JPS58150818A - Circuit for detecting amount of rotational operation - Google Patents

Abstract

PURPOSE:To increase the detecting capacity of a rotational amount, by a method wherein a rotary direction in a game machine is detected by the shift of a phase between each terminals of pulse signals generated to the coil of a step motor and the rotational amount is detected by pulse numbers. CONSTITUTION:When the rotor of a step motor 60 is rotated by the CW rotary operation of a handle 1, a number of pulse signals accompanied with the rotational amount thereof are generated from coil terminals 1, 2 and the terminals -S, -R of FF1 and FF2 are operated to issue phase shifted signals. These signals are issued when the clock terminal signal from DFF3 reaches a high level and, when the CW rotary operation is carried out, DFF3 issues a high level signal always. Therefore, counters CO1, CO2 are brought to up-count states while pulse numbers are added and counted corresponding to the rotational amount of the motor 60 and the outputs of the counters CO1, CO2 display the CW rotational amount of the handle 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotational operation amount detection circuit, and more particularly, to a rotational operation amount detection circuit that is used in a control game machine and quantitatively detects the amount of rotation of a steering wheel or the like.

Control game machines, such as cathode ray tube Kll! In video game machines, etc., where you can test your skills in controlling a ninety-degree vehicle,
Since the object to be controlled is moved and selected according to the amount of operation of the handle or dial, it is necessary to accurately detect the amount of rotational operation. It is also important to ensure that the smoothness of the one-turn operating section is not lost due to rounding of the rotation amount detection.

In order to meet all these requirements, the rotational operation detection circuit can be used as a rotational operation detection circuit to eliminate complicated I#I during assembly, maintenance and inspection, and parts replacement.
The present applicant has developed a device that uses a step motor as a detection means as an inexpensive and durable device.
It was proposed in No. 856-175459.

An object of the present invention is to provide a rotational operation amount detection circuit suitable for this device.

The present invention is characterized in that the direction of rotation is detected by the phase shift between the terminals of pulse signals generated at the coil terminals of a step motor driven by a handle, etc., and the number of pulses Kj of this pulse signal is detected. The purpose is to detect the amount of rotation. From this K, it is possible to provide a rotational operation amount detection circuit that is simple and has high performance.

Hereinafter, the present invention will be explained based on one embodiment of the accompanying drawings.

Fig. 1 is a perspective view of the mechanical part of the control device that detects the amount of rotational operation of the handle of a control game machine.The handle shaft 2 to which the operating handle 1 is fixed is integrally connected to the - of the gear 4 via the joint 8. has been done. The gear 4 is attached to the rotating shaft 614CQ of the step motor 60 and meshes with the nine gear 5, and the rotational operation of the operating handle l is accelerated by the gear 4.5 and transmitted to the rotating shaft 61 of the step motor 60. Become. This step motor 60 has nine permanent magnets each having convex magnetic poles attached to its rotor, and is rotated step by step by a predetermined angle in response to pulse input in a coil constituting a stator.

Coil terminal Il, 1k of this step motor 60.

12. When the rotor is rotated with the TJ open, a pulse output is generated at each terminal. This pulse output signal is
This is shown in the time chart in the figure. In the case of clockwise (hereinafter referred to as CWJ) rotation of the control handle l and counterclockwise rotation (hereinafter referred to as 1-CCWJ), the phase of the pulse signal generated at the coil terminals l and 12 is halved. It is understood that there is a periodic shift, and this is a superimposed point of the present invention.

Figure #88 is a detailed circuit diagram showing the circuit of the present invention, and the same reference numerals as in Figure 1 indicate the same elements.

Each coil terminal ll, rT of the step motor 60.

12. The intermediate terminal of 12 is grounded, and the other end is an amplifier At, Ag'', which performs waveform shaping, respectively.

Connected to A4. The nine-pulse signal shaped by this amplifier ASK is sent to the set terminal R of the flip-flop F10, and the pulse signal shaped by amplifier A2 is sent to the reset terminal R of the flip-flop FFI.
Similarly, the output of the amplifier A8 is input to the set terminal S of the R@8 flip-flop FF2, and the output of the amplifier A4 is input to the reset terminal R of the 7 flip-flop FF2.

The output Q of the flip-flop FF1 is input to the D terminal of the flip-flop FF8, and the output Q of the flip-flop FF2 is input to the clock terminal C of the D-slip prop FF8 and the up/down counter C.
Each is input into OI's human power file. The above configuration is the rotation direction of the step motor 600, that is, the coil electronic 1
This is a circuit configuration for detecting a phase shift between 1 and 12.

Furthermore, an up/down counter COI that constitutes a counting circuit
and C02ti are connected in cascade, that is, the carry terminal CY of the counter Cot is connected to the counter 00.
It is connected to input terminal C of 2, and constitutes a 2-digit counter, but the number of these counters can be increased or decreased as desired depending on the purpose.
The up/down control terminal of the D flip-flop FF
The output signal of Hatake is input, and when this output signal is at a high level, up-counting is performed, and when the output signal is at a low level, down-counting is performed. The outputs of these counters 001 and 002 are connected to the computer cpu6c4 through the I10 port.
The position is calculated according to the person's purpose.

The operation of the above-mentioned cycle W1111 will be explained with reference to the time chart shown in FIG. First, when the rotor of the step motor 60 is rotated by the CWIg 1 rotation operation of the handle l in the first step, a pulse signal representing the number of runs corresponding to the amount of rotation is transmitted to the coil terminal! l and! 2, and by this pulse signal '#)4
! The set terminal S and reset terminal R of the 7 lip-flops FFI and FF2 are activated, and the result is Figure 4! As shown at 8 and 14 (t·˜ts), the flip-flops FFI and FF2 output signals out of phase.

These signals are output from the D terminal when the clock terminal signal of this FF8 reaches the bird level due to the D flip 70 knob FF8, so a high level is always output when the handle is rotated CW. do. Therefore, the counters COI and CO2 add and count the number of pulses corresponding to the output of the shift flip 70 knob FF 2, that is, the rotation angle of the step motor 60, in the up-counting state, and the outputs of these counters COI and CO2 are output from the handle 1. This shows the amount of CW rotation of .Next, when this handle l is rotated CCW from the above state,
As shown in FIG. 4, 71 and 12, a number of pulse signals corresponding to the amount of rotation are generated at the coil terminals 71 and 12, and these pulse signals cause the set key S and reset terminal of each of the 7 lip-flops FFI and FF2 to be activated. R is activated and outputs the phase shift signal of the flip-flops FFI and FF2ri as shown in FIGS. 18 and 14 (t+Yetaka). Here, this phase shift is further shifted by half a period compared to the case of CW rotation described above.

Therefore, in this case, when the clock terminal C of the D flip-flop FF8 becomes a high level, the D terminal is at a low level, so when the output of the 7 lip-flop FF2 becomes a high level for the first time after CCW rotation, the
The output of F8 becomes a low level, and this state is maintained where the direction of rotational force remains unchanged.

Therefore, the counters COI and CO2 enter a down-counting state and count nine pulses according to the output of the flip-flop FF2, that is, the rotation angle of the step motor 60 by IR calculation.

Therefore, the middle point of the handle 1 tUt counter CO1
And if the output of CO2 is set to lθ radical "60", when the steering wheel is rotated tocw, it will be added as 61, 62.68...70 according to the rotation angle, and then the steering wheel will be reversed to CCW. - When rotated, the angle of rotation changes to 70
．． 4!9.68...50 is subtracted. Of course, if you turn the handle CCW beyond the midpoint, it will be an additional 50.4
It goes without saying that 9.48... is subtracted.

These outputs are connected to the computer CP via the I10 port.
The information is processed by U and displayed on a cathode ray tube as a peripheral device to control the car.

Here, the action of the computer CPU is to appropriately calculate the ratio between the amount of rotation of the steering wheel l and the amount of rotation of the step motor 60, and to control the position on one side of the vehicle controlled by the steering wheel l. This does not necessarily mean a membership fee, but it is very advantageous in terms of compatibility of game machines, all digital control, etc.

The present invention can be used not only for detecting a rotation operator of a game machine as in the above-mentioned embodiment, but also as a digital voltometer (rotational displacement meter, etc.), for example, for the position control circuit of a high-precision manipulator. Needless to say, it can also be used as a position detection circuit.

As explained above, the enclosure of the present invention focuses on the number and phase shift of pulse signals based on the electromotive action of the step motor, and thereby makes it possible to detect the amount of rotation, including the direction of rotation, with a simple circuit configuration. This eliminates the need for complicated assembly and inspection work, and greatly improves operational stability.

Moreover, the rounding temperature is completely digitalized in terms of circuitry.
It is very advantageous in terms of durability and compactness, and in combination with a step motor, a highly accurate position detection circuit is constructed, giving a new direction to its application as a digital battery 1' meter.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the mechanical part used in the circuit of the present invention, and Fig. 2 is a time chart of a pulse signal generated at the coil terminal of a step motor. FIG. 4 is a circuit connection diagram showing one embodiment of the present invention, and FIG. 4 is a time chart of each terminal signal in this circuit. 1e・-operation handle 60・1 step motor AI, A2. A8. A4-...Amplifier FFI, F
F2...hs flip-flop FF8...D flip-flop COI, CO2...up-down counter Applicant Universal Co., Ltd.

Claims (1)

[Scope of Claims] (1) A rotor of a step motor to which a permanent magnet is fixed is rotated in conjunction with a rotary operation section, and pulses generated at a coil terminal of a stator of the step motor as the rotor rotates; In the rotary operation detection circuit that detects the amount of rotation of the rotary operation section by digitally counting pulse signals, the rotation operation detecting circuit includes means for detecting a phase shift of pulse signals generated at each coil terminal of the step motor; a rotational operation amount detection circuit, comprising: a stitch number means for adding and subtracting the pulse signal, and configured to detect the rotational operation amount based on the output of the counting means. (11) 1-L-87 as means for detecting phase shift
The rotational operation amount detection circuit according to claim 1, characterized in that it is constructed of a lip-flop and a D-arbit flop. (3) The rotational operation amount detection circuit according to claim 1, wherein the counting means is an up/down counter.