Infrared Dual-Probe Sit-Up Tester

Standalone Features:
1. Automatically counts the number of sit-ups performed in one minute, reflecting the strength of the abdominal muscle group.
2. The testing sensor rod can be adjusted forward and backward according to the subject's height, ensuring standardized testing movements.
3. Equipped with anti-interference sensors and designed to resist sunlight interference, enhancing testing accuracy and sensitivity.
4. Uses an LED segmented screen to display test results, with the ability to independently set test duration on the standalone unit.
5. Key Technical Parameters:
Measurement Range: 1 to 9999 counts
Increment Value: 1 count
Measurement Accuracy: ±1 count
Main Unit Features:
1) The main unit employs an industrial-grade CONTEX-M3 CPU for direct low-level hardware control, developed with fully independent intellectual property. It runs on a closed 32-bit proprietary encrypted operating system, ensuring stability and security while avoiding public network virus interference. The system is closed-source, boots in seconds, and is not based on Android.
2) Dual-chip storage for data backup, with a capacity of 60,000 to 120,000 records. Full voice prompts (adjustable volume and option to mute). The main unit features a 7-inch touch color display with adjustable backlight brightness (touchscreen functionality allows all operations to be performed via the screen).
3) Standard audio interface for external speakers; includes charging indicator and USB insertion indicator lights.
4) Equipped with ≥2 USB ports; standard built-in imaging QR code and barcode scanner (for quick input of tester information); optional built-in non-contact IC card and ID card functionality; supports USB interface barcode scanner for rapid data entry; supports mechanical key input for test numbers (also supports full keyboard input via touchscreen for alphanumeric test IDs); standard U port for batch import of tester information to enable quick "roll call testing"; incremental function for convenient and fast data entry during test number input.
5) Menu-driven interface with WYSIWYG (What You See Is What You Get) operation, full voice prompts (adjustable volume and output) for user-friendly operation, requiring minimal training. Operators cannot delete test data; only administrators have data management privileges to ensure data security.
6) Data networking via fully wireless means, supporting real-time or batch transmission, using 2.4G communication (for long-range, large-scale networking). High-power, high-frequency wireless communication modules offer long transmission distance, strong diffraction and penetration capabilities, and large network capacity. Wireless communication forms a closed-loop self-organizing local area network, avoiding public network virus interference. Experimental transmission distance of the 2.4G module reaches up to 2 kilometers in open areas.
7) Silicone keys with long service life, designed in a 4x5 matrix (20-key multifunction layout). Tested for over 100,000 cycles for durability and fatigue resistance, ensuring key labels remain clear and intact. Anti-slip design prevents finger slippage and miskeying.
8) Supports dual power sources: DC/AC; built-in high-capacity lithium battery provides over 10 hours of continuous operation, with real-time battery level display on the screen.
9) Universal main unit allows users to select and instantly pair with any peripheral via menu keys and touchscreen, enhancing versatility and reliability. The main unit operates without a computer connection and can switch between any test items without modifying the main program. All peripheral communication uses the ANT 2.4G protocol.
10) Test result data can be quickly exported via USB drive and imported into physical test data management software on a PC (avoiding long waits for batch uploads and enabling data collection even when the PC is not near the device).