Forskjell mellom versjoner av «Evaluering i TFY4190 Instrumentering»
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− | I faget [[TFY4190 Instrumentering | Instrumentering]] består deler av evalueringen av en fire-timers prøve, der alle bøker samt Internett er tillatte hjelpemidler. I den forbindelse kan det være greit å ha en oversikt over nettsider med relevant informasjon. | + | I faget [[TFY4190 Instrumentering | Instrumentering]] består deler av evalueringen av en fire-timers prøve, der alle bøker samt Internett er tillatte hjelpemidler. I den forbindelse kan det være greit å ha en oversikt over nettsider med relevant informasjon. Linkene er forsøkt sortert slik [http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/Curriculum.pdf pensumlisten] er inndelt, enn hvor ulogisk den kan være. |
− | == Tall == | + | == Generelt == |
+ | * [http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/Curriculum.pdf Pensumliste våren 2007] | ||
+ | * [http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/repetisjonsoppgsvar.pdf Innsamlede svar på repetisjonsoppgaver våren 2007] | ||
+ | * [http://www.maxim-ic.com/glossary/ Glossary of Electrical Engineering Terms] | ||
+ | * [http://www.elfa.se/no/index1.html ELFA] | ||
+ | === Lab-oppgaver === | ||
+ | * [http://folk.ntnu.no/spreeman/itsnotlearning/TFY4190-2007V/lab_3.pdf Lab-oppgave 3] (PID-controller) | ||
+ | |||
+ | == Tall i datamaskiner == | ||
+ | * [http://en.wikipedia.org/wiki/Binary-coded_decimal Wikipedia: BCD] (Se "Packed BCD" for 8421-BCD) | ||
+ | * [http://en.wikipedia.org/wiki/Gray_code Wikipedia: Gray code] | ||
+ | * [http://www.asciitable.com/ ASCII-tabell] | ||
+ | * [http://www.easycalculation.com/hexa-decimal-binary.php Kalkulator mellom binære, hexadesimale og desimale tall] | ||
+ | === Flyttall === | ||
* [http://en.wikipedia.org/wiki/Floating_point Wikipedia: Floating point] | * [http://en.wikipedia.org/wiki/Floating_point Wikipedia: Floating point] | ||
− | * [http://en.wikipedia.org/wiki/IEEE_floating-point_standard Wikipedia: IEEE floating point standard] | + | * [http://en.wikipedia.org/wiki/IEEE_floating-point_standard Wikipedia: IEEE floating point standard] (Se avsnitt [http://en.wikipedia.org/wiki/IEEE_floating-point_standard#A_more_complex_example "A more complex example"] for fremgangsmåte) |
+ | |||
+ | === Representasjon av negative tall === | ||
+ | * [http://en.wikipedia.org/wiki/Exponent_bias Wikipedia: Exponent bias] | ||
+ | * [http://en.wikipedia.org/wiki/Two%27s_complement Wikipedia: Two's complement] | ||
+ | * [http://en.wikipedia.org/wiki/Signed_number_representations Wikipedia: Signed number representations] (Bl.a. one's complement) | ||
+ | |||
+ | == Støy == | ||
+ | * [http://en.wikipedia.org/wiki/Ground_%28electricity%29 Wikipedia: Ground] | ||
+ | * [http://en.wikipedia.org/wiki/Electronic_noise Wikipedia: Electronic noise] (Bl.a. liste over støytyper) | ||
+ | === Støytyper === | ||
+ | * [http://en.wikipedia.org/wiki/Shot_noise Wikipedia: Shot noise] | ||
+ | * [http://en.wikipedia.org/wiki/Johnson%E2%80%93Nyquist_noise Wikipedia: Johnson-Nyquist noise] (Termisk støy) | ||
+ | * [http://en.wikipedia.org/wiki/White_noise Wikipedia: White noise] | ||
+ | |||
+ | == Data-konvertering == | ||
+ | * [http://soundlab.cs.princeton.edu/learning/tutorials/sensors/node16.html Strøm til spenning ved bruk av inverterende op-amp] | ||
+ | * [http://www.hardwaresecrets.com/article/317 En bra introduksjon til AD-convertering] | ||
+ | === AD-convertere === | ||
+ | * [http://en.wikipedia.org/wiki/Analog-to-digital_converter Wikipedia: AD-converter] | ||
+ | * [http://www.allaboutcircuits.com/vol_4/chpt_13/4.html Flash-type AD-converter] (Se spesielt siste kretstegning som kraftig forenkler [[Northrop: Introduction to Instrumentation and Measurements | Northrop]] s. 618) | ||
+ | * [http://en.wikipedia.org/wiki/Successive_Approximation_ADC Wikipedia: Successive Approximation ADC] | ||
+ | * [http://www.allaboutcircuits.com/vol_4/chpt_13/9.html Delta-Sigma-ADC] | ||
+ | |||
+ | == Sampling == | ||
+ | * [http://www.ele.uri.edu/~hansenj/projects/ele436/fft.pdf FFT og spektralanalyse i Matlab] (siden Matlab er tilgjengelig) | ||
+ | * [http://soundlab.cs.princeton.edu/learning/tutorials/sensors/node22.html Sample and Hold] | ||
+ | * [http://en.wikipedia.org/wiki/Sample_and_hold Wikipedia: Sample and Hold] | ||
+ | * [http://en.wikipedia.org/wiki/Anti-aliasing Wikipedia: Anti-aliasing] | ||
+ | |||
+ | == Signaloverføring == | ||
+ | * [http://en.wikipedia.org/wiki/Characteristic_impedance Wikipedia: Characteristic impedance] | ||
+ | * [http://kom.aau.dk/~heb/kurser/felt-07/eloh01v4.ppt Eksterne forelesningsnotater om transmisjonslinjer] | ||
+ | |||
+ | == Diverse == | ||
+ | * [http://en.wikipedia.org/wiki/Thermocouple Wikipedia: Thermocouple] | ||
+ | * [http://en.wikipedia.org/wiki/Operational_amplifier_applications Wikipedia: Operational amplifier applications] (forskjellige op-amper) | ||
+ | |||
+ | == Flervalgsoppgaver == | ||
+ | Før evalueringen våren 2007 ble der lagt ut eksempeloppgaver. Under følger et utvalg av disse med svar. | ||
+ | |||
+ | *An anti-alias filter is | ||
+ | Placed berore the input to remove frequencies above the Nyquist limit | ||
+ | |||
+ | *The resolution of a DAC depends on | ||
+ | The number of bits | ||
+ | |||
+ | *A LabVIEW program gives the value of an integer as 65534. You know that this actually is a small negative number, but represented as an unsigned 16-bit integer. The small number is | ||
+ | -2 | ||
+ | |||
+ | *In addition to letters and numbers, the 7-bit ASCII code has codes for | ||
+ | Codes for communication control | ||
+ | |||
+ | *If the transfer function of a regulator has poles in the right half plane | ||
+ | The output will increase exponentially with time | ||
+ | |||
+ | *Suppose we have a small signal in the range 0 - 2 mV. It can be amplified by a factor of 1000. We have the choice of two AD converters, one 12 bit with range ± 10V and one 10 bit with range 0 - 5V. Which one has the best resolution? | ||
+ | They are equal | ||
+ | |||
+ | *Thermocouples need zero-point correction because | ||
+ | Their output gives the temperature difference between two junctions | ||
+ | |||
+ | *Shot noise has a frequency dependance that is called | ||
+ | White noise | ||
+ | |||
+ | *One of the following units is not used for magnetic fields: | ||
+ | Henry | ||
+ | |||
+ | *The transmission velocity of a signal on a coaxial line depends mainly on | ||
+ | The dielectric | ||
+ | |||
+ | *Which of these number representations have more than one representation for zero? | ||
+ | Sign + magnitude AND 1-complenent. (there is an error in the question, so it is removed from the test) | ||
+ | |||
+ | *A LabVIEW program is used to read the output of a 12-bit AD converter with range ± 10V. The binary output is available in 2-complement form. By some reason, the program gives the result in hex as C8A. Then the voltage is | ||
+ | -4,33 V | ||
+ | |||
+ | *A 300 ohm transmission line is terminated with a standard 50 ohm pure resistive termination. A signal is transmitted on the line. | ||
+ | There will be a phase reversal of the reflected signal | ||
+ | |||
+ | [[Kategori:Fysikkfag]] |
Nåværende revisjon fra 3. nov. 2011 kl. 13:58
I faget Instrumentering består deler av evalueringen av en fire-timers prøve, der alle bøker samt Internett er tillatte hjelpemidler. I den forbindelse kan det være greit å ha en oversikt over nettsider med relevant informasjon. Linkene er forsøkt sortert slik pensumlisten er inndelt, enn hvor ulogisk den kan være.
Innhold
Generelt
- Pensumliste våren 2007
- Innsamlede svar på repetisjonsoppgaver våren 2007
- Glossary of Electrical Engineering Terms
- ELFA
Lab-oppgaver
- Lab-oppgave 3 (PID-controller)
Tall i datamaskiner
- Wikipedia: BCD (Se "Packed BCD" for 8421-BCD)
- Wikipedia: Gray code
- ASCII-tabell
- Kalkulator mellom binære, hexadesimale og desimale tall
Flyttall
- Wikipedia: Floating point
- Wikipedia: IEEE floating point standard (Se avsnitt "A more complex example" for fremgangsmåte)
Representasjon av negative tall
- Wikipedia: Exponent bias
- Wikipedia: Two's complement
- Wikipedia: Signed number representations (Bl.a. one's complement)
Støy
- Wikipedia: Ground
- Wikipedia: Electronic noise (Bl.a. liste over støytyper)
Støytyper
Data-konvertering
AD-convertere
- Wikipedia: AD-converter
- Flash-type AD-converter (Se spesielt siste kretstegning som kraftig forenkler Northrop s. 618)
- Wikipedia: Successive Approximation ADC
- Delta-Sigma-ADC
Sampling
- FFT og spektralanalyse i Matlab (siden Matlab er tilgjengelig)
- Sample and Hold
- Wikipedia: Sample and Hold
- Wikipedia: Anti-aliasing
Signaloverføring
Diverse
- Wikipedia: Thermocouple
- Wikipedia: Operational amplifier applications (forskjellige op-amper)
Flervalgsoppgaver
Før evalueringen våren 2007 ble der lagt ut eksempeloppgaver. Under følger et utvalg av disse med svar.
- An anti-alias filter is
Placed berore the input to remove frequencies above the Nyquist limit
- The resolution of a DAC depends on
The number of bits
- A LabVIEW program gives the value of an integer as 65534. You know that this actually is a small negative number, but represented as an unsigned 16-bit integer. The small number is
-2
- In addition to letters and numbers, the 7-bit ASCII code has codes for
Codes for communication control
- If the transfer function of a regulator has poles in the right half plane
The output will increase exponentially with time
- Suppose we have a small signal in the range 0 - 2 mV. It can be amplified by a factor of 1000. We have the choice of two AD converters, one 12 bit with range ± 10V and one 10 bit with range 0 - 5V. Which one has the best resolution?
They are equal
- Thermocouples need zero-point correction because
Their output gives the temperature difference between two junctions
- Shot noise has a frequency dependance that is called
White noise
- One of the following units is not used for magnetic fields:
Henry
- The transmission velocity of a signal on a coaxial line depends mainly on
The dielectric
- Which of these number representations have more than one representation for zero?
Sign + magnitude AND 1-complenent. (there is an error in the question, so it is removed from the test)
- A LabVIEW program is used to read the output of a 12-bit AD converter with range ± 10V. The binary output is available in 2-complement form. By some reason, the program gives the result in hex as C8A. Then the voltage is
-4,33 V
- A 300 ohm transmission line is terminated with a standard 50 ohm pure resistive termination. A signal is transmitted on the line.
There will be a phase reversal of the reflected signal