• Acoustic Emission Technology Introduction: Acoustic emission (AE) involves transient elastic waves from rapid energy release in materials, used to evaluate material performance and structural integrity.
• Main Purpose: Locating AE sources, analyzing their properties, determining AE occurrence time and load, and assessing severity.
• Characteristics: AE testing is dynamic, sensitive to linear defects, provides real-time defect information, and is suitable for complex geometries.
• Applications: Widely used in petrochemical, power, material testing, civil engineering, aerospace, metal processing, and transportation industries.
• Key Terms: Definitions of terms like starting point, end point, duration, rise time, sensor array, attenuation, and more are provided.

• RAEM1 Introduction: Overview of the RAEM1 system, its hardware, technical specifications, and quick start guide.
• Configuration Tool and Software: Introduction to software and cloud tools for RAEM1 configuration.

• Details on configuring Ethernet, WiFi, and 4G connections for RAEM1.

• Instructions on using RAEM1 configuration software, including sample, network, storage, and system settings.

• Device management, data monitoring, waveform analysis, and personal settings on the Qingcheng IoT Cloud Platform.

• Steps for registering, creating products and devices, editing TSL models, and activating devices on the Alibaba Cloud Platform.

• Guidelines for Ethernet and Wi-Fi transmission using U3H software.

• Accessing data via RAEM1 configuration software and cloud server.

• Methods and tools for analyzing data collected from RAEM1.

• Details on TCP and 485 integration protocols for third-party development.

• Channel: Pathway for acoustic emission signals to enter the acquisition card for processing.
• Sampling Rate: Number of sampling points per second, e.g., 10MSPS means 10 million points per second.
• Sampling Accuracy: Determines signal resolution within the input voltage range, e.g., 16-bit accuracy divides 20V into 65,536 units.
• TCP/IP: Widely used network communication protocol.
• AST: Automatic sensor testing to evaluate sensor sensitivity.
• ADC: Converts analog voltage signals into digital signals.
• Analog Filter: 4th order Butterworth filter used before ADC.
• Pre-amplifier: Amplifies weak voltage signals for long-distance transmission.
• Coaxial Cable: Transmits pre-amplifier output signals, typically with 75 Ω impedance.
• IoT: Internet of Things.
• Hit Extract Sample Mode: Uses thresholds to define AE signal hits.
• Time Parameter Sample Mode: Collects AE hits based on set thresholds and sample length.
• System Rating: Parameters are rated based on intensity and activity.
• EET: Enforced end time for AE hits, effective only in Hit Extract mode.
• HDT: Hit definition time, determines the end point of a hit signal.
• HLT: Hit lock time, a window to ignore signals after an AE event.
• U3H: Refers to data file format or software server.

The RAEM1 Remote Acoustic Emission system uses ZYNQ technology with an AD4001 chip, supporting IoT operations like cloud data storage. It consists of three parts: RAEM1 (sensor, acquisition, communication), Platform (cloud server, LAN, PC, phones), and Client end (phones, PC, screens). The system integrates AE signal acquisition, analysis, storage, and communication. It features multiple data communication methods and built-in SD storage to prevent data loss.

The RAEM1 system includes a cylinder with an external sensor, 12V DC power supply, and communication methods like Ethernet and Wi-Fi or 4G. It features a power switch, cable socket, sensor connector, antenna connector, and indicator lights for power, operation, and alarms.

• Single channel AE input with 2MHz sampling rate and 16-bit accuracy.
• Signal input bandwidth of 10k-1000kHz and dynamic range of 70dB.
• Compatible with integral preamp sensors.
• Flexible data collection settings and noise ASL better than 30dB.
• Output data types include waveform, parameters, and parameter ratings.
• Built-in 64G memory SD card for data storage.
• Optional communication methods: 4G, Wi-Fi, Ethernet, RS485.
• Operational temperature: -20℃ to +50℃; Protection grade: IP65.

Steps include reading the RAEM1 label, connecting cables and power, attaching the antenna and sensor, and configuring Ethernet settings for first-time use. The device automatically connects to Wi-Fi and starts data acquisition if previously configured.

RAEM1 automatically collects data and communicates through existing configurations. Users can modify settings via communication methods, with real-time parameter display supported. Factory settings are recommended, but modifications can be saved as configuration files. Data can be accessed and downloaded through various methods, including Qingcheng IoT Cloud and U3H software.

• Ethernet Connection: RAEM1 can connect directly to a PC or through switches and routers. The default IP address is 192.168.0.101. Configuration involves setting the Ethernet Duplex Mode and IPv4 settings.
• Wi-Fi Connection: Two modes are available: Hotspot and Router. Hotspot mode uses a default configuration with a specific SSID and password. Router mode requires configuring the RAEM1 to connect through a router, ensuring no network address conflicts.
• 4G Connection: Requires a 4G SIM card. The setup involves inserting the SIM card and possibly configuring the APN settings through the RAEM1 Configuration software.

• RAEM1 Configuration Software: A Windows program for configuring RAEM1 devices. It requires disabling the firewall and WLAN on the PC. The software interface includes device configuration information and a device list. Users can modify settings, update firmware, and manage device operations.
• Qingcheng IoT Cloud and Alibaba Cloud: Platforms for remote monitoring and configuration of RAEM1 devices, supporting real-time data viewing and online debugging.
• U3H Software: Used for viewing real-time AE feature parameters and waveforms collected by RAEM1.

• Ethernet Configuration: Involves setting network properties and ensuring proper cable connections.
• Wi-Fi Configuration: Requires selecting the appropriate mode (Hotspot or Router) and configuring network settings accordingly.
• 4G Configuration: Involves inserting a SIM card and possibly adjusting APN settings for network connectivity.

• Ensure proper network settings to avoid conflicts and ensure connectivity.
• Follow detailed steps for each connection method to ensure successful configuration.
• Use the RAEM1 Configuration software for initial setup and ongoing management of device settings.

• Enable Rating: Determines if the rating function is active.
• Intensity Config: Intensity should not exceed 3 levels. Multiple rules can be added under the same intensity level, with an OR condition between rules and an AND condition within a rule.
• Activity Config: Activity cannot exceed 4 levels. Each intensity greater than or equal to level 1 counts as one activity.
• Rating Interval: Default is 20 seconds, during which data is collected and rated.
• Rating Report Criteria: Options to report intensity levels, with alarms triggered at specified levels.
• Intensity Reporting Min. Interval: Default is 10 seconds, preventing repeated alarms for the same intensity level within this period.

• Timing Configuration: Allows for continuous or interval sampling modes, with configurable sampling and sleep times.
• Wire Break Rate Configuration: Sets criteria for determining wire break rates based on intensity levels.

• Data Manage: Allows deletion of data to free up storage space.
• Firmware Upgrade: Describes the process for upgrading device firmware via FTP.
• Device Alarm: Configures alarm settings for intensity, comprehensive rating, and activity levels.
• Wire Break Rate Alarm: Sets alarm information for wire break rates.
• Data Monitoring: Displays parameter changes over time, with options to filter by company, group, device number, and time.

• Real-time Waveform: Displays real-time waveforms, with historical data available on a separate page.
• History Waveform: Shows all historical waveforms, with options to filter by time and device.
• Rating: Evaluates acoustic emission events, combining intensity and activity levels to meet comprehensive rating standards.
• Rating Data: Displays intensity and comprehensive rating levels, with detailed tables for each.
• Comprehensive Rating: Shows comprehensive rating history in a line diagram format.
• Continuous Intensity Rating: Displays intensity rating trends over time.
• Activity Statistics: Shows activity level trends over time.

• Personal Setting: Allows users to set personal information and configure device and wire break alarms.
• Wire Break Monitoring: Monitors wire break rates and trends, particularly for bridge suspension cables.

• Rate: 57600
• Bits: 8
• Stop bit: 1
• Verification: none
• Flow control: none
• Endianness: Little Endian

• Arrival time (seconds): unsigned int, 4 bytes
• Arrival time (micro-seconds): unsigned int, 4 bytes
• Protocol Version: 4 bytes
• Waveform points: unsigned int, 4 bytes
• Sample speed (K/S): unsigned int, 4 bytes
• Gain, preamplifier: unsigned int, 4 bytes
• Enlarge, circuit magnification: Double, 8 bytes
• Waveform data: Each waveform has 2 bytes, totaling 2N bytes for N waveforms

To send data as a 485 Master, activate the 485 Send Param function in RAEM1 Configuration software. The protocol format includes:

• Protocol Header: 4 bytes, 0xA5A5A5A5
• Protocol Content: Varies based on protocol details
• CRC Verification: 2 bytes, specific to protocol content
• Protocol End: 4 bytes, 0xFCFCFCFC

To send data as a 485 Slave, activate the 485 Control function in RAEM1 Configuration software. The protocol format is similar to the Master mode.

When both 485 Send Param and 485 Control functions are enabled, the device operates in Master/Slave mode:

1. Defaults to Master mode, sending parameter data.
2. Every 5 seconds, sends a switch mode command to transition to Slave mode for control command transmissions. The Slave must respond within 1 second.
3. After receiving a control command, it switches back to Master mode to resume data transmission.

For detailed protocols, contact Qingcheng company.