Sports intercom device based on Bluetooth and 4G communication

Abstract

The invention relates to an exercise intercom device, in particular to an exercise intercom device based on Bluetooth and 4G communication, which comprises a device main body and a PCBA (Printed Circuit Board Assembly) board arranged in the device main body, the PCBA board is provided with a master control MCU, and a Bluetooth talkback module, a GNSS positioning communication module, an MIC module, an audio amplification output module and a switch control module which are electrically connected with the master control MCU, the Bluetooth talkback module is used for middle and short distance voice talkback, the GNSS positioning communication module is internally provided with a 4G network to realize long distance talkback, the MIC module is used for picking up voice data, and the audio amplification output module is used for outputting the voice data. The audio amplification output module is used for analyzing and playing the picked voice, and the switch control module is used for controlling start and stop or startup and shutdown of each function. The system has the advantages that the structure is simple, the design is reasonable, Bluetooth and 4G communication switching talkback can be achieved, BT Bluetooth talkback can be achieved within 100 meters, and 4G network delay is reduced, so that the problem that communication with nearby teammates cannot be achieved due to field 4G signal loss can be solved.

Description

Technical Field

[0001] The invention relates to a sports intercom device, in particular to a sports intercom device based on Bluetooth and 4G communication. Background Art

[0002] A walkie-talkie is a portable device used for wireless communication that can achieve voice transmission within a short distance. With the continuous development of walkie-talkie technology, walkie-talkies have now been widely used in many industries such as commercial retail, property management, transportation logistics, tourism and entertainment, meeting the needs of different industries for wireless communication.

[0003] At present, portable walkie-talkies on the market all use radio waves for short-distance communication and 4G networks for long-distance communication. Some products use BLE Bluetooth for pairing and binding. Due to the small size and battery capacity of sports walkie-talkies, traditional radio intercoms cannot be used for short-distance intercoms. Existing sports walkie-talkies use 4G networks for short-distance and long-distance intercoms. However, when using 4G network intercoms, because the voice needs to be forwarded through the server, there is a serious delay (0.5-3 seconds), and the 4G network has coverage problems, especially when exercising at high speed in the wild, there is a signal loss. This requires the design of a sports intercom device that can switch between Bluetooth and 4G communications and medium- and short-distance Bluetooth intercoms. Summary of the invention

[0004] The purpose of the present invention is to provide a sports intercom device based on Bluetooth and 4G communication, which has a simple structure, reasonable design, can switch between Bluetooth and 4G communication for intercom, and can also use BT Bluetooth intercom within 100 meters, reducing the delay of 4G network, thereby solving the problem of being unable to talk with nearby teammates due to loss of 4G signal in the wild.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sports intercom device based on Bluetooth and 4G communication, the sports intercom device comprising a device body and a PCBA board arranged in the device body, the PCBA board is provided with a main control MCU and a Bluetooth intercom module electrically connected to the main control MCU, a GNSS positioning communication module, a MIC module, an audio amplification output module and a switch control module, wherein the model of the main control MCU is SLM332U, the Bluetooth intercom module is used for medium and short-range voice intercom, and the Bluetooth intercom module is composed of a Bluetooth chip U2, a Bluetooth chip peripheral circuit, an audio codec circuit and a crystal oscillator circuit, and the Bluetooth chip peripheral circuit audio codec The circuit and the crystal oscillator circuit are both connected to the Bluetooth chip U2. The GNSS positioning communication module has a built-in 4G network to realize long-distance intercom. The MIC module is used to pick up voice data, the audio amplification and output module is used to analyze and play the picked up voice, and the switch control module is used to control the start and stop or power on and off of each function. A power supply module is also provided on the PCBA board. The power supply module is respectively connected to the main control MCU, the Bluetooth intercom module, the GNSS positioning communication module, the MIC module, the audio amplification and output module and the switch control module, and provides power to the main control MCU, the Bluetooth intercom module, the GNSS positioning communication module, the MIC module, the audio amplification and output module and the switch control module.

[0006] Preferably, a function switch is provided on the device body, and the function switch is electrically connected to the switch control module.

[0007] Preferably, the Bluetooth chip peripheral circuit is composed of an inductor L1, an inductor L2, an inductor L3, a capacitor C10, a capacitor C11, a capacitor C13, a capacitor C14, a capacitor C16, a capacitor C19, a capacitor C22, a capacitor C25, a capacitor C29, a capacitor C30, a capacitor C32, a capacitor C35, a capacitor C38, a capacitor C39, a resistor R26, a resistor R33, a resistor R38, a resistor R54, a resistor R55, a resistor R60, a resistor R12396 and an RF radio frequency connector. The two ends of the inductor L1 are connected to the 27th and 28th pins of the Bluetooth chip U2 respectively; the two ends of the inductor L2 are connected to the 29th and 30th pins of the Bluetooth chip U2 respectively; the two ends of the inductor L3 are connected to the 19th and 20th pins of the Bluetooth chip U2 respectively; one end of the capacitor C10, the capacitor C11, the capacitor C13, the capacitor C14, the capacitor C16, the capacitor C19, the capacitor C22, and the capacitor C25 are grounded, and the other ends are connected to the 6th and 22th pins of the Bluetooth chip U2 respectively. , 28, 20, 30, 9, 8 and 7 pins; one end of resistor R26, resistor R33, resistor R54 and resistor R55 are connected to the main control MCU, and the other ends are connected to pins 32, 33, 45 and 46 of the Bluetooth chip U2 respectively; one end of resistor R12396 is grounded, and the other end is connected to pin 2 of the Bluetooth chip U2; one end of resistor R38 is connected to the 2.8V power supply end, and the other end is connected to pin 25 of the Bluetooth chip U2; capacitor C29 One end of the capacitor C30 is connected to the main control MCU, and the other end is connected to pins 13 and 12 of the Bluetooth chip U2 respectively; one end of the capacitor C32 and the capacitor C35 are connected to the power supply module, and the other end is connected to pins 11 and 10 of the Bluetooth chip U2 respectively; one end of the capacitor C38 is grounded, and the other end is connected to resistor R60 and pin 1 of the Bluetooth chip U2 respectively; the end of the resistor R60 away from the capacitor C38 is connected to capacitor C39 and the RF radio frequency connection terminal J6 respectively.

[0008] Preferably, the audio codec circuit includes an audio codec chip U3, a resistor R42, a resistor R44, a resistor R46, a resistor R49, a resistor R52, a resistor R12387, a resistor R12388, a resistor R12389, a capacitor C12, a capacitor C15, a capacitor C17, a capacitor C18, a capacitor C20, a capacitor C23, a capacitor C21, a capacitor C24, a capacitor C31 and a capacitor C33, wherein one end of the resistor R42, the resistor R44, the resistor R46, the resistor R49 and the resistor R52 is connected to the main control MCU, and the other end is respectively connected to pins 9, 2, 6, 8 and 7 of the audio codec chip U3; the resistor One end of R12387, resistor R12388, resistor R12389, capacitor C12, capacitor C15, capacitor C17, capacitor C18, capacitor C20 and capacitor C23 are grounded, and the other ends are respectively connected to pins 20, 1, 19, 4, 3, 11, 16, 15 and 14 of the audio codec chip U3; one end of capacitor C21 and capacitor C24 are connected to pins 4 and 5 of the Bluetooth chip U2, and the other end is connected to pins 13 and 12 of the audio codec chip U3; one end of capacitor C31 and capacitor C33 are respectively connected to pins 18 and 17 of the audio codec chip U3, and the other ends are respectively connected to the power supply module.

[0009] Preferably, the crystal oscillator circuit includes a crystal oscillator chip Y1, a resistor R58, a resistor R59, a capacitor C41 and a capacitor C42, wherein one end of the resistor R59 is respectively connected to the resistor R58 and pin 49 of the Bluetooth chip U2, and the other end is respectively connected to the capacitor C42, pin 50 of the Bluetooth chip U2 and pin 3 of the crystal oscillator chip Y1, the capacitor C42 is grounded at one end away from the resistor R59, the resistor R58 is respectively connected to the capacitor C41 and pin 1 of the crystal oscillator chip Y1 at one end away from the resistor R59, and pins 2 and 4 of the crystal oscillator chip Y1 are grounded.

[0010] Preferably, the GNSS positioning communication module includes a GNSS chip U6, a capacitor C45, a capacitor C47, a capacitor C43, a capacitor C46, ​​a capacitor C50, a capacitor C51, a capacitor C52, a capacitor C54, a capacitor C55, a capacitor C59, a capacitor C48, a capacitor C53, a capacitor C57, a resistor R66, a resistor R67, a resistor R63, a resistor R68, a resistor R69, an inductor L4, a crystal oscillator chip Y2, a crystal oscillator chip Y3 and a radio frequency amplifier circuit, wherein one end of the capacitor C45, the capacitor C47, the capacitor C43, the capacitor C46, ​​the capacitor C50, the capacitor C51, the capacitor C52, the capacitor C54, the capacitor C55, the capacitor C59 and the capacitor C48 are grounded, and the other end is respectively connected to pins 1, 5, 6, 7, 24, 38, 39, 21, 23, 17 and 10 of the GNSS chip U6; the resistor R66, the resistor R67, the resistor R63, the resistor R68, the resistor R69, the inductor L4, the crystal oscillator chip Y2, the crystal oscillator chip Y3 and the radio frequency amplifier circuit. One end of resistor R68 and resistor R69 are connected to the main control MCU, and the other end is connected to pins 30, 19 and 18 of GNSS chip U6 respectively; one end of resistor R67 is connected to the 1.8V power supply end, and the other end is connected to pin 17 of GNSS chip U6; one end of capacitor C53 is grounded, and the other end is connected to pin 12 of crystal oscillator chip Y3 and GNSS chip U6 respectively; one end of capacitor C57 is grounded, and the other end is connected to pin 11 of crystal oscillator chip Y3 and GNSS chip U6 respectively; pin 1 of crystal oscillator chip Y2 is connected to resistor R63, pin 2 is grounded, and pins 3 and 4 are connected to pins 3 and 2 of GNSS chip U6 respectively; the resistor R63 is grounded at one end away from the crystal oscillator chip Y2; one end of inductor L4 is connected to pin 10 of GNSS chip U6, and the other end is connected to the RF amplifier circuit.

[0011] Preferably, the RF amplification circuit includes an RF amplifier chip U9, a capacitor C56, a capacitor C58, an inductor L6, an inductor L7 and an RF radio frequency connection terminal J7, wherein one end of the capacitor C58 is grounded, and the other end is respectively connected to pins 4 and 5 of the RF amplifier chip U9; one end of the inductor L6 is connected to pin 40 of the GNSS chip U6, and the other end is connected to pin 6 of the RF amplifier chip U9; one end of the inductor L7 is connected to pin 3 of the RF amplifier chip U9, and the other end is connected to the capacitor C56, and the end of the capacitor C56 away from the RF amplifier chip U9 is respectively connected to the inductor L4 and the RF radio frequency connection terminal J7.

[0012] Preferably, the MIC module is composed of a MIC chip U5, a capacitor C40, a capacitor C44 and a capacitor C49, wherein pins 2 and 3 of the MIC chip U5 are grounded, pin 1 is connected to capacitor C40, and pin 4 is respectively connected to capacitor C44 and capacitor C49, and the capacitor C44 is connected to the Bluetooth chip U2 at one end away from the MIC chip U5.

[0013] Preferably, the audio amplification output module includes an audio amplifier chip U4, a capacitor C34, a capacitor C36, a capacitor C37, a resistor R12397, a resistor R12398, a resistor R47, a resistor R50 and a resistor R53, wherein one end of the resistor R12397 and the resistor R12398 is grounded, and the other end is respectively connected to the resistor R47 and the resistor R50; the ends of the resistor R47 and the resistor R50 away from the resistor R12397 and the resistor R12398 are respectively connected to the 6th and 7th pins of the audio amplifier chip U4; The two ends of capacitor C34 are respectively connected to pins 9 and 11 of the audio amplifier chip U4; one end of capacitor C36 and capacitor C37 are grounded, and the other ends are respectively connected to pins 12 and 8 of the audio amplifier chip U4; one end of resistor R53 is connected to pin 43 of the Bluetooth chip U2, and the other end is connected to pin 13 of the audio amplifier chip U4; pins 10, 15 and 17 of the audio amplifier chip U4 are grounded, pins 5 and 16 are connected to the speaker, pins 1 and 2 are connected to the main control MCU, and pins 3 and 4 are connected to the power supply module.

[0014] Preferably, the switch control module is composed of a switch S1, a switch S2, a switch S3, a capacitor C9, a resistor R21, a resistor R22, a resistor R25, a resistor R28 and a diode D10, wherein one end of the switch S1, the switch S2 and the switch S3 is grounded, and the other end is respectively connected to the resistor R21, the resistor R25 and the resistor R28; the ends of the resistors R21, R25 and R28 connected away from the switches S1, S2 and S3 are all connected to the capacitor C9, the resistor R22 and the diode D10; the capacitor C9 and the diode D10 are grounded at one end away from the resistor R21, the resistor R25 and the resistor R28; the resistor R22 is connected to the main control MCU at one end away from the resistor R21, the resistor R25 and the resistor R28.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention provides a sports intercom device based on Bluetooth and 4G communication, which includes a device body and a PCBA board arranged in the device body, wherein a main control MCU and a Bluetooth intercom module electrically connected to the main control MCU, a GNSS positioning communication module, a MIC module, an audio amplification output module and a switch control module are arranged on the PCBA board, wherein the Bluetooth intercom module is used for medium and short-range voice intercom, the GNSS positioning communication module has a built-in 4G network to realize long-range 4G communication intercom, and the switching between Bluetooth intercom and 4G communication intercom is controlled by the main control MCU. At the same time, the internal BT Bluetooth intercom can be used within a range of 100 meters to reduce the advantage of 4G network delay, thereby solving the problem of being unable to talk with nearby teammates due to the loss of 4G signal in the wild. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a principle block diagram of the present invention;

[0019] Figure 3 The schematic diagram of the main control MCU and its peripheral circuits of the present invention;

[0020] Figure 4 It is a circuit schematic diagram of the Bluetooth chip U2 and the peripheral circuit of the Bluetooth chip of the present invention;

[0021] Figure 5 It is a circuit schematic diagram of the audio codec circuit of the present invention;

[0022] Figure 6 It is a circuit principle diagram of the crystal oscillator circuit of the present invention;

[0023] Figure 7 This is a circuit schematic diagram of the GNSS positioning communication module of the present invention;

[0024] Figure 8 is a circuit schematic diagram of the radio frequency amplifier circuit of the present invention;

[0025] Fig. 9 is a circuit schematic diagram of the MIC module of the present invention;

[0026] Fig.10 The circuit diagram of the audio amplification output module of the present invention;

[0027] Fig.11 is a circuit schematic diagram of the switch control module of the present invention;

[0028] Fig.12 This is a circuit schematic diagram of the power supply module of the present invention;

[0029] Fig.13 It is a schematic diagram of the flow of Bluetooth intercom of the present invention.

[0030] The reference numerals and names in the figures are as follows:

[0031] 1. Device body; 11. Function switch; 2. PCBA board; 21. Main control MCU; 22. Bluetooth intercom module; 221. Bluetooth chip U2; 222. Bluetooth chip peripheral circuit; 223. Audio codec circuit; 224. Crystal oscillator circuit; 23. GNSS positioning communication module; 24. MIC module; 25. Audio amplifier output module; 26. Switch control module; 27. Power supply module. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0035] See also Figure 1 An embodiment of the present invention is: a sports intercom device based on Bluetooth and 4G communication, the sports intercom device comprising a device body 1 and a PCBA board 2 arranged in the device body 1, the device body 1 is provided with a function switch 11, the function switch 11 is electrically connected to the PCBA board 2, and the operation of the sports intercom device is controlled by the function switch 11.

[0036] See also Figure 2The PCBA board 2 in the figure is provided with a main control MCU 21 and a Bluetooth intercom module 22, a GNSS positioning communication module 23, a MIC module 24, an audio amplification output module 25 and a switch control module 26 which are electrically connected to the main control MCU 21. The Bluetooth intercom module 22 is used for medium and short distance voice intercom, and the Bluetooth intercom module 22 is composed of a Bluetooth chip U2221, a Bluetooth chip peripheral circuit 222, an audio codec circuit 223 and a crystal oscillator circuit 224. The Bluetooth chip peripheral circuit 222, the audio codec circuit 223 and the crystal oscillator circuit 224 are all connected to the Bluetooth chip U2221. In this embodiment, the model of the Bluetooth chip U2221 is ATS3025. The GNSS positioning communication module 23 is internal. A 4G network is set up to realize long-distance intercom, the MIC module 24 is used to pick up voice data, the audio amplification and output module 25 is used to analyze and play the picked up voice, the switch control module 26 is connected to the above-mentioned function switch 11, and controls the start and stop or power on and off of each function, and a power supply module 27 is also provided on the PCBA board 2, and the power supply module 27 is respectively connected to the main control MCU21, the Bluetooth intercom module 22, the GNSS positioning communication module 23, the MIC module 24, the audio amplification and output module 25 and the switch control module 26, and provides power to the main control MCU21, the Bluetooth intercom module 22, the GNSS positioning communication module 23, the MIC module 24, the audio amplification and output module 25 and the switch control module 26.

[0037] See also Figure 3 and Figure 4The Bluetooth chip peripheral circuit 222 in the figure is composed of an inductor L1, an inductor L2, an inductor L3, a capacitor C10, a capacitor C11, a capacitor C13, a capacitor C14, a capacitor C16, a capacitor C19, a capacitor C22, a capacitor C25, a capacitor C29, a capacitor C30, a capacitor C32, a capacitor C35, a capacitor C38, a capacitor C39, a resistor R26, a resistor R33, a resistor R38, a resistor R54, a resistor R55, a resistor R60, a resistor R12396 and an RF radio frequency connection terminal J6. The two ends of the inductor L1 are connected to the 27th and 28th pins of the Bluetooth chip U2 respectively; the two ends of the inductor L2 are connected to the 29th and 30th pins of the Bluetooth chip U2 respectively; the two ends of the inductor L3 are connected to the 19th and 20th pins of the Bluetooth chip U2 respectively; one end of the capacitor C10, capacitor C11, capacitor C13, capacitor C14, capacitor C16, capacitor C19, capacitor C22, and capacitor C25 are grounded, and the other ends are connected to the 6th, 22th, 28th, 20th, 30th, 9th, 8th and 7th pins of the Bluetooth chip U2 respectively. One end of resistor R26, resistor R33, resistor R54 and resistor R55 are connected to the main control MCU21, and the other ends are connected to pins 32, 33, 45 and 46 of the Bluetooth chip U2 respectively; one end of resistor R12396 is grounded, and the other end is connected to pin 2 of the Bluetooth chip U2; one end of resistor R38 is connected to the 2.8V power supply end, and the other end is connected to pin 25 of the Bluetooth chip U2; one end of capacitor C29 and capacitor C30 is connected to the main control MCU21, and the other end is ... The outer ends are respectively connected to pins 13 and 12 of the Bluetooth chip U2; one end of the capacitor C32 and the capacitor C35 are connected to the power supply module 27, and the other ends are respectively connected to pins 11 and 10 of the Bluetooth chip U2; one end of the capacitor C38 is grounded, and the other end is respectively connected to the resistor R60 and pin 1 of the Bluetooth chip U2; the end of the resistor R60 away from the capacitor C38 is respectively connected to the capacitor C39 and the RF radio frequency connection terminal J6. In this embodiment, the model of the main control MCU21 is SLM332U.

[0038] See also Figures 3 to 5The audio codec circuit 223 in the figure includes an audio codec chip U3, a resistor R42, a resistor R44, a resistor R46, a resistor R49, a resistor R52, a resistor R12387, a resistor R12388, a resistor R12389, a capacitor C12, a capacitor C15, a capacitor C17, a capacitor C18, a capacitor C20, a capacitor C23, a capacitor C21, a capacitor C24, a capacitor C31 and a capacitor C33, wherein one end of the resistor R42, the resistor R44, the resistor R46, the resistor R49 and the resistor R52 is connected to the main control MCU21, and the other end is respectively connected to the 9th, 2nd, 6th, 8th and 7th pins of the audio codec chip U3; the resistors R12387, the resistor R123 88. Resistor R12389, capacitor C12, capacitor C15, capacitor C17, capacitor C18, capacitor C20 and capacitor C23 are grounded at one end, and the other ends are respectively connected to pins 20, 1, 19, 4, 3, 11, 16, 15 and 14 of the audio codec chip U3; one end of capacitor C21 and capacitor C24 are connected to pins 4 and 5 of the Bluetooth chip U2, and the other end is connected to pins 13 and 12 of the audio codec chip U3; one end of capacitor C31 and capacitor C33 are respectively connected to pins 18 and 17 of the audio codec chip U3, and the other end is respectively connected to the power supply module 27. In this embodiment, the model of the audio codec chip U3 is: ES8311.

[0039] See also Figure 5 and Figure 6 The crystal oscillator circuit 224 in the figure includes a crystal oscillator chip Y1, a resistor R58, a resistor R59, a capacitor C41 and a capacitor C42, wherein one end of the resistor R59 is respectively connected to the resistor R58 and the pin 49 of the Bluetooth chip U2, and the other end is respectively connected to the capacitor C42, the pin 50 of the Bluetooth chip U2 and the pin 3 of the crystal oscillator chip Y1, the capacitor C42 is grounded at one end away from the resistor R59, the resistor R58 is respectively connected to the capacitor C41 and the pin 1 of the crystal oscillator chip Y1 at one end away from the resistor R59, and the pins 2 and 4 of the crystal oscillator chip Y1 are grounded.

[0040] See also Figure 7The GNSS positioning communication module 23 in the figure includes a GNSS chip U6, a capacitor C45, a capacitor C47, a capacitor C43, a capacitor C46, ​​a capacitor C50, a capacitor C51, a capacitor C52, a capacitor C54, a capacitor C55, a capacitor C59, a capacitor C48, a capacitor C53, a capacitor C57, a resistor R66, a resistor R67, a resistor R63, a resistor R68, a resistor R69, an inductor L4, a crystal oscillator chip Y2, and a crystal oscillator chip Y 3 and RF amplifier circuit, wherein one end of capacitor C45, capacitor C47, capacitor C43, capacitor C46, ​​capacitor C50, capacitor C51, capacitor C52, capacitor C54, capacitor C55, capacitor C59 and capacitor C48 are grounded, and the other ends are connected to pins 1, 5, 6, 7, 24, 38, 39, 21, 23, 17 and 10 of GNSS chip U6 respectively; one end of resistor R66, resistor R68 and resistor R69 are connected to the ground ... It is connected to the main control MCU21, and the other end is connected to pins 30, 19 and 18 of the GNSS chip U6 respectively; one end of the resistor R67 is connected to the 1.8V power supply end, and the other end is connected to pin 17 of the GNSS chip U6; one end of the capacitor C53 is grounded, and the other end is connected to pin 12 of the crystal oscillator chip Y3 and the GNSS chip U6 respectively; one end of the capacitor C57 is grounded, and the other end is connected to pin 11 of the crystal oscillator chip Y3 and the GNSS chip U6 respectively; pin 1 of the crystal oscillator chip Y2 is connected to the resistor R63, pin 2 is grounded, and pins 3 and 4 are connected to pins 3 and 2 of the GNSS chip U6 respectively; the resistor R63 is grounded at one end away from the crystal oscillator chip Y2; one end of the inductor L4 is connected to pin 10 of the GNSS chip U6, and the other end is connected to the RF amplifier circuit. In this embodiment, the model of the GNSS chip U6 is AT6558R.

[0041] See also Figure 8 The RF amplifier circuit in the figure includes an RF amplifier chip U9, a capacitor C56, a capacitor C58, an inductor L6, an inductor L7 and an RF radio frequency connection terminal J7, wherein one end of the capacitor C58 is grounded, and the other end is respectively connected to pins 4 and 5 of the RF amplifier chip U9; one end of the inductor L6 is connected to pin 40 of the GNSS chip U6, and the other end is connected to pin 6 of the RF amplifier chip U9; one end of the inductor L7 is connected to pin 3 of the RF amplifier chip U9, and the other end is connected to the capacitor C56, and the end of the capacitor C56 away from the RF amplifier chip U9 is respectively connected to the inductor L4 and the RF radio frequency connection terminal J7. In this embodiment, the model of the RF amplifier chip U9 is AT2659.

[0042] See also Fig. 9The MIC module 24 in the figure is composed of a MIC chip U5, a capacitor C40, a capacitor C44 and a capacitor C49, wherein pins 2 and 3 of the MIC chip U5 are grounded, pin 1 is connected to capacitor C40, and pin 4 is connected to capacitor C44 and capacitor C49 respectively, and the capacitor C44 is connected to the Bluetooth chip U2221 at one end away from the MIC chip U5. In this embodiment, the model of the MIC chip U5 is: MSM381A2718Z6ZM2.

[0043] See also Fig.10 The audio amplifier output module 25 in the figure includes an audio amplifier chip U4, a capacitor C34, a capacitor C36, a capacitor C37, a resistor R12397, a resistor R12398, a resistor R47, a resistor R50 and a resistor R53, wherein one end of the resistor R12397 and the resistor R12398 is grounded, and the other end is connected to the resistor R47 and the resistor R50 respectively; the ends of the resistor R47 and the resistor R50 away from the resistor R12397 and the resistor R12398 are respectively connected to the 6th and 7th pins of the audio amplifier chip U4; the two ends of the capacitor C34 are respectively connected to the audio amplifier Pins 9 and 11 of chip U4 are connected; one end of capacitor C36 and capacitor C37 are grounded, and the other ends are respectively connected to pins 12 and 8 of audio amplifier chip U4; one end of resistor R53 is connected to pin 43 of Bluetooth chip U2, and the other end is connected to pin 13 of audio amplifier chip U4; pins 10, 15 and 17 of audio amplifier chip U4 are grounded, pins 5 and 16 are connected to speakers, pins 1 and 2 are connected to main control MCU21, and pins 3 and 4 are connected to power supply module 27. In this embodiment, the model of audio amplifier chip U4 is HT4832.

[0044] See also Fig.11 The switch control module 26 in the figure is composed of a switch S1, a switch S2, a switch S3, a capacitor C9, a resistor R21, a resistor R22, a resistor R25, a resistor R28 and a diode D10, wherein one end of the switch S1, the switch S2 and the switch S3 is grounded, and the other end is connected to the resistor R21, the resistor R25 and the resistor R28 respectively; the resistor R21, the resistor R25 and the resistor R28 are connected to the capacitor C9, the resistor R22 and the diode D10 at one end away from the switch S1, the switch S2 and the switch S3; the capacitor C9 and the diode D10 are grounded at one end away from the resistor R21, the resistor R25 and the resistor R28; the resistor R22 is connected to the main control MCU21 at one end away from the resistor R21, the resistor R25 and the resistor R28.

[0045] See also Fig.12The power supply module 27 in the figure includes a power supply port J3, a resistor R3, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R11, a resistor R14, a resistor R15, a capacitor C3, a capacitor C6, a diode D1, a diode D4, a diode D5, a diode D6 and a diode D7, wherein pins 1, 2, 3, 4, A1 and A12 of the power supply port J3 are grounded; one end of the diode D1, the diode D4, the diode D5, the diode D6 and the diode D7 are grounded, and the other ends are respectively connected to pins A9, A6, B7, A5 and B5 of the power supply port J3; one end of the resistor R3 is connected to pin A4 of the power supply port J3. pin, and the other end is connected to capacitor C3; one end of capacitor C6 is grounded, and the other end is connected to pin A9 of power supply port J3; one end of resistors R5 and R7 is connected to pin B6 of power supply port J3, and the other end is connected to the above-mentioned audio amplifier chip U4 and resistor R6 respectively; one end of resistor R9 and resistor R11 is connected to pin A7 of power supply port J3, and the other end is connected to resistor R8 and audio amplifier chip U4 respectively; one end of resistor R14 is connected to the above-mentioned MIC module 24, and the other end is connected to pin A8 of power supply port J3; one end of resistor R15 is grounded, and the other end is connected to pin B8 of power supply port J3.

[0046] See also Fig.13 During Bluetooth voice intercom, during the speech processing: first press and hold the intercom MIC on the function switch 11. When a noisy sound is heard, it means that the line is occupied. If there is no noisy sound, recording can be performed normally. During the recording process, the power of the intercom device will be detected. When the power is detected to be too low, recording cannot be performed. When the power is normal, the green light is always on. During the recording process, the CODEC processes the voice and text and transmits them in packets. Then release the intercom MIC button to end the recording; during the playback processing: receive the recording, parse the voice packet, and when the thread is occupied, a beep will be heard. If the thread is not occupied, the parsed voice will be played through the speaker to achieve the purpose of intercom; when intercom is performed remotely, network calls can be made through the built-in 4G to achieve the purpose of intercom.

[0047] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A sports intercom device based on Bluetooth and 4G communication, characterized in that: The invention comprises a device body (1) and a PCBA board (2) arranged in the device body (1), wherein the PCBA board (2) is provided with a main control MCU (21) and a Bluetooth intercom module (22) electrically connected to the main control MCU (21), a GNSS positioning communication module (23), a MIC module (24), an audio amplification output module (25) and a switch control module (26), wherein the model of the main control MCU (21) is SLM332U, the Bluetooth intercom module (22) is used for medium- and short-range voice intercom, and the Bluetooth intercom module (22) is composed of a Bluetooth chip U2 (221), a Bluetooth chip peripheral circuit (222), an audio codec circuit (223) and a crystal oscillator circuit (224), wherein the Bluetooth chip peripheral circuit (222), the audio codec circuit (223) and the crystal oscillator circuit (224) are all connected to the Bluetooth chip U2 (221). ) is connected, the GNSS positioning communication module (23) has a built-in 4G network to achieve long-distance intercom, the MIC module (24) is used to pick up voice data, the audio amplification and output module (25) is used to analyze and play the picked up voice, and the switch control module (26) is used to control the start and stop or switch of each function. The PCBA board (2) is also provided with a power supply module (27), and the power supply module (27) is respectively connected to the main control MCU (21), the Bluetooth intercom module (22), the GNSS positioning communication module (23), the MIC module (24), the audio amplification and output module (25) and the switch control module (26), and provides power to the main control MCU (21), the Bluetooth intercom module (22), the GNSS positioning communication module (23), the MIC module (24), the audio amplification and output module (25) and the switch control module (26).

2. A sports intercom device based on Bluetooth and 4G communication according to claim 1, characterized in that: The device body (1) is provided with a function switch (11), and the function switch (11) is electrically connected to a switch control module (26).

3. The sports intercom device based on Bluetooth and 4G communication according to claim 1, characterized in that: The Bluetooth chip peripheral circuit (222) comprises an inductor L1, an inductor L2, an inductor L3, a capacitor C10, a capacitor C11, a capacitor C13, a capacitor C14, a capacitor C16, a capacitor C19, a capacitor C22, a capacitor C25, a capacitor C29, a capacitor C30, a capacitor C32, a capacitor C35, a capacitor C38, a capacitor C39, a resistor R26, a resistor R33, a resistor R38, a resistor R54, a resistor R55, a resistor R60, a resistor R12396 and an RF radio frequency connection terminal J6, wherein the two ends of the inductor L1 are respectively connected to the 27th and 28th pins of the Bluetooth chip U2; the two ends of the inductor L2 are respectively connected to the 29th and 30th pins of the Bluetooth chip U2; the two ends of the inductor L3 are respectively connected to the 19th and 20th pins of the Bluetooth chip U2; one end of the capacitor C10, capacitor C11, capacitor C13, capacitor C14, capacitor C16, capacitor C19, capacitor C22, and capacitor C25 are grounded, and the other ends are respectively connected to the 6th, 22nd, 28th, 20th pins of the Bluetooth chip U2. , 30, 9, 8 and 7 pins; one end of resistor R26, resistor R33, resistor R54 and resistor R55 are connected to the main control MCU (21), and the other ends are respectively connected to pins 32, 33, 45 and 46 of the Bluetooth chip U2; one end of resistor R12396 is grounded, and the other end is connected to pin 2 of the Bluetooth chip U2; one end of resistor R38 is connected to the 2.8V power supply end, and the other end is connected to pin 25 of the Bluetooth chip U2; capacitor C29 and capacitor C3 One end of capacitor C32 and capacitor C35 are connected to the power supply module (27), and the other end are connected to pins 11 and 10 of the Bluetooth chip U2; one end of capacitor C38 is grounded, and the other end is connected to resistor R60 and pin 1 of the Bluetooth chip U2; the end of resistor R60 away from capacitor C38 is connected to capacitor C39 and RF radio frequency connection terminal J6.

4. The sports intercom device based on Bluetooth and 4G communication according to claim 1, characterized in that: The audio codec circuit (223) comprises an audio codec chip U3, a resistor R42, a resistor R44, a resistor R46, a resistor R49, a resistor R52, a resistor R12387, a resistor R12388, a resistor R12389, a capacitor C12, a capacitor C15, a capacitor C17, a capacitor C18, a capacitor C20, a capacitor C23, a capacitor C21, a capacitor C24, a capacitor C31 and a capacitor C33, wherein one end of the resistor R42, the resistor R44, the resistor R46, the resistor R49 and the resistor R52 is connected to the main control MCU (21), and the other ends are respectively connected to pins 9, 2, 6, 8 and 7 of the audio codec chip U3; the resistors One end of R12387, resistor R12388, resistor R12389, capacitor C12, capacitor C15, capacitor C17, capacitor C18, capacitor C20 and capacitor C23 are grounded, and the other ends are respectively connected to pins 20, 1, 19, 4, 3, 11, 16, 15 and 14 of the audio codec chip U3; one end of capacitor C21 and capacitor C24 are connected to pins 4 and 5 of the Bluetooth chip U2, and the other ends are connected to pins 13 and 12 of the audio codec chip U3; one end of capacitor C31 and capacitor C33 are respectively connected to pins 18 and 17 of the audio codec chip U3, and the other ends are respectively connected to the power supply module (27).

5. The sports intercom device based on Bluetooth and 4G communication according to claim 1, characterized in that: The crystal oscillator circuit (224) comprises a crystal oscillator chip Y1, a resistor R58, a resistor R59, a capacitor C41 and a capacitor C42, wherein one end of the resistor R59 is respectively connected to the resistor R58 and pin 49 of the Bluetooth chip U2, and the other end is respectively connected to the capacitor C42, pin 50 of the Bluetooth chip U2 and pin 3 of the crystal oscillator chip Y1, one end of the capacitor C42 away from the resistor R59 is grounded, one end of the resistor R58 away from the resistor R59 is respectively connected to the capacitor C41 and pin 1 of the crystal oscillator chip Y1, and pins 2 and 4 of the crystal oscillator chip Y1 are grounded.

6. The sports intercom device based on Bluetooth and 4G communication according to claim 1, characterized in that: The GNSS positioning communication module (23) comprises a GNSS chip U6, a capacitor C45, a capacitor C47, a capacitor C43, a capacitor C46, ​​a capacitor C50, a capacitor C51, a capacitor C52, a capacitor C54, a capacitor C55, a capacitor C59, a capacitor C48, a capacitor C53, a capacitor C57, a resistor R66, a resistor R67, a resistor R63, a resistor R68, a resistor R69, an inductor L4, a crystal oscillator chip Y2, a crystal oscillator chip Y3 and a radio frequency amplifier circuit, wherein one end of the capacitor C45, the capacitor C47, the capacitor C43, the capacitor C46, ​​the capacitor C50, the capacitor C51, the capacitor C52, the capacitor C54, the capacitor C55, the capacitor C59 and the capacitor C48 is grounded, and the other end is respectively connected to pins 1, 5, 6, 7, 24, 38, 39, 21, 23, 17 and 10 of the GNSS chip U6; the resistor R66, the resistor R One end of the resistor R68 and the resistor R69 are connected to the main control MCU (21), and the other ends are respectively connected to the 30, 19 and 18 pins of the GNSS chip U6; one end of the resistor R67 is connected to the 1.8V power supply end, and the other end is connected to the 17 pin of the GNSS chip U6; one end of the capacitor C53 is grounded, and the other end is respectively connected to the 12 pin of the crystal oscillator chip Y3 and the GNSS chip U6; one end of the capacitor C57 is grounded, and the other end is respectively connected to the 11 pin of the crystal oscillator chip Y3 and the GNSS chip U6; pin 1 of the crystal oscillator chip Y2 is connected to the resistor R63, pin 2 is grounded, and pins 3 and 4 are respectively connected to pins 3 and 2 of the GNSS chip U6; the resistor R63 is grounded at one end away from the crystal oscillator chip Y2; one end of the inductor L4 is connected to pin 10 of the GNSS chip U6, and the other end is connected to the radio frequency amplifier circuit.

7. The sports intercom device based on Bluetooth and 4G communication according to claim 6, characterized in that: The RF amplification circuit includes an RF amplifier chip U9, a capacitor C56, a capacitor C58, an inductor L6, an inductor L7 and an RF radio frequency connection terminal J7, wherein one end of the capacitor C58 is grounded, and the other end is respectively connected to pins 4 and 5 of the RF amplifier chip U9; one end of the inductor L6 is connected to pin 40 of the GNSS chip U6, and the other end is connected to pin 6 of the RF amplifier chip U9; one end of the inductor L7 is connected to pin 3 of the RF amplifier chip U9, and the other end is connected to the capacitor C56, and the end of the capacitor C56 away from the RF amplifier chip U9 is respectively connected to the inductor L4 and the RF radio frequency connection terminal J7.

8. The sports intercom device based on Bluetooth and 4G communication according to claim 1, characterized in that: The MIC module (24) is composed of a MIC chip U5, a capacitor C40, a capacitor C44 and a capacitor C49, wherein pins 2 and 3 of the MIC chip U5 are grounded, pin 1 is connected to capacitor C40, and pin 4 is connected to capacitor C44 and capacitor C49 respectively; and the capacitor C44 is connected to the Bluetooth chip U2 (221) at one end away from the MIC chip U5.

9. The sports intercom device based on Bluetooth and 4G communication according to claim 1, characterized in that: The audio amplifier output module (25) comprises an audio amplifier chip U4, a capacitor C34, a capacitor C36, a capacitor C37, a resistor R12397, a resistor R12398, a resistor R47, a resistor R50 and a resistor R53, wherein one end of the resistor R12397 and the resistor R12398 is grounded, and the other end is connected to the resistor R47 and the resistor R50 respectively; the ends of the resistor R47 and the resistor R50 away from the resistor R12397 and the resistor R12398 are connected to the 6th and 7th pins of the audio amplifier chip U4 respectively; the capacitor C34 The two ends of the capacitor C36 and the capacitor C37 are respectively connected to the 9th and 11th pins of the audio amplifier chip U4; one end of the capacitor C36 and the capacitor C37 are grounded, and the other ends are respectively connected to the 12th and 8th pins of the audio amplifier chip U4; one end of the resistor R53 is connected to the 43rd pin of the Bluetooth chip U2, and the other end is connected to the 13th pin of the audio amplifier chip U4; the 10th, 15th and 17th pins of the audio amplifier chip U4 are grounded, the 5th and 16th pins are connected to the speakers, the 1st and 2nd pins are connected to the main control MCU (21), and the 3rd and 4th pins are connected to the power supply module (27).

10. The sports intercom device based on Bluetooth and 4G communication according to claim 1, characterized in that: The switch control module (26) is composed of a switch S1, a switch S2, a switch S3, a capacitor C9, a resistor R21, a resistor R22, a resistor R25, a resistor R28 and a diode D10, wherein one end of the switch S1, the switch S2 and the switch S3 is grounded, and the other ends are respectively connected to the resistor R21, the resistor R25 and the resistor R28; the ends of the resistors R21, the resistor R25 and the resistor R28 connected away from the switch S1, the switch S2 and the switch S3 are all connected to the capacitor C9, the resistor R22 and the diode D10; the ends of the capacitor C9 and the diode D10 away from the resistor R21, the resistor R25 and the resistor R28 are grounded; and the end of the resistor R22 away from the resistor R21, the resistor R25 and the resistor R28 is connected to the main control MCU (21).

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