CN219459062U - Bluetooth communication device and Bluetooth equipment testing system - Google Patents
Bluetooth communication device and Bluetooth equipment testing system Download PDFInfo
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- CN219459062U CN219459062U CN202320894432.6U CN202320894432U CN219459062U CN 219459062 U CN219459062 U CN 219459062U CN 202320894432 U CN202320894432 U CN 202320894432U CN 219459062 U CN219459062 U CN 219459062U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The application relates to a Bluetooth communication device and a Bluetooth equipment testing system, comprising a processor and a Bluetooth module. The processor is connected with the Bluetooth module, the Bluetooth module and the tested Bluetooth device establish communication connection through Bluetooth, and the Bluetooth module receives Bluetooth audio signals sent by the tested Bluetooth device and sends the Bluetooth audio signals to the processor. The Bluetooth audio signal is a signal basis of an audio analysis result of the tested Bluetooth device. The Bluetooth module is connected with the tested Bluetooth device in a Bluetooth connection mode, and when the tested Bluetooth device is tested, the convenience of the audio analyzer on the Bluetooth device test is improved.
Description
Technical Field
The application relates to the technical field of bluetooth communication, in particular to a bluetooth communication device and a bluetooth equipment testing system.
Background
In wireless communication, with the increasing rise of bluetooth devices, means for detecting bluetooth devices are becoming more sophisticated. Bluetooth devices are various, and in the transmission requirement, the language transmission index and the language definition of the bluetooth device need to be tested to test the device performance by taking the bluetooth device as an audio bluetooth device as an example. The language transmission index and the language definition of the Bluetooth device, namely the ratio percentage of the number of language units correctly known by a listener to the number of language units sent by a speaker after the language signal is transmitted by the system, comprise a language transmission index STI, a room acoustic language transmission index RASTI, an audio amplifier system language transmission index STIPA (also known as language definition) and the like. Among them, STIPA is an important acoustic index, which must be measured among many test items of Bluetooth devices.
One typically uses an audio analyzer to measure the STIPA index of a Bluetooth device, while an audio analyzer capable of detecting the STIPA index typically uses a wired connection to effect testing of the audio device. The test mode tests through wiring, different wiring ports are required to be prepared for different Bluetooth devices, wiring is complex, efficiency is low, and the test is not convenient enough.
Disclosure of Invention
Based on this, it is necessary to provide a bluetooth communication device and a bluetooth device testing system capable of improving the convenience of the audio analyzer for testing bluetooth devices in order to solve the above-mentioned technical problems.
In a first aspect, the present application provides a bluetooth communication device, where the bluetooth communication device includes a processor and a bluetooth module, where the processor is connected to the bluetooth module, and the bluetooth module establishes communication connection with a bluetooth device to be tested through bluetooth;
the Bluetooth module receives a Bluetooth audio signal sent by the tested Bluetooth device and sends the Bluetooth audio signal to the processor; the Bluetooth audio signal is a signal basis of an audio analysis result of the tested Bluetooth device.
In one embodiment, the device further comprises an audio sampling rate converter, wherein the audio sampling rate converter is connected with the processor and the Bluetooth module.
In one embodiment, the number of the audio sampling rate converters is two, and each audio sampling rate converter is connected to the processor and the bluetooth module.
In one embodiment, the audio sample rate converter is a CS8421 sample rate converter.
In one embodiment, the Bluetooth module is a CSR8675 Bluetooth decoder.
In one embodiment, the Bluetooth module further comprises an amplifying antenna, and the amplifying antenna is connected with the Bluetooth module.
In one embodiment, the system further comprises a data transmission interface, wherein the data transmission interface is connected with the processor.
In a second aspect, the application further provides a bluetooth device testing system, where the bluetooth device testing system includes an upper computer, an audio analyzer and a bluetooth communication device as described above, where the upper computer is connected with the audio analyzer and the bluetooth communication device, where the audio analyzer is connected with the bluetooth communication device, and where the bluetooth communication device and the bluetooth device to be tested establish communication connection through bluetooth.
In one embodiment, the Bluetooth device further comprises a manual nozzle, wherein the manual nozzle is connected with the audio analyzer and establishes communication connection with the tested Bluetooth device through Bluetooth.
In one embodiment, the Bluetooth device further comprises a microphone, wherein the microphone is connected with the audio analyzer and establishes communication connection with the tested Bluetooth device through Bluetooth.
The Bluetooth communication device and the Bluetooth equipment testing system comprise a processor and a Bluetooth module. The processor is connected with the Bluetooth module, the Bluetooth module and the tested Bluetooth device establish communication connection through Bluetooth, and the Bluetooth module receives Bluetooth audio signals sent by the tested Bluetooth device and sends the Bluetooth audio signals to the processor. The Bluetooth audio signal is a signal basis of an audio analysis result of the tested Bluetooth device. The Bluetooth module is connected with the tested Bluetooth device in a Bluetooth connection mode, and when the tested Bluetooth device is tested, the convenience of the audio analyzer on the Bluetooth device test is improved.
Drawings
Fig. 1 is a schematic diagram of a bluetooth communication device according to an embodiment;
fig. 2 is a schematic structural diagram of another embodiment of a bluetooth communication device;
fig. 3 is a schematic structural diagram of a bluetooth communication device according to another embodiment;
fig. 4 is a schematic structural diagram of a bluetooth communication device according to yet another embodiment;
FIG. 5 is a block diagram of a Bluetooth communication device according to one embodiment;
fig. 6 is a schematic structural diagram of a bluetooth device testing system according to an embodiment;
fig. 7 is a schematic structural diagram of a bluetooth device testing system according to another embodiment;
fig. 8 is a schematic structural diagram of a bluetooth device testing system according to yet another embodiment;
fig. 9 is a block diagram of a bluetooth communication device according to another embodiment;
FIG. 10 is a diagram of an application environment of a Bluetooth communication device in one embodiment;
fig. 11 is a diagram illustrating an application environment of a bluetooth communication device according to another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. Both the first resistor and the second resistor are resistors, but they are not the same resistor.
It is to be understood that in the following embodiments, "connected" is understood to mean "electrically connected", "communicatively connected", etc., if the connected circuits, modules, units, etc., have electrical or data transfer between them.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
In one embodiment, as shown in fig. 1, a bluetooth communication device is provided, where the bluetooth communication device includes a processor 102 and a bluetooth module 104, the processor 102 is connected to the bluetooth module 104, and the bluetooth module 104 establishes a communication connection with a bluetooth device under test through bluetooth. The bluetooth module 104 receives the bluetooth audio signal sent by the bluetooth device under test and sends the bluetooth audio signal to the processor 102.
The Bluetooth device to be tested is an audio Bluetooth device, and the Bluetooth audio signal is a signal basis of an audio analysis result of the Bluetooth device to be tested. For the tested Bluetooth device, the output Bluetooth audio signal characterizes the quality of the tested Bluetooth device. And the Bluetooth audio signal is detected and analyzed to obtain an audio analysis result. Further, according to the audio analysis result, a quality test result of the tested Bluetooth device can be obtained.
Specifically, the bluetooth module 104 establishes connection with the bluetooth device to be tested through bluetooth, and receives a bluetooth audio signal sent by the bluetooth device to be tested. The bluetooth module 104 can receive a bluetooth audio signal sent by a bluetooth device under test in a wireless bluetooth communication manner, and perform format conversion on the bluetooth audio signal, where the bluetooth audio signal after format conversion can be transmitted in a wired manner. After receiving the bluetooth audio signal sent by the bluetooth device under test, the bluetooth module 104 converts the bluetooth audio signal into a format and sends the converted format to the processor 102.
Alternatively, the processor 102 may be a microcomputer with audio analysis software downloaded therein or a plug-in or chip built-in to analyze bluetooth audio signals. When the processor 102 is a microcomputer, the processor 102 can also send instruction data to the bluetooth module 104, and control the bluetooth module 104 to send the instruction data to the bluetooth device to be tested in a bluetooth communication connection mode, so as to control the bluetooth device to be tested. When the bluetooth module 104 sends the bluetooth audio signal to the processor 102 in a wired transmission manner, the processor 102 can analyze the bluetooth audio signal, for example, analyze the audio characteristics (such as frequency, signal-to-noise ratio, etc.) of the bluetooth audio signal, to obtain an audio analysis result.
Alternatively, the processor 102 may be a processing chip, which only performs format conversion on the signal, and does not have audio analysis capability itself. The processor 102 converts the bluetooth audio signal into a data signal, and the data signal has a wider application range than the bluetooth audio signal, and is matched with the data types received by most of terminal devices, so that the processor 102 can conveniently transmit the bluetooth audio signal to other terminal devices connected with the bluetooth communication device. Under the condition that the processor 102 only performs format conversion of signals, the bluetooth communication device needs to be connected with a terminal device to realize testing of the tested bluetooth device, and at the moment, the terminal device is responsible for analyzing data signals after bluetooth audio signal conversion to obtain an audio analysis result of the tested bluetooth device. The processor 102 may also receive a data signal sent by the terminal device, convert the data signal into a bluetooth data signal for wired transmission, and send the bluetooth data signal to the bluetooth module 104.
Illustratively, the bluetooth module 104 may be a bluetooth decoder that implements a conversion of bluetooth audio signals from wireless to wired transmissions. The processor 102 may be an MCU chip (Microcontroller Unit, micro control unit) to perform format conversion of the signals. The bluetooth audio signal transmitted by the wire may be an I2S format signal (an Inter-IC Sound, integrated circuit built-in audio bus transmission signal), and the data signal may be a USB format signal.
In this embodiment, the bluetooth communication device includes a processor 102 and a bluetooth module 104. The processor 102 is connected with the Bluetooth module 104, the Bluetooth module 104 establishes communication connection with the tested Bluetooth device through Bluetooth, the Bluetooth module 104 receives Bluetooth audio signals sent by the tested Bluetooth device, and the Bluetooth audio signals are sent to the processor 102. The Bluetooth audio signal is a signal basis of an audio analysis result of the tested Bluetooth device. The bluetooth module 104 is connected with the bluetooth equipment to be tested in a bluetooth connection mode, and when the bluetooth equipment to be tested is tested, convenience of the audio analyzer on the bluetooth equipment test is improved.
In one embodiment, as shown in fig. 2, the bluetooth communication device further comprises an audio sample rate converter 202, wherein the audio sample rate converter 202 is coupled to the processor 102 and the bluetooth module 104.
Wherein the audio sample rate converter 202 may change the sample rate of different frequencies (kilohertz) from one rate to another, any rate and tone variations during the transmission of audio from one system to another may be prevented. Mainly for maintaining the output quality of audio and/or video between devices.
In particular, when bluetooth module 104 converts bluetooth audio signals to a format, data changes in audio may occur, including, but not limited to, changes in audio frequency. By providing the audio sample rate converter 202, errors in the format conversion process of the Bluetooth audio signal can be reduced. The audio sample rate converter 202 may be set by a user, who may correspondingly select the sample rate in the audio sample rate converter 202 based on the frequency or rate at which the output audio of the bluetooth device under test has. The bluetooth audio signal is then sent to the processor 102 after being conditioned in the audio sample rate converter 202.
Optionally, the types of audio sample rate converters 202 include synchronous converters and asynchronous converters. The asynchronous converter is selected in the scheme, more tested Bluetooth equipment can be matched, and the applicability of the Bluetooth communication device is improved. The sample rate conversion of the audio sample rate converter 202 typically takes 8kHz-16kHz.
In this embodiment, the bluetooth communication device further includes an audio sampling rate converter 202, where the audio sampling rate converter 202 converts the rate and/or frequency of the bluetooth audio signal to be the same as the rate and/or frequency of the bluetooth device to be tested, so that errors of the bluetooth audio signal in the format conversion process are reduced, and the transmission accuracy of the bluetooth communication device is improved.
In one embodiment, as shown in FIG. 3, the number of audio sample rate converters 202 is two, each audio sample rate converter 202 being coupled to the processor 102 and the Bluetooth module 104.
Specifically, the bluetooth communication device may receive a bluetooth audio signal of the bluetooth device under test, and may also receive a data signal of a terminal device connected to the bluetooth communication device. The audio sample rate converter 202 needs to receive bluetooth audio signals from the bluetooth module 104 as well as bluetooth audio signals from the processor 102. In order to ensure the accuracy of the bluetooth audio signal transmission, the number of the audio sampling rate converters 202 may be two, which are respectively located in different data transmission channels, and each audio sampling rate converter 202 is connected to the processor 102 and the bluetooth module 104. One of the audio sample rate converters 202 is configured to receive bluetooth audio signals from the bluetooth module 104 and the other audio sample rate converter 202 is configured to receive bluetooth audio signals from the processor 102.
In this embodiment, the number of the audio sampling rate converters 202 is two, and each audio sampling rate converter 202 is connected to the processor 102 and the bluetooth module 104. One of the audio sample rate converters 202 is configured to receive bluetooth audio signals from the bluetooth module 104 and the other audio sample rate converter 202 is configured to receive bluetooth audio signals from the processor 102. Bluetooth audio signals transmitted in different directions are isolated, the problem that Bluetooth audio signals are mixed to influence the transmission accuracy of the Bluetooth audio signals is avoided, and the reliability of the Bluetooth communication device is improved.
In one embodiment, the audio sample rate converter 202 is a CS8421 sample rate converter. The CS8421 sample rate converter is an asynchronous stereo sample rate converter, and the digital audio input and output range of the CS8421 sample rate converter is wide, including 32 bits, 24 bits, 20 bits, and 16 bits. Meanwhile, the CS8421 sampling rate converter supports the sampling rate of 8kHz to 192kHz, the optional range is large, and most of tested Bluetooth devices can be covered. And the CS8421 sampling rate converter has simple hardware configuration, can realize functions without an external microcontroller, and ensures that the Bluetooth communication device is concise in setting and high in communication efficiency. It is understood that in other embodiments, the audio sample rate converter 202 may also be a MS8422N sample rate converter. The model number selected in this embodiment is not limited to the audio sample rate converter 202 in this embodiment.
In one embodiment, bluetooth module 104 is a CSR8675 bluetooth decoder. The CSR8675 Bluetooth decoder has two I2S ports with a strong audio connection capability to external components. For example, when the bluetooth communication device includes two audio sample rate converters 202, the audio sample rate converters 202 may be connected through the two I2S ports, respectively. The CSR8675 Bluetooth decoder is compact in structure, powerful in function, compatible with multiple versions of Bluetooth communication protocols and capable of being connected with most tested Bluetooth devices in a Bluetooth matching mode. The applicability of the Bluetooth communication device is improved. It is understood that in other embodiments, the bluetooth module 104 may also be a QCC5125 bluetooth decoder. The model selected in this embodiment is not limited to the bluetooth module 104 in this embodiment.
In one embodiment, as shown in fig. 4, the bluetooth communication device further includes an amplifying antenna 402, where the amplifying antenna 402 is connected to the bluetooth module 104.
Specifically, when the bluetooth module 104 establishes communication connection with the bluetooth device under test through bluetooth, signals transmitted by bluetooth will attenuate along with the transmission distance and be easily blocked by metal. An amplifying antenna 402 is arranged on the Bluetooth module 104, and Bluetooth signals are enhanced through the amplifying antenna 402, so that the Bluetooth module 104 and the tested Bluetooth device can conveniently establish communication connection through Bluetooth.
Alternatively, the Bluetooth module 104 may be a Bluetooth decoder. When the bluetooth module 104 is a bluetooth decoder, the bluetooth decoder is typically a device with an enhanced signal such as a small antenna, but the degree of enhancement is limited due to model or volume limitations. The amplification antenna 402 further enhances the bluetooth signal on the basis of the bluetooth decoder, so that the bluetooth module 104 and the bluetooth device to be tested can establish communication connection through bluetooth.
In this embodiment, the bluetooth communication device further includes an amplifying antenna 402, and the amplifying antenna 402 is connected to the bluetooth module 104. The Bluetooth communication signal of the Bluetooth module 104 is enhanced through the amplification antenna 402, so that the Bluetooth module 104 and the tested Bluetooth equipment are conveniently connected in a communication manner through Bluetooth, and the applicability of the Bluetooth communication device is improved.
In one embodiment, as shown in fig. 5, the bluetooth communication device further includes a data transmission interface 502, where the data transmission interface 502 is connected to the processor 102.
Specifically, in order to facilitate connection between the bluetooth communication device and the terminal device, a data transmission interface 502 is provided in the bluetooth communication device, where the data transmission interface 502 is connected to the processor 102, so that the processor 102 sends a data signal to the terminal device. The user can select different terminal devices according to the needs to finish the test of the tested Bluetooth device.
Alternatively, the Type of the data transmission interface 502 is not unique, and may be a USB interface or a USB-C interface (i.e., USB Type-C interface), or the like. Different terminal devices can be connected through different types of data transmission interfaces 502, so that the Bluetooth communication device is guaranteed to have better expansibility.
In this embodiment, the bluetooth communication device further includes a data transmission interface 502, and different terminal devices are connected through the data transmission interface 502, so as to realize the test of the bluetooth device under test together with the bluetooth communication device. The data transmission interface 502 ensures the expansibility and applicability of the bluetooth communication device.
Based on the same technical conception, the embodiment of the application also provides a Bluetooth equipment testing system comprising the Bluetooth communication device of any embodiment. The implementation of the solution provided by the system is similar to that described in the above device, so the specific limitation in the embodiments of the testing system of one or more bluetooth devices provided below may be referred to the limitation of the bluetooth communication device hereinabove, and will not be repeated herein.
In one embodiment, as shown in fig. 6, a bluetooth device testing system is provided, which includes a host computer 602, an audio analyzer 604, and a bluetooth communication device 606 as described above. The upper computer 602 is connected with the audio analyzer 604 and the Bluetooth communication device 606, the audio analyzer 604 is connected with the Bluetooth communication device 606, and the Bluetooth communication device 606 and the tested Bluetooth equipment are in communication connection through Bluetooth.
The audio analyzer 604 is an analysis type instrument capable of measuring various electroacoustic parameters of various single audio devices such as a microphone, an audio power amplifier, a speaker, and the like, and also capable of testing the overall performance of a combination audio device such as a combination sound box and a sound console. The audio analyzer 604 also has a software sound card for recording audio information.
Specifically, the bluetooth device to be tested is an audio bluetooth device. The bluetooth communication device 606 receives the bluetooth audio signal of the bluetooth device under test, and converts the bluetooth audio signal into a data signal, which can be directly received by the upper computer 602 and the audio analyzer 604. The method for testing the tested bluetooth device is not unique, and the bluetooth device testing system in this embodiment can use three methods to realize the test of the tested bluetooth device. First, the bluetooth communication device 606 sends a data signal to the audio analyzer 604, and the audio analyzer 604 tests the bluetooth device under test. Second, the bluetooth communication device 606 sends a data signal to the host 602, and the host 602 tests the bluetooth device under test. Third, the bluetooth communication device 606 sends the data signal to the audio analyzer 604, the audio analyzer 604 tests the bluetooth device to be tested to obtain test data, and sends the test data to the upper computer 602, and the upper computer 602 analyzes the test data to obtain the audio analysis result of the bluetooth device to be tested.
Alternatively, the upper computer 602 may be a computer. The audio analyzer 604 may be a distortion analyzer, a spectrum analyzer, a frequency counter, an audio oscilloscope, or the like.
In this embodiment, the bluetooth device testing system includes an upper computer 602, an audio analyzer 604 and a bluetooth communication device 606, where the upper computer 602 is connected with the audio analyzer 604 and the bluetooth communication device 606, and the audio analyzer 604 is connected with the bluetooth communication device 606, so as to implement a multi-mode test on a tested bluetooth device, so that the bluetooth device testing system can adapt to tested bluetooth devices with various testing requirements, and the application range of the bluetooth device testing system is improved.
In one embodiment, as shown in fig. 7, the bluetooth device testing system further includes a manual nozzle 702, where the manual nozzle 702 is connected to the audio analyzer 604 and establishes a communication connection with the bluetooth device under test via bluetooth.
The artificial mouth 702 is a special artificial sound source, and is formed by mounting a small speaker on a baffle with a special shape. The baffle shape is designed to simulate the average directivity and radiation pattern of the human mouth and to output a constant sound pressure. In this embodiment, the audio analyzer 604 may select an HFP (Hands Free) test mode for testing whether the operation of the headset is abnormal and sound quality, test items include a primary-secondary MIC (Microphone) frequency response (Frequency Response), a distortion ratio (THD, total harmonic distortion, total harmonic distortion), a primary-secondary MIC Sensitivity (Sensitivity), a transmission loudness (SLR, sending loud rating), a primary-secondary MIC air tightness curve, a primary-secondary MIC air tightness difference curve, and the like.
Specifically, the host computer 602 sends a sound command to the audio analyzer 604, and the sound command is converted into an audio signal by the audio analyzer 604 and transmitted to the artificial mouth 702. The artificial mouth 702 sounds a specified audio parameter (such as a specified frequency, a specified tone, or a specified timbre) according to the audio signal, simulating the environment in which the bluetooth device under test is used. The audio device under test receives sound from the artificial mouth 702, generates a bluetooth audio signal, and transmits the bluetooth audio signal to the bluetooth communication device 606 via bluetooth. The bluetooth communication device 606 sends data signals to the audio analyzer 604 and/or the upper computer 602, and the audio analyzer 604 and/or the upper computer 602 analyzes the data signals to obtain an audio analysis result of the audio device under test.
In one embodiment, as shown in fig. 8, the bluetooth device testing system further includes a microphone 802, where the microphone 802 is connected to the audio analyzer 604 and establishes a communication connection with the bluetooth device under test via bluetooth.
The microphone 802 is also called an electret condenser microphone, and is a transducer, which is a conversion device that converts acoustic energy into electric energy and outputs the electric energy. In this embodiment, the audio analyzer 604 may select an A2DP (Advanced Audio Distribution Profile, bluetooth audio transmission model protocol) test mode for testing sound quality. Test items include Power test (Power output), signal-to-noise Ratio (S/N Ratio), crosstalk separation (Channel Separation), channel Balance (Channel Balance), sensitivity (Sensitivity), distortion Ratio (THD), and frequency response (Frequency Response), among others.
Specifically, the host computer 602 sends a start command to the audio analyzer 604, and the start command is transmitted to the bluetooth communication device 606 through the audio analyzer 604. Or the host 602 directly sends a start command to the bluetooth communication device 606. The bluetooth communication device 606 receives the start command and converts the start command to obtain a bluetooth start signal, and the bluetooth communication device 606 sends the bluetooth start signal to the bluetooth device to be tested through bluetooth. And the tested Bluetooth device starts to operate after receiving the Bluetooth starting signal so as to make a sound according to the audio parameters of the tested Bluetooth device. The microphone 802 converts the sound emitted by the bluetooth device under test into an audio signal and sends the audio signal to the audio analyzer 604. The audio analyzer 604 analyzes the audio signal to obtain test data, and transmits the test data to the host computer 602. The upper computer 602 obtains the audio analysis result of the tested bluetooth device according to the test data.
In the above embodiment, the bluetooth device testing system is provided with the manual nozzle 702 and the microphone 802 respectively, so that the tested bluetooth devices with different testing requirements under different testing scenes can be tested, and the applicability of the bluetooth device testing system is improved.
For a better understanding of the above, a detailed explanation is provided below in connection with a specific embodiment.
In one embodiment, as shown in fig. 9, the bluetooth communication device includes a data transmission interface 502, a processor 102, an audio sample rate converter 202, a bluetooth module 104, and an amplification antenna 402, which are connected in sequence. The data transmission interface 502 is a USB interface, the processor 102 is an MCU, the number of the audio sampling rate converters 202 is two, and both the audio sampling rate converters are CS8421 sampling rate converters, the bluetooth module 104 is a CSR8675 bluetooth decoder, and the amplifying antenna 402 is connected to the CSR8675 bluetooth decoder.
During Bluetooth communication, the CSR8675 Bluetooth decoder establishes Bluetooth communication connection with the tested Bluetooth device through the amplifying antenna 402. Upon receiving the bluetooth signal, the CSR8675 bluetooth decoder converts the received bluetooth audio signal to an I2S formatted signal that is sent to the CS8421 sample rate converter. The CS8421 sampling rate converter still transmits the sampling rate converted signal to the MCU in the form of an I2S signal, the MCU converts the I2S signal into a USB signal, and the USB signal is sent to the connected terminal equipment through a USB interface. When transmitting the Bluetooth signal, the MCU receives the USB signal of the terminal equipment through the USB interface, converts the USB signal into a signal in an I2S format and transmits the signal to the CS8421 sampling rate converter. The CS8421 sample rate converter is not the same CS8421 sample rate converter here as the CS8421 sample rate converter when receiving bluetooth signals. The sampling rate converter of the CS8421 still transmits the sampling rate converted signal to the CSR8675 Bluetooth decoder in the form of an I2S signal, and the CSR8675 Bluetooth decoder converts the I2S format signal into a Bluetooth signal and transmits the Bluetooth signal to the tested Bluetooth device.
In combination with the bluetooth device testing system of fig. 7 and fig. 8, an application scenario diagram of the bluetooth communication device shown in fig. 10 and fig. 11 can be obtained. The bluetooth communication device 606 is connected with a computer through a USB, at the moment, the tested bluetooth equipment is opened to be in a bluetooth pairing state, and the computer sends an instruction through a USB interface to control the bluetooth communication device 606 to establish communication connection with the tested bluetooth equipment through bluetooth.
In fig. 10, the audio analyzer is first adjusted to HFP mode using a person. The computer sends a sounding instruction to the audio analyzer, the sounding instruction is converted into an audio signal by the audio analyzer and is transmitted to the artificial mouth, and the artificial mouth sends out the sound of the appointed audio parameters (such as the appointed frequency, the appointed tone or the appointed tone) according to the audio signal to simulate the service environment of the tested Bluetooth device. The tested audio equipment receives sound emitted by the artificial mouth, generates a Bluetooth audio signal and sends the Bluetooth audio signal to the Bluetooth communication device through Bluetooth communication connection. The Bluetooth communication device sends data signals to the audio analyzer and/or the computer, and the audio analyzer and/or the computer analyzes the data signals to obtain an audio analysis result of the audio equipment to be tested.
In fig. 11, the audio analyzer is first adjusted to enter the A2DP mode using a human. And the computer sends a starting instruction to the audio analyzer, and the starting instruction is transmitted to the Bluetooth communication device through the audio analyzer. Or the computer directly sends a starting instruction to the Bluetooth communication device. The Bluetooth communication device receives the starting instruction and converts the starting instruction into a Bluetooth starting signal, and the Bluetooth communication device sends the Bluetooth starting signal to the tested Bluetooth device through Bluetooth communication connection. The tested Bluetooth equipment starts to operate after receiving the Bluetooth starting signal, and sounds with the audio parameters of the tested Bluetooth equipment. The microphone converts the sound into an audio signal and sends the audio signal to the audio analyzer. The audio analyzer analyzes the audio signal to obtain test data, and sends the test data to the computer. And the computer obtains the audio analysis result of the tested Bluetooth device according to the test data.
In this embodiment, the bluetooth communication device has fast bluetooth connection speed and multiple functions, and can adapt to the testing environments of various bluetooth devices. The Bluetooth communication device can also cooperate with automatic test in the production process, so that the production efficiency is improved.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. The Bluetooth communication device is characterized by comprising a processor and a Bluetooth module, wherein the processor is connected with the Bluetooth module, and the Bluetooth module and a tested Bluetooth device are in communication connection through Bluetooth;
the Bluetooth module receives a Bluetooth audio signal sent by the tested Bluetooth device and sends the Bluetooth audio signal to the processor; the Bluetooth audio signal is a signal basis of an audio analysis result of the tested Bluetooth device.
2. The bluetooth communication device according to claim 1, further comprising an audio sample rate converter, wherein the audio sample rate converter is coupled to the processor and the bluetooth module.
3. The bluetooth communication device according to claim 2, wherein the number of audio sample rate converters is two, each of the audio sample rate converters being connected to the processor and the bluetooth module.
4. The bluetooth communication device according to claim 2, wherein the audio sample rate converter is a CS8421 sample rate converter.
5. The bluetooth communication device according to claim 1, wherein the bluetooth module is a CSR8675 bluetooth decoder.
6. The bluetooth communication device according to claim 1, further comprising an booster antenna, wherein the booster antenna is connected to the bluetooth module.
7. The bluetooth communication device according to claim 1, further comprising a data transmission interface, the data transmission interface being coupled to the processor.
8. A bluetooth device testing system, characterized in that the bluetooth device testing system comprises an upper computer, an audio analyzer and a bluetooth communication device according to any one of claims 1-7, wherein the upper computer is connected with the audio analyzer and the bluetooth communication device, the audio analyzer is connected with the bluetooth communication device, and the bluetooth communication device and a bluetooth device to be tested are in communication connection through bluetooth.
9. The bluetooth device testing system according to claim 8, further comprising a manual nozzle connected to the audio analyzer and establishing a communication connection with the bluetooth device under test via bluetooth.
10. The bluetooth device testing system according to claim 8, further comprising a microphone connected to the audio analyzer and establishing a communication connection with the bluetooth device under test via bluetooth.
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| CN202320894432.6U CN219459062U (en) | 2023-04-11 | 2023-04-11 | Bluetooth communication device and Bluetooth equipment testing system |
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| CN202320894432.6U Active CN219459062U (en) | 2023-04-11 | 2023-04-11 | Bluetooth communication device and Bluetooth equipment testing system |
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| CN (1) | CN219459062U (en) |
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