A master-slave adaptive multi-channel bluetooth detection device

Abstract

The utility model provides a kind of master-slave adaptive multi-channel bluetooth detection device, the device includes shell, MCU master control unit and the power module, RS232-TTL module and bluetooth test unit connected with it are equipped in shell;The RS232-TTL module is used to complete the bidirectional conversion between TTL level and RS-232 level, and is communicated with MCU master control unit by serial port;The bluetooth test unit is composed of multiple independent bluetooth modules, each bluetooth module is connected with MCU master control unit by serial port, for executing the scanning and communication task on specified bluetooth channel.The utility model's master-slave adaptive multi-channel bluetooth detection device adopts multiple independent bluetooth detection module, and each bluetooth module detection is responsible for the scanning work of one bluetooth channel, greatly improves detection efficiency and signal capture probability.

Description

Technical Field

[0001] This utility model relates to the field of wireless communication technology, and more specifically, to a master-slave adaptive multi-channel Bluetooth detection device. Background Technology

[0002] With the rapid development of IoT technology, the number of Bluetooth devices is growing exponentially, and their applications cover multiple fields such as production testing, warehouse management, on-site maintenance, and security detection. In these scenarios, it is often necessary to quickly identify, locate, and collect the status of multiple Bluetooth devices. However, traditional Bluetooth detection devices typically employ a single-channel design, enabling only one-to-one or sequential scanning, resulting in low detection efficiency and difficulty in meeting the demands of simultaneous detection of large-scale Bluetooth devices. Furthermore, in environments with dense device deployments, traditional detection methods are susceptible to signal interference and collisions, leading to inaccurate results or frequent missed detections. These inefficiencies and insufficient anti-interference capabilities significantly limit the promotion and widespread adoption of Bluetooth detection technology in practical applications.

[0003] Therefore, there is an urgent need for a multi-channel Bluetooth detection device capable of parallel operation to improve the efficiency and reliability of large-scale Bluetooth device detection. Summary of the Invention

[0004] The purpose of this invention is to address the problem that existing Bluetooth testing devices typically employ a single-channel design, and to propose a master-slave adaptive multi-channel Bluetooth testing device. This aims to improve testing efficiency, enhance system reliability and scalability, and meet the demands of efficient batch testing of Bluetooth devices in modern IoT environments.

[0005] The technical solution of this utility model is: This utility model provides a master-slave adaptive multi-channel Bluetooth detection device. The device includes a housing, and inside the housing is a MCU main control unit and a power module, an RS232-TTL module and a Bluetooth test unit connected thereto. The RS232-TTL module is used to perform bidirectional conversion between TTL level and RS-232 level, and communicates with the MCU main control unit through the serial port; The Bluetooth test unit consists of multiple independent Bluetooth modules. Each Bluetooth module is connected to the MCU main control unit via a serial port and is used to perform scanning and communication tasks on a specified Bluetooth channel.

[0006] Furthermore, the power module includes a DC-DC regulated power supply and an LDO regulated power supply. The DC-DC regulated power supply is used to step down the externally input 12V DC power supply to 5V to provide the main power supply for the system. The LDO regulated power supply converts the 5V power supply to 3.3V to power the RS232-TTL module and the Bluetooth test unit.

[0007] Furthermore, the RS232-TTL module includes an RS232 transceiver and a digital isolator. The RS232 transceiver uses the UM3232E chip to perform bidirectional conversion between TTL level and RS-232 level. The digital isolator uses the NSI8221W1 chip to enhance electrical isolation performance.

[0008] Furthermore, the MCU main control unit adopts an STM32 series microcontroller with multiple UART serial communication interfaces, which are connected to each Bluetooth module one by one.

[0009] Furthermore, each Bluetooth module is based on the Realtek Bluetooth application system chip RS624MF, which supports the Bluetooth 5.0 protocol and Bluetooth LE 2Mbps.

[0010] Furthermore, each Bluetooth module is arranged close to the surface of the outer casing to optimize the wireless signal reception effect; the spacing between each Bluetooth module is not less than a preset threshold.

[0011] Furthermore, it also includes LED indicator lights, consisting of a power indicator light and communication indicator lights for each Bluetooth module. The power indicator light is used to show whether the device is powered normally, and the communication indicator lights for each Bluetooth module are used to show the working status of the corresponding Bluetooth module.

[0012] Furthermore, it also includes a DB9 interface, with both the power module and the RS232-TTL module connected to the DB9 interface to ensure communication between external devices and the device.

[0013] The beneficial effects of this utility model are: This novel master-slave adaptive multi-channel Bluetooth detection device employs multiple independent Bluetooth detection modules, each responsible for scanning one Bluetooth channel, significantly improving detection efficiency and signal acquisition probability. Users can flexibly enable, disable, or dynamically configure the working state and parameters of any Bluetooth detection module according to actual detection task requirements, achieving intelligent allocation and adaptive scheduling of hardware resources while ensuring performance and energy efficiency. Each Bluetooth module has an identical structure, forming a standard modular design, resulting in highly scalable, reliable, and stable systems that are easy to maintain. This invention significantly improves detection efficiency and signal acquisition probability through a multi-channel parallel scanning design, solving the problems of low efficiency and easy signal loss in traditional single-channel or time-division multiplexing methods. It is suitable for scenarios requiring efficient batch testing of Bluetooth communication, such as production testing, quality inspection, warehouse management, and on-site operation and maintenance, and has important practical value and broad application prospects.

[0014] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0015] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0016] Figure 1 A block diagram illustrating the principle of the master-slave adaptive multi-channel Bluetooth detection device of this invention is shown.

[0017] Figure 2 The electrical schematic diagram of the master-slave adaptive multi-channel Bluetooth detection device of this invention is shown. Detailed Implementation

[0018] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. Although preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0019] like Figure 1 , 2 As shown, this utility model provides a master-slave adaptive multi-channel Bluetooth testing device. The device includes a DB9 interface, an RS232-TTL module, a power module, an MCU main control unit, a Bluetooth testing unit, a housing, and LED indicators, forming a compact and efficient system suitable for scenarios involving efficient batch testing of Bluetooth devices.

[0020] The DB9 interface is located externally on the device and is used for communication and power supply to external devices. Internally, the DB9 interface connects to the RS232-TTL module via a serial port to ensure signal transmission stability. The RS232-TTL module consists of an RS232 transceiver and a digital isolator. The RS232 transceiver uses the UM3232E chip to perform bidirectional conversion between TTL and RS-232 levels. The digital isolator uses the NSI8221W1 chip to enhance electrical isolation performance and prevent external interference from affecting the internal circuitry.

[0021] The power supply module consists of a DC-DC regulated power supply and an LDO regulated power supply. The DC-DC regulated power supply steps down the externally input 12V DC voltage to 5V, providing the main power for the system; the LDO regulated power supply further converts the 5V voltage to 3.3V, powering the RS232-TTL module and Bluetooth test unit. This two-stage voltage regulation design ensures that each module can obtain a stable operating voltage under different load conditions, improving the reliability of the system.

[0022] MCU Master Control Unit: Utilizing an STM32 series MCU as the core controller, this unit has multiple UART serial ports, each corresponding to a Bluetooth testing module. The user sends commands through the master control unit to instruct the Bluetooth testing module to broadcast its presence (as a slave device). If the DUT is the master device, it will scan and attempt to connect. This connection request is captured by the Bluetooth testing module, which determines that the DUT for that channel is the master device. Conversely, if there are no connection requests within a certain period, the user sends commands through the master control unit to switch the Bluetooth testing module for that channel to master mode, actively scanning and connecting to the DUT. If successful, the DUT is determined to be a slave device. Based on this prediction, the user can configure the Bluetooth testing module for the corresponding channel to play a complementary role to the DUT through the master control unit.

[0023] Users can send AT command sets to designated Bluetooth detection modules via the main control unit's UART, instructing the modules to scan channels 37, 38, and 39 respectively. For example, "AT+SCAN=37" instructs the module to scan on channel 37. Upon receiving the command, the Bluetooth detection module's radio frequency unit scans the designated channel and transmits all scanned Bluetooth broadcast data packets back to the main control unit in real time via UART. After completing the detection task, all Bluetooth detection modules enter a low-power sleep state to conserve power.

[0024] Bluetooth test unit: includes multiple Bluetooth modules, each with the same structure. It is based on the Realtek RS624MF ultra-low power Bluetooth application system chip, supports Bluetooth 5.0 protocol, and supports Bluetooth LE 2Mbps. Each Bluetooth test module is connected to the MCU main control unit via serial port.

[0025] The housing integrates the power module, RS232-TTL module, MCU main control unit, and Bluetooth test unit into a single enclosed space, forming a compact overall structure. Each Bluetooth module is positioned close to the housing surface to optimize wireless signal reception. This layout not only facilitates installation and maintenance but also effectively reduces signal attenuation and improves testing accuracy.

[0026] The LED indicator lights include a power indicator and communication indicators for each Bluetooth module. The power indicator shows whether the device is powered on normally; the communication indicators for each Bluetooth module show the working status of the corresponding Bluetooth module, allowing users to monitor the device's operation in real time. These intuitive light cues allow users to quickly determine if there are any abnormalities in the device.

[0027] In practical applications, the device of this invention can be widely used in scenarios such as production testing, quality inspection, warehouse management, and on-site maintenance. For example, in production testing, when users need to simultaneously perform functional verification and performance testing on multiple Bluetooth devices, they can connect to an external computer via the DB9 interface, send testing commands to the device, initialize each Bluetooth module, and assign testing tasks. Each Bluetooth module scans in parallel on a designated channel, captures broadcast data packets from Bluetooth devices, and transmits them back to the MCU master control unit via UART. Based on the data packet content uploaded by the MCU master control unit, the user identifies the master / slave role of the device under test and issues commands to adjust the working mode of the Bluetooth module to adapt to the device under test. After the test is completed, a test report is automatically generated and sent to an external computer via an RS232-TTL module, while simultaneously controlling the Bluetooth module to enter a low-power sleep state to save power.

[0028] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A master-slave adaptive multi-channel Bluetooth detection device, characterized in that... The device includes a housing, inside which is housed an MCU main control unit and connected to a power module, an RS232-TTL module, and a Bluetooth test unit; The RS232-TTL module is used to perform bidirectional conversion between TTL level and RS-232 level, and communicates with the MCU main control unit through the serial port; The Bluetooth test unit consists of multiple independent Bluetooth modules. Each Bluetooth module is connected to the MCU main control unit via a serial port and is used to perform scanning and communication tasks on a specified Bluetooth channel.

2. The master-slave adaptive multi-channel Bluetooth detection device as described in claim 1, characterized in that... The power module includes a DC-DC regulated power supply and an LDO regulated power supply. The DC-DC regulated power supply is used to step down the externally input 12V DC power supply to 5V to provide the main power supply for the system. The LDO regulated power supply converts the 5V power supply to 3.3V to power the RS232-TTL module and the Bluetooth test unit.

3. The master-slave adaptive multi-channel Bluetooth detection device as described in claim 1, characterized in that... The RS232-TTL module includes an RS232 transceiver and a digital isolator. The RS232 transceiver uses the UM3232E chip to perform bidirectional conversion between TTL level and RS-232 level. The digital isolator uses the NSI8221W1 chip to enhance electrical isolation performance.

4. The master-slave adaptive multi-pass Bluetooth detection apparatus of claim 1, wherein The MCU main control unit adopts an STM32 series microcontroller and has multiple UART serial communication interfaces, which are connected to each Bluetooth module one by one.

5. The master-slave adaptive multi-pass Bluetooth detection apparatus of claim 1, wherein Each Bluetooth module is based on the Realtek RS624MF Bluetooth application system chip and supports the Bluetooth 5.0 protocol; it also supports Bluetooth LE 2Mbps.

6. The master-slave adaptive multi-channel Bluetooth detection device as described in claim 1, characterized in that... Each Bluetooth module is positioned close to the outer surface of the casing to optimize wireless signal reception; the spacing between each Bluetooth module is no less than a preset threshold.

7. The master-slave adaptive multi-channel Bluetooth detection device as described in claim 1, characterized in that... It also includes LED indicator lights, consisting of a power indicator light and communication indicator lights for each Bluetooth module. The power indicator light is used to show whether the device is powered on normally, and the communication indicator lights for each Bluetooth module are used to show the working status of the corresponding Bluetooth module.

8. The master-slave adaptive multi-pass Bluetooth detection apparatus of claim 1, wherein It also includes a DB9 interface, with both the power module and the RS232-TTL module connected to the DB9 interface to ensure communication between external devices and the device.

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