Question 1 Name 9 characteristic parameters of sensors. Treshold, noise, range, stability, linearity, accuracy, precision, sensitivity, hysteresis Question 2 Given the circuit below (using a SYH-2R humidity sensor) determine the output voltage for a relative humidity of 70 % at 30 °C if R T = 50 kΩ and VDD= 2.5 V. R70 30 c =R H =9,2 kV RH 9,2 k V O= ∙ V DD= ∙ 2,5 = 0,388 V (R T + R H ) ( 50 k +9,2 k ) Hint: Check specification for Humidity Sensor of SYH-2R.pdf at http://www.rhopointcomponents.com/images/SYH-2R.pdf 2 Week 04 Homework Question 3
Question 1 Name 9 characteristic parameters of sensors. Solution: 1. Thershold. 2. Sensitivity. 3. Full Range. 4. Linearity. 5. Accuracy. 6. Precision. 7. Stability. 8. Hysteresis. 9. Noise. Question 2 Given the circuit below (using a SYH-2R humidity sensor) determine the output voltage for a relative humidity of 70 % at 30 °C if RT = 50 kΩ and VDD= 2.5 V. Solution: Check specification for Humidity Sensor of SYH-2R.pdf at: http://www.rhopointcomponents.com/images/SYH-2R.pdf 2 Week 04 Homework - Solutions Check Thermistor - Wikipedia.pdf at http://en.wikipedia.org/wiki/Thermistor Calculate the Humidity Sensor resistance at 30°C T = 273.15°C +30°C = 303.15°C T0 = 273.15°C +25°C = 298.15°C R60% 30°C =25.5858 kΩ - Matlab code: 33*exp(4600*(1/303.15-1/298.15)) = 25.5858 Calculate the Humidity Sensor resistance at relative humidity 70% See the above graphic for the standard resistance:
nähtav. Kattevärv rõhutab voodrilaua profiili. Kui vooder on niisketes ruumides, peab vertikaalvoodri alumise otsa lõikepind olema alati kaetud. Saunavoodri laua pind kaetakse selleks otstarbeks mõeldud nn sauna pinnakattega, mis on lõhnatu ja ei kleepu. Sisevoodri standardprofiilid Puitvoodrilaudade enimkasutatavad profiilid on näha joonistel. STS Paksus 12-21 mm Laius 70-195 mm STK Paksus 12, 15, 18 mm Laius 120-195 mm STV Paksus 12-21 mm Laius 70-195 mm SYH Paksus 18, 21 mm Laius 95-120 mm STP Paksus 12-21 mm Laius 70-195 mm STH Paksus 18,21 mm Laius 95,120 mm 2. Välisvooderdus Üldinfo Fassaadivooderduseks soovitatakse kasutada kuusepuitu (kvaliteediklass B). Kuivades "sulguvad" kuusepuidu rakud ja puit on maltspuidust (tüve välisosa) lülipuiduni (siseosa) samaväärne männipuidu lülipuiduga. Männipuidu maltspuit jääb "avatuks" ja sulgub ainult lülipuit
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