JPS60209110A - Gyro-interface - Google Patents

Abstract

PURPOSE:To make design changes on an apparatus side and a synchro-receiver on the apparatus side unnecessary even when the sort of a gyroscope is changed by converting to the desired form for output a synchronizing signal outputted from the transmitting part of a gyro device by a wave converting circuit. CONSTITUTION:A wave converting circuit 8 is outputted converting each three- phase voltage (R, S, T) with respect to a voltage V into a desired form (for instance a square pulse) S1, S2, S3, when an alternating three-phase voltage from a synchro-transmitter and a reference voltage V as a basis are inputted. A latch circuit 9 maintains the condition of the signals S1-S3 and supplies signals, S1'- S3' to a signal processing circuit 10, when a starting signal 6 is impressed. A circuit 10 consisting of a ROM for instance, judges the phase order of the signals S1-S3 with respect to the signals S1'-S3' whether in a forward direction or reverse direction, and an up pulse S4 or a down pulse S5 are outputted, and synchronizing with it, a signal S6 is outputted to the circuit 9. Accordingly even when the sort of signals and the voltage values are changed by the sort of the gyro device, the pulse S4 or S5 corresponding to the input value is outputted and the control of the succeeding device can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gyro interface that is provided between a gyro device and equipment driven by the gyro device, and that matches signals therebetween.

Conventionally, a gyro device 1 as shown in a block diagram in FIG.
is composed of a gyro 2 and a synchro transmitter 3, and after the rotation angle of the gyro 2 is electrically converted by the synchro transmitter 3, it is transmitted to the synchro receiver 4 on the equipment side, thereby P P I (PlanePosi
The angle of the azimuth ring 5, etc. of the gyro device 1 is controlled, but in this case, the synchro transmitter 3 and the synchro receiver 4 must be of the same series, so for example, three types of synchro transmitters on the gyro device 1 side Whenever there was a change in the design of the equipment, it was necessary to change the design of the equipment.

Additionally, some types of sensors output pulses, which required a complete change in the design of the equipment.

In view of the above circumstances, it is an object of the present invention to provide a gyro interface that does not require a design change on the equipment side even if the type of gyro changes, and does not require a synchronization receiver on the equipment side.

In order to achieve this purpose, the gyro interface according to the present invention provides three signals output from the gyro device.
By receiving the launch signal and a waveform conversion circuit that converts the phase alternating waveform signal into a desired waveform signal and outputs it,
A launch circuit that holds the output waveform signal of the waveform conversion circuit: The phase of the three-phase alternating waveform signal is determined by comparing the hold signal output from the catch circuit with the output waveform signal of the waveform conversion circuit. a discriminating means for discriminating the order; and a synchronizing signal generating means for generating a predetermined synchronizing signal in accordance with the result determined by the discriminating means when the output waveform signal of the waveform conversion circuit and the holding signal are different. and a signal processing circuit configured to generate the latch signal in synchronization with the synchronization signal and supply it to the latch circuit.

The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 2 is a block diagram showing an embodiment of a gyro interface according to the present invention. In this figure, 7 is an interface, a waveform conversion circuit 8, a latch circuit 9
, a signal processing circuit 1o.

The waveform conversion circuit 8 converts alternating three-phase voltages (R phase, S phase, T
The three-phase voltage of each phase) and the reference voltage V that serves as a standard are input, and each voltage (R, S, T) of the three-phase voltage with respect to the reference voltage V is input as a signal of a desired format (for example, a square pulse) sl. , s2. It converts into s3 and outputs it. The waveform conversion circuit 8 is shown in FIG. 3 (a).
.

As shown in (b), when any of the phases (R, S, T) has a voltage value higher than the reference level h obtained from the reference voltage V (for example, 60%), the time t between
Only shift signals SL, S2. As shown in the figure, in synchronization with the phase order of the three-phase voltages R2S and T, shift signals Sl and S2°Ss are also generated sequentially in the same phase order. This phase order is shown in FIG.
l-82-tS3, the three-phase voltages are in reverse phase and T-
In the case of 8-R phase order, the phase order of the shift signal is S3→S2→
It becomes S1.

These shift signals SL, S2. S3 is supplied in parallel to the aforementioned latch circuit 9 and signal processing circuit 10.

The launch circuit 9 maintains the states of the shift signals Sl, S2°Ss and supplies the holding signals Sl', S2', S3' to the signal processing circuit 10. When the activation signal S6 is applied to the launch circuit 9, Then, the latch circuit 9 holds the immediately preceding shift signals 81 to S3, and outputs them as holding signals S, / to S;.

The signal processing circuit 10 is constituted by, for example, a ROM (IJ-1' only memory), and receives the holding signals Sl', S2', S3' of the latch circuit 9 and the shift signals Sl, S2 . If S3 is input,
After the holding signals S, /~S5 and the starting signal SI are applied, these holding signals F3(+S2 p
S3' and the shift signals Sl, S2. S3 respectively to determine the phase order of the shift signals S1.
As shown in the figure, the phase order is either normal phase direction A1 or reverse phase direction A
2.

That is, the shift signals "Sl, S2.S3' are 1°o,o
7-7o, t, o" or "0, 1, . 0"-"0゜0
．． 1', or "O, 0, 1"-" 1, 0, O
”, it is determined that the phase is in the positive phase direction Al, and the shift signals “Sl, S2 . S3" is "1.0', O'-0,0,
,1", or "0,0.1'-"0,1°0", or"
If it changes from 0,1.0'' to 1,0.0', it is determined that the direction is in the opposite phase direction A2.

After this, when the signal processing circuit 10 determines that the positive phase direction is A1, it outputs one up signal S4 from the terminal 10a, and when it determines that the negative phase direction is A2, it outputs one up signal S4 from the terminal
One down pulse S5 is output from 0b and supplied to a downstream device (not shown).

In this case, the subsequent device has a counter, etc., and an amplifier,
Calculate the absolute value of the angle by counting down pulse S4' + 85 and calculate the PPI sensor? It controls the drive mechanism of a motor or a stepping motor.

In addition, as shown in FIGS. 3(a) and 3(b), the signal processing circuit 1
0 outputs one activation signal S6 to the latch circuit 9 in synchronization with the up pulse S4 or the down pulse S5.

In this way, this interface 7 has synchronized transmission a
and a subsequent device such as a stepping motor,
It processes the output of the synchro transmitter and outputs up pulses or down pulses, which are then supplied to subsequent devices.
No synchronized receiver required.

Even if the types of signals input to this interface 7 (three-phase voltage signal, pulse train signal, etc.) and voltage values differ depending on the type of mata gyro, the waveform converter 8 can match them, so the type of gyro can be changed. also the amplifier pulse S4 or down pulse S corresponding to the input value
5 can be output to control subsequent devices.

As explained above, in the gyro interface according to the present invention, the waveform conversion circuit converts the synchronization signal output from the transmitting section of the gyro device into a desired format and outputs the same, and the launch circuit converts the output of the waveform conversion circuit into a starting signal. A signal processing circuit determines a change in the output of the waveform conversion circuit with respect to the output of the launch circuit, outputs the determination result, and outputs the activation signal to the launch circuit. Therefore, even if the type of gyro changes, there is no need to change the design of the equipment, and furthermore, there is no need for a synchro receiver on the equipment.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional gyro device, FIG. 2 is a block diagram for explaining an embodiment of a gyro interface according to the present invention, and FIG. 3 (A). (b) are shift signals and up signals for input values, respectively;
FIG. 4 is a diagram illustrating the output signal and activation signal of the down/main pulse, and FIG. 4 is a diagram illustrating the phase sequence of the shift signal with respect to the input signal. 7... Interface (gyro interface), 8... Waveform conversion circuit, 9... Latch circuit, 1°.
...Signal processing circuit, R, S, T...Input value (three-phase voltage), Sl, 82. S3...shift signal, s4...up pulse, S5...down pulse, s6...start signal (latch signal). Patent Applicant Anritsu Electric Co., Ltd. Agent Patent Attorney Norimitsu Sukimura Figure 1 rl Page 2 7 Figure 3 (a) Figure 3 (b) 8゛・, R 1'''-1 +-/''' j jl j j j l l',il”2
, −jjjlj jjj i l l ゛110, 1i , :1゜

Claims (2)

[Claims] (1) A waveform conversion circuit that converts a three-phase alternating waveform signal output from the gyro device into a desired waveform signal and outputs the desired waveform signal; by receiving a latch signal, the output waveform signal of the waveform conversion circuit is a launch circuit for holding; a determining means for determining the phase order of the three-phase alternating waveform signal by comparing the holding signal output from the latch circuit with the output waveform signal of the waveform conversion circuit; synchronizing signal generating means for generating a predetermined synchronizing signal in response to the result determined by the determining means when the output waveform signal of the conversion circuit and the holding signal are different; A gyro interface comprising: a signal processing circuit comprising launch signal generating means for generating a launch signal and supplying it to the latch circuit. (2) The gyro interface according to claim 1, wherein the signal processing circuit is constituted by a ROM.