Head-mounted wireless communication earphone

Abstract

The utility model discloses a head-mounted wireless communication earphone, a first earmuff is provided with a telephone transmitter, a first telephone receiver, a voice communication unit, a data communication unit, an MCU unit, a key unit, a voice data antenna and a wired data interface, and the key unit is provided with an on-off key; the second earmuff is provided with a second receiver, a battery, a power management unit, a satellite positioning and communication unit and a physiological acquisition unit; the MCU control circuit is connected with the radio frequency transceiver circuit and the audio encoding and decoding circuit, the radio frequency transceiver circuit is connected with the audio encoding and decoding circuit, and the radio frequency transceiver circuit is in communication connection with the satellite positioning and communication unit. According to the utility model, a physiological data acquisition function, a data wireless communication function and a satellite positioning and communication function are added, and the problems that the communication distance of the existing head-mounted wireless communication earphone is limited and the existing head-mounted wireless communication earphone does not have the data communication function are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wireless communication earphones, and in particular relates to a head-mounted wireless communication earphone. Background Art

[0002] Head-mounted wireless emergency communication devices are widely used in modern rescue equipment. Common types include headsets, waist-mounted devices, wristbands, and aircraft-mounted devices. Head-mounted wireless emergency communication headsets are widely used due to their numerous advantages, including ease of wear, comfort, strong human-computer interaction, and excellent noise immunity.

[0003] Since head-mounted wireless emergency communication headsets have a single communication function and can only provide half-duplex or full-duplex voice wireless communication capabilities, personnel at rescue sites in jungles, deserts and other remote areas often lose contact due to exceeding the voice communication distance, increasing the difficulty and risk of rescue. The device does not have data communication capabilities and cannot communicate data with other users while performing voice communication. Utility Model Content

[0004] The purpose of the utility model is to overcome the problems of limited communication distance and no data communication function of a head-mounted wireless emergency communication headset, and a head-mounted wireless communication headset is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A head-mounted wireless communication headset includes earmuffs, the earmuffs including a first earmuff and a second earmuff, wherein a neck ring headband assembly and a head ring cable are connected between the first earmuff and the second earmuff;

[0007] The first earmuff is provided with a microphone, a first receiver, a voice communication unit, a data communication unit, an MCU unit, a key unit, a voice data antenna and a wired data interface, and the key unit is provided with a power button; the second earmuff is provided with a second receiver, a battery, a power management unit, a satellite positioning and communication unit, and a physiological collection unit;

[0008] The MCU unit includes an MCU control circuit, which is connected to the radio frequency transceiver circuit and the audio codec circuit. The radio frequency transceiver circuit is connected to the audio codec circuit. The radio frequency transceiver circuit is communicatively connected to the satellite positioning and communication unit. The satellite positioning and communication unit is provided with a satellite antenna.

[0009] Furthermore, the voice communication unit is connected to the microphone, the first receiver, and the second receiver, and the voice communication unit and the data communication unit are connected to the voice and data antennas respectively;

[0010] The MCU unit is interconnected with the battery management unit, the data communication unit, the physiological acquisition unit, the voice communication unit, the satellite positioning and communication unit, and the key unit through a wired data interface;

[0011] The battery supplies power to the power management unit, and the power management unit supplies power to the satellite positioning and communication unit.

[0012] Furthermore, the wired data interface between the MCU unit and the battery management unit adopts an IO serial port, the wired data interface between the MCU unit and the data communication unit, the physiological acquisition unit, the voice communication unit, and the satellite positioning and communication unit adopts a TTL serial port, and the wired data interface between the key unit and the MCU unit adopts an IO serial port.

[0013] Furthermore, the second earmuff is provided with a battery compartment, and the battery is installed in the battery compartment, and the battery is a lithium battery.

[0014] Furthermore, the neck ring headband assembly includes a neck ring, with adjustment rods and a head ring bracket assembled at both ends of the neck ring, the first earmuff and the second earmuff being clipped onto the head ring bracket, the headband being worn on the neck ring, and a protective pad being provided on the headband.

[0015] Furthermore, the earmuff is provided with an earmuff shell and an ear pad, the interior of the earmuff shell is filled with sound-absorbing material; the ear pad includes a sound-absorbing inner lining and an outer cover, the ear pad is embedded with a physiological collection unit, and the physiological collection unit is provided with a wearing self-test module;

[0016] A transmitter rod is connected between the first earmuff and the transmitter, and the transmitter rod is a serpentine tube;

[0017] The button unit is provided with an up button and a down button;

[0018] The physiological acquisition unit uses a photoelectric sensor to detect heart rate and blood oxygen saturation.

[0019] Furthermore, the earmuff shell is made of engineering plastic and the sound absorbing material is made of polyurethane foam;

[0020] The sound-absorbing lining is made of sponge and the outer covering is made of protein leather;

[0021] The speaker rod is made of stainless steel and the outside of the speaker rod is wrapped with a polyethylene heat shrink tubing;

[0022] The voice and data antenna uses a built-in helical antenna, and the satellite antenna uses an active ceramic antenna;

[0023] The key unit is made of silicone rubber.

[0024] Furthermore, the power management unit includes a power protection circuit, the input end of the power protection circuit is connected to the battery, the output end of the power protection circuit is connected to the first input end of the electronic switch circuit, the first output end of the electronic switch circuit is connected to the input end of the filter circuit, the output end of the filter circuit is connected to the output end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is connected to the power end of the MCU unit, the voice communication unit, the data communication unit, and the physiological acquisition unit, the reverse connection detection end of the MCU unit is connected to the second input end of the electronic switch circuit, and the second output end of the electronic switch circuit is connected to the power end of the satellite positioning and communication unit.

[0025] Furthermore, the physiological acquisition unit is connected to the MCU control circuit.

[0026] Furthermore, the satellite positioning and communication unit includes an RDSS module and an RNSS module, and the RDSS module and the RNSS module are respectively connected to the satellite antenna.

[0027] Compared with the prior art, the present invention has the following beneficial technical effects:

[0028] The present invention proposes a wireless communication headset with a first earcup equipped with a voice communication unit, a data communication unit, and a voice and data antenna, while the second earcup is equipped with a satellite positioning and communication unit and a physiological data acquisition unit. A radio frequency transceiver circuit is connected to an audio codec circuit, which is in communication with the satellite positioning and communication unit, which is equipped with a satellite antenna. The physiological data acquisition unit collects physiological data, while the satellite positioning and communication unit, the radio frequency transceiver circuit, the audio codec circuit, and the voice and data antenna perform wireless voice and data communications. These two communications exchange data between the headset terminals. The headset functions can also be expanded and upgraded via wireless data transmission, reducing the difficulty and cost of secondary development. Compared to traditional headsets, this invention adds physiological data acquisition, wireless data communication, and satellite positioning and communication functions. The voice and data communication share the voice and data antenna built into the first earcup, while the satellite positioning and communication antenna uses the satellite antenna built into the second earcup. Both antennas are compact, space-saving, and offer strong human-computer interaction, high radiation efficiency, and high sensitivity. The physiological data acquisition unit provides users with physiological information and status, facilitating rescue and unified dispatch. Satellite positioning and communication capabilities enable rapid positioning and satellite communication via the Beidou and GPS satellite global positioning systems, breaking through the distance limitations of voice wireless communications and significantly improving communication coverage. This addresses the issue of existing head-mounted wireless communication headsets with limited communication distance and no data communication capabilities.

[0029] Furthermore, to address wireless communication issues at rescue sites in remote areas such as jungles and deserts, the system can achieve full-duplex voice communication among multiple users within a group over a range of 1km or more, supporting centerless ad hoc networks. It also features physiological information collection, supports rapid positioning and satellite communications with the Beidou and GPS global positioning systems, and has wireless data transmission capabilities, enabling the transmission and reception of data such as physiological information, battery charge, and voice communication status via digital transmission or short messages. It boasts wide communication coverage, strong communication capabilities, and is compact and lightweight.

[0030] Furthermore, it is suitable for emergency rescue operations in complex environments such as jungles and deserts. It is easy to operate and does not require professional training. The overall appearance of the machine adopts an integrated design, and the internal unit components are compact, highly integrated, durable, stable and reliable, meeting the requirements of use in complex environments. Each component adopts a modular design, which is convenient for use and replacement of consumables. It is small in size, light in weight, and easy to carry. It has low production costs and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings in the specification are used to provide further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0032] Figure 1 The figure is a schematic diagram of a head-mounted wireless emergency communication headset of the present invention.

[0033] Figure 2 The utility model is a schematic diagram of a headband of a head-mounted wireless emergency communication headset.

[0034] Figure 3 The utility model is a schematic diagram of an earmuff of a head-mounted wireless emergency communication headset.

[0035] Figure 4 The figure is a schematic diagram of the left earmuff of a head-mounted wireless emergency communication headset in an embodiment of the present invention.

[0036] Figure 5 The figure is a schematic diagram of the right earmuff of a head-mounted wireless emergency communication headset in an embodiment of the present invention.

[0037] Figure 6 The figure is a schematic diagram of an ear pad of a head-mounted wireless emergency communication headset in an embodiment of the present invention.

[0038] FIG7( a ) is a front view of the earmuff cavity of a head-mounted wireless emergency communication headset in an embodiment of the present invention.

[0039] FIG7( b ) is a side view of the earmuff cavity of a head-mounted wireless emergency communication headset in an embodiment of the present invention.

[0040] Figure 8 This is a schematic diagram of the installation of a physiological collection unit of a head-mounted wireless emergency communication headset of the present invention.

[0041] Figure 9 The utility model is a schematic diagram of a microphone of a head-mounted wireless emergency communication headset.

[0042] Figure 10 The utility model is a schematic diagram of a voice and data antenna of a head-mounted wireless emergency communication headset.

[0043] Figure 11 The utility model is a schematic diagram of the working principle of a head-mounted wireless emergency communication headset.

[0044] Figure 12 This is a block diagram of the internal system of the MCU unit circuit of a head-mounted wireless emergency communication headset of the present invention.

[0045] Figure 13 This is a block diagram of the radio frequency transceiver circuit of a head-mounted wireless emergency communication headset of the present invention.

[0046] Figure 14 The utility model is a block diagram of an audio codec circuit of a head-mounted wireless emergency communication headset.

[0047] Figure 15 This is a block diagram of the RDSS principle of a head-mounted wireless emergency communication headset of the utility model.

[0048] Figure 16 This is a RNSS principle block diagram of a head-mounted wireless emergency communication headset of the utility model.

[0049] Figure 17 This is a block diagram of a power management unit for a head-mounted wireless emergency communication headset of the present invention.

[0050] Figure 18 This is a functional block diagram of the MCU unit control software of a head-mounted wireless emergency communication headset in the utility model.

[0051] Figure 19 The utility model is a control flow chart of the MCU unit control software of a head-mounted wireless emergency communication headset.

[0052] Among them, 1 is the first earmuff, 11 is the first receiver, 12 is the voice data antenna, 13 is the button unit, 14 is the physiological collection unit, 2 is the second earmuff, 21 is the second receiver, 3 is the neck loop headband group, 31 is the neck loop, 32 is the headband, 33 is the pad, 34 is the head loop bracket, 4 is the transmitter, 41 is the transmitter rod, 5 is the head loop cable, and 6 is the ear pad. DETAILED DESCRIPTION

[0053] In order to help those skilled in the art better understand the present invention, 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 embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0055] Example 1

[0056] See also Figure 1 、 Figure 2 、 Figure 3 A head-mounted wireless communication headset includes earmuffs, the earmuffs including a first earmuff 1 and a second earmuff 2, wherein a neck ring headband assembly 3 and a head ring cable 5 are connected between the first earmuff 1 and the second earmuff 2;

[0057] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 The first earmuff 1 is provided with a microphone 4, a first receiver 11, a voice communication unit, a data communication unit, an MCU unit, a key unit 13, a voice data antenna 12 and a wired data interface, and the key unit 13 is provided with a power button; see Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 The second earmuff 2 is provided with a second receiver 21, a battery, a power management unit, a satellite positioning and communication unit, and a physiological collection unit 14;

[0058] See also Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 、 Figure 16The MCU unit includes an MCU control circuit, the MCU control circuit is connected to the RF transceiver circuit and the audio codec circuit, the RF transceiver circuit is connected to the audio codec circuit, the RF transceiver circuit is communicatively connected to the satellite positioning and communication unit, and the satellite positioning and communication unit is provided with a satellite antenna.

[0059] This embodiment provides a wireless head-mounted headset, a head-worn voice communication device. It utilizes full-duplex wireless communication, requires no keystrokes, and boasts a communication range exceeding 1 km. This headset not only achieves full-duplex wireless voice communication, exceeding the preset maximum range of 1 km for electronic fences, but also significantly improves wireless voice communication range and operating mode.

[0060] See also Figure 11 The voice communication unit is connected to the microphone 4, the first receiver 11, and the second receiver 12, and the voice communication unit and the data communication unit are respectively connected to the voice and data antenna 12; the MCU unit is interconnected with the battery management unit, the data communication unit, the physiological acquisition unit, the voice communication unit, the satellite positioning and communication unit, and the key unit 13 through a wired data interface; the battery supplies power to the power management unit, and the power management unit supplies power to the satellite positioning and communication unit.

[0061] The wired data interface between the MCU unit and the battery management unit uses an IO serial port. The wired data interface between the MCU unit and the data communication unit, physiological acquisition unit 14, voice communication unit, and satellite positioning and communication unit uses a TTL serial port. The wired data interface between the key unit 13 and the MCU unit uses an IO serial port. The second earmuff 2 is provided with a battery compartment, in which the battery is installed. The battery is a lithium battery. Figure 2 The neck ring headband group 3 includes a neck ring 31, with adjustment rods and a head ring bracket 34 assembled at both ends of the neck ring 31, the first earmuff 1 and the second earmuff 2 are clamped on the head ring bracket 34, the headband 32 is worn on the neck ring 31, and a pad 33 is provided on the headband 32.

[0062] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 7 (a), FIG7 (b), the earmuffs are provided with an earmuff shell and an ear pad 6, the interior of the earmuff shell is filled with sound-absorbing material; the ear pad 6 includes a sound-absorbing lining and an outer skin, see Figure 8 , the ear pad 6 is embedded with a physiological collection unit 14, and the physiological collection unit 14 is provided with a wearing self-test module; Figure 9The first earmuff 1 and the microphone 4 are connected to a microphone rod 41, which is a serpentine tube. The key unit 13 is provided with an up and down key. The physiological data acquisition unit 14 uses a photoelectric sensor to detect heart rate and blood oxygen saturation. Furthermore, the earmuff shell is made of engineering plastic, the sound-absorbing material is polyurethane foam, the sound-absorbing lining is sponge, and the outer cover is protein leather. The microphone rod 41 is made of stainless steel and is wrapped with a polyethylene heat-shrink tubing. Figure 10 The voice and data antenna 12 uses a built-in helical antenna, and the satellite antenna uses an active ceramic antenna. The key unit 13 is made of silicone rubber. These earbuds offer comfort, ease of use, rich functionality, light weight, and compact size. Both wireless voice and data communications share the built-in voice and data antenna in the first earcup, while the satellite positioning and communication antenna uses the built-in active ceramic antenna in the second earcup. Both antennas are compact, space-saving, and offer strong human-computer interaction, high radiation efficiency, and high sensitivity.

[0063] See also Figure 17 The power management unit includes a power protection circuit, an input end of the power protection circuit is connected to the battery, an output end of the power protection circuit is connected to a first input end of the electronic switch circuit, a first output end of the electronic switch circuit is connected to an input end of the filter circuit, an output end of the filter circuit is connected to an output end of the voltage stabilizing circuit, an output end of the voltage stabilizing circuit is connected to a power supply end of the MCU unit, a voice communication unit, a data communication unit, and a physiological acquisition unit, a reverse connection detection end of the MCU unit is connected to a second input end of the electronic switch circuit, and a second output end of the electronic switch circuit is connected to a power supply end of the satellite positioning and communication unit;

[0064] The physiological acquisition unit is connected to the MCU control circuit;

[0065] The satellite positioning and communication unit includes an RDSS module and an RNSS module, and the RDSS module and the RNSS module are respectively connected to the satellite antenna.

[0066] Current head-mounted wireless emergency communication headsets only have voice wireless communication capabilities, enabling only short-range half-duplex or full-duplex voice wireless communication. This makes them unsuitable for rescue operations in remote areas such as jungles and deserts, often leading to loss of connection. Furthermore, they lack data communication capabilities, preventing them from communicating with other users while engaged in voice communication. The wireless communication headset provided in this embodiment can transmit and receive data such as physiological information, battery charge, and voice communication status via digital transmission or short messages, extending its communication range to a global scale, significantly improving the communication capabilities of rescue equipment.

[0067] Example 2

[0068] A head-mounted wireless communication headset has the same specific structural configuration as that described in Example 1. Furthermore, the MCU unit is configured with a wireless communication encryption algorithm, the radio frequency transceiver circuit adopts linear spread spectrum modulation, the audio codec circuit adopts adaptive dynamic threshold wireless transmission, the radio frequency transceiver circuit and the audio codec circuit adopt a time division duplex transmission mode, and the satellite positioning and communication unit is configured with an electronic fence, which has a preset maximum wireless communication distance.

[0069] The wireless communication headset proposed in this embodiment, as a head-mounted emergency communication device, utilizes linear spread spectrum modulation to achieve long-range interference resistance. Compared to spread spectrum technologies such as Wi-Fi and ZigBee, it maximizes bandwidth utilization in exchange for sensitivity, offering advantages such as high sensitivity, long communication range, strong anti-interference capabilities, and low power consumption. It utilizes a fully independent communication baseband, coupled with an MCU-based encryption algorithm, such as AES128, to achieve communication encryption, protecting data confidentiality and integrity. This algorithm uses the same key for encryption and decryption, ensuring extremely high confidentiality. It utilizes time-division duplex (TDD) point-to-multipoint transmission for four-person, full-duplex wireless communication. This allows four people to talk simultaneously, with no limit on the number of receiving terminals. During a normal conversation between two people, a third or fourth person can interrupt in an emergency, effectively improving communication capabilities and better aligning with normal conversational habits. It also meets the user's usage characteristics and requirements for daily operations. It utilizes adaptive dynamic threshold control for wireless transmission and VOX voice activation, freeing the user's hands and eliminating the need for transceiver switching, allowing for conversations at any time without disrupting work. Accurately detect voice activity, improving communication performance in varying noise environments. Equipped with an electronic fence function, the device uses satellite positioning information to determine whether a person has exceeded the preset voice communication area. If the person has not exceeded the area, full-duplex voice communication will be enabled. If the person has exceeded the area, voice communication will be disabled, and communication will be conducted solely via satellite communication.

[0070] Example 3

[0071] See also Figure 18 and Figure 19, a working method of a head-mounted wireless communication headset, using a head-mounted wireless emergency communication headset, setting the current channel and volume parameters through a button unit, and communicating between the head-mounted wireless headsets after the settings are completed. When the headset presses the power button, the current channel value and volume value are read from the memory to enter the working mode; after entering the working mode, the current position information is obtained through satellite positioning, and the physiological acquisition unit completes the self-test and broadcasts the self-test result in voice, and obtains the current physiological state information, and reports the current channel, volume, positioning information and physiological information to the MCU unit; when the MCU unit of the current headset detects a voice signal in the microphone through the voice communication unit, the MCU unit determines the distance between the current headset and other headsets; if the distance does not exceed the preset maximum distance of wireless communication, a wireless call is made; if the distance exceeds the preset maximum distance of wireless communication, the current headset converts the voice into text through the audio codec circuit and sends it through a short message using the radio frequency transceiver circuit, and the other headsets receive the short message through the radio frequency transceiver circuit and parse and play the short message using the audio codec circuit.

[0072] The reverse connection detection end of the MCU unit and the second input end of the electronic switch circuit detect the power level of the switch control signal, and the power level is voice broadcast through the receiver; the physiological acquisition unit detects the heart rate and blood oxygen saturation through the red light and infrared LED of the photoelectric sensor, and the detection data of the photoelectric sensor of the physiological acquisition unit is transmitted to the MCU unit in the form of TTL serial port data. If the detection data of the physiological acquisition unit's self-test is in an abnormal state, the MCU unit is used to control the voice broadcast prompt; the audio codec circuit converts between analog voice signals and digital signals; the satellite positioning and communication unit receives the frequency signal through the satellite antenna, and the RDSS module demodulates and solves the frequency signal to obtain navigation telegram data, and the navigation telegram data is sent by the antenna feed source to complete the entry application; the RNSS module demodulates and solves the frequency signal to obtain positioning data; the battery voltage is output through the first output end of the electronic switch circuit through the filter circuit and the voltage stabilizing circuit at a reduced voltage, and the battery voltage is output through the second output end of the electronic switch circuit at a boosted voltage.

[0073] Example 4

[0074] A head-mounted wireless communication headset consists of a neck loop headband group, left and right earmuffs, a microphone group, an antenna, etc. The overall effect diagram of the head-mounted wireless emergency communication headset is shown in Figure 1 .

[0075] The neck ring headband assembly consists of a neck ring, an adjustment rod and a bracket, and a neck ring pad. Figure 2As shown, the neck ring is made of ICr18Ni19 stainless steel wire with a diameter of 2mm, offering strong weather resistance and moderate rigidity. The dimensions are designed according to the standard head shape specified in GJB 1564A-2012, "General Specification for Flight Protective Helmets." The head ring's clamping force is maintained within 10N. Tested on large, medium, and small heads, the clamping force is moderate and comfortable, eliminating discomfort after prolonged wear and improving wearing comfort. It offers easy adjustment, a comfortable fit, and a lightweight design.

[0076] Plastic adjustment rods and brackets are installed at both ends of the neckband, allowing for quick removal and replacement of the neckband assembly and quick changes in headphone shape. The pads are primarily made of sponge pads, offering excellent deformation resilience, an attractive appearance, ease of donning and dismantling, and reliable performance.

[0077] The earmuffs are mainly composed of earmuff shell, receiver, sound-absorbing sponge, ear pads and neck loop cable. The left and right earmuffs are connected to the neck loop headband. When worn, they fit the human ears and face well, adapting to a wide range of conditions and providing strong wearing comfort. Figure 3 .

[0078] The left earmuff group mainly consists of the left earmuff, receiver, voice and data antenna, PTT switch, audio interface, buttons, and ear pads. Figure 4 .

[0079] The left earcup features three control buttons: an on / off button and scroll up and down buttons, which handle power on / off, channel selection, volume, and mode selection. Simultaneous operation provides status information via voice commands, making operation simple and convenient. These buttons are made of molded silicone rubber, which is resistant to aging and breakage.

[0080] The right earmuff assembly mainly consists of the right earmuff, receiver, PCBA, battery compartment, power switch, satellite positioning and communication module, and ear pads. Figure 5 .

[0081] The main material of the earmuff shell is engineering plastic, and the earmuff components are pressed by molds. They have the advantages of high strength, good environmental adaptability and good noise isolation performance. The earmuff wall thickness and cavity design combine acoustic performance, and the inside of the earmuff shell is filled with porous sound-absorbing material, so that the earmuff has a certain isolation effect on noise.

[0082] The outer covering of the ear pad is made of protein leather, which has good corrosion resistance and extrusion deformation properties. The inner lining material is sound-absorbing sponge, which is lightweight. The ear pad fits the human ear tightly, making it more comfortable to wear. It is soft and breathable, and has excellent sealing and sound insulation performance. See the ear pad appearance diagram Figure 6 .

[0083] The earmuff cavity structure takes into account noise protection, weight, acoustic performance, and user comfort requirements. It features a large ear cavity design and uses polyurethane foam as a sound-absorbing material. This effectively allows sound waves to enter the sound-absorbing material without reflection and quickly dissipates their energy, effectively isolating noise and achieving excellent noise isolation. Diagrams of the earmuff cavity are shown in Figures 7(a) and 7(b).

[0084] In order to make the device highly integrated, with fewer connected components, and to ensure the accuracy of physiological data collection, the physiological data collection sensor was simulated and tested in different positions many times, and finally it was determined that the physiological data collection unit should be embedded in the corresponding position of the ear pad. Figure 8 After the physiological acquisition unit is encapsulated with ABS, the power supply line and signal line are led out with wires and connected to the MCU control circuit. The physiological information is prompted by short messages and self-test voice respectively.

[0085] Measurement accuracy is dependent on the wearing position, resulting in significant variations in pulse signal levels between different measurement locations. Stronger pulse signals are typically obtained near flat areas of skin, such as the fingertips or near the cheek or earlobe. The physiological data acquisition module is embedded within the ear pad, ensuring contact with the cheek and earlobe, ensuring accurate data collection without compromising wearing comfort. The module uses red and infrared LED sensors to detect heart rate and blood oxygen saturation. A self-test function is designed to verify correct wearing. Multiple test methods are programmed into the device, providing notifications such as voice notifications if abnormal data is detected, completing the self-test.

[0086] The microphone group is mainly composed of a microphone, a microphone coil, etc. Figure 9 The transmitter and plug housing are mainly made of ABS injection molding, and the transmitter coil is made of stainless steel and wrapped with polyethylene heat shrink tubing.

[0087] The microphone is connected by a metal serpentine tube, which is convenient for adjustment. It has a beautiful appearance and a reliable structure. When wearing it, the bending degree of the microphone rod can be adjusted to be placed 5mm to 10mm away from the mouth, which can adapt to different face shapes.

[0088] The voice data antenna is a built-in helical antenna installed in the left earcup of the device. The effective length is 30mm. The antenna is small in size and is directly welded on the unit board. Figure 10 .

[0089] From the perspective of physical composition, the head-mounted wireless emergency communication headset is mainly composed of a left earmuff, a right earmuff, a neck loop headband set, and a charger. The left earmuff is positioned as the main control unit, and all operations and settings are performed on this left earmuff.

[0090] From the perspective of functional composition, the head-mounted wireless emergency communication headset is mainly composed of a voice communication unit, a data communication unit, a power management unit, an MCU unit, a button unit, a satellite positioning and communication unit, a physiological acquisition unit, a voice data antenna, a wired data interface, etc.

[0091] The voice communication unit, data communication unit, MCU unit, button unit, voice data antenna, and wired data interface are designed in the left earmuff, and the power management unit, satellite positioning and communication unit, and physiological acquisition unit are designed in the right earmuff. The communication and control interconnection between the left and right earmuffs are realized by the headband cable. The left and right earmuffs are installed on the headband bracket in the form of clips. When the battery is low, it can be removed from the battery compartment of the right earmuff, and the 18650 lithium battery can be charged using a charger.

[0092] The left earmuff mainly includes: transmitter, receiver, MCU control circuit, data communication unit, key unit, voice communication unit, voice data antenna, and wired data interface socket;

[0093] The right earmuff mainly includes: receiver, 18650 lithium battery, power management unit, satellite positioning and communication unit, physiological collection unit, and satellite antenna;

[0094] Accessories include: 18650 lithium battery, charger.

[0095] The working principle of the head-mounted wireless emergency communication headset is detailed in Figure 11 .

[0096] The power management unit can stabilize and filter the power supply of the 18650 lithium battery to 3.3V and send it to the MCU unit, data communication unit, voice communication unit, and physiological acquisition unit. The power is processed separately and then sent to the vital signs monitoring component, Beidou positioning module and voice communication component for power supply. At the same time, it can boost the power supply to 5V to power the satellite positioning and communication units.

[0097] The MCU unit conducts data communication and status control with the data communication unit, physiological acquisition unit, voice communication unit, and satellite positioning and communication unit through the TTL serial port, and communicates with the key unit and power management unit through the IO port to realize power on and off control of the head-mounted wireless emergency communication headset, voice communication channel, and receiver volume adjustment.

[0098] The key unit can adjust the channel and receiving volume of the voice communication unit through the MCU unit through key operation, and can also turn the head-mounted wireless emergency communication headset on and off through key operation.

[0099] The data communication unit is connected to the built-in voice data antenna and can communicate data with the MCU unit through the TTL serial port, so as to wirelessly send and receive personnel location information, physiological information and other data.

[0100] The voice communication unit is connected to a microphone, a receiver, and a built-in voice data antenna. The microphone converts acoustic signals into electrical signals, which serve as the voice communication unit's input. The receiver, as the voice communication unit's output, converts electrical signals into acoustic signals for the user to hear. The voice communication unit communicates data with the MCU via a TTL serial port. The MCU then synthesizes and processes voice signals, controls voice communication status, and implements voice encryption algorithms. The voice communication unit and the built-in voice antenna enable voice communication networking and full-duplex wireless voice communication within the group.

[0101] The satellite positioning and communication unit and satellite antenna are integrated into the design. The satellite positioning and communication unit can communicate data with the MCU unit through the TTL serial port to complete satellite positioning. It can also realize the sharing of location information, physiological data, voice communication channels and volume, battery power and other information between personnel through satellite communication.

[0102] The physiological acquisition unit can communicate the collected physiological data of the personnel with the MCU unit through the TTL serial port, and indirectly realize data exchange with the data communication unit and the satellite positioning and communication unit.

[0103] The MCU unit uses the domestically produced HC32F460 series high-speed processor, which features low power consumption and low voltage. The chip's main frequency is no less than 200 MIPS. The MCU circuit is the control core of the product, primarily responsible for multi-slot voice information compression and decompression, frame data transmission / reception, multi-channel voice data multiplexing and synthesis, as well as the processing, distribution, and coordination of a large amount of information such as related control information, data information, and external data interfaces. To reduce the complexity of the hardware circuit, the processing of multi-channel voice data is completed through software. The internal system block diagram of the MCU circuit is shown in Figure 12 .

[0104] The RF transceiver unit uses a low-voltage professional communication chip with a spread spectrum function in the 900MHz frequency band, which has certain anti-interference capabilities and confidentiality performance. The chip has a wide operating frequency range and includes RF transceiver and transceiver conversion, modulation and demodulation, frequency synthesis, programmable transmission power control, SPI serial data communication and other functions, thereby realizing RF modulation and demodulation. Only a crystal oscillator and a small number of filtering components need to be connected externally. All parameters including the channel transmission frequency can be configured through the chip's internal configuration register using the SPI serial line. The processor in the product can be flexibly configured according to the channel modulation method and transmission rate. See the block diagram of the RF transceiver circuit for details. Figure 13 .

[0105] The audio codec unit mainly converts the analog voice signal of the personnel into a digital signal that is easy to transmit and store, and the receiving end restores the digital signal to an analog signal. The circuit chip has selected a professional chip with multiple input and output and expandable audio power. The chip ADC and DAC signal-to-noise ratio can reach 100dB. The data rate of 8K~192Kbit / s can be selected as needed. All parameters including gain control, filter selection, A / D, D / A conversion, etc. can be configured through the configuration register inside the chip using the IIC serial line. The voice output is output by the HPL and LOL ports of the audio codec chip. The audio output amplitude is adjustable so that the receiver audio output is not less than 90dB. See the structural diagram of the audio codec circuit Figure 14 .

[0106] The satellite positioning and communication unit adopts a design concept that supports multi-mode satellite navigation systems. It is compatible with civilian Beidou and GPS satellite positioning, improving service accuracy, enhancing signal stability, and expanding application areas without significantly increasing costs. In emergency situations, it can utilize the Beidou satellite navigation system for satellite communication, supporting the reception and positioning solution of Beidou RNSS multi-frequency signals, the reception and positioning solution of BDSBAS satellite-based augmentation signals, and pseudo-range differential RTD positioning. It supports the reception of Beidou S1I and S1Q frequency signals, and the transmission of Lf0 to Lf3 frequencies, realizing positioning reporting, message communication, and command functions. It also supports the reception of Beidou global short message B2b frequency signals and the transmission of Lf4 frequency signals, realizing positioning reporting, message communication, and global search and rescue functions.

[0107] The satellite positioning and communication unit integrates the baseband board and antenna, housed within the right earcup, with the antenna hidden. The transceiver antenna receives the S- and B1-frequency signals of all BeiDou-2 satellites within its field of view and transmits the modulated L-frequency inbound BeiDou satellite uplink signals via the antenna feed. The RDSS module filters and performs low-noise amplification on the BeiDou satellite downlink S-frequency signals, then demodulates and calculates the signals according to the BeiDou satellite signal entry and exit protocol to generate navigation message data. It also modulates the L-frequency inbound BeiDou satellite uplink signals, filters and amplifies them, and transmits them via the L-frequency antenna feed to complete the entry request. The RNSS module filters and performs low-noise amplification on the B1-frequency downlink signals, then demodulates and calculates them to generate positioning data.

[0108] RDSS principle block diagram see Figure 15 , RNSS principle block diagram see Figure 16 .

[0109] The physiological data acquisition unit uses a photoelectric sensor. The sensor and circuit board are integrated into a small module. The sensor's red and infrared LEDs detect heart rate and blood oxygen saturation, and the test data is transmitted to the MCU unit via TTL serial port data. The physiological data acquisition unit is designed with a self-test function to check whether the wearer is wearing the correct position. The software design has multiple test methods. If the test data is abnormal, the MCU unit will control the voice broadcast and other methods to prompt, completing the self-test function.

[0110] The power management unit has anti-reverse polarity measures, which are sent to the electronic switch circuit and the operation button through the MCU unit to realize power-on control. After passing through the filter circuit of each path, the processed DC3.7V is stabilized to 3.3V and sent to the MCU unit, voice communication unit, data communication unit, physiological acquisition unit, Beidou positioning unit, and physiological acquisition unit respectively. The processed DC3.7V is boosted and stabilized to 5V and then sent to the satellite positioning and communication unit and satellite antenna for power supply. The power management unit has the function of detecting the current power and can make voice broadcasts through the receiver under the control of the MCU unit. The block diagram of the power management unit is as follows Figure 17 shown.

[0111] The control software of the MCU unit is written in Keil to complete the control of the head-mounted wireless emergency communication headset and realize wireless communication between head-mounted wireless emergency communication headsets. The main functions realized by the main control software include satellite positioning function, physiological detection function, data communication function, wireless call function, voice recognition function, short message function, channel volume setting function, etc. The functional block diagram is shown in Figure 18 . Control software control flow chart see Figure 19 .

[0112] When the headset is powered on, the current channel value and volume value are read from the memory.

[0113] After entering the working mode, the current location information is obtained through the satellite positioning function. After the physiological detection module completes the self-test, it broadcasts the self-test results by voice and obtains the current physiological status information. The current channel, volume, positioning information, and physiological information are reported through the data communication function.

[0114] When a voice signal is detected, the device determines the distance between this device and other devices. When the distance exceeds the maximum distance of wireless communication, the voice recognition function converts the voice into text, and then sends it through the short message function. When the device receives the short message, it parses and plays it.

[0115] Use the buttons to set the current channel and volume parameters. After the settings are completed, the head-mounted wireless emergency communication headset can communicate with the headset.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the utility model, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the utility model.

Claims

1. A head-mounted wireless communication headset, characterized in that: The earmuffs include a first earmuff and a second earmuff, and the first earmuff and the second earmuff are connected between a neck ring headband assembly and a head ring cable; The first earmuff is provided with a microphone, a first receiver, a voice communication unit, a data communication unit, an MCU unit, a key unit, a voice data antenna and a wired data interface, and the key unit is provided with a power button; The second earmuff is provided with a second receiver, a battery, a power management unit, a satellite positioning and communication unit, and a physiological collection unit; The MCU unit includes an MCU control circuit, which is connected to the radio frequency transceiver circuit and the audio codec circuit. The radio frequency transceiver circuit is connected to the audio codec circuit. The radio frequency transceiver circuit is communicatively connected to the satellite positioning and communication unit. The satellite positioning and communication unit is provided with a satellite antenna.

2. The wireless communication headset according to claim 1, wherein: The voice communication unit is connected to the transmitter, the first receiver, and the second receiver, and the voice communication unit and the data communication unit are connected to the voice and data antennas respectively; The MCU unit is interconnected with the battery management unit, the data communication unit, the physiological acquisition unit, the voice communication unit, the satellite positioning and communication unit, and the key unit through a wired data interface; The battery supplies power to the power management unit, and the power management unit supplies power to the satellite positioning and communication unit.

3. The wireless communication headset according to claim 2, wherein: The wired data interface between the MCU unit and the battery management unit uses an IO serial port, the wired data interface between the MCU unit and the data communication unit, physiological acquisition unit, voice communication unit, and satellite positioning and communication unit uses a TTL serial port, and the wired data interface between the key unit and the MCU unit uses an IO serial port.

4. The wireless communication headset according to claim 1, wherein: The second earmuff is provided with a battery compartment, in which the battery is installed. The battery adopts a lithium battery.

5. The wireless communication headset according to claim 1, wherein: The neck ring headband assembly comprises a neck ring, with adjustment rods and a head ring bracket assembled at both ends of the neck ring, a first earmuff and a second earmuff clamped on the head ring bracket, a headband worn on the neck ring, and a protective pad arranged on the headband.

6. The wireless communication headset according to claim 1, wherein: The earmuffs are provided with an earmuff shell and an ear pad, the interior of the earmuff shell is filled with sound-absorbing material; the ear pad includes a sound-absorbing inner lining and an outer cover, the ear pad is embedded with a physiological collection unit, and the physiological collection unit is provided with a wearing self-test module; A transmitter rod is connected between the first earmuff and the transmitter, and the transmitter rod is a serpentine tube; The button unit is provided with an up button and a down button; The physiological acquisition unit uses a photoelectric sensor to detect heart rate and blood oxygen saturation.

7. The wireless communication headset according to claim 6, characterized in that: The earmuff shell is made of engineering plastic, and the sound-absorbing material is polyurethane foam; The sound-absorbing lining is made of sponge and the outer covering is made of protein leather; The speaker rod is made of stainless steel and the outside of the speaker rod is wrapped with a polyethylene heat shrink tubing; The voice and data antenna uses a built-in helical antenna, and the satellite antenna uses an active ceramic antenna; The key unit is made of silicone rubber.

8. The wireless communication headset according to claim 1, wherein: The power management unit includes a power protection circuit, an input end of the power protection circuit is connected to the battery, an output end of the power protection circuit is connected to the first input end of the electronic switch circuit, the first output end of the electronic switch circuit is connected to the input end of the filter circuit, the output end of the filter circuit is connected to the output end of the voltage stabilizing circuit, the output end of the voltage stabilizing circuit is connected to the power end of the MCU unit, the voice communication unit, the data communication unit, and the physiological acquisition unit, the reverse connection detection end of the MCU unit is connected to the second input end of the electronic switch circuit, and the second output end of the electronic switch circuit is connected to the power end of the satellite positioning and communication unit.

9. The wireless communication headset according to claim 1, wherein: The physiological acquisition unit is connected to the MCU control circuit.

10. The wireless communication headset according to claim 1, characterized in that: The satellite positioning and communication unit includes an RDSS module and an RNSS module, and the RDSS module and the RNSS module are respectively connected to the satellite antenna.

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