Method and device for voltage frequency transformation
AssigneeSiemens Aktiengesellschaft
InventorHagen Hartwig
Life of this patent
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Abstract
A method and the device for voltage frequency transformation produce a fast, highly accurate voltage frequency transformer which has a wide frequency range. This method and device can be implemented with simple means. The discontinuous output signal of an integrating voltage-controlled oscillator (VCO) is transformed back into a constant voltage via a frequency divider. Then the result is compared with the input voltage (U.sub.E), and the result of the comparison is used to regulate the integrating, voltage-controlled oscillator (VCO).
Claims19
A method for voltage frequency transformation comprising the steps of:
- a) applying an input voltage (U.sub.E) to an integrating voltage-controlled oscillator to form an output signal (U.sub.v);
- b) dividing the output signal (U.sub.v) of the voltage-controlled oscillator with a frequency divider to form a divided output signal (U.sub.T);
- c) transforming the impulses (P.sub.T) of the divided output signal (U.sub.T) into an impulse sequence (IPB) With a constant pulse width;
- d) forming precision impulses (IPF) with a constant area by regulating an amplitude of the impulse sequence (IPB);
- e) generating a constant voltage (UE,) from the precision impulses (IPF);
- f) forming a difference voltage (U.sub.dE) from the constant voltage (UE) and the input voltage (UE);
- and
- g) applying the difference voltage (U.sub.dE) to the voltage-controlled oscillator via a controller (R.sub.I).
A device for voltage frequency transformation comprising:
- a) an amplifier receiving an input voltage and outputting an adjusted input voltage (U.sub.EV);;
- b) an integrating voltage-controlled oscillator having a first coupled to the amplifier and having a second input and outputting an output signal having individual pulses (P);
- c) a control segment coupled to the integrating voltage-controlled oscillator forming a constant output voltage (U'.sub.E);
- d) a comparator coupled to the control segment comparing the constant output voltage (U'.sub.E) to the input voltage and outputting a difference voltage (U.sub.dE);
- e) a regulator coupled to the comparator regulating the difference voltage (U.sub.dE) and having an output coupled to the second input of the integrating voltage-controlled oscillator;
- f) a driver stage coupled to the integrating voltage controlled oscillator;
- g) a transmission segment coupled to the driver stage;
- and
- h) an evaluation logic coupled to the transmission stage evaluating the output signal.
Dependencies are inferred from the claim text.