DFRobot_PAV3000

• 中文版

This is a driver library for an air velocity sensor.

Product Link (https://www.dfrobot.com)

SKU: NULL

Table of Contents

• Summary
• Installation
• Methods
• Compatibility
• History
• Credits

Summary

This is a driver library for an air velocity sensor.

Installation

To use this library, first download the library file, paste it into the \Arduino\libraries directory, then open the examples folder and run the demo in the folder.

Methods

    /**
     * @fn setRange
     * @brief Set the airflow detection range and initialize calibration data.
     * @details This function configures the sensor for either 7 m/s or 15 m/s range.
     *          It loads the appropriate calibration data points for linear interpolation.
     *          The calibration data consists of raw ADC values and corresponding 
     *          velocity measurements at specific points.
     * @param range AIRFLOW_RANGE_7_MPS: PAV3000_1005 (0-7.23 m/s), 
     *              AIRFLOW_RANGE_15MPS: PAV3000_1015 (0-15 m/s)
     * @return 1: Setting successful, 0: Setting failed (I2C communication error)
     */
    uint8_t setRange(uint8_t range);

    /**
     * @fn readRaw
     * @brief Get the raw data from the sensor.
     * @return Raw data from the PAV3000 register.
     */
    uint16_t readRaw(void);

    /**
     * @fn readMeterPerSec
     * @brief Get the airflow velocity in meters per second using linear interpolation.
     * @details This function implements a linear interpolation algorithm to convert
     *          raw ADC values to velocity measurements. The algorithm works as follows:
     *          1. Read raw ADC value from sensor
     *          2. Check if value is within valid range (409-3686)
     *          3. Find the calibration data points that bracket the raw value
     *          4. Calculate the percentage position within the bracket
     *          5. Apply linear interpolation: velocity = v1 + (v2-v1) * percentage
     * @return Airflow velocity in m/s, or 0.0 if sensor reading is invalid
     */
    float readMeterPerSec(void);

    /**
     * @fn readMilePerHour
     * @brief Get the airflow velocity in miles per hour (mph).
     * @return Airflow velocity data.
     */
    float readMilePerHour(void);

Compatibility

MCU	SoftwareSerial	HardwareSerial	IIC
Arduino Uno	X	X	√
Mega2560	X	X	√
Leonardo	X	X	√
ESP32	X	X	√
ESP8266	X	X	√
micro:bit	X	X	√
FireBeetle M0	X	X	√
Raspberry Pi	X	X	√

History

• 2024-12-02 - Version 1.0.0 released.

Credits

Written by TangJie([email protected]), 2025. (Welcome to our website)