Bluetooth communication module and Bluetooth communication method
By triggering the Bluetooth module's state switch through the NFC module, the contradiction between power consumption and fast response in the Bluetooth communication module is resolved, achieving a balance between low power consumption and fast response, and improving Bluetooth connection efficiency and real-time performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGXI XINGTAI TECH INC
- Filing Date
- 2026-04-09
- Publication Date
- 2026-06-26
AI Technical Summary
Existing Bluetooth communication modules cannot balance power consumption and fast response, especially in applications with high real-time requirements. In existing technologies, there is a contradiction between power consumption and response speed in different states of Bluetooth communication modules.
The Bluetooth module's state switching is triggered by the NFC module. The NFC module is connected to the control module by electrical signals to control the Bluetooth module to switch between low power consumption and high-speed response states. This includes managing the Bluetooth module's power supply via a power switch and switching between fast broadcast mode and slow broadcast mode to balance power consumption and response speed.
It achieves low power consumption during non-communication periods and fast response during communication periods, improving Bluetooth connection efficiency and real-time performance, while reducing power consumption during unnecessary periods.
Smart Images
Figure CN122294084A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of wireless communication technology, specifically relating to Bluetooth communication modules and Bluetooth communication methods. This application uses NFC triggering to control the state of the Bluetooth communication module, which solves the problem of excessively long Bluetooth communication polling wait times, enabling rapid Bluetooth communication startup and connection. Background Technology
[0002] Bluetooth communication is widely used in short-range wireless communication. When various electronic devices require short-range wireless communication, Bluetooth becomes the most basic choice. For point-to-point or small-scale wireless communication between a few terminals, the existing Bluetooth communication protocols and methods are suitable.
[0003] However, the communication time interval and power consumption of the Bluetooth communication module vary in different states. How to balance the power consumption of the Bluetooth communication module with the fast response when establishing communication is the technical problem to be solved in this application.
[0004] Definitions: MCU is an abbreviation for "Microcontroller Unit".
[0005] BLE is an abbreviation for "Bluetooth Low Energy".
[0006] NFC is an abbreviation for "Near Field Communication," which refers to short-range wireless communication. This includes short-range wireless communication based on RFID technology. Summary of the Invention
[0007] The technical problem to be solved by the present invention is to avoid the problem that the Bluetooth communication module in the prior art cannot take into account both the power consumption of the Bluetooth communication module and the fast response when establishing communication. Instead, it provides a Bluetooth communication module and Bluetooth communication method that switches between low power consumption and high-speed response state through NFC triggering, which can take into account both the power consumption of the Bluetooth communication module and the fast response when establishing communication.
[0008] The technical solution of this application to solve the above-mentioned technical problems is a Bluetooth communication module, including an NFC module, a control module, and a Bluetooth module; the NFC module and the control module are electrically connected; the Bluetooth module and the control module are electrically connected; after the NFC module receives a contact signal from an external NFC device, it sends an A1 electrical signal to the control module; upon receiving the A1 electrical signal, the control module switches the working mode of the Bluetooth module from working state B1 to working state B2.
[0009] It may also include a power supply switch; the power supply switch is electrically connected to the control module; the power supply switch is electrically connected to the Bluetooth module, and the power supply switch is used to turn the power supply of the Bluetooth module on or off; the above B1 working state is the power off state, in the B1 working state, the above control module controls the above power supply switch to cut off the working power of the Bluetooth module; the above B2 working state is the power on state, in the B2 working state, the above control module controls the above power supply switch to turn on the working power of the Bluetooth module.
[0010] It is possible that, in the B1 operating state described above, Bluetooth operates in slow broadcast mode or in a broadcast-off state; in the B2 operating state described above, Bluetooth operates in fast broadcast mode.
[0011] It is possible that the control module receives the A1 electrical signal and switches the Bluetooth module's operating mode from B1 operating state to B2 operating state fast broadcast mode; after entering fast broadcast mode for more than a set time T1, it enters B2 operating state slow broadcast mode.
[0012] It is possible that the above-mentioned duration T1 is greater than 10 seconds.
[0013] Alternatively, within the aforementioned set time T1, the Bluetooth module receives a Bluetooth data transmission request from an external device, enters data transmission mode, and after completing the data transmission, enters slow broadcast mode.
[0014] This could be the slow broadcast mode described above, where the device's broadcast interval is set to be greater than 2 seconds; Yes, it can be the fast broadcast mode described above, where the device's broadcast interval is set to less than 50ms.
[0015] The technical solution of this application to solve the above-mentioned technical problems can also be a Bluetooth communication method, in which Bluetooth includes a B1 working state and a B2 working state; after receiving information provided by an external NFC device, the Bluetooth working mode is switched from the B1 working state to the B2 working state.
[0016] It is possible that, in the B1 operating state described above, Bluetooth operates in slow broadcast mode or broadcast off state; in the B2 operating state described above, Bluetooth operates in fast broadcast mode.
[0017] Alternatively, upon receiving information from an external NFC device, the Bluetooth operating mode can be switched from B1 to the fast broadcast mode in B2; after exceeding a set duration T1 in the fast broadcast mode of B2, the Bluetooth module can enter the slow broadcast mode of B2; the set duration T1 is greater than 10 seconds; within the set duration T1, if the Bluetooth module receives a Bluetooth data transmission request from the external device, the Bluetooth module enters the data transmission mode, and after completing the data transmission, the Bluetooth module enters the slow broadcast mode; in the slow broadcast mode, the device's broadcast interval is set to be greater than 2 seconds; in the fast broadcast mode, the device's broadcast interval is set to be less than 50ms.
[0018] One of the beneficial effects of the technical solution in this application is that by using the NFC module to manage the switching between Bluetooth Low Energy mode and normal operating mode, the power consumption of the Bluetooth communication module and the issue of fast response during communication establishment can be balanced. This achieves both fast response and low power consumption during non-communication periods.
[0019] One of the beneficial effects of the technical solution in this application is that the power switch performs Bluetooth power management, and the Bluetooth power can be directly turned off during non-communication periods, further reducing power consumption.
[0020] One of the beneficial effects of the technical solution in this application is that it can switch between slow broadcast mode or broadcast-off state and fast broadcast mode, which can ensure the real-time response.
[0021] One of the beneficial effects of the technical solution in this application is that after the fast broadcast mode exceeds the set time T1, it enters the slow broadcast mode of the B2 working state. After the necessary communication is completed, it immediately enters the low power consumption state, which can improve system efficiency.
[0022] One of the beneficial effects of the technical solution in this application is that setting the duration T1 to be greater than 10 seconds can ensure that unnecessary waiting time is not too long, thereby reducing system power consumption.
[0023] One of the beneficial effects of the technical solution in this application is that the Bluetooth communication method makes up for the shortcomings of Bluetooth communication by using the near field communication of the NFC module. The combination of the two can improve the fast response during Bluetooth communication, while maintaining the lowest possible power consumption.
[0024] One of the beneficial effects of the technical solution in this application is that after the fast broadcast mode exceeds the set time T1, it enters the slow broadcast mode of the B2 working state. After the necessary communication is completed, it immediately enters the low power consumption state, which can improve system efficiency. Attached Figure Description
[0025] Figure 1 This is one of the schematic block diagrams of a Bluetooth communication module; Figure 2 This is one of the schematic block diagrams of a Bluetooth communication module; Figure 3 This is one of the schematic block diagrams of a Bluetooth communication module; Figure 4 This is a schematic block diagram illustrating the application of a Bluetooth communication module; Figure 5 This is one of the schematic diagrams of the Bluetooth communication method; Figure 6 This is one of the schematic diagrams of the Bluetooth communication method; Figure 7 This is one of the schematic diagrams of the Bluetooth communication method; Figure 8 This is one of the schematic diagrams of the Bluetooth communication method. Detailed Implementation
[0026] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.
[0027] It should be noted that the following description of preferred embodiments of this application does not constitute any limitation on this application. The description of preferred embodiments is merely an illustration of the general principles of this application. The embodiments described in this application are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and technical features numbered with Arabic numerals 1, 2, 3, etc., and designations such as "A" and "B," are used for descriptive purposes only, for ease of explanation, and do not represent a temporal or spatial order; they should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first," "second," and numbered with Arabic numerals 1, 2, 3, etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "several" means two or more, unless otherwise expressly and specifically defined.
[0029] The basic process of Bluetooth Low Energy (BLE) master-slave device connection is a two-way interactive protocol flow, mainly divided into the following four core stages: 1) Broadcast phase: The device acts as a broadcaster, periodically sending broadcast packets on three fixed broadcast channels (37, 38, 39) to actively announce its existence and wait to be scanned or connected.
[0030] 2) Scanning and Connection Requests: The master / central device, acting as the scanner, periodically opens a scanning window to listen for broadcast packets on the same broadcast channel. Once the master device captures a broadcast packet from the target slave device, it will immediately send a connection request on the same broadcast channel if a connection is needed.
[0031] 3) Connection establishment: After the connection is established, both parties immediately switch from the broadcast channel to one of the 37 data channels to synchronize time. The slave device switches from broadcast mode to connection mode and stops broadcasting; the master device begins to periodically send data packets according to the connection interval.
[0032] 4) Data communication: The master device wakes up at the beginning of each connection interval and sends a data packet to the slave device; the slave device must reply within 150μs after receiving the packet, otherwise the connection will be interrupted.
[0033] In actual Bluetooth device connection processes, the broadcast and scanning cycles of the master and slave devices may be staggered, requiring multiple broadcast opportunities (corresponding to multiple broadcast intervals) to ensure that the master device captures the broadcast packet and sends a connection request within the scanning window. In actual Bluetooth communication, a device typically needs to go through 2-3 broadcast intervals before it can be scanned by the master device.
[0034] In situations where real-time requirements are not high, the existing Bluetooth mode switching technology can meet the application needs. However, in situations with high real-time requirements, waiting for 2-3 broadcast intervals will result in excessively long waiting times, affecting usability and user experience.
[0035] To ensure the low power consumption of BLE Bluetooth devices, a longer Bluetooth broadcast interval results in lower power consumption. However, a longer broadcast interval also increases the time required for Bluetooth devices to establish a connection. The problem this invention aims to solve is how to improve Bluetooth connection efficiency while maintaining the low power consumption characteristics of Bluetooth devices.
[0036] The technical solution of this application can balance the power consumption of the Bluetooth communication module and the fast response during communication establishment, improve the real-time performance of communication, and achieve faster connection speed, while maintaining low power consumption during non-essential communication periods.
[0037] like Figures 1 to 2As shown, a Bluetooth communication module includes an NFC module, a control module, and a Bluetooth module; the NFC module is electrically connected to the control module; the Bluetooth module is electrically connected to the control module; after receiving a contact signal from an external NFC device, the NFC module sends an A1 electrical signal to the control module; upon receiving the A1 electrical signal, the control module switches the Bluetooth module's operating mode from B1 to B2.
[0038] like Figures 1 to 3 As shown, a Bluetooth communication module further includes a power switch; the power switch is electrically connected to the control module; the power switch is electrically connected to the Bluetooth module, and the power switch is used to turn the power supply of the Bluetooth module on or off; the B1 working state is the power off state, in which the control module controls the power switch to cut off the working power of the Bluetooth module; the B2 working state is the power on state, in which the control module controls the power switch to turn on the working power of the Bluetooth module.
[0039] like Figure 4 As shown, a Bluetooth communication module is applied to an electronic paper employee badge. The electronic paper employee badge communicates with an external badge reader / writer control device via Bluetooth. The Bluetooth module on the electronic paper employee badge controls its operating mode switching through an NFC module. When the NFC module receives an NFC trigger signal (i.e., a contact signal), it initiates the Bluetooth module's operating mode switch, thereby quickly waking up the Bluetooth module and putting it into a normal communication state, rather than a turned-off or low-power state, thus improving the real-time response capability of communication. Once communication is completed, the Bluetooth module enters a turned-off or low-power state, achieving a balance between power consumption and real-time response capability.
[0040] In some embodiments, in the B1 operating state described above, the Bluetooth operating mode is slow broadcast mode or broadcast off state; in the B2 operating state described above, the Bluetooth operating mode includes fast broadcast mode.
[0041] In some embodiments, upon receiving the A1 electrical signal, the control module switches the Bluetooth module's operating mode from B1 (operating state) to the fast broadcast mode (operating state B2); after exceeding a set duration T1 in the fast broadcast mode, it enters the slow broadcast mode (operating state B2). The set duration T1 is greater than 10 seconds.
[0042] In some embodiments, within the set duration T1, the Bluetooth module receives a Bluetooth data transmission request from an external device, the Bluetooth module enters a data transmission mode, and after completing the data transmission, the Bluetooth module enters a slow broadcast mode.
[0043] In some embodiments, in the above-described slow broadcast mode, the broadcast interval of the device is set to be greater than 2 seconds; In some embodiments, the broadcast interval of the device in the above-described fast broadcast mode is set to less than 50ms.
[0044] like Figure 5 As shown, in one embodiment of a Bluetooth communication method, Bluetooth includes a B1 working state and a B2 working state; upon receiving information from an external NFC device, the Bluetooth working mode is switched from the B1 working state to the B2 working state. The B1 working state is the Bluetooth inactive state, and the B2 working state is the Bluetooth active state.
[0045] like Figure 5 As shown, in one embodiment of a Bluetooth communication method, Bluetooth includes a B1 operating state and a B2 operating state. Upon receiving information from an external NFC device, the Bluetooth operating mode is switched from the B1 operating state to the B2 operating state. In the B1 operating state, Bluetooth operates in slow broadcast mode or broadcast off mode; in the B2 operating state, Bluetooth operates in fast broadcast mode. In other embodiments, Bluetooth operates in a power-off state to further reduce power consumption. Of course, to maintain fast response capabilities, most applications can choose to operate in slow broadcast mode or broadcast off mode.
[0046] like Figure 6 As shown, in one embodiment of a Bluetooth communication method, after receiving information from an external NFC device, the Bluetooth operating mode is switched from working state B1 to the fast broadcast mode in working state B2; after the fast broadcast mode in working state B2 exceeds a set duration T1, it enters the slow broadcast mode in working state B2; the set duration T1 is greater than 10 seconds; within the set duration T1, the Bluetooth module receives a Bluetooth data transmission request from the external device, the Bluetooth module enters the data transmission mode, and after completing the data transmission, the Bluetooth module enters the slow broadcast mode; in the slow broadcast mode, the device's broadcast interval is set to be greater than 2 seconds; in the fast broadcast mode, the device's broadcast interval is set to be less than 50ms.
[0047] T1 can also be greater than 60 seconds; the specific time can be determined based on the specific application requirements. like Figure 7 In this application, the broadcast mode of the Bluetooth device is divided into normal broadcast mode and fast broadcast mode: in normal broadcast mode, the broadcast interval of the device is set to be longer (e.g., 3s) to meet the low power consumption characteristics of the Bluetooth device; in fast broadcast mode, the broadcast interval of the device is set to be shorter (e.g., 100ms) to achieve fast Bluetooth connection.
[0048] In this application, the Bluetooth device is normally in normal broadcast mode. When Bluetooth data transmission is required, the NFC area of the device is touched by the NFC module of the mobile phone. The device's main controller detects the NFC signal and switches the Bluetooth broadcast mode to fast broadcast mode. In fast broadcast mode, the device is quickly scanned by the master device and a connection is established for rapid data transmission. After the data transmission is completed, it returns to normal slow broadcast mode.
[0049] One specific embodiment of this application, such as Figure 7 and Figure 8 As shown, this is a device that improves Bluetooth connection speed based on NFC triggering; the Bluetooth device contains an NFC communication module and a BLE communication module. Once the MCU receives the NFC trigger signal, it notifies the corresponding BLE module to switch to fast broadcast mode.
[0050] like Figure 7 After the device enters fast broadcast mode, it will connect to the master device more quickly during the master device's scanning process. If the connection is successful, it will enter the data transmission process. After the data transmission is completed, the device will return to normal broadcast mode. If the device attempts to connect for more than 1 minute after switching to fast broadcast mode but fails to connect, it will return to normal broadcast mode.
[0051] As shown in the accompanying drawings, the above are merely embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made using the content of the invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.
Claims
1. A Bluetooth communication module, characterized in that, Includes an NFC module, a control module, and a Bluetooth module; The NFC module is electrically connected to the control module; The Bluetooth module and the control module are electrically connected. After receiving a contact signal from an external NFC device, the NFC module sends an A1 electrical signal to the control module. Upon receiving the A1 electrical signal, the control module switches the Bluetooth module's operating mode from B1 to B2.
2. The Bluetooth communication module according to claim 1, characterized in that, It also includes a power switch; The power supply switch is electrically connected to the control module; The power switch is electrically connected to the Bluetooth module and is used to turn the power of the Bluetooth module on or off. The B1 operating state is the power-off state. In the B1 operating state, the control module controls the power supply switch to cut off the Bluetooth module's operating power. The B2 operating state is the power-on state. In the B2 operating state, the control module controls the power supply switch to turn on the Bluetooth module's operating power.
3. The Bluetooth communication module according to claim 1, characterized in that, In the B1 operating state, Bluetooth operates in slow broadcast mode or broadcast off state; In the B2 operating state, Bluetooth operating modes include fast broadcast mode.
4. The Bluetooth communication module according to claim 3, characterized in that, When the control module receives the A1 electrical signal, it switches the Bluetooth module's operating mode from B1 to B2 (fast broadcast mode); after the fast broadcast mode has been in operation for a set duration T1, it switches to B2 (slow broadcast mode).
5. The Bluetooth communication module according to claim 4, characterized in that, The set duration T1 is greater than 10 seconds.
6. The Bluetooth communication module according to claim 4, characterized in that, Within the set duration T1, the Bluetooth module receives a Bluetooth data transmission request from an external device, the Bluetooth module enters data transmission mode, and after completing the data transmission, the Bluetooth module enters slow broadcast mode.
7. The Bluetooth communication module according to claim 3, characterized in that, In the slow broadcast mode, the broadcast interval of the device is set to be greater than 2 seconds; In the fast broadcast mode, the broadcast interval of the device is set to less than 50ms.
8. A Bluetooth communication method, characterized in that, Bluetooth includes B1 working state and B2 working state; Upon receiving information from an external NFC device, the Bluetooth operating mode is switched from B1 to B2.
9. The Bluetooth communication method according to claim 8, In the B1 operating state, Bluetooth operates in slow broadcast mode or broadcast off state. In the B2 operating state, Bluetooth operating modes include fast broadcast mode.
10. The Bluetooth communication method according to claim 9, characterized in that, Upon receiving information from an external NFC device, the Bluetooth module switches its operating mode from B1 to the fast broadcast mode in B2. After the fast broadcast mode in B2 exceeds a set duration T1, it enters the slow broadcast mode in B2. The set duration T1 is greater than 10 seconds. Within the set duration T1, if the Bluetooth module receives a Bluetooth data transmission request from an external device, the Bluetooth module enters the data transmission mode. After completing the data transmission, the Bluetooth module enters the slow broadcast mode. In the slow broadcast mode, the device's broadcast interval is set to be greater than 2 seconds. In the fast broadcast mode, the device's broadcast interval is set to be less than 50ms.