JPH0429812U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing the main part of an embodiment of this invention, Fig. 2 is a time chart showing waveforms of each part in an example of its operation, and Fig. 3 is a circuit showing the main part of another embodiment of this invention. Figure 4 is a time chart showing the waveforms of each part of the operation example, Figure 5 is a circuit diagram showing the main part of still another embodiment of this invention, and Figure 6 is the waveform of each part of the operation example. Fig. 7 is a block diagram showing a conventional optical interference angular velocity meter.
The figure is a connection diagram showing a specific example of the lamp generator 23.

Claims (1)

[Claims for Utility Model Registration] An optical path that goes around at least once, a means for transmitting clockwise light and counterclockwise light to the optical path, and means for transmitting the clockwise light and counterclockwise light that have propagated through the optical path. a means for interfering; a phase generating means disposed in series between the interfering means and one end of the optical path to provide a phase difference between the clockwise light and the counterclockwise light; and interference light from the interfering means. a photoelectric conversion means for detecting intensity as an electrical signal; a phase detection means for detecting phase difference information between the clockwise light and the counterclockwise light included in the output from the photoelectric conversion means; a sawtooth wave generating means for generating a sawtooth wave output with a frequency corresponding to the level of the signal; the sawtooth wave generating means integrates the output of the phase detecting means with an integrating capacitor; The voltage of the integrating capacitor and the reference voltage are compared by a comparator, and when the voltage of the integrating capacitor exceeds the reference voltage, the output of the above comparator drives the one-shot circuit to generate a pulse, and the pulse controls the switch circuit. In an optical interference angular velocity meter configured to discharge the electric charge of the integrating capacitor, when the optical interference angular velocity meter is powered on, the output voltage is output after the power supply voltage to the one-shot circuit reaches a predetermined value. An optical interference angular velocity meter characterized in that a power-on reset circuit is provided for discharging the electric charge of the integrating capacitor for a short time before or immediately after the state of the integrating capacitor changes.