คู่มือผู้ใช้โมดูล RF ไร้สาย LoRa EBYTE E22-400T37S

1. บทนำ

The EBYTE E22-400T37S is a new generation LoRa wireless module designed for long-distance, low-power communication. Operating in the 433MHz frequency band, it integrates advanced LoRa spread spectrum technology, PA+LNA for extended range, and various features to ensure reliable and secure data transmission. This manual provides essential information for the proper setup, operation, and maintenance of your E22-400T37S module.

Figure 1: EBYTE E22-400T37S LoRa Wireless RF Module.

2. คุณสมบัติและฟังก์ชั่น

• การสื่อสารที่ปลอดภัย: Supports user-defined communication keys for enhanced data confidentiality.
• Wireless Parameter Configuration: Allows remote configuration and reading of module parameters via wireless commands.
• Over-the-Air Wake-up (WoL): Enables ultra-low-power function, ideal for battery-powered applications.
• Multiple Transmission Modes: Supports fixed-point transmission, broadcast transmission, and channel monitoring.
• โหมดสลีปลึก: Achieves power consumption less than 10uA in deep sleep, extending battery life.
• การรองรับแถบความถี่: Operates in the global license-free ISM 433MHz frequency band and supports 470MHz meter reading band.
• ระยะการสื่อสารที่ขยายออกไป: Built-in PA+LNA enables communication distances up to 20km under ideal conditions (16km stable in urban environments).
• Parameter Retention: All configured parameters are saved upon power-down and restored upon power-up.
• Watchdog Design: Efficient watchdog ensures automatic module restart and continued operation in case of exceptions.
• ฟังก์ชันการป้องกัน: Includes built-in undervoltage, ล้นเกินtage warning, and over-temperature protection with warning LED.
• การกระจายความร้อน: Matrix pad reserved at the bottom for secondary development heat dissipation.
• เทคโนโลยี LoRa Spread Spectrum: Utilizes advanced LoRa spread spectrum technology for improved range, speed, and lower power consumption.
• Automatic Relay Networking: Supports multi-level relay for ultra-long-distance communication and simultaneous operation of multiple networks in the same area.
• LBT (Listen Before Talk) Function: Improves communication success rate in noisy environments by checking channel availability before transmission.

Figure 2: New Generation LoRa Spread Spectrum Technology provides enhanced anti-interference and longer transmission distance.

Figure 3: E22-400T37S demonstrates significantly lower power consumption compared to general LoRa modules, extending battery life.

3. ข้อมูลจำเพาะ

Figure 4: Physical dimensions of the E22-400T37S module (50mm x 30.9mm).

Figure 5: The compact size of the E22-400T37S module, suitable for space-constrained applications.

4. การตั้งค่า

To set up your E22-400T37S module, follow these general guidelines:

1. แหล่งจ่ายไฟ: Connect the module to a stable power supply within the 4.5V to 15V range. Ensure correct polarity.
2. การเชื่อมต่อเสาอากาศ: Attach a suitable 433MHz antenna to the module's IPEX connector. A properly matched antenna is crucial for optimal performance.
3. การเชื่อมต่อ UART: Connect the module's TTL UART pins (TX, RX, GND) to your microcontroller or host device. Ensure the baud rate and other serial parameters are correctly configured on both ends.
4. การกำหนดค่าเริ่มต้น: Use the provided configuration software or send AT commands via UART to set initial parameters such as operating frequency, air data rate, and communication mode. Refer to the detailed EBYTE E22-400T37S datasheet for specific command sets.
5. การติดตั้ง: Securely mount the module in your application, considering proper ventilation and avoiding metallic enclosures that could interfere with RF signals. The matrix pad at the bottom can be used for heat dissipation if needed.

5. คู่มือการใช้งาน

The E22-400T37S module offers various operating modes and functionalities:

• การส่งผ่านข้อมูล: Once configured, data can be sent and received via the UART interface. The module handles the LoRa modulation and demodulation automatically.
• Parameter Modification: Parameters can be modified wirelessly or via the UART interface. For wireless configuration, send specific command data packets.
• โหมดสลีปลึก: To conserve power, the module can be put into deep sleep mode. It can be woken up via over-the-air commands or specific pin triggers.
• LBT (Listen Before Talk): Enable LBT for improved communication reliability in environments with potential interference. The module will listen for channel activity before transmitting.
• Relay Networking: For extended range, configure modules to act as relays. This allows multi-hop communication across greater distances.
• การติดตาม: The module supports channel monitoring, allowing you to assess channel activity and signal quality.

For detailed command sets and programming examples, refer to the official EBYTE E22-400T37S programming guide and datasheet.

6. สถานการณ์การใช้งาน

The E22-400T37S LoRa module is versatile and suitable for a wide range of applications requiring long-distance, low-power wireless communication:

Figure 6: The E22-400T37S module is applicable in diverse fields such as Industrial Manufacturing (replacing signal cables), Smart Home (IoT solutions), Smart Farm (accurate monitoring), and Hotel Management (supporting numerous access points).

• การผลิตภาคอุตสาหกรรม: Ideal for short-distance industrial applications, replacing traditional signal cables to reduce wiring and simplify management.
• บ้านอัจฉริยะ: Provides robust physical layer technology solutions for home Internet of Things (IoT) ecosystems.
• ฟาร์มอัจฉริยะ: Enables accurate monitoring of various operational details across agricultural areas.
• Hotel Management: Supports a large number of access points for comprehensive management systems within hotels.

7. การบำรุงรักษา

To ensure the longevity and optimal performance of your E22-400T37S module, observe the following maintenance guidelines:

• สภาพแวดล้อม : Operate the module within its specified temperature and humidity ranges. Avoid extreme temperatures, direct sunlight, and high humidity.
• ความสะอาด : Keep the module free from dust, dirt, and moisture. Do not use liquid cleaners directly on the module.
• การจัดการ: Handle the module with care, especially the antenna connector and pins. Avoid static discharge by using appropriate ESD precautions.
• ความเสถียรของแหล่งจ่ายไฟ: Ensure a stable and clean power supply to prevent damage from voltagความผันผวนของอี
• ความสมบูรณ์ของเสาอากาศ: Periodically check the antenna connection for looseness or damage. A damaged antenna can significantly reduce performance.
• อัพเดตเฟิร์มแวร์: ตรวจสอบของผู้ผลิต webงาน (www.cdebyte.com) for any available firmware updates that may improve performance or add features.

8 การแก้ไขปัญหา

If you encounter issues with your E22-400T37S module, consider the following troubleshooting steps:

• ไม่มีพลังงาน/ไฟ LED ดับ:
  • ตรวจสอบการเชื่อมต่อแหล่งจ่ายไฟและระดับเสียงtage.
  • Ensure the power supply is within the 4.5V-15V range.
• ไม่มีการสื่อสาร:
  • Verify UART connections (TX, RX, GND) and ensure they are not swapped.
  • Confirm baud rate, parity, data bits, and stop bits settings match on both the module and host device.
  • Check if the module is in deep sleep mode; if so, send a wake-up command.
  • Ensure the antenna is properly connected and not damaged.
• Poor Range/Intermittent Connection:
  • Check antenna type and ensure it is suitable for 433MHz.
  • Verify antenna is securely connected.
  • Ensure there are no major obstructions (e.g., thick walls, metal objects) between modules.
  • Check for strong interference sources in the operating environment.
  • Consider enabling LBT function if operating in a noisy environment.
  • Ensure modules are configured with matching parameters (frequency, air data rate, etc.).
• โมดูลร้อนเกินไป:
  • ตรวจสอบให้แน่ใจว่ามีการระบายอากาศที่เพียงพอรอบๆ โมดูล
  • ตรวจสอบปริมาณแหล่งจ่ายไฟtage ไม่สูงเกินไป
  • Reduce transmission power if possible and if not impacting communication.
  • The module has built-in over-temperature protection and will automatically stop sending if it exceeds its maximum temperature.
• พฤติกรรมที่ไม่คาดคิด:
  • Perform a factory reset if supported (refer to datasheet).
  • Re-configure the module parameters.
  • ตรวจสอบการอัปเดตเฟิร์มแวร์

9. การรับประกันและการสนับสนุน

EBYTE products are designed for reliability and performance. For specific warranty terms and conditions, please refer to the official EBYTE warranty policy available on their webเว็บไซต์.

For technical support, product inquiries, or further assistance, please contact EBYTE directly:

• ผู้ผลิต: เฉิงตู Ebyte Electronic Technology Co., Ltd.
• Webเว็บไซต์: www.cdebyte.com
• ผู้แทนสหภาพยุโรป: avamaster Consulting GmbH
• ที่อยู่สหภาพยุโรป: Bethmannstr. 30-32, 60311 Frankfurt am Main, Germany
• EU Contact Email: compliance@avamaster.com

Figure 7: Product packaging displaying manufacturer and EU representative contact details.