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Dynamic Aquatic Environmental Controller Team #4

Dynamic Aquatic Environmental Controller Team #4. INSERT PICTURE OF DAEC. Controls Temperature, pH, conductivity, and oxygen level Monitors vital environmental conditions of fish tanks Provide information on current environmental conditions in the fish tank.

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Dynamic Aquatic Environmental Controller Team #4

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  1. Dynamic Aquatic Environmental ControllerTeam #4 INSERT PICTURE OF DAEC

  2. Controls Temperature, pH, conductivity, and oxygen level Monitors vital environmental conditions of fish tanks Provide information on current environmental conditions in the fish tank. Team 4: Dynamic Aquatic Environmental Control

  3. Team 4: Expertise & Experience • Shawn Bentley • Chris Mueller • Erick Janke • Expertise: Industrial Electric Motors, Nanotechnology, Expertise: 2 internships • Expertise: DSP, Materials Engineering Experience: 1 internship • Expertise: Industrial Controls

  4. Team 4: Expertise & Experience • Nic Langlois • Jack Huynh • Expertise: Microwave Engineering, EMF Experience: Physics research • Expertise: Power System Testing Experience: Industrial Power System Testing

  5. Estimation Summary Estimated total man-hours – 480 hours system design tasks ~ 50 hours detailed design tasks ~ 70 hours verification tasks ~ 120 hours documentation tasks ~ 240 hours Note: This is only an estimation the manpower may reduce throughout the semester Estimated cost - $400 Team 4: Summary

  6. Sensors Temperature sensitivity of +/- 1 degree C pH Sensitivity of +/- .5 Salinity sensitivity of +/- 5% mS O2 sensitivity of +/- 5% ppm Dissolved O2 Controller Analogue input output channels x 4 Digital input output channels 8 bit x 3 Team 4: Performance Requirements

  7. Display Alphanumeric LCD display minimum 4 line. No back light Keypad Simple Alphanumeric keypad 12 key layout Operational modes On Off General Salt water tank operation Tank size from 50 gal up to 400 gal Team 4: Performance Requirements

  8. Environmental Operating Temperature Range: 50 – 90 OC Operating Humidity Range: 0 – 100 % R.H. non-condensing Storage Temperature Range: -10 – 70 OC Storage Humidity Range: 0 – 100 % R.H. non-condensing Storage Duration: 1 year Mechanical DC driven Solenoids 12 – 24 V Team 4: Standard Requirements

  9. Power Nominal voltage 120 Vac  102 – 132 Vac Nominal frequency 60 Hz  57 – 63 Hz Maximum Power Consumption: 250 W Plug type B Life Cycle Product Life Time: 10 years Full Warranty Period: 60 days Service Strategy: Factory Repair Team 4: Standard Requirements

  10. Compensating for non-linearity transducers Temperature dependant transducers Unknown time in programming Unknown costs concerned with out prototyping Interfacing unknown devices Team 4: Key Risk Areas

  11. UL1018:Electric Aquarium Equipment These requirements cover commercial and household electric equipment for use on or in aquariums in indoor locations at 300 volts or less, in accordance with the National Electrical Code, NFPA 70, such as heaters, pumps, filters, aerators, reflectors, hoods, electrically wired stands, and similar equipment UL 60730-1A: Automatic Electrical Controls for Household and Similar Use This Standard applies to the inherent safety; to the operating values, operating times, and operating sequence where such are associated with equipment safety; and to the testing of automatic electrical control devices used in, or in association with, household or similar equipment. UL 1244: Electrical and Electronic Measuring and Testing Equipment This standard applies to electrical, electronic, or electromechanical measuring or testing equipment designed to measure, or observe, and indicate quantities of electrical or electronic phenomena, or to supply electrical or electronic quantities for measuring purposes. Team 4: Safety Standards

  12. Electrical components will be adequately protected from the humid environment to prevent shorting and other dangerous failures due to corrosion. Unit has a GFCI enabled power source. Team 4: Safety Requirements

  13. 61000-3-3 EMC Part 4: Limitation of voltage fluctuations and flicker in low-voltage supplies < 16 A Application: Power Supply Why: Product power supply could fail and cause lighting to flicker 61000-4-2 EMC Part 4: ESD immunity tests Application: Entire Product Why: Product may give off static discharge if contacted by humans Team 4: EMC Standard Summary

  14. 61000-4-5 EMC Part 4: Surge immunity tests Application: Entire Product Why: Product must be susceptible to electrical disturbances such lightning 61000-4-11EMC Part 4: Voltage dips, short interruptions and variations Application: Entire product Why: Want to know if the product will work while experiencing a dip in voltage or after a voltage dropout Team 4: EMC Standard Summary

  15. Team 4: Block Diagram Power Supply Keypad & Display Sensor Block 1 Microcontroller Device Block 1 Device Block 2 Sensor Block 2

  16. Team 4: Block Diagram Description * Optional Block

  17. Team 4: Block Diagram Assignment Key ShawnChris ErickNic Jack Power Supply Keypad & Display Sensor Block 1 Microcontroller Device Block 1 Device Block 2 Sensor Block 2

  18. Team 4: Block #5 Signal Summary

  19. Block 1 – Sensor Block Owner: Chris Mueller

  20. Team 4: Description, Block 1 Block Description and Purpose • Capture Salinity, pH and O2 levels from the tank • Convert the Salinity, pH and O2 level information into an analogue signal • Send an analogue signal to the microprocessor.

  21. Team 4: Individual Block Description, Block 1 Block Diagram Power Supply 9 VDC Analogue Signal to the Microprocessor pH Sensor Signal Conditioning Signal Conditioning Conductivity Sensor 0 – 5 V O2 Sensor Signal Conditioning

  22. Team 4: Block #1 Signal Summary

  23. Max operating temperature = 32˚C Operating Humidity Range: 0 – 100 % R.H. non-condensing Storage Temperature Range: -10 – 70 OC Storage Humidity Range: 0 – 100 % R.H. non-condensing Maximum Storage Ambient Temperature = 70 C Team 4: Individual Block Description, Block 1 Standard Requirements

  24. Maximum Total Parts: 40 Maximum Parts and Material Cost: $150 Maximum Assembly and Test Cost: $50 Total PCB Area ~100 cm2 Maximum Total Weight: .5 Kg Team 4: Individual Block Description, Block 1 Standard Requirements continued

  25. Ph/ORP Electrodes: Maximum output voltage: +3 V Maximum output impedance: 2 Mohms Conductivity Electrode: Maximum output impedance: 2 Mohms Op Amps: Max voltage input: 9 V Unity Gain Low Noise Team 4: Individual Block Description, Block 1 Performance Requirements

  26. Primary Safety Standards UL 1018: Electric Aquarium Equipment UL 1244: Electrical and Electronic Measuring and Testing Equipment EMC Requirements 61000-4-2: ESD immunity tests 61000-4-5: Surge immunity tests 61000-4-11: Voltage dips, short interruptions and variations Team 4: Individual Block Description, Block 1 Safety & EMC Requirements

  27. Total Fits (λ): 536.2 MTBF: 212.8 years Warranty Period: ¼ year Failures at ¼ year: .001 unit 1% Failures: 2.138 years Team 4: Individual Block Description, Block 1Reliability Estimates

  28. Team 4: Individual Block Description, Block 1 Prototyping

  29. Block 2 – Power Source Owner: Shawn Bentley

  30. Delivers current and voltage as needed by other blocks Protects other blocks by preventing surges Team 4: Block 2, Individual Block Description / Block Diagram

  31. Team 4: Individual Block Description, Block 2 Block Diagram AC Outlet 120V Rectifier Regulator LOAD (12)V 1A Rectifier Regulator LOAD (-12)V 1A Current Protection Rectifier Regulator LOAD (5)V 1A Transformer Capacitor

  32. Voltage (V): Input 120V (AC) Output voltages of 5V, 12 V, -12V. Output 2 AC voltages of 120V (AC) Current (I): Provides current of 1A to all outputs Team 4: Individual Block Description, Block 1 Performance Requirements/Signal Input/Output

  33. Max operating temperature = 32˚C Operating Humidity Range: 0 – 100 % R.H. non-condensing Storage Temperature Range: -10 – 70 OC Storage Humidity Range: 0 – 100 % R.H. non-condensing Team 4: Individual Block Description, Block 1 Standard Requirements

  34. Primary Safety Standards UL 1018 - Electric Aquarium Equipment UL 1244 - Electrical and Electronic Measuring and Testing Equipment EMC Requirements 61000-3-3 - of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems 61000-4-2 - Electrostatic discharge immunity test 61000-4-5 - Surge immunity tests 61000-4-11 - Voltage dips, short interruptions and variations Team 4: Individual Block Description, Block 1 Safety & EMC Requirements

  35. Team 4: Individual Block Description, Block 1 Prototyping

  36. EMS LAB used for testing. Man hours approx. 40 Materials include transformers, PCB board, diodes, regulators, etc. Team 4: Individual Block Description, Block 1, Resources

  37. Total λ = 766.424 MTBF (years) = 15.1007 Warranty of five years Device most likely to fail is a capacitor. The capacitor can be replaced with a filter package. Team 4: Individual Block Description, Block 1 Reliability Processing

  38. Block 3 – Device block Owner: Jack Huynh

  39. Team 4: Individual Block Description, Block 3 Block purpose and description Interface with Microcontroller output signals to energize the relays. Use the relays to switch 120 VAC to solenoid valves of chemical dispensers and air pumps

  40. Team 4: Individual Block Description, Block 3 Block Diagram 1 +12 VDC 120 VAC From Power Supply Output conditioner Ph Control 50W Max Micro Controller (TTL) 5 V Output conditioner Conductivity Control Output Conditioner Aerator

  41. Block 3 : Signal summary

  42. Safety Standards UL1018: Electric Aquarium Equipment UL 60730-1A: Automatic Electrical Controls for Household and Similar Use EMC Standards 61000-4-2 EMC Part 4: ESD immunity tests 61000-4-5 EMC Part 4: Surge immunity tests 61000-4-11EMC Part 4: Voltage dips, short interruptions and variations Team 4: Individual Block Description, Block 3 Safety and EMC Standards

  43. Operating Temperature Range : 32-900 C Operating Humidity Range : 0-100% Storage Temperature range: -10 – 700 C Storage Humidity Range : 0 – 100% Storage duration : 1 year Input Voltage Range: 102-132 VAC Input Current Range :20uA – 2A Maximum Power Consumption: 50 W Team 4: Individual Block Description, Block 3 Standard Requirement

  44. Diode circuit protection over voltage surge Input voltage : AC & DC 1-bit digital signal (TTL) input Indoor operation Team 4: Individual Block Description, Block 3 Performance Requirements

  45. Power signals: Input: 120 Vac (nominal) min:102 max:132 12 Vac (nominal) min:11.4 max 12.6 Digital signal(1bit): Input : 0-5 Vdc Team 4: Individual Block Description, Block 3 Signal Input and Output Summary

  46. Team 4: Individual Block Description, Block 3 Prototyping plan

  47. Block 4 – Keypad and Display Owner: Nic Langlois

  48. Block purpose and description Give the user an interface with the product allowing for the user to set up the operational parameters for the DAEC Allow the user to see what the present settings are for the DAEC This block primarily consists of a display unit and a keypad interface with the supporting electronics. Team 4: Individual Block Description, Block 4

  49. Performance requirements Mechanical lifetime for keypad ~1million per key 5 Vdc power @ 1.2 mA nominal Standard 12 button alphanumeric keypad 8 bit digital input to display 4 bit input/out to/from keypad Operational Modes Setup – when setting up the device it will prompt for each of the four parameters in turn Standby – when not taking input from the keypad, stored setting values will be displayed Team 4: Individual Block Description, Block 4Performance requirements

  50. Team 4: Individual Block Description, Block 4Standard requirements Standard requirements • LCD and Keypad mounted to the housing for the unit • Backlit LCD display • Large LCD display (minimum 16x4 character display) • 5 Vdc logic

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