Sensor Posisi Jarak Position Displacement Sensor TUJUAN Memahami

Sensor Posisi & Jarak Position & Displacement Sensor TUJUAN : Memahami klasifikasi sensor displacement & posisi Memahami prinsip kerja sensor displacement & posisi Memahami aplikasi sensor displacement & posisi

Sensor Posisi & Jarak Position & Displacement Sensor the difference between the initial position and the final position of an object Displacement Position #1 Position #2

Pengukuran Displacement § § § § § Position Velocity Acceleration Stress Force Pressure Proximity Thickness …. 3

Besaran Fisik Terukur 1. Resistive displacement sensor 2. Inductive displacement sensor 3. Capacitive displacement sensor 4. Eddy Current displacement sensor 5. Piezoelectric displacement sensor 6. Ultrasonic displacement sensor 7. Magnetostrictive displacement sensor 8. Optical encoder displacement sensor 9. Strain Gages displacement sensor 10. …. 4

Piranti Sensor Posisi & Displacement • • Potensiometer TX-RX Infra Red Ultrasonics range finder Limit Swich Kompas elektronik Kamera Shaft encoder 5

Potentiometer Resistive Disp. Sensor 6

Potentiometer Resistive Disp. Sensor § An electrically conductive wiper that slides against fixed resistive element § Potentiometer digunakan untuk konfigurasi pembagi tegangan § Tegangan diaplikasikan pd ujung resistor. § Tegangan keluaran proporsional dng perpindahan 7

Potentiometer Resistive Disp. Sensor Macam Konstruksi Potentiometer 8

Potentiometer Resistive Disp. Sensor Model Pergerakan 9

Potentiometer Resistive Disp. Sensor § Turn counting potentionmeter dial § Linear motion § Multi turn potentiometer 10

Potentiometer Resistive Disp. Sensor Kelebihan Mudah digunakan Harga murah Wide Amplitude output Proven technology Passive Kekurangan Bandwidth terbatas Frictional loading Inertial loading Wear 11

Potentiometer Resistive Disp. Sensor § Parameter penting yg hrs diperhatikan : þSuhu operasi þShock & vibrasi þKelembaban þKontaminasi & seals 12

Potentiometer Resistive Disp. Sensor 13

Potentiometer Resistive Disp. Sensor 14

TX – RX Infra Red Optical Disp. Sensor 15

TX – RX Infra Red Optical Disp. Sensor 16

TX – RX Infra Red Optical Disp. Sensor 17

Ultra-Sonic Ultrasonic Disp. Sensor 18

Limit Switch Limit Disp. Sensor 19

Electronic Compass Magnetic Disp. Sensor Hitachi HM 55 B Compass Module Disnmore ECD 1490 HMR 3000 – by Honeywell Vector 2 X 20

Electronic Compass Magnetic Disp. Sensor 21

Aplikasi PSD 22

Optical Disp. Sensor Optical Encoder. Sensor 23

Shaft Encoder 24

Inductive displacement sensor § Self generating type þKetika ada gerak relatif antara konduktor & medan magnet tegangan diinduksi pd konduktor § Passive type þMemerlukan sumber tenaga eksternal 25

Inductive displacement sensor v. Terdiri dari rangkaian magnetik yg terbuat dari inti ferromagnetic dengan koil yg melilitnya v Koil bekerja sebagai sumber gaya gerak magnet yg membawa flux melalui rangkaian magnet dan gap udara v Reluktansi rangkaian meningkat flux menurun 26

Inductive displacement sensor § Linear Variable Differential Transformer (LVDT) 27

Inductive displacement sensor § Gerak inti magnet mengubah induktansi koil sekunder menuju koil primer § Tegangan koil primer : Vssin( t) § Induksi emf koil sekunder § Ketika koil pada posisi tengah § Ketika koil tdk berada di tengah 28

Inductive displacement sensor 29

Capacitive displacement sensor 30

Capacitive displacement sensor 31

Capacitive displacement sensor Differential capacitive sensor 32

Capacitive displacement sensor CATATAN : § Pengukuran displacement untuk gerak rotasi atau translasi § Dapat digunakan pada suhu tinggi dan rendah § Juga digunakan untuk mengukur tekanan § Kondenser mikrofon mengukur perubahan tekanan udara dari gelombang suara yg datang 33

CCD(Charged Coupled Discharge) 34

Kesimpulan § § § Resistive displacement sensor Inductive displacement sensor Capacitive displacement sensor 35