulate knowledge, and support users effectively.
Optical cable systems are generally immune to interference, yet many complaints still arise in security forums. These issues often stem from poor system design, improper grounding, and environmental factors. Understanding the magnetotelluric environment and implementing proper safety designs are crucial to preventing equipment damage.
The rise of HD-SDI and other high-definition devices has introduced new challenges for cable companies. With security projects often requiring long-distance transmissions (1000 meters to several kilometers), it’s essential for cable companies to collaborate with application firms. A well-designed system integrates multiple transmission methods, emphasizing a holistic and integrated approach. Companies should not be limited by selling only their own products but should aim for long-term growth through joint development and innovation.
As digitalization, high-speed, broadband, and networking continue to shape the future, traditional cable technologies may no longer meet the demands of modern applications. This means higher standards and greater expectations for cable performance. To stay competitive, cable companies must continuously improve their professional expertise and actively engage with the security industry.
In conclusion, both cable and security companies must work together, learn from each other, and prioritize practicality and innovation. Only through such collaboration can they meet the evolving needs of the market and drive sustainable progress.
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