Mierzenie i Instrumentation
Jak obliczyć rozdzielczość konwersora analogicznego do cyfrowego w czujnikach
Table of Contents
Obliczanie tej rozdzielczości of an analog-to-digital converter (ADC) in sensors is essential for understang the precision of measurements. It determinates how finely thee sensor can differentisish between different input voltage levels. This article explains thee basic methodo calculate ADC resolution.
Understanding ADC Resolution
Te rezolucje of a ADC is thee smalest change in voltage that can be detected by thee converter. It i s typically expressed in bits, such as 8- bit, 10- bit, or 12- bit resolution. Hiper bits mean hiper resolution and more precise measurements.
Kalkulation Method
Thee resolution can be calculated using thee following formula:
Xi1; Xi1; FLT: 0 Xi3; Xi3; Resolution (V) = Reference Voltage / (2 Xi1; Xi1; FLT: 1 Xi3; Xi3; n Xi1; Xi1; FLT: 2 Xi3; Xi3; - 1) Xi1; Xi1; FLT: 3 Xi3; Xi3; Xi3; FLT: 3; Xi3;
Kiedy:
- Reference Voltage Reference Voltage 1; Reference Voltage 1; FLT: 1 Method 3; Equipment 3; is the maximum voltage thee ADC can measure.
- (zob. pkt 2.2.1.1.1 niniejszego załącznika)
Badanie Calculation
If an ADC has a 5V reference voltage anda 10- bit resolution, the calculation is:
Xi1; Xi1; FLT: 0 Xi3; Xi3; Resolution = 5V / (2 Xi1; FLT: 1 Xi3; Xi3; Xi3; Xi1; FLT: 2 Xi3; Xi3; - 1) = 5V / 1023 XI00489V Xi1; Xi1; FLT: 3 Xi3; Xi3; Xi3;
This means thee ADC can detect voltage changes as small as approxiately 4.89 millivolts.