Horse Movement Monitoring Overview

flux

Project Overview
This design is a chest-mounted wearable module for monitoring body movement using a Bosch BHI160B 6-axis sensor over I²C. Key elements include:
  • Power & Decoupling
    • 3.3 V input via the +3V3 net portal
    • Three decoupling caps: C1, C2 on VDD, and C3 on the internal VREG
  • Sensor
    • U1: BHI160B 6-axis IMU (accelerometer + gyroscope)
  • I²C & AUX Interfaces
    • Main I²C (SDA/SCL) exposed on the 4-pin connector J1
    • Sensor-hub AUX SDA/SCL exposed on the 6-pin header J2
    • Pull-ups: R1 & R2 on AUX lines
  • Address Selection
    • Address-select network using R3 & R4 on the SEL_ADR pin
Limitations for Chest-Mounted Equine Monitoring
  • Lack of On-Board Power Source
    Requires an external 3.3 V supply—no integrated battery or regulator is provided.
  • No Wireless or Data Logging
    All data must be read via wired I²C; there’s no microcontroller, flash memory, or radio on-board.
  • Mechanical & Environmental Protection
    No enclosure, waterproofing, or shock-proofing; raw PCB may not withstand sweat, mud, or impact during riding/galloping.
  • Orientation & Mounting Sensitivity
    Without a defined housing or alignment jig, sensor orientation may vary, complicating consistent motion analysis.
  • Accelerometer Range & Bandwidth
    The BHI160B’s built-in ±16 g range and its sampling rate may not capture very high-impact events without saturation or aliasing.
  • No Input/ESD Protection
    I/O lines are exposed directly—no TVS diodes or series protection, risking damage from static or voltage spikes.
  • Thermal & Calibration Drift
    No temperature sensor or compensation network; prolonged exposure to outdoor conditions could introduce measurement drift.
  • No Filtering Beyond Decoupling
    High-frequency noise on I²C lines or sensor outputs may require additional RC or ferrite filtering for cleaner data.
Select LiPo charger
Add ESD protection
Include data logging
Add wireless module
Choose microcontroller
Sign up to send

To get started, talk to Flux or create a New Document.

Documents

    Documents are markdown text files which describe project goals, capture details, or even simulation outputs.

    Assets

    Wearable Accelerometer BHI160B Template image.png

    Wearable Accelerometer BHI160B Template image.png

    Wearable Accelerometer BHI160B Template imageThumbnail

    Wearable Accelerometer BHI160B Template

    Wearable Accelerometer BHI160B Template thumbnail
    This project is a Wearable Accelerometer based on BHI160B sensor with an I2C interface. The design includes decoupling capacitors and pull-up resistors for signal integrity. It's powered by a 3.3V supply. #wearables #referenceDesign #project #sensor #accelerometer #BHI160B #referenceDesign #imu #stm #template #reference-design

    Properties

    creativecommons.org/licenses/by/4.0/

    Pricing & Availability

    Distributor

    Qty 1

    Controls