Introduction

Linovision gateway is able to decode the data of LoRaWAN sensors and map the sensor data into BACnet objects used by BMS system or BACnet devices, which can quickly and easily integrate LoRaWAN devices to Building Management System.

Requirement

• Linovision Gateway: IOT-G65/G67 with firmware version 60.0.0.41 and later
• Any LoRaWAN sensor
• BACnet Client tool: take Yabe as example

Configuration

1. Go to Network Server > Payload Codec to check if there is decoder of your LoRaWAN node, if not please add and custom the decoder referring to article How to Use Payload Codec on Linovision Gateway.

2. Connect LoRaWAN node to Linovision gateway referring to article How to Connect LoRaWAN Nodes to Linovision Gateway. Note that ensure the correct payload codec is selected when adding this device.

   

3. Go to Network Server > Packets to check if there is uplink packet and click Details to check if the decoder works. If works, the JSON item will show the decoded result.

4. Select the Application you use and add a BACnet/IP transmission.

5. Go to Protocol Integration > BACnet Server > Server to enable BACnet server and configure the settings. Note that the Device ID should be changed to an unique value to avoid conflict with other BACnet server devices, or the BACnet client may not find this device.

6. Go to Protocol Integration > BACnet Server > BACnet Object page, click Add to add an object.

• Device Name: select the device added on Network Server > Device page
• LoRa Object: select or customize a sensor variable decoded on JSON item of Network Server > Packets page
• Object Name: customize an unique object name
• Object Type: select Analog Input or Binary Input for non-editable sensor data

Example 1: temperature data

• COV: when the change of analog type object value exceeds the COV Increment, the gateway will send notification to BACnet client actively. This should ensure the BACnet client supports COV feature.

Example 2: button status

• Active/Inactive Text: display the real status when button is pressed or unpressed
• Polarity: Define the binary status as Normal or Reverse.

Note: for LInovision buttons (IOT-S500BT and IOT-S500SP), it's suggested to add msgid value (update a random value if the press is triggered) to an object and know if the button is pressed by the change of this value.

7. After adding, you can check if object values are updated regularly.

8. Open Yabe BACnet client tool, click Add device to scan the devices, then you can find the BACnet server device according to the Device ID and check the object list.

9. Click the object to check all the properties of this object.

Construction sites are environments fraught with potential hazards and security issues, making the installation of a dependable and effective security camera system essential for ensuring the safety of the site and its workers. This article offers a comprehensive buying guide for construction site security cameras, designed to help you select the best device to meet your specific requirements.

Common Security Risks at Construction Sites

Construction sites face a variety of security risks and challenges that must be addressed to ensure the safety of both employees and property. Understanding these common risks is essential for implementing an effective security camera solution. Here are some of the major threats:

Unauthorized Access

Open and unfinished buildings often attract curious individuals unaware of the dangers present at a construction site. This poses a legal risk for the company if someone is injured. Employing security guards can help keep unauthorized people off the property, reducing the likelihood of accidents and preventing costly downtime from having to clean up after trespassers.

Worker Safety

The construction industry is inherently high-risk, with workers exposed to numerous hazards such as excessive noise, extreme temperatures, falls from heights, moving heavy equipment, and exposure to harmful substances like silica dust and asbestos. Workers must adhere to safety procedures for managing cables, materials, and tools to avoid creating unnecessary hazards. Comprehensive video surveillance across the site is essential to minimize these risks and ensure a safer working environment.

Robberies and Assaults on Employees

Criminals often target construction workers for their valuable tools and equipment. Ensuring that employees can leave the worksite safely at the end of the day is crucial. Encouraging workers to leave in groups and considering the employment of security guards to accompany them to their vehicles can help mitigate the risk of robberies and assaults.

Cybercrime

Construction companies handle sensitive data, including employee records and financial transactions, making them targets for cybercriminals. Protecting online data systems from breaches, such as phishing attacks and ransomware, is vital. Partnering with a security team experienced in cybersecurity can help implement robust measures to safeguard the company's digital assets.

Bad Weather

Weather risks in construction include the negative impacts that adverse weather can have on a project. Due to the increasingly unpredictable nature of extreme weather, it's crucial to consider weather risks to prevent significant costs and project delays. Hazardous conditions such as thunderstorms, heavy rains, strong winds, and extreme temperatures can disrupt construction activities. The outdoor nature of construction work makes it particularly vulnerable to natural disasters, highlighting the need for proactive weather risk management.

Benefits of Security Cameras for Construction Sites

Security cameras play a vital role in ensuring the safety and security of construction sites. They offer a range of advantages that enhance site security and management efficiency. Here are some key benefits of security cameras on construction sites:

Comprehensive Monitoring

Large construction sites often cover vast areas with multiple zones. Security cameras provide comprehensive monitoring, ensuring that all areas are under surveillance. This facilitates early detection of potential safety threats and abnormalities, contributing to a safer work environment.

Real-time Monitoring and Response

By connecting to a security monitoring center or using mobile surveillance devices, security cameras enable real-time monitoring and remote access. Site managers can view live video footage of the site at any time, allowing for immediate action when necessary. This capability is crucial for timely responses to emergencies and managing security incidents effectively.

Crime Prevention

The mere presence of security cameras acts as a deterrent to crime. Criminals are less likely to target a site that has round-the-clock surveillance. Visible security measures, such as cameras, reduce the risks of theft, vandalism, and other criminal activities, thereby protecting the site and its assets.

Evidence Collection and Investigation Support

Video recordings from security cameras serve as valuable evidence for investigating and resolving security incidents. In cases of theft, vandalism, or other criminal activities, site managers can review camera footage to determine the timing, location, and individuals involved. This supports legal enforcement and strengthens overall security management.

Employee Supervision and Safety Training

Security cameras can be used not only to monitor site safety but also for employee supervision and safety training. Recorded footage can be utilized to assess employee behavior and operational practices, identify potential safety hazards, and provide training and improvement opportunities. This helps enhance employees' safety awareness and adherence to safety protocols, fostering a safer and more efficient work environment.

Must-Have Features for Construction Site Security Cameras

When selecting security cameras for large construction sites, several key features are essential to ensure the system meets the site's specific security needs. Here are some crucial features to consider:

High Image Quality and Wide-Angle Lens

For large construction sites, cameras that provide high-resolution images and a wide field of view are essential. These features allow for capturing a broader area and monitoring different construction zones with clear details, ensuring no critical activity is missed.

Night Vision Capability

Security must be maintained around the clock, making excellent night vision capabilities a must. Cameras with superior night vision functionality ensure clear images in low-light conditions, providing continuous monitoring and security throughout the night.

Motion Detection and Alerts

Cameras equipped with motion detection can automatically detect activity and trigger alerts. This feature allows for timely notifications when individuals or objects enter the camera's surveillance range, enabling immediate action when necessary.

Waterproof and Durability

Construction sites are exposed to harsh environmental conditions. Cameras should be waterproof and durable to ensure proper functioning in various weather conditions and challenging on-site environments, providing reliable security coverage.

Remote Access and Real-Time Monitoring

Opt for camera systems that offer remote access, allowing site managers to view live video footage anytime, anywhere through the internet or mobile devices. This real-time monitoring capability enables quick responses to emergencies and security issues, enhancing overall site security.

Long-Term Storage and Backup

Large construction sites often require extended video storage for playback and investigations. Selecting camera systems with sufficient storage capacity and backup functionality ensures that critical footage is available when needed for review or evidence.

Ease of Installation

Construction sites are dynamic environments that often require changes to camera placements as the project progresses. Security cameras should be easy to install and reposition, allowing for flexibility and adaptability as the site develops. This ensures optimal coverage and security throughout the construction process.

Best Security Camera Types for Jobsite Security

4GIPC P8 Wireless 4K Dual-Lens 180° Panoramic Camera

For those seeking wireless construction site security cameras to monitor job site environments, the4GIPC P8 wireless security camera for construction site is the ideal solution. This network camera features a 4K progressive scan CMOS sensor and a 4 mm fixed focal lens，and with support for IEEE802.11b/g/n connectivity. It offers a wide field of view, allowing you to focus on even the most minute details and quickly respond to relevant events. The 4GIPC P8 security camera kit is also a portable jobsite camera kit that included Wall-mount bracket and pole-mount bracket ,4G LTE Cellular router (SIM card purchased separately) and DC12V power adapter. It can be installed at the front door or entrance of a job site to detect movement, misuse or attempted theft, even at night It also delivers clear video.

IPTZ544D-25X PTZ Camera

PTZ cameras are suitable for use in public areas in construction site scenarios and are ideal for protecting construction site safety. The IPTZ544D-25X camera is equipped with super HD 4MP resolution and varifocal 4.8-120mm lens, which can achieve 360° panoramic coverage without blind spots, the security camera can be installed on the ceiling to achieve a complete 360° panoramic monitoring of the entire room and powerful 25x optical zoom function allows you have broad field of view, but also focus with the finest detail, let you immediately pay attention to related events. 

IPC575-AFM Dome Camera 

The IPC575-AFM is a 5MP dome PoE security camera with 98ft smart infrared night vision that can generally be used in warehouse environments on construction sites. The IPC575-AFM security camera offers 120dB True WDR and IR illumination with a 2.8 to 12 mm varifocal lens. Designed for durability and resiliency, the camera has an IP66 dust and water resistance rating and IK10 vandal resistance. In addition, this construction site security camera has intelligent perimeter and super dynamic detection functions. It supports four deployment modes: cross-border detection, entering area, leaving area, and area intrusion. Able to minimize false alarms caused by environmental factors.

IPC206A Bullet Camera

The IPC206A bullet camera is a cost-effective camera ideal for monitoring entire construction sites. IPC206A construction site security camera with 6MP resolution, built-in microphone, fixed 2.8mm lens, 98ft night vision, IP66 weatherproof, making it ideal for protecting most construction sites. It supports four deployment modes: cross-border detection, entering area, leaving area, and area intrusion.  It can classify and detect and deploy motor vehicles, non-motor vehicles, and pedestrian targets.  This PoE IP camera uses a single cable to transmit data and power, eliminating the need for messy wiring. Even beginners can set it up in minutes.

IPC208C Bullet Camera

The IPC208C 4K bullet security camera features wide dynamic range, 100ft infrared night vision and an IP67 rating, making it ideal for installation at construction site entrances and exits and can operate in low-light environments or in the dark. With Digital WDR, the camera delivers high-quality images with clear details and accurate color reproduction, even in challenging lighting conditions. Pairing this security camera with a compatible HD NVR instantly enhances job site security, giving you a peace of mind monitoring experience. It also has perimeter protection and intelligent people flow statistics functions to monitor people flow and crowd density, enhancing the camera's crowd management application functions.

IPC3340 Turret Camera

The IPC3340 security camera is commonly used in office areas or reception areas on construction sites. This full HD 4MP turret camera uses a 4-megapixel progressive scan CMOS sensor and a motorized fixed 2.8mm lens that supports intelligent infrared fill light for more uniform nighttime images, night vision distance up to 30m (98ft), and true WDR technology for clear images in strong light scenes. At the same time, it also has an IP67 protection level to ensure longer service life.

Why Choose Linovision Construction Site Security Solution?

LINOVISION has an expert team dedicated to providing security systems specifically designed to meet the unique needs of construction sites. Our extensive experience in construction site security solutions enables us to offer proactive, intelligence-driven security cameras that help protect construction sites, ensure worker safety, and assist management in tracking progress and deliveries.

Comprehensive Security Solutions

Linovision offers a comprehensive range of security cameras, network equipment, and facial recognition terminals specifically designed for construction sites. Our products include:

• Security Cameras: Bullet cameras, dome cameras, turret cameras, and fisheye cameras to meet various security needs.
• Network Equipment: Enterprise switches, PoE+ switches, and NVRs to manage the construction site office environment and CCTV centers.
• Facial Recognition Terminals: All-in-one terminals for body temperature detection and face comparison at entrances and exits.

Our team will help you select the most suitable products based on the specific characteristics and requirements of your construction site.

Advanced Intelligent Analysis

Our security solutions utilize advanced intelligent analysis algorithms with identification and alert functions. These features allow for immediate detection and response to any abnormalities, such as break-ins, thefts, or emergencies like fires. Our systems can send alerts to notify relevant personnel, ensuring quick and effective action.

Efficient Management

Linovision’s VMS and mobile applications support remote monitoring, allowing you to view real-time images of the construction site from your mobile phone or computer. Features include:

• Multi-Channel Display: Monitor multiple sites on one screen.
• VCA Smart Search: Easily find footage by date, event type, and tags.

These capabilities facilitate efficient site management and ensure comprehensive security coverage.

Technical Support and After-Sales Service

Linovision is committed to providing excellent technical support and after-sales service. Our experienced technical team offers quick responses and solutions to any problems encountered during installation, configuration, or use. We strive to ensure that your construction site security system operates smoothly and effectively.

Summary

Investing in construction site security cameras is a wise decision. Linovision’s security cameras and video surveillance systems offer proactive threat detection, reducing the risk of theft and vandalism. Choosing the right security camera system is crucial for ensuring site safety. Our solutions provide real-time monitoring, extensive coverage, intelligent intrusion defense, and customized report analysis, helping you detect and respond to potential security threats promptly.

In the realm of security and surveillance, the ongoing discussion surrounding IP cameras versus analog cameras holds significant importance for both businesses and homeowners. The choice between an IP camera system and a traditional analog setup can have a profound impact on the effectiveness and scalability of your security measures. This article aims to explore the distinctions between these two prevalent camera types, empowering you to make an informed decision that aligns with your specific surveillance requirements.

Understanding IP Cameras and Analog Cameras

Internet Protocol (IP) cameras refer to all the digital video cameras that can send and receive data via an IP network. They are widely used as video surveillance cameras, and they come in varying designs and capabilities. Some IP cameras need the support of a network video recorder (NVR) for recording and video/alarm management. However, others operate without an NVR, meaning they can record directly to a remote or local storage media. To read more: Technical Guide to IP Cameras - Overview, Types, Applications.

IP cameras encompass all digital video cameras capable of transmitting and receiving data through an IP network. They are widely employed as video surveillance cameras, available in various designs and functionalities. Some IP cameras necessitate the support of a network video recorder (NVR) for recording and managing video and alarms. However, others can operate independently without an NVR, enabling direct recording to local or remote storage media. For further information, please refer to the "Technical Guide to IP Cameras - Overview, Types, Applications."

On the contrary, analog cameras capture images, convert them into analog signals, and transmit them over a coaxial cable to a digital video recorder (DVR). The DVR then converts the analog signals into digital format, compresses the files, and stores them on a hard drive. Below, you will find a comprehensive comparison between an IP camera and an analog camera.

Advantages of IP Cameras

IP cameras provide superior resolutions and scalability, making them ideal for environments that demand comprehensive surveillance coverage over large areas. The transition towards IP-based surveillance has been predominantly influenced by the following factors:

IP Cameras vs. Analog Cameras: Which is ideal for your business?

Deciding between IP cameras and analog cameras for your business depends on finding the right balance between quality, cost, and ease of use. IP cameras may be the preferred choice if you require high-resolution footage, scalability, and integration with cutting-edge technology. However, if budget constraints are a significant factor and your current infrastructure supports it, analog cameras offer reliability without the need for an extensive overhaul. Ultimately, aligning your selection with your operational needs and financial capacity will ensure a secure and efficient surveillance environment for your business.

Power over Ethernet (PoE) switches have gained significant popularity as a practical solution for businesses seeking to conveniently deliver power and data through a single connection. In this comprehensive guide, we will delve into the various types of PoE switches, highlight their advantages and applications, and provide insights on selecting the most suitable PoE switch to meet your specific requirements.

What is a PoE Switch?

A PoE switch combines the functionalities of a switch and a power source into a single device. Equipped with multiple Ethernet ports, these switches facilitate seamless connections with various devices such as VoIP phones, wireless access points, and IP cameras. By integrating power delivery capabilities, PoE switches eliminate the need for separate power cables, streamlining installations. These switches prove particularly beneficial in network deployments where power outlets are limited or in scenarios where devices are situated in challenging-to-access locations.

PoE switches leverage the power over Ethernet (PoE) technology, enabling the simultaneous transmission of data and electrical power through Ethernet cables. This innovative technology employs a combination of power sources and power injectors to deliver power to connected devices. Acting as intermediaries between the power source and the devices, power injectors handle the transmission of both data and power, ensuring efficient operation. Also Check- PoE switch

 

Types of PoE Switches

When selecting a PoE switch, it is vital to familiarize yourself with the various types available. There exist two primary categories of PoE network switches:

The Unmanaged PoE Switch

Designed for simplicity and ease of use, the unmanaged PoE switch offers a plug-and-play solution that suits smaller setups. It requires minimal configuration and is user-friendly. However, it lacks extensive customization options, management features, and advanced security capabilities. Consequently, it is best suited for applications with uncomplicated network requirements, such as home networks or small-scale environments comprising fewer than 5-10 computers.

The Managed PoE Switch

Engineered to deliver enhanced control and comprehensive network management, managed PoE switches excel in scenarios that demand advanced functionality. With their robust security features and extensive configuration options, they prove ideal for applications like enterprise networks, data centers, and large-scale surveillance systems. These switches offer features such as VLANs (Virtual Local Area Networks), QoS (Quality of Service), port mirroring, and heightened port security, catering to complex networking requirements.

Advantages of PoE Switches

Given how PoE switches work, the benefits of PoE switches are obvious.

Simplified Installation: PoE network switches are known for their user-friendly installation and configuration. With plug-and-play functionality, these switches eliminate the need for complex wiring or intricate setup procedures. Built-in features like port mirroring, VLANs, and QoS further simplify network management tasks, enhancing overall operational convenience.

Cost Efficiency: PoE switches exhibit remarkable energy efficiency. By intelligently delivering the precise power required for each connected device, they eliminate the need for oversized power supplies. This efficient power allocation not only reduces energy consumption but also contributes to long-term cost savings, making PoE switches a financially advantageous choice.

Enhanced Flexibility: The ability to power devices through PoE enables easy relocation to areas without available power outlets. This flexibility allows PoE switches to be conveniently placed in challenging-to-reach locations or areas distant from power sources. Security cameras, for instance, can be strategically installed in optimal positions, regardless of the availability of nearby power outlets.

Future-Proofing: With the rapid growth of the Internet of Things (IoT) industry, PoE switches provide future-ready infrastructure. By incorporating PoE switches into your network, you can seamlessly accommodate the increasing number of devices designed to leverage this technology. This scalability ensures long-term compatibility and positions your network for seamless integration with emerging IoT devices.

 

PoE Switch Applications

This rapid expansion of network-connected devices means that PoE technology and PoE switches will grow in importance to most networking infrastructures. While PoE switches have numerous applications, we mainly discuss the three most common application scenarios.

• VoIP Phones: VoIP phones are PoE devices, with PoE allowing for a single connection to the wall socket and the ability for remote powering down

• IP Cameras: Security cameras can be connected to PoE switches to enable fast deployment and simple repositioning.

• Wireless: Many wireless access points are PoE compatible. Thus, PoE switches allow for easy relocation and remote positioning.

• Smart Home Automation: LED lighting, heating and cooling systems, appliances, voice assistants, and electric car charging stations.

How to Select the Right PoE Switch

When selecting a PoE switch, it is important to consider your application requirements, the features and limitations of the PoE network switch. Of course, the power requirements of connected devices are also important. Some PoE network switches are designed to power devices that require up to 30 watts, and some are even designed for power devices that require up to 60 watts.

Features of PoE Switches to Consider

In addition to the type of switch and power requirements, there are a number of features to consider when selecting a PoE switch. These features include port speed, port count, port types, PoE budget, power savings, and port security.

• Port speed: Maximum speed a port can achieve. It is important to choose a switch with a port speed that can support the connected devices. The port count is the number of ports available on the switch. It is important to choose a switch with enough ports to accommodate all of the connected devices.

• Port type: Common port types include RJ45, SFP, and SFP+. It is important to choose a switch with the right port type for connected devices.

• PoE budget: Maximum amount of power that can be allocated to connected devices. It is important to choose a switch with a PoE budget that can accommodate all of the connected devices.

• Power savings: Designed to conserve energy by automatically turning off unused ports. This can help to reduce energy costs. 

• Port security: Designed to protect connected devices from unauthorized access.

Limitations of PoE Switches

Nonetheless, there are some limitations to PoE variation that you should be aware of:

• Restrictions on distance: Typically, PoE switches can transmit over Ethernet up to a distance of up to 100 meters. The 100-meter distance restriction presents a challenge for large campuses, restaurants, and businesses implementing PoE. However, there are still devices like power extenders and powered fiber cables that can be used to extend the PoE range.

• Power: If you require high power over poe networks, you must ensure that the power capacity of your PoE switches meets your requirements due to the power limitation imposed by PoE standards and Wattage.

 

FAQs about PoE Switch

Q: Non-PoE vs. PoE Switch: How do they differ?

A: Non-PoE switches cannot deliver power to connected devices, necessitating the use of midspan power sourcing equipment (PSE), such as a PoE injector. This setup adds power while transmitting data to powered devices (PDs). In contrast, PoE switches offer a simpler solution, directly delivering power and data to PDs with just a network cable and a power cable.

Also Check- PoE vs PoE+ vs PoE++ Switch: How to Choose?

 

Q: Do PoE Switches Require Special Cables?

A: No. The Ethernet cables that should be used for PoE network switches primarily depend on the data rate of the PoE port; for instance, Cat3 or better cables can be used for 10/100M; Cat5/Cat5e/Cat6 cables are required for 1000M. In the future, Cat6a or higher cables may be required for the installation of 2.5G/5G/10G PoE devices.

 

Q: Active vs Passive PoE Switch: Should I Choose Active or Passive PoE Switches?

A: Active PoE network switch complies with standard PoE. On the contrary, passive PoE network switch does not adhere to any IEEE standard. There are many ways that active and passive PoE switches differ from one another, like how the PoE power supply pinout looks and whether or not they support Ethernet.

 Also Check- Active vs. Passive PoE Switch: Which Should We Choose?

 

Q: Can the PoE Switch be used with a computer or other non-PoE devices? And will a PoE switch harm devices that do not use PoE?

A: Yes, a PoE switch can be used with non-PoE devices like computers. The switch automatically detects whether a connected device is PoE-compatible and will only supply power to PoE-enabled devices. So, it won't harm non-PoE devices; they just won't receive power through the switch.

 

Q: Is it possible to connect two PoE switches?

A: You could, yes. The PSE only supplies PD with power when it determines that the device can handle it. As PSEs, the two PoE switches will only be used for data communications.

 

Q: What is the maximum transmission distance of PoE? How to extend the transmission distance of PoE?

A: Whether using IEEE 802.3af (PoE) or 802.3at (PoE+), data and power transmission are limited to a distance of 100 meters over Ethernet cables in standard PoE. Media converters and PoE extenders, for example, can extend the range to up to 300 meters if you want to increase the maximum distance.

Conclusion

PoE switches are an effective solution for businesses looking to provide power and data over a single connection. They can simplify installation, reduce clutter, and improve energy efficiency. When selecting a PoE network switch, it is important to consider your application requirements, the power requirements of the connected devices, and the features of the switch. It is also important to consider the cost and long-term cost savings of using a PoE network switch.

If you are looking for a reliable and cost-effective PoE switch, check out Linovision PoE Switches.

以太网供电 (PoE) 是一种使电源设备 (PSE) 通过网络电缆同时向受电设备 (PD) 提供电力和数据的技术。PoE 网络为 PD 附近没有电源的安装带来了许多优势，例如灵活性、节省成本、可靠性。当谈到 PoE PSE 设备时， PoE 分离器 应该在列表中。这篇文章旨在帮助您了解什么是 PoE 分离器、PoE 分离器的工作原理、如何选择和使用它以及一些有关它的常见问题。

什么是 PoE 分离器

PoE 分离器是与 PoE 交换机 和 PoE 注入器。它们不是同时接收数据输入和电源输入并将其转换为单一输出，而是通过将电源从数据中分离出来并将其馈送到非 PoE 兼容设备可以使用的单独输入来供电。如图 1 所示，PoE 分离器的一侧有两根输出电缆：一根提供数据，另一根提供电源。一般来说，PoE 分离器通常用于有远程非 PoE 设备且附近没有交流电源插座的情况。

PoE 分离器如何工作

PoE分离器在网络中使用有两种情况：一种是需要通过PoE交换机和非PoE设备连接才能供电的网络；另一种是通过非PoE网络交换机或路由器连接PoE兼容或非PoE兼容的终端设备来发送数据的网络。

如下图所示，供电设备—PoE交换机通过 以太网电缆。在这种情况下，PoE 分离器的输入电缆可以直接与交换机连接。一条输出线提供数据，另一条提供电源。当分离器接收到统一的 PoE 信号时，它会将数据和电源分离到两条不同的线路上，然后传输到非 PoE 终端设备，例如 IP 摄像机和无线接入点。

如果恰巧有兼容和不兼容的 PoE 设备混用，PoE 分离器切勿直接与非 PoE 交换机连接，而应借助 PoE 注入器来供电。例如，下图中，PoE 分离器与 PoE 注入器连接，最终将电力和数据发送到摄像机。

如何安装 PoE 分配器

通常，当您想要供电的设备（例如 IP 摄像头、VoIP 电话、WiFi 无线电和 IP 门禁读卡器）不符合 PoE 标准时，需要使用 PoE 分离器。这里以使用 PoE 分离器在包括 PoE 交换机的网络中安装非 PoE IP 摄像头为例。

安装可在几分钟内轻松完成。安装前，准备好 PoE 分配器、PoE 网络交换机、IP 摄像头、UTP 电缆。本例中使用的 PoE 分配器是Linovision PoE 分配器电缆，带 DC 12V 输出。

步骤1：将FS PoE分离器的两根输出线连接到IP摄像机的接口，一根用于电源传输，另一根用于数据。

步骤2：将UTP线的一端连接到PoE分离器的输入接口，将UTP线的另一端连接到交换机的千兆RJ45端口。

完成所有这些后，数据和电力将传输至 IP 摄像机。

PoE 分离器购买指南

如果您在选择 PoE 分离器时遇到困难，这里有一个 PoE 分离器购买指南可以帮助您。

首先，您应该确保要购买的 PoE 分离器能够与网络中的受电设备很好地协同工作。通常，市场上的 PoE 分离器符合 IEEE 802.3af/802.3at 标准。如果总输出小于 15.4W，PoE 分离器可以由 802.3af PoE 输入供电，如果所需的总输出小于 30W，则它们可以由 802.3at 输入供电。受电设备的输入电压应符合这些规格，并且不超过 PoE 分离器的输出。此外，请确保 PoE 分离器与其他符合 802.3af/at PoE 标准的网络交换机或注入器的 PoE 标准兼容性。

PoE 分配器常见问题解答

PoE 分离器与注入器：有什么区别？

PoE 分离器和 PoE 注入器都是常用的供电设备，但它们的作用方向相反。PoE 注入器（通常也称为中跨）为来自非 PoE 交换机或“端跨”的数据添加电力。它通过网线为无线 AP 等 PoE 设备供电。PoE 分离器也为设备供电，但主要区别在于它将数据中的电力分离到设备可以使用的单独输入。有关更多信息，请参阅 PoE PSE 比较： PoE 交换机、PoE 注入器、PoE NVR、PoE 媒体转换器。

随着VoIP电话、IP摄像头、无线接入点的广泛应用， 以太网供电 (PoE) 近年来取得了长足进步。由于物联网应用和智能设备部署的不断增加以及旨在支持更多智能设备的新批准标准，PoE 网络预计未来将迅速扩展。在本文中，我们将介绍 PoE 的各个方面，例如 PoE wiki、PoE 标准、PoE 类型、PoE 类别和 PoE 应用。

什么是以太网供电 (PoE)？

PoE 是一种可通过单一标准传输数据和电力的网络技术 以太网电缆。它允许我们使用以下网络电缆 Cat5/Cat5e/Cat6/Cat6a 电缆 为无线接入点、IP 摄像头、VoIP 电话、PoE 照明和其他受电设备 (PD) 提供数据连接和电力。使用 PoE 技术，我们可以轻松地为室内或室外 PD 供电，而无需安装额外的电力基础设施或在每个端点部署电源插座。

PoE 网络的优势——为什么使用以太网供电？

除了上述好处之外，在网络中采用 PoE 还有几个更有吸引力的理由。

节省时间和成本： 通过在网络中使用 PoE，我们无需为终端 PD 部署电线和插座。这将有助于节省大量电力布线成本，尤其是在网络中有大量 PD 时。此外，无需为 PoE 网络聘请合格的电工，因此您还可以节省电气安装的时间和金钱。

灵活性： 由于以太网电缆比电线更容易部署，因此 PoE 网络允许我们在几乎任何地方安装 PD，而不是靠近电源插座。这为设置和重新定位终端设备提供了极大的灵活性。

可靠性： PoE 电源来自一个中央且通用兼容的电源，而不是一组分布式壁式适配器。它可由不间断电源 (UPS) 备份或控制以轻松禁用或重置设备。这样，即使供电设备 (PSE) 发生故障，PD 仍可正常运行。

以太网供电（PoE）的演进路径

电气电子工程师协会 (IEEE)、思科和 HDBaseT 联盟已发布多项标准来定义 PoE。这些标准包括 IEEE 802.3af、IEEE 802.3at、IEEE 802.3bt、思科 UPOE 和 HDBaseT 供电 (PoH)。

PoE 类型

由于分类标准不同，PoE可分为不同的类型，目前IEEE PoE标准将PoE类型分为4种：Type 1(IEEE 802.3af)、Type 2(IEEE 802.3at)、Type 3(IEEE 802.3bt)、Type 4(IEEE 802.3bt)，如下图所示。

PoE 与 PoE+ 与 PoE++ (UPoE) 与 PoH

PoE（IEEE 802.3af），也称为 PoE 类型 1，每个端口可提供高达 15.4 瓦的功率，用于 IP 电话和摄像头等设备。PoE+（IEEE 802.3at），PoE 类型 2，可提供高达 30 瓦的功率，为 PTZ 摄像头等设备供电。PoE++ 或 UPoE（IEEE 802.3bt），也称为 PoE 类型 3，每个端口可提供高达 60 瓦和 100 瓦的功率，PoE 类型 4，适用于高性能设备。HDBaseT 供电（PoH）可通过单根电缆为 AV 设备提供电源和数据传输。下图说明了不同 PoE 类型的常见应用，供您参考。

PoE 类别

以太网供电 (PoE) 等级定义了不同网络设备的标准化功率水平。这些等级确保供电设备 (PSE) 和受电设备 (PD) 之间的兼容性。

如上图所示，等级从 1 级到 8 级，分别对应 特定的 IEEE 标准，表明 PSE 的最大输出功率 和 PD 的最大功率输入。让我们深入了解每个类别的更多细节：

1 类 适用于 IP 电话、IP 语音 (VoIP) 设备和基本传感器等低功耗设备。

2 级 适用于需要稍高功率的设备，包括无线接入点、小型 IP 摄像机和 IP 对讲系统。

第 3 类 通常用于需要中等功率的设备，例如较大的 IP 摄像机、销售点系统和访问控制设备。

4 类 提供增强的电力传输能力，适用于诸如云台变焦 (PTZ) 摄像机、视频电话和瘦客户端等耗电设备。

第五类 引入了对四对以太网线的支持，可实现更高的功率传输。它专为对功率要求更高的设备而设计，包括高级 PTZ 摄像机、多通道无线接入点和小型 LED 照明系统。

第六类 提供比前几类产品更强的供电能力。它可以支持高功率云台变焦摄像机、多无线电无线接入点和小型 LCD 显示器等设备。

第七类 提供 IEEE 802.3bt 标准引入的更高功率能力。它适用于高性能接入点、大型显示器和需要大量功率的瘦客户端等设备。

第八类 代表当前 PoE 标准定义的最高功率等级。它专为高耗电设备而设计，例如视频会议系统、高级照明系统和数字标牌

值得注意的是，每个类别指定的功率水平代表最大允许值，而 PD 提供或消耗的实际功率可能因其特定功率要求和与 PSE 的协商而异。此外，了解 PoE 类别可让网络管理员确保其设备的功率要求与其 PoE 基础设施的功能相符，从而确保正常运行并避免潜在的电源问题。

被动式 PoE 与主动式 PoE

以太网供电还可以分为 被动式 PoE 和主动式 PoE 一般来说。主动式 PoE 是标准 PoE，指的是在 PSE 和 PD 设备之间协商适当电压的任何类型的 PoE。被动式 PoE 是一种非标准 PoE 技术。它也可以通过以太网线路供电，但无需协商过程。

如何向您的网络添加 PoE？

网络中提供的 PoE 通常来自三个不同的来源： PoE 交换机， PoE 供电器，以及 PoE 分离器。PoE 交换机是为 PD 供电的最简单方法。您只需从 PoE 运行以太网电缆 网络交换机 端口到终端 PoE 设备。网络中没有 PoE 交换机时，使用 PoE 注入器。它有一个外部电源，负责为来自不支持 PoE 的网络交换机的数据添加电源。PoE 分离器也提供电源，但它们通过将数据中的电源分离并将其馈送到非 PoE 兼容设备可以使用的单独输入来实现。它通常用于部署网络中没有附近交流电源插座的远程非 PoE 设备。

PoE 网络常见问题解答

问：以太网供电的电压是多少？

A： 以太网供电以 44v 至 57v 直流电压注入以太网电缆，通常使用 48v。这种相对较高的电压可实现电缆上的高效电力传输，同时电压仍足够低，可视为安全。

问：PoE 提供的数据速度是多少？

A： 通常，PoE 可通过 Cat5、Cat5e 和 Cat6 电缆以 10/100/1000Mbps 的速度传输数据。现在，得益于广泛使用的 IEEE 802.3bt PoE 标准和 PoE++ 技术，PoE 能够在 100m 的距离内提供 2.5 Gbps 至 5 Gbps 的速度，并且最近达到了 10 Gbps。

问：PoE 网络有什么限制吗？

A： 是的，PoE 网络确实存在一些令人讨厌的限制。首先，它的覆盖范围限制为 328 英尺（100 米），这限制了用户可以操作远程 IP 设备的可行位置。其次，单个 PSE（例如 PoE 交换机）通常连接到多个 PD。如果 PSE 发生故障，所有 PD 都将停止工作。因此，从可靠的供应商处购买合格的交换机非常重要。此外，您还可以考虑将 PSE 连接到不间断电源系统。

问：什么是 PoE 中跨和 PoE 端跨？

A： PoE 中跨通常是一种 PoE 注入器，用作非 PoE 交换机和终端 PoE 受电设备之间的中间设备。PoE 端跨通常称为 PoE 网络交换机，可直接连接 PD 并为其提供 PoE 电源和数据。PoE 端跨通过数据对供电，也称为 PoE 模式 A。PoE 中跨使用引脚 4-5 和 7-8 供电，也称为 PoE 模式 B。