JPS6031786A - Running toy - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a running toy that identifies the direction of a sound source and changes its running direction in response to the direction.

The purpose of the present invention is to generate a sound above a predetermined level (for example, above a noise level) using handclaps, percussion instruments such as castanets, or other sound generating tools, and to identify the source of this sound. It is an object of the present invention to provide a running toy that changes its running direction by detecting the direction of its existence.

The traveling toy of the present invention includes a pair of sound-to-electrical conversion elements provided at different distances from the position of the sound source, and 11) output analog electrical signals of different output levels from the pair of sound-to-electrical conversion elements. A pair of amplification/conversion circuits that convert into predetermined digital electrical signals; a pair of period conversion circuits that convert the output signals from the pair of amplification/conversion circuits into digital signals with different periods, and signals obtained from these period conversion circuits. , at least a direction conversion circuit having a switching circuit that controls the drive width motor in a 0N10FF manner using digital output signals having different periods, and the period of the output signal on the side of the sound-to-electric conversion element located closer to the sound source is The present invention is characterized in that the duration of ON of the driving motor is controlled to be different by utilizing the fact that the period of the output signal is different from that of the sound-to-electrical transducer located further away.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

First, a dog toy is used as the running toy of the present invention. 1 to 3 show a toy 10 for a dog, and a racket 14 is held in the dog's mouth 12. As is clear from Figure 2, three wheels 16.17
．． 18 are provided, of which 16 and 1
Two wheels 7 are driving wheels, and the remaining one is a driven wheel 18. Therefore, for example, when the right driving wheel 17 is rotationally driven, the driven wheel 18 is driven accordingly, but since the other driving wheels 16 do not rotate much, the dog 10 rotates to the left with this driving wheel 16 as the center of rotation. It starts to rotate. That is, when the right drive wheel 17 rotates a lot, the left drive wheel 16 does not rotate much and starts to rotate counterclockwise, and conversely, when the left drive wheel 16 rotates a lot, it rotates clockwise.

Further, a power switch 19 is provided on the bottom surface. A microphone that receives sound from a sound source (in this example, an Electret condenser microphone is used) 20
R and 20L are provided at the positions of the right eye and left eye of the dog 10.

Next, an example of a direction changing device for a traveling toy according to the present invention will be explained with reference to FIG.

As is clear from the circuit diagram of FIG. 4, two almost identical direction conversion circuits are provided, and these function as a right circuit and a left circuit. Therefore, regarding the configuration, for example, only the right side circuit will be explained, and common parts will be omitted.

First, an electret condenser microphone (hereinafter simply referred to as microphone) 20R, which receives sound generated from a sound source (not shown), is implanted in the right eye area of the dog 10. , three stages of transistors 22R, 23R and 24R are provided for amplifying the microphone 2OR output voltage to a predetermined level. In addition, as will be described later, these transistors convert the input analog signal (=microphone output voltage) into a TTL level digital signal by utilizing the saturation reduction of the transistor in order to operate the subsequent flip-flop. It also has functions. A flip-flop 2eR is connected to the emitter of the transistor 24H that outputs the microphone output voltage converted to a TTL level digital signal.
, and its output terminal is connected to one input terminal (indicated by l in the figure) of the A/N/G1-3OR via the RC integrating circuit 28R. The output terminal (indicated as 3 in the figure) of this AND gate 30R is connected to one input terminal (indicated as 5 in the figure) of an AND gate 34R via a differentiating circuit 32R. The output terminal (indicated as 4 in the figure) of the AND gate 34R at the subsequent stage is connected to the base of the motor drive transistor 38H. A left motor 38L connected to the left drive wheel 16 is connected between these collectors and the positive power supply line (the reason for this will be described later). In addition, amplification transistors 23R, 24R, 23
RC integration circuits 25R and 25L are connected between L and 24L, respectively.

Next, the left circuit also has almost the same circuit configuration as the double right circuit, but the following differences will be explained. That is, the third stage amplification transistors 24R and 2
The collectors of 4L are connected to flip-flops 26L and 26H of the other circuit, respectively. Furthermore, the output terminals of the second stage AND gates 1.34R and 34L (indicated as 4 and 10 in the figure) are connected to diode 3.
Flip-flop 2EiR through 5R and 35L
2BL's reset input terminals (indicated as 6 and 13 in the figure).

The operation of the above direction conversion circuit will be explained.

First, consider the case where the sound source exists on the right side with respect to the dog 10 (that is, the microphone 2OR is
01. (closer to the sound source). In this case, the dog needs to operate this direction changing circuit so that it changes direction toward the sound source, that is, toward the right. That is, according to the above-mentioned operating principle, since the motor 38L for the left drive wheel 16 needs to rotate for a longer period of time than the septa 38R on the opposite side, the final stage transistor 38R of the sound detection circuit on the right side is
It is necessary to connect the motor 38L for the drive wheel 16 on the opposite side, that is, the left side.

To explain based on the second operating principle, the right microphone 2
The sound pressure of the sound source input to the OR is slightly larger than that of the left microphone 2OL. It is designed so that the difference in sound pressure between these microphones can be detected to control the rotation connection time of each drive motor. Right side microphone 2OR
A sound signal with a large sound pressure input into the circuit is converted into an electric signal, and only the alternating current signal is sent to the three-stage transistor 22R.
, 23R, 24R. This analog signal is waveform-shaped by the RC integration circuit 25R, and is converted to T by the saturation effect of the third stage transistor 24H.
It is converted into a digital signal having the TL level and supplied to the input terminal (indicated by l in the figure) of the flip-flop 2SR.

As a result, the output level of the flip-flop 26R is inverted and supplied to the differentiating circuit 32H via the second integrating circuit 28R and the AND gate 30R. Here, the sound signal is differentially adjusted to adjust the pulse width (that is, the adjustment width is adjusted by changing the time constant of the differentiating circuit), and then supplied to the AND gate 34R. Since the output signal of this ANDK game 1-34R is supplied to the base of the motor drive transistor 36R, this transistor 3BR is ON for the duration of the positive amplitude of this output signal, so the left side is left only for this time period. The motor 38L for drive #a16 rotates.

On the other hand, the sound signal from this sound source is also input to the microphone 2OL of the left circuit, but its sound pressure is slightly lower than that of the right microphone 2OR. This low sound pressure signal is also processed by the direction conversion circuit in the same manner as described above, so a detailed explanation will be omitted, but only the differences will be explained.

The output signal of the left flip-flop 26L has a shorter period than that of the right flip-flop 28R. In other words, as mentioned above, the third stage transistor 24R,
Since the collector output of 24L is supplied to flip-flops 28L and 28H on the opposite side, the respective inversion periods are changed. therefore,
The duration i of the output signal (positive amplitude) of the Noritsubu flop 26L on the left microphone 2OL side located far from the sound source becomes shorter, and as a result, the rotation duration of the right motor 3BH changes to the left motor 38L. It will be shorter compared to

As a result, the left motor 38L rotates longer than the right motor 38R, so the dog IO changes direction to the right.

That is, the dog 10 changes its running direction toward the direction of the sound source.

Also, the output terminal of 34R is reset)
・Noritsubu flop 28H via diode 35R
Since the output signal returns to 0 level, the diode 35R is grounded and the flip-flop 28R is reset.

As can be understood from the detailed operation described above, if the sound source is on the left side, the above operation will be reversed, and the right side motor 38R will rotate for a longer time than the left side motor 38L. The dog lO begins to displace its direction to the left.

The present invention is not limited to the embodiments described above, and various modifications may be made.

For example, in the above example, the duration of the output signal of the flip-flop of the microphone circuit closer to the sound source was long;
If this is shortened by processing it using a known circuit, for example, the right motor 38R can be connected to the right processing circuit.

Also, instead of a dog, microphones can be built into the left and right headlights of a car, and microphones can also be built into the doll's eyes.

Further, the direction may be changed in the direction opposite to the direction in which the sound is generated.

As described in detail above, the running toy of the present invention makes it possible to electronically identify the direction of the sound signal generated from the sound source. Because it comes in handy, you can feel familiar with it as a toy. Furthermore, it has the advantage of being highly effective as an educational toy.

[Brief explanation of the drawing]

Figure 1 is a front view of one embodiment of the running toy of the present invention, Figure 2 is a bottom view of the toy in Figure 1, Figure 3 is a plan view of the toy in Figure 1, and Figure 4 is the first running toy. FIG. 3 is a circuit diagram of one embodiment of a direction conversion circuit that may be used. Code 10... I5Z, 16.17.1 B... Drive wheel, 20R, 20L... Microphone, 22R,
22L, 23R, 23L, 36R, 3eL...
・Transistor, 25R, 25L, 28R, 28L...
・Integrator circuit, 2eR, 26L...flip-flop,
32R, 32L... Differential circuit, 38R, 38L...
Motor, 30R, 30L, 34R, 34L...and9 gate Patent applicant Takara Co., Ltd. Agent Patent attorney Mikio Segawa

Claims (1)

[Claims] A pair of sound-to-electrical conversion elements installed at different distances from the location of the sound source, and converting analog electrical signals with different output levels obtained from these pair of sound-to-electrical conversion elements into predetermined digital electrical signals. A pair of amplification and conversion circuits that convert the output signals from the pair of amplification and conversion circuits into digital signals with different periods, and a pair of period conversion circuits that convert the output signals from the pair of amplification and conversion circuits into digital signals with different periods, and digital output signals with different periods obtained from these period conversion circuits. It comprises at least a direction conversion circuit having a switching circuit for controlling a driving wheel motor at 0N10jF, and the period of the output signal on the side of the sound-to-electric conversion element located closer to the sound source is
The drive motor is turned on by utilizing the fact that the period of the output signal is different from that of the sound-to-electric conversion element located far away.
A traveling toy characterized by having different durations controlled.