Emergency power supply device for automatic prize claiming system of intelligent lottery terminal

Abstract

The invention discloses an emergency power supply device for an automatic prize claiming system of an intelligent lottery terminal, and relates to the technical field of automatic prize claiming power supply of the intelligent lottery terminal. The device comprises a storage battery, a charger, a switching part and a relay KM4, the switching part adopts a driving motor to drive a swing arm rod and a conductive sliding block, and the switching part is matched with an arc-shaped conductive sliding pole plate to achieve on-off control. A force sensitive resistor and a reset elastic ring ensure accurate switching and prevent the influence of residual pressure. The manual switching realizes positive and negative rotation through the control part, and the automatic switching is powered by the storage battery when the commercial power is cut off. The intelligent lottery terminal is compact in structure, reliable in switching and easy and convenient to operate, continuous operation of the intelligent lottery terminal under the power-off condition is guaranteed, and power supply stability and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply for automatic prize redemption of intelligent lottery terminals, in particular to an emergency power supply device for an automatic prize redemption system of an intelligent lottery terminal. Background Art

[0002] The existing automatic prize redemption system of smart lottery terminals mainly relies on mains power supply. Once the mains power is cut off, the system will usually stop working immediately, resulting in interruption of prize redemption service, which seriously affects user experience and service continuity. Most of the existing emergency power supply devices are simple backup batteries or UPS, but these devices have significant defects in the switching mechanism. First, the manual switching function of traditional devices is insufficient and the operation is complicated. It is difficult for users to complete the switch from mains power to backup power in a short time. Especially in an emergency, the operation takes a long time and can easily cause the system to shut down for a long time. Secondly, when the mains power is cut off, the existing device has a slow response speed when switching to the backup power supply, and the switching process is not smooth enough. These shortcomings make the existing smart lottery terminals less reliable in power outage scenarios, making it difficult to meet the needs of high-continuity services. Summary of the Invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: an emergency power supply device for an intelligent lottery terminal automatic prize redemption system, characterized in that: it includes a battery, the battery is electrically connected to the mains through a charger, and is used to charge the battery. At the same time, the mains is electrically connected to the intelligent lottery terminal automatic prize redemption system through a switching part and a normally open contact of a relay KM4 connected in series, and is used to power the intelligent lottery terminal automatic prize redemption system, wherein the output end of the battery is electrically connected to the normally closed contact of the relay KM4 in series with the power supply end of the intelligent lottery terminal automatic prize redemption system, wherein the switch The output end of the part is also provided with the electromagnetic coil of the relay KM4 in parallel; the switching part includes a driving motor, a rotating column is fixedly mounted on the output shaft of the driving motor, two parallel swing arms are fixedly mounted on the rotating column along its own radial direction, and a pressure plate is fixedly mounted between the two swing arms; the ends of the two swing arms away from the rotating column are both provided with a conductive slider in a spline sliding manner; the switching part also includes two arc-shaped conductive sliding plates, the two arc-shaped conductive sliding plates are in conductive sliding cooperation with the two conductive sliders, wherein the output shaft of the driving motor and the axis of the two arc-shaped conductive sliding plates are eccentrically arranged.

[0004] Preferably, the two arc-shaped conductive sliding plates are insulated by an arc-shaped ceramic frame, and the two arc-shaped conductive sliding plates are fixedly mounted on the mounting plate through the arc-shaped ceramic frame, wherein the drive motor is fixedly mounted on the mounting plate, and a force-sensitive resistor mounting plate is also fixedly mounted on the mounting plate, and the force-sensitive resistor mounting plate is fixedly matched with the arc-shaped ceramic frame.

[0005] Preferably, two force-sensitive resistors are fixedly mounted on the force-sensitive resistor mounting plate, and the two force-sensitive resistors are symmetrically arranged about the axis of the rotating column, wherein the pressure plate is in contact with the two force-sensitive resistors, and a reset elastic ring is also fixedly provided on the force-sensitive resistor mounting plate, and the reset elastic ring is in contact with the two conductive sliders, and the conductive slider is in elastic contact with the force-sensitive resistor mounting plate through the reset elastic ring.

[0006] Preferably, a spring is provided around both swing arm rods, one end of the spring is fixedly matched with the swing arm rod, and the other end of the swing arm rod is fixedly matched with the conductive slider; a protective cover is provided on the outer side of the arc-shaped ceramic frame and the two arc-shaped conductive sliding plates, and the protective cover is fixedly mounted on the mounting plate.

[0007] Preferably, two force-sensitive resistors are connected in parallel with a fixed resistor R1 in series to a 5V DC power supply; the collector and emitter of the NPN transistor and the electromagnetic coil of the relay KM1 are connected in series to a 12V DC power supply, wherein the positive terminal of the fixed resistor R1 is electrically connected to the base of the NPN transistor, and the negative terminal of the fixed resistor R1 is electrically connected to the emitter of the NPN transistor.

[0008] Preferably, two control units are further provided in parallel with the positive and negative poles of the 12V DC power supply, and the two control units respectively control the forward and reverse rotation of the output shaft of the drive motor, so that the two conductive sliders are separated from or in contact with the two arc-shaped conductive sliding plates;

[0009] The control unit includes the normally closed contact of relay KM1, normally open buttons SB1 / SB2 and the electromagnetic coil of relay KM2 / KM3 arranged in series; the normally open contacts of relay KM2 / KM3 are arranged in parallel at both ends of the normally open buttons SB1 / SB2.

[0010] Preferably, the positive and negative poles of the 12V DC power supply are also provided with an execution unit in parallel, the execution unit is composed of two normally open contacts of relay KM2 and two normally open contacts of relay KM3, and the normally open contacts of relay KM2 and relay KM3 are cross-arranged.

[0011] Preferably, the normally open contact of one relay KM2, the drive motor, and the normally open contact of another relay KM2 are connected in series in parallel to the 12V DC power supply;

[0012] The normally open contact of one relay KM3, the drive motor, and the normally open contact of another relay KM3 are connected in series in parallel to the 12V DC power supply.

[0013] Compared with the prior art, the present invention has the following advantages: (1) The present invention ensures that when the mains power is cut off, the battery can take over the power supply in a very short time through the automatic switching mechanism of the normally closed contact of the relay KM4 and the battery, thereby ensuring the continuous operation of the automatic prize redemption system of the smart lottery terminal. Compared with the defect of the traditional device causing the system to shut down due to power outage, the present invention realizes seamless power switching through the cooperation of the inverter and the relay, thereby improving the reliability of the system and user experience; (2) The present invention adopts the self-locking design of the normally open buttons SB1 / SB2 and the relays KM2 / KM3, and the user can quickly switch between the mains power and the battery through simple button operation. The operation is intuitive and the response is fast, overcoming the shortcomings of the traditional device of complex and time-consuming manual switching. Even in non-emergency situations, the user can quickly switch to battery power to ensure the continuous operation of the smart lottery terminal; (3) The present invention isolates the key components from the external environment through the insulation design of the protective cover and the arc-shaped ceramic frame, preventing dust and moisture from corroding the switching mechanism. The compact layout and electrical insulation of the mounting plate further enhance safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a diagram of the automatic power supply of the intelligent lottery terminal automatic prize redemption system of the present invention.

[0015] Figure 2 This is a diagram of the manual power supply of the intelligent lottery terminal automatic prize redemption system of the present invention.

[0016] Figure 3 It is a structural schematic diagram of the switching part of the present invention.

[0017] Figure 4 This is a structural diagram of the force-sensitive resistor mounting plate of the present invention.

[0018] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A in the middle.

[0019] Figure 6 This is a structural schematic diagram of the arc-shaped ceramic frame of the present invention.

[0020] Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point B in the middle.

[0021] Figure 8 This is a schematic diagram of the structure of the arc-shaped conductive sliding electrode of the present invention.

[0022] In the figure: 101-mounting plate; 102-protective cover; 103-drive motor; 104-force-sensitive resistor mounting plate; 105-arc-shaped ceramic frame; 106-rotating column; 107-force-sensitive resistor; 108-arc-shaped conductive sliding plate; 109-conductive slider; 110-reset elastic ring; 111-pressure plate; 112-swing arm; 113-spring. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-8 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0024] The present invention provides an emergency power supply device for an automatic prize redemption system of an intelligent lottery terminal, comprising a battery, which is electrically connected to the mains power through a charger for charging the battery. Simultaneously, the mains power is electrically connected to the automatic prize redemption system of the intelligent lottery terminal through a switching part and a normally open contact of a relay KM4 connected in series, for powering the automatic prize redemption system of the intelligent lottery terminal. The output end of the battery is electrically connected in series with the normally closed contact of the relay KM4 and the power supply end of the automatic prize redemption system of the intelligent lottery terminal, and the output end of the switching part is also provided with an electromagnetic coil of the relay KM4 in parallel.

[0025] The switching part includes a drive motor 103, on the output shaft of which a rotating column 106 is fixedly mounted, and on the rotating column 106 two parallel swing arms 112 are fixedly mounted along its radial direction, with a pressure plate 111 fixedly mounted between the two swing arms 112; the ends of the two swing arms 112 away from the rotating column 106 are both sleeved with a conductive slider 109 in a spline sliding manner; the switching part also includes two arc-shaped conductive sliding plates 108, which are in conductive sliding cooperation with the two conductive sliders 109, wherein the output shaft of the drive motor 103 and the axes of the two arc-shaped conductive sliding plates 108 are eccentrically arranged. Two arc-shaped conductive sliding plates 108 are insulated by an arc-shaped ceramic frame 105. Both arc-shaped conductive sliding plates 108 are fixedly mounted on the mounting plate 101 through the arc-shaped ceramic frame 105. The drive motor 103 is fixedly mounted on the mounting plate 101. The mounting plate 101 is also fixedly mounted with a force-sensitive resistor mounting plate 104, which is fixedly matched with the arc-shaped ceramic frame 105. Two force-sensitive resistors 107 are fixedly mounted on the force-sensitive resistor mounting plate 104. The two force-sensitive resistors 107 are symmetrically arranged about the axis of the rotating column 106. The pressure plate 111 is in contact with the two force-sensitive resistors 107. A reset elastic ring 110 is also fixedly provided on the force-sensitive resistor mounting plate 104. The reset elastic ring 110 is in contact with the two conductive sliders 109. The conductive sliders 109 are in elastic contact with the force-sensitive resistor mounting plate 104 via the reset elastic ring 110. A spring 113 is wrapped around each of the two swing arms 112, one end of which is fixedly engaged with the swing arm 112, and the other end of the swing arm 112 is fixedly engaged with the conductive slider 109. A protective cover 102 is wrapped around the outer side of the arc-shaped ceramic frame 105 and the two arc-shaped conductive sliding plates 108, and the protective cover 102 is fixedly mounted on the mounting plate 101. Two force-sensitive resistors 107 are connected in parallel with a fixed resistor R1 and connected in series to a 5V DC power supply. The collector and emitter of the NPN transistor and the electromagnetic coil of the relay KM1 are connected in series to a 12V DC power supply, with the positive terminal of the fixed resistor R1 electrically connected to the base of the NPN transistor, and the negative terminal of the fixed resistor R1 electrically connected to the emitter of the NPN transistor. Two control units are also set in parallel with the positive and negative poles of the 12V DC power supply. The two control units respectively control the forward and reverse rotation of the output shaft of the drive motor 103, so that the two conductive sliders 109 are separated or contacted with the two arc-shaped conductive sliding plates 108; the control unit includes the normally closed contact of the relay KM1, the normally open button SB1 / SB2 and the electromagnetic coil of the relay KM2 / KM3 arranged in series; the normally open contacts of the relay KM2 / KM3 are set in parallel at both ends of the normally open button SB1 / SB2.An actuator is also connected in parallel to the positive and negative poles of the 12V DC power supply. The actuator consists of two normally open contacts of relay KM2 and two normally open contacts of relay KM3, which are arranged in a cross-connected manner. The normally open contacts of one relay KM2, the drive motor 103, and the normally open contacts of the other relay KM2 are connected in series with the 12V DC power supply. The normally open contacts of one relay KM3, the drive motor 103, and the normally open contacts of the other relay KM3 are also connected in series with the 12V DC power supply.

[0026] The operating principle of the emergency power supply device for an intelligent lottery terminal automatic prize redemption system disclosed in the present invention is as follows: In the default state, the two conductive sliders 109 are in contact with the two arc-shaped conductive sliding plates 108, causing the switching unit to be in the on state. At this time, the mains input will power the electromagnetic coil of relay KM4, and the two normally open contacts of relay KM4 will be attracted, and the two normally closed contacts will be disconnected; at this time, the mains will directly power the intelligent lottery terminal automatic prize redemption system. When the mains power is cut off, the electromagnetic coil of relay KM4 loses power, and the two normally open contacts of relay KM4 will be disconnected, and the two normally closed contacts will be closed. The output end of the battery will power the intelligent lottery terminal automatic prize redemption system (an inverter is also provided between the output end of the battery and the power supply end of the intelligent lottery terminal automatic prize redemption system, and the battery will power the intelligent lottery terminal automatic prize redemption system through the inverter). At the same time, when the mains power is available, the battery will be charged by the charger.

[0027] In the manual switching state, pressing the normally open button SB1 / SB2 will energize the electromagnetic coil of the corresponding relay KM2 / KM3, and at the same time all the normally open contacts of the corresponding relay KM2 / KM3 will be attracted. At this time, the normally open button SB1 / SB2 will be self-locked by the normally open contacts of the relay KM2 / KM3 set in parallel, causing the electromagnetic coil of the relay KM2 / KM3 to be energized all the time, and the normally open contacts of the relay KM2 / KM3 to be attracted all the time. At this time, the drive motor 103 can rotate in one direction, such as Figure 4 and Figure 5As shown, at this time, the output shaft of the drive motor 103 drives the two swing arm rods 112 to rotate clockwise. At this time, the two conductive sliders 109 will gradually separate from the two arc-shaped conductive sliding plates 108 (because of eccentricity, the length of the swing arm rod 112 rotates to the direction in which the space becomes larger, making it impossible for the conductive slider 109 to contact the arc-shaped conductive sliding plates 108). At this time, the switching part is disconnected, which is equivalent to the mains input power failure. At this time, the battery is used to power the automatic prize redemption system of the smart lottery terminal. When the swing arm rod 112 drives the pressure plate 111 to rotate and contact with the force-sensitive resistor 107, the pressure plate 111 will squeeze the force-sensitive resistor 107, causing the resistance of the force-sensitive resistor 107 to decrease, which will cause the potential difference across the fixed resistor R1 to increase (increased to greater than 0.7V). At this time, there is a positive bias voltage between the base and emitter of the NPN transistor, and the collector and emitter of the NPN transistor will be turned on, which will cause the electromagnetic coil of the relay KM1 to be energized and the normally closed contact of the relay KM1 to be disconnected. At this time, the electromagnetic coil of the relay KM2 / KM3 will lose power, causing all the normally open contacts of the relay KM2 / KM3 to be disconnected, and the drive motor 103 stops rotating. At this time, the rotor of the drive motor 103 is no longer under force, so the two swing arm rods 112 are no longer under force, the pressure of the pressure plate 111 on the force-sensitive resistor 107 disappears, the resistance of the force-sensitive resistor 107 is restored, and the potential difference across the fixed resistor R1 will be lower than 0.7V. At this time, the collector and emitter of the NPN transistor are cut off. Similarly, when another normally open button is pressed (such as the normally open button SB1 that makes the swing arm 112 rotate clockwise, and the normally open button SB2 that makes the swing arm 112 rotate counterclockwise), the switching part is energized, and at this time, the mains electricity is directly supplied to the automatic prize redemption system of the smart lottery terminal. The polarity of the two ends of the drive motor 103 changes, causing the output shaft of the drive motor 103 to drive the two swing arms 112 to rotate in the opposite direction (counterclockwise), so that the two conductive sliders 109 are in contact with the two arc-shaped conductive sliding plates 108, and the switching part is energized. When it rotates to the position where the pressure plate 111 contacts the other force-sensitive resistor 107, the pressure plate 111 will still squeeze the force-sensitive resistor 107, and then the drive motor 103 loses power. The purpose of setting the reset elastic ring 110 is to allow the two conductive sliders 109 to squeeze the reset elastic ring 110 when the pressure plate 111 squeezes the force-sensitive resistor 107. At this time, when the drive motor 103 is powered off, the swing arm 112 will be subjected to the elastic force of the reset elastic ring 110 to swing back a short distance, so that the pressure plate 111 is separated from the force-sensitive resistor 107. This is because the conductive slider 109 and the arc-shaped conductive sliding electrode 108 are in contact at this time, the spring 113 is squeezed, and there is contact pressure between the arc-shaped conductive sliding electrode 108 and the conductive slider 109. At this time, the pressure plate 111 will have residual pressure on the force-sensitive resistor 107. Therefore, in order to reset the pressure on the force-sensitive resistor 107, a reset elastic ring 110 is required.

Claims

1. An emergency power supply device for an intelligent lottery terminal automatic prize redemption system, characterized by: The system includes a battery, which is electrically connected to the mains electricity through a charger for charging the battery. At the same time, the mains electricity is electrically connected to the intelligent lottery terminal automatic prize redemption system through a switching unit and a normally open contact of a relay KM4 connected in series, for powering the intelligent lottery terminal automatic prize redemption system. The output end of the battery is electrically connected in series with the normally closed contact of the relay KM4 and the power supply end of the intelligent lottery terminal automatic prize redemption system. The output end of the switching unit is also connected in parallel with the electromagnetic coil of the relay KM4. The switching part comprises a driving motor (103), a rotating column (106) is fixedly mounted on the output shaft of the driving motor (103), two parallel swing arms (112) are fixedly mounted on the rotating column (106) along its radial direction, and a pressure plate (111) is fixedly mounted between the two swing arms (112); the ends of the two swing arms (112) away from the rotating column (106) are sleeved with a conductive slider (109) in a spline sliding manner; the switching part also comprises two arc-shaped conductive sliding plates (108), the two arc-shaped conductive sliding plates (108) and the two conductive sliders (109) are conductively slidably matched, wherein the output shaft of the driving motor (103) and the axes of the two arc-shaped conductive sliding plates (108) are eccentrically arranged.

2. The emergency power supply device for the intelligent lottery terminal automatic prize redemption system according to claim 1, characterized in that: Two arc-shaped conductive sliding plates (108) are insulated by an arc-shaped ceramic frame (105), and both arc-shaped conductive sliding plates (108) are fixedly mounted on a mounting plate (101) through the arc-shaped ceramic frame (105), wherein a drive motor (103) is fixedly mounted on the mounting plate (101), and a force-sensitive resistor mounting plate (104) is also fixedly mounted on the mounting plate (101), and the force-sensitive resistor mounting plate (104) is fixedly matched with the arc-shaped ceramic frame (105).

3. The emergency power supply device for the intelligent lottery terminal automatic prize redemption system according to claim 2, characterized in that: Two force-sensitive resistors (107) are fixedly mounted on the force-sensitive resistor mounting plate (104), and the two force-sensitive resistors (107) are symmetrically arranged about the axis of the rotating column (106). The pressure plate (111) is in contact with the two force-sensitive resistors (107). A reset elastic ring (110) is also fixedly provided on the force-sensitive resistor mounting plate (104), and the reset elastic ring (110) is in contact with the two conductive sliders (109). The conductive sliders (109) are in elastic contact with the force-sensitive resistor mounting plate (104) through the reset elastic ring (110).

4. The emergency power supply device for the intelligent lottery terminal automatic prize redemption system according to claim 3, characterized in that: A spring (113) is provided around each of the two swing arm rods (112), one end of the spring (113) is fixedly matched with the swing arm rod (112), and the other end of the swing arm rod (112) is fixedly matched with the conductive slider (109); a protective cover (102) is provided on the outer side of the arc-shaped ceramic frame (105) and the two arc-shaped conductive sliding plates (108), and the protective cover (102) is fixedly mounted on the mounting plate (101).

5. The emergency power supply device for the intelligent lottery terminal automatic prize redemption system according to claim 4, characterized in that: Two force-sensitive resistors (107) are connected in parallel with a fixed resistor R1 in series to a 5V DC power supply; the collector and emitter of the NPN transistor and the electromagnetic coil of the relay KM1 are connected in series to a 12V DC power supply, wherein the positive terminal of the fixed resistor R1 is electrically connected to the base of the NPN transistor, and the negative terminal of the fixed resistor R1 is electrically connected to the emitter of the NPN transistor.

6. The emergency power supply device for the intelligent lottery terminal automatic prize redemption system according to claim 5, characterized in that: Two control units are also provided in parallel with the positive and negative poles of the 12V DC power supply, and the two control units respectively control the forward and reverse rotation of the output shaft of the drive motor (103), so that the two conductive sliders (109) are separated from or in contact with the two arc-shaped conductive sliding plates (108); The control unit includes the normally closed contact of relay KM1, normally open buttons SB1 / SB2 and the electromagnetic coil of relay KM2 / KM3 arranged in series; the normally open contacts of relay KM2 / KM3 are arranged in parallel at both ends of the normally open buttons SB1 / SB2.

7. The emergency power supply device for the intelligent lottery terminal automatic prize redemption system according to claim 6, characterized in that: An execution unit is also provided in parallel with the positive and negative poles of the 12V DC power supply. The execution unit is composed of two normally open contacts of relay KM2 and two normally open contacts of relay KM3. The normally open contacts of relay KM2 and the normally open contacts of relay KM3 are cross-set.

8. The emergency power supply device for the intelligent lottery terminal automatic prize redemption system according to claim 7, characterized in that: The normally open contact of one relay KM2, the drive motor (103), and the normally open contact of another relay KM2 are connected in parallel in a 12V DC power supply in a series manner; The normally open contact of one relay KM3, the drive motor (103), and the normally open contact of another relay KM3 are connected in parallel in a 12V DC power supply in a serial manner.

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