CN115835111A - Signal detection circuit, method and device - Google Patents
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Abstract
The invention discloses a signal detection circuit, a method and a device, wherein the signal detection circuit comprises: the device comprises a signal conversion module and a signal detection module, wherein the signal conversion module is connected with the signal detection module and is used for converting a received analog audio signal into a digital audio signal, and the signal detection module is used for receiving the digital audio signal and detecting the digital audio signal; according to the invention, the broadcasting signal is received, the signal conversion module is used for carrying out signal conversion on the broadcasting signal, the converted digital audio signal is transmitted to the signal detection module, the signal detection module is used for detecting the digital audio signal, the signal conversion module and the signal detection module are used for detecting the signal conversion of the vehicle-mounted broadcasting, and the detection of the signal of the vehicle-mounted broadcasting is not required through a plurality of hosts, antennae and the like, so that the research and development cost of products is reduced, the test steps are reduced, and the working efficiency is improved.
Description
Technical Field
The present invention relates to the field of signal detection technologies, and in particular, to a signal detection circuit, a method, and a device.
Background
The automobile industry has developed over 100 years, and various fuels and air are gradually developed from the initial steam-powered development to the internal combustion engine to provide power for driving the automobile to run. The functions are also becoming more and more abundant, and are no longer only satisfied with driving, and the requirements of users in the driving process can be satisfied through vehicle-mounted broadcasting.
The audio conversion equipment in the vehicle-mounted broadcast needs to be detected due to the fact that audio emitted by the vehicle-mounted broadcast has distortion, audio loss and the like, but at present, tens of CDC hosts, a large number of DAB BOX (BOX) and antennas and the like are generally needed for detecting the audio conversion equipment, and huge cost is brought to product research and development.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a signal detection circuit, a signal detection method and signal detection equipment, and aims to solve the technical problem of huge product research and development cost caused by the fact that the number of the equipment for detecting audio conversion equipment is large.
To achieve the above object, the present invention provides a signal detection circuit, including: the signal conversion module is connected with the signal detection module;
the signal conversion module is used for converting the received analog audio signal into a digital audio signal;
the signal detection module is used for receiving the digital audio signal and detecting the digital audio signal.
Optionally, the signal conversion module includes: the device comprises a power supply module and a signal transmission module; the power supply module is connected with the signal transmission module;
the power supply module is used for supplying power to the signal transmission module;
the signal transmission module is used for converting the signal and transmitting the converted signal to the signal detection module.
Optionally, the signal transmission module includes: the audio conversion device comprises a signal receiving device, an audio conversion device and a storage device, wherein the signal receiving device is connected with a first input end of the audio conversion device, and a first output end of the audio conversion device is connected with the storage device;
the signal receiving equipment is used for receiving a target signal, converting the target signal into an analog audio signal and transmitting the analog audio signal to the audio conversion equipment;
the audio conversion device is used for receiving the analog audio signal, converting the analog audio signal into a digital audio signal and transmitting the digital audio signal to a storage device;
the storage device is used for storing the received digital audio signal.
Optionally, the power module comprises: a first output end of the power supply is connected with the signal receiving equipment, and a second output end of the power supply is connected with a second input end of the audio conversion equipment;
the power supply is used for supplying power to the signal receiving equipment and the audio conversion equipment.
Optionally, the signal detection module includes: the playing device is connected with the second output end of the audio conversion device;
the playing device is used for reading the digital audio signals in the storage device and playing the digital audio signals;
the intelligent detection equipment is used for detecting the audio played by the broadcasting equipment and the audio played by the playing equipment.
Optionally, the signal detection module further includes: the audio analysis equipment is connected with the third output end of the audio conversion equipment;
and the audio analysis equipment is used for receiving the digital audio signal transmitted by the audio conversion equipment and detecting the digital audio signal.
In order to achieve the above object, the present invention further provides a signal detection method of a signal detection circuit, the signal detection method comprising:
the signal conversion module converts the received analog audio signal into a digital audio signal;
and the signal detection module receives the digital audio signal and detects the digital audio signal.
Optionally, the step of receiving the digital audio signal and detecting the digital audio signal by the signal detection module includes:
when the digital audio signal is received, analyzing the digital audio signal to generate an analysis report;
and judging whether the audio signal loss exists when the analog audio signal is converted into the digital audio signal according to various parameter values in the analysis report.
Optionally, the step of receiving the digital audio signal and detecting the digital audio signal by the signal detection module further includes:
the signal detection module records the digital audio signals according to a preset interval, stores the record to a target path and plays audio randomly;
and detecting the randomly played audio and the audio played by the broadcasting equipment.
Further, to achieve the above object, the present invention also proposes a signal detection apparatus comprising: a memory, a processor and a signal detection program stored on the memory and executable on the processor, the signal detection program when executed by the processor implementing the steps of the signal detection method as described above.
The invention discloses a signal detection circuit, a method and a device, wherein the signal detection circuit comprises: the device comprises a signal conversion module and a signal detection module, wherein the signal conversion module is connected with the signal detection module and is used for converting a received analog audio signal into a digital audio signal, and the signal detection module is used for receiving the digital audio signal and detecting the digital audio signal; according to the invention, the broadcasting signal is received, the signal conversion module is used for carrying out signal conversion on the broadcasting signal, the converted digital audio signal is transmitted to the signal detection module, the signal detection module is used for detecting the digital audio signal, the signal conversion module and the signal detection module are used for detecting the signal conversion of the vehicle-mounted broadcasting, and the detection of the signal of the vehicle-mounted broadcasting is not required through a plurality of hosts, antennae and the like, so that the research and development cost of products is reduced, the test steps are reduced, and the working efficiency is improved.
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In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a signal detection device of a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a signal detection circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another embodiment of a signal detection circuit according to the present invention;
FIG. 4 is a flowchart illustrating a signal detection method according to a first embodiment of the present invention;
FIG. 5 is a schematic diagram of a signal analysis structure of a signal detection circuit according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a signal conversion structure of the signal detection circuit according to an embodiment of the invention.
The implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a signal detection device in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the signal detection apparatus may include: a processor 1001, such as a Central Processing Unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), and the optional user interface 1003 may further include a standard wired interface and a wireless interface, and the wired interface for the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface, a Wireless interface (e.g., a Wireless-Fidelity (Wi-Fi) interface). The Memory 1005 may be a Random Access Memory (RAM) or a Non-volatile Memory (NVM), such as a disk Memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the signal detection device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in FIG. 1, memory 1005, identified as one type of computer storage medium, may include an operating system, a network communication module, a user interface module, and a signal detection program.
In the signal detection device shown in fig. 1, the network interface 1004 is mainly used for connecting to a background server and performing data communication with the background server; the user interface 1003 is mainly used for connecting user equipment; the signal detection apparatus calls a signal detection program stored in the memory 1005 through the processor 1001 and performs a signal detection method provided by an embodiment of the present invention.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a signal detection circuit according to an embodiment of the present invention.
As shown in fig. 2, the signal detection circuit includes: the device comprises a signal conversion module 10 and a signal detection module 20, wherein the signal conversion module 10 is connected with the signal detection module 20;
the signal conversion module 10 is configured to convert the received analog audio signal into a digital audio signal.
It is understood that the automotive industry has developed over 100 years, from the initial steam-powered to internal combustion engines, and that the development of mixed combustion of various fuels and air to provide the motive power for driving the vehicle has progressed. The functions are becoming more and more abundant, no longer only satisfy the driving, but also the cockpit entertainment, the broadcast Audio, the image, the video, the navigation, various communication functions and so on, take the example of converting the vehicle-mounted broadcast analog Audio into the digital Audio, the DAB BOX (car machine/radio) receives the broadcast analog signal from the FM (antenna hardware interface) antenna transmission, and then converts it into the analog Audio signal (electric signal) by the DAB BOX, input to the Audio conversion equipment, the ADC conversion chip (analog-to-digital converter) in the Audio conversion equipment (Audio conversion component) converts the analog Audio signal into the digital Audio signal, and then input to the CDC (sound host) to process, and play the Audio data through the speaker (speaker). In the process of developing audio conversion equipment products, how to verify the function becomes a necessary problem to be solved, and the function verification method is also required to be concise, feasible, effective and appropriate in cost. For example, in a work performance reliability experiment, tens of CDC hosts, a large number of DAB boxes, antennas, and the like are often required. This undoubtedly brings a huge cost to the product development.
In order to overcome the above defects, in the present embodiment, the signal conversion module 10 and the signal detection module 20 are used to convert the analog audio signal into the digital audio signal for detection, the present embodiment uses a radio to replace the DAB BOX and the antenna, uses a PC to replace the CDC host and the speaker, integrates the radio and the audio conversion device into the signal conversion module, and integrates the PC into the signal detection module, so that the signal converted by the audio conversion device can be detected only by the radio, the audio conversion device, and the PC without a plurality of CDC hosts, DAB hosts, and a large number of antennas, etc., thereby reducing the huge product development cost, and the present embodiment is more convenient and effective to implement.
It should be noted that the signal conversion module 10 includes a power supply, a radio, an audio conversion device, and a usb disk, where the radio transmits a received broadcast signal to the audio conversion device, and the audio conversion device converts the signal and transmits the converted signal to the signal detection module.
It should be noted that the radio receives FM broadcast signals through the antenna, and then transmits analog audio signals to the audio conversion device, and the audio conversion device converts the analog audio signals into digital audio signals, and then transmits the digital audio signals to the usb disk and the audio analyzer.
The signal detection module 20 is configured to receive the digital audio signal and detect the digital audio signal.
It should be noted that the signal detection module 20 may include a PC, an intelligent detection device, and may further include an audio analyzer.
It can be understood that the PC reads the digital audio signal stored in the usb disk through the upper computer software, and records the digital audio signal instead of saving the digital audio signal to the PC. The PC may play through an audio player.
It should be noted that the intelligent detection device is used to distinguish the audio played by the PC segment from the audio played by the FM broadcast, compare the difference between the two, if the two played audios are consistent, it indicates that there is no signal loss in the signal conversion process performed by the audio conversion device, and if the two played audios are inconsistent, it indicates that there is a signal loss in the signal conversion process performed by the audio conversion device.
It should be noted that, the audio analyzer performs signal analysis on the digital audio signal, and generates some analysis reports, and determines whether there is a signal loss in the signal conversion process of the audio conversion device through the analysis reports.
Further, in order to detect whether there is a signal loss in the signal conversion of the audio conversion device, the signal detection module 20 includes: the audio conversion device comprises a playing device 201 and an intelligent detection device 202, wherein the playing device 201 is connected with a second output end of the audio conversion device;
the playing device 201 is configured to read and play the digital audio signal in the storage device;
the intelligent detection device 202 is configured to detect the audio played by the broadcast device and the audio played by the play device.
It can be understood that the playback device 201 may be a PC, which is not limited in this embodiment, and the PC reads and stores the digital audio signal in the usb disk through the upper computer software.
It is understood that the storage device may be a usb disk, which is not limited in this embodiment, and the PC can only read data after detecting that a connection is established with the usb disk.
It should be noted that the smart detection device 202 determines whether there is signal loss in the process of converting the signal by the audio conversion device by determining whether there is a difference between the audio played by the broadcasting device and the audio played by the FM broadcast, for example, a song is received by the radio, and the smart detection device 202 determines whether the melody, the lyric, the intonation, the volume, and the like between the song played by the broadcasting device and the song played by the FM broadcast are consistent, and if so, it indicates that there is no signal loss in the signal conversion process by the audio conversion device, otherwise, there is signal loss.
Further, in order to improve the accuracy of detecting the audio conversion device, the signal detection module 20 further includes: the audio analysis device 203, the audio analysis device 203 is connected with the third output end of the audio conversion device;
the audio analysis device 203 is configured to receive the digital audio signal transmitted by the audio conversion device, and detect the digital audio signal.
It should be noted that the audio analysis device 203 includes an audio analyzer, and the audio analyzer analyzes the voltage, the frequency, the signal-to-noise ratio, the harmonic distortion, and the like of the digital audio signal, and generates some analysis reports, for example, the quality of the signal, the audio frequency response, the harmonic balance, and the like.
For convenience of understanding, reference is made to fig. 5 for explanation, fig. 5 is a schematic diagram of a signal analysis structure, which is not limited in this embodiment, in fig. 5, the signal conversion module 10 is connected to a PC through an HSD-to-USB connection line, the signal conversion module 10 is connected to an audio analyzer through a 12S bus, and the signal detection module 20 includes a playing device 201, an intelligent detection device 202, and an audio analysis device 203.
This embodiment proposes a signal detection circuit, the signal detection circuit comprising: the device comprises a signal conversion module and a signal detection module, wherein the signal conversion module is connected with the signal detection module and is used for converting a received analog audio signal into a digital audio signal, and the signal detection module is used for receiving the digital audio signal and detecting the digital audio signal; according to the invention, the broadcasting signal is received, the signal conversion module is used for carrying out signal conversion on the broadcasting signal, the converted digital audio signal is transmitted to the signal detection module, the signal detection module is used for detecting the digital audio signal, the signal conversion module and the signal detection module are used for detecting the signal conversion of the vehicle-mounted broadcasting, and the detection of the signal of the vehicle-mounted broadcasting is not required through a plurality of hosts, antennae and the like, so that the research and development cost of products is reduced, the test steps are reduced, and the working efficiency is improved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of another embodiment of the signal detection circuit of the present invention.
As shown in fig. 3, the signal conversion module 10 includes: a power supply module 101 and a signal transmission module 102; the power module 101 is connected with the signal transmission module 102;
the power module 101 is configured to supply power to the signal transmission module.
It is understood that the power module 101 is a power source, the power source supplies power to the signal transmission module 102, the signal transmission module 102 includes a radio and an audio conversion device, and the power source supplies power to the radio and the audio conversion device, respectively.
It is understood that the power source may be UTP1306S + in its model, and the present embodiment is not limited in this regard.
Further, in order to enable the devices of the signal transmission module 102 to operate normally, the power supply module 101 includes: a first output end of the power supply is connected with the signal receiving equipment, and a second output end of the power supply is connected with a second input end of the audio conversion equipment;
the power supply is used for supplying power to the signal receiving equipment and the audio conversion equipment.
It will be appreciated that the signal receiving device may be a radio and the audio conversion device may be an audio conversion device.
It will be appreciated that the radio is connected to a power source via a power adapter.
The signal transmission module 102 is configured to convert a signal and transmit the converted signal to the signal detection module.
It should be noted that the signal transmission module 102 includes a radio, an audio conversion device, and a usb disk, the radio receives FM broadcast signals and transmits analog audio signals to the audio conversion device, and the audio conversion device converts analog audio signals into digital audio signals and transmits the digital audio signals to the signal detection module 20.
Further, in order to enable the signal detection module 20 to detect the audio signal, the signal transmission module 102 includes: a signal receiving device 1021, an audio conversion device 1022 and a storage device 1023, wherein the signal receiving device 1021 is connected with a first input of the audio conversion device 1022, and a first output of the audio conversion device 1022 is connected with the storage device 1023;
the signal receiving device 1021, which is used for receiving a target signal, converting the target signal into an analog audio signal, and transmitting the analog audio signal to the audio converting device;
the audio conversion device 1022 is configured to receive the analog audio signal, convert the analog audio signal into a digital audio signal, and transmit the digital audio signal to a storage device;
the storage device 1023 is used for storing the received digital audio signal.
It is understood that the signal receiving device 1021 may be a radio, the audio conversion device 1022 may be an audio conversion device, and the storage device 1023 may be a usb disk.
It will be appreciated that the target signal is an FM broadcast signal, the radio receives the FM broadcast signal through the antenna, and the radio converts the FM broadcast signal to an analog audio signal.
It should be noted that the audio conversion device 1022 transmits the digital audio signal to the usb disk and the audio analyzer, respectively, and performs detection signal conversion in two ways, so as to improve the correctness of the detection result.
For easy understanding, referring to fig. 6, fig. 6 is a schematic diagram of a signal conversion structure, in fig. 6, a power supply is connected to a radio and an audio conversion device 1022 respectively, a signal receiving device 1021 is connected to the audio conversion device 1022 through an analog audio connection line, and the audio conversion device 1022 is connected to a storage device 1023 through a USB connection line.
The signal conversion module of the embodiment comprises: the device comprises a power supply module and a signal transmission module; the power supply module is connected with the signal transmission module; the power supply module is used for supplying power to the signal transmission module; the signal transmission module is used for converting the signal and transmitting the converted signal to the signal detection module. In the embodiment, the power supply module supplies power to the signal transmission module, the signal transmission module converts the analog audio signal into the digital audio signal, and the digital audio signal is transmitted to the signal detection module for detection, so that a large number of DAB BOX and antennae are reduced, and the working efficiency of signal detection is improved.
In addition, the embodiment also provides a signal detection method. Referring to fig. 4, fig. 4 is a flowchart illustrating a signal detection method according to a first embodiment of the present invention.
In this embodiment, the signal detection method includes the following steps:
step S10: the signal conversion module converts the received analog audio signal into a digital audio signal.
It is understood that the automotive industry has developed over 100 years, from the initial steam-powered to internal combustion engines, and that the development of mixed combustion of various fuels and air to provide the motive power for driving the vehicle has progressed. Functions are also becoming more and more abundant, which is no longer only satisfied with driving, as well as cabin entertainment, broadcast Audio, images, videos, navigation, various communication functions, etc., taking the example of converting vehicle-mounted broadcast analog Audio into digital Audio, DAB BOX (vehicle/radio) receives broadcast analog signals transmitted from FM (antenna hardware interface) antenna, and then converts the broadcast analog signals into analog Audio signals (electric signals) by DAB BOX, and inputs the analog Audio signals into Audio conversion equipment, and ADC conversion chips (analog-to-digital converters) in the Audio conversion equipment (Audio conversion component) convert the analog Audio signals into digital Audio signals, and then inputs the digital Audio signals into CDC (sound host) for processing, and plays Audio data through speakers (speaker). In the process of developing audio conversion equipment products, how to verify the function becomes a necessary problem to be solved, and the function verification method is required to be concise, feasible, effective and appropriate in cost. For example, in a work performance reliability experiment, tens of CDC hosts, a large number of DAB boxes, antennas, and the like are often required. This undoubtedly brings a huge cost to product development.
In order to overcome the above defects, in the present embodiment, the signal conversion module 10 and the signal detection module 20 are used to convert the analog audio signal into the digital audio signal for detection, the present embodiment uses a radio to replace the DAB BOX and the antenna, uses a PC to replace the CDC host and the speaker, integrates the radio and the audio conversion device into the signal conversion module, and integrates the PC into the signal detection module, so that the signal converted by the audio conversion device can be detected only by the radio, the audio conversion device, and the PC without a plurality of CDC hosts, DAB hosts, and a large number of antennas, etc., thereby reducing the huge product development cost, and the present embodiment is more convenient and effective to implement.
It should be noted that the signal conversion module includes a power supply, a radio, an audio conversion device, and a usb disk, the radio transmits a received broadcast signal to the audio conversion device, and the audio conversion device converts the signal and transmits the converted signal to the signal detection module.
It should be noted that the radio receives FM broadcast signals through the antenna, and then transmits analog audio signals to the audio conversion device, and the audio conversion device converts the analog audio signals into digital audio signals, and then transmits the digital audio signals to the usb disk and the audio analyzer.
Step S20: and the signal detection module receives the digital audio signal and detects the digital audio signal.
It should be noted that the signal detection module may include a PC, an intelligent detection device, and may further include an audio analyzer.
It can be understood that the PC reads the digital audio signal stored in the usb disk through the upper computer software, and records the digital audio signal instead of saving the digital audio signal to the PC. The PC may play through an audio player.
It should be noted that the intelligent detection device is used to distinguish the audio played by the PC segment from the audio played by the FM broadcast, compare the difference between the two, if the two played audios are consistent, it indicates that there is no signal loss in the signal conversion process performed by the audio conversion device, and if the two played audios are inconsistent, it indicates that there is a signal loss in the signal conversion process performed by the audio conversion device.
It should be noted that, the audio analyzer performs signal analysis on the digital audio signal, and generates some analysis reports, and determines whether there is a signal loss in the signal conversion process of the audio conversion device through the analysis reports.
It should be noted that the signal detection module includes a playback device, an intelligent detection device, and an audio analysis device.
It can be understood that the playback device may be a PC, which is not limited in this embodiment, and the PC reads and stores the digital audio signal in the usb disk through the upper computer software.
It is understood that the storage device may be a usb disk, which is not limited in this embodiment, and the PC can only read data after detecting that a connection is established with the usb disk.
It should be noted that, the intelligent detection device determines whether there is a signal loss in the process of converting the signal by the audio conversion device by determining whether there is a difference between the audio played by the broadcasting device and the audio played by the FM broadcast, for example, a song is received by the radio, and the intelligent detection device determines whether the melody, the lyric, the intonation, the volume, and the like between the song played by the broadcasting device and the song played by the FM broadcast are consistent, if so, it indicates that there is no signal loss in the signal conversion by the audio conversion device, otherwise, there is a signal loss.
Further, in order to make the detection result more accurate, step S20 of this embodiment may include:
when the digital audio signal is received, analyzing the digital audio signal to generate an analysis report;
and judging whether the audio signal loss exists when the analog audio signal is converted into the digital audio signal according to various parameter values in the analysis report.
It should be noted that, the audio analysis apparatus includes an audio analyzer, and the audio analyzer analyzes the voltage, the frequency, the signal-to-noise ratio, the harmonic distortion, and the like of the digital audio signal, and generates some analysis reports, for example, the quality of the signal, the audio frequency response, the harmonic balance, and the like.
Further, in order to determine whether there is a loss in the signal conversion process, step S20 of this embodiment may further include:
the signal detection module records the digital audio signals according to a preset interval, stores the record to a target path and plays audio randomly;
and detecting the randomly played audio and the audio played by the broadcasting equipment.
It should be noted that the preset interval may be set by the user himself or by the upper computer software, for example, 5 seconds are set for recording once.
It should be noted that, the smart detection device detects the randomly played audio and the audio played by the broadcast device, and determines whether there is a signal loss in the process of converting the signal by the audio conversion device by determining whether there is a difference between the audio played by the broadcast device and the audio played by the FM broadcast, for example, a song is received by the radio, and the smart detection device determines whether the melody, the lyrics, the intonation, the volume, and the like between the song played by the broadcast device and the song played by the FM broadcast are consistent, if so, it indicates that there is no signal loss in the signal conversion of the audio conversion device, otherwise, there is a signal loss.
For convenience of understanding, reference is made to fig. 5 for description, and fig. 5 is a schematic diagram of a signal analysis structure, which is not limited in this embodiment, in fig. 5, a signal conversion module is connected to a PC through an HSD-to-USB connection line, the signal conversion module is connected to an audio analyzer through a 12S bus, and a signal detection module includes a playing device, an intelligent detection device, and an audio analysis device.
The embodiment comprises the following steps: the device comprises a signal conversion module and a signal detection module, wherein the signal conversion module is connected with the signal detection module and is used for converting a received analog audio signal into a digital audio signal, and the signal detection module is used for receiving the digital audio signal and detecting the digital audio signal; according to the invention, the broadcasting signal is received, the signal conversion module is used for carrying out signal conversion on the broadcasting signal, the converted digital audio signal is transmitted to the signal detection module, the signal detection module is used for detecting the digital audio signal, the signal conversion module and the signal detection module are used for detecting the signal conversion of the vehicle-mounted broadcasting, and the detection of the signal of the vehicle-mounted broadcasting is not required through a plurality of hosts, antennae and the like, so that the research and development cost of products is reduced, the test steps are reduced, and the working efficiency is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or system that comprises the element.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.
Claims (10)
1. A signal detection circuit, the signal detection circuit comprising: the signal conversion module is connected with the signal detection module;
the signal conversion module is used for converting the received analog audio signal into a digital audio signal;
the signal detection module is used for receiving the digital audio signal and detecting the digital audio signal.
2. The signal detection circuit of claim 1, wherein the signal conversion module comprises: the device comprises a power supply module and a signal transmission module; the power supply module is connected with the signal transmission module;
the power supply module is used for supplying power to the signal transmission module;
the signal transmission module is used for converting the signal and transmitting the converted signal to the signal detection module.
3. The signal detection circuit of claim 2, wherein the signal transmission module comprises: the audio conversion device comprises a signal receiving device, an audio conversion device and a storage device, wherein the signal receiving device is connected with a first input end of the audio conversion device, and a first output end of the audio conversion device is connected with the storage device;
the signal receiving equipment is used for receiving a target signal, converting the target signal into an analog audio signal and transmitting the analog audio signal to the audio conversion equipment;
the audio conversion device is used for receiving the analog audio signal, converting the analog audio signal into a digital audio signal and transmitting the digital audio signal to a storage device;
the storage device is used for storing the received digital audio signal.
4. The signal detection circuit of claim 2, wherein the power supply module comprises: a first output end of the power supply is connected with the signal receiving equipment, and a second output end of the power supply is connected with a second input end of the audio conversion equipment;
the power supply is used for supplying power to the signal receiving equipment and the audio conversion equipment.
5. The signal detection circuit of claim 1, wherein the signal detection module comprises: the playing device is connected with the second output end of the audio conversion device;
the playing device is used for reading the digital audio signals in the storage device and playing the digital audio signals;
the intelligent detection equipment is used for detecting the audio played by the broadcasting equipment and the audio played by the playing equipment.
6. The signal detection circuit of claim 1, wherein the signal detection module further comprises: the audio analysis equipment is connected with the third output end of the audio conversion equipment;
and the audio analysis equipment is used for receiving the digital audio signal transmitted by the audio conversion equipment and detecting the digital audio signal.
7. A signal detection method applied to a signal detection circuit, the signal detection circuit comprising: the signal conversion module is connected with the signal detection module, and the signal detection method comprises the following steps:
the signal conversion module converts the received analog audio signal into a digital audio signal;
and the signal detection module receives the digital audio signal and detects the digital audio signal.
8. The signal detection method of claim 7, wherein the step of receiving the digital audio signal and detecting the digital audio signal by the signal detection module comprises:
when the digital audio signal is received, analyzing the digital audio signal to generate an analysis report;
and judging whether the audio signal loss exists when the analog audio signal is converted into the digital audio signal according to various parameter values in the analysis report.
9. The signal detection method of claim 7, wherein the step of receiving the digital audio signal and detecting the digital audio signal by the signal detection module further comprises:
the signal detection module records the digital audio signals according to a preset interval, stores the record to a target path and plays audio randomly;
and detecting the randomly played audio and the audio played by the broadcasting equipment.
10. A signal detection device, characterized in that the signal detection device comprises: memory, a processor and a signal detection program stored on the memory and executable on the processor, the signal detection program when executed by the processor implementing the steps of the signal detection method according to any one of claims 7 to 9.
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