tg-me.com/Ixtirolar_arduino/2350
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HC-SR04 Ultrasonic sensor haqida
Sensorda quyidagi 4 ta pin mavjud:
1. VCC – 5V kuchlanish manbasi
2. Trig – Trigger signali (kirish)
3. Echo – Javob signali (chiqish)
4. GND – Yer (ground)
Ishlash prinsipi:
1. Trig pin orqali 10 mikrosekundlik HIGH signal yuboriladi
2. Sensor ultratovush to‘lqinini chiqaradi (40 kHz chastotada)
3. To‘lqin ob’ektga tegib qaytgach, Echo pin HIGH bo‘ladi
4. Echo pin HIGH bo‘lib turgan vaqt — to‘lqinning borib kelish vaqti
5. Ushbu vaqt asosida masofa hisoblanadi:
\text{Masofa} = \frac{\text{Vaqt} \times \text{To‘lqin tezligi (340 m/s)}}{2}
HC-SR04 Texnik xususiyatlari:
Xususiyat Qiymat:
Ishlash kuchlanishi 5V DC
Ishlash toki ~15 mA
Ishlash chastotasi 40 kHz
O‘lchash diapazoni 2 sm – 400 sm (4 m)
O‘lchash aniqligi ±3 mm
Sensor o‘lchami ~45mm x 20mm x 15mm
Diqqat: Sensor tekis va qattiq yuzalardan yaxshi aks-sado qaytaradi. So‘ruvchan (masalan, mato) yoki notekis (masalan, g‘ovak) yuzalarda natija aniq bo‘lmasligi mumkin.
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BY Ixtirolar arduino || robototexnika
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