JP2659842B2 - Gaming machine touch sensor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a gaming machine having an operation dial for driving a gaming ball launching device for a gaming machine to adjust the firing force of the gaming machine ball. The present invention relates to a touch sensor of a gaming machine for detecting whether or not a player is in contact with the operation dial and controlling the game ball launching device.

[Prior Art] In a pachinko game machine store, there are various types of pachinko games in which a game is launched by launching a game ball by a hitting ball launching device operated by a player operating an operation dial, that is, a gaming ball launching device of a pachinko gaming machine. Machine is installed.

The game ball launching device is operated by an operation dial operated by a player, and the reflection force of the game ball is adjusted. The operation dial is provided with a touch sensor having a touch plate for detecting whether or not the player is gripping the operation dial based on the presence or absence of a hand contact state. When the player turns the touch plate while touching the touch plate, the touch sensor is turned on and the game ball launching device is operated.

As a conventional touch sensor for a game machine having this kind of touch plate, for example, a touch sensor that detects a change by using a phenomenon of charging a capacitance of a human body is known. Specifically, while providing an oscillation circuit inside,
The oscillation circuit is oscillated, and when a human body or the like comes into contact with the touch plate connected to the oscillation circuit, the oscillation balance is disrupted and the oscillation is stopped, and the contact / non-contact state of the human body is detected based on whether or not the oscillation is stopped. Like that.

[Problems to be Solved by the Invention] However, the above-mentioned conventional touch sensor for a game machine has a configuration in which a contact state of a human body is detected by using a phenomenon of charging a capacitance of the human body. Therefore, since a transient charging phenomenon to the human body is used, the potential change due to the capacitance of the human body is small, and the detection sensitivity in principle is not always high. Therefore, a predetermined volume (eg, gain adjustment of an amplifier) is required for adjusting the detection sensitivity, and there is a disadvantage in terms of cost due to the provision of the volume and a problem that it takes time to adjust the volume. There was a problem to be solved.

The object of the present invention has been made in view of such circumstances,
It is an object of the present invention to provide a touch sensor of a gaming machine that can detect a contact state of a human body satisfactorily without requiring a volume for sensitivity adjustment.

[Means for Solving the Problems] In order to achieve the above object, a touch sensor of the present gaming machine has a touch sensor of a gaming machine for detecting the presence or absence of a player touching an operation dial for adjusting the firing force of a game ball. An oscillating means for oscillating a signal of a predetermined frequency, a switch switched in response to the signal, a touch sensor terminal connected between the oscillating means and the switch and capable of contacting a human body or the like, and the switch A capacitor that is connected to the touch sensor terminal via the terminal and stores the electric charge transferred from the human body or the like when the human body or the like comes into contact with the touch sensor terminal, based on a voltage change of the capacitor due to the electric charge transferred to the capacitor. Detection means for detecting the presence or absence of contact with a human body or the like.

[Operation] When a human body or the like does not come into contact with the touch sensor terminal,
Even when the switch is turned on, there is no charge from the touch sensor terminal to the capacitor, and when a human body or the like comes into contact with the touch sensor terminal, the touch sensor terminal and the switch are turned on with the switch on operation. The electric charge of the human body or the like repeatedly moves to the capacitor via the capacitor and raises the voltage at the end of the capacitor, and the presence or absence of contact with the human body or the like is detected based on the voltage change, so the human body or the like is charged. By repeatedly accumulating the charges, a large potential difference can be obtained, the detection sensitivity can be significantly increased, and a volume or the like for adjusting the sensitivity can be eliminated.

Examples Hereinafter, the present invention will be described with reference to the drawings.

FIG. 1 is a diagram for explaining the principle of the present invention. In the conventional example, utilizing the phenomenon of charging the capacitance of the human body,
Although the change is detected, the detection principle of the present invention is completely different in that the discharge principle of the electric charge charged in the human body is used. More specifically, referring to FIG. 1, reference numeral 1 denotes a touch determination circuit (touch sensor) that is built in the touch handle control device and that determines whether or not a human body touches when a hand touches the touch plate of the operation dial. The touch determination circuit 1 includes an oscillation circuit (oscillation means) 2 for oscillating a signal of a predetermined frequency, a switch 3 that is turned on when a signal oscillated by the oscillation circuit 2 is at a low level (L level), An impedance circuit 6 including resistors R ₁ , R ₂ and a diode D, for example, provided between the circuit 2 and the switch 3 and connected to a touch sensor terminal 5 with which the human body 4 contacts, and the impedance circuit 6 is connected. A capacitor 7 connected to the other end of the switch 3 for storing the charge stored in the capacitance (Cex) 4 of the human body
(C ₀ ). In this case, the oscillation circuit 2
The pulse signal oscillated by the switch 3 is supplied to the switch 3 via the impedance circuit 6, and the touch sensor terminal 5 to which the human body 4 can come into contact is connected to the switch 3
Is connected to a capacitor 7 (C ₀ ) provided on the output side of.

According to such a configuration, when there is no capacitance (Cex) of the human body 4 at the touch sensor terminal 5 (that is, when the player is not in contact with the touch handle), it is turned on / off in synchronization with the pulse signal. When the switch 3 to be turned on is turned on, the potential of the touch sensor terminal 5 is at the L level, so that the capacitor 7 (C ₀ ) is not charged and 0 V
It has become.

Then, the capacitance (Cex) of the human body 4 is applied to the touch sensor terminal 5.
When the switch 3 is turned on, the electric charge charged to the capacitance (Cex) of the human body 4 when the switch 3 is turned on is changed to the touch sensor terminal 5,
Go through the impedance circuit 6 and the switch 3 to the capacitor 7 (C _0), stored in the capacitor 7 (C _0). This movement of the charge is repeated with the ON operation of the switch 3 according to the oscillation frequency of the pulse circuit 2 as long as the capacitance (Cex) of the human body 4 is connected to the sensor terminal 5,
The voltage at the end of the capacitor 7 (C ₀ ) is increased. Next, if the voltage at the end of the capacitor 7 is measured using an appropriate voltage determination means, the presence or absence of contact with the touch sensor terminal 5 of the human body 4 can be detected with high sensitivity.

Next, a touch sensor based on the above principle will be described as an embodiment.

2 to 4 are views showing an embodiment of the touch sensor according to the present invention, and FIG.
FIG. 4 shows a circuit diagram thereof, and FIG. 4 shows a voltage waveform diagram at each measurement point.

The touch handle control device 11, as shown in FIG.
A rectifier circuit 12 for rectifying the 24 V AC supplied to the control device 11 to a DC, and a rectified output (input voltage) rectified to a DC (input voltage) and a set voltage that is stably fixed with respect to a change in load (for example, A constant voltage circuit 13 for supplying 12V), a power supply confirmation circuit 14 for confirming that the rectifier circuit 12 and the constant voltage circuit 13 are operating normally and a predetermined power is being supplied, and internally oscillating a predetermined frequency. An oscillation circuit (oscillation means) 15 and a touch input detection circuit 17 for detecting whether or not a human body has touched a touch plate (touch sensor terminal) 16 based on an output of the oscillation circuit 15 have a touch input detection circuit 17 for detecting the presence or absence of a human body contact. A touch determination circuit (touch sensor) 18 for determining, a driver 19 for amplifying the output level of the touch determination circuit 18 to a magnitude sufficient to drive an output relay circuit 21 described later, and the driver 19 operates and the relay operation is normal. That is A relay operation check circuit 20 to be recognized, and an output relay circuit 21 for opening and closing a power supply path of power supplied to a motor for launching a ball game ball based on an output of a touch input determination circuit 18 driven by a driver 19. Have been. A high-voltage input protection circuit for protecting internal circuit elements when a high voltage is applied from the touch plate 16 to the touch input detection circuit 17.
22 are installed. Further, the output relay circuit 21 is provided with a back electromotive voltage protection circuit 23 for preventing the destruction of the internal circuit due to the back electromotive voltage of the coil generated when the output relay is turned off.

FIG. 3 shows a circuit diagram of the touch handle control device 11.

As shown in the figure, the touch handle control device 11 has the above-described circuits therein, that is, a rectifier circuit 12, a constant voltage circuit 13,
Power supply confirmation circuit 14, oscillation circuit 15, touch input detection circuit 17,
A driver 19, a relay operation check circuit 20 and an output relay circuit 21 are provided, and power supply output terminals 31 and 3 for driving a motor are externally provided.
2. It has power supply input terminals 33 and 34 for supplying power and an external terminal 35 to which the touch plate 16 is connected.

The rectifier circuit 12 is a low-voltage AC power supply (for example, 24 V)
24V AC supplied from the power input terminals 33 and 34 connected to
Intended to for rectifying the DC, for example, from the rectifier diode D ₁₁ to D _14, fast diode D ₁₅ for switching regulators, capacitor C ₁₂ for removing a high-frequency absorbing the capacitor C ₁₁ and surge for smoothing It is configured.

The constant voltage circuit 13 is for supplying a constant voltage (for example, 12 V) stably with respect to load fluctuations and input voltage fluctuations. For example, the three-terminal regulator 41 and the transient characteristics of output change are enhanced. and a capacitor C ₁₃ for.

The output voltage stabilized by the constant voltage circuit 13 (DC12
V) is supplied to the oscillation circuit 15 and the touch input detection circuit 17 via the power confirmation circuit 14 composed of the light emitting diode 51 and a resistor R _11. The light emitting diode 51 emits light when a predetermined voltage is output from the constant voltage circuit 13 to check a power supply state.

The oscillation circuit 15 has a predetermined oscillation frequency (for example, 14.8
KHz) signal is oscillated a, and outputs a pulse signal based on the vibration-emitting downstream of the touch input detection circuit 17, specifically, the Schmitt trigger comprising a Schmitt trigger 61, a capacitor C ₂₁ and resistor R ₂₁ an oscillation section 62, a Schmitt trigger 63 for waveform-shaping the output of the emitting Fubu 62 to a pulse signal, the transistor switch comprising transistors Tr _1, resistors R _22, R _23, R ₂₄ and speed-up capacitor C ₂₂ Metropolitan And a unit 64.

The collector of the transistor Tr ₁ is connected to the input side of the touch input detection circuit 17 as an output of the oscillation circuit 15. The touch input detection circuit 17 includes the Schmidt
It has a switch function that turns on when the pulse signal is at the L level in response to the pulse signal generated by the oscillation of the trigger oscillating unit 62, an output capacitor that stores the charge of the human body capacitance (Cex), and the like. PNP transistor (switch) Tr ₂ , output capacitor C ₀ , capacitors C ₃₁ , C ₃₂ , C ₃₃ , diode D ₂₁ , resistors R ₃₁ -R ₃₇ and Schmitt triggers 71, 72, and the touch input detection high voltage input protection circuit 22 composed of a protective diode D _31, D ₃₂ to protect the internal circuit from the high voltage applied from the outside is inserted into the circuit 17. Moreover, the terminating side of the output terminal of the three-terminal regulator 41 supplies a constant output voltage is grounded via a capacitor C _31. Also, the diode D _21, capacitor C ₃₂ and resistor R ₃₁ to R ₃₄ is equivalent to the impedance circuit 6 shown in FIG. 1, suitably the PNP transistor Tr ₂ in response to the operation of the transistor Tr ₁ This is a circuit for turning on / off. Further, the resistor R ₃₁ wherein transistor Tr ₁ in the collector (output side of i.e., the oscillation circuit 15), the diode D
PNP transistor for switching through ₂₁ and resistor R ₃₂
It is connected to the emitter of Tr ₂ and between the diode D ₂₁ and the resistor R ₃₂ , the human body comes in contact via the input protection resistor R ₃₅ , the DC component cutting capacitor C ₃₃ and the external terminal 35. The touch plate 16 to be obtained is connected. The output capacitor C ₀ is connected to the collector of the PNP transistor Tr _2.
Is connected, and the output capacitor C ₀ is a PNP transistor Tr ₂
By the ON operation of the touch plate 16, the external terminal 35,
Capacitor C ₃₃ , resistors R ₃₅ and R ₃₂ and PNP transistor Tr ₂
The electric charge which has moved from the human body through is stored. Further, the collector of the PNP transistor Tr ₂ is be connected to the driver circuit 19 through a resistor R ₃₇ and the Schmitt trigger 71, the collector potential of the is charged charge to the output capacitor C ₀ transistor Tr ₂ is When it rises, the transistor Tr _{3 in the} driver circuit 19 (described later)
Turn on. The Schmitt triggers 71 and 72 are inserted for waveform shaping of the output signal. Moreover, the output capacitor C ₀ and resistor R ₃₆ having a relatively large resistance in parallel are connected, the transistor Tr ₃ of the output to the driver circuit 19 charges from the human body is not supplied will be described later decreases There when off, appropriately discharge the output capacitor C ₀ and the current in a closed loop including a resistor R ₃₆ to flow the output capacitor C ₀ of the charge.

Said driver circuit 19, which drives large enough to drive the output relay 92 of the transistor Tr ₂ of the output signal of the touch input detection circuit 17 based on the collector potential output relay circuit 21 (described later) in, composed of medium power transistor Tr ₃ and resistor R _41.

Wherein the collector of the transistor Tr _3, the rectifier diode D _11, D the output relay circuit 21 which is driven by a power supply after rectification of ₁₂ is connected, the relay operation of the output relay circuit 21 light-emitting diodes 81 And a relay operation check circuit 20 including a resistor R51.

The output relay circuit 21 is for opening and closing a power supply path to a game ball launching motor (not shown) in response to the determination result of the touch determination circuit 18, and for example, when non-conducting (when demagnetized). Switch 91 is turned off and power is supplied (excitation)
And an output relay 92 for turning on the switch 91. A diode D ₄₁ is connected in parallel with the output relay 92.
Counter electromotive voltage protection circuit 23 composed of is provided, destruction such as transistors Tr ₃ by the counter electromotive voltage generated upon conducting off of the output relay 92 by the reverse electromotive voltage protection circuit 23 is prevented.

 Next, the operation will be described.

The 24 V AC supplied to the input terminals 33 and 34 of the touch handle control device 11 as power for power supply is rectified to DC by the rectification circuit 12 and then input to the constant voltage circuit 13. The constant voltage circuit 13 is always stable and constant with respect to fluctuations in the rectified output and load input to the constant voltage circuit 13 (for example,
12V) to the touch determination circuit 18 at the subsequent stage,
The operation is confirmed by the power supply confirmation circuit 14.

The oscillation circuit 15 and the Schmitt trigger 61 provided in the preceding stage in the Schmitt a capacitor C ₂₁ and resistor R ₂₁ is inserted between the input and output of the trigger 61 the delay circuit by a predetermined frequency (e.g., 14.8KHz) The signal is oscillated. The oscillating frequency signal generated by the oscillating unit 62 in which the Schmitt trigger is oscillated is shaped into a pulse signal having a shape close to a square wave by the next Schmitt trigger 63, and then the transistor switch unit serving as the output stage of the oscillating circuit 15 Entered in 64.

Waveform-shaped oscillation frequency signal is input to the base of the transistor Tr ₁ via the resistor R ₂₃ of the transistor switch 64 as a pulse signal, the transistor T and a transistor Tr ₁ is turned on / off according to the input level
reveal a predetermined potential to r ₁ of the collector (see FIG. 3 A point). Thus the pulse signal is output is amplified to a sufficient magnitude to turn on / off the PNP transistor Tr ₂ which is a switch to the touch input detection circuit 17. Specifically, when the oscillation frequency is at the high level (H level), the voltage inverted to the L level by the Schmitt trigger 63 is applied to the base of the transistor Tr1.
Accordingly, the collector potential of the transistor Tr _1, the transistor Tr ₁ without resulting voltage drop in the resistor R ₂₂ turned off (i.e., the output of the oscillation circuit 15) is H-level (in this case, about 12
V). Also, when the oscillation frequency is L level, the voltage which is inverted to the H level is applied to the base of the transistor Tr ₁ by Schmitt trigger 63, its collector potential transistor Tr ₁ is turned on L level (this About 0V). Thus, the transistor Tr
An output voltage corresponding to the frequency signal oscillated by the oscillating unit 62 appears at _one collector. Incidentally, the collector potential of the transistor Tr ₁ is not that the potential level or the like is changed by the presence or absence of a touch.

The output of the oscillation circuit 15 is the resistance of the touch input detection circuit 17
R _31, while the input to the emitter of the PNP transistor Tr ₂ via the diode D ₂₁ and the resistor R _32, is input to the base of the PNP transistor Tr ₂ via the resistor R ₃₃ and capacitor C _32. Therefore, when the oscillation frequency is at the H level and the output of the oscillation circuit 15 is at the H level, an H level voltage is applied to the base of the PNP transistor Tr ₂ , so that the transistor Tr ₂ is turned off and the oscillation is stopped. a state in which electrically disconnected from the circuit 15 side and the rear stage of the output capacitor C ₀ side. On the other hand, when the oscillation frequency is at the L level and the output of the oscillation circuit 15 is at the L level, the PNP transistor T
transistor Tr ₂ becomes the voltage of L level is applied to the base of r ₂ is in a state of being electrically connected to the on-and the oscillation circuit 15 and output capacitor C ₀ side. That is, only when the oscillation frequency is at the L level, the PNP transistor Tr ₂
And thus the output capacitor C ₀ and the oscillation circuit 15 is turned on is connected.

The oscillation circuit 15 and the output capacitor in the above connection relationship
Between C ₀ (in this embodiment, before the resistor R ₃₂ connected to the emitter of the transistor Tr ₂ ) (see point B in FIG. 3), an external terminal 35, a DC cut capacitor C ₃₃ and protection is connected to the touch plate 16 body may contact through the use resistor R _35, the following operation is performed by the presence or absence of human contact on the touch plate 16.
When the human body is not in contact with the touch plate 16 (that is, when the electric charge charged to the human body is not applied to the external terminal 35), it is considered equivalent to the case where the touch plate 16 is not connected to the touch input detection circuit 17. At this time, the potential at the point B in FIG.
OUCH ". When the human body is not connected to the touch plate 16 as shown in" NO TOUCH "in FIG. 4 (B), the output waveform of the oscillation circuit 15 is substantially the same as that shown in FIG. 4 (A). When the human body is not touched, the output of the oscillation circuit 15 is at H level and PN
Of course when the P transistor Tr ₂ is turned off, the oscillation circuit 15 outputs transistor Tr ₂ is turned on route to the touch plate 16 to the transistor Tr ₂ ~ output capacitor C ₀ is closed at the L level since the a charge on the touch plate 16 also is not applied when the capacitor C ₀ is not to be charged by the discharge from the human body. That is, the pulse signal oscillated by the oscillation circuit 15 the transistor Tr ₂ is turned on as a switch only when the L level, since the pulse signal is at an H level is also turned off the transistor Tr _2, Fig. 3 C Output capacitor C ₀ shown at the point
The potential level of the portion is kept at a low potential (about 3 V) (see FIG. 4 (C)).

On the other hand, when the human body comes into contact with the touch plate 16 (that is, when the electric charge charged to the human body is applied to the external terminal 35), the potential at the point B in FIG. As shown in "TOUCH", the potential at the L level rises, the potential difference between the H level and the L level becomes small, and a state occurs where oscillation occurs near the H level. Therefore, the oscillation circuit 15
The output shifts from H level to L level and the transistor Tr ₂
There is turned on, the output capacitor C charges charged in the human body through the touch plate 16 to the transistor Tr _{2 0}
Go to be stored in the output capacitor C _0. This movement of the charge is repeated by the switching operation of the transistor Tr _2, as a result, the potential level of the output capacitor C ₀ portion shown in FIG. 3 point C rises to a high potential (about 7V) (FIG. 4 (C ) reference) it should be noted that this potential level at the point C is changed according to the oscillation frequency of the oscillation circuit 15, the potential level for accumulating increases to the output capacitor C ₀ by repeating the movement of the charge higher oscillation frequency quickly Become higher. Therefore, if the oscillation frequency of the oscillation circuit 15 is increased, a detection output with a large dynamic range can be obtained.
The detection accuracy can be further improved.

Voltage shown in FIG. 3 C point is input to waveform shaping and buffered by Schmitt trigger 71 and 72 after passing through the resistor R ₃₇ to the driver circuit 19. That is, "NOT
Transistor Tr ₃ for low voltage applied to OUCH "sometimes transistor Tr ₃ is turned off, thus the output relay circuit 21
Is deactivated (demagnetized). As a result, the switch 91 linked with the output relay 92 is turned off, the power supply path of the game ball launching motor is opened, and the operation of the motor is stopped. Further, "TOUCH" transistor Tr ₃ because a high voltage is applied to the transistor Tr ₃ when is turned on, the output relay 92 is energized (excited). As a result, the switch 91 is turned on, the power supply path of the motor is closed, and the motor becomes operable.

As described above, the touch sensor 18 according to this embodiment includes:
An oscillation circuit 15 for oscillating a signal of a predetermined oscillation frequency, a transistor Tr ₂ which is switched in response to the signal of the oscillation frequency, is connected between the oscillation circuit 15 and the transistor Tr _2, a human body or the like is contacted With a possible touch plate 16,
Wherein through the transistor Tr ₂ is connected to the touch plate 16, storing the electric charge from the human body condenser
C ₀ , the transistor with respect to the oscillation frequency
While switching Tr ₂ , the human body
The touch plate 16 is not contacted with the touch plate 16 because it is configured to detect the presence or absence of contact with the human body based on the voltage change of the capacitor C ₀ due to the transfer of electric charge from the human body to the capacitor C ₀ when it comes into contact with the touch plate 16. In this case, even when the transistor Tr ₂ is turned on, there is no charge from the touch plate 16 to the capacitor C _0, and when the human body comes into contact with the touch plate 16, the transistor
And with the on-operation Tr ₂ via the touch plate 16 and the transistor Tr ₂ charges with the human body in the capacitor C ₀ raises the voltage of the capacitor C ₀ end moves repeatedly, the human body on the basis of the voltage change The presence or absence of contact is detected, so a large potential difference can be obtained by repeatedly accumulating the electric charge charged in the human body, and the detection sensitivity can be remarkably increased, and the volume for sensitivity adjustment etc. It can be unnecessary.

Although the example in which the touch determination circuit (touch sensor) 18 is installed in the steering wheel control device 11 is shown, the touch determination circuit (touch sensor) 18 may be installed in a game ball launching device, or is not limited thereto. Or may be attached as a single unit.

Although an oscillation circuit using a Schmitt trigger is used as an example of the oscillation means, any oscillation means that oscillates a predetermined oscillation frequency signal may be used, for example, a multi-stage inverter. Oscillation circuits using
An LC oscillation circuit, a crystal oscillation circuit, or the like may be used.

Although an example using a PNP transistor has been described as an example of the switch, the switch is not limited to a transistor as long as the switch can be switched according to the oscillation frequency of the oscillation unit. Further, in this embodiment, since a switch (PNP transistor) that is turned on when the oscillation of the oscillation means is at the L level is used, there is an effect that the circuit configuration itself can be simplified. Any switch may be used as long as the connection between the touch plate and the capacitor can be switched according to the frequency.

In the above-described embodiment, the touch sensor does not require the sensitivity adjustment function. However, depending on the game store, the game (fire) may be tolerated even without touching the steering wheel. As the sensor, a sensor to which sensitivity adjustment means is further added in addition to the present touch sensor may be used.

[Effects of the Invention] The touch sensor of a gaming machine according to the present invention includes an oscillating unit that oscillates a signal of a predetermined frequency as described above, a switch that can be switched in response to the signal, the oscillating unit and the switch. And a touch sensor terminal that can be contacted by a human body or the like, and a charge that is connected to the touch sensor terminal via the switch and moved from the human body or the like when the human body or the like contacts the touch sensor terminal. When the touch sensor terminal is not in contact with the touch sensor terminal, the storage capacitor and the detection means for detecting the presence or absence of contact with the human body or the like based on the voltage change of the capacitor due to the transfer of electric charge to the capacitor are provided. Even when the switch is turned on, there is no charge from the touch sensor terminal to the capacitor, and the human body etc. When the switch is turned on, the electric charge of the human body or the like repeatedly moves to the capacitor via the touch sensor terminal and the switch as the switch is turned on to increase the voltage at the capacitor end, and based on the voltage change, Since the presence or absence of contact with the human body or the like is detected, a large potential difference can be obtained by repeatedly accumulating the electric charge charged in the human body or the like, and the detection sensitivity can be significantly increased, and the sensitivity adjustment can be performed. Volume and the like can be made unnecessary.

Therefore, by eliminating the need for a volume or the like for sensitivity adjustment, it is possible to reduce the cost of the gaming machine and to facilitate maintenance.

[Brief description of the drawings]

FIG. 1 is a view for explaining the principle of the present invention, and FIGS. 2 to 4 show embodiments of the present invention. Among them, FIG. 2 shows a touch handle control having a touch sensor. FIG. 3 is a block diagram of the device, FIG. 3 is a circuit diagram of a touch handle control device having a touch sensor, and FIG. 4 is a voltage waveform diagram of each measurement point of each circuit of the touch handle control device. 1. Touch determination circuit (touch sensor), 2. Oscillation circuit (oscillation means), 3. Switch, 4. Human body, 5.
Touch sensor terminal, 7: Capacitor, 11: Touch handle control device, 15: Oscillation circuit (oscillation means), 16:
Touch plate (Touch sensor terminal), 17: Touch input detection circuit, 18: Touch determination circuit (Touch sensor),
Tr ₂ …… PNP transistor (switch), C ₀ …… Output capacitor (capacitor).

Claims (1)

(57) [Claims] 1. A touch sensor of a gaming machine for detecting the presence or absence of contact of a player with an operation dial for adjusting a firing force of a game ball, wherein: an oscillating means for oscillating a signal of a predetermined frequency; A switch to be switched, a touch sensor terminal connected between the oscillating means and the switch and capable of contacting a human body or the like, and a touch sensor terminal connected to the touch sensor terminal via the switch, and a human body or the like connected to the touch sensor terminal. A capacitor for storing electric charge transferred from a human body or the like when touched, and detecting means for detecting the presence or absence of contact with a human body or the like based on a voltage change of the capacitor due to the transfer of electric charge to the capacitor. Game machine touch sensor.