WO2021253644A1 - Head worn-type voice communication apparatus - Google Patents

Abstract

Provided in an embodiment of the present disclosure is a head worn-type voice communication apparatus comprising: a head worn-type frame; a first audio device, which is arranged on the head worn-type frame and fixedly connected to the head worn-type frame; a first bone conduction vibration piece and a second bone conduction vibration piece, which are respectively arranged on the head worn-type frame and fixedly connected to the head worn-type frame; and a control unit, which is arranged on the head worn-type frame and which electrically couples with the first audio device, the first bone conduction vibration piece, the second bone conduction vibration piece, and a second audio device, wherein the control unit is configured to: receive a first audio signal from the first audio device, and output said signal via the first bone conduction vibration piece; and receive a second audio signal from the second audio device, and output said signal via the second bone conduction vibration piece. By means of the present method, audio signals from a first audio device and a second audio device can be respectively output via two bone conduction vibration pieces without switching.

Description

Head-mounted voice call device Technical field

The present disclosure relates to a wearable audio accessory, and more specifically, to a head-mounted voice call device.

Background technique

The use of walkie-talkies has gradually become popular in outdoor sports, group driving, international tourism and other life scenes, as well as in security and special operations. However, the traditional walkie-talkie is not portable and needs to be removed from a fixed position (such as a belt) when responding to a call, which results in a delay in the call. Moreover, the speaker of the walkie-talkie is affected by environmental noise, causing the quality of the call to decrease or even the call sound cannot be heard. No answer.

In the prior art, in order to solve the above-mentioned problems, an integrated audio accessory of earphone, microphone and walkie-talkie transmit button (PTT) is proposed. This kind of audio accessory connects earphone, microphone, walkie-talkie PTT and walkie-talkie body through a cable to realize the voice call of the walkie-talkie.

There are also some prior art solutions that use Bluetooth headsets or Bluetooth PTT to connect to walkie-talkies to avoid the safety hazards of accidental fatal events such as trips, falls, cuts to the head and neck trachea, and even carotid arteries caused by the use of longer cables. In other prior art solutions, the walkie-talkie is embedded in the gap between the inside of the helmet and the skull to fix the walkie-talkie.

Summary of the invention

Although the integrated audio accessory of earphone, microphone and PTT can realize timely response to calls, long cables and finger-operated PTT will bring other safety hazards to users. Moreover, after the earphone is inserted into the ear canal, the perception of the surrounding sound is reduced, thereby posing a new safety hazard.

In addition, although the use of Bluetooth headsets or Bluetooth PTT solutions can avoid the use of cables, Bluetooth is suitable for short-distance audio transmission. It crosses obstacles and has weak wall penetration capabilities. It is susceptible to interference, frequency band blocking or eavesdropping when the electromagnetic environment is complex. , The additional power supply system required will reduce reliability. Fixing the walkie-talkie inside the helmet not only reduces the helmet's protective ability and the antenna transmission efficiency of the walkie-talkie antenna, but also increases the user's non-ionizing radiation absorption rate (SAR, Specific Absorption Rate).

The present disclosure proposes a head-mounted voice communication device. The first embodiment of the present disclosure proposes a head-mounted voice call device, including: a head-mounted frame; a first audio device, which is arranged on the head-mounted frame and fixedly connected to the head-mounted frame; and a first bone The conductive vibrator and the second bone conduction vibrator are respectively arranged on the head-mounted frame and fixedly connected to the head-mounted frame; and a control unit is arranged on the head-mounted frame and connected to the first audio device and the first bone conduction vibrator , The second bone conduction vibrator is electrically coupled with the second audio device, wherein the control unit is configured to: receive a first audio signal from the first audio device, and output via the first bone conduction vibrator; and receive from the second audio device The second audio signal is output through the second bone conduction vibrator.

In this embodiment, the audio signals of the first audio device and the second audio device can be output via two bone conduction vibrators without switching (for example, a walkie-talkie call and voice navigation can be realized at the same time), which makes full use of human left and right The ear has the ability to receive audio signals transmitted by two devices at the same time. In addition, the use of bone conduction vibrators can also enable users to stay alert to the sound of the surrounding environment while listening to audio signals, reduce potential safety hazards, and reduce the interference of traditional walkie-talkie speakers to the surrounding environment.

In a preferred example, the control unit further includes: an audio amplifier, which is electrically coupled with the audio output terminal of the second audio device to selectively amplify the second audio signal; and an audio amplifier switch, which is configured as: When in the first position, the second audio signal is amplified by the audio amplifier and then output through the second bone conduction vibrator; and when in the second position, the second audio signal is directly output through the second bone conduction vibrator.

In a preferred example, the control unit further includes an amplifier control module configured to: when the audio amplifier switch is in the first position, activate the audio amplifier to amplify the second audio signal; and when the audio amplifier switch is in the second position In the second position, deactivate the audio amplifier.

In a preferred example, the control unit further includes a signal adjustment module, which is electrically coupled to the audio output terminal of the second audio device, and is configured to be before the second audio signal is amplified when the audio amplifier switch is in the first position , To compensate the low frequency signal in the second audio signal.

In a preferred example, the head-mounted voice call device further includes a first microphone and a second microphone, which are respectively fixedly connected to the head-mounted frame and electrically coupled with the control unit for communicating to the first audio device and the second microphone respectively. 2. The audio input terminal of the audio device inputs an audio signal.

In a preferred example, the control unit further includes an audio forwarding switch, which is configured to: when in the first position, electrically couple the first microphone with the audio input terminal of the first audio device, and make the second microphone and the first microphone electrically couple The audio input terminal of the second audio device is electrically coupled; and when in the second position, the audio output terminal of the first audio device is electrically coupled with the audio input terminal of the second audio device, and the audio output terminal of the second audio device is electrically coupled with The audio input terminal of the first audio device is electrically coupled.

In a preferred example, the first microphone and the second microphone are electrically coupled to the control unit via a cable, and the device further includes a radio frequency ground wire electrically coupled to the ground terminal of the first audio device, and the radio frequency ground wire is parallel to the cable wire set up.

In a preferred example, the head-mounted voice call device further includes at least one rechargeable battery for supplying power to the first audio device and the control unit, wherein the first audio device includes a charging module, and the charging module is configured to The charging of the at least one rechargeable battery is controlled.

In a preferred example, the first audio device is a walkie-talkie, and the second audio device is any one of a mobile phone, a walkie-talkie, or a Bluetooth adapter.

In a preferred example, the head-mounted frame includes an overhead load-bearing belt and a hollow semi-circular frame, wherein the control unit is connected to the first audio device, the first bone conduction vibrator, and the second audio device via a cable contained in the semi-circular frame. The bone conduction vibrator is electrically coupled with the second audio device, and the device further includes a ferrite magnetic ring sleeved on the semi-circular frame.

In a preferred example, the head-mounted voice communication device further includes a pair of cushion components, each cushion component includes a card slot, a hollow support tray and a gel, and the card slot is used for accommodating the first bone conduction vibrator Or the second bone conduction vibrator, the support tray is fixedly connected to the slot and used to contain the gel, wherein when the first bone conduction vibrator or the second bone conduction vibrator is received in the slot, the gel and the first bone The conduction vibrator or the second bone conduction vibrator is in direct contact.

In a preferred example, the head-mounted voice call device further includes a deflecting prism, and the first audio device includes a lighting device, wherein the deflecting prism is used to receive light emitted by the lighting device and deflect the light.

In a preferred example, the second audio device is detachably connected to the head-mounted voice call device.

Description of the drawings

The embodiments are shown and clarified with reference to the drawings. The drawings are used to clarify the basic principle, and thus only show the aspects necessary for understanding the basic principle. The drawings are not to scale. In the drawings, the same reference numerals indicate similar features.

Fig. 1 shows an exemplary structure diagram of a head-mounted voice call device according to an embodiment of the present disclosure;

FIG. 2 shows an exemplary structure diagram of the head-mounted voice call device in FIG. 1 from another angle;

FIG. 3 shows an exemplary structure diagram of the function control box area of the head-mounted voice call device in FIG. 1;

Fig. 4 shows an exemplary circuit diagram of the audio amplifier switch of the head-mounted voice call device in Fig. 1;

FIG. 5 shows an exemplary circuit diagram of the audio amplifier and signal adjustment module of the head-mounted voice call device in FIG. 1;

Fig. 6 shows an exemplary circuit diagram of the amplifier control module of the head-mounted voice call device in Fig. 1;

Fig. 7 shows an exemplary circuit diagram of the audio forwarding switch of the head-mounted voice call device in Fig. 1;

FIG. 8 shows an exemplary structure diagram of the microphone installation mode of the head-mounted voice call device in FIG. 1; FIG.

Fig. 9 shows an exemplary circuit diagram of the charging module of the walkie-talkie in Fig. 1;

Figures 10(a)-(c) show exemplary structure diagrams of a pair of cushion assemblies in Figure 1; and

Figs. 11(a)-(b) respectively show two examples of deflection prisms installed on the walkie-talkie in Fig. 1.

detailed description

The implementation and use of specific embodiments are described in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of specific ways to implement and use the present disclosure, and do not limit the scope of the present disclosure. In the description, the structural position of each component, such as up, down, top, bottom, etc., is not absolute, but relative. When the various parts are arranged as shown in the figure, these direction expressions are appropriate, but when the position of each part in the figure changes, these direction expressions also change accordingly. As used herein, "connected" or "coupled" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "First", "second" and similar words do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not mean a quantity limit, but mean that there is at least one.

The terms "including", "including" and similar terms used herein are open terms, that is, "including/including but not limited to", which means that other content may also be included. The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment" and so on. In this specification, the schematic representations of the above-mentioned terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradicting each other.

As mentioned earlier, too long cables, finger-operated PTTs and earphones will cause safety hazards to users. Using Bluetooth headsets or Bluetooth PTTs to connect to walkie-talkies will affect the distance and reliability of audio transmission. In addition, fixing the walkie-talkie inside the helmet not only reduces the protective ability of the helmet and the antenna emission efficiency of the walkie-talkie antenna, but also increases the user's non-ionizing radiation exposure.

In view of the above-mentioned problems, the present invention proposes a head-mounted voice call device. Hereinafter, each embodiment of the present disclosure will be described in detail by taking FIGS. 1 to 11 as examples.

First refer to Figure 1 and Figure 2. FIG. 1 shows an exemplary structural diagram of a head-mounted voice call device according to an embodiment of the present disclosure, and FIG. 2 shows an exemplary structure of the head-mounted voice call device in FIG. 1 from another angle. Structure diagram. In this embodiment, the head-mounted voice call device 100 includes a head-mounted frame 10, a first audio device 11, a first bone conduction vibrator 12, a second bone conduction vibrator 12', a function control box 13, and a first battery box. 14 and the second battery box 14', the microphone assembly 15, the Bluetooth audio adapter 16, the ferrite ring 17, a pair of cushion assemblies 18 and 18', and the deflector prism 19. In this embodiment, the first audio device 11 is a VOX (Voice Activated Transmission) small walkie-talkie. In other embodiments, the first audio device 11 and the second audio device 16 may be any audio devices capable of outputting audio signals. For ease of explanation, the head-mounted voice call device of the present disclosure will be specifically described below by taking the first audio device 11 as an intercom as an example. In other embodiments, the first audio device 11 may be any other type of audio device.

As shown in FIGS. 1 and 2, the head-mounted frame 10 is composed of an overhead load-bearing belt 101 and a hollow semi-circular frame 102. When the user wears the head-mounted voice communication device 100, the semi-circular frame 102 is located at the occipital bone of the back of the user's skull, and the overhead load-bearing belt 101 goes around the top of the user's head and is fixed on both sides of the semi-circular frame 102. The weight of the entire head-mounted voice communication device 100 is mainly distributed to the top of the head through the overhead load-bearing belt 101, and part of it is deformed by the semi-circular frame 102 through the clamping force of the first bone conduction vibrator 12 and the second bone conduction vibrator 12'. Friction to bear. . The head-mounted voice communication device of the present disclosure can be used in outdoor sports, group driving and other life scenes, security, special operations and other fields. When the user wears a semi-wrapped sports helmet, a worker’s helmet or a tactical helmet, the semi-circular frame 102 is located The lower edge of the helmet or safety helmet will not affect the wearing of the helmet or safety helmet.

In this embodiment, the overhead load-bearing belt 101 is a self-adhesive cloth belt with a width of about 20 mm, and its length can be adjusted according to actual wearing conditions. The semi-annular frame 102 is mainly supported by elastic steel wires with a diameter of about 1 mm. In other embodiments, the overhead load-bearing belt 101 can be made of other materials (such as plastic) or fabrics with other widths (such as widths of 1-50mm), and the semi-circular frame 102 can also use other elastic structures (such as elastic Plastic structural parts) for support or use elastic steel wires of other sizes (such as diameters between 0.5mm-3mm). In other embodiments, the head-mounted frame 10 may also have other structures, as long as it can be worn firmly on the head of the user.

By using the overhead load-bearing belt 101 and the semi-circular frame 102, the head-mounted voice communication device 100 can be independently and stably worn on the user's head, and is compatible with semi-wrapped sports helmets, worker helmets, and tactical helmets.

Continuing to refer to FIGS. 1 and 2, the first bone conduction vibrator 12 and the second bone conduction vibrator 12' are fixedly installed at the ends of the left and right sides of the semi-circular frame 102, respectively. The walkie-talkie 11 and the first bone conduction vibrator 12 are fixedly connected via fasteners such as screws, so the walkie-talkie 11 is fixedly connected to the head-mounted frame 10 via the first bone conduction vibrator 12. The function control box 13 is fixedly installed on the semi-annular frame 102, and the first battery box 14 and the second battery box 14' are respectively installed on both sides of it. Both the first battery box 14 and the second battery box 14' can hold one or more AA size (nominal diameter 14mm*length 50mm) batteries (such as 1.2V nickel-metal hydride batteries, 1.5V alkaline batteries, 3.7V/ 3.85V lithium ion battery, 3.2V lithium iron phosphate battery, etc.), these batteries can be connected in series or in parallel to supply power to the head-mounted voice call device 100. In this embodiment, the first battery box 14 and the second battery box 14' are respectively a single AA battery box and a double AA battery box, and three AA batteries are connected in series to supply power. The installation positions of the first battery box 14, the function control box 13 and the second battery box 14' on the semi-circular frame 102 are set to keep the center of gravity of the entire head-mounted voice communication device 100 near the base of the user’s tongue, so that The additional driving torque required by the user's head and neck muscles is small, thereby enhancing the user's wearing experience.

In addition, in the cold season, humans usually wear clothing such as cotton-padded jackets, raincoats, and hoodies with hats, so a warm, dry cavity is formed in the back of the skull. As mentioned above, the semi-circular frame 102 is located at the occiput of the back of the skull when worn by the user, so the positions of the first battery box 14, the function control box 13, and the second battery box 14' are located in this cavity, thereby The weather resistance of the battery components in the first battery box 14 and the second battery box 14' and therefore the entire head-mounted voice communication device 100 in harsh environments such as cold, wind and rain is improved.

Referring now to FIG. 3, FIG. 3 shows an exemplary structure diagram of the function control box area of the head-mounted voice call device in FIG. 1. As shown in FIG. 3, the function control box 13 includes three parts: a control unit 131, a first box body 132 and a second box body 133. The edges of the first box body 132 and the second box body 133 are respectively provided with semi-circular grooves to make the elastic steel wire 1021 of the semi-ring frame 102, the cables 1022 and 1024, the battery box wires 21 and 22 passes through the card slot and is electrically coupled with the control unit 131. The first box body 132 and the second box body 133 may be made of plastic. By fixing the walkie-talkie 11, the first bone conduction vibrator 12, the second bone conduction vibrator 12', and the function control box 13 on the head-mounted frame 10, the cable can be housed in the semi-circular frame 102 to prevent the cable from being exposed The safety hazards brought by it also ensure the effect of audio transmission, and it will not bring additional non-ionizing radiation to the user. The control unit 131 includes a circuit board 1310, an audio amplifier switch 1311, an audio forwarding switch 1312, an internal audio socket 1313, an audio amplifier, an amplifier control module, and a signal adjustment module (not shown in FIG. 3 and will be described in detail below).

In this embodiment, the cable 1022 is a twelve-core cable, consisting of two power wires (such as 26AWG wires) and 10 signal wires (such as enameled wires with a diameter of 0.2-0.3mm). These power wires and signal wires are tight Place it next to the elastic steel wire 1021. The 10 signal wires of the cable 1022 respectively indicate that one end is electrically connected to the following terminals: (1) the first microphone audio output positive; (2) the microphone ground; (3) the second microphone audio output positive; (4) battery temperature Sensor; (5) Walkie-talkie audio input positive; (6) Walkie-talkie audio input ground; (7) Walkie-talkie audio output positive; (8) Walkie-talkie audio output negative; (9) First bone conduction vibrator audio input positive; (10) No. A bone conduction vibrator audio input negative. One ends of the two power cords of the cable 1022 are electrically connected to the positive and negative poles of the power input of the walkie-talkie 11 respectively. The other ends of the signal line and the power line of the cable line 1022 are directly soldered to the circuit board 1310.

In this embodiment, the cable 1024 is composed of two signal wires (e.g., enameled wires with a diameter of 0.2-0.3 mm), which are placed close to the elastic steel wire 1021. One ends of the two signal wires of the cable 1024 are respectively electrically connected to the following terminals: (1) the second bone conduction vibrator 12' audio input positive; (2) the second bone conduction vibrator 12' audio input negative. The other ends of the two signal wires of the cable 1024 are directly soldered on the circuit board 1310. Two sheathing tubes 1023 and 1023' are respectively sheathed outside the cables 1022 and 1024, which are made of flame-retardant insulating plastic materials (for example, heat-shrinkable sheathing tubes with an inner diameter of 4.0-4.5 mm). Two sets of battery box wires 21 and 22 are respectively provided on the outside of the sheathing tubes 1023 and 1023', one end of which is electrically connected to the rechargeable battery in the first battery box 14 and the second battery box 14', and the other end is provided with The plug-in connector is electrically connected to the circuit board 1310 through a socket provided on the circuit board 1310.

The second box body 133 is provided with an external audio interface 1331, which is plugged into the internal audio socket 1313 through a plug-in connector to transmit the external audio signal to the circuit board 1310 of the control unit 131, and then to the second bone via the cable 1024 Conductive vibrator 12'. The internal audio socket 1313 is soldered on the circuit board 1310. The external audio interface 1331 may be connected to the second audio device through different interface forms, so as to transmit audio signals from the second audio device to the circuit board 1310 of the control control unit 131 via the internal audio socket 1313. In this embodiment, the internal audio socket 1313 is connected to the external audio interface 1331 via a 5-pin DuPont cable plug. The external audio interface 1331 is a 5-pin aviation plug connector with an opening of 6mm, each of its pins is electrically connected to the following terminals of the second audio device: (1) left channel audio output; (2) right channel audio output; (3) Audio output ground; (4) Audio input of the second audio device; (5) Audio output ground.

In this embodiment, as shown in FIG. 1, the head-mounted voice call device 100 further includes a Bluetooth audio adapter 16 provided between the walkie-talkie 11 and the microphone assembly 15. When using the head-mounted voice call device 100 as the audio accessory of the walkie-talkie 11 and also as a Bluetooth headset, a 3.5mm stereo audio cable can be used (the three electrodes are defined as left channel audio output, right channel audio output, and ground) The Bluetooth audio adapter 16 is connected to the external audio interface 1331 (as shown in FIGS. 1 and 2). The Bluetooth audio adapter 16 receives audio signals from other Bluetooth devices via Bluetooth, and outputs them as a second audio signal to the second bone conduction vibrator 12' via the cable 1024.

In this embodiment, the external audio interface 1331 can also be connected to other second audio devices. In addition to the Bluetooth audio adapter 16, FIG. 3 also shows two other different second audio devices, including a mobile phone 31 and another walkie-talkie 32. When connecting the mobile phone 31, you can use the 3.5mm quadrupole audio cable (the four electrodes are defined as left channel audio output, right channel audio output, ground and audio input (such as microphone)) to connect the mobile phone 31 to external audio Interface 1331. The second audio signal from the mobile phone 31 can be output to the second bone conduction vibrator 12' via the cable 1024, so that the headset voice communication device 100 serves as an audio accessory of the walkie-talkie 11 and also an audio accessory of the mobile phone 31. When connecting another walkie-talkie 32, you can use a walkie-talkie audio cable (such as a walkie-talkie audio cable with a PTT button) to connect to the external audio interface 1331, and output to the second bone conduction vibrator 12' via the cable 1024, so that the headset The wireless voice call device 100 serves as an audio accessory for the walkie-talkie 11 and another walkie-talkie 32 at the same time.

As shown in Figure 3, the second box body 133 is also provided with two holes 1332 and 1332', which are used to make the audio of the control unit 132 when the first box body 132 and the second box body 133 are assembled. The amplifier switch 1311 and the audio forwarding switch 1312 pass through and are exposed to the outside of the second box body 133, so that the user can press them to switch the operation mode of the control unit 132. The audio amplifier switch 1311 is used to selectively amplify the second audio signal of the second audio device received by the external audio interface 1331, so that the head-mounted voice call device 100 can be compatible with external ordinary digital products (such as mobile phones). 31 and a Bluetooth adapter 16) and an external walkie-talkie 32. The audio forwarding switch 1312 can make a relay between the walkie-talkie 11 and the second audio device, for example, between the walkie-talkie 11 and another walkie-talkie 32 or between the walkie-talkie 11 and the mobile phone 31 to achieve voice forwarding, thereby making the headset The voice communication device 100 can be used as a relay device (for example, when a relay is temporarily set up in the wild).

Now referring to FIG. 4 to FIG. 6, the selective audio amplification function of the head-mounted voice call device 100 will be described. FIG. 4 shows an exemplary circuit diagram of the audio amplifier switch of the headset voice call device in FIG. 1, and FIG. 5 shows an example of the audio amplifier and signal adjustment module of the headset voice call device in FIG. Fig. 6 shows an exemplary circuit diagram of the amplifier control module of the head-mounted voice call device in Fig. 1.

As shown in Figures 4 and 5, in this embodiment, the audio amplifier switch 1311 is a double-pole double-throw button switch, which has 6 terminals 1-6, of which terminals 1 and 6 are common terminals , Terminal 1 can be selectively connected to terminal 5 or terminal 3, and terminal 6 can be selectively connected to terminal 2 or terminal 4. The signal of 1331(3) from the external audio interface 1331 (connected to the audio output ground of the second audio device) is directly coupled to the terminal 5 through the C2 capacitor. In addition, the signal from 1331(2) of the external audio interface 1331 (connected to the right-channel audio output terminal of the second audio device) is input to terminal 2 after direct coupling through the C1 capacitor. At the same time, the terminal 2 and the terminal 5 are connected to the two input terminals 401 and 402 of the signal adjustment module 1315. The positive output terminal 403 and the negative output terminal 404 of the audio amplifier 1314 are connected to the terminal 4 and the terminal 3, respectively. The signal line 1024(1) of the cable line 1024 connects the terminal 6 and the audio input positive terminal of the second bone conduction vibrator 12', and the cable line 1024(2) connects the audio frequency of the terminal 1 and the second bone conduction vibrator 12' Connect the negative terminal of the input.

Therefore, when the terminal 1 is connected to the terminal 3 and the terminal 6 is connected to the terminal 4, the audio amplifier switch 1311 is in the first position, so that the positive output terminal 403 and the negative output terminal 404 of the audio amplifier 1314 are connected to the first position. The two bone conduction vibrators 12' are electrically coupled, and the amplified second audio signal from the second audio device is output to the second bone conduction vibrator 12'. When terminal 1 is connected to terminal 5, and terminal 6 is connected to terminal 2, the audio amplifier switch 1311 is in the second position, so that the audio output terminal of the second audio device is electrically coupled with the second bone conduction vibrator 12', The second audio signal from the second audio device coupled via the C1 capacitor and the C2 capacitor is output to the second bone conduction vibrator 12'.

4 and 5, the positive input terminal 401 and the negative input terminal 402 of the signal adjustment module 1315 are respectively connected to the terminal 2 and the terminal 5 of the audio amplifier switch 1311, so the signal adjustment module 1315 receives the second audio The second audio signal of the device. The output ends of the signal adjustment module 1315 are respectively connected to the two input ends of the audio amplifier 1314. When the audio amplifier switch 1311 is in the first position, the signal adjustment module 1315 compensates the low frequency signal in the second audio signal before the second audio signal is amplified. In this embodiment, the signal adjustment module 1315 is an EQ adjustment circuit (equalization adjustment circuit), which uses a low-pass filter and an adder structure to perform EQ adjustment on the second audio signal from the second audio device for compensation The bone conduction vibrator loses the low frequency signal in the process of bone conduction to the audio signal, thereby improving the sound quality. In other embodiments, the signal adjustment module may be another circuit for processing audio signals, or the signal adjustment module may be omitted.

In this embodiment, the audio amplifier 1314 adopts an automatic gain control (AGC) amplifier chip, the model is NS4145, which is produced by Shenzhen Naxinwei Technology Co., Ltd. In other embodiments, any other types or models of amplifier chips can be used. The audio amplifier 1314 with automatic gain control (AGC) function can automatically adjust the gain according to the level of the adjusted second audio signal input. When it is detected that the second audio signal is over-amplified and overload clipping occurs, the amplifier chip automatically reduces the gain to reduce the distortion, thereby achieving loud and clear audio amplification. However, in other embodiments, other types of amplifier chips or circuits can also be used.

In addition, the control terminal 405 of the audio amplifier 1314 is controlled by the amplifier control module shown in FIG. 6. The amplifier control module 1316 activates the audio amplifier 1314 when the audio amplifier switch 1311 is in the first position, so that the audio amplifier 1314 amplifies the second audio signal from the second audio device. The amplifier control module 1316 deactivates the audio amplifier 1314 when the audio amplifier switch 1311 is in the second position, so that the audio amplifier 1314 is in a non-working state.

In this embodiment, in the amplifier control module 1316, the reference voltage provided by the voltage dividing reference detection circuit 407 is provided to the negative input terminal of the voltage comparator 406, and the input terminal of the RC low-pass filter 408 is connected to the signal adjustment module 1315 The input terminal 401 of the low-pass filtered audio signal is provided to the positive input terminal of the voltage comparator 406. The input terminal 402 of the signal adjustment module 1315 is connected to the resistor R11 and then grounded. When the voltage of the output signal of the RC low-pass filter 408 is greater than the reference voltage provided by the voltage-divided reference detection circuit 407, the voltage comparator 406 outputs a high level. When the voltage of the output signal of the RC low-pass filter 408 is less than the voltage of the divided voltage When the reference voltage provided by the reference detection circuit 407 is used, the voltage comparator 406 outputs a low level. The output level of the voltage comparator 406 is divided by the D1 voltage regulator tube (such as a Zener diode or a reference voltage source) and the resistors R30 and R31 and then provided to the control terminal 405. In other embodiments, other forms of amplifier control modules can also be used, as long as they can control the activation of the audio amplifier 1314 and enter the AGC operating mode and deactivate. In this embodiment, the voltage comparator 406 adopts a voltage comparator chip of TLV3491AIDBVR produced by Texas Instruments. In other embodiments, any other types of voltage comparator chips can be used.

At the same time, referring to FIG. 4 to FIG. 6, the process of automatically activating/deactivating the audio amplifier 1314 by the amplifier control module 1316 in this embodiment will be described.

When the second audio signal needs to be amplified, the audio amplifier switch 1311 is in the first position, that is, the terminal 1 is connected to the terminal 3, and the terminal 6 is connected to the terminal 4. Only the capacitor C13 is connected between the input ends 401 and 402 of the signal adjustment module 1315, and the two ends are isolated by C1, C2, C17, and C18. Therefore, the DC resistance between the input ends 401 and 402 of the signal adjustment module 1315 is close to infinity. Correspondingly, the voltage of the output signal of the RC low-pass filter 408 is close to the power supply voltage VDD, and the voltage comparator 406 outputs a high level which is divided into voltage and supplied to the control terminal 405 of the audio amplifier 1314, thereby activating the audio amplifier 1314 to the second The audio signal is amplified.

When there is no need to amplify the second audio signal, the audio amplifier switch 1311 is in the second position, that is, the terminal 1 is connected to the terminal 5, and the terminal 6 is connected to the terminal 2. A second bone conduction vibrator 12' is connected between the input ends 401 and 402 of the signal adjustment module 1315, and the second bone conduction vibrator 12' has a small DC resistance (such as 5Ω), that is, the input end of the signal adjustment module 1315 The DC resistance between 401 and 402 is small. Correspondingly, the voltage of the output signal of the RC low-pass filter 408 is less than the reference voltage provided by the voltage dividing reference detection circuit 407, and the voltage comparator 406 outputs a low level, which is divided into voltage and supplied to the control terminal 405 of the audio amplifier 1314 Therefore, the audio amplifier 1314 is deactivated and the audio amplifier 1314 is in a non-working state, that is, the second bone conduction vibrator 12' is in a passive and passive working state to save power.

The working process of each module in FIGS. 4 to 6 will be further described below by taking the three different second audio devices shown in FIG. 3 as an example.

When the second audio device connected to the external audio interface 1331 is the mobile phone 31 or the Bluetooth adapter 16, the second audio signal is an ordinary stereo headset audio signal, and its output power is low, which is not enough to directly drive the second bone conduction vibrator 12' , So it is necessary to amplify the second audio signal. The user presses the audio amplifier switch 1311 to make it in the first position. As described above, the positive output terminal 403 and the negative output terminal 404 of the audio amplifier 1314 are connected to the terminal 4 and the terminal 3, respectively. At this time, the signals from the pins 1331(2) and 1331(3) of the external audio interface 1331 (that is, the second audio signal output by the mobile phone 31 or the Bluetooth adapter 16) are directly coupled by the capacitors C1 and C2, Input the input terminals 401 and 402 of the signal adjustment module 1315 to perform EQ adjustment. At the same time, as described above, the voltage comparator 406 outputs a high level and provides it to the control terminal 405 of the audio amplifier 1314, thereby activating the audio amplifier 1314 to amplify the second audio signal. The dynamic amplification gain of the second audio signal can be set between 5-40dB. The positive output terminal 403 and the negative output terminal 404 of the audio amplifier 1314 input the amplified second audio signal to the terminal 4 and the terminal 3 of the audio amplifier switch 1311, and the cable connected via the terminal 6 and the terminal 1 The line 1024 is output through the second bone conduction vibrator 12'.

When the second audio device connected to the external audio interface 1331 is another walkie-talkie 32, the second audio signal is a mono audio signal, and its output power is high enough to drive the second bone conduction vibrator 12', so there is no need to pair The second audio signal is amplified. The user presses the audio amplifier switch 1311 to put it in the second position. The signals from pins 1331(2) and 1331(3) of the external audio interface 1331 are directly coupled by capacitors C1 and C2, respectively, and then input to terminals 2 and 5 of the audio amplifier switch 1311, and pass through terminals 6 and The cable 1024 connected to the terminal 1 is output through the second bone conduction vibrator 12'. At the same time, the voltage comparator 406 in the amplifier control module 1316 outputs a low level, which is divided into voltage and then supplied to the control terminal 405 of the audio amplifier 1314, thereby deactivating the audio amplifier 1314, making the audio amplifier 1314 in a non-working state to save power .

By including the audio amplifier switch 1311, the audio amplifier 1314, the signal adjustment module 1315, and the amplifier control module 1316 in the control unit 131, the problem of incompatibility or universality between the walkie-talkie PTT headset and the 3.5mm headset of ordinary digital products is solved.

Now referring to FIGS. 1 to 2 and FIGS. 7 to 8, the audio forwarding function of the head-mounted voice call device 100 will be described. FIG. 7 shows an exemplary circuit diagram of the audio forwarding switch of the headset voice call device in FIG. 1, and FIG. 8 shows an exemplary structure diagram of the microphone installation method of the headset voice call device in FIG. 1.

As shown in FIG. 7, in this embodiment, the audio forwarding switch 1312 is also a double-pole double-throw button switch. Same as the audio amplifier switch 1311, it has 6 terminals 1-6, of which terminals 1 and 6 are common terminals, terminal 1 can be selectively connected to terminal 5 or terminal 3, and terminal 6 is optional Ground is connected to terminal 2 or terminal 4. As shown in FIGS. 1, 2 and 8, the microphone assembly 15 includes two microphones (such as electret microphones): a first microphone 151 and a second microphone 152. The first microphone 151 is connected to the signal lines 1022(1) and 1022(2), and the second microphone 152 is connected to the signal lines 1022(3) and 1022(2). The first microphone 151 and the second microphone 152 share a ground signal line 1022(2). The signal lines 1022(1), 1022(2), and 1022(3) are sheathed with a suspension microphone hose 81, one end of which is installed under the first bone conduction vibrator 12. The suspension microphone hose 81 is a hollow deformable hose, such as a metal corrugated hose.

Referring back to FIG. 7, the first microphone 151 is connected to the terminal 2 of the audio repeater switch 1312 through a signal line 1022(1), and the second microphone 152 is connected to the terminal 5 of the audio repeater switch 1312 through a signal line 1022(3). The signal line 1022(7) is connected to one end of the potentiometer R3, and the other end of the potentiometer R3 is connected to the signal line 1022(6) (which is connected to the audio input ground of the walkie-talkie). The potentiometer R3 is used to attenuate the audio signal from the walkie-talkie 11 and is input to the terminal 3 through the capacitor C4. The pin 1331(2) of the external audio interface 1331 is connected to one end of the potentiometer R4 via the internal audio socket 1313, and the other end of the potentiometer R4 is connected to the signal line 1022(6). The potentiometer R4 is used to attenuate the right channel audio signal from the second audio device, and is input to the terminal 4 through the capacitor C5. The pin 1331(4) of the external audio interface 1331 (which is connected to the audio input of the second audio device) is connected to the terminal 1 via the internal audio socket 1313, and the signal line 1022(5) (which is connected to the audio input positive terminal of the walkie-talkie) Connect to terminal 6.

In the normal mode, the terminal 1 of the audio forwarding switch 1312 is connected to the terminal 5, and the terminal 6 is connected to the terminal 2, and the audio forwarding switch 1312 is in the first position. The first microphone 151 is electrically coupled to the audio input terminal of the walkie-talkie 11 via signal lines 1022(1) and 1022(5), and the second microphone 152 is connected to the audio input terminal of the second audio device via signal lines 1022(3) and pins 1331(4). The audio input terminal is electrically coupled. Therefore, the audio signal from the first microphone 151 is transmitted to the audio input terminal of the walkie-talkie 11 connected to the signal line 1022(5), and the audio signal from the second microphone 152 is transmitted to the first microphone connected to the pin 1331(4). Two audio input terminals of audio equipment. In this mode, the first microphone 151 serves as the audio input device of the walkie-talkie 11, and the second microphone 152 serves as the audio input device of the second audio device.

In the relay mode, the terminal 1 of the audio forwarding switch 1312 is connected to the terminal 3, and the terminal 6 is connected to the terminal 4, and the audio forwarding switch 1312 is in the second position. The audio output end of the walkie-talkie 11 is electrically coupled to the audio input end of the second audio device via the signal line 1022 (7) and the pin 1331 (4), and the audio output end of the second audio device is electrically coupled via the pin 1331 (2) and the signal line 1022(5) is electrically coupled with the audio input terminal of the walkie-talkie 11. In this mode, the audio signals output by the walkie-talkie 11 and the second audio device are respectively attenuated, and the C4 capacitor and the C5 capacitor enter the audio input terminal of the other party after direct coupling, thereby realizing the cross interconnection of the audio signals and forming an audio relay , And users can monitor their communications at the same time.

In some embodiments, two or more head-mounted voice call devices may also be used to implement relay between multiple audio devices. For example, a first mobile phone connected to a first headset voice communication device and a first walkie-talkie on the first headset voice call device implement a relay, and the first walkie-talkie and the second headset voice call device are in turn relayed The second walkie-talkie on the computer performs radio transmission. The second walkie-talkie and the second mobile phone connected to the second head-mounted voice call device are relayed, and finally a radio voice signal is established between the first mobile phone and the second mobile phone. Transmission channel.

By including an audio forwarding switch in the control unit, it is possible to temporarily set up relays between different walkie-talkies or between walkie-talkies and other digital products (such as mobile phones), for example, in the absence of public mobile (cellular) communication networks (such as in the wild). ) Realize the voice call.

In some embodiments, mobile phones and computers pre-installed with audio encoding-decoding software commonly used by amateur radios such as SSTV, EasyPal, MultiPSK, RTTY, etc., can use the first walkie-talkie and the first walkie-talkie fixed on the headset voice call device. Another set of walkie-talkies + mobile phones and computers pre-installed with the above-mentioned software can realize the low-rate radio transmission function of image fax and binary data based on the walkie-talkie channel. This low-rate transmission method of image fax and binary data does not need to use the public frequency band of WIFI, Bluetooth, public mobile (cellular) communication network, and the user can set the communication frequency, frequency hopping, sub-tone, encoding method and other parameters on the two walkie-talkies. Make it have high confidentiality, anti-interference and survivability. This can provide users with a guarantee of local communication safety and freedom of communication in a harsh electromagnetic environment.

Continuing to refer to FIG. 8, in this embodiment, the head-mounted voice call device 100 further includes a radio frequency ground wire 82, the upper end of which is connected to the ground terminal of the walkie-talkie 11 (such as the heat sink aluminum plate, the GND plane of the circuit board, or the battery negative GND), And the signal lines 1022(1), 1022(2) and 1022(3) are arranged in the hanging microphone hose in parallel. In this embodiment, the radio frequency ground wire 82 may be a wire with a diameter between 0.1-2mm and a length between 1-50cm (preferably, an enameled copper wire with a diameter of 0.6mm and a length of 13cm), which is similar to The length of the walkie-talkie 11 body circuit board with a length of 7-10cm is combined to achieve a physical size of about 8-60cm. The common working frequency of the walkie-talkie 11 is 136-174MHz and 400-470MHz, which can be adjusted to a resonance size of about 1/4 wavelength. .

By setting up the RF ground wire, it is possible to reduce the microphone common mode interference and extend the ground net of the walkie-talkie, which means that the physical size of the entire antenna feed system is increased. After field testing with the antenna analyzer, this technical improvement can reduce the walkie-talkie The voltage standing wave ratio (VSWR) of the antenna feeder system can be fine-tuned to improve the transmission efficiency and working bandwidth of the walkie-talkie antenna feeder system. The implementation effect of the present disclosure proves its beneficialness.

Referring back to FIG. 1, the head-mounted voice call device 100 further includes a ferrite ring 17 sleeved on the semi-annular frame 102 between the first bone conduction vibrator 12 and the first battery box 14. The ferrite ring 17 is a hollow magnetic material made of ferrite material. Since the semi-circular frame 102 contains cables and steel wire conductive materials, and forms an approximately semi-circular spatial structure, which provides a short-circuit condition for the vortex electric field, a relatively large induced current will be generated in the semi-circular frame 102. At the same time, the semi-circular structure can participate in the antenna feeding process, forming upward emission side lobes, resulting in a decrease in the antenna's emission gain in the horizontal direction and an increase in the SAR value of the human body. The ferrite ring 17 is sleeved on the semi-annular frame 102 containing the cable, and has the filtering characteristics of passing low frequency and blocking high frequency, which increases the radio frequency resistance of the semi-annular frame 102 and destroys the short-circuit condition and feed of the vortex electric field. Electrical process, thus avoiding the dissipation of electromagnetic wave energy side lobe emission and the increase of human SAR value, so that the horizontal transmission gain of the antenna is basically not affected, and the interference of radio frequency current on the microphone audio signal is also eliminated.

Next, the charging module of the walkie-talkie 11 will be described with reference to FIGS. 1 to 2 and FIG. 9. FIG. 9 shows an exemplary circuit diagram of the charging module of the walkie-talkie in FIG. 1. As shown in FIGS. 1 and 2, the back of the walkie-talkie 11 is connected to the first bone conduction vibrator 12, and a charging module 111 (such as a PCB circuit board) is accommodated in the body of the walkie-talkie 11. The walkie-talkie 11 is provided with a USB interface (such as a USB TYPE-C interface or a USB Micro-B interface) to provide USB 5V power to the charging module 111 through the USB interface, and to provide power to the first battery box 14 and the second battery box 14' The AA size rechargeable battery is charged.

In the circuit diagram shown in Figure 9, F1 is a self-recovery fuse, and the parallel diodes D2 and D3 and capacitor C41 are used to reduce power supply ripple, absorb surge pulses, and prevent short-circuit, power supply reverse polarity, reverse current and other accidents. The resistor R41 sets the maximum charging current for the charging management chip 1110. In this embodiment, the charging management chip 1110 is a CN3085 Ni-MH charging management chip produced by Shanghai Ruyun Electronics Co., Ltd. In other embodiments, any other types of charge management chips can be used. Resistor R46 and capacitor C42 form an RC delay freewheeling charge. The resistors R42 and R43 form a voltage divider to determine the charging saturation voltage. One ends of the resistors R42 and R43 are connected, and the other ends are respectively connected to the two power lines of the cable 1022 to supply power to the walkie-talkie 11. The resistors R44 and R45 are connected to the signal line 1022(4) (which is connected to the thermistor in the second battery box 14', such as a thermistor with a negative temperature coefficient), for sensing the second battery box 14 The charging temperature in', so that the charging temperature is between 0-40 ℃. The resistor R47 is connected to the light-emitting diode D2 and is used to indicate the charging state.

Next, a pair of cushion components 18 and 18' of the head-mounted voice communication device will be described with reference to Figs. 1-2 and Figs. 10(a)-(c). Figures 10 (a) and (b) show side views of the first cushion assembly 18 from two angles, respectively. As shown in FIGS. 10( a) and (b ), the first cushion assembly 18 includes a first slot 181, a first support tray 182 and a first gel 183. The first slot 181 is used to accommodate the first bone conduction vibrator 12, and its size is designed to be slightly larger than the outer size of the first bone conduction vibrator 12, and its shape is matched with the first bone conduction vibrator 12 to match the first bone conduction vibrator 12 The vibrator 12 forms a nested transition fit.

The hollow first support tray 182 is fixedly connected to the first slot 181 and is used to define the shape of the first gel 183. Specifically, the first support tray 182 is a hollow thin-walled continuum, the inner wall is a smooth hollow shape, and the edge of the outer wall is provided with no less than two fold ring-like groove structures for coating The cloth glue is pasted with a plastic film to fix the edge of the first gel body 183 so that the first gel body 183 is confined in the first support tray 182. The first support tray 182 may be made of thermoplastic or metal, and the first gel 183 may be an elastic polymer material such as silicone gel, D30 gel, or water gel. When the first bone conduction vibrator 12 is received in the first slot 181, the first bone conduction vibrator 12 directly contacts the first gel body 183. In this embodiment, a small amount of glue or a conductive metal film with double-sided adhesive is applied on the back of the first gel body 183 to bond the first gel body 183 and the first bone conduction vibrator 12 together, thereby filling the first gel body 183 and the first bone conduction vibrator 12 together. A gap between the gel body 183 and the first bone conduction vibrator 12 improves the sound transmission efficiency.

In Figure 10 (a) and (b), the first slot 181 is also provided with a pair of holes 184 and 184'. Correspondingly, a pair of buckles are provided on the back of the walkie-talkie 11 at corresponding positions. When the walkie-talkie 11 and the first cushion assembly 18 that have been fixedly connected to the first bone conduction vibrator 12 are installed, the first bone conduction vibrator 12 is accommodated in the first slot 181, and the pair of buckles on the walkie-talkie 11 and The pair of clamping holes 184 and 184 ′ on the first clamping groove 181 are engaged, thereby further strengthening the strength of the mechanical connection between the first bone conduction vibrator 12 and the first cushion component 18. In other embodiments, the first slot 181 and the first bone conduction vibrator 12 may also be bonded together by glue or hot melt to increase the strength of the mechanical connection.

Similarly, Figure 10(c) shows a side view of the second cushion assembly 18'. The second cushion assembly 18' includes a second slot 181', a second support tray 182', and a second gel 183'. The second slot 181' is used to accommodate the second bone conduction vibrator 12', and its size is designed to be slightly larger than the outer size of the second bone conduction vibrator 12', and its shape is matched with the second bone conduction vibrator 12' to match The second bone conduction vibrator 12' forms a nested transition fit.

The second support tray 182' is fixedly connected to the second slot 181', and is used to define the shape of the second gel 183'. The structure of the second card slot 181' and the second support tray 182', and the installation method of the second gel body 183' and the second bone conduction vibrator 12' are similar to the first soft cushion assembly 18', so they will not be repeated here. . In this embodiment, the second slot 181' and the second bone conduction vibrator 12' are bonded together by glue or hot melt.

By arranging a soft cushion component on the bone conduction vibrator, the pressing force generated by the semi-circular frame can be dispersed, and the pressure on the skin can be reduced through the soft gel contact with the human skin, and the long-term wearing comfort of the bone conduction vibrator can be increased. Reduce the risk of pressure sores. In addition, since the contact area with the human skin is increased, the pressure on the soft tissues of the skin can be further reduced. In addition, the density of the gel is similar to the density of the soft tissue of the human body, and has good acoustic and vibration transmission performance, which is conducive to the transmission of the vibration energy emitted by the bone conduction vibrator. In addition, the soft cushion component is located between the walkie-talkie and the human body, which increases the distance between the antenna and the head and forms a good capacitive coupling condition. While reducing the SAR value of the human body, it also makes full use of the human body as the ground part of the antenna feed system. Participating in power feeding further improves the receiving and sending efficiency of the antenna system. The groove structure provided on the edge of the support tray can make the gel body fit firmly on it, can also form a structure similar to a paper cone speaker, and can also improve the efficiency of transmitting vibration energy.

Now, referring to FIG. 1 and FIG. 11(a)-(b), the deflection prism 19 of the head-mounted voice call device 100 of the present disclosure will be described. Figs. 11(a)-(b) respectively show two examples of deflection prisms installed on the walkie-talkie in Fig. 1. As shown in FIG. 1, the deflector prism 19 is installed on the top of the walkie-talkie 11 to guide the light emitted by the lighting equipment (such as a luminaire) on the top of the walkie-talkie 11 to the front of the user. As shown in FIG. 11( a ), the deflection prism 19 includes a deflection part 190 and a light guide bar 191. The deflection part 190 has a 45-degree inclined plane for deflecting the vertical light incident from the A direction (that is, the light emitted by the illuminating lamp installed on the top of the walkie-talkie 11) into horizontal light. The light guide strip 191 is in the shape of an arc, and is used to guide the deflected horizontal light to the B direction to emit. The profile of the light guide strip 191 may be a combination of smooth arcs and/or multiple flat corners. In this embodiment, the deflector prism 19 is made of transparent resin or glass, and its refractive index is greater than 1.414. Fig. 11(b) shows another example of a deflecting prism 19', which is different from the deflecting prism 19 in its shape and guiding direction of light. Different shapes of deflection prisms can be set according to specific needs, as long as they can deflect the light of the illuminating lamp on the walkie-talkie 11 to a suitable direction.

By arranging a deflecting prism on the top of the walkie-talkie, when the walkie-talkie antenna is in a vertical polar state (that is, the working condition with maximum communication coverage), the light of the illuminating lamp can be horizontally directed in front of the user. This technical improvement eliminates the need for the walkie-talkie to switch to a horizontal polarization state when using the lighting function to reduce the communication coverage. Therefore, this embodiment can avoid the mutual exclusion of the lighting function and the communication function, and these two functions can be used at the same time.

The head-mounted voice communication device of the present disclosure can enable the audio signal of a first audio device (such as a walkie-talkie) installed on the head-mounted frame to be output through the first bone conduction vibrator, and can be connected to a second audio device (such as a mobile phone) , The audio signal is output through the second bone conduction vibrator, and the two signals are independent of each other. Therefore, the present disclosure makes full use of the ability of the left and right ears of human beings to receive and distinguish audio signals from the two devices at the same time, while maintaining alertness to the surrounding environment, eliminating potential safety hazards and reducing interference to the surrounding environment.

The foregoing descriptions are only optional embodiments of the present disclosure, and are not used to limit the embodiments of the present disclosure. For those skilled in the art, the embodiments of the present disclosure may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present disclosure should be included in the protection scope of the embodiments of the present disclosure.

Although the embodiments of the present disclosure have been described with reference to several specific embodiments, it should be understood that the embodiments of the present disclosure are not limited to the specific embodiments disclosed. The embodiments of the present disclosure are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the claims accords with the broadest interpretation, so as to include all such modifications and equivalent structures and functions.

Finally, as health care workers and international amateur radio enthusiasts (also known as "HAM Radio"), the effect of the Tower of Babel (see "Old Testament | Genesis" ten Chapter 1), such as DMR, dPMR, C4FM, D-STAR, TETRA, PDT and other digital standards are not compatible with each other, you can also use the relay function of the present disclosure to achieve interconnection to eliminate the digital divide of each camp (see Science Fiction Film and Television The play "Star Trek"-universal translator and EPS relay for the universe). This helps users to use the head-mounted voice communication device safely and freely. De BH4CAZ&KD9EZG VY-73!

Claims (13)

A head-mounted voice communication device includes: Head-mounted frame A first audio device, which is arranged on the head-mounted frame and fixedly connected to the head-mounted frame; The first bone conduction vibrator and the second bone conduction vibrator are respectively arranged on the head-mounted frame and fixedly connected to the head-mounted frame; and A control unit, which is arranged on the head-mounted frame and electrically coupled with the first audio device, the first bone conduction vibrator, the second bone conduction vibrator, and the second audio device, wherein the control The unit is configured as: Receiving a first audio signal from the first audio device, and outputting it via the first bone conduction vibrator; and A second audio signal from the second audio device is received and output via the second bone conduction vibrator. The device according to claim 1, wherein the control unit further comprises: An audio amplifier electrically coupled with the audio output terminal of the second audio device to selectively amplify the second audio signal; and Audio amplifier switch, which is configured as: When in the first position, after the second audio signal is amplified by the audio amplifier, it is output through the second bone conduction vibrator; and When in the second position, the second audio signal is directly output through the second bone conduction vibrator. The device according to claim 2, wherein the control unit further comprises an amplifier control module configured to: When the audio amplifier switch is in the first position, activating the audio amplifier to amplify the second audio signal; and When the audio amplifier switch is in the second position, the audio amplifier is deactivated. The method according to claim 2, wherein the control unit further comprises a signal adjustment module, which is electrically coupled with the audio output terminal of the second audio device and is configured to be configured to operate when the audio amplifier switch is in the first At one position, before the second audio signal is amplified, the low-frequency signal in the second audio signal is compensated. The device according to claim 1, further comprising a first microphone and a second microphone, respectively fixedly connected to the head-mounted frame, and electrically coupled with the control unit, for separately communicating to the first audio device And input an audio signal to the audio input terminal of the second audio device. The device according to claim 5, wherein the control unit further comprises an audio forwarding switch configured to: When in the first position, electrically couple the first microphone with the audio input terminal of the first audio device, and electrically couple the second microphone with the audio input terminal of the second audio device; and When in the second position, the audio output terminal of the first audio device is electrically coupled with the audio input terminal of the second audio device, and the audio output terminal of the second audio device is electrically coupled It is electrically coupled with the audio input terminal of the first audio device. The device according to claim 1, wherein the first microphone and the second microphone are electrically coupled with the control unit via a cable, and the device further comprises a ground terminal connected to the first audio device An electrically coupled radio-frequency grounding wire, the radio-frequency grounding wire is arranged in parallel with the cable wire. The apparatus according to claim 1, further comprising at least one rechargeable battery for supplying power to the first audio device and the control unit, wherein the first audio device includes a charging module, and the charging module It is configured to control the charging of the at least one rechargeable battery. The apparatus according to claim 1, wherein the first audio device is a walkie-talkie, and the second audio device is any one of a mobile phone, a walkie-talkie, or a Bluetooth adapter. The device according to claim 1, wherein the head-mounted frame includes an overhead load-bearing belt and a hollow semi-circular frame, and wherein the control unit communicates with the first frame via a cable accommodated in the semi-circular frame. An audio device, the first bone conduction vibrator, the second bone conduction vibrator, and the second audio device are electrically coupled, and the device further includes a ferrite ring sleeved on the semi-circular frame . The device according to claim 1, further comprising a pair of cushion components, each cushion component includes a slot, a hollow support tray and a gel, the slot is used to accommodate the first bone conduction vibrator Or the second bone conduction vibrator, the support tray is fixedly connected to the card slot and used for accommodating the gel, wherein when the first bone conduction vibrator or the second bone conduction vibrator is accommodated in When in the card slot, the gel body is in direct contact with the first bone conduction vibrator or the second bone conduction vibrator. The apparatus according to claim 1, further comprising a deflecting prism, and the first audio device comprises a lighting device, wherein the deflecting prism is used to receive light emitted by the lighting device and deflect the light . The device according to claim 1, wherein the second audio device is detachably connected to the head-mounted voice call device.

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