Wireless explanation system and method

Abstract

The invention relates to a wireless explanation system and method, and the system comprises a tour guide terminal which is configured to send pairing request information through a first wireless mode, and the pairing request information at least comprises a tour guide terminal device identifier and a communication protocol parameter; the tourist end is configured to send feedback information to the tour guide end in response to the pairing request information when it is detected that the distance between the tourist end and the tour guide end is smaller than a preset threshold value, and the feedback information comprises a tourist end equipment identifier; the tour guide end is further configured to establish a pairing relationship with the tourist end based on the feedback information, and can perform audio signal transmission with the tourist end in a second wireless mode after successful pairing; wherein the first wireless mode is different from the second wireless mode, the first wireless mode is a near field communication mode, and the second wireless mode is a high bandwidth mode. According to the invention, the requirements of high security, high data transmission quantity and low delay can be met at the same time.

Description

Technical Field

[0001] The present invention relates to the field of electronic communication, and particularly to a wireless interpretation system and method. Background Art

[0002] Travel is a good way to relax the body and mind. To meet the travel needs of people, various tourist attractions have been developed across the country, including natural tourist attractions and cultural tourist attractions, etc.

[0003] When people play in tourist attractions, whether it is a natural tourist attraction with complex terrain or a cultural tourist attraction with profound historical and cultural heritage, there is a need for scenic area interpretation. In natural tourist attractions, tour guides can explain the terrain features, the formation reasons of the terrain, and provide services such as route guidance for tourists. In cultural tourist attractions, the explanations by tour guides combining historical culture and the current situation of the scenic spots can enable people to better enjoy the journey.

[0004] In the existing tour guide interpretation and guidance systems, usually tour guides hold large speakers or use amplifiers for interpretation. If there are many tour groups in the scenic area, interference will occur between them. In addition, the interpretation methods of large speakers and amplifiers will also generate various noises, affecting people's travel experience. Summary of the Invention

[0005] In order to solve the above technical problems or at least partially solve the above technical problems, the present invention provides a wireless interpretation system and method.

[0006] In a first aspect, the present invention provides a wireless interpretation system, the system comprising: A tour guide terminal, configured to send a pairing request message through a first wireless mode, the pairing request message at least including a tour guide terminal device identifier and communication protocol parameters; A tourist terminal, configured to, when detecting that the distance from the tour guide terminal is less than a preset threshold, in response to the pairing request message, send feedback information to the tour guide terminal, the feedback information including a tourist terminal device identifier; The tour guide terminal is further configured to establish a pairing relationship with the tourist terminal based on the feedback information, and be able to perform audio signal transmission with the tourist terminal through a second wireless mode after successful pairing; Wherein, the first wireless mode is different from the second wireless mode, the first wireless mode is a near field communication mode, and the second wireless mode is a high bandwidth mode.

[0007] Optionally, the first wireless mode is an NFC mode, and the tour guide terminal is further used for: Sending a tour guide terminal radio frequency field, the tour guide terminal radio frequency field generating the pairing request message; Among them, the device identifier of the tour guide terminal in the pairing request information is the MAC address of the tour guide terminal, and the communication protocol parameters in the pairing request information are NFC communication protocol parameters and second wireless mode communication protocol parameters.

[0008] Optionally, the tourist terminal is further configured to obtain energy from the radio frequency field of the tour guide terminal and receive the pairing request information after obtaining the energy; The tourist terminal is further configured to send feedback information of the first wireless mode to the tour guide terminal according to the pairing request information of the first wireless mode; Among them, the feedback information includes that the device identifier of the tourist terminal is the MAC address of the tourist terminal.

[0009] Optionally, the tourist terminal is further configured to: Send a tourist terminal radio frequency field, and the feedback information is generated in the tourist terminal radio frequency field; Among them, the feedback information includes that the device identifier of the tourist terminal is the MAC address of the tourist terminal, and the coverage range of the tourist terminal radio frequency field is less than the preset threshold.

[0010] Optionally, the system further includes a tour guide hat and a tourist hat, the tour guide terminal is arranged on the brim of the tour guide hat, and the tourist terminal is arranged on the brim of the tourist hat.

[0011] Optionally, the system further includes a microphone, the microphone is arranged on the brim of the tour guide hat, the microphone is electrically connected to the tour guide terminal, and the microphone is configured to collect the explanation voice and convert the explanation voice into the audio signal.

[0012] Optionally, the system further includes: A tour guide terminal antenna, arranged on the brim of the tour guide hat; A tour guide terminal wire, arranged along the edge of the brim of the tour guide hat; Among them, the tour guide terminal antenna is connected to the tour guide terminal through the tour guide terminal wire.

[0013] Optionally, the tour guide terminal is further configured to be connected to a mobile phone terminal through the second wireless mode, receive music signals from the mobile phone terminal, and / or be connected to the mobile phone terminal to make a call; The tourist terminal is further configured to be connected to a mobile phone terminal through the second wireless mode, receive music signals from the mobile phone terminal, and / or be connected to the mobile phone terminal to make a call.

[0014] In a second aspect, a wireless explanation method is provided, and the method includes: The tour guide terminal sends pairing request information through the first wireless mode, and the pairing request information at least includes a tour guide terminal device identifier and communication protocol parameters; When the tourist terminal detects that the distance from the tour guide terminal is less than a preset threshold, it sends feedback information to the tour guide terminal in response to the pairing request information, and the feedback information includes the tourist terminal device identifier; The tour guide terminal establishes a pairing relationship with the tourist terminal based on the feedback information, and can perform audio signal transmission with the tourist terminal through a second wireless mode after successful pairing; Wherein, the first wireless mode is different from the second wireless mode, the first wireless mode is a near-field communication mode, and the second wireless mode is a high-bandwidth mode.

[0015] Optionally, the first wireless mode is the NFC mode. The tour guide terminal sends the pairing request information through the first wireless mode, including: The tour guide terminal sends a tour guide terminal radio frequency field, and the pairing request information is generated in the tour guide terminal radio frequency field; Wherein, the tour guide terminal device identifier in the pairing request information is the tour guide terminal MAC address, and the communication protocol parameters in the pairing request information are NFC communication protocol parameters and second wireless mode communication protocol parameters.

[0016] The present invention provides a wireless interpretation system and method. The system includes: a tour guide terminal configured to send pairing request information through a first wireless mode, the pairing request information at least including a tour guide terminal device identifier and communication protocol parameters; a tourist terminal configured to, when detecting that the distance from the tour guide terminal is less than a preset threshold, send feedback information to the tour guide terminal in response to the pairing request information, the feedback information including a tourist terminal device identifier; the tour guide terminal is further configured to establish a pairing relationship with the tourist terminal based on the feedback information, and can perform audio signal transmission with the tourist terminal through a second wireless mode after successful pairing; wherein, the first wireless mode is different from the second wireless mode, the first wireless mode is a near-field communication mode, and the second wireless mode is a high-bandwidth mode. The wireless interpretation system according to the embodiment of the present invention includes a tour guide terminal and a tourist terminal. The tour guide terminal and the tourist terminal can be paired, and audio signals can be transmitted after successful pairing, that is, the tour guide terminal can transmit audio signals to the tourist terminal for interpretation. In the embodiment of the present invention, when the tourist terminal is within a preset distance from the tour guide terminal, it receives the pairing request information of the first wireless mode and can perform subsequent pairing, which makes the pairing between the tour guide terminal and the tourist terminal more accurate, and has higher security and privacy. After successful pairing, the present invention uses the high-bandwidth second wireless mode to transmit audio signals, can transmit more data, and has lower transmission delay. Therefore, the embodiment of the present invention can meet the requirements of high security, high data transmission volume and low delay at the same time. Description of the Drawings

[0017] The accompanying drawings here are incorporated into and form a part of this specification, showing embodiments consistent with the present invention and, together with the specification, are used to explain the principles of the present invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 The following shows a schematic diagram of the wireless interpretation system according to an embodiment of the present invention; Figure 2 The following shows a schematic diagram of the tour guide hat according to an embodiment of the present invention; Figure 3 The following shows a schematic diagram of two Bluetooth modes according to an embodiment of the present invention; Figure 4 The following shows a flowchart of the wireless interpretation method according to an embodiment of the present invention; Figure 5 The following shows a schematic diagram of the microphone according to an embodiment of the present invention. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0021] Figure 1 The following shows a schematic diagram of the wireless interpretation system according to an embodiment of the present invention. As Figure 1 shown, the system includes: A tour guide terminal 110, configured to send a pairing request message through a first wireless mode, where the pairing request message at least includes the device identifier and communication protocol parameters of the tour guide terminal 110; A tourist terminal 120, configured to, when detecting that the distance from the tour guide terminal 110 is less than a preset threshold, send feedback information to the tour guide terminal 110 in response to the pairing request message, where the feedback information includes the device identifier of the tourist terminal 120; The tour guide terminal 110 is further configured to establish a pairing relationship with the tourist terminal 120 based on the feedback information and be able to perform audio signal transmission with the tourist terminal 120 through a second wireless mode after successful pairing; Among them, the first wireless mode is different from the second wireless mode. The first wireless mode is a near-field communication mode, and the second wireless mode is a high-bandwidth mode.

[0022] The wireless explanation system according to the embodiment of the present invention includes a tour guide terminal 110 and a tourist terminal 120. The tour guide terminal 110 and the tourist terminal 120 can be paired through the first wireless mode. After successful pairing, audio signals can be transmitted through the second wireless mode. That is, the tourist terminal 120 can wirelessly receive the voice explanation transmitted by the designated tour guide terminal 110, which is more convenient and standardized for the tour guide to broadcast the voice explanation in a large scenic area or a multi-person group scenic area, and the noise generated in the scenic area is small; when the tourist terminal 120 is within a preset distance (≤10 cm) from the tour guide terminal 110, it can receive the pairing request information of the first wireless mode and can perform subsequent pairing, which makes the pairing between the tour guide terminal 110 and the tourist terminal 120 more accurate, and has higher security and privacy. After successful pairing, the present invention uses the second wireless mode with high bandwidth to transmit audio signals, which can transmit more data and has lower transmission delay. Therefore, the embodiment of the present invention can simultaneously meet the requirements of high security, high data transmission volume, and low delay.

[0023] In the embodiment of the present invention, the first wireless mode is the NFC mode, and the tour guide terminal 110 is further configured to send a tour guide terminal radio frequency field, and the pairing request information is generated in the tour guide terminal radio frequency field; Among them, the tour guide terminal device identifier in the pairing request information is the tour guide terminal MAC address, and the communication protocol parameters in the pairing request information are NFC communication protocol parameters and second wireless mode communication protocol parameters.

[0024] The NFC mode is a short-distance high-frequency wireless communication technology, which can also be called the near-field mode. The NFC technology has extremely high security, has performance advantages in short-distance communication, and more importantly, has a lower cost. Therefore, the embodiment of the present invention uses the NFC mode for pairing, which has extremely high security and performance advantages.

[0025] Specifically, an NFC module is configured in the tour guide terminal 110, which can continuously or intermittently emit a tour guide terminal radio frequency field, and can be started or closed through a control instruction, started when pairing is required, and closed when pairing is not required, making the pairing more flexible, and also avoiding power consumption due to long-term opening or accidental touch connection.

[0026] When the NFC module is started, pairing request information is generated and a radio frequency field is continuously sent to the outside world, which includes device identification, communication protocol parameters, and pairing instructions. The device identification refers to the tour guide terminal MAC address (which uniquely identifies the device), that is, each tour guide terminal 110 has an independent device identification, and each tour guide terminal is assigned a different number according to the independent device identification. The tourist terminal 120 selects the corresponding tour guide terminal 110 for pairing. For example, when there are multiple tour groups in the scenic area, generally one tour guide terminal 110 leads multiple tourist terminals 120. The tourist terminal 120 can clearly select the tour guide terminal 110 belonging to its own group for pairing. As long as the tourist terminal 120 approaches the tour guide terminal 110 that needs to be paired, the tour guide terminal 110 can accurately bind and wirelessly connect with the tourist terminals of its own group, making the pairing faster and more accurate. When pairing, the tourist terminal 120 will also display or broadcast the corresponding tour guide terminal 110 number for the tourist terminal to confirm whether the current pairing is correct. In this way, compared with the pairing method of wireless Bluetooth search, it avoids pairing chaos or pairing errors caused by signal interference when there are multiple people in the group in the scenic area.

[0027] The communication protocol parameters include NFC communication protocol parameters and second wireless mode communication protocol parameters. The NFC communication protocol parameters refer to the NFC communication version and protocol, which are used to identify and establish an NFC connection. The second wireless mode communication protocol parameters further include the configuration parameters (such as SSID, encryption method, frequency band, etc.) of the second wireless mode (such as Bluetooth), that is, the second wireless mode is automatically switched after pairing to transmit voice information. The pairing instruction refers to the request instruction that triggers the feedback of the tourist terminal 120 and is used to request to establish a connection in the second wireless mode with the tour guide terminal 110.

[0028] In an embodiment of the present invention, the second wireless mode may be a Bluetooth mode. The tour guide terminal 110 and the tourist terminal 120 also have Bluetooth modules. When pairing, the tour guide terminal 110 sends Bluetooth parameters through the NFC radio frequency field, including the Bluetooth MAC address of the tour guide terminal, the pairing key, and the protocol configuration. The protocol configuration refers to the Bluetooth protocol version (such as 5.0), the audio transmission protocol (such as A2DP), and the encryption algorithm (such as AES-256). After completing the pairing, the Bluetooth module is started. At the same time, a whitelist is generated according to the MAC address of the tourist terminal in the NFC interaction, and only devices within the whitelist are allowed to initiate a connection. After establishing a Bluetooth connection, the tour guide terminal 110 transmits audio to the paired tourist terminals 120 through multicast / broadcast. When transmitting audio one-to-many, the stability of audio transmission is ensured. In this way, the explanation voice audio is transmitted wirelessly via Bluetooth, avoiding noise pollution in the scenic area caused by using a loudspeaker for external playback. In addition, the Bluetooth mode has a relatively long usage distance, so that in the system of the embodiment of the present invention, the tour guide terminal 110 and the tourist terminal 120 can still be used when they are at a relatively long distance from each other, meeting the explanation needs of users while ensuring a comfortable social distance between users. In addition, the Bluetooth mode has a relatively wide bandwidth, which can meet the requirements of high data transmission volume and low latency of the system.

[0029] The NFC working mode is divided into a passive mode and an active mode. In the passive mode, the NFC initiating device (also called the master device) needs a power supply device. The master device uses the energy of the power supply device to provide a radio frequency field and sends data to the NFC target device (also called the slave device). The transmission rate needs to be selected from one of 106 kbps, 212 kbps, or 424 kbps. The slave device does not generate a radio frequency field, so it does not need a power supply device. Instead, it uses the radio frequency field generated by the master device to convert it into electrical energy to power the circuit of the slave device, receive the data sent by the master device, and use the load modulation technology to send the data of the slave device back to the master device at the same speed. Because the slave device does not generate a radio frequency field in this working mode but passively receives the radio frequency field generated by the master device, it is called the passive mode. In this mode, the NFC master device can detect a contactless card or an NFC target device and establish a connection with it.

[0030] In the active mode, when the initiating device and the target device send data to each other, they must both actively generate a radio frequency field, so it is called the active mode. They both need a power supply device to provide the energy for generating the radio frequency field. This communication mode is the standard mode for peer-to-peer network communication and can obtain a very fast connection rate.

[0031] In an embodiment of the present invention, the tourist terminal 120 can have two modes, one is the passive mode and the other is the active mode.

[0032] In the passive mode, the tourist terminal 120 is further configured to obtain energy from the RF field of the tour guide terminal 110 and receive the pairing request information after obtaining the energy; The tourist terminal 120 is further configured to send feedback information of the first wireless mode to the tour guide terminal 110 according to the pairing request information of the first wireless mode, where the feedback information includes the tourist terminal device identifier as the tourist terminal MAC address.

[0033] Specifically, the tourist terminal 120 is built with an NFC module. When the tourist brings their device close to the tour guide terminal 110 (≤10 cm, the effective distance of NFC), the NFC module of the tourist terminal is automatically awakened. After the NFC module of the tourist terminal senses the RF field of the tour guide terminal, it is activated without manual operation by the tourist. The tourist terminal 120 feeds back the tourist terminal device identifier and its own MAC address or unique number. For example, each tourist terminal 120 also has a number. The tour guide terminal 110 can record the numbers of the tourist terminals 120 paired with it, which is more convenient and faster in device management and inspection; After receiving the feedback, the tour guide terminal 110 performs identity binding, associates the tourist terminal MAC address with the tour guide terminal MAC address, and generates a pairing list. The pairing list includes the feedback information of all tourist terminals 120 and can correspond to each tourist terminal device; then a protocol switching instruction is sent, and a connection instruction (Bluetooth pairing code) of the second wireless mode is sent to the tourist terminal 120 through NFC for Bluetooth pairing connection between the two; The tourist terminal 120 parses the tour guide terminal MAC address, Bluetooth MAC address, pairing key, and the second Bluetooth protocol configuration from the RF field and verifies the protocol compatibility (Bluetooth 5.0). After detecting the Bluetooth configuration parameters, the Bluetooth function is automatically awakened and the pairing mode is entered. The tourist terminal 120 directly calls the Bluetooth MAC address and pairing key transmitted by NFC and automatically sends a connection request to the tour guide terminal. The tour guide terminal compares the received pairing key with the key broadcast by NFC to verify the consistency. Both parties complete the service layer protocol binding based on the pre-exchanged Bluetooth protocol parameters (such as A2DP) and establish a Bluetooth communication link. The tourist terminal does not need to manually search for Bluetooth devices and enter passwords. The entire process is triggered by NFC to automate the process, improving the user experience. Moreover, the pre-exchanged Bluetooth protocol parameters (such as A2DP encoding and decoding formats) avoid the time-consuming link of traditional Bluetooth negotiation, reduce the first connection delay, and improve the connection efficiency.

[0034] After successful pairing, both parties automatically switch to the high-bandwidth mode based on the pre-exchanged protocol parameters (such as Bluetooth), that is, the Bluetooth mode is automatically connected. The tour guide terminal and the tourist terminal complete mutual identity recognition through secure simple pairing (SSP) to ensure that the connected device is a legal terminal paired by NFC; NFC short-range communication ensures the prevention of key leakage, and combined with the dynamic key and whitelist mechanism, improves security and privacy.

[0035] During the authentication process, the encryption algorithm (such as AES-256) transmitted by NFC is reused to generate a session key to encrypt the subsequent audio data stream. The tour guide terminal 110 transmits the audio to the paired tourist terminals 120 through multicast / broadcast. The tourist terminal only receives the audio stream that matches its own MAC address to ensure privacy.

[0036] In addition, in some embodiments, the tour guide terminal 110 sends a connection confirmation signal to the tourist terminal 120, and the tourist terminal returns a response to complete the two-way link confirmation. If no response is received within the timeout period (such as 3 seconds), the tour guide terminal automatically releases the connection resources of the tourist terminal. There is also timeout control. If the tourist terminal 120 fails to complete the second wireless mode connection within the set time (such as 5 seconds), the temporary pairing record is automatically cleared, that is, the tourist still needs to manually confirm during the connection to avoid accidental connection due to accidental touch.

[0037] When multiple tourist terminals 120 are connected, the tourist terminals 120 need to approach the tour guide terminal 110 in sequence. The NFC point-to-point feature ensures that only a single device is processed each time. In addition, it also has a dynamic list management function. For example, the tour guide terminal 110 maintains a dynamic pairing list, which is updated in real time when a new device is added and automatically removed when a device leaves the team (signal loss timeout) to ensure sufficient storage space. On this basis, the connection address and protocol parameters of the second wireless mode are also retained. In this way, when the tourist reconnects for the second time or after disconnection and then reconnects, there is no need to approach the tour guide terminal 110 point-to-point for identification. As long as the tourist terminal 120 is within the signal range and switches to the Bluetooth broadcast mode, it can automatically identify and join the broadcast signal of the tour guide terminal 110, saving time and effort. After the tour guide terminal binds the tourist terminals in batches through NFC, it uses a Bluetooth piconet or scatternet to support concurrent connection of a large number of devices, broadcasts the audio stream to the connected tourist terminals through the audio gateway mode (AG), and supports multi-device synchronization to improve the efficiency of multi-device management.

[0038] In the active mode, the tourist terminal 120 is further configured to send a tourist terminal radio frequency field, and the feedback information is generated in the tourist terminal radio frequency field, where the feedback information includes the tourist terminal device identifier as the tourist terminal MAC address, and the coverage range of the tourist terminal radio frequency field is less than the preset threshold.

[0039] In these two modes, in the passive tourist terminal 120, the tourist terminal 120 can obtain energy from the tour guide terminal 110 radio frequency field and may not be equipped with a power supply or be equipped with a power supply with a lower capacity. In the active tourist terminal 120, the tourist terminal 120 can send a tourist terminal 120 radio frequency field, forming a standard mode of peer-to-peer network communication with the tour guide terminal 110, and can obtain a very fast connection rate.

[0040] In this embodiment, the tourist terminal only needs to be close to the tour guide terminal to complete the full - process pairing. The tourist terminal does not need to manually search for Bluetooth devices or input passwords. The entire process is triggered by NFC to automate the process, improving the user experience. After the NFC transmission protocol parameters are paired more conveniently and accurately, a high - bandwidth Bluetooth mode is established to directly reuse the pre - configured parameters for audio transmission, reducing the connection delay.

[0041] Figure 2 The following is a schematic diagram of the tour guide cap according to the embodiment of the present invention, as Figure 2 shown, the system further includes a tour guide cap 200, the tour guide cap 200 includes a cap band 210 and a brim 220, and the tour guide terminal is disposed on the cap band 210 of the tour guide cap. That is, both the NFC module and the Bluetooth module of the tour guide terminal are disposed on the tour guide cap. Specifically, the NFC module is an NFC chip, and the Bluetooth module is a Bluetooth chip, and both are disposed on the cap band 210.

[0042] In the embodiment of the present invention, the system further includes a tourist cap, and the tourist cap has the same structure as the tour guide cap. The tourist terminal is disposed on the cap band 210 of the tourist cap. That is, both the NFC module and the Bluetooth module of the tourist terminal are disposed on the tourist cap. Specifically, the NFC module is an NFC chip, and the Bluetooth module is a Bluetooth chip, and both are disposed on the cap band 210.

[0043] The system further includes a main control circuit board disposed on the cap band 210. The NFC chip and the Bluetooth chip are both connected to the main control circuit board. The cap band 210 further includes a microphone 230, and the microphone 230 is electrically connected to the main control circuit board. The microphone 230 is used to receive the explanation voice and convert the explanation voice into the audio signal. When on the tour guide terminal, the audio signal is wirelessly transmitted to the Bluetooth chip of the tourist terminal through the Bluetooth chip, and the tourist cap is provided with a speaker to amplify the audio signal and play it for the tourists to listen to.

[0044] The Bluetooth mode in the second wireless mode has classic Bluetooth and broadcast Bluetooth. When the tourist cap and the tour guide cap are wirelessly Bluetooth - connected, the audio explanation is carried out through Bluetooth broadcast. Tourists can listen to the explanation audio from the tour guide of their own group. The audio transmission is stable and safe, and no large noise will be generated, improving the scenic - spot tour experience.

[0045] Moreover, as Figure 3 shown, when the connection between the tourist and the tour guide is disconnected, the tourist cap and the tour guide cap can also be wirelessly connected to their own mobile devices such as mobile phone terminals through the Bluetooth mode and act as wireless earphones. In the embodiment of the present invention, both the tour guide cap and the tourist cap can receive music signals from the mobile phone terminal through classic Bluetooth in the Bluetooth mode to listen to songs, and be connected to the mobile phone terminal to make and answer calls.

[0046] It can be freely switched between two Bluetooth modes. Taking the tourist cap as an example, there is a switching switch on the tourist cap. When the tourist cap disconnects the broadcast connection with the tour guide cap, that is, the tourist cap does not receive the audio signal transmitted from the tour guide cap, the tourist cap switches to the classic Bluetooth mode and connects to its own mobile phone. In this way, the mobile phone can play music and transmit it to the tourist cap through wireless Bluetooth, and the speaker of the tourist cap can play it for the tourists to listen to; when answering a call in the classic Bluetooth mode, the phone audio is also wirelessly transmitted from the mobile phone to the tourist cap for the tourists to listen to. In addition, the microphone on the tourist cap can collect the voices of the tourists and transmit them to the mobile phone side to achieve telephone communication.

[0047] It should be noted that the two Bluetooth modes are independent of each other, that is, when switching to one mode, the other mode will be automatically disconnected.

[0048] In order to improve the audio pickup effect and audio playback effect, especially in the scenario where there are many people in the scenic area and there is a lot of external noise, referring to Figure 5 As shown, in the embodiment of the present invention, the microphones provided on the tour guide side and the tourist side can use microphones with good noise reduction effects, and a dual-MIC noise reduction design can also be built in. The microphone 230 can include a main microphone 410 and a secondary microphone 420, and the distance between the main microphone 410 and the secondary microphone 420 can be 20 - 30 mm. The main microphone 410 and the secondary microphone 420 should be on the same line as the user's mouth, which can be referred to as shown by the yellow arrowed straight line in Figure 5 . The opening of the main microphone 410, that is, the sound pickup port, can be at the lower side position, which is convenient for picking up the voice of the speaker. The opening of the secondary microphone 420 is placed on the surface position to pick up the surrounding environmental sounds, so it is away from the mouth position to avoid interference.

[0049] As Figure 2 shown, the system further includes: A tour guide side antenna 240, which is provided on the brim 220 of the tour guide cap 200; A tour guide side wire 250, which is arranged along the edge of the brim 220 of the tour guide cap 200; Among them, the tour guide side antenna 240 is connected to the tour guide side through the tour guide side wire 250.

[0050] In the embodiment of the present invention, the NFC chip module, the Bluetooth chip module, the buttons, the speaker microphone, etc. are all integrated on the main control circuit board. The main control circuit board is arranged above the ear, and the antenna is arranged at the edge of the brim. It can be as far away from the main control circuit board as possible to avoid signal interference, and the antenna arranged at the edge of the brim in such an extended position can better achieve signal reception and transmission.

[0051] In the embodiment of the present invention, a signal amplifier is also provided inside the tour guide side, which can amplify the audio signal transmitted from the tour guide side to facilitate the reception of the tourist side.

[0052] In other embodiments, headphones can also be directly set on the tourist terminal, or a headphone jack can be set, enabling users to directly use headphones or connect external headphones, so that they can directly listen to the audio signals transmitted by the tour guide terminal through the headphones, avoiding environmental interference and reducing environmental noise at the same time.

[0053] The headphones of the tour guide terminal support the function of connecting an external microphone through a TYPE-C charging port, that is, the headphone jack can access both headphones and a microphone at the same time. In the embodiments of the present invention, the tour guide terminal can explain the voice through an external microphone, convert the explained voice into the audio signal, and send it to the tourist terminal, so that the tour guide can explain to the tourists. In a particularly noisy environment, sound can be picked up in this way, and the sound pickup effect is good.

[0054] In the embodiments of the present invention, the system includes a tour guide hat and a tourist hat. The tour guide hat and the tourist hat can be Figure 2 in the form shown, or in the form of other hats for daily use, such as hats including a hat top. The specific form will not be elaborated here.

[0055] The tour guide terminal and other components such as an antenna are set on the tour guide hat, and the tourist terminal is set on the tourist hat, enabling users not to need to equip additional devices when using, improving the user experience and reducing the use cost.

[0056] In the embodiments of the present invention, the tour guide terminal is also used to connect to the mobile phone terminal through the classic Bluetooth mode, receive music signals from the mobile phone terminal, and / or connect to the mobile phone terminal to make a call; The tourist terminal is also used to connect to the mobile phone terminal through the classic Bluetooth mode, receive music signals from the mobile phone terminal, and / or connect to the mobile phone terminal to make a call.

[0057] After establishing a pairing in the first wireless mode, it can be switched to the second wireless mode. In the second wireless mode, that is, in the classic Bluetooth mode, during leisure time, both the tour guide terminal and the tourist terminal can be connected to the mobile phone, so that they can receive the music played by the mobile phone or make a call through the mobile phone.

[0058] In the embodiments of the present invention, in the case of successful first pairing, if switching from the second wireless mode to the first wireless mode, due to the characteristics that the first wireless mode can record relevant addresses and parameters, when pairing again, it can be automatically paired and connected without contact again. It can meet the requirements of high security, high data transmission volume and low latency at the same time.

[0059] In the embodiments of the present invention, multiple buttons can be set on the tour guide hat and the tourist hat, such as a power on / off button, a broadcast networking button, a volume up button, a volume down button, etc.

[0060] The power button can be used to start the corresponding tour guide hat and tourist hat to work. When not in use, the circuits, controllers, etc. set on the corresponding tour guide hat and tourist hat can be turned off to save energy and extend the service life of the device.

[0061] The broadcast networking button can enable the tour guide hat and the tourist hat to be networked after powering on, that is, turning on or off the NFC mode or Bluetooth mode, or it can allow the user to actively confirm whether to network after the networking is successful, to avoid networking errors caused by multiple systems in the environment.

[0062] The volume up button and volume down button can meet the different needs of users. For example, some elderly users have slightly poor hearing and may need to adjust the volume to a higher level.

[0063] In the embodiment of the present invention, it is possible to support adjusting the volume by using the volume up button and the volume down button when receiving a voice signal, playing music, or answering a call, thereby meeting different needs of users in different application scenarios.

[0064] The tour guide hat and tourist hat can adopt a dual battery layout design on the left and right sides, with two batteries designed in parallel, and the total battery capacity is not less than 500mAh.

[0065] In the embodiment of the present invention, the batteries configured in the tour guide hat and the tourist hat can also be rechargeable batteries, and a solar circuit board or a charging interface can be configured to charge the rechargeable batteries.

[0066] The solar circuit board can be set on the brim of the hat. If a flexible solar circuit board is used, it can also be set on the top of the hat. Solar charging can support 2W charging power in strong light mode.

[0067] The charging interface can be a commonly used TYPE-C interface, or a USB interface, etc.

[0068] In the embodiment of the present invention, a charging interface and a solar charging panel may be provided.

[0069] Figure 4 FIG. 1 is a flow chart of a wireless teaching method according to an embodiment of the present invention. Figure 4 As shown, the method includes: Step 310: The tour guide sends a pairing request message through the first wireless mode, wherein the pairing request message at least includes a device identifier of the tour guide and communication protocol parameters; Step 320: When the tourist terminal detects that the distance to the tour guide terminal is less than a preset threshold, the tourist terminal sends feedback information to the tour guide terminal in response to the pairing request information, and the feedback information includes the tourist terminal device identifier; Step 330: The tour guide terminal establishes a pairing relationship with the tourist terminal based on the feedback information, and can transmit audio signals to the tourist terminal through a second wireless mode after successful pairing.

[0070] Wherein, the first wireless mode is different from the second wireless mode. The first wireless mode is a near-field communication mode, and the second wireless mode is a high-bandwidth mode.

[0071] In an embodiment of the present invention, the first wireless mode is an NFC mode. In step 310, the tour guide terminal sends a pairing request message through the first wireless mode, including: The tour guide terminal sends a tour guide terminal radio frequency field, and the pairing request message is generated in the tour guide terminal radio frequency field; Wherein, the tour guide terminal device identifier in the pairing request message is the tour guide terminal MAC address, and the communication protocol parameters in the pairing request message are NFC communication protocol parameters and second wireless mode protocol parameters.

[0072] In an embodiment of the present invention, in step 320, when the tourist terminal detects that the distance from the tour guide terminal is less than a preset threshold, it sends feedback information to the tour guide terminal in response to the pairing request message, including: The tourist terminal obtains energy from the tour guide terminal radio frequency field, and receives the pairing request message after obtaining the energy; The tourist terminal sends feedback information of the first wireless mode to the tour guide terminal according to the pairing request message of the first wireless mode; Wherein, the feedback information includes that the tourist terminal device identifier is the tourist terminal MAC address.

[0073] In an embodiment of the present invention, in step 320, when the tourist terminal detects that the distance from the tour guide terminal is less than a preset threshold, it sends feedback information to the tour guide terminal in response to the pairing request message, including: The tourist terminal sends a tourist terminal radio frequency field, and the feedback information is generated in the tourist terminal radio frequency field; Wherein, the feedback information includes that the tourist terminal device identifier is the tourist terminal MAC address, and the coverage range of the tourist terminal radio frequency field is less than the preset threshold.

[0074] Therefore, the embodiment of the present invention can simultaneously meet the requirements of high security, high data transmission volume, and low latency.

[0075] In an embodiment of the present invention, the wireless interpretation method includes: Step 510: The tour guide terminal and the tourist terminal are in a shutdown state and are powered on after being long-pressed for 3 seconds.

[0076] Step 520: The tour guide device and the tourist device enter the pairing state. If the pairing is successful, proceed to step 530; if the pairing is unsuccessful, proceed to step 560.

[0077] Step 530: The tourist device receives the voice signal from the tour guide device. Proceed to step 540 or step 550.

[0078] Step 540: The tour guide device and the tourist device short-press the power-on button to play and pause music. Proceed to step 580.

[0079] Step 550: When there is an incoming call, the tour guide device and the tourist device short-press the power-on button once to answer the call; long-press to reject the call; short-press once during the call to end the call. Proceed to step 580.

[0080] Step 560: The pairing time is 5 minutes. After the timeout, exit the pairing mode.

[0081] Step 570: If the tourist device is not connected to a Bluetooth device for 20 minutes, it will automatically shut down.

[0082] Step 580: Long-press for 3 seconds to shut down.

[0083] Step 590: In the shutdown mode, continuously long-press the power-on button for 15 seconds to clear the Bluetooth pairing record and enter the factory reset mode.

[0084] An embodiment of the present invention also discloses a tour guide cap that applies the method described above.

[0085] In an embodiment of the present invention, the wireless interpretation method is applied to a tour guide cap and includes: Step 610: Long-press the networking key for 3 seconds to turn on the tour guide device broadcast transmission mode.

[0086] Step 620: In the tour guide broadcast mode, short-press the networking key to mute and disable the tour guide earphone broadcast microphone.

[0087] Step 630: Long-press the networking key for 3 seconds to turn off the tour guide broadcast transmission mode.

[0088] An embodiment of the present invention also discloses a tourist cap that applies the method described above.

[0089] In an embodiment of the present invention, the wireless interpretation method is applied to a tourist cap and includes: Step 710: When the tourist cap and the tour guide cap are within a straight-line distance of 5 meters, the tourist cap long-presses for 3 seconds to turn on the tour guide broadcast reception mode.

[0090] Step 720: After the tourist cap successfully receives the signal, it will broadcast the number transmitted by the tour guide device and the voice of the tour guide device.

[0091] Step 730, during the listening process, briefly pressing the networking button can query the guide terminal number that is listened to again for rebroadcasting, and the tourist terminal can confirm whether it has received the voice of its corresponding guide terminal.

[0092] Step 740, if the tourist terminal receives the broadcast content of a non-target guide terminal, it can turn off the broadcast reception mode, then bring the tourist terminal close to the target guide terminal and then turn on the broadcast reception mode again to re-receive the broadcast signal of the guide terminal.

[0093] In the embodiments of the present invention, each guide terminal has an independent number, and the numbers between different guide terminals are not repeated. If a guide terminal is damaged or a new guide terminal is added, it may be necessary to reassign a new number to the newly added guide terminal, or the manufacturer can provide a guide terminal with the same number through re-customization.

[0094] The embodiments of the present invention can simultaneously meet the requirements of high security, high data transmission volume, and low latency.

[0095] The embodiments of the present invention may further include a wireless interpretation management system, which includes multiple guide terminals and multiple tourist terminals.

[0096] This management system can be used to monitor the power-on and power-off status of multiple guide terminals and tourist terminals, can also monitor the geographical locations of multiple guide terminals and tourist terminals, and can also monitor the power of the guide terminals and tourist terminals, so as to overall master the information of users, facilitate the management of users, improve the safety guarantee ability in the scenic area, and is of great significance for large-scale scenic areas mainly composed of natural landscapes.

[0097] To be compatible with this management system, the tourist terminal and the guide terminal can be configured with corresponding communication modules, which can report the power-on and power-off status, power status, and location information of the tourist terminal and the guide terminal in real time or periodically. It can also give early warnings according to the power status and location information of the guide terminal and the tourist terminal. For example, some natural scenic areas are large, and some areas may not be open to tourists for a period of time due to weather reasons, architectural reasons, etc. Through the location monitoring of the tourist terminal and the guide terminal, early warnings can be given.

[0098] Figure 4 It is a schematic flowchart of a wireless interpretation method in an embodiment. It should be understood that although Figure 4 the steps in the flowchart are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, Figure 4At least a part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed and completed at the same moment, but can be executed at different moments. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or sub-steps or stages of other steps.

[0099] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database or other medium used in the embodiments provided by the present invention can include non-volatile and / or volatile memories. Non-volatile memories can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memories can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0100] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the said element.

[0101] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A wireless explanation system, characterized in that: The system comprises: The tour guide terminal is configured to send a pairing request message through a first wireless mode, wherein the pairing request message at least includes a device identifier of the tour guide terminal and a communication protocol parameter; The tourist terminal is configured to send feedback information to the tour guide terminal in response to the pairing request information when detecting that the distance to the tour guide terminal is less than a preset threshold, wherein the feedback information includes a device identifier of the tourist terminal; The tour guide terminal is also configured to establish a pairing relationship with the tourist terminal based on the feedback information, and after the pairing is successful, can transmit audio signals with the tourist terminal through the second wireless mode; The first wireless mode is different from the second wireless mode, the first wireless mode is a near field communication mode, and the second wireless mode is a high bandwidth mode.

2. The system according to claim 1, characterized in that The first wireless mode is the NFC mode, and the tour guide terminal is further used for: Sending a tour guide end radio frequency field, wherein the tour guide end radio frequency field generates the pairing request information; The tour guide device identifier in the pairing request information is the tour guide MAC address, and the communication protocol parameters in the pairing request information are NFC communication protocol parameters and second wireless mode communication protocol parameters.

3. The system according to claim 2, characterized in that The visitor terminal is also used for: Acquire energy from the radio frequency field of the tour guide terminal, and receive the pairing request information after acquiring the energy; The tourist terminal is also used to send feedback information of the first wireless mode to the tour guide terminal according to the pairing request information of the first wireless mode; The feedback information includes the visitor terminal device identifier as the visitor terminal MAC address.

4. The system according to claim 1, characterized in that The visitor terminal is also used for: Sending a visitor-side radio frequency field, wherein the visitor-side radio frequency field generates the feedback information; The feedback information includes that the visitor terminal device identifier is the visitor terminal MAC address, and the coverage range of the visitor terminal radio frequency field is less than the preset threshold.

5. The system according to claim 1, characterized in that The system also includes a tour guide hat and a tourist hat, wherein the tour guide end is arranged on the hat ring of the tour guide hat, and the tourist end is arranged on the hat ring of the tourist hat.

6. The system according to claim 5, characterized in that The system also includes a microphone, which is arranged on the hat ring of the tour guide hat and is electrically connected to the tour guide end. The microphone is used to collect the explanation voice and convert the explanation voice into the audio signal.

7. The system according to claim 5, characterized in that The system further comprises: A tour guide end antenna is arranged on the brim of the tour guide hat; A guide end wire is arranged along the brim of the guide hat; Wherein, the tour guide end antenna is connected to the tour guide end through the tour guide end wire.

8. The system according to claim 1, characterized in that The tour guide terminal is also used to connect to the mobile phone terminal through the second wireless mode to receive music signals from the mobile phone terminal, and / or connect to the mobile phone terminal to make a call; The visitor terminal is also used to connect to the mobile terminal via the second wireless mode to receive music signals from the mobile terminal, and / or to connect to the mobile terminal to make a call.

9. A wireless teaching method, characterized in that: The method comprises: The tour guide terminal sends a pairing request message through the first wireless mode, wherein the pairing request message at least includes a device identifier of the tour guide terminal and a communication protocol parameter; When the tourist terminal detects that the distance to the tour guide terminal is less than a preset threshold, the tourist terminal sends feedback information to the tour guide terminal in response to the pairing request information, and the feedback information includes the tourist terminal device identifier; The tour guide terminal establishes a pairing relationship with the tourist terminal based on the feedback information, and after the pairing is successful, can transmit audio signals with the tourist terminal through the second wireless mode; The first wireless mode is different from the second wireless mode, the first wireless mode is a near field communication mode, and the second wireless mode is a high bandwidth mode.

10. The method according to claim 9, characterized in that The first wireless mode is the NFC mode, and the tour guide terminal sends the pairing request information through the first wireless mode, including: The tour guide terminal sends a tour guide terminal radio frequency field, and the tour guide terminal radio frequency field generates the pairing request information; The tour guide device identifier in the pairing request information is the tour guide MAC address, and the communication protocol parameters in the pairing request information are NFC communication protocol parameters and second wireless mode communication protocol parameters.

Images