Sunday, 25 November 2012

Workplan


a workplant gantt chart. Click picture to view full page.

Prototype


Prototype (Design)
This is the design of the prototype that will be build by me. However, i will ask for my advisor which Sir Nadaraj for more suitable design

LabVIEW software

LABVIEW

  1. LABVIEW is a (short for Laboratory Virtual Instrumentation Engineering Workbench) is a system design platform and development environment for a visual programming language from National Instrumentations. 
  2. LABVIEW is commonly used for data acquisition, instrument control, and industrial automation on a variety of platforms including Microsoft Windows, various versions of UNIX, Linux, and Mac OS X. 
  3. The programming language used in LABVIEW is a data flow programming language. Execution is determined by the structure of a graphical block diagram (the LV-source code) on which the programmer connects different function-nodes by drawing wires
Purpose

1.      The purpose of using this Labview is to control the water’s level in tank and when it come to the set point of desired level it will automatically stop or on the pump and also it will give a signal to user so that the user know either the pump is on or off and also to let user know the level of water.
2.      So, as the input to the Labview, we need a sensor to determine the level of the water in the empty tank,half empty or full as we already set. When it come to desired point, the pump wil automatically on or off. This process using the Labview to determine the level of the water using the ultrasonic sensor.

Alternate Current Driver



COMPONENTS

Quantity
Resistors (1/4W, 5% carbon):


2K2 red red red       
1
10K brown black orange
1
180K brown violet yellow
1
150nF/400V dipped polyester
1
47nF/630V dipped polyester
1
0.22uF/250V AC dipped polyester
1
Potentiometer 250K
1
Triac 2N6075 or BT136-500D
1
Diac (HT-32)
1
Choke coil (100uH)           
1
Terminal Blocks
2
2A or 3A fuse + holder
1
3019 PCB
1



   Alternate Current Driver
  1. AC motor drives can be broadly categorized into two types, thyristor based and transistor based drives. Thyristors possess the capability of self-turn-on by means of an associated gate signal but must rely upon circuit conditions to turn off whereas transistor devices are capable of both turn-on and turn-off. 
  2. Because of their turn-off limitations, thyristor based drives must utilize an alternating EMF to provide switching of the devices (commutation) which requires reactive volt-amperes from the EMF source to accomplish. 
  3. This AC drive is build to control the speed of water pump so that we can manipulate the amount of water that entering the water tank.




Overview

UPS pumps constitute a complete range of 3-speed circulator pumps, available both in 50 and 60 Hz.
The pumps can be used in both open and closed systems. UPS pumps are of the canned-rotor type, i.e. pump and motor form an integral unit without a shaft seal and with only two gaskets for sealing. The bearings are lubricated by the pumped liquid.
Applications
UPS pumps are designed for circulation of liquids in heating and air-conditioning systems. Pumps with bronze or stainless steel housings are also suitable for use in hot-water service systems. Examples of typical applications are:
  • One- and two-pipe heating systems
  • Main pumps
  • Zone pumps
  • Boiler shunt pumps
  • Pumps for heating surfaces
  • Calorifiers
  • Underfloor heating systems
  • Solar heating systems
  • Heat pump systems
  • Geothermal heating systems
  • Heat recovery systems
  • Two-pipe air-conditioning systems
  • Pumps for refrigeration units.

    Features and benefits
    • Maintenance-free
    • Low noise
    • Low energy
    • Complete range
    • Available with corrosion-resistant stainless steel or bronze pump housing
    • Wide range of accessories

    ultrasonic transducer


    Precision Ultrasonic Range
    Sensing
    Range-finding at a fraction of the
    cost of other precision rangefinders
    Reading-to-reading stability of
    1-mm at 1-meter is typical
    Accuracy is factory-matched at
    1-meter to 0.1% providing a typical
    large target accuracy of 1% or better
    for most voltages and uses1
    Calibrated acoustic detection zones
    allows users to choose the part
    number with the detection zone that
    matches their specific application
    Compensation provided for target
    size variation and operating voltage
    range
    Internal temperature compensation is
    standard
    Optional external temperature
    compensation


    Very Low Power
    Requirements
    Wide, low supply voltage
    requirements eases battery powered
    design
    Low current draw reduces current
    drain for battery operation
    Fast first reading after power-up
    eases battery requirements


    Easy to use Component
    Module
    Stable and reliable range readings
    and excellent noise rejection make
    the sensor easy to use for most users
    Easy to use interface with distance
    provided in a variety of outputs
    Target size compensation provides
    greater consistency and accuracy
    when switching targets
    Sensor automatically handles
    acoustic noise1,2
    Sensor ignores other acoustic noise
    sources
    Small and easy to mount
    Calibrated sensor eliminates most
    sensor to sensor variations
    Very low power ranger, excellent for
    multiple sensor or battery based
    systems

    Range Outputs
    Pulse width, (1uS/mm)
    Analog Voltage, (5mm resolution)
    Serial, (RS232 or TTL, where TTL
    format by solderable jumper or
    volume orders available as no-cost
    factory installed jumper)


    General Characteristics
    Low cost ultrasonic rangefinder
    Sensor dead zone virtually gone,
    Size less than 1 cubic inch with easy
    mounting
    Object proximity detection from
    1-mm to 5-meters
    Resolution of 1-mm
    Distance sensor from 30-cm to
    5-meters
    Excellent2 Mean Time Between
    Failure (MTBF)
    Triggered operation yields a
    real-time
    100mS measurement cycle
    Free run operation uses a 2Hz filter,
    with 100mS measurement and
    output cycle
    Operating temperature range
    from -15°C to +65°C, provided
    proper frost prevention is employed
    Operating voltage from 2.5V to 5.5V
    Nominal current draw of 2.5mA at
    3.3V, and 3.1mA at 5V


    Applications & Uses
    Bin level measurement
    Proximity zone detection
    People detection
    Robots ranging sensor
    Autonomous navigation Distance
    measuring
    Long range object detection
    Environments with acoustic and
    electrical noise
    Height monitors
    Auto sizing