Automatic mahjong machine provided with voltage stabilizing module

Abstract

The utility model provides an automatic mahjong machine with a voltage stabilizing module, which comprises a mahjong machine main body, a mahjong machine control main board and a power supply system for supplying power to the mahjong machine control main board are arranged in the mahjong machine main body, and the power supply system at least comprises a multi-path output transformer and a power supply management module. Wherein the primary side of the multi-path output transformer is used for being connected with commercial power, the secondary side of the multi-path output transformer comprises a plurality of output ports, the power supply management module comprises a commercial power voltage acquisition unit, a control unit and a switch switching unit, the commercial power voltage acquisition unit is used for acquiring commercial power voltage, the switch switching unit comprises a plurality of switches, and the control unit is used for controlling the switches. Different output ports of a secondary side of the multi-path output transformer are respectively connected with a power supply input port of a mahjong machine control main board through different switches, and the control unit is used for acquiring the mains supply voltage according to the mains supply voltage acquired by the mains supply voltage acquisition unit; and the switch switching unit is controlled to switch the output port of the secondary side of the multi-path output transformer for supplying power to the control mainboard of the mahjong machine.

Description

Technical Field

[0001] This utility model relates to the field of automatic mahjong machine technology, specifically to an automatic mahjong machine equipped with a voltage stabilizing module. Background Technology

[0002] Automatic mahjong machines are common entertainment devices in daily life, widely found in various activity venues and homes. Traditional automatic mahjong machines are equipped with only a fixed transformer. After the mains power is input into the mahjong machine, it is transformed by the transformer. The transformer's output voltage is directly input to the mahjong machine's control board. The control board then converts the input voltage into two sets of voltages: one set is converted into a 5V DC voltage to power the main board's control chip and the sensors on various components; the other set of higher voltage supplies power to the motors of various components.

[0003] However, due to geographical location, seasonality, and time of day, mains voltage fluctuates, causing the transformer's output voltage to also fluctuate. The lower the mains input voltage, the lower the transformer's output voltage; conversely, the higher the mains input voltage, the higher the transformer's output voltage. For example, with a mains voltage of 180V, the transformer's output voltage is 100V; with 220V, it's 125V; and with 250V, it can reach as high as 145V. Both excessively high and low voltages can cause malfunctions in mahjong machines. High voltage can lead to shortened motor lifespan, abnormal motor noise, excessive current noise, motor reversal, and shortened capacitor lifespan; low voltage can cause weak motor power and machine jamming. In some areas, due to significant voltage fluctuations, an additional voltage stabilizer is required, increasing user costs. Utility Model Content

[0004] The technical problem solved by this utility model is to provide an automatic mahjong machine equipped with a voltage stabilizing module, so as to overcome the problem that existing fixed transformers cannot adapt to large fluctuations in mains voltage. The specific technical solution adopted is as follows:

[0005] An automatic mahjong machine equipped with a voltage regulator module includes a mahjong machine body. The mahjong machine body contains a mahjong machine control motherboard and a power supply system for powering the mahjong machine control motherboard. The power supply system includes at least a multi-output transformer and a power management module. The primary side of the multi-output transformer is connected to mains power, and the secondary side includes several output ports. The power management module includes an mains voltage acquisition unit, a control unit, and a switch switching unit. The mains voltage acquisition unit is used to acquire mains voltage. The switch switching unit includes several switches. Different output ports on the secondary side of the multi-output transformer are connected to the power input ports of the mahjong machine control motherboard through different switches. The control unit controls the switch switching unit to switch the output ports on the secondary side of the multi-output transformer that supply power to the mahjong machine control motherboard based on the mains voltage acquired by the mains voltage acquisition unit.

[0006] Furthermore, the secondary side of the multi-output transformer forms output voltages in different ranges based on windings with different numbers of turns, and outputs them respectively through the output ports.

[0007] Furthermore, the secondary side of the multi-output transformer forms 3-5 output voltage intervals through 3-5 windings, and the output voltages of each interval are interconnected to form a gradient interval.

[0008] Furthermore, when the mains voltage collected by the mains voltage acquisition unit is within a preset range, the control unit controls the switch switching unit to make the output port of the secondary side of the multi-output transformer the output port of the standard voltage range.

[0009] When the mains voltage collected by the mains voltage acquisition unit is higher than the preset value, the control unit controls the switch switching unit to switch the output port of the secondary side of the multi-output transformer to the output port of the lower voltage range.

[0010] When the mains voltage collected by the mains voltage acquisition unit is lower than the preset value, the control unit controls the switch switching unit to switch the output port of the secondary side of the multi-output transformer to the output port of the higher voltage range.

[0011] Furthermore, the applicable mains voltage range of the multi-output transformer is 170V-250V, and the control unit switches the output port based on the input mains voltage so that the voltage output on the secondary side is within the range of 113V-125V.

[0012] Furthermore, the switching unit includes a multi-channel switching circuit, each of which includes a thyristor switch and an optocoupler coupled between its control terminal and the control unit.

[0013] Furthermore, the control unit includes a microcontroller and an analog multiplexer, and the microcontroller sends control signals to the switch switching unit through the analog multiplexer.

[0014] Furthermore, the mahjong machine control motherboard is also equipped with a voltage conversion circuit, which is used to convert the input voltage and output it to the various motor and sensor control modules in the mahjong machine body.

[0015] The beneficial effects of this utility model are:

[0016] This invention relates to an automatic mahjong machine equipped with a voltage stabilization module. By configuring a multi-output transformer, it can output different ranges of output voltage based on the input mains voltage. The control unit controls the switching unit to switch the output voltage between different ranges based on the collected mains voltage, so that the voltage output from the transformer to the mahjong machine's main board is always kept within a preset range. This ensures that the automatic mahjong machine can still operate stably even when the input mains voltage fluctuates, avoiding machine malfunctions or reduced machine lifespan caused by mains voltage fluctuations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the power system of an automatic mahjong machine equipped with a voltage regulator module according to an embodiment of this utility model.

[0018] Figure 2 This is a schematic diagram of the switch switching unit circuit in the power system of an embodiment of the automatic mahjong machine equipped with a voltage regulator module according to this utility model.

[0019] Figure 3 This is a schematic diagram of the control unit in the power system of an embodiment of an automatic mahjong machine equipped with a voltage regulator module according to this utility model. Detailed Implementation

[0020] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0021] See appendix Figure 1This utility model embodiment provides an automatic mahjong machine equipped with a voltage stabilization module, including a mahjong machine body, a mahjong machine control motherboard and a power supply system for supplying power to the mahjong machine control motherboard within the mahjong machine body, the power supply system including a multi-output transformer and a power management module, wherein the primary side of the multi-output transformer is used to connect to the mains power, and the secondary side includes several output ports, the power management module includes an mains voltage acquisition unit, a control unit and a switch switching unit, the mains voltage acquisition unit is used to acquire the mains voltage, the switch switching unit includes several switches, different output ports on the secondary side of the multi-output transformer are respectively connected to the power input port of the mahjong machine control motherboard through different switches, and the control unit is used to control the switch switching unit to switch the output ports on the secondary side of the multi-output transformer that supply power to the mahjong machine control motherboard according to the mains voltage acquired by the mains voltage acquisition unit.

[0022] In a preferred embodiment, the secondary side of the multi-output transformer forms different ranges of output voltage based on windings with different numbers of turns, and outputs them through the output ports respectively. Preferably, the secondary side of the multi-output transformer forms 3-5 ranges of output voltage through 3-5 windings, and the output voltages of each range are connected to form a gradient range.

[0023] Correspondingly, when the mains voltage collected by the mains voltage acquisition unit is within the preset range, the control unit controls the switch switching unit to make the output port of the secondary side of the multi-output transformer the output port of the standard voltage range.

[0024] When the mains voltage collected by the mains voltage acquisition unit is higher than the preset value, the control unit controls the switch switching unit to switch the output port of the secondary side of the multi-output transformer to the output port of the lower voltage range.

[0025] When the mains voltage collected by the mains voltage acquisition unit is lower than the preset value, the control unit controls the switch switching unit to switch the output port of the secondary side of the multi-output transformer to the output port of the higher voltage range.

[0026] As a preferred embodiment, in this example, the applicable mains voltage range of the multi-output transformer is 170V-250V, and the control unit switches the output port based on the input mains voltage so that the voltage output on the secondary side is within the range of 113V-125V.

[0027] In a specific example, the secondary side of the multi-output transformer forms four output voltage ranges through four windings, corresponding to mains voltage ranges of 230V~250V; 210V~230V; 190V~210V; and 170V~190V respectively. The control unit can control the switching unit to switch the output ports of the transformer secondary side according to the mains voltage collected by the mains voltage acquisition unit, so that the voltage output to the mahjong machine mainboard is maintained within the range of 113V-125V.

[0028] See Figure 2 In a specific example, the switching unit includes four switching circuits. Each switching circuit includes a thyristor switch (Q1, Q2, Q3, Q4) and an optocoupler (U5, U6, U7, U8) coupled between its control terminal and the control unit. The four output ports (AC1, AC2, AC3, AC4; AC0 is the neutral line) of the transformer secondary side J3 are each coupled to the power input terminal J4 of the mahjong machine mainboard through a switching circuit. Meanwhile, Figure 2 The switch unit shown is also equipped with a detection circuit consisting of resistors R34, R35, R36, capacitor C20, diode D6, and optocoupler U4, used to detect whether the switch unit has power output.

[0029] See Figure 3 In a specific example, the control unit includes a microcontroller U1 and an analog multiplexer U3. The microcontroller sends control signals OUT1, OUT2, OUT3, and OUT4 to the switching unit via the analog multiplexer to switch between different output ports. The analog multiplexer U3 ensures that at least one of the thyristor switches in the switching circuit is conducting, thereby improving the reliability and stability of the entire switching circuit.

[0030] It should be noted that the above examples are only used to illustrate the solution of this utility model, so as to make the implementation scheme of this utility model clearer, but do not constitute a specific limitation on this utility model. In other embodiments, the switch switching unit and the control unit may also be implemented using other forms of circuits.

[0031] In this embodiment, the mahjong machine control motherboard is also equipped with a voltage conversion circuit, which is used to convert the input voltage and output it to the various motor and sensor control modules in the mahjong machine body. Specific details are not provided here.

[0032] The embodiments of this utility model are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic mahjong machine equipped with a voltage stabilizing module, characterized in that, The system includes a mahjong machine body, within which is configured a mahjong machine control motherboard and a power supply system for supplying power to the mahjong machine control motherboard. The power supply system includes at least a multi-output transformer and a power management module. The primary side of the multi-output transformer is used to connect to mains power, and the secondary side includes several output ports. The power management module includes an mains voltage acquisition unit, a control unit, and a switch switching unit. The mains voltage acquisition unit is used to acquire mains voltage, and the switch switching unit includes several switches. Different output ports on the secondary side of the multi-output transformer are connected to the power input ports of the mahjong machine control motherboard through different switches. The control unit is used to control the switch switching unit to switch the output ports on the secondary side of the multi-output transformer that supply power to the mahjong machine control motherboard based on the mains voltage acquired by the mains voltage acquisition unit.

2. The automatic mahjong machine with a voltage stabilizing module as described in claim 1, characterized in that, The secondary side of the multi-output transformer generates output voltages in different ranges based on windings with different numbers of turns, and outputs them through the output ports respectively.

3. The automatic mahjong machine with a voltage stabilizing module as described in claim 2, wherein the secondary side of the multi-output transformer forms 3-5 output voltage intervals through 3-5 windings, and the output voltages of each interval are interconnected to form a gradient interval.

4. The automatic mahjong machine with a voltage stabilizing module as described in claim 3, characterized in that, When the mains voltage collected by the mains voltage acquisition unit is within the preset range, the control unit controls the switch switching unit to make the output port of the secondary side of the multi-output transformer the output port of the standard voltage range. When the mains voltage collected by the mains voltage acquisition unit is higher than the preset value, the control unit controls the switch switching unit to switch the output port of the secondary side of the multi-output transformer to the output port of the lower voltage range. When the mains voltage collected by the mains voltage acquisition unit is lower than the preset value, the control unit controls the switch switching unit to switch the output port of the secondary side of the multi-output transformer to the output port of the higher voltage range.

5. The automatic mahjong machine with a voltage stabilizing module as described in claim 4, characterized in that, The applicable mains voltage range of the multi-output transformer is 170V-250V. The control unit switches the output port based on the input mains voltage so that the voltage output on the secondary side is within the range of 113V-125V.

6. The automatic mahjong machine with a voltage stabilizing module as described in any one of claims 1-5, characterized in that, The switching unit includes a multi-channel switching circuit, and each switching circuit includes a thyristor switch and an optocoupler coupled between its control terminal and the control unit.

7. The automatic mahjong machine with a voltage stabilizing module as described in claim 6, characterized in that, The control unit includes a microcontroller and an analog multiplexer. The microcontroller sends control signals to the switch unit through the analog multiplexer.

8. The automatic mahjong machine with a voltage stabilizing module as described in any one of claims 1-5, characterized in that, The mahjong machine control motherboard is also equipped with a voltage conversion circuit, which is used to convert the input voltage and output it to the various motor and sensor control modules in the mahjong machine body.

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