Control circuit of multifunctional radio

Abstract

The utility model provides a control circuit of a multifunctional radio, which is characterized in that a power supply is in power supply connection with a voltage regulation circuit and an audio signal playing circuit, and the voltage regulation circuit is in power supply connection with a radio main control circuit, a positioning information sending circuit and an SOS signal sending circuit. The output end of the radio main control circuit is connected with the input end of the audio signal playing circuit, the input end of the positioning information transmitting circuit and the input end of the SOS signal transmitting circuit, the input end of the radio main control circuit is connected with the output end of the FM signal receiving circuit, and the input end of the radio main control circuit is further connected with a control key. The hand-cranking power generation circuit is connected with the charging management circuit, the charging management circuit is connected with the power supply, and the output end of the charging management circuit is further provided with a USB power supply interface and a Type-C power supply interface. The beneficial effects of the utility model are that the function richness of the multifunctional radio is increased, and the user experience is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit technology, specifically to a control circuit for a multi-functional radio. Background Technology

[0002] A radio is an electronic device that receives radio signals and converts them into audio signals. The main components of a radio include an antenna, tuning circuitry, amplifier circuitry, and a speaker. The antenna is responsible for capturing radio signals in the air, the tuning circuitry selects signals at specific frequencies, the amplifier circuitry amplifies the strength of the selected signal, and the speaker converts the electrical signals into sound, allowing the user to hear the broadcast content. Through the coordinated action of a series of electronic components, it transforms radio waves into language that humans can understand. The history of the radio can be traced back to early wireless communication technology. With the development of technology, radios have undergone a transformation from analog to digital, and their functions and performance have continuously improved.

[0003] Currently, existing radios tend to have limited functionality, generally offering only basic radio reception and playback without additional features. However, sometimes when users are using a radio outdoors, if it runs out of power and there's no way to charge it, it becomes unusable. In such cases, solar charging or hand-cranked power generation would provide a better user experience. Similarly, if a user is using both a radio and a mobile phone outdoors and the phone runs out of power, a radio that can also function as a power bank would offer a convenient user experience. Furthermore, in emergency situations, the ability to send location information and distress signals is desirable. Therefore, current radios on the market fall short of meeting users' functional needs. Utility Model Content

[0004] To address the problems in the existing technology, this utility model provides a control circuit for a multi-functional radio. By setting up a power supply, voltage adjustment circuit, main control circuit, audio signal playback circuit, FM signal receiving circuit, location information transmission circuit, SOS signal transmission circuit, charging management circuit, and hand-cranked power generation circuit in the control circuit of the multi-functional radio, the functionality of the multi-functional radio is increased, the user experience is greatly improved, and the problem that existing radios on the market are unable to meet user needs in terms of functionality is solved.

[0005] This utility model provides a control circuit for a multifunctional radio, including a power supply, a voltage adjustment circuit, a main radio control circuit, an audio signal playback circuit, an FM signal receiving circuit, a location information transmission circuit, an SOS signal transmission circuit, a charging management circuit, and a hand-cranked generator circuit. The output terminal of the power supply is connected to the voltage adjustment circuit and the audio signal playback circuit. The output terminal of the voltage adjustment circuit is connected to the main radio control circuit, the location information transmission circuit, and the SOS signal transmission circuit. The output terminal of the main radio control circuit is connected to the input terminal of the audio signal playback circuit and the location information transmission circuit. The input terminal of the radio is connected to the input terminal of the SOS signal transmitting circuit. The output terminal of the radio main control circuit is also connected to an LCD display, a desk lamp, a flashlight, and an alarm light. The input terminal of the radio main control circuit is connected to the output terminal of the FM signal receiving circuit, which can receive FM signals. The input terminal of the radio main control circuit is also connected to control buttons. The output terminal of the hand-cranked generator circuit is connected to the input terminal of the charging management circuit. The output terminal of the charging management circuit is connected to the power supply. The output terminal of the charging management circuit is also equipped with a USB power interface and a Type-C power interface.

[0006] This utility model is further improved by including a main control chip U3 in the main control circuit of the radio. The main control chip U3 has 64 pins. Pin 1 of the main control chip U3 is connected to the output of the voltage adjustment circuit, pin 24 of the main control chip U3 is connected to the input of the audio signal playback circuit, pins 15 and 16 of the main control chip U3 are connected to the control buttons, and pins 12, 11, and 10 of the main control chip U3 are connected to the output of the FM signal receiving circuit. Pins 2 and 12 of chip U3 are connected to the input terminal of the positioning information transmission circuit. Pins 56 and 57 of the main control chip U3 are connected to the input terminal of the positioning information transmission circuit. Pins 58, 59, 60, 61, 49, 57, 56, 12, and 2 of the main control chip U3 are connected to the LCD display screen. Pin 25 of the main control chip U3 is connected to the desk lamp. Pin 20 of the main control chip U3 is connected to the flashlight. Pins 28 and 29 of the main control chip U3 are connected to the alarm light.

[0007] This utility model is further improved by including a voltage regulator chip U6, diodes D3, D16, D14, and a solar power generation chip interface JP1 in the voltage adjustment circuit. The voltage regulator chip U6 has three pins. The second pin of the voltage regulator chip U6 is connected to the negative terminals of diodes D3 and D16. The positive terminal of diode D3 is connected to the output terminal of the power supply. The positive terminal of diode D16 is connected to the negative terminal of diode D14. The positive terminal of diode D14 is connected to the output terminal of the solar power generation chip interface JP1. The third pin of the voltage regulator chip U6 is connected to the first pin of the main control chip U3, the positioning information transmission circuit, and the SOS signal transmission circuit for power supply. The first pin of the voltage regulator chip U6 is grounded.

[0008] This utility model is further improved by including a charging management chip U2 and a resistor R37 in the charging management circuit. The charging management chip U2 has 28 pins. Pin 12 of the charging management chip U2 is connected to the power supply. Pin 2 of the charging management chip U2 is connected to one end of the resistor R37. The other end of the resistor R37 is connected to the output terminal of the hand-cranked generator circuit. Pins 26, 27, 28, and 1 of the charging management chip U2 are connected to the USB power supply interface. Pins 23, 22, 25, and 24 of the charging management chip U2 are connected to the Type-C power supply interface. The USB power supply interface can connect to external USB interface devices and can also connect to external USB interface charging sources. The Type-C power supply interface can connect to external Type-C interface devices and can also connect to external Type-C interface charging sources.

[0009] In a further improvement of this utility model, the hand-cranked generator circuit includes a hand-cranked generator C-W1 and a diode D11. The output terminal of the hand-cranked generator C-W1 is connected to the positive terminal of the diode D11, and the negative terminal of the diode D11 is connected to the other end of the resistor R37.

[0010] This utility model is further improved by including an audio signal playback chip U8, a resistor R41, and a speaker SP1 in the audio signal playback circuit. The audio signal playback chip U8 has 8 pins. The 6th pin of the audio signal playback chip U8 is connected to the output terminal of the power supply. The 1st pin of the audio signal playback chip U8 is connected to one end of the resistor R41. The other end of the resistor R41 is connected to the 24th pin of the main control chip U3. The 8th pin of the audio signal playback chip U8 is connected to the input terminal of the speaker SP1.

[0011] This utility model is further improved by including an FM signal receiving circuit with an FM signal receiving chip IC1, a capacitor C5, a resistor R3, a capacitor C3, and an FM signal receiving antenna FM1. The FM signal receiving chip IC1 has 24 pins. Pins 14, 15, and 16 of the FM signal receiving chip IC1 are connected to pins 12, 11, and 10 of the main control chip U3, respectively. Pin 8 of the FM signal receiving chip IC1 is connected to one end of the capacitor C5. The other end of the capacitor C5 is connected to one end of the resistor R3. The other end of the resistor R3 is connected to one end of the capacitor C3. The other end of the capacitor C3 is connected to the output terminal of the FM signal receiving antenna FM1.

[0012] This utility model is further improved in that the positioning information transmitting circuit includes a positioning information transmitting chip U1, a crystal oscillator Y3, and an antenna ANT1. The positioning information transmitting chip U1 has 33 pins. The 14th pin of the positioning information transmitting chip U1 is connected to the 3rd pin of the voltage regulator chip U6. The 3rd and 4th pins of the positioning information transmitting chip U1 are connected to the 2nd and 12th pins of the main control chip U3, respectively. The 16th and 17th pins of the positioning information transmitting chip U1 are connected to the two ends of the crystal oscillator Y3, respectively. The 24th pin of the positioning information transmitting chip U1 is connected to the antenna ANT1.

[0013] This utility model is further improved in that the SOS signal transmitting circuit includes an SOS signal transmitting chip U5, a crystal oscillator Y4, and an antenna ANT2. The SOS signal transmitting chip U5 has 16 pins. The 14th pin of the SOS signal transmitting chip U5 is connected to the 3rd pin of the voltage regulator chip U6. The 5th and 6th pins of the SOS signal transmitting chip U5 are connected to the 56th and 57th pins of the main control chip U3, respectively. The 12th and 13th pins of the SOS signal transmitting chip U5 are connected to the two ends of the crystal oscillator Y4, respectively. The 16th pin of the SOS signal transmitting chip U5 is connected to the antenna ANT2.

[0014] This utility model is further improved in that the main control chip U3 is model CA56F22L3-S2, the voltage regulator chip U6 is model ME6210A28M3G, the charging management chip U2 is model IP220, the audio signal playback chip U8 is model AIP8002, the FM signal receiving chip IC1 is model C9612, the positioning information transmitting chip U1 is model ST17H65F, the SOS signal transmitting chip U5 is model ST17H66B, and the power supply is a rechargeable lithium battery with a capacity of not less than 10000mAh.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: It provides a control circuit for a multi-functional radio. By setting up a power supply, voltage adjustment circuit, radio main control circuit, audio signal playback circuit, FM signal receiving circuit, location information transmission circuit, SOS signal transmission circuit, charging management circuit, and hand-cranked power generation circuit in the control circuit of the multi-functional radio, and the solar power generation chip interface JP1 in the hand-cranked power generation circuit and voltage adjustment circuit, the battery life of the multi-functional radio when used outdoors is increased. The rechargeable lithium battery with a capacity of not less than 10000mAh allows the multi-functional radio to be used as a power bank to power other smart terminals. The location information transmission circuit and SOS signal transmission circuit allow users to use them to call for help in emergency situations, which greatly improves the user experience and solves the problem that the functionality of radios on the market in the prior art is difficult to meet user needs. Attached Figure Description

[0016] To more clearly illustrate the solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the control circuit of a multifunctional radio according to the present invention.

[0018] Figure 2 This is a circuit diagram of the main control circuit of the radio of this utility model;

[0019] Figure 3 This is a circuit diagram of the voltage adjustment circuit of this utility model;

[0020] Figure 4 This is a circuit diagram of the charging management circuit of this utility model;

[0021] Figure 5 This is a circuit diagram of the hand-cranked generator circuit of this utility model;

[0022] Figure 6 This is a circuit diagram of the audio signal playback circuit of this utility model;

[0023] Figure 7 This is a circuit diagram of the FM signal receiving circuit of this utility model;

[0024] Figure 8 This is a circuit diagram of the positioning information transmission circuit of this utility model;

[0025] Figure 9This is a circuit diagram of the SOS signal transmitting circuit of this utility model. Detailed Implementation

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or accompanying drawings of this invention are used to distinguish different objects, not to describe a particular order.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0029] like Figures 1-9As shown, the present invention provides a control circuit for a multifunctional radio, including a power supply, a voltage adjustment circuit, a main control circuit, an audio signal playback circuit, an FM signal receiving circuit, a location information transmission circuit, an SOS signal transmission circuit, a charging management circuit, and a hand-cranked generator circuit. The output terminal of the power supply is connected to the voltage adjustment circuit and the audio signal playback circuit. The output terminal of the voltage adjustment circuit is connected to the main control circuit, the location information transmission circuit, and the SOS signal transmission circuit. The output terminal of the main control circuit is connected to the input terminals of the audio signal playback circuit, the location information transmission circuit, and the SOS signal transmission circuit. The input terminal of the transmitting circuit is connected to the output terminal of the radio's main control circuit, which is also connected to an LCD display, a desk lamp, a flashlight, and an alarm light. The input terminal of the radio's main control circuit is connected to the output terminal of the FM signal receiving circuit, which can receive FM signals. The input terminal of the radio's main control circuit is also connected to control buttons. The output terminal of the hand-cranked generator circuit is connected to the input terminal of the charging management circuit, which is connected to the power supply. The output terminal of the charging management circuit is also equipped with a USB power interface and a Type-C power interface. The power supply is a rechargeable lithium battery with a capacity of not less than 10000mAh. In this embodiment, the solar power generation chip interface JP1 in the hand-cranked generator circuit and the voltage adjustment circuit increases the battery life of the multi-functional radio when used outdoors. The rechargeable lithium battery with a capacity of not less than 10000mAh allows the multi-functional radio to act as a power bank to power other smart terminals. The location information transmitting circuit, SOS signal transmitting circuit, and alarm light allow users to call for help in emergencies. The desk lamp and flashlight can be used for lighting, greatly improving the user experience.

[0030] like Figure 2As shown, the main control circuit of the radio contains a main control chip U3, model CA56F22L3-S2. The main control chip U3 has 64 pins. Pin 1 of the main control chip U3 is connected to the output of the voltage adjustment circuit; pin 24 is connected to the input of the audio signal playback circuit; pins 15 and 16 are connected to the control buttons; and pins 12, 11, and 10 are connected to the output of the FM signal receiving circuit. Pins 2 and 12 of the main control chip U3 are connected to the input terminal of the positioning information transmission circuit. Pins 56 and 57 of the main control chip U3 are also connected to the input terminal of the positioning information transmission circuit. Pins 58, 59, 60, 61, 49, 57, 56, 12, and 2 of the main control chip U3 are connected to the LCD display screen. Pin 25 of the main control chip U3 is connected to the desk lamp. Pin 20 of the main control chip U3 is connected to the flashlight. Pins 28 and 29 of the main control chip U3 are connected to the alarm light. In this embodiment, the radio main control circuit is used to control the operation of the radio main control circuit, audio signal playback circuit, FM signal receiving circuit, positioning information transmission circuit, SOS signal transmission circuit, LCD display screen, desk lamp, flashlight, and alarm light according to the input information of the control buttons.

[0031] like Figure 3 As shown, the voltage adjustment circuit includes a voltage regulator chip U6, diodes D3, D16, D14, and a solar power chip interface JP1. The voltage regulator chip U6 is model ME6210A28M3G and has three pins. Pin 2 of U6 is connected to the negative terminals of diodes D3 and D16. The positive terminal of diode D3 is connected to the output terminal of the power supply. The positive terminal of diode D16 is connected to the negative terminal of diode D14. The positive terminal of diode D14 is connected to the output terminal of the solar power chip interface JP1. Pin 3 of U6 is connected to the power supply pin 1 of the main control chip U3, the location information transmission circuit, and the SOS signal transmission circuit. Pin 1 of U6 is grounded. In this embodiment, the voltage adjustment circuit supplies power to the radio's main control circuit, the location information transmission circuit, and the SOS signal transmission circuit.

[0032] like Figure 4As shown, the charging management circuit includes a charging management chip U2 and a resistor R37. The charging management chip U2 is an IP220 chip with 28 pins. Pin 12 of the charging management chip U2 is connected to the power supply. Pin 2 of the charging management chip U2 is connected to one end of resistor R37, and the other end of resistor R37 is connected to the output of the hand-cranked generator circuit. Pins 26, 27, 28, and 1 of the charging management chip U2 are connected to the USB power interface, and pins 23, 22, 25, and 24 of the charging management chip U2 are connected to the Type-C power interface. The USB power interface can connect to external USB interface devices and can also connect to an external USB interface power source. The Type-C power interface can connect to external Type-C interface devices and can also connect to an external Type-C interface power source. In this embodiment, the charging management circuit is used to charge the power supply or to power external USB interface devices and Type-C interface devices.

[0033] like Figure 5 As shown, the hand-cranked power generation circuit includes a hand-cranked generator C-W1 and a diode D11. The output terminal of the hand-cranked generator C-W1 is connected to the positive terminal of the diode D11, and the negative terminal of the diode D11 is connected to the other end of the resistor R37. In this embodiment, the hand-cranked power generation circuit is used to temporarily generate electricity when the multi-functional radio runs out of power.

[0034] like Figure 6 As shown, the audio signal playback circuit includes an audio signal playback chip U8, a resistor R41, and a speaker SP1. The audio signal playback chip U8 is an AIP8002 model and has eight pins. Pin 6 of the audio signal playback chip U8 is connected to the output of the power supply. Pin 1 of the audio signal playback chip U8 is connected to one end of resistor R41, and the other end of resistor R41 is connected to pin 24 of the main control chip U3. Pin 8 of the audio signal playback chip U8 is connected to the input of the speaker SP1. In this embodiment, the audio signal playback circuit is used to play audio signals according to the control signals from the radio's main control circuit.

[0035] like Figure 7As shown, the FM signal receiving circuit includes an FM signal receiving chip IC1, capacitor C5, resistor R3, capacitor C3, and FM signal receiving antenna FM1. The FM signal receiving chip IC1 is a C9612 model with 24 pins. Pins 14, 15, and 16 of the FM signal receiving chip IC1 are connected to pins 12, 11, and 10 of the main control chip U3, respectively. Pin 8 of the FM signal receiving chip IC1 is connected to one end of capacitor C5. The other end of capacitor C5 is connected to one end of resistor R3, and the other end of resistor R3 is connected to one end of capacitor C3. The other end of capacitor C3 is connected to the output terminal of the FM signal receiving antenna FM1. In this embodiment, the FM signal receiving circuit is used to receive FM signals and transmit them to the radio's main control circuit. FM signal is an abbreviation for Frequency Modulation, a frequency-modulated signal that uses changes in the carrier frequency to transmit signals.

[0036] like Figure 8 As shown, the positioning information transmitting circuit includes a positioning information transmitting chip U1, a crystal oscillator Y3, and an antenna ANT1. The positioning information transmitting chip U1 has 33 pins. Pin 14 of the positioning information transmitting chip U1 is connected to pin 3 of the voltage regulator chip U6. Pins 3 and 4 of the positioning information transmitting chip U1 are connected to pins 2 and 12 of the main control chip U3, respectively. Pins 16 and 17 of the positioning information transmitting chip U1 are connected to both ends of the crystal oscillator Y3, and pin 24 of the positioning information transmitting chip U1 is connected to the antenna ANT1. In this embodiment, the positioning information transmitting circuit is used to transmit the positioning information of the multi-functional radio itself according to the control signals of the radio's main control circuit.

[0037] like Figure 9 As shown, the SOS signal transmitting circuit includes an SOS signal transmitting chip U5, a crystal oscillator Y4, and an antenna ANT2. The SOS signal transmitting chip U5 has 16 pins. Pin 14 of the SOS signal transmitting chip U5 is connected to pin 3 of the voltage regulator chip U6. Pins 5 and 6 of the SOS signal transmitting chip U5 are connected to pins 56 and 57 of the main control chip U3, respectively. Pins 12 and 13 of the SOS signal transmitting chip U5 are connected to both ends of the crystal oscillator Y4, and pin 16 of the SOS signal transmitting chip U5 is connected to the antenna ANT2. In this embodiment, the SOS signal transmitting circuit is used to generate an SOS signal based on the control signal from the radio's main control circuit.

[0038] As can be seen from the above, this utility model provides a control circuit for a multi-functional radio. By setting up a power supply, voltage adjustment circuit, main control circuit, audio signal playback circuit, FM signal receiving circuit, location information transmission circuit, SOS signal transmission circuit, charging management circuit, and hand-cranked power generation circuit in the control circuit of the multi-functional radio, and the solar power generation chip interface JP1 in the hand-cranked power generation circuit and voltage adjustment circuit, the battery life of the multi-functional radio when used outdoors is increased. The rechargeable lithium battery with a capacity of not less than 10000mAh allows the multi-functional radio to be used as a power bank to power other smart terminals. The location information transmission circuit and SOS signal transmission circuit allow users to use them to call for help in emergency situations, greatly improving the user experience and solving the problem that existing radios on the market cannot meet user needs in terms of functionality.

[0039] The specific embodiments described above are preferred embodiments of this utility model, and are not intended to limit the specific scope of this utility model. The scope of this utility model includes but is not limited to the specific embodiments described above. All equivalent changes made in accordance with this utility model are within the protection scope of this utility model.

Claims

1. A control circuit for a multi-functional radio, characterized in that: The system includes a power supply, a voltage adjustment circuit, a radio main control circuit, an audio signal playback circuit, an FM signal receiving circuit, a location information transmission circuit, an SOS signal transmission circuit, a charging management circuit, and a hand-cranked generator circuit. The output of the power supply is connected to the voltage adjustment circuit and the audio signal playback circuit. The output of the voltage adjustment circuit is connected to the radio main control circuit, the location information transmission circuit, and the SOS signal transmission circuit. The output of the radio main control circuit is connected to the inputs of the audio signal playback circuit, the location information transmission circuit, and the SOS signal transmission circuit. The output of the radio main control circuit also connects to an LCD display, a desk lamp, a flashlight, and an alarm light. The input of the radio main control circuit is connected to the output of the FM signal receiving circuit, which receives FM signals and has control buttons. The output of the hand-cranked generator circuit is connected to the input of the charging management circuit, which is connected to the power supply. The output of the charging management circuit also has a USB power interface and a Type-C power interface.

2. The control circuit of the multi-functional radio according to claim 1, characterized in that: The main control circuit of the radio includes a main control chip U3 with 64 pins. Pin 1 of the main control chip U3 is connected to the output of the voltage adjustment circuit. Pin 24 of the main control chip U3 is connected to the input of the audio signal playback circuit. Pins 15 and 16 of the main control chip U3 are connected to the control buttons. Pins 12, 11, and 10 of the main control chip U3 are connected to the output of the FM signal receiving circuit. Pins 2 and 12 of the main control chip U3 are connected to the input of the location information sending circuit. Pins 56 and 57 of the main control chip U3 are connected to the input of the location information sending circuit. Pins 58, 59, 60, 61, 49, 57, 56, 12, and 2 of the main control chip U3 are connected to the LCD display screen. Pin 25 of the main control chip U3 is connected to a desk lamp. Pin 20 of the main control chip U3 is connected to a flashlight. Pins 28 and 29 of the main control chip U3 are connected to an alarm light.

3. The control circuit of the multi-functional radio according to claim 2, characterized in that: The voltage adjustment circuit includes a voltage regulator chip U6, diodes D3, D16, and D14, and a solar power generation chip interface JP1. The voltage regulator chip U6 has three pins. The second pin of the voltage regulator chip U6 is connected to the negative terminals of diodes D3 and D16. The positive terminal of diode D3 is connected to the output terminal of the power supply. The positive terminal of diode D16 is connected to the negative terminal of diode D14. The positive terminal of diode D14 is connected to the output terminal of the solar power generation chip interface JP1. The third pin of the voltage regulator chip U6 is connected to the power supply of the first pin of the main control chip U3, the positioning information transmission circuit, and the SOS signal transmission circuit. The first pin of the voltage regulator chip U6 is grounded.

4. The control circuit of the multi-functional radio according to claim 3, characterized in that: The charging management circuit includes a charging management chip U2 and a resistor R37. The charging management chip U2 has 28 pins. Pin 12 of the charging management chip U2 is connected to the power supply. Pin 2 of the charging management chip U2 is connected to one end of the resistor R37, and the other end of the resistor R37 is connected to the output terminal of the hand-cranked generator circuit. Pins 26, 27, 28, and 1 of the charging management chip U2 are connected to the USB power supply interface. Pins 23, 22, 25, and 24 of the charging management chip U2 are connected to the Type-C power supply interface. The USB power supply interface can connect to external USB interface devices and can also connect to external USB interface power sources. The Type-C power supply interface can connect to external Type-C interface devices and can also connect to external Type-C interface power sources.

5. The control circuit of the multi-functional radio according to claim 4, characterized in that: The hand-cranked generator circuit includes a hand-cranked generator C-W1 and a diode D11. The output terminal of the hand-cranked generator C-W1 is connected to the positive terminal of the diode D11, and the negative terminal of the diode D11 is connected to the other end of the resistor R37.

6. The control circuit of the multi-functional radio according to claim 5, characterized in that: The audio signal playback circuit includes an audio signal playback chip U8, a resistor R41, and a speaker SP1. The audio signal playback chip U8 has 8 pins. Pin 6 of the audio signal playback chip U8 is connected to the output terminal of the power supply. Pin 1 of the audio signal playback chip U8 is connected to one end of the resistor R41. The other end of the resistor R41 is connected to pin 24 of the main control chip U3. Pin 8 of the audio signal playback chip U8 is connected to the input terminal of the speaker SP1.

7. The control circuit of the multi-functional radio according to claim 6, characterized in that: The FM signal receiving circuit includes an FM signal receiving chip IC1, a capacitor C5, a resistor R3, a capacitor C3, and an FM signal receiving antenna FM1. The FM signal receiving chip IC1 has 24 pins. Pins 14, 15, and 16 of the FM signal receiving chip IC1 are connected to pins 12, 11, and 10 of the main control chip U3, respectively. Pin 8 of the FM signal receiving chip IC1 is connected to one end of the capacitor C5. The other end of the capacitor C5 is connected to one end of the resistor R3. The other end of the resistor R3 is connected to one end of the capacitor C3. The other end of the capacitor C3 is connected to the output terminal of the FM signal receiving antenna FM1.

8. The control circuit of the multi-functional radio according to claim 7, characterized in that: The positioning information transmitting circuit includes a positioning information transmitting chip U1, a crystal oscillator Y3, and an antenna ANT1. The positioning information transmitting chip U1 has 33 pins. Pin 14 of the positioning information transmitting chip U1 is connected to pin 3 of the voltage regulator chip U6. Pins 3 and 4 of the positioning information transmitting chip U1 are connected to pins 2 and 12 of the main control chip U3, respectively. Pins 16 and 17 of the positioning information transmitting chip U1 are connected to both ends of the crystal oscillator Y3, respectively. Pin 24 of the positioning information transmitting chip U1 is connected to the antenna ANT1.

9. The control circuit of the multi-functional radio according to claim 8, characterized in that: The SOS signal transmitting circuit includes an SOS signal transmitting chip U5, a crystal oscillator Y4, and an antenna ANT2. The SOS signal transmitting chip U5 has 16 pins. Pin 14 of the SOS signal transmitting chip U5 is connected to pin 3 of the voltage regulator chip U6. Pins 5 and 6 of the SOS signal transmitting chip U5 are connected to pins 56 and 57 of the main control chip U3, respectively. Pins 12 and 13 of the SOS signal transmitting chip U5 are connected to both ends of the crystal oscillator Y4, respectively. Pin 16 of the SOS signal transmitting chip U5 is connected to the antenna ANT2.

10. The control circuit of the multi-functional radio according to claim 9, characterized in that: The main control chip U3 is model CA56F22L3-S2, the voltage regulator chip U6 is model ME6210A28M3G, the charging management chip U2 is model IP220, the audio signal playback chip U8 is model AIP8002, the FM signal receiver chip IC1 is model C9612, the location information transmitting chip U1 is model ST17H65F, the SOS signal transmitting chip U5 is model ST17H66B, and the power supply is a rechargeable lithium battery with a capacity of not less than 10000mAh.

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