Name: Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組
SKU: VMD-005358
Availability: InStock

-22%

Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組

Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組：圖片 7

Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組：圖片 8

Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組

0 out of 5

( 目前沒有評價。 )

原始價格：NT$367。目前價格：NT$285。 (未稅)

狀態: 尚有庫存貨號: VMD-005358 分類: 電壓 / 電流標籤: DFRobot, Digital Wattmeter, INA219, SEN0291, 數位功率計, 數位式功率感測

描述
評價 (0)

描述

Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組支援樹莓派與 Arduino

Gravity: I2C Digital Wattmeter 數位功率計是一款可測量26V 8A以內各類電子模塊、用電設備的電壓、電流和功率，最大相對誤差不超過±0.2%的高分辨、高精度、大量程測量模塊（使用前需進行一次簡單的手動校準）。可用於太陽能係統、電池庫侖計、電機、主控板或電子模塊的功耗測量、電池續航評估與實時電源參數在線監控。

Gravity: I2C Digital Wattmeter 數位功率計採用TI INA219零溫漂電流/功率監控芯片和2W大功率低溫漂10mΩ合金采樣電阻，電壓和電流分辨率分別可達4mV與1mA，在滿量程測量條件下，電壓與電流的最大測量相對誤差不超過±0.2%，並提供4個可通過撥碼開關配置的I2C地址。模塊可對雙向高側電流（流經電源或電池正極的電流）進行準確測量，這在太陽能或庫侖計應用，電池既需要充電，也需要放電的場合尤為有用，用戶可通過電流的正負讀數了解電池的充放電狀態，也可以了解電池的衝放電的實時電壓、電流與功率。在電機應用場景，可通過實時監控電機電流是否由於堵轉或負載過大導致電流過大，從而及時採取保護措施。此外，也可以使用該模塊測量各類電子模塊或整個項目的實時功耗，從而評估電池的續航時間。

特性

高精度、高分辨率、大量程、低溫漂
雙向電流高側測量
兼容3.3V/5V控制器
精緻小巧，方便項目嵌入

應用場景

太陽能係統
電池庫侖計
電子模塊功耗評估

技術規格

供電電壓(VCC)：3.3V ~ 5.5V
電壓量程（IN+或IN-相對GND）：0 ~ 26V
電壓分辨率：4 mV
電壓相對誤差：<±0.2%（典型值）
電流量程：0 ~ ±8A（可測雙向電流）
電流分辨率：1 mA
電流相對誤差：<±0.2%（典型值，需手動校準）
功率量程：0 ~ 206 W
功率分辨率：20 mW（硬件）/4mW（軟件）
靜態電流：0.7 mA
通信接口：Gravity I2C （邏輯電平0-3.3V）
I2C地址：4個，0x40，0x41，0x44，0x45（默認）
產品尺寸：30.0mm×22.0mm
重量：4g

接口說明

Gravity：I2C數字功率計引腳說明

引腳說明
標號	名稱	功能描述
1	VCC	電源正極（3.3~5.5V）
2	GND	電源負極
3	SCL	I2C時鐘線
4	SDA	I2C數據線
5	ADDR	I2C地址選擇撥碼開關
6	3P TERMINAL	電壓與電流測量接線柱3P

含 Arduino 範例與校正範例

/*!
   file getVoltageCurrentPower.ino
   SEN0291 Gravity: I2C Digital Wattmeter
   The module is connected in series between the power supply and the load to read the voltage, current and power
   The module has four I2C, these addresses are:
   INA219_I2C_ADDRESS1 0x40 A0 = 0 A1 = 0
   INA219_I2C_ADDRESS2 0x41 A0 = 1 A1 = 0
   INA219_I2C_ADDRESS3 0x44 A0 = 0 A1 = 1
   INA219_I2C_ADDRESS4 0x45 A0 = 1 A1 = 1
  
   Copyright [DFRobot](http://www.dfrobot.com), 2018
   Copyright GNU Lesser General Public License
   version V0.1
   date 2018-12-13
*/

#include <Wire.h>
#include "DFRobot_INA219.h"

DFRobot_INA219 ina219;

// Revise the following two paramters according to actula reading of the INA219 and the multimeter
// for linearly calibration
float ina219Reading_mA = 1000;
float extMeterReading_mA = 1000;

void setup(void) 
{
    Serial.begin(115200);
    while (!Serial) {
        delay(1);
    }

    Serial.println("Hello!");
    ina219.setI2cAddr(INA219_I2C_ADDRESS4); //Change I2C address by dialing DIP switch
    while(!ina219.begin(&Wire)){ //Begin return True if succeed, otherwise return False
        delay(2000);
    }
    ina219.linearCal(ina219Reading_mA, extMeterReading_mA);
    //ina219.reset(); //Reset all registers to default values
    
    Serial.println("Measuring voltage and current with INA219 ...");
}

void loop(void) 
{
    float shuntVoltage = 0;
    float busVoltage = 0;
    float current_mA = 0;
    float power_mW = 0;

    shuntVoltage = ina219.getShuntVoltage_mV();
    busVoltage = ina219.getBusVoltage_V();
    current_mA = ina219.getCurrent_mA();
    power_mW = ina219.getPower_mW();

    Serial.print("Bus Voltage: "); Serial.print(busVoltage,3); Serial.println(" V");
    Serial.print("Shunt Voltage: "); Serial.print(shuntVoltage,2); Serial.println(" mV");
    Serial.print("Current: "); Serial.print(current_mA,0); Serial.println(" mA");
    Serial.print("Power: "); Serial.print(power_mW,0); Serial.println(" mW");
    Serial.println("");

    delay(1000);
}

/*!

file getVoltageCurrentPower.ino

SEN0291 Gravity: I2C Digital Wattmeter

The module is connected in series between the power supply and the load to read the voltage, current and power

The module has four I2C, these addresses are:

INA219_I2C_ADDRESS1 0x40 A0 = 0 A1 = 0

INA219_I2C_ADDRESS2 0x41 A0 = 1 A1 = 0

INA219_I2C_ADDRESS3 0x44 A0 = 0 A1 = 1

INA219_I2C_ADDRESS4 0x45 A0 = 1 A1 = 1

version V0.1

date 2018-12-13

#include <Wire.h>

#include "DFRobot_INA219.h"

DFRobot_INA219 ina219;

// Revise the following two paramters according to actula reading of the INA219 and the multimeter

// for linearly calibration

float ina219Reading_mA = 1000;

float extMeterReading_mA = 1000;

void setup(void)

{

Serial.begin(115200);

while (!Serial) {

delay(1);

}

Serial.println("Hello!");

ina219.setI2cAddr(INA219_I2C_ADDRESS4); //Change I2C address by dialing DIP switch

while(!ina219.begin(&Wire)){ //Begin return True if succeed, otherwise return False

delay(2000);

}

ina219.linearCal(ina219Reading_mA, extMeterReading_mA);

//ina219.reset(); //Reset all registers to default values

Serial.println("Measuring voltage and current with INA219 ...");

}

void loop(void)

{

float shuntVoltage = 0;

float busVoltage = 0;

float current_mA = 0;

float power_mW = 0;

shuntVoltage = ina219.getShuntVoltage_mV();

busVoltage = ina219.getBusVoltage_V();

current_mA = ina219.getCurrent_mA();

power_mW = ina219.getPower_mW();

Serial.print("Bus Voltage: "); Serial.print(busVoltage,3); Serial.println(" V");

Serial.print("Shunt Voltage: "); Serial.print(shuntVoltage,2); Serial.println(" mV");

Serial.print("Current: "); Serial.print(current_mA,0); Serial.println(" mA");

Serial.print("Power: "); Serial.print(power_mW,0); Serial.println(" mW");

Serial.println("");

delay(1000);

}

Gravity: I2C Digital Wattmeter

INTRODUCTION

Gravity: I2C Digital Wattmeter is a high-resolution, high-precision, large-scale measurement module that can measure the voltage, current and power of various electronic modules and electrical equipment within 26V 8A, and the maximum relative error is no more than ±0.2% (A simple manual calibration is required before usage). It can be used for power consumption or battery life evaluation of solar energy systems, battery, motors, controller or electronic modules.

The module adopts TI INA219 zero temperature drift current/power monitoring chip and 2W high power low temperature drift 10mΩ alloy sampling resistor. The voltage and current resolution can reach 4mV and 1mA respectively. Under the full scale measurement condition, the maximum relative error of voltage and current measurement can be superior to ±0.2%. It also provides four I2C addresses that can be configured via the 2P DIP switch. The module accurately measures bi-directional high-side currents (current flowing through the power supply or battery positive), which is especially useful in solar or battery fuel gauge applications where the battery needs to be charged and discharged. This status can be simply determined by positive or negative current readings. In the motor applications, the current can be monitored in real time by monitoring whether the motor current is too large due to overload. In addition, you can use this module to measure the power consumption of various electronic modules or the entire project to evaluate battery life.

CONNECTION DIAGRAM

Gravity: I2C Digital Wattmeter Connection Diagram (Arduino UNO)

Gravity: I2C Digital Wattmeter Connection Diagram (Raspberry Pi 3B)

Measuring the power consumption of the Gravity: pH meter

Monitor the power consumption of the solar panel, battery and outputs of a solar system

FEATURES

High precision, high resolution, large range, low temperature drift
Bidirectional current high side measurement
Compatible with 3.3V/5V controller
Sophisticated and compact, easy to embed in the project

APPLICATIONS

Solar Power Management
Battery Fuel Gauge
Electronic Module Power Evaluation

SPECIFICATION

Input Voltage (VCC) : 3.3V~5.5V
Voltage Range (IN+ or IN- relative to GND): 0 ~ 26 V
Voltage Resolution: 4 mV
Voltage Relative Error: <±0.2% (Typical)
Current Range: 0 ~ ±8A (Bidirectional current)
Current Resolution: 1mA
Current Relative Error: <±0.2% (Typical, manual calibration required)
Power Range: 0 ~ 206 W
Power Resolution: 20 mW (Hardware) / 4 mW (Software)
Quiescent Current: 0.7 mA
Interface: Gravity I2C (logic level: 0-3.3V)
I2C Address: Four options 0x40, 0x41, 0x44, 0x45
Dimension: 30.0mm*22.0mm/1.18*0.87 in
Weight: 4g

DOCUMENTS

評價 (0)

商品評價

目前沒有評價。

搶先評價 “Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組” 取消回覆

你必須登入才能發表評論。

Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組

Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組

描述

描述

Gravity: I2C Digital Wattmeter 數位功率計 Arduino 數位式功率感測模組支援樹莓派與 Arduino

特性

應用場景

技術規格

接口說明