TWI658852B - 24 second training system for basketball with whistle signal control and master control mode - Google Patents

Abstract

This system uses a band-pass filter to convert the captured band-whistle tone 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 Send the encoded pause signal to the receiver, and also have a wireless remote control device with the same function as the key of the master control device. The signal of the wireless remote control device key can also be encoded and transmitted to the transmitter via the encoding circuit, and the transmitter will immediately transmit The encoded key signal is sent to the receiver. The receiver receives the encoded pause and button signals, restores the signals through a decoding circuit, and connects to the 24-second training system. It can synchronize with the keys of the master control device for all control functions, and achieve synchronization between the master control device and the wireless remote control device. Operational efficiency.

Description

Basketball 24-second training system capable of combining whistle signal control and master control mode

This system uses a band-pass filter to convert the captured band-whistle tone 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 Send the encoded pause signal to the receiver, and also have a wireless remote control device with the same function as the key of the master control device. The signal of the wireless remote control device key can also be encoded and transmitted to the transmitter via the encoding circuit, and the transmitter will immediately transmit The encoded key signal is sent to the receiver. The receiver receives the encoded pause and button signals, restores the signals through a decoding circuit, and connects to the 24-second training system. It can synchronize with the keys of the master control device for all control functions, and achieve synchronization between the master control device and the wireless remote control device. Operational efficiency.

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 public date: 2017/09/0, certificate number: I597650, patent name: sports multifunctional operation with time and score control Control system; the operator can only sit in a certain position to operate the scoring and timing system, and need to hear the whistle of the coach to press the pause function key. The accumulated gap time during training is sufficient to provide multiple offensive times and Time indirectly affects the effectiveness of training, and the coach cannot adjust the required training time on his own.

One of the objectives of the present invention is to use a band-pass filter to convert the captured band-whistle tone 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 The transmitter will immediately send the encoded pause signal to the receiver.

Another object of the present invention is: a wireless remote control device having the same function as a key of a master control device can also encode a signal of a wireless remote control device key and transmit it to a transmitter via an encoding circuit, and the transmitter will immediately transmit the encoded The key signal is given to the receiver.

Another object of the present invention is: the receiver receives the encoded pause and key signals, restores the signals through a decoding circuit, and connects to the 24-second training system, which can perform all control functions in synchronization with the keys of the main control device.

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 remote transmitting device

11‧‧‧ Horn

201‧‧‧24 second time zone

202‧‧‧1 / 10 second time zone

203‧‧‧1 / 100 second time zone

31‧‧‧ Whistle generator

32‧‧‧Portable whistle receiving and wireless remote 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‧‧‧Wireless remote control button

32201‧‧‧Wireless remote control switch button

32202‧‧‧First start and continue button

32203‧‧‧First pause button

32204‧‧‧Reset button in the first 24 seconds

32205‧‧‧The first 14 seconds reset button

32206‧‧‧The first 24 seconds plus a button

32207‧‧‧minus one key in the first 24 seconds

32208‧‧‧The first 1/10 second plus one button

32209‧‧‧First 1/10 second minus one button

32210‧‧‧The first 1/100 second plus one button

32211‧‧‧First 1/100 second minus one button

32212‧‧‧First speaker start button

32213‧‧‧First speaker end button

323‧‧‧Wireless remote control transmitting unit

32301‧‧‧Data encoding circuit

32302‧‧‧Transmitter address coding circuit

32303‧‧‧Signal Transmit IC

32304‧‧‧ Launcher

33‧‧‧ Wireless receiving unit of main control device

3301‧‧‧Receiver

3302‧‧‧Receiver Address Coding Circuit

3303‧‧‧Signal receiving IC

3304‧‧‧Data Decoding Circuit

34‧‧‧Master Control Device Chip Control Unit

3401‧‧‧Master control switch button (3401)

3402‧‧‧Second Start and Continue Buttons (3402)

3403‧‧‧Second pause button (3403)

3404‧‧‧The second 24 seconds reset button (3404)

3405‧‧‧The second 14-second reset button (3405)

3406‧‧‧The second 24 seconds plus a button (3406)

3407‧‧‧The second 24 seconds minus one button (3407)

3408‧‧‧The second 1/10 second plus a button (3408)

3409 ‧‧‧The second 1/10 second minus one button (3409)

3410‧‧‧The second 1/100 second plus a button (3410)

3411‧‧‧The second 1/100 second minus one button (3411)

3412‧‧‧Second speaker start button (3412)

3413‧‧‧Second Speaker End Button (3413)

3414‧‧‧control chipset (3414)

341401‧‧‧The first control chip

341402‧‧‧Second Control Chip

341403‧‧‧Third control chip

35‧‧‧ Panel display and drive unit of main control device

3501‧‧‧ Demultiplexer and Sequential Scan Drive Circuit

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

3503‧‧‧24-segment seven-segment display

3504‧‧‧1 / 10-segment seven-segment display

7-segment display with 3505‧‧‧1 / 100 second time zone

3506‧‧‧Speaker Drive Circuit (3506)

36‧‧‧Main control unit power supply unit

3601‧‧‧Battery

3602‧‧‧The first switch

3603‧‧‧External DC

3604‧‧‧Second switch

3605‧‧‧External AC mains

3606‧‧‧AC / DC voltage converter

3607‧‧‧Third switch

3608‧‧‧First Buck-Boost Voltage Circuit

3609‧‧‧Second 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 remote transmitting unit

Figure 5 Whistle receiving control unit

Figure 6 Wireless remote control buttons

Figure 7 Wireless remote transmitting unit

Figure 8 Wireless receiving unit of the main control device

Figure 9 Chip control unit of main control device

Figure 10 Panel display and drive unit of the main control device

Figure 11 Main control unit 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. Zone (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 FIG. 2. The display panel area includes: a 24 second time zone (201), a 1/10 second time zone (202), and a 1/100 second time zone (203).

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

The whistle generator (31) is a training whistle, which can generate a certain audio whistle.

The portable whistle receiving and wireless remote control transmitting unit (32) is shown in Figure 4. The portable whistle receiving and wireless remote control transmitting unit is composed of: a whistle receiving control unit (321), and a button of a wireless remote control device (322). And wireless remote control transmitting unit (323).

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 high-state voltage signal is output, otherwise a low-state voltage signal is output to the wireless transmitting unit. Data coding circuit.

The button of the wireless remote control device (322) is shown in Figure 6. The buttons of the wireless remote control device are: wireless remote control switch button (32201), first start and continue button (32202), first pause button (32203), first 24 seconds Reset button (32204), first 14 seconds reset button (32205), first 24 seconds plus one button (32206), first 24 seconds minus one button (32207), first 1/10 seconds plus one button ( 32208), the first 1/10 second minus one button (32209), the first 1/100 second plus one button (32210), the first 1/100 second minus one button (32211), the first speaker start button (32212) And the first speaker end button (32213).

The wireless remote control transmitting unit (323) is shown in Figure 7. The wireless remote control transmitting unit is composed of: a data encoding circuit (32301), a transmitter address encoding circuit (32302), a signal transmitting IC (32303), and a transmitter (32304). composition. The data encoding circuit receives the output voltage signal of the whistle receiving control unit and the key of the wireless remote control device to encode, and transmits the encoded signal to the wireless receiving unit of the main control device via the transmitter address encoding circuit, the signal transmitting IC and the transmitter. Receiver.

The main control device wireless receiving unit (33) is shown in Figure 8. The main control device wireless receiving unit is composed of: a receiver (3301), a receiver address coding circuit (3302), a signal receiving IC (3303), and a data decoding circuit. (3304) and the main control device wafer control unit (34). Receiver receives wireless transmission The encoded signal transmitted by the transmitting unit is decoded by the receiver address encoding circuit, the data decoding circuit, and the signal receiving IC, and the output voltage signal of the wireless transmitting unit is output to the chip control unit of the main control device.

As shown in Figure 9, the main control device chip control unit (34) is composed of: the main control device switch button (3401), the second start and continue button (3402), the second pause button (3403), and the second 24-second weight. Set button (3404), second 14 seconds reset button (3405), second 24 seconds plus one button (3406), second 24 seconds minus one button (3407), second 1/10 seconds plus one button (3408) ), The second 1/10 second minus one button (3409), the second 1/100 second plus one button (3410), the second 1/100 second minus one button (3411), the second speaker start button (3412) and The second speaker end button (3413) and the control chipset (3414) are composed. Pressing the main control switch button first will turn on the system, and then press it to turn off the system; pressing the second start and continue buttons will start or continue the countdown; pressing the second pause button will pause the countdown; Pressing the second 24 second reset button will reset the existing value in the 24 second time zone to 24; pressing the second 14 second reset button will reset the existing value in the 24 second time zone to 14; the second 24 seconds Adding one button will increase the existing value in the 24 second time zone by 1; pressing one button in the second 24 seconds will decrease the existing value in the 24 second time zone by 1; pressing the second button in 1/10 seconds will increase the value by 1. The current value in the / 10 second time zone is increased by 1; the second 1/10 second minus one button press will decrease the current value in the 1/10 second time zone by 1; the second 1/100 second plus a button press will make 1/100 The existing value in the second time zone is increased by 1; pressing the second 1/100 second button will decrease the existing value in the 1/100 second time zone by 1. Pressing the second speaker start button will turn on the speaker sound; pressing the second speaker end button The horn sound will be turned off in one click; the control chipset (3414) contains the The control chip (341401), the second control chip (341402), and the third control chip (341403). The first control chip can receive the second 24 seconds reset button, the second 14 seconds reset button, and the second 24 seconds plus one. press Key, the second 24 minus one key, the second 1/10 second plus one key, the second 1/10 second minus one key, the second 1/100 second plus one key, the second 1/100 second minus one key, The signals of the second speaker start button and the second speaker end button are signal processed and transmitted to the panel display and drive unit; the second control chip can connect the signals of the first and second start and continue buttons, and can connect the first Signals connected to the second and second pause buttons, signals connected to the first and second 24-second reset buttons, signals connected to the first and second 14-second reset buttons, connected to the first and second 24 One second signal plus one key, the first and second 24 seconds minus one key signal, the first and second 1/10 second plus one key signal, the first and second second 1 / 10 seconds minus one key signal, can connect the first and second 1/100 seconds plus one key signal, can connect the first and second 1/100 second minus one button signal, can connect the first and second speakers The signal of the start button, the signal of the end button of the first and second speakers can be connected for signal processing, and transmitted to the parallel panel A display and drive unit; the third control chip can generate a sequential scanning drive signal to the panel display and drive unit.

The main control device panel display and driving unit (35) is shown in Figure 10. The main control device panel display and driving unit is composed of: a control chipset (3414), a demultiplexer and a sequential scanning driving circuit (3501), Binary Decimal to Seven-segment Display Decoding IC (3502), Seven-segment display (3503) in 24 second time zone, Seven-segment display (3504) in 1/10 second time zone, Seven-segment display in 1/100 second time zone (3505) and speaker drive circuit (3506). The first control chip and the second control chip in the control chip group pass the signals there to the demultiplexer and the sequential scan driving circuit, the binary code decimal to seven-segment display decoding IC, the seventh in the 24 second time zone Segment display, seven-segment display in 1/10 second time zone, seven-segment display in 1/100 second time zone; the third control chip will generate a sequential scan driving signal, and sequentially drive each seven through the demultiplexer and the sequential scan driving circuit. Segment display, and the data of each seven-segment display is transmitted by the control chip to binary decimal to seven-segment display Decoding IC can display the decoded data on each seven-segment display. The seven-segment display in the 24-second time zone will count down from 24 to 00 with a period of 1 second; the seven-segment display in the 1/10 second time zone will cycle from 0 → 9 → 8 → 7 → 6 with a 1/10 second cycle. → 5 → 4 → 3 → 2 → 1 → 0 repeats the cycle; the seven-segment display in the 1/100 second time zone will be cycled from 0 → 9 → 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 0 repeats the cycle; when the seven-segment display in the 24 second time zone, the seven-segment display in the 1/10 second time zone and the seven-segment display in the 1/100 second time zone are all 0, the speaker driver circuit will automatically Stop timing and drive the horn to sound for 3 seconds.

The main control unit power unit (36) is shown in Figure 11. The power unit is composed of: battery (3601), first switch (3602), external DC power (3603), second switch (3604), external AC mains power (3605) , AC / DC voltage converter (3606), third switch (3607), first step-up and step-down voltage circuit (3608), and second step-up and step-down voltage circuit (3609). The battery is connected to the first switch. When the first switch is turned on, the battery is connected to the first buck voltage circuit and the second buck voltage circuit, and generates a first DC voltage Vdc1 and a second DC voltage Vdc2; 2 switch connection, when the second switch is turned on, the external DC power will be connected to the first buck voltage circuit and the second buck voltage circuit, and generate a first DC voltage Vdc1 and a second DC voltage Vdc2; the external AC mains power passes AC / The DC voltage converter outputs a DC voltage and is connected to a third switch. When the third switch is turned on, it is connected to the first step-up and step-down voltage circuit and the second step-up and step-down voltage circuit, and generates a first DC voltage Vdc1 and a second DC voltage Vdc2. . The first DC voltage Vdc1 will be connected to the seven-segment display in the 24 second time zone, the seven-segment display in the 1/10 second time zone, and the seven-segment display in the 1/100 second time zone; the second DC voltage Vdc2 will be connected to the multiplexer. And sequential scan drive circuit, binary code decimal to seven-segment display decoder IC, speaker drive circuit and power supply positive terminal of the control chipset.

Claims (8)

A basketball 24-second training system capable of combining whistle signal control and master control mode, including: a whistle generator, which is used to judge the whistle for referee games, and can generate a certain audio whistle; a carry-on whistle The sound receiving and wireless remote transmitting unit is composed of a whistle receiving control unit, a wireless remote control device button and a wireless remote transmitting unit, which can receive the audio whistle signal of the whistle generator and perform signal processing through the whistle receiving control unit. Then, the signal is transmitted through the wireless remote control transmitting unit, and at the same time, the signal of the key of the wireless remote control device can be transmitted by the wireless remote control transmitting unit; a wireless receiving unit of the main control device can receive the portable whistle receiving and the wireless remote control transmitting The unit transmits signals and outputs voltage signals; a chip control unit of the main control device can receive the output voltage signals of the wireless receiving unit of the main control device, and has a plurality of keys with different functions, so that the system can perform actions according to the functions of the keys. At the same time, the control signal is sent out; a panel display and drive of the main control device It can receive the control signal transmitted by the chip control unit of the main control device. Through the demultiplexer and the sequential scanning drive circuit and the binary code to the seven-segment display decoding IC, the decoded signal can be displayed on the seven-segment with different functions. A display; and a main control device power supply unit, provided by an external power source or an internal battery, with a switch and a buck voltage circuit, provided by a first buck voltage circuit, a second buck voltage circuit, and a third buck voltage circuit The first DC voltage Vdc1, the second DC voltage Vdc2, and the third DC voltage Vdc3 are provided to the main control device wireless receiving unit, the main control device chip control unit, and the main control device panel display and driving unit. A basketball 24-second training system capable of combining a whistle signal control and a master control mode 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 that amplifies the captured audio signal of a certain range; a frequency / voltage converter, Converts the amplified audio signal into a sensing voltage; an adjustable reference voltage adjuster that can adjust the reference voltage corresponding to the fixed audio; and a voltage comparator that converts the sensed voltage and The reference voltage of the adjustable reference voltage regulator is used for voltage comparison. If the voltages are the same, a high-state voltage signal is output, otherwise a low-state voltage signal is output and transmitted to the data encoding circuit of the wireless transmitting unit. A 24-second basketball training system capable of combining whistle signal control and master control mode, as described in item 1 of the scope of the patent application, wherein the wireless remote control device keys include: a wireless remote control switch button. Remote control system, press again to turn off the wireless remote control system; a first start and continue button, click to make the system start or continue the countdown action; a first pause button, click to make the system pause the countdown; a first 24 second reset button, press once to reset the existing value in the 24 second time zone to 24; a first 14 second reset button, press to reset the existing value in the 24 second time zone to 14; a first 24 seconds plus one button, one click will increase the existing value in the 24 second time zone by one; a first 24 seconds minus one button, pressing one will decrease the existing value in the 24 second time zone by one; one first 1/10 second plus one Press the key, press once to increase the existing value in the 1/10 second time zone by 1; a first 1/10 second to subtract a button; press the button to decrease the existing value in the 1/10 second time zone by 1; a first 1/100 Add one button to the second, press once to make 1/100 second The existing value of the zone is increased by 1; a first 1/100 second minus one button, which will reduce the current value of the 1/100 second time zone by 1; a first horn start button, which will turn on the horn sound when pressed; and a first Speaker end button. Press once to turn off the speaker sound. A 24-second basketball training system capable of combining whistle signal control and master control mode, as described in item 1 of the scope of patent application, wherein the wireless remote control transmitting unit includes: a data encoding circuit, a receiving whistle receiving control unit and a wireless The output voltage signal of the button of the remote control device is encoded; a transmitter address encoding circuit generates a transmitter address code; a signal transmitting IC; and a transmitter that can transmit the signal encoded by the data encoding circuit to the main control device wirelessly Receiving unit. A 24-second basketball training system capable of combining a whistle signal control and a master control mode as described in item 1 of the scope of the patent application, wherein the wireless control unit of the master control device includes: a receiver, which can be transmitted by a wireless remote control transmission unit A receiver address encoding circuit that generates a receiver address code; a signal receiving IC; and a data decoding circuit that decodes the encoded signal and transmits it to the chip control unit of the main control device. A 24-second basketball training system that can combine whistle signal control and master control mode as described in item 1 of the scope of the patent application, wherein the master control chip control unit includes: a switch button of the master control device, press the first button The system will be turned on, and then clicked to turn off the system; a second start and continue button, which will cause the system to start or continue the countdown action; a second pause button, which will pause the countdown when the button is pressed; a second 24 seconds Reset button, press once to reset the existing value in the 24 second time zone to 24; press the second reset button for 14 seconds to reset the existing value in the 24 second time zone to 14; a second 24 seconds Adding a button, pressing it will increase the existing value in the 24 second time zone by 1; pressing a button for a second 24 seconds will decrease the existing value in the 24 second time zone by 1; pressing a button will increase the value by a second 1/10 second, Press once to increase the existing value in the 1/10 second time zone by one; a second 1/10 second minus one button; click to decrease the existing value in the 1/10 second time zone by one; a second 1/100 second plus one Press the key and press once to increase the existing value in the 1/100 second time zone by 1. The second 1/100 second minus one button, pressing it will decrease the existing value in the 1/100 second time zone by 1. The second speaker start button, click it will turn on the speaker sound; the second speaker end button, click it will turn off A horn sound; and a control chip set, including a first control chip, a second control chip and a third control chip, the first control chip can receive a second 24 second reset button, a second 14 second reset button, a second 24 seconds plus one button, second 24 seconds minus one button, second 1/10 seconds plus one button, second 1/10 seconds minus one button, second 1/100 seconds plus one button, second 1/100 seconds The signals of the minus one button, the second speaker start button, and the second speaker end button are signal processed and transmitted to the parallel panel display and drive unit. The second control chip can connect the first and second start and continue button signals, Can connect the signal of the first and second pause button, the signal of the first and second 24 second reset button, the signal of the first and second 14 second reset button, and the first and second 24 The signal of one second plus one button can be connected to the first and second 24 seconds. The signal of pressing the key, the signal of connecting the first and second 1/10 seconds plus one key, the signal of connecting the first and second second 1/10 seconds minus one key, connecting the first and second 1/100 The signal of adding one button per second, the signal of connecting the first and second 1/100 second minus one button, the signal of connecting the first and second speaker start buttons, and the signal of connecting the first and second speaker end buttons The signal is processed and transmitted to the panel display and drive unit, and the third control chip can generate a sequential scanning drive signal to the panel display and drive unit. A 24-second basketball training system capable of combining whistle signal control and master control mode as described in item 1 of the scope of patent application. The master control device panel display and drive unit includes: a demultiplexer and sequential scan drive The circuit can receive the sequential scan drive signal generated by the third control chip in the control chip set, and sequentially drive each seven-segment display via the demultiplexer and the sequential scan drive circuit; a binary decimal to seven-segment display decoding IC controls The first control chip and the second control chip in the chipset transmit the signals after passing to the binary code decimal to seven-segment display decoding IC, the seven-segment display in the 24 second time zone, and the seventh in the 1/10 second time zone. Segment display, 7-segment display in the 1/100 second time zone, which can display decoded data on each 7-segment display; a 7-segment display in the 24-second time zone will count down from 24 to 00 in a 1-second cycle ; A 7-segment display in a 1/10 second time zone will cycle from 0 → 9 → 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 0; Seven-segment display of the time zone will have a week of 1/100 second Repeat the cycle from 0 → 9 → 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 0; a speaker driver circuit has a seven-segment display in the 24-second time zone, a seven-segment display in the 1/10 second time zone, and When the 7-segment display in the 1/100 second time zone shows 0, it will automatically stop timing and drive the horn to sound for 3 seconds. A basketball 24-second training system capable of combining a whistle signal control and a master control mode as described in item 1 of the scope of the patent application, wherein the power supply unit of the master control device includes: a battery; a first switch connected to the battery; An external DC power supply; a second switch connected to external DC power supply; an external AC mains power supply; an AC / DC voltage converter that converts external AC mains power to DC voltage output; a third switch and external AC mains power through AC / The DC voltage converter outputs a 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 24 second time zone, 1 A seven-segment display in the / 10 second time zone and a seven-segment display in the 1/100 second time zone; a second step-up and step-down voltage circuit connected to the first switch, the second switch, and the third switch to generate a second DC voltage Vdc2 and Connected to the demultiplexer and sequential scan drive circuit, binary decimal to seven-segment display decoder IC, speaker drive circuit, and the positive terminal of the control chipset.