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You are here: Home / Topics / wireless temperature sensor

wireless temperature sensor

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Microcontroller › 8051 › wireless temperature sensor

  • This topic has 2 replies, 3 voices, and was last updated 11 years, 6 months ago by Engr. Mansoor Mirza.
Viewing 3 posts - 1 through 3 (of 3 total)
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    Posts
  • February 1, 2011 at 1:37 pm #598
    Peter Turner
    Participant

    Hi friends

    I am working on an application which is used to sense temperature and pressure from a boiler and can give its output wirelessly

    i am using 8051 Microcontroller, LM335 for temperature sensor circuit, MPX4250 for pressure sensor circuit

    and using xbee to get output i want it to be more accurate and useful so i need some worthful suggetions from you guys

     

    February 1, 2011 at 10:02 pm #5392
    Christian Wilhelmsen
    Participant

     So, what accuracy do you have right now? One can not say what to do when we don´t know what you have already done.

    February 2, 2011 at 3:54 am #5395
    Engr. Mansoor Mirza
    Participant

    you can use DS 1621 Chip for more accuracy!

     

    The DS1621 Digital Thermometer and Thermostat provides 9-bit temperature readings, which indicate the temperature of the device. The thermal alarm output, TOUT is active when the temperature of the device exceeds a user-defined temperature TH. The output remains active until the temperature drops below user defined temperature TL, allowing for any hysteresis necessary. User-defined temperature settings are stored in nonvolatile memory so parts may be programmed prior to insertion in a system. Temperature settings and temperature readings are all communicated to/from the DS1621 over a simple 2-wire serial interface.

    • emperature measurements require no external components

     

     

    ?Key Features:

     

    • Measures temperatures from -55°C to +125°C in 0.5°C increments. Fahrenheit equivalent is -67°F to 257°F in 0.9°F increments
    • Temperature is read as a 9-bit value (2-byte transfer)
    • Wide power supply range (2.7V to 5.5V)
    • Converts temperature to digital word in less than 1 second
    • Thermostatic settings are user definable and nonvolatile
    • Data is read from/written via a 2-wire serial interface (open drain I/O lines)
    • Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermal sensitive system
    • 8-pin DIP or SO package (150mil and 208mil)

     

     

     

     

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