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DYP-H03 Commercial-Grade Ultrasonic Height and Distance Measurement Module, 3-250cm Range with Temperature Compensation and UART Output
The DYP Sensor H03 is a commercial-grade ultrasonic range-finder module designed specifically for height measurement applications, including human-body height measurement and level-distance sensing. It uses a 40kHz ultrasonic transducer paired with a high-performance processor to deliver stable, repeatable distance readings across a 3-250cm range.
The H03 is built around reliability and long-term accuracy. An on-board temperature compensation function automatically corrects for thermal deviation, maintaining stable ranging across an operating temperature range of -10C to +50C. This makes the module well-suited for real-world deployments where ambient temperature fluctuates across the day or across seasons.
With a 3cm dead-band for flat objects and a measurement accuracy of 1cm at room temperature, the H03 provides millimetre-class resolution for height-critical use cases such as intelligent altimeters and hand-held height measurement instruments. The stable detection range for human-head height measurement is 10-120cm, optimised for upright standing-height detection in medical, fitness, and access-control systems.
The module communicates over a UART interface, simplifying integration with microcontrollers and embedded systems. Electrostatic protection on all I/O pins, compliant with IEC 61000-4-2, ensures the module operates reliably in environments with electrostatic discharge risk. RoHS-compliant construction supports global regulatory requirements. The compact, lightweight form factor is designed for easy integration into OEM instruments and custom projects.
Key Features
- Measurement Range: Detects distances from 3cm to 250cm, with a stable human-head detection range of 10-120cm.
- High Accuracy: Measurement accuracy of 1cm at room temperature; flat-object accuracy of +(1 + S x 0.3%), where S is the measuring range in cm.
- High Repeatability: Repeat measurement stability better than 5mm under consistent conditions.
- 3cm Dead-Band: Minimum blind zone of 3cm for flat objects, enabling close-range detection with reliable readings.
- Temperature Compensation: On-board automatic temperature correction maintains ranging accuracy from -10C to +50C without manual calibration.
- 40kHz Ultrasonic Sensing: Uses a 40kHz ultrasonic transducer for stable, interference-resistant distance measurement across most solid and human-body targets.
- UART Output Interface: Single-wire serial communication for straightforward integration with microcontrollers, SBCs, and embedded platforms.
- Low Power Consumption: Average operating current of 10mA or less, suitable for battery-powered and low-power embedded designs.
- ESD Protection: All I/O pins are fitted with electrostatic protection devices, compliant with IEC 61000-4-2 for robust field deployment.
- Compact and Lightweight: Small form factor designed for easy integration into hand-held instruments, kiosks, and OEM measurement products.
- RoHS Compliant: Meets international restrictions on hazardous substances for global market compatibility.
Applications
- Human-Body Height Measurement: Measures standing height in medical clinics, fitness centres, pharmacies, and access-control kiosks with a stable detection range of 10-120cm to the human head.
- Intelligent Altimeters: Core sensing module for smart, standalone height-measurement instruments requiring accurate and temperature-stable readings.
- Hand-Held Height Measurement Devices: Compact size and low power consumption make it well-suited for portable, battery-operated height gauges used in field or clinical settings.
- Level and Distance Sensing: Measures liquid levels, object height, or surface distance in industrial tanks, bins, and conveyor systems within the 3-250cm range.
- Object Proximity Detection: Detects the presence and distance of flat or rounded objects on production lines, dispensers, and automated equipment.
- Access Control and Visitor Management Systems: Provides height data for automated entry systems that log or screen individuals based on physical measurements.
- Robotics and Autonomous Systems: Supplies short-range distance data for obstacle detection and height-aware navigation in mobile robots and guided vehicles.
- Educational and Research Prototypes: Integrates easily into Arduino, Raspberry Pi, and similar platforms for distance-sensing experiments and custom measurement tools.
