Nnyinasosɛm a ɛfa tumi sensor ho no fa tumi parameters te sɛ current ne voltage a wɔdannan no ma ɛyɛ anyinam ahoɔden nsɛnkyerɛnne a wotumi susuw, na wonya parameters a wɔhwehwɛ no denam processing so. Nea edidi so yi yɛ anammɔn a ɛkɔ akyiri-denam{2}}Anamɔn so nkyerɛkyerɛmu a ɛfa ne nnyinasosɛm a ɛyɛ adwuma ho no so:
1. Mprempren Nnyinasosɛm Nnyinasosɛm .
Shunt resistor method : Ɛdenam-resistance resistor (shunt) a ɛba fam a wɔde bɛka abom so no, wɔsusuw voltage a ɛwɔ resistor no so no. Ɛyɛ nea ɛfa DC anaa Low-frequency AC a wɔde Ohm mmara di dwuma ho, nanso current kɛse betumi ama ɔhyew aba.
Hall Effect Sensor: Magnetic field a ɛtwa current-soa conductor no ho hyia no yɛ nea wɔde di dwuma ma asa no element no ma voltage a ɛne current no hyia na ama wɔanya non{1}}nkitahodi susudua. Ɛyɛ nea ɛfa AC/DC ho na ɛwɔ tew a ɛtew ne ho yiye.
current transformer (CT): Ɛgyina electromagnetic induction so, ɛdane current kɛseɛ a ɛwɔ primary side no kɔ current ketewa bi mu wɔ secondary side. Ɛyɛ nea ɛfa AC susudua nkutoo ho.
ROGOWSKI COIL: Toroidal coil a enni magnetic core. Ɛde voltage bi ba denam current change rate a ɛma ɛba no so na ɛnya current no wɔ integration akyi. Ɛfata ma soro-frequency anaa soro-mprempren AC tebea horow na ɛwɔ anti-saturation tumi a emu yɛ den.
2. volutage susudua nnyinasosɛm .
Resistor voltage divider method : Ɛnam series resistor voltage divider network so no, wɔma ahoɔden a ɛkorɔn no kɔ fam na wɔsusuw. High-precision, low-Ɔhyew drift resistors na ɛho hia.
voltage transformer (PT): Ɛte sɛ CT, ɛdan ahoɔden a ɛkorɔn ma ɛyɛ ahoɔden a ɛba fam na ɛfata ma AC nhyehyɛe.
CAPACITOR voltage divider kwan: Wɔde capacitor voltage divider na ɛsusu voltage a ɛkorɔn, a ɛtaa ba wɔ soro-frequency anaa pulse voltage scenarios.
3. Nsɛnkyerɛnne a wɔde yɛ adwuma ne nea wɔyɛ .
Amplification and Filtering .Fa Operational Amplifiers di dwuma ma nsɛnkyerɛnne a ɛyɛ mmerɛw no yɛ kɛse na fa-twa filters no mu de yi dede a ɛkorɔn-dede no fi hɔ.
Ph{1}}Digital Conversion (ADC): Dane analog nsɛnkyerɛnne kɔ digyital nsɛnkyerɛnne so, na ɛsɛ sɛ sampling rate no hyia Nyquist theorem (anyɛ yiye koraa no, frequency a ɛkorɔn sen biara a ɛwɔ nsɛnkyerɛnne no mu no mmɔho abien).
4. Tumi a wɔde susuw nneɛma .
Sampling instantaneous voltage ne current bere koro no ara mu, bɔ no mmɔho abien na ama wɔanya tumi a ɛwɔ hɔ ntɛm ara no, na wɔde abɔ mu na ama wɔanya tumi a ɛyɛ adwuma no sɛ wɔkyekyem pɛpɛɛpɛ a. Wɔ abiɛsa-Phase nhyehyɛe mu no, wobetumi de abien-meter kwan no anaa abiɛsa-meter kwan no adi dwuma de abu tumi a ɛwɔ hɔ nyinaa ho akontaa.
5. tew ne ho tew ne ahobammɔ .
Magnetic Isolation: Fa mutual inductors anaa magnetic coupling devices di dwuma de yi circuits a ɛkorɔn ne nea ɛba fam no fi mu.
Optical isolation: Fa nsɛnkyerɛnne fa optical coupling so de siw anyinam ahoɔden nkitahodi ano.
Fibre optic mfiridwuma: Fa Faraday effect no susuw current, a ɛwɔ insulation adwumayɛ a ɛkyɛn so, a ɛfata ma high voltage environments.