A data transmission system

Abstract

This invention relates to the field of data transmission technology, and in particular to a data transmission system comprising a transmitter and at least one receiver. The transmitter is equipped with a request module and a first Bluetooth module, and the receiver is equipped with a receiving module and a second Bluetooth module. The request module is used to send a matching request signal through the first Bluetooth module; the receiving module is used to receive the matching request signal through the second Bluetooth module and determine the transmission distance of the matching request signal. If the transmission distance is less than a preset distance value, the matching request signal is parsed; the receiver is also used to equip the corresponding identification code of the transmitter on the corresponding working channel of the receiver based on the result of parsing the matching request signal. This invention enables rapid connection between the transmitter and the receiver.

Description

Technical Field

[0001] This invention relates to the field of data transmission technology, and in particular to a data transmission system. Background Technology

[0002] In situations requiring one-to-many audio transmission, such as a tour guide explaining something to all members of a tour group at a scenic spot, or when multiple people need to communicate within a certain space, it is usually necessary to establish a signal connection between the transmitter used by the tour guide and the receivers used by the members to ensure that the tour guide's words can be successfully transmitted to the members' ears. However, the existing methods of connecting transmitters and receivers rely on Bluetooth connections or manual searching for the working channel. This results in users having to operate each receiver individually to connect to the transmitter, a cumbersome and inefficient process. Summary of the Invention

[0003] This invention addresses the problems of the prior art by providing a data transmission system that enables rapid connection between a transmitter and a receiver.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: The present invention provides a data transmission system comprising a transmitter and at least one receiver. The transmitter is equipped with a request module and a first Bluetooth module, and the receiver is equipped with a receive module and a second Bluetooth module. The request module is used to send a match request signal via the first Bluetooth module; The receiving module is used to receive the matching request signal through the second Bluetooth module and determine the transmission distance of the matching request signal. If the transmission distance is less than the preset distance value, the matching request signal is parsed. The receiver is also used to equip the corresponding identification code of the transmitter on the corresponding working channel of the receiver based on the result of parsing the matching request signal.

[0005] Furthermore, the preset distance value is 0-150cm.

[0006] Furthermore, the work performed by the receiving module includes the following steps: S100. Receive a matching request signal; S200. Analyze the signal strength of the matching request signal. If the signal strength is greater than the preset value, it is determined that the transmitter is within the preset distance, and then steps S300-S400 are executed; if the signal strength is less than the preset value, it is determined that the transmitter is not within the preset distance, and then step S500 is executed. S300. Parse the match request signal to obtain the transmitter's operating channel; S400. Sends the working channel to the second Bluetooth module; S500. Do not parse the match request signal.

[0007] Furthermore, the second Bluetooth module is configured with multiple different operating channels, while the first Bluetooth module is configured with a specific operating channel; step S300 also includes: The working channel of the matching request signal is matched with the active working channel in the second Bluetooth module, and it is determined whether the working channel of the matching request signal has been occupied; if so, the matching request signal is rejected, otherwise step S400 is executed.

[0008] Furthermore, the transmitter is equipped with a request button and a first light, both of which are signal-connected to the transmission module; The request button is used to control the transmitter module to send a match request signal, and the first light is used to illuminate during the duration of the match request signal sent by the transmitter module. The receiver is equipped with a second light, which is used to illuminate after the second Bluetooth module successfully pairs with the first Bluetooth module.

[0009] Furthermore, both the first and second lights are multi-color LED lights. When the first lamp lights up, it emits light of the corresponding color based on the remaining power of the transmitter; When the second light is lit, it emits light of the corresponding color based on the remaining battery power of the receiver.

[0010] Furthermore, the transmitter is equipped with a first microphone and a first speaker, and the receiver is equipped with a second microphone and a second speaker; the method for data transmission between the transmitter and the receiver includes the following steps: Y100. Receives audio information using a first microphone and converts it into first audio data, then transmits it to a second Bluetooth module via a first Bluetooth module; the second Bluetooth module receives the first audio data, converts it into audio information via a second speaker, and then plays it. Y200. Receives audio information using a second microphone and converts it into second audio data, then transmits it to a first Bluetooth module via a second Bluetooth module; the first Bluetooth module receives the second audio data, converts it into audio information via a first speaker, and plays it; simultaneously, the first Bluetooth module receives the second audio data and transmits it via the first Bluetooth module so that the second Bluetooth modules of other receivers can receive the second audio data. The execution order of steps Y100 and Y200 is not important.

[0011] Furthermore, the first Bluetooth module and the second Bluetooth module each include a Bluetooth chip with the model number NRF52832-QFAA, and both the first Bluetooth module and the second Bluetooth module store the iBeacon protocol.

[0012] Furthermore, the first Bluetooth module and the second Bluetooth module are also used to send beacon signals to the outside world at a frequency of 3 times per second, which are received and parsed by the external terminal. The beacon signal includes the remaining battery power of the transmitter / receiver and the current operating channel of the transmitter / receiver.

[0013] The beneficial effects of the present invention are as follows: The present invention uses a transmitter to send a matching request signal through a request module. When the receiver receives a matching request signal with a transmission distance that meets the requirements through a receiving module, it directly parses the matching request signal to obtain matching information. As a result, the second Bluetooth module directly matches the corresponding working channel identification code, so that the data sent by the transmitter can be directly received by the second Bluetooth module, thereby improving the matching efficiency between the two. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the transmitter of the present invention.

[0016] Figure 3 This is a schematic block diagram of the receiver of the present invention.

[0017] Figure 4 This is a circuit diagram of the request module of the present invention.

[0018] Figure 5 This is a circuit diagram of the first Bluetooth module of the present invention.

[0019] Reference numerals: 1—Transmitter, 2—Receiver, 3—Request module, 4—First Bluetooth module, 5—Receiver module, 6—Second Bluetooth module, 7—First light, 8—Second light, 9—First microphone, 10—First speaker, 11—Second microphone, 12—Second speaker, 13—Request button. Detailed Implementation

[0020] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention. The present invention will be described in detail below with reference to the accompanying drawings.

[0021] like Figures 1 to 5 As shown, the present invention provides a data transmission system including a transmitter 1 and at least one receiver 2. The transmitter 1 is equipped with a request module 3 and a first Bluetooth module 4, and the receiver 2 is equipped with a receiving module 5 and a second Bluetooth module 6. The request module 3 is used to send a match request signal through the first Bluetooth module 4; specifically, the match request signal is sent at a frequency of 200 times per second at a frequency of 2480 MHz. The receiving module 5 is used to receive the matching request signal through the second Bluetooth module 6 and determine the transmission distance of the matching request signal. If the transmission distance is less than the preset distance value, the matching request signal is parsed. Receiver 2 is also used to equip the corresponding identification code of transmitter 1 on the working channel corresponding to receiver 2 based on the result of parsing the matching request signal.

[0022] In actual operation, the preset distance value is optimally 0-150cm to ensure that the distance between transmitter 1 and receiver 2 is small enough to achieve connection.

[0023] Specifically, the present invention may include more than one receiver 2, for example, referencing Figure 1 As shown, five receivers 2 are stacked in one area. Then, a transmitter 1 is brought close to this area so that the distance between the transmitter 1 and the area is less than a preset distance value (for example, if the preset distance value is 15cm, the distance between the transmitter 1 and the area is about 10cm). Then, a matching request signal (hereinafter referred to as signal A) is sent through the request module 3. In addition to receiving signal A, the receiving module 5 may also receive other matching request signals (hereinafter referred to as signal B) that are farther away. At this time, the receiving module 5 will judge the transmission distance of signal A and signal B. When the judgment result is that signal A is less than the preset distance value and signal B is greater than the preset distance value, the request module 3 will only parse signal A to obtain the working channel and identification code of the transmitter 1, and transmit the matching information to the second Bluetooth module 6. The second Bluetooth module 6 matches the identification code in the corresponding frequency working channel according to the working channel of the transmitter 1, so that the working channel will only receive the data transmitted by the transmitter 1.

[0024] All receivers 2 within the area can simultaneously perform the aforementioned actions to achieve matching. Using this invention, only the transmitter 1 needs to be brought close to the receiver 2 to send a matching request signal; there is no need to operate on each receiver 2 individually. This results in highly efficient matching connections in situations where multiple receivers 2 require matching, significantly improving efficiency. Furthermore, since the operation is performed on the transmitter 1, it effectively avoids the phenomenon of missing some unmatched receivers 2.

[0025] In this invention, although Bluetooth is used, the connection between receiver 2 and transmitter 1 is not achieved through traditional Bluetooth pairing. Instead, they use the Bluetooth module to transmit and receive radio frequency signals, and determine whether data needs to be received and processed based on the identification code in the signal. This method ensures stable signal transmission and reception, and avoids the cumbersome operations required by Bluetooth pairing.

[0026] In this embodiment, the work performed by the receiving module 5 includes the following steps: S100. Receive a matching request signal; S200. Analyze the signal strength of the matching request signal. If the signal strength is greater than the preset value, it is determined that the transmitter 1 is within the preset distance, and then steps S300-S400 are executed; if the signal strength is less than the preset value, it is determined that the transmitter 1 is not within the preset distance, and then step S500 is executed. S300. Parse the match request signal to obtain the operating channel of transmitter 1; S400. Send the working channel to the second Bluetooth module 6; S500. Do not parse the match request signal.

[0027] In reality, the strength of the signal received by receiver 2 depends not only on the strength of the signal transmitted by transmitter 1, but also on the distance between transmitter 1 and receiver 2. For example, a signal of the same strength will be received at a transmission distance of 10cm with a greater strength than at a transmission distance of 20cm.

[0028] Based on the above principle, the transmission distance of the matching request signal in this embodiment is set according to the signal strength. For example, when the matching request signal sent by transmitter 1 is received by receiver 2 at a preset distance value, its signal strength is X. Then, the request module 3 can be set to: if the received matching request signal strength is greater than (X-10%), it proves that the matching signal strength meets the requirements, that is, the distance between transmitter 1 and receiver 2 is within the preset distance value, and the receiving module 5 can then parse the matching request signal.

[0029] The 10% mentioned above is just an example. In reality, this value should be an error range value, that is, taking into account the signal weakening caused by factors such as environmental interference and the power of transmitter 1. This value should be set by actual testing by those skilled in the art.

[0030] Specifically, the second Bluetooth module 6 is configured with multiple different working channels, and the first Bluetooth module 4 is configured with a specific working channel; step S300 further includes: The working channel of the matching request signal is matched with the active working channel in the second Bluetooth module 6. It is determined whether the working channel of the matching request signal has been occupied. If so, the matching request signal is rejected; otherwise, step S400 is executed.

[0031] That is, a receiver 2 can be paired with multiple transmitters 1 with different working channels, similar to the principle of a walkie-talkie. A receiver 2 can simultaneously receive data transmitted by different transmitters 1, thus making the application of receiver 2 more flexible.

[0032] In this embodiment, the receiver 2 has multiple working channels, for example, 78 working channels. Theoretically, the receiver 2 can connect to 78 transmitters 1 with different working channels. However, the transmitter 1 only has one working channel. Therefore, after a successful connection, the transmitter 1 and the receiver 2 will only transmit data through this working channel, and the transmitted data has a corresponding identification code to avoid confusion.

[0033] Specifically, the transmitter 1 is equipped with a request button 13 and a first light 7, both of which are connected to the transmission module for signal transmission. The request button 13 is used to control the transmitter module to transmit a matching request signal, and the first light 7 is used to illuminate during the duration of the transmitter module transmitting the matching request signal; The receiver 2 is equipped with a second light 8, which is used to illuminate after the second Bluetooth module 6 and the first Bluetooth module 4 are successfully paired.

[0034] When the request button 13 is pressed continuously, the transmitting module will continuously transmit a matching request signal to the outside world. At this time, the first light 7 will light up to let the user know that the matching request signal has been successfully sent. When the receiver 2 receives the matching request signal and completes the pairing, the second light 8 will light up to inform the user that the pairing is successful. If the pairing is unsuccessful, the second light 8 will not light up.

[0035] In this embodiment, both the first lamp 7 and the second lamp 8 are multi-color LED lamps. When the first lamp 7 is lit, the first lamp 7 emits light of the corresponding color according to the remaining power of the transmitter 1; When the second lamp 8 is lit, it emits light of the corresponding color according to the remaining power of the receiver 2.

[0036] For example, a low battery level can be defined as below 80%. When the request button 13 is pressed, the first light 7 will illuminate green if the transmitter 1's battery level is not below 80%, and red if the transmitter 1's battery level is below 80%. The illumination pattern of the second light 8 can be the same as that of the first light 7. By using different illumination patterns, the user can know the remaining battery level of the transmitter 1 / receiver 2 in real time, facilitating timely charging of the transmitter 1 / receiver 2.

[0037] In this embodiment, the transmitter 1 is equipped with a first microphone 9 and a first speaker 10, and the receiver 2 is equipped with a second microphone 11 and a second speaker 12; the method for data transmission between the transmitter 1 and the receiver 2 includes the following steps: Y100. Audio information is received using the first microphone 9 and converted into first audio data, which is then transmitted to the second Bluetooth module 6 via the first Bluetooth module 4; the second Bluetooth module 6 receives the first audio data and converts it into audio information via the second speaker 12 before playing it. Y200. Audio information is received using the second microphone 11 and converted into second audio data, which is then transmitted to the first Bluetooth module 4 via the second Bluetooth module 6. After receiving the second audio data, the first Bluetooth module 4 converts it into audio information via the first speaker 10 and plays it. At the same time, after receiving the second audio data, the first Bluetooth module 4 transmits the second audio data through the first Bluetooth module 4 so that the second Bluetooth module 6 of other receivers 2 can receive the second audio data. The execution order of steps Y100 and Y200 is not important.

[0038] Taking a tour guide explaining something to all members of a tour group at a scenic spot as an example, members of the tour group may ask questions on the spot. At this time, in addition to transmitter 1 receiving the audio, other receivers 2 can also receive the audio, so that other members can also know all the information about the member's interaction with the tour guide, thus enhancing the experience.

[0039] To simplify the structure and avoid data transmission errors, only the first Bluetooth module 4 can transmit data with the second Bluetooth module 6, and different second Bluetooth modules 6 on the same working channel cannot transmit data to each other.

[0040] In this embodiment, the first Bluetooth module 4 and the second Bluetooth module 6 each include a Bluetooth chip with model number NRF52832-QFAA, and both the first Bluetooth module 4 and the second Bluetooth module 6 store the iBeacon protocol.

[0041] The iBeacon protocol, introduced by Apple in 2013, is a Bluetooth Low Energy (BLE) based communication protocol. It broadcasts data packets containing UUIDs, Major, Minor, and signal strength reference values ​​to achieve functions such as indoor positioning, near-field sensing, and scene triggering. Its advantage lies in acquiring information without establishing a Bluetooth connection. This embodiment uses this protocol in a one-to-many data transmission scenario, achieving rapid connection and independent channel data transmission, allowing multiple receivers 2 to connect to a single transmitter 1 in less than one minute. Furthermore, this protocol has a longer signal transmission distance than traditional Bluetooth, making it suitable for communication in large team events.

[0042] Based on this protocol, the present invention introduces a fast pairing mechanism: transmitter 1 and receiver 2 need to be within a set distance to successfully pair and transmit information.

[0043] In this embodiment, the first Bluetooth module 4 and the second Bluetooth module 6 are also used to send beacon signals to the outside world at a frequency of 3 times per second, which are received and parsed by the external terminal. The beacon signal includes the remaining battery power of transmitter 1 / receiver 2 and the current operating channel of transmitter 1 / receiver 2.

[0044] Users can utilize external terminals, such as smartphones with a specific app installed. After opening the app and enabling Bluetooth, they can receive beacon signals from transmitter 1 and receiver 2 within a certain range. By receiving and analyzing the beacon signals, users can obtain information such as the operating channel and remaining battery power of transmitter 1 / receiver 2 within that range. Based on the strength of the beacon signals, the distance between the terminal and transmitter 1 / receiver 2 can be determined, thus associating the beacon signals with the corresponding transmitter 1 / receiver 2. This allows users to obtain the status of all transmitters 1 / receivers 2 at once.

[0045] Furthermore, the terminal allows users to delete specific working channels within receiver 2. For example, when displaying the working channel connected to receiver 2, the app can show the name of transmitter 1 corresponding to that working channel. If transmitter 1 is no longer in use due to malfunction or other factors, the user can delete the working channel via the app to prevent receiver 2 from being unable to connect to another transmitter 1 using the same working channel.

[0046] In this embodiment, as Figure 4 and Figure 5 The circuit diagrams shown are those of the request module 3 and the first Bluetooth module 4, respectively. The circuit diagrams of the receiving module 5 and the second Bluetooth module 6 are basically the same as those of the request module 3 and the first Bluetooth module 4. The main difference is the difference in the input program, which falls within the scope of routine adjustments that can be made by those skilled in the art according to actual needs, and will not be described further here.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A data transmission system, comprising a transmitter and at least one receiver, characterized in that, The transmitter is equipped with a request module and a first Bluetooth module, and the receiver is equipped with a receive module and a second Bluetooth module. The request module is used to send a match request signal via the first Bluetooth module; The receiving module is used to receive the matching request signal through the second Bluetooth module and determine the transmission distance of the matching request signal. If the transmission distance is less than the preset distance value, the matching request signal is parsed. The receiver is also used to equip the corresponding identification code of the transmitter on the corresponding working channel of the receiver based on the result of parsing the matching request signal.

2. The data transmission system according to claim 1, characterized in that, The preset distance value is 0-150cm.

3. The data transmission system according to claim 1, characterized in that, The receiving module performs the following steps: S100. Receive a matching request signal; S200. Analyze the signal strength of the matching request signal. If the signal strength is greater than the preset value, it is determined that the transmitter is within the preset distance, and then steps S300-S400 are executed; if the signal strength is less than the preset value, it is determined that the transmitter is not within the preset distance, and then step S500 is executed. S300. Parse the match request signal to obtain the transmitter's operating channel; S400. Sends the working channel to the second Bluetooth module; S500. Do not parse the match request signal.

4. The data transmission system according to claim 3, characterized in that, The second Bluetooth module has multiple different operating channels, and the first Bluetooth module has one specific operating channel; step S300 further includes: The working channel of the matching request signal is matched with the active working channel in the second Bluetooth module, and it is determined whether the working channel of the matching request signal has been occupied; if so, the matching request signal is rejected, otherwise step S400 is executed.

5. The data transmission system according to any one of claims 1-4, characterized in that, The transmitter is equipped with a request button and a first light, both of which are connected to the signal of the transmission module. The request button is used to control the transmitter module to send a match request signal, and the first light is used to illuminate during the duration of the match request signal sent by the transmitter module. The receiver is equipped with a second light, which is used to illuminate after the second Bluetooth module successfully pairs with the first Bluetooth module.

6. The data transmission system according to claim 5, characterized in that, Both the first and second lights are multi-color LED lights. When the first lamp lights up, it emits light of the corresponding color based on the remaining power of the transmitter; When the second light is lit, it emits light of the corresponding color based on the remaining battery power of the receiver.

7. The data transmission system according to claim 1, characterized in that, The transmitter is equipped with a first microphone and a first speaker, and the receiver is equipped with a second microphone and a second speaker; the method for data transmission between the transmitter and the receiver includes the following steps: Y100. Receives audio information using a first microphone and converts it into first audio data, then transmits it to a second Bluetooth module via a first Bluetooth module; the second Bluetooth module receives the first audio data, converts it into audio information via a second speaker, and then plays it. Y200. Receives audio information using a second microphone and converts it into second audio data, then transmits it to a first Bluetooth module via a second Bluetooth module; the first Bluetooth module receives the second audio data, converts it into audio information via a first speaker, and plays it; simultaneously, the first Bluetooth module receives the second audio data and transmits it via the first Bluetooth module so that the second Bluetooth modules of other receivers can receive the second audio data. The execution order of steps Y100 and Y200 is not important.

8. The data transmission system according to claim 1, characterized in that, The first Bluetooth module and the second Bluetooth module each include a Bluetooth chip of model NRF52832-QFAA, and both the first Bluetooth module and the second Bluetooth module store the iBeacon protocol.

9. The data transmission system according to claim 8, characterized in that, The first Bluetooth module and the second Bluetooth module are also used to send beacon signals to the outside world at a frequency of 3 times per second, which are received and parsed by the external terminal. The beacon signal includes the remaining battery power of the transmitter / receiver and the current operating channel of the transmitter / receiver.

Images