In the rapidly advancing field of LED lighting, choosing the right power solution is crucial. As a manufacturer specializing in lead-acid battery production, Kaiying Power has extensive experience and understands the unique advantages of lead-acid batteries in LED lighting applications. This article compares the advantages of lead-acid batteries and lithium batteries in this area to assist customers in making informed choices.

Advantages of Lead-Acid Batteries:

1. Cost-effectiveness: Lead-acid batteries offer an economical power solution for LED lighting systems.

2. Safety: Even when damaged, lead-acid batteries can continue to be used and are easy to repair, providing higher safety during use.

3. Technological Maturity: With over 150 years of history, lead-acid battery technology is widely recognized for its stability and reliability globally.

4. Recyclability: High recycling rates help reduce environmental pollution, demonstrating a commitment to sustainable development.

5. Ease of Maintenance: Simple maintenance procedures allow users to perform routine upkeep and troubleshoot easily.

6. Temperature Adaptability: They operate within a wide range of temperatures, ensuring stability of LED lighting systems in various environments.

7. High Current Discharge Capability: They provide powerful current output, suitable for LED lighting systems requiring instant high current.

8. Voltage Stability: Provides stable voltage, helping maintain consistent and uniform illumination for LED lights.

Advantages of Lithium Batteries:

While lithium batteries excel in many applications due to their high energy density, long cycle life, and low self-discharge rate, the advantages of lead-acid batteries may be more noticeable in specific application scenarios.

Choosing between lead-acid batteries and lithium batteries should be based on specific application needs, cost considerations, and environmental factors. As a professional lead-acid battery manufacturer, Kaiying Power is committed to providing customers with high-quality, reliable power solutions. By thoroughly understanding the characteristics of each battery technology, our customers can choose the most suitable power source for their LED lighting projects.

In today's rapidly evolving wireless communication landscape, Bluetooth technology shines with its low power consumption and ease of use in short-range wireless communication. As new applications such as smart home and Industry 4.0 emerge, these smart devices urgently cover long-range distance and get stable connectivity through BLE radios. To meet the needs of wireless communication over a wider range, BLE devices with a high transmit output power came into being.

What is the Maximum Transmit Power of BLE?

Various regulatory agencies limit the transmit power of BLE radio devices. Typically, in all standards, the maximum transmit power for 2.4 GHz band devices is around 100 mW (20 dBm).

Common BLE Applications with High Transmit Power

The max. transmit power of BLE radios available today usually ranges between 0 dBm to around 20 dBm, expanding transmission distances from 10 meters to hundreds of meters. Obviously, the BLE radio devices with high TX power draw a lot of attraction and are favored by the following applications:

• Smart Home: Seamless connectivity between rooms across large houses or villas for smart lighting, security systems, and temperature control, etc. By high-power Bluetooth radios, users can control and monitor these smart devices at a longer distance, improving living convenience and safety.
• Industrial Automation: In vast factories, where wireless communication between devices is crucial, high-power Bluetooth radios provide stable connections, and support large-scale monitoring and data transmission, thereby significantly boosting production efficiency.
• Medical Device: Remote medical monitoring equipment in hospitals or care facilities, benefits from effective long-range data transmission. For example, BLE blood pressure monitor and heart rate monitor, greatly increase efficiency of patient monitoring and care experience.
• Logistics Tracking: High-power Bluetooth devices also play important roles in logistics tracking and asset management. Efficient remote tracking and management of goods and assets in warehouses and transport vehicles can improve logistics efficiency and accuracy.
• Smart Agriculture: Environmental monitoring and automation in large fields or greenhouses, achieve precision farming.

While these applications prioritize transmission power and range, higher transmit power also leads to increased power consumption. Therefore, when selecting Bluetooth Low Energy modules for different applications, it's essential to consider factors such as transmission power, communication range, antenna, and power consumption.

High-Power BLE Modules

Most of BLE modules have a maximum TX power of 4 dBm or 8 dBm, but a few exceed this. As an example, RF-star’s CC2652P, CC2652P7 series modules can output +20 dBm, while EFR32BG24/MG24 modules can output +19.5 dBm.

TI CC2652P-Based Modules

RF-BM-2652P2 and RF-BM-2652P2I wireless modules are based on the Texas Instruments (TI) CC2652P SoCs with a built-in PA and maximum transmit power of +20 dBm. In addition, the modules also integrate a low-noise amplifier (LNA) to effectively improve the Bluetooth receiving sensitivity.

Importantly, the modules also support multiple protocols like Bluetooth 5.2 Low Energy, Thread, Zigbee®, IEEE802.15.4g, 6LoWPAN, and TI 15.4-Stack (2.4 GHz), running simultaneously through the dynamic multi-protocol manager (DMM). Thanks to these features, the wireless modules have been widely used in smart homes, gateways, and long-distance sensors.

Another good news is that RF-star has released a Bluetooth UART transparent transmission version for the modules. Rich AT commands allow customers to quickly shorten the product development lifetime, like:

• 22 adjustment levels of transmission power: -20 dBm ~ +20 dBm
• Supporting one-master and multi-slave connections, up to 8 devices can be connected at the same time
• Customizing extended broadcast packets up to 251 bytes
• Supporting a maximum stable UART forwarding rate of 35 KB/s
• Observer mode with filterable parameters
• Supporting Bluetooth pairing and bonding
• Automatic reconnection

TI CC2652P7-Based Modules

Advanced CC2652P7-based BLE modules (RF-BM-2652P4 and RF-BM-2652P4I) also offer +20 dBm transmit output power.

Aside from supporting the above-mentioned ZigBee and other 2.4 GHz wireless technology, they can run Matter protocol. More tellingly, the large memory of 152 kB RAM and 704 kB Flash of these CC2652P7 modules allows them to be embedded in more complex applications.

Silicon Labs EFR32BG24/MG24 Modules

RF-BM-BG24B1 and RF-BM-BG24B2 modules support BLE5.4, Bluetooth mesh, and proprietary protocols, while RF-BM-MG24B1 and RF-BM-MG24B2 modules also support Matter, Zigbee, OpenThread, and more.

The EFR32MG24 wireless modules with 1536 kB Flash and 256 kB RAM provide enough space for future application growth.

This series of BLE modules are all designed as PCB onboard antennas with a maximum TX power of +19.5 dBm. They are often used in smart home devices such as gateways/hubs, sensors, switches, door locks, smart plugs, LED lighting, lamps, and medical devices like blood glucose meters and pulse oximeters.

For detailed parameters, please refer to this table.

To sum up, these BLE modules not only feature high transmit power, but also advanced wireless technologies and flexible output options including PCB antenna, external IPEX connector and half-hole RF out interface. They are powerful wireless communication solutions for smart homes, industrial automation, and more.

For more information on high-power BLE modules, visit www.rfstariot.com or reach out at info@szrfstar.com.

Recently, Shenzhen Fortune Building completes its renovation with nearly 800㎡ high-brightness outdoor LED video wall. As located in the core area of Shenzhen's Futian CBD District, the digital video wall of the Building was born in 2014 with great commercial value intrinsically. With superior quality and service, 8 years later LianTronics was once again chosen as the supplier for the upgrade project of this skyscraper.

Adjacent to Shenzhen Convention & Exhibition Center, Fortune Building stands in the intersection of Jintian Road and Fuhua Third Road, heart of Futian CBD, in close proximity to the world-class top five-star hotels, luxury brand flagship stores, and the most premium office buildings. Early back in 2014, the nearly 800-square-metre LED display was acclaimed by the media for its superior geographical location and such large size with eye-popping display effect as soon as it was lit up.

With the fast growing of Shenzhen City, the OOH devices around the CBD have been upgraded one after another as the economic value of the location has increased. Hence, the renovation of the digital wall has been demanded in order to match the modernized surrounding environment and its worth.

To guarantee a wider broadcasting coverage, the new OOH LED wall has maintained the original three-sided structure. IP65 ultra-high weatherproof panels enable long-time running with super high stability. LianTronics patented anti-reflection masks effectively diffuse sunlight reflection and furthermore improve contrast ratio for sharper image presentation. Ultra-high brightness is friendly for advertising and public communication in day and night. 

Since establishment, LianTronics has always adhered to the original production of core components, such as high-precision cabinets, masks, back shells and cables, to improve the quality control from the very beginning of the manufacturing processes. LianTronics has also been tireless in terms of service, establishing world-service network and building up professional sales & engineer team to elevate the customer experience. Thanks to the best-in-class product quality and service, LianTronics has been the premier choice among plenty of strong competitors for many customers, which is proven in this project that LianTronics is chosen again to renovate the digital OOH wall for Shenzhen Fortune Building. 

With a focus on product and service improvement all the time, LianTronics will continuously explore, discover and cater to new market demands and values to ensure our customers get nothing but the best.

Shenhuo Seiko is a well-known optical fiber equipment manufacturer, offering a variety of models of welding machines, including large core diameter special optical fiber welding machines. Large core special fiber welding machine is usually used to weld large fiber diameter or special fiber material.

When choosing a suitable large-core special fiber welding, the following factors need to be considered:

Fiber diameter range: Different welding machines have different adaptability to the fiber diameter range. Make sure that the selected welding machine can meet the diameter requirements of the large core special fiber you use.

Welding quality and precision: Welding quality is a key indicator to ensure that the selected welding machine can provide high-quality welding results. Accurate alignment and a stable welding process are particularly important for special optical fibers.

Degree of automation: Modern welding machines usually have automatic functions, which can improve the efficiency and reliability of welding. According to the actual needs, select the welding machine with the appropriate degree of automation, such as automatic core alignment, automatic discharge and other functions.

Equipment portability: If you need to move the welding machine frequently for on-site construction or maintenance, you need to consider the portability of the welding machine. Light, easy to carry welding machine can improve your work efficiency.

Price and after-sales service: In addition to the performance of the equipment, you also need to consider price and after-sales service. Compare the price and after-sales support of different brands and models of welding machines, and choose the products with higher cost performance.

When choosing large-core special fiber welding, you can refer to the above factors, weigh and compare according to actual needs, and choose the welding machine that suits your application scenario and budget. In addition, it is also a good choice to understand the performance and characteristics of the product and refer to the evaluation and feedback of other users. Finally choose a welding machine with reliable quality, suitable function and budget.

RFID, short for radio-frequency identification, uses electromagnetic frequencies to communicate between RFID readers and RFID tags. RFID readers, transmit signals to read and write data on RFID tags. There are both active and passive tags. Active tags utilize batteries to boost their power output.

The physical tag read range is determined by the individual RFID reader and antenna power, the material and thickness of material the tag is coated or covered with, the type of antenna the tag uses, the material the tag is attached to and more!

While a specification may show a theoretical RFID tag read range of 5 meters (ideal conditions) it may be as little as 1 meter if the tag is attached to an object that is sitting on a metal surface surrounded by water and electromagnetic waves (not ideal conditions)!

Far-range UHF RFID tags can read at ranges as far as 12 meters with a passive RFID tag, whereas active tags can achieve ranges of 100 meters or more. The operating frequency of UHF RFID tags ranges from 300 MHz to 3 GHz, and UHF tags are the most vulnerable to interference.

It depends on the type of RFID system being used. A high-frequency (HF) reader based on the ISO 14443 air-interface protocol standard, designed for short-range transmission, has a maximum read range of about 18 inches. An active RFID system can read tags from 1,500 feet away or more, as the tags broadcast a signal and the systems are designed for longer-range applications.

Even within one type of RFID, however, there can be a wide array of read ranges. A passive ultrahigh-frequency (UHF) reader has a range of about 10 feet, while a model using a beam-steerable phased-array antenna can interrogate passive tags at a distance of 600 feet or more.

Keep in mind that the reader is only half of the story. A very small passive tag with a small antenna harvests less energy from and reflects less energy back to a reader. It, therefore, has a shorter read range than a tag with a much larger antenna.

It takes more than just sunlight to unleash the power of solar panels. An inverter is an important part of every solar panel system. Think of it this way: solar panels take energy from the sun. The inverter utilizes that energy to produce electricity that is compatible with your home.

More specifically, solar grid micro inverter convert the direct current (DC) generated by solar panels into alternating current (AC) that can be used by household appliances. These solar panel systems come in a variety of shapes and sizes, which helps improve the overall efficiency of the system.

While traditional string inverters connect multiple panels to a single inverter, microinverters operate at the individual panel level. They can optimize the conversion process to increase the efficiency of your solar panel system. Let's take a deeper look at microinverters, their technology, and how they compare to other inverters.

Solar grid tie micro inverter convert electricity from solar panels into usable electricity. Unlike centralized string inverters, which are usually responsible for the entire solar panel system, microinverters are installed at individual solar panel sites. Most solar panel systems with microinverters include a microinverter at each panel, but it is not uncommon for a single microinverter to be connected to a handful of panels.

Microinverters are categorized as Module Level Power Electronics (MLPE). Each microinverter operates independently of the other inverters in the system at the panel site. The independence of microinverters is very beneficial for complex installations or installations with shading. Due to its centralization, traditional string inverter technology operates at the lowest performing panel level. With microinverters, the solar panels have their own inverter, and even if one panel doesn't produce as much power as the others, it will continue to operate efficiently.

Microinverters are an excellent investment for most solar shoppers, especially if you have a complex roof or a roof with partial shading. Microinverters operate at the panel level and do not require a power optimizer to quickly shut down compliance and optimization. If a microinverter has a problem, only the panels connected to it will shut down, not the entire system. Microinverters typically diagnose and fix problems faster than central string inverters.

Microinverters are usually more expensive than string inverters. While better overall system performance may be obtained with microinverters, it is important to ensure that the long-term performance benefits outweigh the upfront costs. Microinverters are also located on the roof, which makes maintenance more difficult (and more costly if your warranty does not cover labor). Alternatively, string inverters are often more conveniently placed on the side of the house.

Many homeowners choose microinverters. They are the most popular choice on EnergySage. Part of the reason is their improved performance. Some installers also prefer them, which means they include them in their quotes more frequently.

Microinverters are a good choice if your roof has multiple flat surfaces facing different directions. They also make sense if your roof is shaded or angled differently throughout the day. Let's say you have some panels facing east and others facing south. In this case, the microinverters optimize performance by isolating production issues for each panel.

However, if you have a south-facing roof plane and no shading, we recommend that you discuss different options with our installers. In this case, microinverters may not be worth the extra cost.

How do microinverters compare to other types of solar inverters?

Contact Shenzhen Keyue New Energy Co. for more information.

Children's Day New Chapter: Tablet Devices Empower Smart Learning, Central Charging Stations Ensure Seamless Experience

With the rapid advancement of technology, the education sector has also witnessed a new wave of transformation. This Children's Day, a school in the city has brought an exciting gift to the students - tablet devices. This gift not only serves as a festive blessing for the children but also marks a profound change in their future learning methods.

In this digital era, tablet devices have become valuable tools for children's learning due to their portability, interactivity, and rich learning resources. To ensure students make the best use of these devices, the school has introduced a centralized charging station management system called "innovatecharger." This innovative initiative not only addresses the charging issues of the tablet devices but also ensures their safety and convenient management.

"innovatecharger" is a tablet charging management app designed specifically for schools. Through this app, teachers or administrators can easily monitor the charging status of each tablet to ensure they are always fully charged. Additionally, the system features intelligent recognition capabilities to automatically identify the model and charging requirements of each tablet for targeted charging management.

At the school's centralized USB-C charging station, students can place their tablet devices in designated charging slots, plug in the charging cable, and begin charging directly. Once the tablets are fully charged, the system automatically disconnects the power to prevent overcharging and device damage.

Moreover, the "innovatecharger" app also offers rich data statistics and analysis functions. Teachers or administrators can analyze charging records, usage duration, and other data to understand students' learning habits and device usage, enabling targeted teaching and management. Users can also utilize the app to set charging times, avoiding peak charging periods to achieve energy conservation goals.

This Children's Day, the school's innovative initiative has received widespread praise from students and parents. They have expressed that learning through tablet devices not only enhances their interest and efficiency in learning but also introduces them to the convenience and joy brought by technology. The introduction of centralized charging stations has alleviated their concerns during device usage, allowing them to enjoy learning with peace of mind.

In conclusion, this Children's Day holds special significance for the children at this school. They have not only received coveted gifts - tablet devices but have also experienced the new changes brought about by smart learning. Behind all of this progress lies the support of the "innovatecharger" centralized charging station management system. Let us look forward to the future where more schools can introduce such innovative initiatives to provide stronger support for children's learning and growth.

 

In fiber communication, optical pulses extend due to dispersion and tend to overlap with adjacent pulse periods. This causes interference between adjacent bits and leads to a high BER.At a high bit rate equal to the pulse width, the bit error rate (due to dispersion) will become too large.The dispersion compensation module (DCM) (also known as the dispersion compensation unit, DCU) contains the optical fiber roller with the dispersion negative slope,with the slope compensation function, it can compensate the wide band dispersion and dispersion slope of the standard single-mode optical fiber (G.652) in the C band, so as to optimize the residual dispersion of the system.It is based on a mature and reliable optical fiber process, which can improve the performance of the optical transmission system. The dispersion range at 1550nm wavelength can reach from-10 to-2100ps/nm, and can provide the central wavelength and dispersion of products with special requirements.

Dispersion compensation module (DCM) is mainly used for DWDM network, also can be said to be mainly used for long-distance network.DCM is deployed everywhere in the network, and modules can easily plug into fiber links because it has fiber connectors for input and output.Insertion loss can be compensated with a fiber optic amplifier. We also often see that the dispersion compensation modules tend to be placed between two fiber amplifiers.

The main component of DCM is DCF, and the dispersion compensation fiber (DCF) is a large negative dispersion fiber.It is a new type of single mode optical fiber designed for the 1.3μm standard single mode optical fiber.In order to adopt WDM/EDFA technology, the working wavelength of the optical fiber must be changed from 1.3μm to 1.55μm, and the dispersion of the standard optical fiber at 1.55μm wavelength is not zero, but positive (17-20) ps/(nm·km), and has positive dispersion slope, which must be added to make dispersion compensation to ensure that the total dispersion of the whole optical fiber line is almost zero, so as to realize high speed, large capacity and long distance communication.

The customer uses the 10G SM 1550nm ZR 80KM optical module, because the actual optical cable distance reaches 120KM, resulting in the optical module can not work normally. In this case, there are two solutions,as follows:

1) In the middle position of the line, increase the OEO, regenerate the optical signal, to achieve the rebirth and recovery of the optical signal, but the disadvantage is that the middle node needs power supply, in fact, it is difficult to find the appropriate position.

2) FiberWDM provide high performance, high reliability EDFA amplifier, can directly amplify the signal at both ends of the room, with FiberWDM passive DCM optical signal compensation, can perfectly solve the user's long distance 120KM transmission needs. This scheme has low cost, no need to find intermediate nodes, and save cost. The application diagram is as follows:

FiberWDM’s DCM module provides a high level of compensation while maintaining lower planar insertion losses and lower latency. When working with the EDFA of FiberWDM, DCM provides a simple, reliable and cost-effective long-distance transportation solution that enables the signal without regeneration.

Welcome back, dear readers !

In our previous article, we unveiled an extraordinary timepiece designed exclusively for Muslim people - the AZAN Watch.

Today, we delve deeper into the functional marvels of  prayer watches that seamlessly blend devotion and technology. Brace yourselves for an enlightening journey into the world of prayer and time !

a. Prayer Time Calculation: Azan watches incorporate sophisticated algorithms to accurately calculate and display the five daily prayer times, taking into account the geographical coordinates of the wearer's location.

b. Azan Alerts: The most distinguishing feature of an Azan watch is the ability to recite the Azan at each prayer time. These watches utilize built-in speakers and pre-programmed audio recordings of various renowned muezzins to deliver the call to prayer. The melodious tones create a serene and spiritually uplifting environment.

c. Qibla Direction: Many Azan watches incorporate a digital compass or a Qibla indicator, enabling the wearer to easily determine the direction of the Kaaba in Mecca, which is the focal point for Muslims during prayer.

d. Prayer Reminders: In addition to the Azan alerts, Azan watches often include customizable alarms to remind the wearer of upcoming prayer times or other significant Islamic events.

e. Other Features: Azan watches may include standard watch functions such as date display, stopwatch, backlight, and multiple time zone settings to accommodate travelers.

In a world where time often engulfs us in a relentless race, Azan watches offer a harmonious balance, guiding us to pause, reflect, and find solace in our faith. This treasured fusion of tradition and technology serves as a testament to the remarkable human capacity to innovate while cherishing the essence of our cultural and religious heritage.

NFC technology has revolutionized the way we interact with objects and devices, offering seamless connectivity and convenient data transfer. While NFC tags have been widely used in various applications, the introduction of NFC on-metal tags has opened up new possibilities for utilizing NFC technology with metal objects.

Enhancing Asset Tracking and Management

One of the key applications of NFC on-metal tags is in asset tracking and management for metal objects. Industries such as manufacturing, construction, and logistics can benefit from the ability to tag and monitor metal assets with precision. By attaching NFC on-metal tags to equipment, tools, and machinery, organizations can streamline inventory control, track asset movement, and optimize maintenance processs

Improving Maintenance and Inspection

NFC on-metal tags enable quick and efficient maintenance and inspection of metal objects. Maintenance technicians can easily scan the NFC tags on metal assets using NFC-enabled devices, access maintenance records, update service logs, and perform inspections with ease. This streamlined process helps ensure that metal objects are properly maintained, reducing downtime and improving operational efficiency.

Securing Access Control and Identification

NFC on-metal tags provide a secure solution for access control and identification of metal objects in restricted areas. By embedding NFC tags in metal surfaces or using specialized on-metal tags, organizations can implement secure access systems for facilities, equipment, and inventory. Employees can tap their NFC-enabled devices on the tags to gain authorized access, enhancing security measures in industrial environments.

Enabling Contactless Payments and Authentication

In addition to asset tracking and security applications, NFC on-metal tags can facilitate contactless payments and authentication for metal objects. Integrating NFC technology into metal products, such as smart devices or wearables, allows users to make secure transactions, access digital content, or authenticate their identity with a simple tap. This seamless interaction enhances user experience and offers convenience in various scenarios.

The versatility and reliability of NFC on-metal tags have expanded the scope of NFC technology, enabling innovative applications for metal objects across industries. Whether it's enhancing asset tracking, improving maintenance processes, securing access control, or enabling contactless interactions, NFC on-metal tags offer a robust solution for leveraging NFC technology with metal assets. As organizations continue to adopt NFC technology for metal object applications, the potential for enhancing efficiency, security, and user experience remains promising in the evolving landscape of IoT and connected devices.