JP2016116001A - Failure diagnosis method, electronic apparatus, wireless communication device, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a failure diagnosis method, electronic apparatus, wireless communication device, and program that are capable of identifying an acoustic conversion element in which an abnormality has occurred, when it is recognized that the abnormality has occurred in any of acoustic conversion elements.SOLUTION: A wireless communication device 1 comprises microphones 11a, 11b and a speaker 12. The wireless communication device 1 performs a failure diagnosis of comparing a signal level of sound acquired from each of the microphones 11a, 11b with a threshold; and, when a signal level of sound acquired from any microphone is lower than the threshold, outputs test sound from the speaker 12. The wireless communication device determines whether or not the speaker 12 is normal on the basis of a signal level of test sound acquired from a microphone other than a microphone whose signal level is lower than the threshold, of the microphones 11a, 11b; and determines, by using the speaker determined to be normal, whether or not the microphone whose signal level is lower than the threshold is normal.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a failure diagnosis method, an electronic device, a wireless communication device, and a program, and more particularly to failure diagnosis of an acoustic transducer.

  A technique for detecting that a failure has occurred in a microphone or a speaker is known. For example, in the failure diagnosis method described in Patent Document 1, a predetermined test signal composed of digital data of an audible frequency formed in advance is transmitted from a test signal transmission unit to a speaker of a calling device, and the test signal is transmitted to the calling device. The test signal receiving unit receives the signal through the microphone and determines whether the test result obtained by comparing the received test signal with the transmitted test signal is compared with the reference value stored in the determination value storage unit in advance. The determination result is displayed on the display unit.

JP 2000-90373 A

  In the failure diagnosis method described in Patent Document 1, if a test result when a test signal emitted from a speaker is received by a microphone is defective, it is specified whether the speaker is defective or the microphone is defective. Have difficulty.

  An object of the present invention is to provide a failure diagnosis method, an electronic device, a wireless communication device, and a program capable of specifying which acoustic transducer has an abnormality when an abnormality has occurred in the acoustic transducer. It is in.

  Therefore, the present invention provides a failure diagnosis method for an electronic device, which compares a signal level of sound acquired from each of a plurality of microphones included in the electronic device with a predetermined threshold value, and selects any of the plurality of microphones. If the signal level of the sound acquired from the microphone is less than the threshold, a predetermined test sound is output from a specific speaker among at least one speaker included in the electronic device, Whether or not the speaker is normal is determined based on the signal level of the test sound acquired from a microphone other than the microphone whose signal level is less than the threshold, and the speaker determined to be normal is used. Thus, a failure diagnosis method for determining whether or not a microphone whose signal level is less than the threshold is normal is provided.

  In addition, the present invention provides a plurality of microphones, at least one speaker, a comparison unit that compares a signal level of sound acquired from each of the plurality of microphones with a predetermined threshold, and any of the plurality of microphones. A test sound output means for outputting a predetermined test sound from a specific speaker among the at least one speaker, and a signal level of a sound acquired from the microphone is less than the threshold value; It is determined whether or not the speaker is normal based on the signal level of the test sound acquired from a microphone other than the microphone whose signal level is less than the threshold, and the speaker is determined to be normal. A determination means for determining whether or not a microphone whose signal level is less than the threshold is normal using the speaker. Subjected to.

  The present invention also provides a plurality of microphones, at least one speaker, transmission means for transmitting sound input to at least one of the plurality of microphones, and sound acquired from each of the plurality of microphones. Comparing means for comparing the signal level with a predetermined threshold value, and the signal level of sound acquired from any one of the plurality of microphones during transmission by the transmitting means is less than the threshold value A test sound output means for outputting a predetermined test sound from a specific speaker among the at least one speaker, and a plurality of microphones Whether the speaker is normal based on the signal level of the test sound acquired from a microphone other than the microphone whose signal level is less than the threshold value And determining means for determining whether the microphone whose signal level is less than the threshold is normal using the speaker when the speaker is determined to be normal. Providing the device.

  According to another aspect of the invention, there is provided a step of comparing a signal level of sound acquired from each of a plurality of microphones included in the electronic device with a predetermined threshold value on a computer of the electronic device, Outputting a predetermined test sound from a specific speaker among at least one speaker included in the electronic device when a signal level of sound acquired from the microphone is less than the threshold; and Of these, it is determined whether or not the speaker is normal based on the signal level of the test sound acquired from a microphone other than the microphone whose signal level is less than the threshold, and the speaker is determined to be normal. Determining whether or not the microphone whose signal level is less than the threshold is normal using the speaker. To provide a program.

  According to the present invention, it is possible to provide a failure diagnosis method, an electronic device, a wireless communication device, and a program capable of specifying which acoustic conversion element has an abnormality when an abnormality has occurred in the acoustic conversion element. Can do.

FIG. 1 is a block diagram of a configuration of a wireless communication apparatus that is an example of an electronic apparatus according to the first embodiment. FIG. 2 is a block diagram of an example of a functional configuration of the microcontroller according to the first embodiment. FIG. 3 is a flowchart of an example of a failure diagnosis operation in the wireless communication apparatus according to the first embodiment. FIG. 4 is a block diagram of a configuration of a wireless communication apparatus that is an example of an electronic apparatus according to the second embodiment. FIG. 5 is a flowchart of an example of a failure diagnosis operation in the wireless communication apparatus according to the second embodiment. FIG. 6 is a flowchart showing an example of specific processing of step 30 shown in FIG.

Embodiment 1
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of a wireless communication device 1 that is an example of an electronic apparatus according to the present embodiment. The wireless communication device 1 includes a microcontroller 10, microphones 11 a and 11 b that are acoustic conversion elements, a speaker 12 that is an acoustic conversion element, a display device 13, and a PTT (Push to Talk) switch 14. In the following description, when one of the microphones 11a and 11b is not specified, the microphone 11 may be referred to.

  The microcontroller 10 includes a CPU (Central Processing Unit) and a memory (not shown), and controls the wireless communication apparatus 1. For example, the microcontroller 10 may realize various controls by causing the CPU to execute a program stored in the memory. Note that at least part of the processing by the microcontroller 10 may be realized by an electric circuit.

  In the present embodiment, the wireless communication device 1 includes two microphones, a microphone 11a and a microphone 11b. Here, the microphone 11a is a main microphone for mainly acquiring sound emitted by the user of the wireless communication device 1. The microphone 11b is a sub microphone provided for use in noise cancellation processing, and mainly acquires noise around the wireless communication device 1. Sound signals acquired by the microphone 11 a and the microphone 11 b are input to the microcontroller 10. The microcontroller 10 performs noise cancellation processing on the sound signals acquired by the microphone 11a and the microphone 11b, and wirelessly transmits the sound emitted by the user through an antenna (not shown).

  The speaker 12 outputs sound according to a signal wirelessly received by, for example, an antenna (not shown) under the control of the microcontroller 10. Note that the speaker 12 is not limited to the received signal, and may output an alarm sound described later.

  The display device 13 is an LCD (liquid crystal display), for example, and displays information under the control of the microcontroller 10. The display device 13 is not limited to a display. For example, the display device 13 may present information according to a light emission state such as an LED.

  The PTT switch 14 is a switch for switching whether or not to transmit an audio signal by a transmission / reception unit 100 described later. That is, the PTT switch 14 switches the communication state of the wireless communication apparatus 1 to either a transmission state in which a transmission / reception unit 100 described later transmits an audio signal or a non-transmission state in which the transmission / reception unit 100 does not transmit an audio signal. The transmission state is also called a call state. When the PTT switch 14 is pressed, the state of the wireless communication device 1 is switched from the non-transmission state to the transmission state, whereby the audio signal is transmitted.

  Next, a specific configuration for failure diagnosis in the wireless communication device 1 will be described. FIG. 2 is a block diagram illustrating an example of a functional configuration of the microcontroller 10. As described above, part or all of the configuration illustrated in FIG. 2 may be realized by the CPU executing a program or may be realized by an electric circuit.

  As shown in FIG. 2, the microcontroller 10 includes a transmission / reception unit 100, a first comparison unit 101, a number counting unit 102, a test sound output unit 103, a second comparison unit 104, a failure determination unit 105, and a notification unit 106. Have

  The transmission / reception unit 100 transmits sound input to at least one of the plurality of microphones 11. In this Embodiment, the transmission / reception part 100 performs a noise cancellation process about the signal of the sound acquired with the microphone 11a and the microphone 11b, and transmits the audio | voice which the user uttered to another communication apparatus. The transmission / reception unit 100 transmits an audio signal to another communication device when the PTT switch 14 is pressed. Moreover, the transmission / reception part 100 receives the audio | voice signal transmitted wirelessly from another communication apparatus. However, the transmission / reception unit 100 does not perform reception processing while the PTT switch 14 is pressed. The transceiver 100 outputs the received audio signal to the speaker 12 after decoding it.

  The first comparison unit 101 compares the signal level of the sound acquired from each of the plurality of microphones 11a and 11b with a predetermined threshold value. Specifically, the first comparison unit 101 determines whether or not the sound pressure value obtained by AD converting the voltage of the signal acquired by the microphone 11a when the PTT switch 14 is pressed is equal to or greater than a predetermined threshold Th1a. Determine. In addition, the first comparison unit 101 also applies a sound pressure value obtained by AD-converting the voltage of the signal acquired by the microphone 11b to the sound acquired by the microphone 11b when the PTT switch 14 is pressed. It is determined whether or not a predetermined threshold Th1b or more. Note that the threshold Th1a and the threshold Th1b are set to be sufficiently lower than the sound pressure values acquired from the plurality of microphones 11a and 11b in a normal state due to the sound emitted in a normal use environment. Here, the threshold Th1a and the threshold Th1b may be the same or different. The threshold values Th1a and Th1b are stored in advance in a memory (not shown) of the microcontroller 10, for example.

  For example, the first comparison unit 101 compares a signal level in a range of 300 Hz to 3 KHz with a threshold value. Specifically, a signal obtained by AD converting the voltage of the signal acquired from each of the microphones 11 is converted into an absolute value, and a value obtained by integrating for a predetermined period is used as a sound pressure value and compared with a threshold value. In the first comparison unit 101, it is desirable that the signal level (sound pressure value) obtained from each microphone 11 and the threshold value are compared at the same timing. The first comparison unit 101 notifies the number counting unit 102 of the comparison result.

  The number counting unit 102 counts the number of times that any of the signal levels obtained by the respective microphones 11 at the same timing is determined to be less than the threshold value. The number counting unit 102 manages the count value for each microphone 11. That is, the count counter 102 counts as a count value for the microphone 11a when the signal level for the microphone 11a is less than the threshold value, and counts for the microphone 11b when the signal level for the microphone 11b is less than the threshold value. Count as. In addition, when the count value is equal to or greater than a predetermined value, the number counting unit 102 is in a temporary abnormal state with respect to the microphone 11 of which the number of times determined to be less than the threshold is equal to or greater than the predetermined number. This is notified to the test sound output unit 103, the second comparison unit 104, and the notification unit 106. That is, the number counting unit 102 indicates that a certain microphone is in a temporarily abnormal state when the number of times that the first comparison unit 101 determines that the signal level is less than the threshold is greater than or equal to a predetermined number. Notify the test sound output unit 103 or the like. Here, the predetermined number of times is an arbitrary number equal to or greater than 2, and can be arbitrarily set by a user or the like.

  The number counting unit 102 counts the number of times for any microphone 11 when the signal level is determined to be less than the threshold value for all the microphones 11 or when the signal level is determined to be equal to or greater than the threshold value for all microphones 11. It is configured not to. That is, when the PTT switch 14 is pressed, the number counting unit 102 determines that the signal level for the microphone 11a is less than the threshold and the signal level for the microphone 11b is also less than the threshold, and the signal level for the microphone 11a is When the signal level is equal to or higher than the threshold value and the signal level for the microphone 11b is equal to or higher than the threshold value, the number counting unit 102 is configured not to count the number of times for both the microphone 11a and the microphone 11b. With this configuration, it is possible to prevent the microphone 11a and the microphone 11b from being erroneously determined to be in a temporary abnormal state when the PTT switch 14 is pressed in a silent environment or in a state where there is no failure in the microphone. When the count value reaches a predetermined value due to one of the microphones 11, the temporarily abnormal microphone is clear. However, the present invention is not limited to this, and the total count of both microphones may reach the count value. In this case, any of the microphones 11 may be in a temporary abnormal state. The determination of whether or not the temporary abnormality state is performed by the number counting unit 102 is hereinafter referred to as temporary abnormality determination.

  The test sound output unit 103 outputs a predetermined test sound from the speaker 12 when the signal level of the sound acquired from any one of the plurality of microphones 11 is less than the threshold value. In the present embodiment, the test sound output unit 103 determines in advance that the signal level of the sound acquired from any one of the plurality of microphones 11 is less than the threshold in accordance with the notification from the number counting unit 102. If the number of times is greater than or equal to the number of times, a test sound is output from the speaker 12.

  However, the test sound output unit 103 may output the test sound from the speaker 12 regardless of the number of times that the signal level is less than the threshold value. That is, the test sound output unit 103 may be configured to output the test sound when the signal level of the sound acquired from any one of the plurality of microphones 11 is less than the threshold even once, or wirelessly. You may comprise so that the test sound output part 103 may output a test sound by operation of the operator of the communication apparatus 1. FIG. If the signal level of the sound acquired from any one of the plurality of microphones 11 is less than the threshold even once, when the test sound output unit 103 outputs the test sound, the number counting unit 102 is omitted, One comparison unit 101 may be configured to identify a microphone in a temporary abnormal state.

  When outputting the test sound, the test sound output unit 103 notifies the second comparison unit 104 that the test sound is output. The test sound is, for example, a sound having a predetermined frequency. The test sound output unit 103 may sequentially output sounds having a plurality of predetermined frequencies (for example, 300 Hz, 1 kHz, 3 kHz). Further, the test sound output unit 103 may output while sweeping all frequencies in a predetermined frequency band (for example, 300 Hz to 3 kHz).

  The second comparison unit 104 compares the signal level of the test sound acquired from the microphone 11 with a predetermined threshold value. The determination performed by the second comparison unit 104 is hereinafter referred to as normal determination. The 2nd comparison part 104 compares the signal level of the said test sound acquired from the microphone which has not been determined with the temporary abnormal state among the microphones 11 with a predetermined threshold value. In addition, the second comparison unit 104 compares the signal level of the test sound acquired from the microphone 11 determined to be in the temporary abnormal state with a predetermined threshold value.

  Specifically, the second comparison unit 104 determines whether or not the sound pressure value of the test sound acquired from the microphone 11 is within a predetermined threshold range. The sound pressure value is a value obtained by AD-converting the voltage of the signal from the microphone, converting it to an absolute value, and integrating it for a predetermined period, as in the case of the provisional abnormality determination. Furthermore, the second comparison unit 104 notifies the failure determination unit 105 of the determination result.

  Here, the second comparison unit 104 uses, for example, a threshold Th2a for the microphone 11a and a threshold Th2b for the microphone 11b. Note that the threshold value may be provided in advance for each frequency of the test sound output from the test sound output unit 103. The threshold values Th2a and Th2b are values obtained from the sound pressure value when the test sound is acquired with the microphone in a normal state, and are stored in a memory (not shown) of the microcontroller 10, for example. The threshold values Th2a and Th2b stored in the memory are stored as the sound pressure value of the test sound itself, and when the second comparison unit 104 compares, the threshold values Th2a and Th2b are determined to be normal if within a predetermined range with respect to the threshold May be. Of course, for the threshold values Th2a and Th2b, the sound pressure value of the test sound itself is not recorded, but the upper limit value and the lower limit value of each threshold value may be determined and stored from the sound pressure value when the test sound is acquired. Good. The storage of the threshold value in the memory is not limited to when the wireless communication device 11 is manufactured. For example, it may be possible to rewrite the threshold when exchanging microphones or speakers.

  The failure determination unit 105 determines that the speaker is normal when the sound pressure value is within a predetermined range with respect to the threshold value in the normal determination stage, and the microphone in which the temporary abnormality is detected in the temporary abnormality determination stage is defective. It is determined whether or not. The determination performed by the failure determination unit 105 is hereinafter referred to as failure determination. Specifically, the failure determination unit 105 compares the signal level of the test sound acquired from the second comparison unit 104 from the microphone 11 that has not been determined to be in the temporary abnormal state with respect to a predetermined threshold value. When it is notified that it is within the predetermined range, it is determined that the speaker 12 is normal. In addition, the failure determination unit 105 determines whether the signal level of the test sound acquired from the second comparison unit 104 from the microphone 11 that has not been determined to be in the temporary abnormal state is within a predetermined range with respect to a predetermined threshold value. If the microphone is not determined to be in the temporary abnormal state, it is determined that the microphone is normal.

  Further, the failure determination unit 105 determines from the second comparison unit 104 that the signal level of the test sound acquired from the microphone 11 that has not been determined to be in the temporary abnormal state is within a predetermined range with respect to a predetermined threshold value. When it is notified that it is outside, it is determined that the speaker 12 is abnormal. That is, in this case, the failure determination unit 105 determines that the speaker 12 has failed.

  Moreover, the failure determination part 105 determines whether the microphone determined to be a temporary abnormal state is normal using the speaker 12 determined to be normal. Specifically, the failure determination unit 105 determines in advance the signal level of the test sound from the normal speaker 12 obtained from the second comparison unit 104 from the microphone 11 determined to be in the temporary abnormal state. If it is notified that the threshold value is within a predetermined range, the microphone determined to be in the temporary abnormal state is determined to be normal. In addition, the signal level of the test sound from the normal speaker 12 acquired from the second comparison unit 104 from the microphone 11 determined to be in the temporary abnormal state is within a predetermined range with respect to a predetermined threshold value. When notified that it is outside, it is determined that the microphone determined to be in the temporary abnormal state is abnormal. That is, in this case, the failure determination unit 105 determines that the microphone determined to be in the temporary abnormal state has failed.

  If the failure determination unit 105 determines that any of the plurality of microphones 11 and the speaker 12 is defective, the failure determination unit 105 notifies the notification unit 106.

  The notification unit 106 performs an alert based on the notification from the failure determination unit 105. For example, the notification unit 106 identifies a failure determined among the plurality of microphones 11 and the speaker 12 and notifies the failure. Specifically, when the failure determination unit 105 determines that the microphone 11a is abnormal, the notification unit 106 displays and outputs on the display device 13 that the microphone 11a has failed. Further, when the failure determination unit 105 determines that the microphone 11b is abnormal, the notification unit 106 displays and outputs on the display device 13 that the microphone 11b has failed. Further, when the failure determination unit 105 determines that the speaker 12 is abnormal, the notification unit 106 displays and outputs on the display device 13 that the speaker 12 has failed. Further, the notification unit 106 performs an alert according to the notification from the number counting unit 102. For example, the notification unit 106 may display and output on the display device 13 that the test for failure diagnosis is started, or display and output on the display device 13 that the acoustic transducer element in the temporarily abnormal state exists. Also good. The notification unit 106 is not limited to the display device 13 and may be notified by an alarm sound or the like through the speaker 12.

  Although it has been explained mainly in order that one of the microphones 11 has failed, either of the microphones 11 is in a normal state or one of the microphones 11 is normal and the other is abnormal due to one test sound output. It is also possible to simultaneously determine whether or not both of the microphones 11 are abnormal. The basis of this failure determination is that when at least one microphone is normal and the signal level of the test sound is within the threshold range, the speaker that has generated the test sound is normal, and the speaker that has been made normal It is said that the normal judgment of the microphone using is reliable.

  Therefore, it may not be known at the temporary abnormality determination stage which abnormality of the microphone 11 is detected, and may be a trigger for shifting to the normal determination stage. This is because it is possible to determine which microphone has failed and which speaker has failed in the subsequent failure determination stage.

  Next, operations related to failure diagnosis will be described. FIG. 3 is a flowchart illustrating an example of an operation related to failure diagnosis in the wireless communication device 1.

  In step 10 (S10), the transmission / reception unit 100 and the first comparison unit 101 monitor whether or not the PTT switch 14 is pressed. Until the PTT switch 14 is pressed, the standby state of waiting for the PTT switch 14 to be pressed continues (No in S10). When the transmission / reception unit 100 and the first comparison unit 101 detect pressing of the PTT switch 14 (Yes in S10), the process proceeds to step 11.

  In step 11 (S11), the communication state of the wireless communication device 1 is switched to the call state, and transmission by the transmission / reception unit 100 is performed. After step 11, the process proceeds to step 12.

  In step 12 (S12), the first comparison unit 101 determines whether or not the sound pressure value of the signal level of the sound acquired by the microphone 11a is greater than or equal to a predetermined threshold value. In addition, the first comparison unit 101 determines whether or not the sound pressure value of the sound acquired by the microphone 11b is equal to or greater than a predetermined threshold value. Furthermore, the number counting unit 102 determines that the sound pressure value of the sound acquired by the microphone 11b is determined by the first comparison unit 101 when the sound pressure value of the sound acquired by the microphone 11a is less than a predetermined threshold value. If it is equal to or greater than a predetermined threshold, the count value for the microphone 11a is increased by one. The number counting unit 102 determines that the sound pressure value of the sound acquired by the microphone 11b is less than a predetermined threshold value by the first comparison unit 101, and the sound pressure value of the sound acquired by the microphone 11a. Is equal to or greater than a predetermined threshold, the count value for the microphone 11b is increased by one.

  In step 12, if the signal level for the microphone 11a is less than the threshold and the signal level for the microphone 11b is also less than the threshold, the signal level for the microphone 11a is greater than or equal to the threshold, and the microphone 11b. When the signal level for the signal is also equal to or higher than the threshold, the number counting unit 102 does not increase the count value. After step 12, the process proceeds to step 13.

  In step 13 (S13), the transmission / reception unit 100 and the first comparison unit 101 monitor whether or not the pressing of the PTT switch 14 is released. The call state is continued until the PTT switch 14 is released (No in S13). If the release of the PTT switch 14 is detected to be released (Yes in S13), the process proceeds to step 14.

  In step 14 (S14), as the pressing of the PTT switch 14 ends, the communication state of the wireless communication device 1 returns to the non-transmission state, and the transmission by the transmission / reception unit 100 ends. After step 14, the process proceeds to step 15.

  In step 15 (S15), the number counting unit 102 determines whether or not the count value for each microphone 11 is equal to or greater than a predetermined value. If the count value is equal to or greater than the predetermined value, the process proceeds to step 16, and if the count value is less than the predetermined value, the process returns to step 10. When the count value of the microphone 11a is equal to or greater than a predetermined value, the number counting unit 102 notifies the test sound output unit 103, the second comparison unit 104, and the notification unit 106 that the microphone 11a is in a temporary abnormal state. To do. In addition, when the count value of the microphone 11b is equal to or greater than a predetermined value, the number counting unit 102 indicates that the microphone 11b is in a temporary abnormal state, the test sound output unit 103, the second comparison unit 104, and the notification unit 106. Notify

  In the present embodiment, as described above, the predetermined value is a value of 2 or more, but if the predetermined value is 1, it is determined to be a temporary abnormal state regardless of the number of times. It becomes.

  In step 16 (S16), the notification unit 106 performs an alert. Specifically, for example, the notification unit 106 displays and outputs on the display device 13 that there is an acoustic conversion element in a temporarily abnormal state.

  In step 17 (S17), the test sound output unit 103 notifies the second comparison unit 104 that the test sound is to be output, and outputs a predetermined test sound from the speaker 12. As described above, in the present embodiment, the test sound output unit 103 determines whether the signal level of sound acquired from any one of the plurality of microphones 11 while the transmission by the transmission / reception unit 100 is being performed is a threshold value. When the accumulation of the number of times less than the number of times becomes equal to or greater than a predetermined number, a predetermined test sound is output from the speaker 12.

  In step 18 (S18), the second comparison unit 104 compares the signal level of the test sound acquired from the microphone 11 that has not been determined to be in the temporary abnormal state with a predetermined threshold value, and determines the determination result. The failure determination unit 105 is notified. If the signal level is outside the predetermined range of the predetermined threshold (No in step 19 (S19)), the process proceeds to step 20. When the signal level is within a predetermined range of a predetermined threshold (Yes in Step 19), the failure determination unit 105 determines that the speaker 12 and the microphone that has not been determined to be in the temporary abnormal state are normal, The process proceeds to step 21.

  In step 20 (S20), failure determination section 105 determines that the signal level of the test sound acquired from the microphone that has not been determined as a temporary abnormal state from second comparison section 104 is outside the predetermined threshold range. It is determined that the speaker 12 has failed. Here, the reason that the speaker 12 is determined to be faulty is that it is difficult to assume that a microphone that has not been determined to be in a temporary abnormal state is faulty. The notification unit 106 displays on the display device 13 that the speaker 12 has failed according to the failure determination by the failure determination unit 105. As described above, the wireless communication device 1 can identify which acoustic conversion element has an abnormality.

  On the other hand, in step 21 (S21), the second comparison unit 104 compares the signal level of the test sound acquired from the microphone 11 determined to be in the temporary abnormal state with a predetermined threshold, and the determination result. Is notified to the failure determination unit 105. If the signal level is outside the predetermined range of the predetermined threshold (No in step 22 (S22)), the process proceeds to step 23. If the signal level is within a predetermined range of a predetermined threshold value (Yes in step 22), the failure determination unit 105 determines that the microphone determined to be in a temporary abnormal state has not failed, and the process is stepped. Return to 10. In this case, the failure determination unit 105 may determine that the microphone determined to be in the temporary abnormal state is normal.

  In step 23 (S23), the failure determination unit 105 determines that the signal level of the test sound acquired from the microphone that has been determined as a temporary abnormal state from the second comparison unit 104 is outside a predetermined range of a predetermined threshold. Upon receiving the notification that there is, the microphone that is determined to be in the temporary abnormal state is determined to be defective. Further, in accordance with the failure determination by the failure determination unit 105, the notification unit 106 displays on the display device 13 that the microphone determined to be in the temporary abnormal state has failed. As described above, the wireless communication device 1 can identify which acoustic conversion element has an abnormality.

  When the failure determination unit 105 determines that the microphone that has been determined to be in the temporary abnormal state has failed, the gain of the microphone may be automatically adjusted. For example, when it is determined that the signal level for a certain frequency among the signal levels of the test sound acquired from the microphone does not satisfy the threshold value, the gain may be adjusted to increase.

Embodiment 2
Next, a second embodiment of the present invention will be described. The wireless communication apparatus 1 according to the first embodiment has one speaker. However, in the present embodiment, as shown in FIG. 4, a plurality of speakers 12a and 12b are provided. The present embodiment is different from the failure determination in the first embodiment in that the failure determination of each speaker is performed using the microphone determined to be normal in addition to the failure determination in the first embodiment. In the following description, when any one of the speakers 12a and 12b is not specified, the speaker 12 may be referred to.

  FIG. 5 is a flowchart illustrating an example of an operation related to failure diagnosis in the wireless communication device 1 according to the second embodiment. As shown in FIG. 5, this flowchart is different from the flowchart shown in FIG. 3 in that step 30 (S30) is newly provided after step 22 and after step 23. In the present embodiment, in step 17, the test sound output unit 103 outputs a predetermined test sound from any of the speakers 12a and 12b.

  Step 30 is a process of performing a failure diagnosis for each speaker 12 provided in the wireless communication device 1. As shown in the description of step 18, when the signal level of the test sound acquired from the microphone 11 that is not determined to be in the temporary abnormal state is within a predetermined range of a predetermined threshold (Yes in step 19). ), The failure determination unit 105 determines that the microphone that has not been determined to be in the temporary abnormal state is normal.

  In the present embodiment, failure determination unit 105 performs the following processing in addition to the above processing. The failure determination unit 105 according to the second embodiment determines that the signal level of the test sound output from the speaker determined to be normal is within a predetermined range of a predetermined threshold and is normal in step 19. Using the determined microphone, it is determined whether a speaker other than the speaker determined to be normal among the plurality of speakers 12 is normal. Needless to say, each threshold value based on a combination of a plurality of speakers and a plurality of microphones is stored in a memory (not shown) of the microcontroller 10.

  Details of step 30 will be described below. FIG. 6 is a flowchart illustrating an example of specific processing in step 30.

  First, in step 300 (S300), the test sound output unit 103 outputs a test sound from the failure determination target speaker. For example, if the test sound is output using the speaker 12a in step 17, Yes is determined in step 19 and it is determined that the speaker 12a is normal. Therefore, in such a case, in step 300, the speaker 12b is selected as a failure determination target, and the test sound output unit 103 outputs the test sound from the speaker 12b. After step 300, the process proceeds to step 301.

  In step 301 (S301), the second comparison unit 104 compares the signal level of the test sound acquired from the microphone determined to be normal with a predetermined threshold value, and notifies the failure determination unit 105 of the determination result. To do. If the signal level is outside the predetermined range of the predetermined threshold (No in step 302 (S302)), the process proceeds to step 303. When the signal level is within a predetermined range of a predetermined threshold (Yes in Step 302), the failure determination unit 105 determines that the speaker that has output the test sound in Step 300 is normal, and the processing is performed in Step 304. Migrate to

  In Step 301, in this embodiment, the microphone determined to be normal by the failure determination unit 105 in Step 19 is used, but another microphone may be used. For example, for each microphone 11, it is confirmed whether the signal level of the test sound output from the speaker determined to be normal is within a predetermined range of the threshold, and is determined to be normal as being within the predetermined range of the threshold A microphone may be used in step 301.

  In step 303 (S303), failure determination section 105 determines that the signal level of the test sound acquired from the microphone determined to be normal from second comparison section 104 is outside a predetermined range of a predetermined threshold value. In step 300, it is determined that the speaker that output the test sound has failed. Further, in accordance with the failure determination by the failure determination unit 105, the notification unit 106 displays on the display device 13 that the speaker that has output the test sound in step 300 has failed. Thus, the wireless communication device 1 can identify which speaker has an abnormality among the plurality of speakers.

  In step 304 (S304), the failure determination unit 105 checks whether or not a test sound has been output for all the failure determination target speakers. If the test sound has not been output for all the failure determination target speakers, the process returns to step 300, and the test sound is output for the remaining speakers. When the test sound is output for all the speakers to be determined for failure, the failure determination process for the speakers ends.

  Note that the present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention. For example, in the above-described embodiment, there are two microphones. However, the number of microphones is not limited to two and may be plural. Moreover, in the said embodiment, although the some microphone was provided in order to use for noise cancellation, the use of a microphone is not restricted to this. In addition, the electronic device is not limited to a wireless communication device, and may be, for example, a general electronic device such as a recorder capable of stereo recording / playback, and detects a temporary abnormality of a microphone during recording from the microphone. The failure diagnosis method of the present invention may be used. Further, the number of speakers in each embodiment is not limited to the number shown above.

  When the configuration of the microcontroller 10 is realized by executing a program, the program is stored using various types of non-transitory computer readable media and supplied to the computer. it can. Non-transitory computer readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (Random Access Memory)) are included. The program may also be supplied to the computer by various types of transitory computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

DESCRIPTION OF SYMBOLS 1 Wireless communication apparatus 10 Microcontroller 11 Microphone 12 Speaker 13 Display apparatus 14 PTT switch 100 Transmission / reception part 101 First comparison part 102 Counting part 103 Test sound output part 104 Second comparison part 105 Failure determination part 106 Notification part

Claims (12)

A failure diagnosis method for electronic equipment,
Comparing the signal level of the sound acquired from each of the plurality of microphones included in the electronic device with a predetermined threshold;
When the signal level of the sound acquired from any one of the plurality of microphones is less than the threshold value, a predetermined test sound is output from a specific speaker among at least one speaker included in the electronic device,
Determining whether or not the speaker is normal based on a signal level of the test sound acquired from a microphone other than the microphone whose signal level is less than the threshold among the plurality of microphones;
A failure diagnosis method for determining whether or not a microphone whose signal level is less than the threshold is normal using the speaker determined to be normal. The test sound is output from the speaker when the signal level of sound acquired from any one of the plurality of microphones is equal to or more than a predetermined number of times that the signal level is less than the threshold value. The failure diagnosis method described.   The number of times that the signal level is less than the threshold value is counted when the signal level is less than the threshold value during an operation for using a plurality of microphones of the electronic device. The failure diagnosis method described. The failure diagnosis method according to claim 1, wherein the test sound is output from the speaker when the number of the microphones having the signal level less than the threshold is one among the plurality of microphones. The failure diagnosis method according to any one of claims 1 to 4, wherein a failure determined by identifying an abnormality among the plurality of microphones and the at least one speaker is specified. When the electronic apparatus includes a plurality of speakers, the signal level of the test sound output from the speaker determined to be normal among the plurality of microphones is within a predetermined range of a predetermined threshold for test sound. The failure according to any one of claims 1 to 3, wherein a microphone other than the speaker determined to be normal among the plurality of speakers is determined to be normal using a microphone that is Diagnosis method. Multiple microphones,
At least one speaker;
A comparison means for comparing the signal level of the sound acquired from each of the plurality of microphones with a predetermined threshold;
A test sound output means for outputting a predetermined test sound from a specific speaker among the at least one speaker when a signal level of sound acquired from any one of the plurality of microphones is less than the threshold; ,
It is determined whether or not the speaker is normal based on a signal level of the test sound acquired from a microphone other than the microphone whose signal level is less than the threshold among the plurality of microphones, and the speaker is normal If it is determined that the microphone is an electronic device, the determination unit determines whether the microphone whose signal level is less than the threshold is normal using the speaker. The test sound output means, when the signal level of the sound acquired from any one of the plurality of microphones is less than the threshold is a predetermined number of times or more, The electronic device according to claim 7, wherein the test sound is output from a specific speaker.   9. The number of times that the signal level is less than the threshold value is counted when the signal level is less than the threshold value during an operation for using a plurality of microphones of the electronic device. The electronic device described. A plurality of the speakers;
The determination means uses a microphone whose signal level of the test sound output from the speaker determined to be normal is within a predetermined range of a predetermined threshold for test sound, among the plurality of microphones. The electronic apparatus according to any one of claims 7 to 9, wherein it is determined whether or not a speaker other than the speaker determined to be normal among the plurality of speakers is normal. Multiple microphones,
At least one speaker;
Transmitting means for transmitting sound input to at least one of the plurality of microphones;
A comparison means for comparing the signal level of the sound acquired from each of the plurality of microphones with a predetermined threshold;
The cumulative number of times that the signal level of the sound acquired from any one of the plurality of microphones is less than the threshold value during the transmission by the transmission unit is equal to or greater than a predetermined number of times. A test sound output means for outputting a predetermined test sound from a specific speaker among the at least one speaker;
It is determined whether or not the speaker is normal based on the signal level of the test sound acquired from a microphone other than the microphone whose signal level is less than the threshold among the plurality of microphones, and the speaker is normal A wireless communication apparatus including: a determination unit configured to determine whether or not a microphone whose signal level is less than the threshold is normal using the speaker. In the computer of electronic equipment,
Comparing the signal level of the sound acquired from each of the plurality of microphones included in the electronic device with a predetermined threshold;
A step of outputting a predetermined test sound from a specific speaker among at least one speaker included in the electronic device when a signal level of sound acquired from any one of the plurality of microphones is less than the threshold value; When,
It is determined whether or not the speaker is normal based on a signal level of the test sound acquired from a microphone other than the microphone whose signal level is less than the threshold among the plurality of microphones, and the speaker is normal A program for determining whether or not a microphone whose signal level is less than the threshold is normal using the speaker.

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