Monthly Archives: September 2024

　　If you¨re passionate about coffee and are looking to elevate your brewing game, investing in a 2 kg coffee roaster can be a game-changer. Whether you’re a home enthusiast or a small caf└ owner, the right coffee roaster machine can make a significant difference in the quality of your coffee. In this article, we¨ll explore why a 2 kg coffee roaster is the perfect choice and how it compares to other options such as the Yoshan coffee roaster, coffee roasting machine, and commercial coffee roaster.However, in other words, we should know more about it. coffee roasting machines The law of development has brought new vitality to the whole industry and revitalized the market. https://www.yoshanroaster.com/

　　1. Ideal Size for Precision and Control

　　A 2 kg coffee roaster strikes the perfect balance between size and functionality. It¨s compact enough to fit comfortably in a home kitchen or small caf└, yet large enough to handle a significant batch of coffee beans. This size allows for precise control over the roasting process, enabling you to achieve the perfect roast every time. Unlike larger commercial coffee roasters that may be overly complex or oversized for small-scale operations, a 2 kg model offers a manageable size with advanced features.

　　Why a 2 kg Coffee Roaster is Your Best Brew Buddy

　　2. Enhanced Flavor Development

　　The Yoshan coffee roaster, known for its robust build and efficient design, is a great example of how a well-crafted coffee roaster machine can enhance flavor development. A 2 kg coffee roaster like the Yoshan model ensures even heat distribution, which is crucial for developing the complex flavors in coffee. This level of precision allows you to experiment with different roast profiles and discover unique flavor notes that may be lost in less precise machines.

　　Why a 2 kg Coffee Roaster is Your Best Brew Buddy

　　3. Perfect for Small-Scale Commercial Use

　　For small coffee shops or boutique caf└s, a 2 kg coffee roasting machine provides an excellent solution. It offers the capacity to roast enough beans to meet daily demand without the bulk and expense of larger commercial coffee roasters. This size is particularly beneficial for businesses that want to offer freshly roasted coffee without the logistical challenges of operating a high-capacity roaster.

　　Why a 2 kg Coffee Roaster is Your Best Brew Buddy

　　4. Cost-Effective and Space-Saving

　　One of the key advantages of a 2 kg coffee roaster is its cost-effectiveness. Compared to larger commercial coffee roasters, a 2 kg model is more affordable and requires less space. This makes it an ideal choice for those who want to start roasting coffee at home or on a smaller scale without a significant upfront investment. Additionally, its compact design means it can be easily accommodated in smaller spaces.

　　Why a 2 kg Coffee Roaster is Your Best Brew Buddy

　　5. User-Friendly and Versatile

　　A 2 kg coffee roaster is often designed with user-friendly features that make it accessible for both beginners and experienced roasters. Many models, including those from Yoshan, come equipped with intuitive controls, programmable settings, and built-in cooling mechanisms. This versatility allows you to customize your roasting process according to your preferences and achieve consistent results with minimal effort.

　　Why a 2 kg Coffee Roaster is Your Best Brew Buddy

　　6. Consistent Quality and Freshness

　　One of the primary benefits of using a 2 kg coffee roasting machine is the ability to ensure consistent quality and freshness. By roasting in smaller batches, you have greater control over the roast level and can more easily monitor the beans’ development. This ensures that each batch of coffee meets your quality standards and provides a fresh, flavorful experience for your customers.

　　A 2 kg coffee roaster offers a perfect blend of size, functionality, and cost-effectiveness, making it an excellent choice for both home enthusiasts and small-scale commercial operations. With precise control over the roasting process, enhanced flavor development, and a user-friendly design, it stands out as a valuable addition to any coffee setup. Whether you¨re considering a Yoshan coffee roaster or exploring other options, investing in a coffee roasting machine of this size can significantly elevate your coffee experience.

　　By choosing the right coffee roaster machine, you can enjoy the benefits of freshly roasted coffee, achieve consistent quality, and make a positive impact on your business or home brewing. Embrace the power of a 2 kg coffee roaster and discover why it truly is your best brew buddy.

　　Wireless chargers have become a necessity for many people. Their convenient use means that people no longer need to plug in cables for charging. Just put your phone on the charger to complete the charging, which is very convenient. So, how does a wireless charger work? How to choose a wireless charger that suits you? Let’s discuss it together.The industry believes that, wireless charging station The development of our company marks the rapid and steady progress of the whole industry. https://www.xtwkitway.com/

　　01 Working principle of wireless charger

　　The principle of fast wireless charging is to use electromagnetic induction to convert electrical energy into wireless energy. When current passes through the coil, a magnetic field is generated. When the magnetic flux of the closed circuit changes, an induced electromotive force is generated. The wireless charging station base is responsible for converting the current into a constantly changing magnetic field. Because there is a coil on the back cover of the charging device, when the magnetic field of the base changes, the magnetic flux in the coil also changes, thereby generating an induced electromotive force to charge the device.

　　Quick Tips: Wireless Charging

　　02 Advantages and disadvantages of wireless chargers

　　Advantages:

　　Eliminate the trouble of cables

　　The traditional charging method requires the use of a charging cable to connect the power supply and the charging device, which is not convenient. The fast wireless charger uses wireless transmission technology to eliminate the trouble of cables and make the charging experience more convenient. There is no need to worry about the entanglement and damage of the wires, and it also saves the trouble of finding charging cables.

　　Protect charging devices

　　Traditional chargers need to be plugged in and out. Long-term plugging and unplugging can easily damage the charging port and affect the service life of the device. Wireless chargers can avoid wear and tear during plugging and unplugging, and will not cause physical damage to charging devices, making them safer and more reliable. Because wireless chargers are usually a panel that can be embedded in more flat scenes, they will also be more concealed and beautiful.

　　Quick Tips: Wireless Charging

　　Disadvantages:

　　Slower charging speed

　　Since wireless charging station need to transmit electrical energy to devices through wireless transmission technology, their charging speed is slower than traditional charging methods. For current wireless charging, the supported output power is generally 5~10w, while the wired charging strategy reaches up to 120w. At the same time, the more popular gallium nitride chargers can support 65w fast charging. In terms of charging speed, wireless charging is still in its early stages.

　　Insufficient charging distance

　　Wireless chargers need to maintain a certain distance from the device, generally between 3-8mm, and cannot be charged beyond this distance. Therefore, it is not as practical as traditional chargers, and there will be certain limitations in the use scenarios.

　　In the fast-paced world we live in, having an efficient way to charge our devices is essential. The 3-in-1 wireless charging station is a game-changer, offering numerous benefits that can significantly enhance your daily routine. Whether it’s for home, office, or travel, this versatile device simplifies the charging process and ensures your gadgets are always ready to use.After that, sport cam video Not afraid of the future, dare to fight and fight, and won applause again and again in the market. https://www.xtwkitway.com/

　　1. Streamlined Charging for Multiple Devices

　　One of the standout features of the 3-in-1 wireless charging station is its ability to charge multiple devices simultaneously. This is particularly beneficial for those who own multiple Apple products, such as an iPhone, Apple Watch, and AirPods. With a 3-in-1 wireless charger, you no longer need to deal with tangled wires or multiple charging bricks. This consolidated approach not only saves space but also reduces clutter, making your workspace or bedside table look much neater.

　　2. Fast and Efficient Charging

　　The 3 in 1 charging station is designed to provide fast and efficient charging. It delivers optimal power to each device, ensuring that they charge quickly and safely. This means you can spend less time waiting for your devices to charge and more time using them. Whether you need to top up your phone before heading out or ensure your AirPods are ready for a long day of meetings, the 3-in-1 wireless charging station has you covered.

　　How the 3-in-1 Charging Station Can Improve Your Daily Routine?

　　3. Safety Features for Peace of Mind

　　Safety is a major concern when it comes to charging devices, and the 3-in-1 wireless charger excels in this area. It comes equipped with multiple safety features, including over-current, over-voltage, short-circuit, and over-temperature protection. These features ensure that your devices are protected from potential damage during the charging process. Additionally, the foreign object detection feature adds an extra layer of safety, preventing the charger from being activated if an incompatible object is detected.

　　How the 3-in-1 Charging Station Can Improve Your Daily Routine?

　　4. Convenient for Travel

　　For those who travel frequently, the 3-in-1 wireless charging station is a perfect companion. Its compact and portable design makes it easy to pack and carry, allowing you to keep your devices charged on the go. No more carrying multiple chargers and cables！just one device that can handle all your charging needs. This convenience can make your travel experience much smoother and more enjoyable.

　　5. Improved Organization and Efficiency

　　Using a 3-in-1 charging station can significantly improve your organization and efficiency. With a designated spot for charging all your devices, you¨ll always know where to find them. This reduces the chances of misplacing your gadgets and ensures they are always ready for use. The charging station can also serve as a central hub for your devices, making it easier to manage and monitor their charging status.

　　How the 3-in-1 Charging Station Can Improve Your Daily Routine?

　　6. Enhanced Aesthetic Appeal

　　A sleek and modern design is another advantage of the 3-in-1 wireless charging station. It adds a touch of elegance to any setting, whether it¨s your office desk or bedside table. By eliminating the need for multiple chargers, it creates a cleaner and more organized look, enhancing the aesthetic appeal of your space.

　　Conclusion:

　　In conclusion, the 3-in-1 wireless charging station offers numerous benefits that can improve your daily routine. From streamlining the charging process and ensuring device safety to enhancing organization and aesthetic appeal, this versatile charger is an invaluable tool for anyone with multiple devices. By investing in a 3-in-1 wireless charger, you can enjoy a more efficient, organized, and stress-free charging experience.

　　When thinking of sports, the most striking thing that comes to mind is sports headphones, because headphones often accompany sports-loving friends on their sports journeys. However, the product I want to introduce today is related to sports, but it is not a companion like sports headphones, but is used to record our sports trajectory. For example, we can record everything we do in the form of short videos on this day. Sports cameras are small and portable, and are used to record various life fragments. So in the mixed technology market, what kind of sports camera is suitable for athletes?If you want to make a big difference in the market, sport cam video It is necessary to intensify the upgrading of products on the original basis in order to meet the consumption needs of consumers. https://www.xtwkitway.com/

　　4K Action Camera: Let the Action Camera Accompany You

　　The size of the 4k sports camera is really small, but it is the size of the palm, which is very suitable for outdoor travel and can be easily stored in pockets, backpacks, and suitcases. Ordinary sports cameras are only a few meters waterproof, but this one can reach a waterproof depth of 30 meters! ! ! The waterproof ability of sports cameras on the market is not satisfactory, and they all need special waterproof cases. But now, there is a waterproof 4k sports camera, and it is enough to go to the beach to play!

　　The ability to operate in water is limited, so the operation of this diving camera is very simple, with only two buttons, and it can be easily operated even with diving gloves. The diving camera has a special fixing device, which you can fix on the diving mask. The fixing device is universal and suitable for all current diving masks. Although it has super waterproof ability, it does not affect the shooting performance at all! Up to 4K resolution video, any shot is a master work.

　　4K Action Camera: Let the Action Camera Accompany You

　　When you come back from diving, you can use your mobile phone or computer to watch the playback. At the same time, the diving data will be displayed in the video at the same time, that is, you can know in detail what depth you are at and what you have shot. In the camera settings, you can set parameters such as shooting mode, resolution, white balance, brightness, saturation, metering method, time-lapse shooting, watermark, video encoding, etc. In the system settings, you can view memory card information, set firmware, etc.

　　4K Action Camera: Let the Action Camera Accompany You

　　As a civilian-level sports camera, the 4K action camera produced by XTW is excellent in both appearance design and function. Especially in the actual picture shooting effect, it can also meet the simple needs of the public, and the small and cute appearance design of the whole color agent is even more attractive. Especially for people who do morning exercises and walks, using a 4K sports camera can meet daily life and travel needs.

　　When it comes to sourcing watch bands for your business, it’s crucial to partner with a reliable and capable watch band manufacturer. With the increasing demand for high-quality watch straps, finding the right manufacturer can be a daunting task. To ensure that you are making the right choice, it’s important to evaluate a watch band manufacturer’s capabilities thoroughly. In this article, we will discuss the key factors to consider when evaluating a watch band manufacturers, including their experience in watch strap manufacturing, wholesale watch straps offerings, and overall capabilities.Therefore, this is the choice sports video camera The reason, there is no denying its positive impact. https://www.xtwkitway.com/

　　How to Evaluate a Watch Band Manufacturer¨s Capabilities?

　　Experience in Watch Strap Manufacturing

　　One of the most important factors to consider when evaluating a watch band manufacturer is their experience in watch strap manufacturing. A manufacturer with a proven track record in producing high-quality watch bands is more likely to meet your expectations and requirements. Look for a manufacturer that has a solid reputation in the industry and has been in the business for a significant amount of time. Additionally, inquire about the types of materials they use, their production processes, and their quality control measures. A manufacturer with extensive experience and expertise in watch strap manufacturing is more likely to deliver superior products that meet your standards.

　　How to Evaluate a Watch Band Manufacturer¨s Capabilities?

　　Wholesale Watch Straps Offerings

　　Another crucial aspect to consider when evaluating a watch band manufacturer is their wholesale watch straps offerings. As a business owner, you need a manufacturer that can provide you with a wide range of watch straps to cater to different preferences and styles. Whether you are looking for leather, metal, nylon, or silicone watch bands, it’s important to partner with a manufacturer that can offer diverse options to meet the needs of your customers. Additionally, inquire about their customization capabilities if you require bespoke watch straps for your brand. A manufacturer with a comprehensive wholesale watch straps catalog and customization options can provide you with the flexibility and variety you need to stay competitive in the market.

　　How to Evaluate a Watch Band Manufacturer¨s Capabilities?

　　Overall Capabilities

　　In addition to experience and product offerings, it’s essential to assess a watch band manufacturer’s overall capabilities. This includes their production capacity, lead times, quality assurance processes, and customer service. A manufacturer with efficient production capabilities and short lead times can ensure that you have a steady and reliable supply of watch straps to meet consumer demand. Furthermore, a robust quality assurance process is crucial to guarantee that the watch bands meet your specifications and uphold your brand’s reputation for excellence. Finally, excellent customer service is vital for maintaining a smooth and collaborative partnership with the manufacturer. Look for a manufacturer that is responsive, communicative, and dedicated to meeting your needs as a business partner.

　　How to Evaluate a Watch Band Manufacturer¨s Capabilities?

　　In conclusion, evaluating a watch band manufacturer’s capabilities is a critical step in establishing a successful partnership. By considering their experience in watch strap manufacturing, wholesale watch straps offerings, and overall capabilities, you can make an informed decision that aligns with your business goals. Partnering with a reputable and capable watch band manufacturer can provide you with the high-quality products and support you need to thrive in the competitive watch industry.

　　The working frequency of the wireless transceiver module is 315MHz or 433MHz (there are other special frequencies), and the SAW resonator is used to stabilize the frequency, so the frequency stability is extremely high. When the ambient temperature changes between-25 and+85 degrees, the frequency drift is only 3ppm/ degree. It is especially suitable for wireless remote control and data transmission system. The frequency stability of acoustic resonator is second only to that of crystal, but the frequency stability and consistency of general LC oscillator are poor. Even if high-quality fine-tuning capacitors are used, it is difficult to ensure that the tuned frequency points will not shift due to temperature difference and vibration.among RF Module It has given great spiritual support to entrepreneurs, and more entrepreneurs will contribute to this industry in the future. https://www.hkulike.com/

　　So how to use the wireless transceiver module correctly? The following small series of Zhuoxin Technology introduces the following three methods.

　　1. It is used to build a wireless communication network with star topology.

　　It must be a multi-point star topology, and some special places need wireless communication. On the one hand, this kind of transmitting and receiving module is cheap, and the cost of forming a star topology is relatively low; On the other hand, the transmitting and receiving module can adopt modular design, which is small in size, convenient to use and easy to integrate. This transmitting and receiving module is very practical for wireless networks with low communication speed and close distance.

　　2. Used for wireless multi-channel (parallel) control

　　Such as complex remote control robots, some places need multi-channel control. One method is that the receiver module is directly connected to the decoder, and then connected to electronic components such as relays to drive the subsequent controlled objects; Another method is to connect the receiving module with the single chip microcomputer, and then connect the relay and other electronic components with the single chip microcomputer after data processing to drive the subsequent controlled objects. Usually, a pair of transmitting and receiving modules can realize six parallel wireless control at most. If the number of channels required is more than six, multiple pairs of transmitting and receiving modules can be used to work at the same time to meet the actual needs.

　　3. Used for universal serial port (C502B) wireless data transmission.

　　Usually, many control instruments and devices use serial port, and communication with these devices must meet the requirements of serial port. Some extraordinary places, industrial control sites. When it is necessary to use wireless transmission mode, the transmitting and receiving module mentioned in this paper can be naturally selected. However, it must be explained here that in order to adopt this communication method, the corresponding software must be compiled at the transmitter and receiver to realize the file format conversion, so as to achieve the purpose of wireless communication. If the communication system is full duplex, two pairs of transmitter and receiver modules can be used to work at the same time.

　　Of course, there are some precautions when using the wireless transceiver module. The transmitting module should be installed vertically on the edge of the motherboard, and should be more than 5mm away from the surrounding devices to avoid being affected by the distribution parameters. The transmission distance of wireless transceiver module is related to modulation signal frequency and amplitude, transmitting voltage and battery capacity, sensitivity of transmitting antenna and receiver, and receiving and transmitting environment.

　　1. Wireless networkingbeyond doubt radio Module It will definitely lead the development direction of the whole industry and let its light bloom in this field. https://www.hkulike.com/

　　Networking requirements: networking in a wireless way in a local area network to realize resource sharing among devices.

　　Networking mode: wireless access points are placed in the center of local area network, and wireless network cards are installed on internet devices.

　　2. Mesh connection

　　Wireless mesh network is a pure wireless network system, and the APS in the network can be directly connected with each other through wireless channels.

　　3. Regional-oriented mobile Internet service

　　Networking requirements: provide mobile Internet service for mobile devices in this area in a large range.

　　Networking mode: base stations are selected in the area, and wireless access points are placed at each base station to form multiple overlapping cells to cover the area to be networked. If the wireless ad hoc network module is installed on the mobile device, you can enjoy the mobile networking service within this range.

　　4. Point to point connection

　　 Wireless connection between single computer and computer network

　　Networking requirements: realize wireless connection between remote computers and computer network center.

　　Networking mode: install a wireless access point external directional antenna in the computer network center, and install a wireless network card external directional antenna on a single machine opposite to the network center.

　　 Wireless connection between computer networks

　　Networking requirements: realize wireless connection between remote computer network and computer network center.

　　Networking mode: install a wireless access point external directional antenna in the computer network center, and install a wireless access point external directional antenna in the remote computer network opposite to the network center.

　　5. Point to multipoint connection

　　 Multi-point connection with different frequencies

　　Networking requirements: There are three wired networks: A, B and C. A is the central network, and it is necessary to realize the wireless connection between A network and B network and C network respectively.

　　Networking mode: a wireless bridge external directional antenna is installed in network A, and a wireless bridge external directional antenna is installed in network B opposite to network A; Another wireless bridge external directional antenna is installed on the A network, and another wireless bridge external directional antenna is installed on the C network, which is opposite to the second directional antenna of the A network.

　　 Co-frequency multi-point connection

　　Networking requirements: There are four wired networks: A, B, C and D. A is the central network, and it is necessary to realize the wireless connection between A network and B network, C network and D network respectively.

　　Networking mode: A wireless bridge external omni-directional antenna is installed on the A network, and a wireless bridge external directional antenna is installed on the B network, the C network and the D network respectively, which is opposite to the A network, and the A network is connected with the B, C and D networks at the same frequency.

　　6. Relay connection

　　 Connection across obstacles

　　Networking requirements: wireless networking should be realized between the two networks, but there are obstacles between the geographical locations of the two networks, and there is no visible path required for microwave transmission.

　　Networking mode: By establishing a relay center, find a location where two networks can be seen at the same time and set up a relay point, so that the two networks can establish a connection through relay.

　　 Long distance connection

　　Networking requirements: wireless networking should be realized between two networks, but the distance between the two networks exceeds the maximum communication distance that can be achieved by point-to-point connection.

　　Networking mode: establish a relay point between two networks, so that the two networks can establish a connection through relay.

　　Wireless mesh network can form a broadband wireless communication network covering the city, provide wireless VOIP and mobile broadband multimedia communication services, and also provide metropolitan broadband wireless mobile access services for users in certain industries.

　　1. Wireless networkingThe industry believes that, radio Module The development of our company marks the rapid and steady progress of the whole industry. https://www.hkulike.com/

　　Networking requirements: networking in a wireless way in a local area network to realize resource sharing among devices.

　　Networking mode: wireless access points are placed in the center of local area network, and wireless network cards are installed on internet devices.

　　2. Mesh connection

　　Wireless mesh network is a pure wireless network system, and the APS in the network can be directly connected with each other through wireless channels.

　　3. Regional-oriented mobile Internet service

　　Networking requirements: provide mobile Internet service for mobile devices in this area in a large range.

　　Networking mode: base stations are selected in the area, and wireless access points are placed at each base station to form multiple overlapping cells to cover the area to be networked. If the wireless ad hoc network module is installed on the mobile device, you can enjoy the mobile networking service within this range.

　　4. Point to point connection

　　 Wireless connection between single computer and computer network

　　Networking requirements: realize wireless connection between remote computers and computer network center.

　　Networking mode: install a wireless access point external directional antenna in the computer network center, and install a wireless network card external directional antenna on a single machine opposite to the network center.

　　 Wireless connection between computer networks

　　Networking requirements: realize wireless connection between remote computer network and computer network center.

　　Networking mode: install a wireless access point external directional antenna in the computer network center, and install a wireless access point external directional antenna in the remote computer network opposite to the network center.

　　5. Point to multipoint connection

　　 Multi-point connection with different frequencies

　　Networking requirements: There are three wired networks: A, B and C. A is the central network, and it is necessary to realize the wireless connection between A network and B network and C network respectively.

　　Networking mode: a wireless bridge external directional antenna is installed in network A, and a wireless bridge external directional antenna is installed in network B opposite to network A; Another wireless bridge external directional antenna is installed on the A network, and another wireless bridge external directional antenna is installed on the C network, which is opposite to the second directional antenna of the A network.

　　 Co-frequency multi-point connection

　　Networking requirements: There are four wired networks: A, B, C and D. A is the central network, and it is necessary to realize the wireless connection between A network and B network, C network and D network respectively.

　　Networking mode: A wireless bridge external omni-directional antenna is installed on the A network, and a wireless bridge external directional antenna is installed on the B network, the C network and the D network respectively, which is opposite to the A network, and the A network is connected with the B, C and D networks at the same frequency.

　　6. Relay connection

　　 Connection across obstacles

　　Networking requirements: wireless networking should be realized between the two networks, but there are obstacles between the geographical locations of the two networks, and there is no visible path required for microwave transmission.

　　Networking mode: By establishing a relay center, find a location where two networks can be seen at the same time and set up a relay point, so that the two networks can establish a connection through relay.

　　 Long distance connection

　　Networking requirements: wireless networking should be realized between two networks, but the distance between the two networks exceeds the maximum communication distance that can be achieved by point-to-point connection.

　　Networking mode: establish a relay point between two networks, so that the two networks can establish a connection through relay.

　　Wireless mesh network can form a broadband wireless communication network covering the city, provide wireless VOIP and mobile broadband multimedia communication services, and also provide metropolitan broadband wireless mobile access services for users in certain industries.

　　The most basic usage of GPRS DTU is: put a SIM card with GPRS function in DTU, after DTU is powered on, first register to GPRS network, and then establish connection with data processing center through GPRS network. After the GPRS DTU is powered on, first read the working parameters saved in the internal FLASH (including GPRS dialing parameters, serial baud rate, IP address of data center, etc., which have been configured in advance).So, I believe radio Module In the future, it will be promising to create a miracle belonging to the industry. https://www.hkulike.com/

　　GPRS DTU logs into GSM network, and then dials GPRS PPP. After successful dialing, GPRS DTU will get an internal IP address randomly assigned by Mobile. That is to say, GPRS DTU is in the mobile intranet, and its intranet IP address is usually not fixed and changes with each dial. We can understand that GPRS DTU is a mobile device in the internal LAN, and it communicates with the external Internet public network through the mobile gateway. This is similar to the way that computers in a local area network access external networks through gateways.

　　GPRS DTU actively initiates communication connection with data center, and keeps communication connection always existing. Because GPRS DTU is in the mobile intranet and the IP address is not fixed. Therefore, only GPRS DTU can actively connect to the data center, but not the data center. This requires the data center to have a fixed public IP address or a fixed domain name. The public IP address or fixed domain name of the data center is stored as a parameter in the GPRS DTU, so that once the GPRS DTU is powered on and dialed successfully, it can actively connect to the data center.

　　Specifically, GPRS DTU sends TCP or UDP communication requests to the data center through the IP address and port number of the data center. After receiving the response from the center, GPRS DTU thinks that the handshake with the center is successful, and then keeps this communication connection. If the communication connection is interrupted, GPRS DTU will immediately shake hands with the center again.

　　Since the TCP/UDP communication connection has been established, two-way data communication can be carried out.

　　For DTU, as long as the two-way communication with the data center is established, it is relatively simple to complete the conversion between user serial data and GPRS network data packets. Once receiving the user’s serial data, DTU immediately encapsulates the serial data in a TCP/UDP packet and sends it to the data center. Conversely, when DTU receives the TCP/UDP packet from the data center, it takes out the data content and immediately sends it to the user equipment through the serial port.

　　Through the wired data acquisition center, it communicates with many GPRS DTU in two directions at the same time. This is the most commonly used way in GPRS DTU application system at present.

　　The JZX811A/B ad hoc network module of Techno Core adopts LoRa spread spectrum technology, and its working frequency is integrated with 433MHZ and 490MHZ. Simply setting the channel can complete the conversion of working frequency, which greatly meets the requirements of various application environments and improves the anti-interference ability of the communication system.Since then, more and more people have found that radio Module The value of, thus affecting the choice of many people. https://www.hkulike.com/

　　Ad hoc network is a planar peer-to-peer mesh network, and each node in the network can be used as a routing node and a target node. The communication module adopts the company’s self-organizing network protocol, making full use of the redundant routing in the network, and each node has multiple backup paths besides the main path; The network has good self-healing. When the access link between a node and the center fails, the center can automatically start the path repair function of the node.

　　The JZX811 networking network is composed of a coordinator JZX811B(Coordinator) and several nodes JZX811A(Router), and its system structure is shown in the following figure:

　　Technical indicators of JZX811A/B module of Techno Core:

　　1. modulation mode: LoRa;

　　2. Working frequency: 433 MHz/490 MHz;

　　3. Transmitting power: 50mW (17dB);

　　4. Receiving sensitivity:-139 DBM;

　　5. Emission current: 150mA;

　　6. Receiving current: 15mA;

　　7. Dormant current: JZX811A6uA; JZX811B has no dormancy;

　　8. Channel rate: 200/300/600/1200/2400/4800/9600/19200 bit/s;

　　9. Serial port speed: 1200/2400/4800/9600/19200 bit/s;

　　10. Interface type: TTL, RS232, RS485;

　　11. Interface data format: 8E1/8N1/8O1 can be customized by users;

　　12. Working power supply: DC 3.3~5.5V;

　　13. Working temperature:-20≧ ~ 75≧;

　　14. Working humidity: 10% ~ 90% relative humidity, no condensation;

　　15. Maximum number of bytes per packet: 230 bytes;

　　16. Maximum routing level: level 5.