Quartz crystal thermometer with time service realized by GPS

Quartz crystal thermometer with time service realized by GPS

  • CN 103,792,021 A
  • Filed: 02/26/2014
  • Published: 05/14/2014
  • Est. Priority Date: 02/26/2014
  • Status: Active Application
First Claim
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1. a QCT for GPS time service, is characterized in that:

  • comprise gps antenna (3), GPS module (6), quartz crystal probe (1), oscillator (4), high-speed counter (7), gating control module (8), single-chip microcomputer+solid hard disk (9), man-machine interface (10), display unit (5);

    Gps antenna (3) receives gps satellite time signal, and the pulse per second (PPS) of GPS module (6) output high precision is to gating control module (8);

    Gating control module (8) is also accepted the instruction of man-machine interface (10) simultaneously, and gating control module (8) provides enabling nulse and closes gate pulse to high-speed counter (7);

    Quartz crystal probe (1) and oscillator (4) composition quartz oscillator sine wave output, sinusoidal wave frequency changes with the temperature of quartz crystal probe (1);

    The pulse shaping circuit of high-speed counter (7) front end is converted to sine wave the spike pulse of same frequency, in the time interval between the enabling nulse that high-speed counter (7) provides in gating control module (8) and pass gate pulse, accurate measurement spike pulse number;

    To a specific quartz crystal probe (1), this spike pulse frequency is relevant to the temperature monodrome of quartz crystal probe (1);

    There is frequency---the temperature curve of this specific quartz crystal probe (1) single-chip microcomputer+solid hard disk (9) inside, through display unit (5) displays temperature and rate temperature change;

    Single-chip microcomputer+solid hard disk (9) is supported fieldbus with the interface of DCS (2), meets IEC61158Ed.3 standard for Fieldbus;

    Man-machine interface (10), for accepting the time signal of GPS module (6), is determined enabling nulse and closes the time interval between gate pulse;

    Be treated as the additional function of GPS navigation instrument and intelligent navigation mobile phone through low power consumption, high resolving power, pinpoint accuracy, high stability be provided, be convenient to the shared temperature signal of long-distance transmissions, participate in the various application that need temperature signal.

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