This study was conducted to establish a new type of the archive management system of ancient and famous trees so as to solve the problems of errors and low efficiency in traditional archive management, while with more and more types and quantities of archive materials. RFID was used to realize the management of file storage, inspection, inventory and failure, for this technology could effectively reduce the manual operation, improve the operation efficiency and realize the automatic and intelligent management of files.

Besides, combined with various sensors, this technology could realize the dynamic real-time monitoring of the archives warehouse, and provide a good storage environment for the ancient and famous tree archives. The intelligent archives management system of ancient and famous trees in Ji’nan based on RFID technology was established by using RFID and Internet of Things technology, combined with information materials, such as the ancient and famous tree resource investigation, identification and protection, maintenance and rejuvenation, daily management, migration approval and so on.

Old and valuable trees are priceless treasures left to mankind by nature and predecessors, with important resource value, humanistic value, historical value, cultural relics value, ornamental value, ecological value and greening scientific research value Combining RFID technology and digital archives construction with scientific management of archives entities to realize a scientific, efficient and highly modernized management of archives construction of the new model has become possible. As an emerging identification technology, RFID technology is widely used in material

As an emerging identification technology, RFID technology is widely used in the fields of material tracking, production automation control, warehousing management, railroad vehicles and freight container identification, etc. [5]. With the increasing maturity of RFID technology, RFID application in archive management, has its reference and feasibility.

RFID-based ancient and valuable trees intelligent archive warehouse management system architecture is mainly divided into data collection, data transmission, data storage and business applications at four levels

Data collection layer is mainly the use of RFID technology, combined with desktop card issuer, file intelligent cabinet, printer, temperature and humidity sensors, water leakage sensors, after the external sensors and other equipment, real-time reading of old and valuable trees file tag information, realizing real-time supervision of the file; data transmission layer is the use of the system's internal network data transmission; data storage layer is the use of the project's servers and the government cloud storage of the mutual backup, to ensure that the archives Data storage layer is the server used in the project and the government cloud storage mutual backup, to ensure the security of the archive data; business application layer is through the cloud computing technology and software development technology, to realize the business application requirements of multi-user.

The RFID-based intelligent archive management system for old and valuable trees mainly consists of four modules: intelligent cabinet management, archive management, security management and dynamic environment monitoring.

Intelligent archive management can provide more convenient archive access experience. Through RFID tags, you can quickly find the required files and realize instant access through the intelligent storage system.

Making full use of RFID technology, it effectively reduces manual operation, improves operation efficiency, and realizes automation and intelligent management of archives; combining with various sensors, it realizes real-time monitoring of the dynamic environment of the archive storage room, and provides a good storage environment for the archives of old and valuable trees.

What is low-voltage metal-enclosed switchgear?

Definition of it

It is a three-phase power distribution product designed to safely, efficiently and reliably supply electric power at voltages up to 1,000 volts and current up to 6,000 amps.

Product introduction

Low voltage switchgear is suitable for power plants, petroleum, chemical, metallurgy, textile, high-rise buildings and other industries, as well as for power transmission, distribution and energy conversion. The product complies with the standard of low voltage switchgear. Low voltage switchgear belongs to the products listed in the catalogue of compulsory certification products for 3C certification.

Main model

1. GCS low-voltage draw out switch cabinet
2. GCS low voltage switchgear
3. GCK with drawable switch cabinet
4. GGD low voltage fixed switch cabinet
5. Assembled low-voltage switchgear
6. MNS low-voltage draw out switch cabinet
7. MS low voltage draw out switch cabinet
8. GCS low-voltage draw out switch cabinet
9. Mnsqh with drawable low voltage switchgear
10. GCS low voltage draw out switch cabinet GCK (L) low voltage switch cabinet

Basic parameters

1. Rated insulation voltage: 690V
2. Rated working voltage: 380V, 660V
3. Rated frequency: 50Hz
4. Rated working current:
Rated current of horizontal bus: 630-6300a
Rated current of vertical bus 630-1600a
5. Rated short-time withstand current
Rated peak withstand current (is) 30-80ka
Rated short-time withstand current (is) 30-80ka
6. Rated withstand peak current
Horizontal bus (main bus) 63-176ka
Vertical bus (branch bus) 63-176ka

Usage condition

1. The ambient air temperature shall not exceed + 40 ℃ and not be lower than - 5 ℃, and the average temperature within 24h shall not exceed + 35 ℃.
2. The air shall be clean. When the maximum temperature is + 40 ℃, the relative humidity shall not exceed 50%. When the temperature is lower, a larger relative humidity is allowed.
Drawer type low voltage switchgear
Drawer type low voltage switchgear
3. Pollution level: Level 3.
4. The elevation of the installation site shall not exceed 2000m.
5. Special use conditions shall be negotiated separately when ordering.

Performance characteristics
1. Reasonable design: carry out unit design according to the characteristics of various switches and combine the functional units;
2. General structure and flexible assembly: C-shaped profiles meet the requirements of various structural forms, i-protection grade and use surrounding conditions;
3. Standard module · it can be used to form protection, operation, conversion, control and other standard units, and the module structure can be arbitrarily selected;
4. Safety protection: adopt the isolation between regions and the mutual isolation between the incoming and outgoing lines of functional units to effectively strengthen the safety protection performance;
5. Technical parameters: the main technical parameters are at the international leading level.

WINSAFE NDI®HX3 Auto Tracking Live Steaming PTZ Camera release, it can be easy used on the training, education and church etc. live steaming situation, Which built-in auto-tracking function, don't need any third-party software or device, just turn on with one click on the WebUI, matching remote control or our control keyboard, and you can track the target accurately and smoothly without any outside interference. You can also switch the target accurately and smoothly without any outside interfrence. You can also switch the target talent, or set the target area, or change the target size. Easy setting, lower latency, better Image.

1080P Full HD 30X/20X, NDI®HX3, NDI®|HX3, 3G-SDI, HDMI and USB2.0 output image simultaneously as well. 3G-SDI and HDMI are for conventional video production workflow, and USB output can be used as a high-end webcam.

Welcome to ask more details and order sample for your testing. UHV-20X-IP-S(ATNDI)

Our Speaker Tracking PTZ Camera AMC-G200TH will be upgraded to AMC-G200TV2 Version.

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We used the Sigmaster chip instead of before Hisilicon chip. we will aslo add the Lecturer Tracking function in our AMC-G200THV2. The different model compare form as below:

AMC series USB3.0 PTZ Video Camera is equipped with a professional high quality 2 million pixel CMOS sensor and high-performance low-power SoC professional chip platform to continuously and stably output uncompressed 1080P high-definit.1/2.8" inch 2.14MP CMOS image sensor with resolution up to 1920 x 1080 at 60 frames per second, clearly displaying any image details, output smooth video without delay.

12X/20X Optical zoom and 16X digital zoom to easily meet the requirements of close up and panorama views in various meeting scenes. Ultra Wide Angle, suitable for most steaming scenes, wide viewing angle with quality lens with high precision PTZ to meet your streaming needs. 64 Presets, close-up or panorama views can be switched at any time to improve the efficiency of the meeting.

One-Button Setting, Convenient and Efficient, Simple Design, Small and Light with HDM, LAN & USB 3.0 Interface. Good Design with cost effective, it is good used on the video conference, telemedicine, broadcating and education, if you have any interest, please feel free to contact with us.

WINSAFE AMC-G309UV2 4K Video Soundbar external cascade release. All-in-one Design, support External Casecase, 4K UHD camera with camera, microphone and speaker integrated, adopts advanced intelligent algorithm, accurate auto framing, speaker tracking.

AMC-G309UV2 built-in high-sense mic array, pickup range up to 5 meters, supporting AGC, AEC, ANC, supporting 2 external cascade microphone to extend range up to 12M.

110 degree UHD Lens/Supoer Wide HFOV,4KP30 UHD Video giving superb image, it is good used on the middle meeting room, not need other more euqipment, connect easy and let meeting will be more quick,clear and convenient.

Fan PCBA controllers and design services play a crucial role in ensuring efficient functioning of fans in various electronic devices. In this blog post, we will compare and contrast different products and services related to fan PCBA controllers, aiming to provide consumers with a comprehensive understanding. Whether you are looking for a fan PCB controller, digital fan controller, fan controller board, or auto heat and cool electric fan assembly, this article will help you make an informed decision.

Fan PCBA Controller

A fan PCBA controller is a device that regulates the speed and performance of a fan. It provides enhanced control and monitoring features, allowing users to adjust fan speeds and optimize cooling efficiency. Fan PCBA controllers come in various designs, from simple analog controllers to advanced digital controllers. These controllers are suitable for customizing fan speed and ensuring temperature management in computers, gaming consoles, and other electronic equipment.

Fan PCBA Design Service

On the other hand, fan PCBA design services focus on the development of customized fan PCBAs. These services offer professional assistance not only in PCB layout and design but also in selecting the right components for fan control devices. By utilizing a fan PCBA design service, you can ensure a precise fit for your specific applications and optimize performance.

Digital Fan Controller

A digital fan controller is a type of fan PCBA controller that utilizes digital signal processing technology. This controller enables precise control and offers advanced features like temperature sensing and automatic fan speed adjustment. Digital fan controllers are known for their accuracy and performance stability, making them ideal for applications that require strict temperature control while ensuring minimal noise.

Fan Controller Board

A fan controller board is a circuit board that integrates fan PCBA controllers and other associated circuits. It serves as a centralized hub for controlling multiple fans simultaneously. Fan controller boards offer convenience and flexibility, allowing users to manage several fans with ease. They are commonly used in high-performance gaming PCs, servers, and cooling systems.

Auto Heat and Cool Electric Fan Assembly

An auto heat and cool electric fan assembly is a complete system that includes a fan, PCBA controller, and sensors. This assembly is designed to automatically adjust fan speed based on the surrounding temperature. These systems offer energy efficiency and optimal cooling performance by dynamically responding to temperature changes.

In conclusion, when it comes to fan PCBA controllers and design services, understanding your specific requirements is crucial. If you require precise control and advanced features, digital fan controllers or fan controller boards can be your best option. On the other hand, if customization and tailored design are your priorities, opting for a professional fan PCBA design service can ensure optimal performance. Regardless of your needs, exploring all available options and considering the desired functionality will help you select the perfect fan PCBA solution for your applications.

In the life, electronic products have become indispensable companions. However, facing the charging problems of various electronic devices every time we go out can be a real headache. At such times, an economical, foldable, compact, and convenient USB-C PD charger becomes particularly important. Today, we want to introduce to you just such a charger - the 65W GaN USB-C PD Charger.

 Economical and cost-effective

With its reasonable pricing and excellent performance, the 65W GaN USB-C PD Charger demonstrates a very high cost-performance ratio. For consumers, it offers a powerful USB-C charger without the need to spend a lot of money, providing stable charging support for various electronic devices.

 Foldable design, portable and lightweight

This charger features a unique foldable design, allowing it to be easily folded into a compact size when not in use, making it easy to carry in a backpack or pocket. This design not only facilitates portability but also significantly reduces space occupation, making it ideal for friends who are frequently on the go.

 High charging efficiency, meets various needs

The 65W GaN Charger supports fast charging PD3.0 technology, quickly replenishing a large amount of power to electronic devices in a short amount of time. Additionally, it features a USB-C universal charging interface, meeting the charging needs of different brands and models of electronic devices. Whether it's a phone, tablet, or laptop, you can experience efficient charging.

 Safe and reliable, trustworthy

While pursuing portability and efficiency, the 65W GaN USB Charger also prioritizes safety. It incorporates advanced charging technology and high-quality materials to ensure that devices are not damaged during the charging process. Furthermore, the charger includes multiple protection functions such as overcurrent, overvoltage, and over-temperature protection, ensuring safe usage for the user.

 Conclusion

With its economical pricing, foldable portability, efficient charging, and safety features, the 65W GaN USB Charger has become an indispensable charging device in modern life. For friends who are often on the go and need to charge their electronic devices at any time, this charger is undoubtedly an ideal choice. It not only keeps your electronic devices fully charged at all times but also adds convenience and peace of mind to your travels. Choose the 65W GaN USB Charger to make charging easier and more efficient!

When It Comes To Commercial Lighting, The Selection Of Led Downlights Plays a Crucial Role In Creating a Comfortable And Visually Appealing Environment. One Important Aspect To Consider Is The Unified Glare Rating (Ugr), Which Measures The Level Of Discomfort Caused By Glare. In This Article, We Will Explore What Ugr Means And How To Choose The Appropriate Ugr Level For Different Applications In Commercial Lighting.

What Is UGR?

UGR Stands For Unified Glare Rating, And It Is a Standardized Metric Used To Quantify The Discomfort Caused By Glare In Lighting Installations. The UGR Value Is Determined By Various Factors Including The Luminaire Design, The Light Source, The Reflective Surfaces, And The Viewer's Position.

Understanding UGR Levels:

UGR Values Range From 10 To 30, With Lower Values Indicating Less Glare And Higher Levels Of Visual Comfort. The Following Are The Commonly Accepted UGR Levels And Their Corresponding Visual Comfort:

1. UGR< 16: This Level Is Considered Ideal For Tasks That Require High Attention To Detail, Such As Reading Or Precision Work. Areas Such As Office Spaces, Conference Rooms, And Study Areas Benefit From Downlights With Ugr Values Below 16.

2. UGR 16-19: This Range Is Suitable For General Lighting Applications In Areas Such As Corridors, Lobbies, And Retail Spaces. It Offers a Good Balance Between Visual Comfort And Efficiency.

3. UGR > 19: Higher Ugr Levels Are Acceptable For Areas Where Visual Tasks Are Less Demanding, Such As Warehouses Or Storage Spaces, Where The Quality Of Lighting Is Not Critical.

Selecting The Suitable UGR Of Led Downlights:

To Choose The Appropriate Ugr Level For Led Downlights In Commercial Lighting Applications, Consider The Following:

1. Function And Purpose Of The Space: Identify The Primary Tasks And Activities That Will Take Place In The Area. Determine Whether It Requires High Visual Precision Or If It Is More Of a General Lighting Application.

2. Occupancy Density: Consider The Number Of People Occupying The Space. Higher Occupancy May Require Lower Ugr Values To Minimize Glare And Maintain Visual Comfort.

3. Luminaire Placement: Evaluate The Positioning And Arrangement Of The Downlights To Ensure Optimal Lighting Distribution. Aim For Even Light Spread Without Creating Hotspots Or Dark Areas.

4. Luminaire Design: Opt For Downlights With Well-Designed Optics That Minimize Direct Glare And Provide Uniform Light Distribution. Anti-Glare Accessories, Such As Louvers Or Diffusers, Can Also Help Manage Glare.

5. Dimming And Control: Incorporate Dimming Capabilities And Lighting Controls To Adjust The Intensity Based On The Specific Needs Of The Space. This Allows For Easy Customization And Further Reduction Of Glare.

Choosing The Right UGR Level For Led Downlights In Commercial Lighting Applications Is Crucial For Providing a Comfortable And Visually Appealing Environment. By Considering Factors Such As The Function Of The Space, Occupancy Density, Luminaire Placement, And Luminaire Design, You Can Select Downlights With Suitable UGR Values. Always Aim For An Optimal Balance Between Visual Comfort And Energy Efficiency To Ensure The Best Lighting Experience For Occupants.

Remember, Selecting High-Quality Led Downlights From Reputable Manufacturers, With Accurate UGR Ratings, Is Essential To Achieve The Desired Lighting Performance While Meeting The Specific Requirements Of Commercial Spaces.

Led Pendant Lights Have Become Increasingly Popular In The Lighting Industry Due To Their Versatility, Style, And Energy Efficiency. These Lights Not Only Provide Excellent Illumination But Also Add a Touch Of Elegance And Sophistication To Any Space. In This Article, We Will Delve Into The World Of Led Pendant Lights, Discussing Their Features, Popular Styles, And Considerations For Selecting The Perfect Pendant Lights For Different Applications.

1. Understanding Led Pendant Lights:

Led Pendant Lights Are Hanging Fixtures That Typically Consist Of a Suspended Rod Or Cord, a Decorative Shade, And An Led Light Source. These Lights Offer a Wide Range Of Styles, Shapes, And Sizes, Making Them Suitable For Various Indoor And Outdoor Lighting Applications.

2. Popular Styles Of Led Pendant Lights:

a. Contemporary Design: Sleek And Minimalist, Contemporary Led Pendant Lights Feature Clean Lines And Geometric Shapes. These Lights Are Perfect For Modern Office Spaces, Kitchen Islands, And Dining Areas.

b. Industrial Style: Inspired By Urban Lofts And Industrial Aesthetics, Led Pendant Lights In This Style Often Feature Exposed Bulbs, Metal Shades, And Rustic Finishes. They Add a Trendy And Edgy Look To Commercial Spaces, Restaurants, And Cafes.

c. Vintage And Retro: Led Pendant Lights With a Vintage Or Retro Design Evoke Nostalgia And Charm. These Lights Often Feature Ornate Details, Glass Or Metal Shades, And Warm Filament Led Bulbs. They Are Ideal For Creating a Cozy Ambiance In Restaurants, Hotels, And Residential Spaces.

d. Artistic And Decorative: Led Pendant Lights Designed As Works Of Art Blur The Line Between Lighting And Sculpture. These Lights Come In Unique Shapes, Colors, And Materials, Making Them a Focal Point In Art Galleries, Museums, And High-End Residential Interiors.

3. Key Considerations For Selecting Led Pendant Lights:

a. Function And Purpose: Consider The Specific Lighting Requirements Of The Space. Are You Looking For Ambient, Task, Or Accent Lighting? This Will Help Determine The Appropriate Brightness, Beam Angle, And Color Temperature.

b. Size And Scale: Ensure That The Size And Scale Of The Pendant Lights Complement The Surrounding Décor And Architectural Elements. Oversized Pendant Lights Make a Statement In Large Spaces, While Smaller Ones Work Well In Compact Areas.

c. Material And Finish: Choose High-Quality Materials And Finishes That Match The Desired Aesthetic. Consider Options Such As Metal, Glass, Fabric, Or Wood, And Select Finishes That Integrate Seamlessly With The Overall Design Theme.

d. Lighting Controls And Dimming: Opt For Led Pendant Lights That Are Compatible With Lighting Controls And Dimming Systems. This Allows For Flexibility In Adjusting The Light Output To Create Different Moods And Atmospheres.

e. Energy Efficiency And Durability: Look For Led Pendant Lights With High Energy Efficiency Ratings And Long Lifespans. Energy-Efficient Leds Not Only Save On Electricity Costs But Also Contribute To Sustainability Efforts.

Led Pendant Lights Offer a Wide Range Of Styles And Designs To Enhance The Aesthetics And Functionality Of Any Interior Or Exterior Space. With Their Energy Efficiency, Durability, And Versatility, These Lights Have Become a Preferred Lighting Solution For Various Applications. By Considering The Specific Lighting Needs, Design Preferences, And Quality Of Led Pendant Lights, Both Residential And Commercial Customers Can Select The Perfect Fixtures To Create An Inviting And Visually Appealing Environment.