JPH077690U - Power supply over detection circuit for gaming machines - Google Patents

Abstract

(57) [Summary] [Purpose] In gaming machines such as pachinko machines, stabilize the detection that the power supply voltage exceeds a specified value. [Structure] When the power supply voltage exceeds a predetermined value, the output of the operational amplifier 13 is inverted after a lapse of time determined by the time constant circuit formed by the capacitor C and the resistor R1, and the logic circuit 14 outputs a signal indicating this. This signal is sent via bus 6 to C
The data is input to the PU 1 or the like, whereby the CPU 1 or the like performs a predetermined operation or stops the operation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a power supply over detection circuit for a game machine, and more particularly to a power supply over detection circuit for a game machine capable of stably detecting a power supply abnormality.

[0002]

[Problems to be solved by conventional techniques and devices]

 In recent years, in gaming machines such as pachinko machines, control devices that use a micro computer have been used to control the operation of the gaming machine body and display. In such a control device, fluctuations in the power supply voltage (generally +5 V) applied to the CPU and other electronic circuits, especially overvoltage, causes various problems such as malfunction of each electronic circuit. , Detection has become very important.

Conventionally, various techniques have been used for such power supply over-detection, but the present invention aims to provide means for more stable detection of power supply abnormality.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the power supply over detection circuit of the gaming machine according to the present invention detects the power supply voltage exceeding a predetermined value in a gaming machine such as a pachinko machine and operates and displays the gaming machine body. A means for sending out a predetermined abnormality detection signal to the control device for controlling the above and a means for delaying the signal sending out by the signal sending means by a predetermined time are provided.

[0005]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example in which an embodiment of a power supply over detection circuit according to the present invention is applied to a microcomputer application circuit for controlling a pachinko machine.

In the figure, 1 is a CPU, 2 is a ROM, 3 is an address decoder, 4 is an input circuit, 5 is an output circuit consisting of a plurality of latch circuits, and these are connected by a bus 6. The input circuit 4 and the output circuit 5 are connected to a driver circuit on the pachinko machine body 7 side, an indicator, a sensor, and the like. An acoustic control circuit 8 is connected to the bus 6, and an output of the acoustic control circuit 8 is connected to an acoustic circuit 9 arranged in the pachinko machine body 7. Further, a periodic reset circuit 10 for periodically resetting the CPU 1 and an initialization reset circuit 11 for resetting the output circuit 5 when the power is turned on are also provided.

A power supply over detection circuit 12 is further connected to the bus 6. This circuit includes an operational amplifier 13 in which positive feedback is applied to the non-inverting input terminal. The non-inverting input terminal of the operational amplifier 13 receives the reference voltage generated by the resistor R1 and the Zener diode ZD connected to the + 5v power source, and the inverting input terminal is divided by the resistors R2 and R3 also connected to the + 5v power source. The voltage is on. Further, a + 5v power source is applied to the non-inverting input terminal of the operational amplifier 13 via the resistors R4 and R5, and the resulting voltage is applied in addition to the feedback voltage. Further, the output of the operational amplifier 13 is connected to the logic circuit 14, and the output of the logic circuit 14 is connected to the bus 6.

Further, the capacitor C connected to the non-inverting input terminal side of the operational amplifier 13 forms a time constant circuit together with the resistor R1, and when the power supply voltage changes, the change is applied to the non-inverting input of the operational amplifier 13. Can be delayed for a predetermined time. Of course, the delay time can be changed by appropriately selecting the values of the capacitor C and the resistor R1.

In the power supply over detection circuit 12, the operational amplifier 13 performs a Schmitt trigger operation, and when the power supply voltage exceeds + 5v, the operational amplifier is operated after a lapse of time determined by the time constant circuit formed by the capacitor C and the resistor R1. The output of 13 is inverted and lowered, and a signal indicating that the power supply voltage has exceeded + 5v is output from the logic circuit 14 and is input to the CPU 1 and the like via the bus 6, whereby the CPU 1 and the like perform a predetermined operation. You will either perform or stop the operation. Of course, the pachinko machine body 7 and the acoustic circuit 9 are controlled by the operation or stop of the operation of the CPU 1 and the like. Immediately, the fluctuation of the power supply voltage of + 5v does not immediately affect the control circuit of the pachinko machine, and the fluctuation of the power supply voltage is detected even after a certain period of time. It is stable because the malfunction does not occur in the detection of power over.

In the above description, the object of implementation of the present invention is a pachinko machine, but the present invention is not limited to this, and can be applied to other types of gaming machines called slot machines and the like. Moreover, the circuit configuration of the power supply over detection circuit is merely an example, and the circuit of the present invention is not limited to this, and it can be used by a person who can be used as a means for delaying the detection of a power supply abnormality or the transmission of the detection signal. If there is one, it can be appropriately adopted.

[0011]

[Effect of device]

 As described above, the power supply over detection circuit of the gaming machine according to claim 1 detects that the power supply voltage applied to the control device that controls the operation, display, etc. of the gaming machine exceeds a predetermined value and sends it out. Since the specified abnormality detection signal is sent after delaying for a specified time, if the power supply voltage applied to the control device exceeds a specified value, the fluctuation must be detected for the first time in a state where it continues for a specified time. Therefore, there is an effect that the detection of power supply over becomes extremely stable.

[Brief description of drawings]

FIG. 1 is a circuit block diagram showing an example in which an embodiment of a power supply over detection circuit according to the present invention is applied to a microcomputer application circuit for controlling a pachinko machine.

[Explanation of symbols]

 1 CPU 2 ROM 3 Address Decoder 4 Input Circuit 5 Output Circuit 6 Bus 7 Pachinko Machine Main Body 8 Acoustic Control Circuit 9 Acoustic Circuit 10 Periodic Reset Circuit 11 Initialization Reset Circuit 12 Power Over Detection Circuit 13 Operational Amplifier 14 Logic Circuit

Claims (1)

[Scope of utility model registration request] 1. In a gaming machine such as a pachinko machine, the operation of the gaming machine body is detected when the power supply voltage exceeds a predetermined value.
A power supply over detection circuit for a gaming machine, comprising means for sending a predetermined abnormality detection signal to a control device for controlling display and the like, and means for delaying signal sending by the signal sending means by a predetermined time. .