CN111263288A - Loudspeaker state diagnosis system, method, device and medium - Google Patents
Loudspeaker state diagnosis system, method, device and medium Download PDFInfo
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- CN111263288A CN111263288A CN202010205029.9A CN202010205029A CN111263288A CN 111263288 A CN111263288 A CN 111263288A CN 202010205029 A CN202010205029 A CN 202010205029A CN 111263288 A CN111263288 A CN 111263288A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R29/00—Monitoring arrangements; Testing arrangements
- H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
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Abstract
The application discloses diagnostic system, method, device and medium of loudspeaker state, this system includes: the power amplifier is connected with the loudspeaker and used for amplifying the signal and outputting the signal to the loudspeaker; the current detection component is connected with the power amplifier and is used for detecting a current signal of a loudspeaker connected with the power amplifier; the audio output component is connected with the power amplifier and is used for outputting an audio signal to the power amplifier after receiving the diagnosis instruction; and the MCU is connected with the current detection part and the audio output part and is used for outputting a diagnosis instruction to the audio output part during diagnosis and determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process. By adopting the technical scheme, in the diagnosis process, the current signals are collected, so that the output quality of the audio signals is not influenced, and the loudspeaker has no relation with a physical interface of the loudspeaker, so that the loudspeaker can be suitable for loudspeakers in various forms, and the universality is good.
Description
Technical Field
The present disclosure relates to the field of electronic devices, and in particular, to a system, a method, an apparatus, and a medium for diagnosing a speaker status.
Background
Telematics BOX, vehicle-mounted T-BOX or TBOX for short, the car networking system comprises four parts, a host, the TBOX, a mobile phone APP and a background system. The host is mainly used for video and audio entertainment and vehicle information display; the TBOX is mainly used for communicating with a background system/a mobile phone APP, and vehicle information display and control of the mobile phone APP are achieved. The TBOX integrates emergency call functions of ECALL, BCALL and the like, and the loudspeaker is used as a sound production component of the TBOX, which is very important in emergency, so that the TBOX needs to have a self-diagnosis function for an externally-connected loudspeaker. The loudspeaker is divided into an access state and a non-access state according to the connection state, wherein the access state is divided into a normal state and a short circuit state.
In order to realize the diagnosis of the state of the loudspeaker, in the prior art, the judgment is carried out by collecting the audio signal and the audio signal is connected through two differential lines, wherein one disadvantage of collecting the audio signal is that the output quality of the audio signal is possibly influenced, and the two differential lines are not suitable for the loudspeaker only provided with a single-ended signal line, so the application range is single.
Therefore, how to reduce the influence on the output quality of the audio signal and improve the universality in the self-diagnosis process is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
An object of the present application is to provide a system, method, apparatus and medium for diagnosing a horn state, which can reduce an influence on an output quality of an audio signal and improve universality.
In order to solve the above technical problem, the present application provides a diagnosis system for a horn state, including:
the power amplifier is connected with the loudspeaker and used for amplifying the signal and outputting the signal to the loudspeaker;
a current detection unit connected to the power amplifier, for detecting a current signal of the horn connected to the power amplifier;
the audio output component is connected with the power amplifier and is used for outputting an audio signal to the power amplifier after receiving a diagnosis instruction;
and the MCU is connected with the current detection component and the audio output component and is used for outputting the diagnosis instruction to the audio output component during diagnosis and determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process.
Preferably, the MCU is specifically configured to:
after the control equipment is powered on, acquiring the current signal as a static current signal of the loudspeaker;
sending the diagnostic instruction to the audio output component;
acquiring a current signal to serve as a working current signal of the loudspeaker;
if the current value of the working current signal is smaller than or equal to the current value of the static current signal, determining that the loudspeaker state is an unaccessed state;
if the current value of the working current signal is larger than that of the static current signal, and the difference value between the current value of the working current signal and the theoretical current value is smaller than a first preset value, determining that the loudspeaker state is a normal access state; wherein the theoretical current value is a current value corresponding to the frequency of the audio signal;
if the difference value between the current value of the working current signal and the theoretical current value is larger than a second preset value, determining that the horn state is a short-circuit state;
wherein the first preset value is smaller than the second preset value.
Preferably, the loudspeaker further comprises a state indicating component, wherein the state indicating component is connected with the MCU and used for indicating different loudspeaker states according to the control of the MCU.
Preferably, the status indicating means is an LED.
Preferably, the audio output part includes an audio source generating part, a multimedia processor, and an audio decoder.
Preferably, the frequency of the audio signal is a fixed value.
In order to solve the above technical problem, the present application provides a method for diagnosing a horn state, which is applied to the diagnostic system, and the method includes:
outputting a diagnosis instruction to an audio output component at the time of diagnosis;
acquiring a current signal detected by a current detection component;
and determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process.
In order to solve the above technical problem, the present application provides a diagnostic apparatus for a horn state, which is applied to the diagnostic system, and the apparatus includes:
the output module is used for outputting a diagnosis instruction to the audio output component during diagnosis;
the acquisition module is used for acquiring the current signal detected by the current detection component;
and the determining module is used for determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process.
In order to solve the above technical problem, the present application provides an electronic device, including a memory for storing a computer program;
and the processor is used for realizing the steps of the diagnosis method of the horn state when executing the computer program.
In order to solve the above technical problem, the present application provides a computer-readable storage medium having a computer program stored thereon, where the computer program is executed by a processor to implement the steps of the method for diagnosing a horn state.
The diagnosis system of loudspeaker state that this application provided includes power amplifier, current detection part, audio output part and MCU. The power amplifier is connected with the loudspeaker and used for amplifying the signal and outputting the signal to the loudspeaker; the current detection component is connected with the power amplifier and is used for detecting a current signal of the loudspeaker connected with the power amplifier; the audio output component is connected with the power amplifier and used for outputting an audio signal to the power amplifier after receiving the diagnosis instruction; and the MCU is connected with the current detection component and the audio output component and is used for outputting a diagnosis instruction to the audio output component during diagnosis and determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process. By adopting the technical scheme, in the diagnosis process, the current signals are collected, so that the output quality of the audio signals is not influenced, and the loudspeaker has no relation with a physical interface of the loudspeaker, so that the loudspeaker can be suitable for loudspeakers in various forms, and the universality is good.
The horn state diagnosis method, apparatus, TBOX, and computer storage medium provided by the present application correspond to the above-described methods, and the effects are the same as described above.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a structural diagram of a horn state diagnosis system according to an embodiment of the present disclosure;
fig. 2 is a flowchart illustrating a process of determining a speaker state by an MCU according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a method for diagnosing a horn state according to an embodiment of the present disclosure;
fig. 4 is a structural diagram of a horn state diagnosis device according to an embodiment of the present disclosure;
fig. 5 is a structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the present application.
The core of the application is to provide a system, a method, a device and a medium for diagnosing the state of a horn.
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings.
Fig. 1 is a structural diagram of a horn state diagnosis system according to an embodiment of the present disclosure. As shown in fig. 1, the system includes:
and the power amplifier 10 is connected with the loudspeaker and used for amplifying the signals and outputting the signals to the loudspeaker.
The current detection unit 11 is connected to the power amplifier and detects a current signal of a horn connected to the power amplifier.
And the audio output component 12 is connected with the power amplifier and is used for outputting an audio signal to the power amplifier after receiving the diagnosis instruction.
And the MCU13 is connected with the current detection component and the audio output component and is used for outputting a diagnosis instruction to the audio output component during diagnosis and determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process.
In this embodiment, the type of the power amplifier is not limited, and the amplification factor is not limited, and the power amplifier amplifies the power of the audio signal output by the audio output component, and outputs the audio signal to the speaker, and the audio signal is played through the speaker. The horn is used as a load, the current signal of the power amplifier is changed along with the load under the static state and the operation, so the static current signal and the operation current signal are different for the horn used as the load, and the current signal of the horn can be determined by detecting the current signal of the power amplifier through the current detection part. The type of the current detection device is not limited, but considering that the current signal is generally weak and belongs to the milliampere level, the current detection device of the milliampere level is generally selected for the accuracy of data.
The audio output component mainly provides audio signals, and preferably comprises a sound source generating component, a multimedia processor and an audio decoder.
It should be noted that the diagnostic process includes two parts before and during diagnosis, so that the current signal changes during the diagnostic process, that is, before and during diagnosis. It will be appreciated that the quiescent current signal corresponds to the diagnosis, and the operating current signal corresponds to the diagnosis, and the horn state can be determined by the change of the quiescent current signal and the operating current signal. In the present application, the current signal mainly considers the amplitude, i.e. the current value, so that the determination of the horn state by the MCU according to the change of the current signal during the diagnosis process is mainly determined according to the change of the current value.
In addition, the MCU may initiate a diagnosis event when it is powered on, or at a certain fixed frequency, and usually, the diagnosis event is initiated as soon as it is powered on, and then initiated again at a certain frequency.
The diagnosis system of loudspeaker state that this application embodiment provided includes power amplifier, current detection part, audio output part and MCU. The power amplifier is connected with the loudspeaker and used for amplifying the signal and outputting the signal to the loudspeaker; the current detection component is connected with the power amplifier and is used for detecting a current signal of a loudspeaker connected with the power amplifier; the audio output component is connected with the power amplifier and used for outputting an audio signal to the power amplifier after receiving the diagnosis instruction; and the MCU is connected with the current detection part and the audio output part and is used for outputting a diagnosis instruction to the audio output part during diagnosis and determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process. By adopting the technical scheme, in the diagnosis process, the current signals are collected, so that the output quality of the audio signals is not influenced, and the loudspeaker has no relation with a physical interface of the loudspeaker, so that the loudspeaker can be suitable for loudspeakers in various forms, and the universality is good.
On the basis of the above embodiment, the MCU specifically determines the horn state through the following steps. Fig. 2 is a flowchart of determining a speaker state by an MCU according to an embodiment of the present application. As shown in fig. 2, includes:
s10: after the control equipment is powered on, acquiring a current signal as a static current signal of the loudspeaker;
s11: sending a diagnosis instruction to an audio output component;
s12: acquiring a current signal to be used as a working current signal of the loudspeaker;
s13: judging whether the current value of the working current signal is less than or equal to the current value of the static current signal; if yes, go to S14, if no, go to S15;
s14: determining that the loudspeaker state is an unaccessed state;
s15: judging whether the current value of the working current signal is larger than that of the static current signal or not, and the difference value between the current value of the working current signal and the theoretical current value is smaller than a first preset value, if so, entering S16, otherwise, entering S17;
s16: determining that the loudspeaker state is a normal access state;
s17: judging whether the difference value between the current value of the working current signal and the theoretical current value is larger than a second preset value or not, and if so, entering S18;
s18: the horn state is determined to be a short circuit state.
In other words, in S15, if the current value of the operating current signal is closer to the theoretical current value, it is determined that the horn is in the normal connection state, so the first preset value is smaller, for example, 20mA, and in S17, if the current value of the operating current signal is far greater than the theoretical current value, that is, the difference between the two values is greater than the second preset value, it is determined that the horn is in the short circuit state, so the second preset value is larger, for example, 1000 mA.
It should be noted that steps S13-S18 are only one of the determination sequences, and for example, S17 may be performed first as long as the following conditions are satisfied.
1) If the current value of the working current signal is smaller than or equal to the current value of the static current signal, determining that the loudspeaker state is an unaccessed state;
2) if the current value of the working current signal is larger than that of the static current signal, and the difference value between the current value of the working current signal and the theoretical current value is smaller than a first preset value, determining that the loudspeaker state is a normal access state; wherein the theoretical current value is a current value corresponding to the frequency of the audio signal;
3) and if the difference value between the current value of the working current signal and the theoretical current value is greater than a second preset value, determining that the horn state is a short-circuit state.
As a preferred embodiment, in order to improve the accuracy of the diagnosis, the frequency of the audio signal is a fixed value. The theoretical current value corresponding to the fixed value is also fixed, so that the accuracy is higher in the judgment process.
On the basis of the above embodiment, in order to facilitate the examination of the diagnosis result, the loudspeaker further comprises a state indicating component connected with the MCU and used for indicating different loudspeaker states according to the control of the MCU.
Preferably, as shown in fig. 1, the status indication component is an LED14, and it is understood that other forms of indication besides the LED may be adopted, such as a terminal device connected to TBOX, and the like, and the description of this embodiment is omitted. In addition, the LED may be displayed in 3 different colors, for example, red for short circuit status, blue for non-access status, and green for normal access status.
In the foregoing embodiments, a diagnosis system of a horn state is described in detail, and the present application also provides a method embodiment corresponding to the diagnosis system of the horn state. The method may be implemented based on an MCU. Fig. 3 is a flowchart of a method for diagnosing a horn state according to an embodiment of the present disclosure. As shown in fig. 3, the method includes:
s20: outputting a diagnosis instruction to an audio output component at the time of diagnosis;
s21: acquiring a current signal detected by a current detection component;
s22: and determining the state of the horn according to the change condition of the current signal in the diagnosis process.
Since the steps in the above embodiments are described in detail, the description of the embodiments is omitted. It should be noted that the above steps are not strictly sequential, and for example, step S21 needs to be executed before and during diagnosis.
According to the horn state diagnosis method provided by the embodiment of the application, firstly, a diagnosis instruction is output to the audio output component during diagnosis, the current signal detected by the current detection component is obtained, and finally the horn state is determined according to the change condition of the current signal in the diagnosis process. By adopting the technical scheme, in the diagnosis process, the current signals are collected, so that the output quality of the audio signals is not influenced, and the loudspeaker has no relation with a physical interface of the loudspeaker, so that the loudspeaker can be suitable for loudspeakers in various forms, and the universality is good.
Corresponding to the above method embodiments, the present application also provides an embodiment of a horn state diagnosis apparatus. Fig. 4 is a structural diagram of a horn state diagnosis device according to an embodiment of the present application. As shown in fig. 4, the apparatus includes:
an output module 20, configured to output a diagnosis instruction to an audio output component at the time of diagnosis;
an obtaining module 21, configured to obtain a current signal detected by the current detecting component;
and the determining module 22 is used for determining the state of the horn according to the change condition of the current signal in the diagnosis process.
According to the diagnosis device for the loudspeaker state, firstly, a diagnosis instruction is output to the audio output component during diagnosis, the current signal detected by the current detection component is obtained, and finally the loudspeaker state is determined according to the change condition of the current signal in the diagnosis process. By adopting the technical scheme, in the diagnosis process, the current signals are collected, so that the output quality of the audio signals is not influenced, and the loudspeaker has no relation with a physical interface of the loudspeaker, so that the loudspeaker can be suitable for loudspeakers in various forms, and the universality is good.
In addition, an electronic device is further provided in the embodiments of the present application, and fig. 5 is a structural diagram of an electronic device provided in the embodiments of the present application. As shown in fig. 5, includes a memory 30 for storing a computer program; a processor 31 for implementing the steps of the method for diagnosing the horn state provided in the above embodiment when executing the computer program.
The processor 31 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and the like. The processor 31 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 31 may also include a main processor and a coprocessor, where the main processor is a processor for processing data in a wake-up state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 31 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 31 may further include an AI (Artificial Intelligence) processor for processing a calculation operation related to machine learning.
Memory 30 may include one or more computer-readable storage media, which may be non-transitory. Memory 30 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In this embodiment, the memory 30 is at least used for storing the following computer program 301, wherein after the computer program is loaded and executed by the processor 31, the relevant steps of the horn state diagnosis method disclosed in any one of the foregoing embodiments can be implemented. In addition, the resources stored by the memory 30 may also include an operating system 302, data 303, and the like, and the storage may be transient storage or permanent storage. Operating system 302 may include Windows, Unix, Linux, etc. Data 303 may include, but is not limited to, current values, etc.
The system, method and device for diagnosing horn state of the present application can be applied to various electronic devices, and in a preferred embodiment, we take the application to a TBOX vehicle-mounted box as an example.
In some embodiments, the TBOX cartridge may further comprise a display screen 32, an input/output interface 33, a communication interface 34, a power source 35, and a communication bus 36.
Those skilled in the art will appreciate that the configuration shown in FIG. 5 does not constitute a limitation on TBOX, and may include more or fewer components than shown.
The TBOX provided by the embodiment of the application comprises a memory and a processor, wherein the processor can realize the following method when executing the program stored in the memory: firstly, a diagnosis instruction is output to the audio output component during diagnosis, a current signal detected by the current detection component is obtained, and finally, the state of the loudspeaker is determined according to the change condition of the current signal in the diagnosis process. By adopting the technical scheme, in the diagnosis process, the current signal is acquired, so that the output quality of the audio signal is not influenced, and the loudspeaker has no relation with a physical interface of the loudspeaker, so that the loudspeaker can be suitable for loudspeakers in various forms, and the universality is good.
Finally, the application also provides a corresponding embodiment of the computer readable storage medium. The computer readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps as described in the above-mentioned method embodiments.
It is to be understood that if the method in the above embodiments is implemented in the form of software functional units and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially or partially implemented in the form of a software product, which is stored in a storage medium and performs all or part of the steps of the method according to the embodiments of the present application, or all or part of the technical solution. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The present disclosure provides systems, methods, apparatuses, and media for diagnosing horn states in detail. The embodiments in the specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (10)
1. A horn condition diagnostic system, comprising:
the power amplifier is connected with the loudspeaker and used for amplifying the signal and outputting the signal to the loudspeaker;
the current detection component is connected with the power amplifier and is used for detecting a current signal of the loudspeaker connected with the power amplifier;
the audio output component is connected with the power amplifier and is used for outputting an audio signal to the power amplifier after receiving a diagnosis instruction;
and the MCU is connected with the current detection component and the audio output component and used for outputting the diagnosis instruction to the audio output component during diagnosis and determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process.
2. The horn state diagnostic system of claim 1, wherein the MCU is specifically configured to:
after the control equipment is powered on, acquiring the current signal as a static current signal of the loudspeaker;
sending the diagnostic instruction to the audio output component;
acquiring a current signal to serve as a working current signal of the loudspeaker;
if the current value of the working current signal is smaller than or equal to the current value of the static current signal, determining that the loudspeaker state is an unaccessed state;
if the current value of the working current signal is larger than that of the static current signal, and the difference value between the current value of the working current signal and the theoretical current value is smaller than a first preset value, determining that the loudspeaker state is a normal access state; wherein the theoretical current value is a current value corresponding to the frequency of the audio signal;
if the difference value between the current value of the working current signal and the theoretical current value is larger than a second preset value, determining that the horn state is a short-circuit state;
wherein the first preset value is smaller than the second preset value.
3. The system for diagnosing the state of the horn of claim 1, further comprising a state indicating component connected to the MCU for indicating different states of the horn according to the control of the MCU.
4. The horn status diagnostic system of claim 1, wherein the status indicating component is an LED light emitting diode.
5. The system of claim 1, wherein the audio output component comprises an audio source generation component, a multimedia processor, and an audio decoder.
6. The system of any one of claims 1 to 5, wherein the frequency of the audio signal is a fixed value.
7. A method for diagnosing a horn state, applied to the diagnosis system according to any one of claims 1 to 6, comprising:
outputting a diagnosis instruction to an audio output component at the time of diagnosis;
acquiring a current signal detected by a current detection component;
and determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process.
8. A horn state diagnosis apparatus applied to the diagnosis system according to any one of claims 1 to 6, the apparatus comprising:
the output module is used for outputting a diagnosis instruction to the audio output component during diagnosis;
the acquisition module is used for acquiring the current signal detected by the current detection component;
and the determining module is used for determining the state of the loudspeaker according to the change condition of the current signal in the diagnosis process.
9. An electronic device, comprising a memory for storing a computer program;
a processor for implementing the steps of the method of diagnosing a horn state of claim 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of diagnosing a horn state according to claim 7.
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| CN112356774A (en) * | 2020-09-24 | 2021-02-12 | 湖北亿咖通科技有限公司 | Vehicle-mounted entertainment system for sounding warning sound and function diagnosis method thereof |
| CN114604173A (en) * | 2020-12-09 | 2022-06-10 | 华为技术有限公司 | Detection system, T-BOX and vehicle |
| CN114604173B (en) * | 2020-12-09 | 2024-05-17 | 华为技术有限公司 | Detection system, T-BOX and vehicle |
| CN113630707A (en) * | 2021-08-03 | 2021-11-09 | 华强方特（深圳）智能技术有限公司 | Sound system detection method, device, equipment, storage medium and sound system |
| CN117939383A (en) * | 2024-02-08 | 2024-04-26 | 上海傅里叶半导体有限公司 | Speaker fault detection circuit and method and electronic equipment |
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