KR100993040B1 - Multichannel electric power source stabilization development for slot mashine - Google Patents

Abstract

PURPOSE: A multi-channel electric power stabilizer is provided to improve efficiency by removing a loss due to surge. CONSTITUTION: A tab transformer(101) outputs a distribution voltage with a different voltage level. First to third channel transformers output a control voltage for controlling a distribution voltage. First to third voltage controllers(105-107) control the distribution voltage by using the control voltage outputted from the first to third channel transformers. First to third selecting units select one of the distribution voltages controlled by the first to third voltage controllers. A timing setting unit sets the changeover timing of the first to third channel transformers.

Description

MULTICHANNEL ELECTRIC POWER SOURCE STABILIZATION DEVELOPMENT FOR SLOT MASHINE}

The present invention relates to a power supply stabilization device, and in particular, a device for supplying a stable power of 24 ± 1% of alternating current (AC) used in a slot machine, and outputs a plurality of different power to one equipment at the same time in multiple channels It relates to a power stabilization device that can be processed.

In general, an automatic voltage regulator (AVR) is a device that maintains an AC power supply voltage within an appropriate range, and is widely used for power stabilization in equipment that requires precise operation such as a slot machine. .

Slot machines require an AC 24V 300VA power supply. Accordingly, in order to use the AC 100V supplied from the outside as a power source, a power stabilization device for converting the AC 100V into the AC 24V, such as a voltage drop transformer, is used.

The reason why the power supply stabilization device is required for the slot machine is that a DC motor built into the slot machine malfunctions due to an unstable power supply, causing a win rate error of the slot machine. Accordingly, it is urgent to develop a power supply stabilization device for a slot machine because it can act as an obstacle for owners who want stable profits.

The operation of the existing electrical and electronic devices is used to adjust the constant voltage by switching the tap according to the voltage fluctuation of the power supplied and the load condition used. This is a technology that is being used in power savers, power stabilizers, and other power supplies. However, this method has a problem in that power consumption is increased due to loss of power in the process of manually or automatically switching taps by frequently checking a variable voltage.

1 is a configuration diagram schematically illustrating a power stabilization apparatus according to the prior art.

Referring to Figure 1, the power stabilization device according to the prior art is the rear end by the inverted current caused by the collision caused in the process of switching the tap manually or automatically according to the voltage fluctuation of the power supplied and the load state used Load resistors L1 to L5 are installed in the voltage control terminal to prevent the devices installed in the device from being destroyed. The load resistors L1 to L5 prevent the inverted current from entering the device of the rear end and damaging the device.

However, when the load resistors L1 to L5 are installed in the voltage control terminal as in the power supply stabilization device according to the prior art, the size of the device is increased by the load resistors L1 to L5, which makes it difficult to integrate. In the process of converting inverted current into thermal energy by load resistors (L1 to L5), heat generation may be severely affected, which may adversely affect other devices, and power consumption may increase due to load resistors (L1 to L5). There is. In addition, when the load resistors L1 to L5 are provided, there is a problem that the manufacturing cost of the device increases.

Therefore, the present invention has been proposed to solve the above problems according to the prior art, and has the following objects.

First, an object of the present invention is to provide a multi-channel power stabilization device for a slot machine that can increase the efficiency by removing the losses caused by surge (surge) generated during the power stabilization process.

Second, another object of the present invention is to provide a multi-channel power stabilization apparatus for a slot machine capable of sequentially processing a plurality of channels in time division, and performing power stabilization for each channel.

According to an aspect of the present invention, there is provided a single winding transformer having a plurality of taps, and receives a power supply voltage and transforms the power voltage to a constant voltage level to output a divided voltage having different voltage levels to the taps. And a lottery transformer connected in series with each other and provided with a surge killer at an output terminal, and a control side of each of the lottery transformers is turned on / off according to a first control signal to control connection with each tap of the tap transformer. First to third channel transformers respectively outputting an adjustment voltage for adjusting the distribution voltage in a manner of receiving the power supply voltage and the first to the third control signals in response to input second control signals; First to third voltage adjusting units for adjusting the distribution voltages using the adjustment voltages output from the three-channel transformers, respectively; A first to third selector for selecting and outputting any one of the divided voltages that are adjusted and output through the first to third voltage adjusters in response to the third control signal, and the first to third voltage adjusters A switching timing of the transformer for the first to third channels in order to prevent a collision between taps in the switching period of the regulating voltage in the voltage measuring unit for measuring the divided voltage currently output from the controller and the first to third voltage adjusting units. And a second control signal for adjusting the divided voltage such that the divided voltage is close to the target voltage by comparing the set timing setting unit and the divided voltage measured by the voltage measuring unit with the target voltage. The first agent controlling the operation of the control side of the transformer for the first to third channels in accordance with the switching timing set by the timing setting unit; Generating a signal, and provides the first to the multi-channel power stabilization for a slot machine comprising a control unit that generates and outputs the third control signal for controlling the operation unit 3, select device.

According to the present invention, the following effects can be obtained.

First, according to the present invention, it is possible to increase the efficiency by eliminating the loss caused by the surge generated during the power stabilization process.

Second, according to the present invention, a plurality of channels may be processed sequentially in time division, and power stabilization may be performed for each channel.

Third, according to the present invention, it is possible to provide a product having an output voltage change rate of less than 1% at an input voltage change rate of 10%, and to reduce power consumption by minimizing its own power consumption.

Fourth, according to the present invention, the development of a three-channel automatic voltage regulation system can improve the quality of the power source at the same time using a plurality of precision equipment.

Fifth, according to the present invention, it is possible to reduce equipment costs and maintenance costs.

Sixth, according to the present invention, it is possible to extend the life of the load through a stabilized power supply.

Seventh, according to the present invention, it is possible to reduce the probability of malfunction due to an unstable power supply.

Eighth, according to the present invention, it is possible to improve the power saving can be applied to the lighting power saving device market.

Ninth, according to the present invention, it is possible to improve the power saving can be applied to the TV production inspection line.

As described above, the power stabilization device is a widely known device and is used in industrial sites, but the following matters should be considered when applying it to a Japanese slot machine.

A power-saving power stabilization device has been developed that has extremely low power consumption compared to the power stabilization device, and its capacity is 1kVA. However, currently available commercially available slot machine capacity of 300kVA, the power supply stabilizer having a capacity of 1kVA should use three transformers in combination. As a result, capacity of about 100VA wasted as power consumption, and the demand was limited because it was difficult to cope with individual three transformers.

In this situation, when the individual power stabilization device for 300VA is manufactured, the price competitiveness of each power stabilization device is lowered due to the increased control factors. Therefore, it is difficult to achieve a different result compared to the power stabilization device of 1kVA. Accordingly, in view of these requirements, the present invention proposes a power supply stabilization apparatus capable of driving three 300VA three transformers through one control board.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the technical idea of the present invention. In addition, the parts denoted by the same reference numerals (or reference numerals) throughout the specification represent the same elements.

Example

2 is a block diagram illustrating a multi-channel power stabilization device for a slot machine according to an embodiment of the present invention, Figure 3 is a circuit diagram of the actual implementation of the power stabilization device shown in Figure 2, Figure 4 Fig. 3 is a circuit diagram showing the tap transformer shown in Fig. 3 and the transformer for each channel.

2 to 4, the multi-channel power stabilization device for a slot machine according to an embodiment of the present invention is composed of a single winding transformer having a plurality of taps, and receives a power supply voltage to transform a constant voltage level to the taps A tap transformer 101 for outputting distribution voltages having different voltage levels, and a lottery transformer connected in series with each other and having a surge killer installed at an output terminal thereof, and sequentially sequencing each of the lottery transformers in time division according to a first control signal. The control side is turned on / off to control the connection with each tap of the tap transformer, and for the first to third channels for receiving the power supply voltage and outputting an adjustment voltage for adjusting in a manner of adjusting or subtracting the distribution voltage. Regulated voltages output from the transformers 102, 103 and 104 and the first to third channel transformers 102, 103 and 104 respectively in response to input second control signals. Through the first to third voltage adjusting units 105, 106 and 107 for adjusting the divided voltages, and the first to third voltage adjusting units 105, 106 and 107 in response to the third control signal input thereto. Distributions currently output from the first to third selectors 108, 109 and 110 and the first to third voltage adjusters 105, 106 and 107 for selecting and outputting any one of the divided voltages that are adjusted and output. In order to prevent collisions between the taps in the switching period of the adjustment voltage in the voltage measuring unit 113 and the first to third voltage adjusting units 105, 106, and 107 that measure the voltage, respectively, the first to third channel transformers ( The timing setting unit 112 for setting the switching timings of the 102, 103, and 104 and the distribution voltage measured by the voltage measuring unit 113 are compared with each other so that the distribution voltage approaches the target voltage. Generate the second control signal to adjust the voltage, The first control signal is configured to control an operation of a control side of the first to third channel transformers 102, 103, and 104 according to the switching timing set by the dimming setting unit 112. And a controller 111 for generating and outputting the third control signal for controlling the operations of the three selectors 108, 109, and 110.

The first to third channel transformers 102, 103, and 104 are transformer killers 1021, 1031, and 1041, and surge killers 1022, 1032, and 1042 respectively provided at the output terminals of the transformers 1021, 1031, and 1041. It includes. As shown in FIG. 5, each of the surge killers 1022, 1032, and 1042 includes a first diode D1, a first resistor R1 connected in series with the first diode D1, and a first diode ( A first VRD (VRD1) connected in series with the first resistor R1 in the opposite direction to D1), a second VRD (VRD2) connected to one end of the first diode D1, and 2 is connected in series with the second resistor R2 connected in series with the VRD VRD2 and the second resistor R2 in the reverse direction to the second VRD VRD2, and one end is connected with one end of the first VRD VRD1. The second diode D2 is included.

In Japan, the supply voltage is 100V 50Hz. The surge killers 1022, 1032 and 1042 should be as if they were not at normal voltage. Therefore, since the maximum value of the effective value 100V is about 140V, the surge killer 1022, 1032, 1042 is designed to absorb the surge of 160V or more in the power supply stabilization device according to the present invention. In the present invention, the surge killer 1022, 1032, 1042 is designed using a semiconductor element, because the element such as the varistor is consumable and eventually breaks down in the power stabilization device that the surge occurs from time to time.

As shown in FIG. 5, in the present invention, VRD as a semiconductor element is used for the surge killer 1022, 1032, and 1042. In this case, as a VRD, a 160 V VRD was used to absorb a surge at a voltage of 160 V or higher. In addition, in order to prevent the VRD from conducting a steady voltage in the forward direction, a diode is configured in the reverse direction. However, when the surge killer is composed of only the VRD and the diode, the surge killer may be damaged after some time. Therefore, a resistor is formed between the VRD and the diode in order to prevent the semiconductor device such as the VRD and the diode from being damaged by an overvoltage or an overcurrent against an instantaneous surge.

However, if the resistance to the surge killer is unconditionally high, the surge killer cannot act as a surge killer. If the resistance is too low, the surge killer may be damaged by the surge, so it is necessary to design the surge killer according to its design specifications. Therefore, the resistance configured in the surge killer must be designed to meet the specifications of the VRD which is the main element of the surge killer.

The multi-channel power supply stabilization device for slot machines according to the present invention is configured as a power saving power stabilization device in consideration of voltage accuracy, response speed, cost competitiveness. In this case, the control side 1023, 1033, 1043, see FIG. 4 of the first to third channel transformers 102, 103, and 104 is temporarily turned off in order to avoid collision between the regulated voltage taps in the regulation voltage switching section. A pause time procedure is required. In this way, even if the control sides 1023, 1033 and 1043 of the first to third channel transformers 102, 103 and 104 are temporarily turned off, the actual output voltage is not significantly affected. This is because the voltage regulation range occupies a small area of the total voltage. Therefore, in some cases, even if the control sides 1023, 1033, 1043 of the first to third channel transformers 102, 103, and 104 are kept open for a long time, the power quality of the power stabilization apparatus according to the present invention. Does not affect at all.

In order to perform such an operation, in a control board having the configuration shown in FIG. 3, an algorithm for making an off state between voltage taps when switching a regulated voltage should be applied, and further, transformers 102 for first to third channels The timing of turning on / off the control sides 1023, 1033, 1043 of the 103, 104 is very important and should be programmed in consideration of the switching. Such timing is implemented in the timing setting unit 112 shown in FIGS. 2 and 3.

FIG. 6 illustrates timings for turning on / off the control sides 1023, 1033, and 1043 of the first to third channel transformers 102, 103, and 104 according to the timing set by the timing setting unit 112. Figure is shown. As illustrated in FIG. 6, for example, a process of switching from a 25V tap to a 50V tap is described according to a first control signal provided from the controller 111 based on the timing set by the timing setting unit 112. The control sides 1023, 1033, and 1043 of the first to third channel transformers 102, 103, and 104 are controlled to have the idle time DELTA t at each tap 25V, 50V. In this way, it is possible to prevent a collision between the taps when switching the regulated voltage.

7 is a flowchart illustrating the operation of the multi-channel power supply stabilization apparatus according to the present invention, and FIG. 8 is a diagram illustrating sequential control of channels CH1, CH2, and CH3 in FIG. Here, the channels CH1, CH2, and CH3 correspond to transformers for the first to third channels.

Referring to FIGS. 7 and 8, each channel CH1, CH2, and CH3 checks that the current voltage is higher or lower than the target voltage, and adds or subtracts the difference from the target voltage to the target voltage within an error range within 1%. Adjust to fit. The algorithm is executed sequentially according to each channel (CH1, CH2, CH3), but all control is performed by one process.

As shown in FIG. 7, the present voltage is measured by measuring a distribution voltage output from the first to third voltage adjusting units 105, 106, and 107 through the voltage measuring unit 113 shown in FIG. 2. That is, the current voltage corresponds to the divided voltage measured by the voltage measuring unit 113. The controller 111 analyzes the current voltage measured by the voltage measuring unit 113 and analyzes whether or not it is an appropriate voltage. At this time, the appropriate voltage means a driving voltage required by the slot machine. For example, when the change rate of the power supply voltage is 10%, the change rate of the drive voltage of the slot machine output through the power supply stabilization device may be viewed as a voltage corresponding to less than 1%.

If the current voltage is an appropriate voltage, that is, the current voltage is the same as the target voltage or the difference with the target voltage is within the allowable range, the divided voltage adjusted through the first to third voltage adjusting units 105, 106, and 107 for each channel is kept as it is. When the channel voltage is used as the driving voltage of the slot machine and the current voltage is not appropriate, that is, when the current voltage is not the same as the target voltage, the divided voltage and the first voltage distributed through the tap transformer 101 are used. To reset the adjustment voltage output through the third to third channel transformers 102, 103, and 104, and adjust the first to third voltage adjustment units 105, 106, and 107 using the divided voltage and the adjustment voltage. The current voltage is adjusted to be close to, and preferably equal to, the target voltage.

The first to third voltage adjusting units 105, 106, and 107 may include a function of converting a distribution voltage distributed through the tap transformer 101, that is, an alternating current voltage into a direct current voltage, and using the adjustment voltage when adjusting the voltage. Thus, the distribution voltage converted from the AC voltage to the DC voltage can be adjusted.

As described above, the present invention adjusts the adjustment voltage according to the current voltage to determine the appropriate voltage control width. However, in the slot machine multi-channel stabilized power supply according to the present invention, it should be considered in what form it should be driven when this basic concept is applied.

As shown in FIG. 2 and FIG. 3, the controller 111 is configured as a PIC series at 1kVA, and has been recognized for reliability. The controller 111 is configured using a PIC series microprocessor unit (MCU) (PIC16F873A). Since the unit is MHz, the entire program is rotated by one cycle. Therefore, if only the function of operation timing for each channel is normally operated, multi-channel driving may be possible without any particular problem.

First, when a power supply voltage is applied to a load through the power stabilization device according to an embodiment of the present invention, the voltage fluctuation rate is high when there is a load and each load repeats on / off. Among these, if the voltage applied to the load fluctuates for stabilization, there is a possibility that the entire power supply may have a change. Among them, the most affected position is the power supply voltage for each channel. .

Therefore, if the tap switching event for the adjustment voltage for each channel occurs, it is most stable that at least the other channel remains in its current state and does not perform the switching operation.

The response speed required by the power stabilization device according to the embodiment of the present invention is approximately 100 ms. However, the event period in which the actual switching takes place will be approximately 10 ms. As such, during the rest of the time, the MPU will only perform monitoring and display activities. Therefore, during such a spare time, by placing each event section of the other channel it is possible to minimize the interference between each channel can be operated more stably.

As shown in FIG. 8, a cyclic structure of a method in which different channels operate sequentially in a section within an event section E for each channel is shown. Channel 1 (CH1), channel 2 (CH2), and channel 3 (CH3) operate sequentially within the response time required by the power stabilizer.

Meanwhile, in FIG. 3, '114' and '115' show ground terminals of the MCU.

9 and 10 are diagrams showing a control board that actually implements a multi-channel power stabilization device for a slot machine according to an embodiment of the present invention. FIG. 9 is a board showing the voltage adjusting units 105, 106, and 107 and the control unit 111 (the state in which the microchip is not mounted), and FIG. 10 is a tap transformer 101 on the board of FIG. 3 is a diagram illustrating a system board on which the third channel transformers 102, 103, and 104 are mounted. FIG. 11 is an actual view illustrating a 300VA power stabilization device according to an embodiment of the present invention, and FIG. 12 is a view of the power stabilization device shown in FIG. 11. FIG. 13 is a diagram illustrating three slot machine transformers 201, 202, and 203 mounted on the power stabilization apparatus 100 illustrated in FIG. 11.

9 to 13, a case of the power stabilization device is configured based on test results such as the control board illustrated in FIG. 3, and a control board is mounted therein. The prototype of the power stabilization device according to the present invention may further include a control board, a connection plug, an LED lamp, a feedback connector, a power cord, and the like having the configuration shown in FIGS. 2 and 3.

Since a separate 100V: 24V transformer is mounted inside the slot machine, it is not mounted inside the power stabilizer of the present invention. However, as shown in FIG. 2, since 24 V quality is important as a slot machine, voltage can be measured through a feedback connection terminal. In this case, the voltage measurement may be measured through the voltage measuring unit 113 shown in FIG. 2, and the voltage measuring unit 113 may control the voltage adjusting units 105, 106, and 107 using the measured voltage.

As described above, the technical idea of the present invention is merely illustrative, and various changes and modifications can be made by those skilled in the art without departing from the essential characteristics of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a view showing a power stabilization device according to the prior art.

2 is a block diagram showing a multi-channel power stabilization device for a slot machine according to an embodiment of the present invention.

3 is a circuit diagram showing a configuration within a control board of the power stabilization device shown in FIG.

4 is a circuit diagram illustrating a connection configuration between the tap transformer and the first to third channel transformers shown in FIG. 4.

5 is a circuit diagram illustrating a surge killer according to an embodiment of the present invention.

Figure 6 is a schematic diagram showing the timing when switching the adjustment voltage of the first to third channel transformer in accordance with an embodiment of the present invention.

7 is a flow chart showing the operation characteristics of the power stabilization device according to an embodiment of the present invention.

8 is a timing diagram illustrating a sequential control algorithm according to an embodiment of the present invention.

9 and 10 are views showing the actual appearance of the prototype of the control board according to an embodiment of the present invention.

11 and 12 are views showing the actual appearance of the prototype of the power stabilization device according to an embodiment of the present invention.

FIG. 13 is a view illustrating an actual state in which three slot machine transformers are mounted in a power stabilization device according to an exemplary embodiment of the present invention. FIG.

<Explanation of symbols for the main parts of the drawings>

101: tap transformer

102 to 104: transformers for the first to third channels

105 to 107: first to third voltage adjusting unit

108 to 110: first to third selection units

111: control unit

112: timing setting unit

113: voltage measurement unit

Claims (2)

A tap transformer comprising a single winding transformer having a plurality of taps, the tap transformer configured to receive a power supply voltage and convert the power voltage into a constant voltage level to output a divided voltage having different voltage levels to the taps; It consists of a lottery transformer connected in series with each other and a surge killer is installed at the output terminal, and the control side of each of the lottery transformer is sequentially turned on and off in time division according to the first control signal to control the connection with each tap of the tap transformer. First to third channel transformers receiving the power supply voltage and outputting adjustment voltages for adjusting the distribution voltage in a manner of adjusting or subtracting the distribution voltage; First to third voltage adjusting units configured to adjust the divided voltages using the adjustment voltages respectively output from the first to third channel transformers in response to the second control signals respectively input; First to third selectors configured to select and output any one of the divided voltages which are respectively adjusted and output through the first to third voltage adjusting units in response to the third control signals inputted to the respective first and third control signals; A voltage measuring unit measuring the divided voltage currently output from the first to third voltage adjusting units; A timing setting unit configured to set a switching timing of the transformer for the first to third channels in order to prevent collision between taps in the switching period of the adjustment voltage in the first to third voltage adjusting units; And Comparing the divided voltage measured by the voltage measuring unit with the target voltage, generating the second control signal for adjusting the divided voltage such that the divided voltage is close to the target voltage, and switching set by the timing setting unit. Generate the first control signal for controlling the operation of the control side of the first to third channel transformer in accordance with the timing, and generate and output the third control signal for controlling the operation of the first to third selector Control unit Multi-channel power stabilization device for a slot machine comprising a. The method of claim 1, The surge killer, A first diode; A first resistor connected in series with said first diode; A first voltage reference diode (VRD) connected in series with the first resistor in a reverse direction to the first diode; A second VRD, one end of which is connected to one end of the first diode; A second resistor connected in series with the second VRD; And A second diode connected in series with the second resistor in a reverse direction to the second VRD and having one end connected to one end of the first VRD; Multi-channel power stabilization device for a slot machine comprising a.

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