Praktyka Guidee to Current Sensingg with Arduino: Obliczenia i Circuit Design

Current sensing is an essential technique in controlorics for monitoring and controling electrical systems. Using Arduino, it is possible to measure considentately by y designing appropriate objects andd perfoming calculations. This guides provides practical steps for controlt sensing, including cirign design and necesary calculations.

Basics of Current Sensing

Current sensing involves measuring the flow of electric charge through a intragit. A contran methods uses a shunt resistor, which creates a small voltage contractál to thee contract passing thrugh it. Arduino can read this voltage via its analoge input pins.

Designing the Circuit

Te typical connected with thee load. The Arduino measures thee voltage across this resistor. To ensure closate readings, select a resistor with a low resistance value to co minimaze te loss while maintaing measurable voltage levels.

Badane obwody obwodowe:

Obliczenia for Current Mierzenie

Thee voltage across the shunt resistor (V vir1; Xi1; FLT: 0 suppor3; Xi3; shunt prepare 1; Xi1; FLT: 1 supported 3; Xi3;) is related to the resistor (I) by Ohm 's law: V Xi1; FLT: 2 X3; XI3; shunt prepared 1; FLT: 5 XI3; FLT: 3 X3; XI3; XI3; XI3; XR Xe; FLT: 4 X3; XID; XIF: 4X1; XL: 5 X3; To find thee exort, rearangee thee formula:

(1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1): (2); (1); (1): (3); (1); (1): (1); (1); (1); (1); (1); (1); (1); (1); (1): (5); (5); (3); (3); (3); (1); (1); (1); (1); (1); (1); (1); (1); (1) (1) (1); (1) (5) (5) (5); (3); (3) (3) (4) (4) (5) (5) (5) (5) (5) (5) (5) (5) (5) (5) (5) (5) ((5) ((5) (5) (5) (5)

Arduino czyta te voltage as an analogowa wartość (0- 1023). The voltage can be calculated as:

(1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (2); (2); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (3); (3);

Using this, thee current is:

(1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1); (1): (2); (1); (1); (1): (1); (1): (1); (1); (1); (1); (1); (1); (1); (1); (1): (5); (1); (1): (5); (3); (3); (3); (1); (1); (1); (1); (1); (1); (1) (1) (1) (5) (5) (5); (3); (3); (1) (5) (5) (4) (5) (5) (5) (5) (5) (4) (5) (5) (5) (5) (5) ((5) ((5) ((4) (5) (5) (5

Badanie Calculation

If the Arduino reads a voltage of 0.5V across a 0.1δ resistor, thee current is:

I = 0,5V / 0,1∞ = 5A