Speed measurement can be done by analog and digital way. In general, the measurement of speed is divided into two ways, namely: angular way and way of translation. To measure the translational velocity can be derived from the angular measurement method. What is meant by angular measurement is the measurement of rotational speed (rotation), while the measurement of translational velocity ...
Read More »Dioda Sebagai Sensor Temperatur
Dioda dapat pula digunakan sebagai sensor temperatur yaitu dengan memanfaatkan sifat tegangan junction Dimanfaatkan juga pada sensor temperatur rangkaian terintegrasi (memiliki rangkaian penguat dan kompensasi dalam chip yang sama). Contoh rangkaian dengan dioda sebagai sensor temperature Contoh rangkaian dengan IC sensor Rangkaian alternatif untuk mengubah arus menjadi tegangan pada IC sensor temperature Gambar 3.22 Rangkaian peubah arus ke tegangan untuk ...
Read More »Inductive Sensors and Electromagnets
Inductive sensors utilize inductance change • as a result of the movement of a ferromagnetic core within the coil • due to an approaching ferromagnetic material The position sensor Figure 3.26: (a) Core shifted flat (b) Core I bergser spin (c) The series of variable inductance Reader circuit inductance change • two inductors arranged in a bridge circuit, one as ...
Read More »Fluid Flow Sensor
Flow measurements began to be known since 1732 when Henry Pitot regulated the amount of fluid flowing. In fluid measurements it is necessary to determine the amount and vector of the flow velocity at a point in the fluid and how the fluid changes from point to point. Measurement or censorship of fluid flow can be classified as follows: 1. ...
Read More »Sensor Induktif dan Elektromagnet
Sensor induktif memanfaatkan perubahan induktansi • sebagai akibat pergerakan inti feromagnetik dalam koil • akibat bahan feromagnetik yang mendekat Gambar 3.26 Sensor posisi: (a) Inti bergeser datar (b) Inti I bergser berputar (c) Rangkaian variable induktansi Rangkaian pembaca perubahan induktansi • dua induktor disusun dalam rangkaian jembatan, satu sebagai dummy • tegangan bias jembatan berupa sinyal ac • perubahan induktasi ...
Read More »Silicon Pressure Transducer
– utilizing silicon as a measuring material and diaphragm, the circuit can be integrated – more sensitive than metal because strain (displacement) and piezoresistive properties appear together – always use 4 gauge in bridge, problem faced gauge is not identical very sensitive to temperature – alternative solutions: excitation current bridge voltage compensation amplifier amplification compensation Figure 3.53 Straingage piezoresistif: (a) ...
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