1. Scalability. It is essential to implement a distributed architecture and modular design to support future expansion in terms of system size, functionality, and software upgrades. This allows the system to be easily customized or extended based on specific user needs, ensuring flexibility and adaptability as requirements evolve over time.
2. Ease of System Upgrade and Maintenance. Given the large scale of the system, both the software and core hardware should include automated upgrade and maintenance capabilities. The urban monitoring and alarm networking system consists of multiple complex subsystems, such as networks, storage units, operating systems, platform software, and various front-end devices. Each component must maintain detailed logs, including system modules and critical configurations, to facilitate efficient troubleshooting and management.
3. Management Function and User-Friendly Operation. Due to the complexity and scale of the networked system, the management platform should have a robust architecture that clearly separates core system management from business operations. This ensures that diverse application needs are met effectively. With numerous servers involved—such as management, storage, and data forwarding—the system's network management capabilities must be strong enough to handle routine maintenance efficiently. The user interface should be intuitive, easy to navigate, and designed for simplicity, flexibility, and quick learning, making it accessible to both administrators and end users.
4. Reliability and Stability. The system should rely on mature technologies and reliable hardware, with backup or redundancy measures in place for critical components. The software must support maintenance, offer strong fault tolerance, and ensure rapid recovery in case of failures. This guarantees long-term stable operation and minimizes downtime, allowing the system to be quickly restored after any issues occur.
5. Compatibility and Standardization. Ensuring compatibility is crucial for connecting devices from various vendors and supporting different protocols. The system should enable efficient communication and data sharing, aiming for maximum interoperability between devices and platforms. A higher degree of standardization and openness increases the system’s lifespan. All control, transmission, interface protocols, video/audio codecs, and file formats must comply with relevant national or industry standards.
6. Security Level. System security involves protecting against unauthorized access by users and devices. This includes implementing multi-level authentication for different user roles, such as administrators and regular users, while also preventing unauthorized devices from joining the network. Networked surveillance systems are particularly vulnerable to cyber threats, so strong security measures must be in place to prevent hacking, attacks, and malware infections. Additionally, protection against environmental risks like lightning, power surges, electromagnetic interference, and physical damage is essential to ensure comprehensive security.
7. Support for Secondary Development. In a city's surveillance and alarm network, there may be hundreds or even tens of thousands of cameras. Therefore, the system must be designed with scalability and sustainability in mind. To achieve the goal of "creating value through video," the system should support secondary development, enabling full utilization of video resources and facilitating future enhancements and integrations.
8. Advanced and Compatible. The construction of an urban video surveillance and alarm system is unlikely to completely replace existing analog systems. Instead, it should integrate the original analog infrastructure as much as possible within a fully digital framework. Ideally, the system should seamlessly connect the old and new systems, forming a complete and unified urban video monitoring network.
9. Practicality. The system should consider local environmental conditions, monitoring targets, methods, maintenance requirements, and budget constraints. It must meet the operational needs of the urban video surveillance and alarm system while supporting public safety management effectively.
10. Performance-to-Price Ratio. Designers should carefully define system functions, configure the system appropriately, and select suitable equipment. While ensuring high-quality key components, the overall cost should be kept reasonable to provide excellent value for money. Front-end camera resolution and back-end software capabilities are particularly important. Cameras with less than 460 lines may not provide clear images, limiting the effectiveness of the entire system. Features like wide dynamic range are also necessary in certain applications to enhance performance under varying lighting conditions.
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