1 Pertemuan 6 Signal conditioning Matakuliah: H0262/Pengukuran dan Instrumentasi Tahun: 2005 Versi: 00/01.

Presentasi berjudul: "1 Pertemuan 6 Signal conditioning Matakuliah: H0262/Pengukuran dan Instrumentasi Tahun: 2005 Versi: 00/01."— Transcript presentasi:

1 1 Pertemuan 6 Signal conditioning Matakuliah: H0262/Pengukuran dan Instrumentasi Tahun: 2005 Versi: 00/01

2 2 Learning Outcomes Pada akhir pertemuan ini, diharapkan mahasiswa akan mampu : Mahasiswa dapat menjelaskan signal conditioning

3 3 Outline Materi Materi 1 : Metode jembatan Materi 2 : Design reactive bridge Materi 3 : Instrumen amplifier Materi 4 : Milivolt converter

4 Metode Jembatan. Signal Conditioning Gb 6.1 Jembatan AC. 0

5 E TH = V S - Z1Z1 Z2Z2 Z 1 + Z 4 Z 2 + Z 3 ( ) Z TH = + Z 2 + Z 3 Z2Z3Z2Z3 Z1Z4Z1Z4 Z 1 + Z 4 0

6 6 v(x) = Tegangan output jembatan : E TH = V S ( - ) R 1 + R 4 R1R1 R 2 + R 3 R2R2 Tegangan output single elemen jembatan strain gauge : E TH = ¼ V S G e. X-1 2 ( x+1 ) ¼ (x-1)  0

7 7 Gb 6.2 Termometer bridge Output voltage two elemen jembatan resistance thermometer. 0

8 8 E TH = V S R0R0 R3R3 (T 1 – T 2 )  Gb 6.3 kondisi dan karakteristik jembatan termistor. 0

9 9 Titik O  0= V S (- ) 11 1+ R 4 /R 298 1+R 3 /R 2 Titik Q  0,5 = V S ( ) 1+R 3 /R 2 1 1 1+ R 4 /R 323 - 0

10 10 Design reactive bridge. Gb 6.4 Reactive bridge. 0

11 11 E th = V S ( ) - 11 1+R 3 /R 2 1+ C min R 3 / CR 2 Tegangan output capacitance pushpull bridge E TH = V s x / 2d. 0

12 12 Tegangan output inductive pushpull bridge: E TH = VsVs 2(1+  a) X Amplifier. inverting amplifier Non inverting amplifier Differential amplifier Integrator amplifier Summing amplifier 0

13 13 Instrument Amplifier. Gb 6.5 Penguat Instrumentasi 0

14 14 V out = K ( V 2 – V 1 ) CMRR = A ol A CM Osilator. Gb 6.6 prinsip osilator. 0

15 15 | G(jw) || H(jw) | = 1. arg G(jw) + arg H(jw) = -180º. 0

16 16 Milivolt converter. Gb 6.7 milivolt converter 0

17 17 I = 1/ R S [ E T1,0 + V S ] Inspeksi gambar milivolt converter lebih akurat memberikan hasil persamaan arus : I = K 1+KR S [ E T1,0 + V S ] dimana KR S  1. 0

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