iBodyinfo BCM-MF570 Body Composition Module Technical Specifications (V1.1)

This document provides the official technical specifications for the iBodyinfo BCM-MF570 V1.1 Body Composition Analyzer Module. For your convenience, we recommend downloading the complete PDF version.

BCM-MF570_Module_Technical_Specifications_V1.1.pdf

1. Module Overview

The BCM-MF570 is a core measurement module custom-designed for “Body Composition Analyzers.” It enables the most critical functions of such devices, including weight measurement, human impedance measurement, body composition analysis, and overall physical assessment. The module also features a height measurement interface for easy integration of an ultrasonic sensor via a TTL serial port for automatic height acquisition. By integrating this module with a display and enclosure, developers can rapidly create a variety of professional body composition analysis devices.

Version Differences (V17 & V17-2)

The BCM-MF570 is available in two hardware versions, differing primarily in the communication port’s electrical standard and default baud rate to suit various system integration needs.

• V17 Version: The communication port uses RS232 level signaling, with an on-board RS232 level shifter IC. The default baud rate is 19200.

• V17-2 Version: The communication port uses TTL 3.3V level signaling, suitable for direct connection to a microcontroller’s (MCU) IO pins. The default baud rate is 9600.

2. Interface Descriptions

[Place Main Interface Diagram Here]

• Filename: ibodyinfo-bcm-mf570-interface-connection-diagram.webp
• Alt Text: Interface connection diagram for the iBodyinfo BCM-MF570 module, labeling the ports for impedance, load cell, communication, and power.

2.1 Communication Interface

Depending on the module version, a 3-wire serial port with either RS232 or TTL levels is provided. All measurement commands and results are transmitted through this interface.

2.2 Load Cell Sensor Interface

The module integrates a high-precision load cell interface for connecting an external 4-wire parallel beam sensor, providing a robust and accurate foundation for the system’s weight measurement capabilities.

Interface Driving Capability

• Excitation Voltage: 3.3V
• Max Driving Current: 20mA
• A/D Resolution: 24 bit

Recommended Sensor Application Parameters

• Capacity Range: 150, 200, 250, 300 Kg
• Recommended Platform Size: 400×400 mm
• Typical Applications: Widely used in electronic price computing scales, weighing scales, and body composition analyzer platforms.

Recommended Sensor Technical Specifications

2.3 Impedance Measurement Interface

For connecting 8 electrodes to perform 5-segment, quad-frequency measurements.

• Measurement Method: 8-Electrode, 5-Segment, Quad-Frequency (5/50/250/500KHz)
• Impedance Resolution: 0.1 Ω
• Impedance Measurement Error (Post-calibration for V17):
  • Limbs: ≤ ±1%
  • Trunk (15-35Ω): ≤ ±5%
  • Trunk (10-15Ω): ≤ ±10%

2.4 Power Interface

• Input Voltage: DC 5V ±10%
• Input Current: < 600mA

2.5 Shipping Firmware Version

• BCM_APP_GD_570V15V17-08034225.bin

3. Performance & Technical Specifications

3.1 Operating Environment

Recommended for use in general home and office environments. Avoid proximity to strong sources of electromagnetic interference, such as high-power motors.

3.2 Measurement Principle

Multi-frequency Bioelectrical Impedance Analysis (BIA).

3.3 User Input Parameters

• Gender: Male / Female
• Age: 8 – 80 years
• Height: 80 – 230 cm
• Weight: 20 – 200 Kg

3.4 Measurement Output Metrics

• Raw Data: Can output 20 raw impedance values from 5 segments (left arm, right arm, trunk, left leg, right leg) across 4 frequencies.
• Weight Measurement: Range 5-200Kg, with an accuracy of ±0.1Kg.

3.5 ESD Characteristics

4. Module Application & Protocol

4.1 Usage Instructions

The module provides a 3-wire serial port interface. An external circuit only needs to supply 5V power and a serial connection to perform all control and data retrieval operations.

4.2 Firmware Update

The module’s firmware can be upgraded via the serial port using the standard Ymodem transfer protocol, allowing for continuous algorithm and feature enhancements.

5. Dimensions

• Module Size: 184.15 × 106.68 mm
• Mounting Hole Spacing: 167.64 × 96.52 mm

6. Application Reference

The BCM-MF570 module is the ideal core for building professional stand-on body composition analyzers.

7. Technical Support

• Contact: Mr. Li (Engineer)
• Phone: +86 18344460909
• WhatsApp: 8618344460909