TWI662982B - Scoring and timing control system with whistle signal and wireless transmission - Google Patents

Abstract

This system uses a bandpass filter to convert the captured bandpass frequency into a voltage and compare it with the adjustable reference voltage. If it is the same as the adjustable reference voltage, it outputs a pause signal to the transmitter, and the transmitter will immediately transmit a pause Signal to receiver. After receiving the pause signal, the receiver will connect to the scoring and timing system to stop all scoring and timing actions, and then accept the scoring and timing adjustment actions. Until the scoring and timing system receives a signal to continue action, the scoring and timing system will continue to operate.

Description

Scoring timing control system capable of combining whistle signal and wireless transmission

This system uses a bandpass filter to convert the captured bandpass frequency into a voltage and compare it with the adjustable reference voltage. If it is the same as the adjustable reference voltage, it outputs a pause signal to the transmitter, and the transmitter will immediately transmit a pause Signal to receiver. After receiving the pause signal, the receiver will connect to the scoring and timing system to stop all scoring and timing actions, and then accept the scoring and timing adjustment actions. Until the scoring and timing system receives a signal to continue action, the scoring and timing system will continue to operate.

After checking the previous conventional technology, the announcement date: 2016/12/01, certificate number: M533258, patent name: multifunction scoring and timing device; public date: 2013/07/16, public number: 20132875, patent name: Sports Online Service mechanism; and open date: 2017/09/0, certificate number: I597650, patent name: sports multifunctional control system with time and score control; the operator can only sit in a certain position and operate the scoring and timing system , And you need to hear the referee's whistle to press the pause function key. The accumulated drop time during the entire game is sufficient to provide multiple offensive times and time, which indirectly affects the result of the game.

One of the objectives of the present invention is to use a band-pass filter to convert the captured band-pass frequency into a voltage and compare it with an adjustable reference voltage. If it is the same as the adjustable reference voltage, output a pause signal to the transmitter and transmit The receiver will immediately send a pause signal to the receiver.

Another object of the present invention is: after receiving the pause signal, the receiver will connect the scoring and timing system, stop all scoring and timing actions, and then accept the scoring and timing correction adjustment actions.

Another object of the present invention is: until the scoring and timing system receives a signal to continue the operation, the scoring and timing system will continue to operate.

1‧‧‧Display panel area

2‧‧‧Keypad

3‧‧‧Battery area

4‧‧‧ External AC mains jack area

5‧‧‧External DC jack area

6‧‧‧ Elastic adjustment button

7‧‧‧ support guide

8‧‧‧ portable handle

9‧‧‧ whistle

10‧‧‧ Portable whistle receiving and wireless transmitting device

11‧‧‧ Horn

201‧‧‧minute time zone

202‧‧‧second time zone

203‧‧‧24 second time zone

204‧‧‧A team name

205‧‧‧A team fouls

206‧‧‧A team score

207‧‧‧B team name

208‧‧‧B fouls

209‧‧‧B team score

210‧‧‧ Ball display

211‧‧‧ competition season

31‧‧‧ Whistle generator

32‧‧‧Portable whistle receiving and wireless transmitting unit

321‧‧‧ Whistle receiving control unit

32101‧‧‧Sound receiving microphone

32102‧‧‧Band Pass Filter

32103‧‧‧Audio Amplifier

32104‧‧‧Frequency / Voltage Converter

32105‧‧‧ Adjustable Reference Voltage Regulator

32106‧‧‧ Voltage Comparator

322‧‧‧ launch unit

32201‧‧‧Data encoding circuit

32202‧‧‧Transmitter address coding circuit

32203‧‧‧Signal Transmit IC

32204‧‧‧ Launcher

33‧‧‧Wireless receiving unit

3301‧‧‧Receiver

3302‧‧‧Receiver Address Coding Circuit

3303‧‧‧Signal receiving IC

3304‧‧‧Data Decoding Circuit

3305‧‧‧control chipset

330501‧‧‧1st control chip

330502‧‧‧ 2nd control chip

330503‧‧‧3rd control chip

34‧‧‧Chip Control Unit

3401‧‧‧minute time zone plus 1 button

3402‧‧‧minus 1 key

3403‧‧‧second time zone plus 1 button

3404‧‧‧ Decrease time zone key 1

3405‧‧‧24 seconds time zone plus 1 key

3406‧‧‧24 seconds time key minus 1

3407‧‧‧A team score plus 1 button

3408‧‧‧A team's score minus 1 button

3409‧‧‧B team score plus 1 button

3410‧‧‧B team's score minus 1 button

3411‧‧‧A team foul button

3412‧‧‧B team foul button

3413‧‧‧Keys for displaying the ball right

3414‧‧‧Keys for season

3415‧‧‧Select 24 seconds button

3416‧‧‧Select 14 seconds button

3417‧‧‧Pause button

3418‧‧‧Continue button

3419‧‧‧24 seconds reset button

3420‧‧‧14 seconds reset button

3421‧‧‧Start / reset button

3422‧‧‧Key for speaker switch

3423‧‧‧Key for power switch of chip control unit

35‧‧‧ Panel display and drive unit

3501‧‧‧ Demultiplexer and Sequential Scan Drive Circuit

3502‧‧‧Binary Decimal to Seven Segment Display Decoding IC

3503‧Seven-segment display with time zone

Seven-segment display with 3504‧‧‧second time zone

3505‧‧‧24-segment seven-segment display

3506‧‧‧A team score seven-segment display

3507‧‧‧B team's seven-segment display

7-segment display of 3508‧‧‧A team fouls

Seven-segment display of 3509‧‧‧B team fouls

3510‧‧‧ Ball Weight Display

3511‧‧‧Seven-segment display

3512‧‧‧Speaker driver circuit

36‧‧‧ Power Unit

3601‧‧‧Battery

3602‧‧‧The first switch

3603‧‧‧External DC

3604‧‧‧2nd switch

3605‧‧‧External AC mains

3606‧‧‧AC / DC voltage converter

3607‧‧‧3rd switch

3608‧‧‧1st Buck-Boost Voltage Circuit

3609‧‧‧Second Buck-Boost Voltage Circuit

3610‧‧‧3rd Buck-Boost Voltage Circuit

Figure 1 Appearance

Figure 2 Display panel area

Figure 3 Block diagram of the system

Figure 4 Portable whistle receiving and wireless transmitting unit

Figure 5 Whistle receiving control unit

Figure 6 Wireless transmitting unit

Figure 7 Wireless receiving unit

Figure 8 Wafer Control Unit

Figure 9 Panel display and drive unit

Figure 10 Power supply unit

The appearance of this system is shown in Figure 1. The appearance diagram includes: display panel area (1), key area (2), battery area (3), external AC mains socket area (4), external DC socket. District (5), Elastic adjustment button (6), support guide (7), portable handle (8), whistle (9), portable whistle receiving and wireless transmitting device (10) and speaker (11). .

The display panel area (1) is shown in Figure 2. The display panel area includes: minute time zone (201), second time zone (202), 24 second time zone (203), team A team name (204), Team A fouls (205), Team A scoring (206), Team B team name (207), Team B fouls (208), Team B scoring (209), Ball display (210), and game season (211) ).

The block diagram of this system is shown in Figure 3. This system consists of: a whistle generator (31), a portable whistle receiving and wireless transmitting unit (32), a wireless receiving unit (33), and a chip control unit (34 ), A panel display unit (35) and a power supply unit (36).

The whistle generator (31) is used to judge the whistle for referee competition, and can generate a certain audio whistle.

The portable whistle receiving and wireless transmitting unit (32) is shown in FIG. 4, and the portable whistle receiving and wireless transmitting unit is composed of a whistle receiving control unit (321) and a transmitting unit (322).

The whistle receiving control unit is shown in Figure 5. The whistle receiving control unit is composed of: a sound receiving microphone (32101), a band-pass filter (32102), an audio amplifier (32103), a frequency / voltage converter (32104), and a It is composed of a modulation reference voltage regulator (32105) and a voltage comparator (32106). The sound receiving microphone receives the whistle of the whistle generator. After filtering by the band-pass filter, it only passes a certain range of audio signals, and then the amplified audio signal is amplified by the audio amplifier. The taken audio signal is converted into a sensing voltage. The sensing voltage is compared with the voltage of the adjustable reference voltage regulator. If the voltages are the same, a low-state voltage signal is output, otherwise a high-state voltage signal is output to the wireless transmitting unit. Data coding circuit.

The wireless transmitting unit (322) is shown in Figure 6. The wireless transmitting unit is composed of: a data encoding circuit (32201), transmitter address coding circuit (32202), signal transmitting IC (32203) and transmitter (32204). The data encoding circuit receives and encodes the output voltage signal of the wireless transmitting unit, and transmits the encoded signal to the receiver of the wireless receiving unit via the transmitter address encoding circuit, the signal transmitting IC, and the transmitter.

The wireless receiving unit (33) is shown in Figure 7. The wireless receiving unit is composed of a receiver (3301), a receiver address coding circuit (3302), a signal receiving IC (3303), a data decoding circuit (3304), and a control chip. (3305). The receiver receives the encoded signal transmitted by the wireless transmitting unit, decodes the encoded signal through the signal receiving IC, the receiver address encoding circuit and the data decoding circuit, and outputs the output voltage signal of the wireless transmitting unit to the control chip.

As shown in Figure 8, the chip control unit (34) is composed of: a key that adds 1 to the time zone (3401), a key that subtracts 1 from the time zone (3402), a key that adds 1 to the second time zone (3403), and a second time Zone 1 minus button (3404), 24 seconds time zone plus 1 button (3405), 24 seconds time zone minus 1 button (3406), team A score plus 1 button (3407), team A score minus 1 Button (3408), Button for team B plus 1 (3409), Button for team B minus 1 (3410), Button for team A fouls (3411), Button for team B fouls (3412), Ball display Button (3413), button (3414), 24 seconds button (3415), 14 seconds button (3416), pause button (3417), resume button (3418), 24 seconds weight Set button (3419), 14-second reset button (3420), start / reset button (3421), speaker switch button (3422), chip control unit power switch button (3423), whistle reception control Unit (3201) and control chipset (3305). Pressing the sub-time zone plus 1 button will increase the existing sub-time zone by 1. Pressing the sub-time zone minus 1 will decrease the sub-time zone by 1. Pressing the second time zone plus 1 button will The current value in the second time zone is increased by 1, and the second value in the second time zone is decreased by one click. The current value in the second time zone is decreased by 1; Pressing the button of zone 1 will increase the existing value in the 24 second time zone by 1. Pressing the button of subtracting 1 in the 24 second time zone will decrease the existing value in the 24 second time zone by 1. Pressing the button of A team's score plus 1 will Click the button of team A to increase the existing value by 1. Click the button of team A to reduce the score by 1. Press the button of team B to increase the score by 1 and press the button of team B to increase the existing value by 1. Clicking on the button of 1 will decrease the current score of team B by 1. Pressing the button of the number of fouls of team A will increase the existing value of the number of fouls of team A by 1 and will be displayed from 0 to 5. The button of the number of fouls of team B will be Increase the current number of fouls of team B by 1 and present it in a cycle from 0 to 5. Pressing the button of the ball right display will make the ball right display in the opposite direction; pressing the button of the game section will increase the current value of the game section by 1. It is presented in a cycle from 1 to 9. Selecting a button of 24 seconds will cause the existing value in the 24-second time zone to be reset to 24 and perform the function of counting down. Selecting a button of 14 seconds will cause the 24-second time zone to be pressed. Reset the existing value to 14 and perform the function of counting down ; Press the pause button once to pause the system; press the continue button to continue the system; click the reset button for 24 seconds to reset the existing value in the 24-second time zone to 24; reset the button for 14 seconds Pressing the button once will reset the existing value in the 24-second time zone to 14; pressing the start / reset button the first time will perform the start function, and then pressing the system again will perform the reset function, which will return the system to the beginning State; press the power switch button first to turn on the system, and then press it to turn off the system; press the speaker switch button first to turn on the speaker, and then click to turn off the speaker; the control chipset contains the first control chip (330501 ), The second control chip (330502) and the third control chip (330503), the first control chip can receive the key of the time zone plus 1, the key of the time zone minus 1, the key of the second time zone plus 1, the second time Zone 1 minus button, 24 seconds time zone plus 1 button, 24 seconds time zone minus 1 button, team A score plus 1 button, team A score minus 1 button, team B plus 1 button, team B Score minus 1 button, team A offender The signals of the number of fouls and the number of fouls of team B are signal processed and transmitted to the panel display and drive unit. The second control chip can receive the key of the ball display, the key of the game season, the key of 24 seconds, Select the 14-second button, pause button, resume button, 24-second reset button, 14-second reset button, start / reset button, and speaker switch signal for signal processing and send it to the panel display And drive unit; the third control chip can receive the output signal of the wireless receiving unit in the whistle receiving control unit. If it is a high-state voltage signal, the system pause function is started. Pressing the continue button once will cause the system to continue to operate, and it can also generate Sequentially scan driving signals to the panel display and driving unit.

The panel display and drive unit (35) is shown in Figure 9. The panel display and drive unit is composed of: a control chipset (3305), a demultiplexer and a sequential scan drive circuit (3501), a binary decimal to seven-segment display Decoding IC (3502), 7-segment display in time zone (3503), 7-segment display in second time zone (3504), 7-segment display in 24-second time zone (3505), 7-segment display of team A score (3506) 7-segment display for team B score (3507), 7-segment display for team fouls (3508), 7-segment display for team B fouls (3509), ball display (3510), 7-segment display for game section (3511) and a horn drive circuit (3512). The first control chip and the second control chip in the control chip group pass the signals there to the demultiplexer and the sequential scanning driving circuit, the binary decimal to seven-segment display decoding IC, and the seven segments in the time zone. Display, seven-segment display in the second time zone, seven-segment display in the 24-second time zone, seven-segment display of team A score, seven-segment display of team B score, seven-segment display of team A fouls, and seven of fouls of team B Segment display; the third control chip will receive the signal of the whistle receiving control unit in the chip control unit and generate a sequential scan driving signal, and sequentially drive each seven-segment display through the demultiplexer and the sequential scan drive circuit, and each seven-segment display The data is transmitted from the control chip to the binary decimal to seven-segment display decoder IC and displayed on each seven-segment display. The seven-segment display in the time zone will count down from 10 to 00; the seven-segment display in the second time zone will count down from 59 to 00 and repeat the cycle; the seven-segment display in the 24-second time zone will count down from 24 to 00, Repeat the cycle again; the seven-segment display of team A's score will count up from 000 to 999; the seven-segment display of team B's score will count up from 000 to 999; the seven-segment display of team A's fouls will count up from 0 to 5; The seven-segment display of team B fouls will count from 0 up to 5; the ball weight indicator will show a triangle light to the right or left; the seven-segment display of the game section will sequentially display from 1 up to 9 ; When the seven-segment display in the sub-time zone and the seven-segment display in the second time zone show 0, or the seven-segment display in the 24-second time zone show 0, the speaker driving circuit will make a sound.

As shown in Figure 10, the power supply unit (36) is composed of: battery (3601), first switch (3602), external DC power (3603), second switch (3604), external AC mains power (3605), AC / The DC voltage converter (3606), the third switch (3607), the first buck-boost voltage circuit (3608), the second buck-boost voltage circuit (3609), and the third buck-boost voltage circuit (3610). The battery is connected to the first switch. When the first switch is turned on, the battery is connected to the first step-up and step-down voltage circuit, the second step-up and step-down voltage circuit, and the third step-up and step-down voltage circuit, and generates a first DC voltage Vdc1 and a second DC voltage. The voltage Vdc2 and the third DC voltage Vdc3; the external DC power is connected to the second switch. When the second switch is turned on, the external DC power will be connected to the first step-up voltage circuit, the second step-up voltage circuit, and the third step-up voltage circuit. And generate a first DC voltage Vdc1, a second DC voltage Vdc2, and a third DC voltage Vdc3; the external AC mains voltage is connected to the third switch through the AC / DC voltage converter, and when the third switch is turned on, it will be connected to the third switch The first step-up and step-down voltage circuit, the second step-up and step-down voltage circuit, and the third step-up and step-down voltage circuit generate a first DC voltage Vdc1, a second DC voltage Vdc2, and a third DC voltage Vdc3. The first DC voltage Vdc1 will be connected to the branch The positive end of the power supply for the seven-segment display in the time zone, the seven-segment display in the second time zone, the seven-segment display in the 24-second time zone, the seven-segment display for team A scores, and the seven-segment display for team B scores; the second DC voltage Vdc2 will Connect to the positive terminal of the seven-segment display of team A fouls, the seven-segment display of team B fouls, the ball weight display and the seven-segment display of the game session; the third DC voltage Vdc3 will be connected to the demultiplexer and sequence Scan drive circuit, binary decimal to seven-segment display decoder IC, speaker drive circuit, and power supply positive terminal of the control chipset.

Claims (8)

A scoring and timing control system capable of combining a whistle signal with wireless transmission includes: a whistle generator, which is used to judge a whistle for a referee match, and can generate a certain audio whistle; a portable whistle receiver The wireless transmitting unit is composed of a whistle receiving control unit and a transmitting unit, and can receive the audio whistle signal of the whistle generator, perform signal processing through the whistle receiving control unit, and then transmit the signal through the transmitting unit; A wireless receiving unit can receive the transmission signal of the portable whistle receiving and wireless transmitting unit and output a voltage signal; a chip control unit can receive the output signal of the wireless receiving unit and has a plurality of keys with different functions, which can Make the system execute the actions according to the function of the keys and transmit the control signals at the same time; a panel display and drive unit can receive the control signals transmitted by the chip control unit, pass the demultiplexer and the sequential scan drive circuit and the binary code from decimal to seven Segment display decoding IC, which can display the control signal on a seven-segment display with different functions; A power supply unit can generate a first DC voltage Vdc1, a second DC through an external AC mains, an external DC power, and an internal battery, together with a switch and a first voltage boost circuit, a second voltage boost circuit, and a third voltage boost circuit. The voltage Vdc2 and the third DC voltage Vdc3 are provided to the wireless receiving unit, the chip control unit, and the panel display and driving unit. A scoring timing control system capable of combining a whistle signal and wireless transmission as described in item 1 of the scope of the patent application, wherein the whistle receiving control unit includes: a sound receiving microphone for receiving a whistle of a whistle generator; A band-pass filter, after the whistle of the whistle generator is filtered, it only passes a certain range of audio signals; an audio amplifier can amplify the captured audio signal of a certain range; a frequency / voltage converter will amplify The converted audio signal is converted into a sensing voltage; an adjustable reference voltage adjuster can adjust the reference voltage corresponding to the fixed audio; and a voltage comparator can convert the sensed voltage and the adjustable voltage captured by the frequency / voltage converter. The reference voltage of the reference voltage regulator is used for voltage comparison. If the voltages are the same, a low-state voltage signal is output, otherwise a high-state voltage signal is output and transmitted to the data encoding circuit of the wireless transmitting unit. A scoring and timing control system capable of combining a whistle signal and wireless transmission, as described in item 1 of the scope of the patent application, wherein the wireless transmitting unit includes: a data encoding circuit that receives the output voltage signal of the wireless transmitting unit for encoding; A transmitter address coding circuit generates a transmitter address code; a signal transmitting IC; and a transmitter that can transmit a signal encoded by the data coding circuit to a receiver of a wireless receiving unit. A scoring and timing control system capable of combining a whistle signal with wireless transmission, as described in item 1 of the scope of the patent application, wherein the wireless receiving unit includes: a receiver that can receive the encoded signal transmitted by the wireless transmitting unit; a receiving A device address encoding circuit to generate a receiver address code; a signal receiving IC; and a data decoding circuit to decode the encoded signal and transmit it to the chip control unit. A scoring and timing control system capable of combining a whistle signal and wireless transmission, as described in item 1 of the scope of the patent application, wherein the chip control unit includes: a minute time zone plus a button, and a click will make the minute time distinguish Increase the existing value by 1; press the button to decrement the minute by 1; click to decrement the existing value by 1; click the button to increase the 1 by 1 second; click to increase the existing value by 1 in the second; A button that subtracts 1 from the second time zone. Pressing it will decrease the existing value in the second time zone by 1. A button that adds 1 to the 24 second time zone will increase the existing value by 24 in the 24 second time zone. A 24 second time zone Decrease 1 button, click to decrease the existing value in the 24 second time zone by 1. Press A button to increase the score of team A by 1; click to increase the current value of team A by 1; The existing value of team A's score will be reduced by 1; the button of team B's score plus 1 will be pressed; the existing value of team B's score will be increased by 1; 1; A team fouls button, click to make the current number of fouls for team A Add 1 to cycle from 0 to 5. A button for team B fouls will be clicked to increase the current number of fouls for team B. 1 will be cycled from 0 to 5; a button to display the ball weight will click to make the ball The direction of the weight display is reversed; a button for a game session, click it will increase the current value of the game session by 1, and it will be displayed in a cycle from 1 to 9; The setting is displayed as 24, and the function of counting down is performed; a button of 14 seconds is selected, and a click will cause the existing value in the 24-second time zone to be reset to 14 and execute the function of counting down; a button of pause , Press once to make the system pause timing; once to continue the button, click to make the system continue to move; a 24 second reset button, click to reset the existing value in the 24 second time zone to 24; 14 seconds Set the button, and press it once to reset the existing value in the 24-second time zone to 14. When you press the start / reset button, the system will perform the start function by pressing the button the first time, and the system will perform the reset function by pressing the button again. The system reverted to State; a button of the horn switch, pressing the first time will turn on the horn, and then pressing it will turn off the horn; a button of the chip control unit power switch, pressing the first time will turn on the system, and then pressing it to turn off the system; and a control chip The group can receive signals transmitted by the wireless receiving unit, and perform signal processing on the signals of each key in the chip control unit, and can also generate sequential scanning driving signals to the panel display and driving unit. The chip control unit described in item 5 of the scope of the patent application, wherein the control chip set includes: a first control chip, which can receive a key divided by time zone plus one, a key divided by time zone minus 1, and a second time zone plus 1 button, 1 time button minus 1 button, 24 seconds time zone plus 1 button, 24 seconds time zone minus 1 button, A team score plus 1 button, A team score minus 1 button, B team score plus The signals of the button of 1 key, the button of team B minus 1, the button of team A fouls and the button of team B fouls are processed and transmitted to the panel display and drive unit; a second control chip can receive the ball right Buttons displayed, Buttons for game session, Buttons for 24 seconds, Buttons for 14 seconds, Buttons for pause, Buttons for resume, Buttons for reset in 24 seconds, Buttons for reset in 14 seconds, Buttons for start / reset The signals of the keys of the horn switch and the signal are transmitted to the panel display and drive unit; and a third control chip can receive the output signal of the wireless receiving unit in the whistle receiving control unit. If it is a low-state voltage signal, the system is started Suspended Can, continues until the system will continue to press the key operation, the other can be generated sequentially scan driving signals to the display panel and the driving unit. A scoring and timing control system capable of combining whistle signals and wireless transmission, as described in item 1 of the scope of the patent application, wherein the panel display and driving unit includes: a demultiplexer and a sequential scanning driving circuit, which can receive control The sequential scan driving signal generated by the third control chip in the chipset sequentially drives each seven-segment display via the demultiplexer and the sequential scan drive circuit; a binary code decimal to seven-segment display decoding IC controls the first The 1 control chip and the 2nd control chip pass the signals to the demultiplexer and the sequential scan drive circuit, the binary code decimal to seven-segment display decoding IC, the time-segmented seven-segment display, and the time zone seven seconds Segment display, 7-segment display with 24-second time zone, 7-segment display for team A score, 7-segment display for team B score, 7-segment display for team A fouls, and 7-segment display for team B fouls, each seven-segment display The data sent by the control chip to the binary code decimal to seven-segment display decoder IC, and displayed on each seven-segment display; seven-segment display in a time zone The device will count down from 10 to 00; the seven-segment display in the one-second time zone will count down from 59 to 00 and repeat the cycle; the seven-segment display in the 24-second time zone will count down from 24 to 00, Repeat the cycle again; the seven-segment display of team A's score will count up from 000 to 999; the seven-segment display of team B's score will count up from 000 to 999; the seven-segment display of team A's fouls will change from 0. Up to 5 counts; a seven-segment display of team B fouls will count up from 0 to 5; a ball right display will show a triangle light to the right or left; a seven-segment display of game sessions, Will sequentially display from 1 up to 9; and a speaker drive circuit, when the 7-segment display in the time zone seconds and the 7-segment display in the time zone seconds are displayed as 0, or the 7-segment display in the time zone 24 seconds is displayed as At 0, the driver will make a sound. A scoring and timing control system capable of combining a whistle signal and wireless transmission as described in item 1 of the scope of the patent application, wherein the power supply unit includes: a battery; a first switch connected to the battery; an external direct current; The second switch is connected to external DC power; an external AC mains; an AC / DC voltage converter that converts external AC mains to DC voltage output; a third switch and external AC mains output through an AC / DC voltage converter DC voltage connection; a first step-up and step-down voltage circuit is connected to the first switch, the second switch, and the third switch to generate a first DC voltage Vdc1, and is connected to a seven-segment display in the time zone and a seven-segment time zone The positive terminal of the power supply of the display, the seven-segment display in the 24-second time zone, the seven-segment display of the A team score, and the seven-segment display of the B team score; a second step-up and step-down voltage circuit, and the first switch, the second switch, the third The switch is connected to generate a second DC voltage Vdc2, and is connected to the power of the seven-segment display of team A fouls, the seven-segment display of team B fouls, the ball right display and the seven-segment display of the game session. ; A third step-up and step-down voltage circuit is connected to the first switch, the second switch, and the third switch to generate a third DC voltage Vdc3, and is connected to the demultiplexer and the sequential scanning drive circuit, and the binary code is decimal to Seven-segment display decoder IC, speaker driver circuit, and power supply positive terminal of the control chipset.