Trolley Bracket
1. Integrated body design integrates mounting, mobility, power supply, display, storage and external interfaces into one, capable of mounting the complete practical training system;
2. The vertical column of the trolley adopts an aluminum alloy structure with a heavy-duty dimension design;
3. The bottom of the trolley adopts a four-point stable design, equipped with no less than 4 universal silent casters with foot brake devices;
4. After all equipment is installed on the trolley, it can withstand an inclination angle of no less than 10°;
5. The trolley is equipped with a high-strength display platform, supporting a maximum load capacity of no less than 40kg;
6. The display platform is equipped with a scale-marked rubber pad, which can avoid wear of the display platform and display the size of the sample;
7. The trolley is equipped with a self-adsorbing storage drawer, which automatically adsorbs when closed;
8. The cantilever of the trolley supports 360° horizontal rotation and two-section multi-directional adjustment; vertical adjustable angle ≥60°;
9. The cantilever joint supports force adjustment, ensuring free pulling and hovering at any angle under a load of no less than 2kg;
Supports concealed wiring. The rear of the entire trolley is equipped with a cable organizer, which can arrange the wires of the rear interfaces through the cable organizer;
Supports no less than 1 HDMI OUT, 1 USB 3.0, 1 RJ45, and 1 charging interface;

Teaching Demonstration Trolley Power Supply Module
1. Equipped with a full-color battery information display screen of no less than 50mm×20mm, the screen can be turned on/off by physical buttons, displaying power, output voltage, output current and battery temperature;
2. Equipped with a power button to control the power switch of the complete set of equipment;

Practical Training & Teaching Demonstration Terminal Host
1. High Integration: Adopts a highly integrated all-in-one design, integrating a ≥21.5-inch IPS touch screen and no less than 1 Android operating system into a single terminal;
2. Streamlined overall design, with built-in camera, speaker and audio acquisition module;
3. Hardware Configuration:
a. CPU: Equipped with no less than 6-core processor;
b. Operating System: Android 7.0 or above;
c. Memory & Storage: ≥4GB RAM + ≥256GB ROM;
d. Equipped with a ≥21.5-inch 1080P IPS touch screen;
4. Expansion Interfaces:
a. Interfaces include but are not limited to HDMI, USB 2.0, USB 3.0, POE network port, Type-C debugging port, Reset key, and 3.5mm audio monitoring port;
b. Supports debugging via Type-C port, realizing real-time display of the device's operation interface on a debugging computer;
c. Equipped with no less than 2 aviation interfaces with threaded locking structure, which cannot be easily pulled out after locking. It can connect external network PTZ cameras without additional external power supply, and the network port light is normally on;
5. The rear panel supports standard VESA mounting holes;
6. Network Features:
a. Single Network Port with Multiple IPs: Supports independent IP assignment for multiple cameras and the terminal system respectively, facilitating compatibility with third-party monitoring system calls;
b. Single Network with Single IP: When no docking with third-party systems is required, the terminal's built-in streaming media service can forward camera video streams and support a certain number of concurrent accesses; external systems only need to communicate with the terminal's Wi-Fi network card or wired network card to obtain video streams of multiple cameras respectively; other devices can directly connect to the terminal to communicate with the entire terminal suite; cameras can be configured on unrelated LAN segments to reduce the occupation of internal network IP resources;

Wireless Module of Practical Training & Teaching Demonstration Terminal
1. Built-in 5GHz Wi-Fi module, equipped with high-gain antenna;
2. Frequency Band: 2.4GHz / 5GHz;
3. Compliant with IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n standards;

Audio Acquisition Module of Practical Training & Teaching Demonstration Terminal
1. Microphone Type: Electret condenser type;
2. Signal-to-Noise Ratio (SNR): ≥80dB;
3. Directivity: Omnidirectional;
4. Supports analog MIC input;
5. Sensitivity: -28dB to -22dB, typical value: -25dB;
6. Output Impedance: ≤2.2KΩ;
7. Built-in noise reduction function;

Front Camera Module of Practical Training & Teaching Demonstration Terminal
1. The teaching demonstration terminal is equipped with a ≥200W pixel front camera with 1/3.2-inch CMOS and supporting 1080P resolution;
2. Effective Focal Length: ≥4.3mm; Field of View: ≥73° (wide angle);
3. Output Image Format: MJPEG / YUV;
4. Maximum Effective Pixels: ≥1920×1080;
5. Image Adjustment Functions: Supports white balance / exposure / gain;

Power Supply Module of Practical Training & Teaching Demonstration Terminal
1. Power Supply Modes: Supports DC power supply and POE power supply;

High-definition PTZ camera    
1. Horizontal Field of View: ≥70°;
2. Lens Zoom: 12X optical zoom, 16X digital zoom;
3. Video Coding Standards: Supports but not limited to YUY2/ MJPEG/ H.264/ H.265;
4. Audio Compression Standards: Supports but not limited to AAC;
5. Image Resolution: ≥3840x2160; The output frame rate can reach 30fps under 1080P; Effective pixels ≥8 million;
6. PTZ Control: Supports setting no less than 250 presets;
7. Image Adjustment Functions: Supports one-key white balance, shutter control, backlight compensation, 2D&3D digital noise reduction, and image freeze;
8. Signal-to-Noise Ratio (SNR): ≥55dB;
Remote Commands: Supports camera control via RS232, RS485, network and USB;
PoE Power Supply: Realizes full-machine power supply, camera control and audio-video transmission through wired network;
Power Supply Modes: Simultaneously supports USB 5V power supply, power adapter power supply and PoE power supply;
Full-Function USB Interface: The USB port is of Type-C form, compatible with USB3.0 and USB2.0, supports audio, coded output, and complies with UVC v1.1~1.5 protocols;
Hardware Interfaces: Supports no less than 1 channel of HDMI output, 1 channel of LINE IN, 1 RJ45 interface, 1 channel of RS-232 IN, 1 channel of RS485 IN, and 1 Type-C interface.

HD camera      
1. Sensor Pixels: ≥8 million;
2. Optical Zoom: ≥8X, Digital Zoom: ≥8X;
Scanning Method: Progressive;
Adjustable Parameters: Brightness, Chroma, Saturation, Contrast, Sharpness;
Maximum Field of View: ≥60°;
Signal-to-Noise Ratio (SNR): ≥55dB;
Video Coding Standards: Supports but not limited to H.265/ H.264/ MJPEG;
Network Output Video Supported Resolutions: 3840×2160, 1920×1080, 1280×720, 1024×576, 720×480, 720×408, 640×480, 640×360;
HDMI Output Video Supported Resolutions: 3840×2160, 1920×1080, 1280×720, 1024×576, 720×480, 720×408, 640×480, 640×360;
Supports CBR and VBR;
Supports video output via micro HDMI and network interface;
Network Interface Supports POE Function;
Overall Power Consumption: ≤13W;

The whole machine supports macro shooting function. When small objects are ≤30cm away from the camera, it can still focus normally and capture clear video images;
The whole machine supports TOF ranging function. Through the built-in TOF module, it can quickly measure the distance between the object and the camera, and thus quickly achieve focusing, meeting the rapid focusing needs when moving the camera in experimental and practical training scenarios;

The camera is equipped with an ergonomically designed handle. The handle is equipped with physical buttons for freezing the screen, which can support the image freeze function. After pressing the button, the camera screen freezes and no longer changes, facilitating teaching annotation; pressing the button again thaws the screen. It is equipped with a set of ship-shaped buttons, located below the freeze button, adopting an arc curved surface design to improve the hand feel. The ship-shaped buttons can be used to zoom in and out of the camera screen. When holding the handle with one hand, you can shake the camera position and press the freeze, zoom in and zoom out buttons with your thumb.