KR20120059973A

KR20120059973A - Method Detecting sound output of AV/Audio Using Unified Diagnostic Services protocol

Info

Publication number: KR20120059973A
Application number: KR1020100121501A
Authority: KR
Inventors: 임태식
Original assignee: 현대모비스 주식회사
Priority date: 2010-12-01
Filing date: 2010-12-01
Publication date: 2012-06-11

Abstract

PURPOSE: A method for detecting abnormality of AV(Audio Visual)/Audio sound outputs using an UDS(Unified Diagnostic Services) protocol is provided to reduce operation time and personnel costs by performing process automation. CONSTITUTION: A computer transmits a selected diagnosis mode entering command to an AV(Audio Visual)/Audio(S200). The AV/Audio enters a diagnosis mode according to a diagnostic mode entering command(S210). The computer transmits a sound outputting command to the AV/Audio(S220). The AV/Audio outputs a voice signal of a preset specific frequency included in a received outputting sound command during a predetermined period(S230). The computer collects an outputted voice signal(S240). The computer compares a frequency waveform of the voice signal outputted from each speaker with a preset specific frequency waveform(S250). A diagnostic mode clear command of the AV/Audio is outputted(S280).

Description

Method for detecting abnormality of AV / AWDIO sound output using WDS protocol {Method Detecting sound output of AV / Audio Using Unified Diagnostic Services protocol}

The present invention relates to a method and apparatus for detecting an abnormality of an AV sound output using the UDS protocol, and more particularly, to a method and apparatus for detecting a defect related to an AV sound output by applying a diagnostic specification of the UDS protocol. .

In general, the operator's intuition is used to determine whether there is a defect related to the AV / Audio sound output at the factory line. In other words, the factory operator directly checks whether the sound output is abnormal through the operation of AV / Audio and judges the sound output defect.

However, since this method is performed through an intuitive method of confirming with the human ear, it is influenced by the skill of the operator. In other words, the operator with high skill can accurately detect whether the sound output is defective, but the inexperienced worker can not accurately detect whether the sound output is defective, which may result in deterioration of the product.

In addition, since the operator has to lift and detect each product directly, it takes a lot of time to check and judge.

The present invention has been made in view of the above problems, and it is possible to reduce the detection time, detect the abnormality of the AV / Audio sound output using the UDS protocol which can accurately detect defects related to the sound output without being affected by the individual's skill level. Its purpose is to provide a method and apparatus.

In order to achieve the above object, the abnormal detection method of the AV / Audio sound output using the UDS (Unified Diagnostic Services) protocol in accordance with an aspect of the present invention, a sound output command to output a voice signal at a set frequency to the UDS protocol According to the transmission to the AV / Audio; And determining the abnormality of the AV / Audio sound output by comparing the frequency of the audio signal output from the AV / Audio corresponding to the transmitted sound output command with a pre-stored waveform of the set frequency.

According to the present invention, it is possible to simplify the process through the construction of the process automation without the operator's operation, judgment in the failure inspection of the sound output.

In particular, process automation has the advantage of reducing work time and labor costs.

1 is a block diagram illustrating a command protocol between a work computer and AV / Audio according to an embodiment of the present invention.
2 is a flowchart illustrating a method of detecting an abnormality of an AV / Audio sound output using the UDS protocol according to an embodiment of the present invention.
3 and 4 are exemplary diagrams for explaining a diagnostic command protocol.
5 is an exemplary diagram for explaining the collection of output sound;
6 is an exemplary diagram for explaining a frequency waveform displayed on a computer.
7 is an exemplary diagram for explaining the case where there is no abnormality in sound output.
8 is an exemplary diagram for explaining a case where an error occurs in sound output.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. And is intended to enable a person skilled in the art to readily understand the scope of the invention, and the invention is defined by the claims. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. It is noted that " comprises, " or "comprising," as used herein, means the presence or absence of one or more other components, steps, operations, and / Do not exclude the addition.

Hereinafter, a method of detecting an abnormality of an AV / Audio sound output using the UDS protocol according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8. 1 is a block diagram illustrating a command protocol between a work computer and AV / Audio according to an embodiment of the present invention, and FIG. 2 is an abnormality of an AV / Audio sound output using the UDS protocol according to an embodiment of the present invention. A flowchart for explaining the detection method. 3 and 4 are exemplary diagrams for explaining the diagnostic command protocol, Figure 5 is an exemplary diagram for explaining the collection of the output sound, Figure 6 is an exemplary diagram for explaining the frequency waveform displayed on the computer. 7 is an exemplary diagram for describing a case where there is no abnormality in sound output, and FIG. 8 is an exemplary diagram for describing a case where there is an abnormality in sound output.

The present invention relates to a process for determining a defect related to sound output of AV / Audio, that is, a computer diagnostic tool. The present invention relates to a defect such as components related to sound output of AV / Audio using the UDS (Unified Diagnostic Service) protocol. It is to judge whether or not. To this end, as shown in FIG. 1, the present invention implements a UDS protocol in which CAN equipment is built in a work computer 100 of a factory and can issue setting commands for a specific frequency and time. The CAN protocol that satisfies the UDS specification is implemented, and a diagnostic function for outputting a voice signal of a specific frequency for a set time is implemented.

The command protocol between the working computer 100 and the AV / Audio 200 is as follows. First, the work computer 100 transmits a sound output request command (sound output failure diagnosis determination request command: 0x31 0x02 uu) to the AV / Audio 200 through the executed diagnostic tool. The AV / Audio 200 transmits the reply data 0x71 0x02 uu on whether sound is output to the work computer 100 in response to the request command from the work computer 100. Where uu is a specific frequency, time, etc.

In more detail, the method of detecting abnormalities of the V / Audio sound output including the above is described. As illustrated in FIG. 2, a diagnostic tool is executed on the computer 100 by a user, and the diagnostic mode is executed through the executed diagnostic tool. When the entry command is selected, the computer 100 transmits the selected diagnostic mode entry command to the AV / Audio 200 (S200).

If the diagnostic mode entry command is received, the AV / Audio 200 enters the diagnostic mode (S210).

When the sound output command is selected by the user through the executed diagnostic tool, the computer 100 transmits the sound output command to the AV / Audio 200 (S220). For example, as shown in FIG. 3, the computer 100 outputs a sound output command (specific pattern display request command, 31 02 64 5) for outputting a voice signal of a predetermined specific frequency for a predetermined time. 200).

When the sound output command is received, the AV / Audio 200 outputs a voice signal of a predetermined specific frequency included in the received sound output command for a predetermined time (S230). For example, as shown in FIG. 4, the AV / Audio 200 transmits reply data 71 02 to the computer 100 according to the received sound output command. When the reply data is received, the computer 100 receives the AV / Audio 200 through the microphones 110a, 110b, 110c, and 110d mounted on the speakers 210a, 210b, 210c, and 210d, as shown in FIG. Create an environment that allows you to record audio signals output from. The AV / Audio 200 outputs a voice signal at a specific frequency received for each time zone received through each speaker 210a, 210b, 210c, or 210d. For example, when the AV / Audio 200 receives a 5 second command of 10 KHz, the AV / Audio 200 receives a specific frequency for 5 seconds in the order of the left speaker 210a, the right speaker 210b, the front speaker 210c, the rear speaker 210d, and the like. Outputs a voice signal.

The computer 100 collects (records) the audio signal output through the microphones 110a, 110b, 110c, and 110d mounted to the speakers 210a, 210b, 210c, and 210d (S240).

The computer 100 compares the frequency waveform of the voice signal output from each speaker 210a, 210b, 210c, and 210d with the waveform of a specific frequency set (S250). For example, the computer 100 outputs a waveform of a specific frequency set to be output to the AV / Audio 200 and outputs from the speakers 210a, 210b, 210c, and 210d and is recorded by the microphones 110a, 110b, 110c, and 110d. Compare the frequency waveform of the audio signal. That is, as shown in FIG. 6, the frequency waveform of the recorded voice signal is analyzed and it is determined whether or not it is similar to the set frequency waveform (requested original frequency waveform).

If the comparison result is matched, the diagnosis success (OK) is displayed as shown in FIG. 7 (S260). If the comparison result is not matched, the diagnosis failure (NG) is displayed as shown in FIG. 8 (S270).

The diagnostic mode release command of the AV / Audio 200 is output (S280).

As described above, the present invention can quickly and accurately determine whether a sound output abnormality of the AV / Audio through the screen on which the diagnostic result is displayed. In addition, the present invention provides a method for identifying parts and functional defects related to sound output through a diagnostic function such as an AMP component in AV / Audio, a connector or peripheral component mounting failure in a part connected to a speaker, and a tuning data error related to equalizing AV / Audio. The process can be automated, saving time.

Although the configuration of the present invention has been described in detail with reference to the preferred embodiments and the accompanying drawings, this is only an example, and various modifications are possible within the scope without departing from the spirit of the present invention. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

100: computer 110: microphone 200: AV / Audio 210: speaker

Claims

In the abnormality detection method of AV / Audio sound output using UDS (Unified Diagnostic Services) protocol,
Transmitting a sound output command for outputting a voice signal at a set frequency to the AV / Audio according to the UDS protocol; And
Determining whether the AV / Audio sound output is abnormal by comparing a frequency of a voice signal output from the AV / Audio corresponding to the transmitted sound output command with a pre-stored waveform of the set frequency;
Abnormality detection method of the AV / Audio sound output comprising a.

The method of claim 1,
And displaying the diagnosis result of the AV / Audio sound output as success or failure according to the determination result.

The method of claim 1, wherein the determining comprises:
Analyzing a frequency of the output voice signal;
Determining that there is no abnormality in the AV / Audio sound output when the previously stored waveform and the analyzed waveform of the frequency are similar within a preset error range; And
Determining that there is an abnormality in the AV / Audio sound output when the pre-stored waveform and the analyzed frequency waveform are similar to each other out of a preset error range.
Abnormality detection method of the AV / Audio sound output comprising a.

The method of claim 1,
When a reply data is received from the AV / Audio in response to the transmitted sound output command, a recording environment is created so that a voice signal to be output through the speaker can be recorded through a microphone mounted on the speaker connected to the AV / Audio. And detecting an abnormality of the AV / Audio sound output.

The method of claim 1,
Executing a diagnostic tool of the AV / Audio; And
Transmitting a diagnostic mode entry command of the AV / Audio according to an operation of the diagnostic tool that is executed;
The transmitting step
Transmitting the sound output command in accordance with the operation of the diagnostic tool executed
Abnormality detection method of AV / Audio sound output.

The method of claim 5,
Transmitting a diagnosis mode release command of the AV / Audio after determining whether the AV / Audio sound output is abnormal; And
And transmitting the diagnosis mode release command by any one of the steps of transmitting the diagnosis mode release command of the AV / Audio according to the operation of the diagnostic tool. .