JP6558873B2 - Device information acquisition system, electrical device, and program - Google Patents

Description

  The present invention relates to a technique for acquiring information related to an operating state from an electric device such as a home appliance.

  As a method of externally outputting information (apparatus information) related to the internal operating state in home appliances and presenting it to the user, a LED provided on the home appliance blinks in a predetermined procedure, or a liquid crystal display provided in the home appliance A method of displaying device information or the like is conventionally known.

  Patent Document 1 discloses a home appliance diagnosis system that outputs product information as a signal sound from a home appliance when receiving a failure diagnosis, receives the signal sound at a terminal, and transmits the signal sound to a diagnosis server.

Special table 2012-532558 gazette

  As in the above-described Patent Document 1, in this type of conventional technology, the home appliance needs to include a device for receiving a failure diagnosis execution command from the user. In such a failure diagnosis, device information is unilaterally output from the home appliance, and an interactive user interface for obtaining device information desired by the user has not been realized.

  The present invention has been made to solve the above-described conventional problems, and it is not necessary to mount a dedicated input / output device in an electrical device, and a device that can acquire device information desired by a user from the electrical device. The purpose is to provide an information acquisition system.

In order to achieve the above object, a device information acquisition system according to the present invention includes:
A device information acquisition system comprising an electrical device and a terminal device,
The electrical equipment is
Piezoelectric sounder,
A microcomputer,
The microcomputer is
A plurality of types of device information and a plurality of types of voltage waveform patterns corresponding to the types of the device information are stored in advance in a memory,
The waveform pattern in the voltage signal corresponding to the vibration generated by the contact operation by the user with respect to the electrical device, output from the piezoelectric sounder,
When the obtained waveform pattern matches any of the plurality of types of voltage waveform patterns, device information corresponding to the voltage waveform pattern is read from the memory, and an AC signal representing the read device information is generated and generated. Output an AC signal to the piezoelectric sounder,
The piezoelectric sounder outputs a sound in response to the AC signal,
The terminal device
A microphone that receives sound from the electrical device and outputs an electrical signal;
A controller that restores the device information from the electrical signal output from the microphone and displays the restored device information on a display unit in a predetermined manner.
It is characterized by that.

  According to the present invention, it is not necessary to mount a dedicated input / output device in an electric device, and it is possible to acquire device information desired by a user from the electric device.

It is a figure which shows the structure of the apparatus information acquisition system which concerns on Embodiment 1 of this invention. It is a figure which shows schematic structure of a piezoelectric sounder peripheral circuit. It is a block diagram which shows the structure of a terminal device. 3 is a flowchart illustrating a procedure of device information acquisition processing according to the first embodiment. It is a figure which shows an example of an apparatus information selection screen. It is a figure which shows the example of an input in an apparatus information selection screen. It is a figure which shows an example of a start instruction | indication screen. It is a figure which shows a mode that the terminal device was made to contact an electric equipment. It is a figure which shows a mode that the terminal device was vibrated. It is a figure which shows an example of an error screen. It is a figure which shows an example of an acquisition result screen (in the case of operation mode). It is a figure which shows an example of an acquisition result screen (in the case of an error code). It is a flowchart which shows the procedure of an apparatus information output process. FIG. 3 is a diagram illustrating an output band of a piezoelectric sounder in the first embodiment. In the modification of Embodiment 1, it is a figure for demonstrating the method of telling the kind of apparatus information to request | require to an electric equipment. It is a figure which shows the structure of the apparatus information acquisition system in the modification of Embodiment 1. It is a figure which shows the structure of the apparatus information acquisition system which concerns on Embodiment 2 of this invention. 10 is a flowchart illustrating a procedure of device information acquisition processing according to the second embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a diagram showing a configuration of a device information acquisition system 1 according to Embodiment 1 of the present invention. The device information acquisition system 1 is a system that acquires information (device information) related to the operation state from home appliances and the like used in general households and presents the information to the user. Specifically, if any abnormality occurs in a home appliance, the user acquires device information from the home appliance, etc., and communicates the acquired device information to the customer service center of the home appliance, etc. by telephone. A usage mode such as receiving advice on countermeasures from the customer service center or the like is assumed. The device information acquisition system 1 includes an electric device 10 and a terminal device 20.

<< Configuration of Electrical Device 10 >>
The electrical device 10 is, for example, a home appliance such as a microwave oven, a rice cooker, and a washing machine. As illustrated in FIG. 1, the input unit 11, the main operation unit 12, the piezoelectric sounder 13, and the microcomputer 14 are provided. Prepare. The input unit 11 includes buttons, a dial, and the like, receives an input operation from the user, and outputs a signal corresponding to the received input operation to the microcomputer 14.

  The main operation unit 12 is a component for realizing the original function of the electric device 10 (for example, a heating function in the case of a microwave oven, a rice cooking or a heat retaining function in the case of a rice cooker).

  The piezoelectric sounder 13 is a known piezoelectric speaker that includes a piezoelectric element and a diaphragm. In recent home appliances (for example, a microwave oven, a rice cooker, etc.), in order to notify the user of the end of the operation, it is not uncommon to mount a piezoelectric speaker as a sound generating device. The configuration of the piezoelectric sounder 13 is the same as that of a piezoelectric speaker mounted on such a general household appliance. FIG. 2 shows a schematic configuration of a peripheral circuit of the piezoelectric sounder 13. This peripheral circuit is also realized with a known configuration.

  The piezoelectric sounder 13 outputs an electronic sound such as a buzzer sound in response to a command from the microcomputer 14. For example, the piezoelectric sounder 13 outputs an electronic sound such as a buzzer sound in response to a command from the microcomputer 14 when the main operation unit 12 completes a specific operation (for example, completion of cooking). Thereby, the user can recognize that specific operation, such as rice cooking, was completed. The piezoelectric sounder 13 also outputs an electronic sound indicating the device information of the electrical device 10 output from the microcomputer 14 as an operation unique to the present invention. Details of the operation unique to the present invention will be described later.

  Although not shown, the microcomputer 14 is a microcomputer composed of a readable / writable semiconductor memory such as a microprocessor, a RAM (Random Access Memory), a ROM (Read Only Memory), and a flash memory. The microcomputer 14 performs overall control of the electric device 10. More specifically, the microcomputer 14 controls the operation of the main operation unit 12 according to a user input operation as a normal function. Thereby, the main operation | movement part 12 performs operation | movements, such as rice cooking and heat retention, for example. Functions unique to the present invention of the microcomputer 14 will be described later.

<< Configuration and Operation of Terminal Device 20 >>
The terminal device 20 is a portable device such as a smartphone or a tablet PC. As illustrated in FIG. 3, the terminal device 20 includes a communication unit 21, an input unit 22, a data storage unit 23, a display unit 24, a microphone 25, a speaker 26, and a vibrator 27.

  The communication unit 21 includes a predetermined wide-area communication interface, and performs data communication with an external server or the like via a wide-area network such as the Internet under the control of the control unit 28.

  The input unit 22 includes buttons, a touch panel, a touch pad, and the like, and performs processing for receiving an operation input from a user.

  The data storage unit 23 is configured by, for example, a readable / writable nonvolatile semiconductor memory such as a flash memory. The data storage unit 23 stores various application programs and system programs, and also stores various data used when executing these programs.

  The display unit 24 is configured with a liquid crystal display or the like, and displays various screens and the like corresponding to user operations under the control of the control unit 28.

  The microphone 25 is a microphone that converts received sound into an electric signal and outputs the electric signal to the control unit 28. The speaker 26 outputs the AC signal output from the control unit 28 as a sound.

  Vibrator 27 is composed of a vibration motor or the like, and vibrates according to a vibration pattern according to an instruction from control unit 28.

  The control unit 28 includes a CPU (Central Processing Unit), a ROM, a RAM, and the like (all not shown), and controls the terminal device 20 in an integrated manner. As a function peculiar to the present invention, the control unit 28 executes device information acquisition processing for acquiring information (device information) related to the operation state from the electrical device 10.

  This device information acquisition process is started when the user selects an icon indicating activation of this process (that is, an icon indicating execution of an application program corresponding to this process). FIG. 4 is a flowchart showing the procedure of the device information acquisition process.

  First, the control unit 28 displays an operation screen (device information selection screen 501) for allowing the user to select a desired type of device information as shown in FIG. 5 on the display unit 24 (step S101). In the device information selection screen 501 of FIG. 5, the user can select the type of device information desired to be acquired by pressing one of the radio buttons 502 and 503. In the present embodiment, there are two types of device information: an operation mode and an error code. FIG. 6 shows an example when the radio button 502 (corresponding to the operation mode) is pressed.

  The operation mode is a current operation mode of the electric device 10. For example, in the case of a rice cooker, there are types such as “rice cooking”, “heat retention”, “power saving”, “abnormal”, etc. Also, an error code Is a code assigned in advance for each type and content of the abnormality when the operation mode is “abnormal”, and in the present embodiment, is composed of a three-digit numerical value (“000” to “999”). ).

  In the device information selection screen 501, when one of the radio buttons 502 and 503 is pressed down by the user and the OK button 504 is pressed down (step S102; YES), the control unit 28, as shown in FIG. Then, a screen (start instruction screen 701) for receiving a vibration start instruction from the user is displayed on the display unit 24 (step S103).

  As shown in FIG. 7, the start instruction screen 701 displays a message that prompts the user to contact the terminal device 20 in advance with the electric device 10 that desires to acquire device information. When the start instruction screen 701 is displayed, the user brings the terminal device 20 into contact with the electric device 10 (see FIG. 8). In the example of FIG. 8, a state in which the terminal device 20 is placed on the upper surface of the electric device 10 is illustrated. Of course, before the start instruction screen 701 is displayed, the user may bring the terminal device 20 into contact with the electrical device 10 in advance.

  When the user presses the start button 702 on the start instruction screen 701 after the terminal device 20 has been brought into contact with the electrical device 10 in this way (step S104; YES), the control unit 28 is selected by the user first. The vibrator 27 is vibrated with a vibration pattern corresponding to the type of the device information (see FIG. 9) (step S105). Data on the vibration pattern corresponding to the type of device information (that is, corresponding to each of the operation mode and error code) is stored in the data storage unit 23 when the application program corresponding to this process is installed.

  Although details will be described later, when the electric device 10 detects vibration given from the terminal device 20, the electric device 10 analyzes the vibration pattern to determine the type of requested device information. Then, the electric device 10 encodes and modulates the determined type of device information held therein, and outputs the information from the piezoelectric sounder 13 with sound.

  When sound is received by the microphone 25 after the vibration of the vibrator 27 (step S106; YES), the control unit 28 demodulates the electrical signal output from the microphone 25 and decodes it to the original information (ie, device information). The process to perform (restoration process) is performed (step S107). The control unit 28 performs demodulation and decoding in accordance with predetermined procedures.

  The control unit 28 determines whether or not the restored information is device information (step S108). When the information after restoration is not device information, that is, when it does not correspond to any of the operation mode and the error code (step S108; NO), it is considered that the sound is not emitted from the electric device 10 (that is, noise), The control unit 28 stands by until the sound is received again by the microphone 25 (step S106).

  On the other hand, when the information after restoration is device information (step S108; YES), the control unit 28 matches the type of information after restoration (that is, the type of received device information) with the type of requested device information. It is determined whether or not to perform (step S109). As a result, if the types of both pieces of device information do not match (step S109; NO), the control unit 28 displays an error screen 1001 as shown in FIG. 10 on the display unit 24 (step S110), and displays the device information to the user. Inquire about the necessity of acquisition retry.

  When the user presses the OK button 1002 on the error screen 1001 (step S111; YES), the process of the control unit 28 returns to step S103. On the other hand, when the user presses the cancel button 1003 on the error screen 1001 (step S111; NO), the control unit 28 ends the device information acquisition process.

  If the types of both pieces of device information match in step S109 (step S109; YES), the control unit 28 displays a screen (acquisition result) showing the contents of the received device information as shown in FIGS. Screens 1101 and 1201) are displayed (step S112). FIG. 11 shows an example when the device information is an operation mode, and FIG. 12 shows an example when the device information is an error code.

  In the acquisition result screen 1101 of FIG. 11, the control unit 28 displays the contents (name here) of the device information in characters, but may display a code corresponding to the operation mode. Alternatively, both characters and codes may be displayed.

  Further, in the acquisition result screen 1201 of FIG. 12, the control unit 28 displays the contents of the device information as a code, but may display a description corresponding to the error code in characters. Or you may display both a code and a character.

  When the user presses the close button 1102 (or close button 1202) on the acquisition result screen 1101 (or the acquisition result screen 1201) (step S113; YES), the control unit 28 ends the device information acquisition process. To do.

<< Operation of Electrical Device 10 >>
Subsequently, a characteristic operation of the electric device 10 in the present invention will be described. FIG. 13 is a flowchart illustrating a procedure of device information output processing executed by the microcomputer 14 included in the electrical device 10. The piezoelectric sounder 13 of the electric device 10 outputs a voltage signal to the microcomputer 14 when detecting vibration applied to the electric device 10.

  When the microcomputer 14 detects the voltage signal from the piezoelectric sounder 13 (step S201; YES), the microcomputer 14 obtains a waveform pattern (voltage waveform pattern) in the voltage signal based on the detection result at a predetermined time (step S202).

  The microcomputer 14 determines whether or not the obtained voltage waveform pattern matches any of the voltage waveform patterns held in advance (for example, stored in a nonvolatile semiconductor memory or the like) (step S203). Here, there are two types of voltage waveform patterns held by the microcomputer 14, one corresponding to the operation mode request from the terminal device 20, and the other corresponding to the error code request from the terminal device 20. Data indicating these voltage waveform patterns is derived by experiment, and is stored in advance in the semiconductor memory or the like provided in the microcomputer of the electric device 10 before shipment.

  In the experiment here, for example, when the terminal device 20 is brought into contact with the electric device 10 as described above and is vibrated with a vibration pattern corresponding to the type of device information, the voltage signal output from the piezoelectric sounder 13 is measured. Repeat the determination of the waveform. And the voltage waveform pattern corresponding to each request | requirement of an operation mode and an error code is derived | led-out from the result.

  If it does not match any of the held voltage waveform patterns (step S203; NO), it is considered that the vibration is not given by the terminal device 20, and the processing of the microcomputer 14 returns to step S201.

  On the other hand, if the voltage waveform pattern matches one of the held voltage waveform patterns (step S203; YES) and matches the voltage waveform pattern corresponding to the request for the operation mode (step S204; YES), the microcomputer 14 The current operation mode is read from the nonvolatile memory or the like (step S205). On the other hand, when the voltage waveform pattern does not match the request for the operation mode (step S204; NO), that is, when the voltage waveform pattern matches the request for the error code, the microcomputer 14 The error code corresponding to the currently occurring abnormality is read out from (step S206).

  The microcomputer 14 encodes the read information (operation mode or error code) according to a predetermined procedure (step S207). Then, the microcomputer 14 generates a carrier frequency and modulates this carrier frequency by a predetermined procedure using the read information to generate an AC signal (step S208). The microcomputer 14 outputs the generated AC signal to the piezoelectric sounder 13, and a sound is output from the piezoelectric sounder 13 in response to the AC signal (step S209).

  FIG. 14 shows the output band of the piezoelectric sounder 13. As shown in FIG. 14, the output band of the piezoelectric sounder 13 substantially matches the corresponding band of the terminal device 20 (here, the human audible band).

  As described above, according to the device information acquisition system 1 of the present embodiment, desired electrical device information (operation mode or error) is obtained from the electrical device 10 using the piezoelectric sounder 13 that the electrical device 10 originally has. Code). Therefore, since it is not necessary to add a dedicated input / output device to the electric device 10, the present invention can be easily applied to an existing general-purpose electric device while suppressing an increase in manufacturing cost.

  In addition, since the user can select desired device information and make a request to the electric device 10, an interactive user interface is realized, which is excellent in convenience.

  Further, the terminal device 20 requests desired device information from the electric device 10 using a device (vibrator, microphone, liquid crystal display device, etc.) that is normally provided in a mobile device such as a smartphone, and obtains the content thereof. Can be presented to the user. Therefore, the present invention can be easily applied to the existing general-purpose portable device also for the terminal device 20.

  In this embodiment, the output band of the piezoelectric sounder 13 is substantially the same as the human audible band. However, if the corresponding band of the terminal device 20 includes an inaudible frequency (for example, an ultrasonic wave), The microcomputer 14 of the device 10 may output a sound wave (for example, an ultrasonic wave) having a non-audible frequency corresponding to the device information via the piezoelectric sounder 13. In this way, noise can be prevented since it cannot be heard by people around.

  There are also various methods for applying vibration to the electric device 10. For example, the user may apply vibration by playing the electric device 10 with a finger. In this case, in accordance with the type of device information to be requested, a procedure including the number of times of playing and an approximate time interval is determined in advance (see FIG. 15), and the microcomputer 14 corresponds to the case where the player is played in each procedure. Data indicating the voltage waveform pattern may be stored in advance in a nonvolatile semiconductor memory or the like.

  Further, by utilizing the fact that the piezoelectric sounder 13 is vibrated by sound and has a characteristic of outputting a voltage, a sound indicating the type of requested device information is output from the speaker 26 of the terminal device 20. Vibrations corresponding to the type of device information to be performed may be given to the electric device 10.

  In the above case, as illustrated in FIG. 16, the terminal device 20 may include a known voice input / output device 200 including a microphone and a speaker. Here, the connection terminal 202 of the voice input / output device 200 is connected to the earphone jack 29 provided in the main body of the terminal device 20. Here, it is desirable that the external appearance of the main body 201 incorporating the microphone and the speaker in the voice input / output device 200 is a female coupler. When acquiring the device information, the main body 201 is placed on the electric device 10 as shown in FIG. With the above configuration, the sound generated from both sides can be transmitted to the other party with high quality.

(Embodiment 2)
Subsequently, Embodiment 2 of the present invention will be described. In the following description, components and the like that are common to the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  FIG. 17 is a diagram illustrating a configuration of a device information acquisition system 1A according to the second embodiment. The device information acquisition system 1 </ b> A includes an electrical device 10, a terminal device 20 </ b> A, and an external server 30. The external server 30 is a server computer that is installed and operated by a company that manufactures and sells the electrical device 10, for example. The external server 30 is connected to a wide area network N such as the Internet.

  The physical configuration of the terminal device 20A is the same as that of the terminal device 20 of the first embodiment (see FIG. 3). The communication unit 21 of the terminal device 20A is connected to the wide area network N via an access point (AP) installed in the house and performs data communication with the external server 30.

  A feature of the terminal device 20A according to the second embodiment is a mode in which, when a sound output from the electrical device 10 is received, an electrical signal related to the received sound is determined in advance without performing modulation and decoding processing (restoration processing). Is transmitted to the external server 30, and the device information transmitted from the external server 30 is received and displayed. Hereinafter, this feature will be described with reference to the flowchart shown in FIG. 18 showing the procedure of the device information output process in the present embodiment.

  The control unit 28 of the terminal device 20A displays the device information selection screen 501 shown in FIG. 5 on the display unit 24 (step S301). On the device information selection screen 501, when one of the radio buttons 502 and 503 is pressed down by the user and the OK button 504 is pressed down (step S302; YES), the control unit 28 starts the start instruction shown in FIG. A screen 701 is displayed on the display unit 24 (step S303).

  When the user presses the start button 702 on the start instruction screen 701 after the terminal device 20A is brought into contact with the electrical device 10 (step S304; YES), the control unit 28 causes the device previously selected by the user to be selected. Vibrator 27 is vibrated with a vibration pattern corresponding to the type of information (step S305).

  When sound is received by the microphone 25 after the vibration of the vibrator 27 (step S306; YES), the control unit 28 determines the electrical signal output from the microphone 25 in a predetermined manner via the AP and the wide area network N. And transmitted to the external server 30 (step S307).

  When receiving the electrical signal from the terminal device 20A, the external server 30 performs demodulation and decoding processing (restoration processing) in the same procedure as the terminal device 20 of the first embodiment. Then, the external server 30 transmits the decrypted information to the terminal device 20A.

  When receiving information from the external server 30 via the communication unit 21 (step S308; YES), the control unit 28 determines whether the received information is device information (step S309). When the received information is not device information, that is, when it does not correspond to any of the operation mode and the error code (step S309; NO), it is considered that the sound is not emitted from the electric device 10 (that is, noise), and control is performed The unit 28 stands by until the sound is received again by the microphone 25 (step S306).

  On the other hand, when the information received from the external server 30 is device information (step S309; YES), the control unit 28 determines that the received information type (that is, the received device information type) is the requested device information type. (Step S310). As a result, if the types of both pieces of device information do not match (step S310; NO), the control unit 28 displays an error screen 1001 as shown in FIG. 10 on the display unit 24 (step S311), and displays the device information to the user. Inquire about the necessity of acquisition retry.

  When the user presses the OK button 1002 on the error screen 1001 (step S312; YES), the process of the control unit 28 returns to step S303. On the other hand, when the user presses the cancel button 1003 on the error screen 1001 (step S312; NO), the control unit 28 ends the device information acquisition process.

  If the types of both pieces of device information match in step S310 (step S310; YES), the control unit 28 displays an acquisition result screen 1101 or 1201 as shown in FIG. 11 or FIG. 12 (step S313). .

  When the user presses the close button 1102 (or close button 1202) on the acquisition result screen 1101 (or the acquisition result screen 1201) (step S314; YES), the control unit 28 ends the device information acquisition process. To do.

  The external server 30 determines whether the restored information is device information. If the information is not device information, error information indicating that fact is transmitted to the terminal device 20. May be.

  As described above, according to the device information acquisition system 1A of the present embodiment, when the terminal device 20A receives the sound emitted from the electrical device 10, the terminal device 20A does not perform the restoration process and performs the electrical operation related to the received sound. A signal is transmitted to the external server 30. Then, the terminal device 20A receives and displays the device information decrypted by the external server 30.

  Therefore, the process executed by the terminal device 20A is not complicated, and the size of the application program corresponding to the device information acquisition process can be greatly reduced. In addition, since the device information is restored by the external server 30, for example, a company operating the external server 30 can be manufactured and installed by installing only one application program corresponding to the device information acquisition process in the terminal device 20A. Device information can be acquired from various electric devices 10 to be sold. In addition, it is possible to easily cope with a change in the specification of the device information (for example, addition or change of the operation mode or error code type) without updating the application program already installed in the terminal device 20A.

  Note that the above-described modification of the first embodiment can be similarly applied to the second embodiment.

  The present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention.

  For example, the device information is not limited to two types of operation mode and error code, and may be three or more types. In this case, what is necessary is just to prepare the kind of vibration pattern which the terminal devices 20 and 20A hold | maintain, and the kind of voltage waveform pattern which the electric equipment 10 hold | maintains.

  Moreover, in each said embodiment, it is also possible to make the said portable device function as a terminal device which concerns on this invention by applying the program which each terminal device 20 and 20A each performs to portable devices, such as an existing smart phone. is there. Similarly, by applying a program executed by the microcomputer 14 of the electrical device 10 to a microcomputer of an existing home appliance having a piezoelectric sounder, the home appliance can also function as the electrical device according to the present invention. .

  Such a program distribution method is arbitrary, for example, a computer-readable recording medium such as a CD-ROM (Compact Disc Read Only Memory), a DVD (Digital Versatile Disc), an MO (Magneto-Optical disk), or a memory card. It may be stored and distributed in the network, or distributed via a communication network such as the Internet.

  DESCRIPTION OF SYMBOLS 1,1A apparatus information acquisition system, 10 electrical apparatus, 11,22 input part, 12 main operation | movement part, 13 piezoelectric sounder, 14 microcomputer, 20, 20A terminal device, 21 communication part, 23 data storage part, 24 display part, 25 Microphone, 26 Speaker, 27 Vibrator, 28 Control unit, 29 Earphone jack, 30 External server, 200 Voice input / output device, 201 Main unit, 202 Connection terminal, N Wide area network

Claims (5)

A device information acquisition system comprising an electrical device and a terminal device,
The electrical equipment is
Piezoelectric sounder,
A microcomputer,
The microcomputer is
A plurality of types of device information and a plurality of types of voltage waveform patterns corresponding to the types of the device information are stored in advance in a memory,
The waveform pattern in the voltage signal corresponding to the vibration generated by the contact operation by the user with respect to the electrical device, output from the piezoelectric sounder,
When the obtained waveform pattern matches any of the plurality of types of voltage waveform patterns, device information corresponding to the voltage waveform pattern is read from the memory, and an AC signal representing the read device information is generated and generated. Output an AC signal to the piezoelectric sounder,
The piezoelectric sounder outputs a sound in response to the AC signal,
The terminal device
A microphone that receives sound from the electrical device and outputs an electrical signal;
A controller that restores the device information from the electrical signal output from the microphone and displays the restored device information on a display unit in a predetermined manner.
A device information acquisition system characterized by that. The microphone of the terminal device can receive ultrasonic waves,
The microcomputer of the electrical device outputs an ultrasonic wave from the piezoelectric sounder;
The device information acquisition system according to claim 1. A device information acquisition system comprising an electrical device, a terminal device, and an external server,
The electrical equipment is
Piezoelectric sounder,
A microcomputer,
The microcomputer is
A plurality of types of device information and a plurality of types of voltage waveform patterns corresponding to the types of the device information are stored in advance in a memory,
The waveform pattern in the voltage signal corresponding to the vibration generated by the contact operation by the user with respect to the electrical device, output from the piezoelectric sounder,
When the obtained waveform pattern matches any of the plurality of types of voltage waveform patterns, device information corresponding to the voltage waveform pattern is read from the memory, and an AC signal representing the read device information is generated and generated. Output an AC signal to the piezoelectric sounder,
The piezoelectric sounder outputs a sound in response to the AC signal,
The terminal device
A microphone that receives sound from the electrical device and outputs an electrical signal;
A control unit that transmits an electrical signal output from the microphone to the external server in a predetermined mode, receives device information from the external server, and displays the received device information on the display unit in a predetermined mode And comprising
The external server restores the device information from the electrical signal received from the terminal device, and transmits the restored device information to the terminal device.
A device information acquisition system characterized by that. Piezoelectric sounder,
A microcomputer,
The microcomputer is
A plurality of types of device information and a plurality of types of voltage waveform patterns corresponding to the types of the device information are stored in advance in a memory,
The waveform pattern in the voltage signal corresponding to the vibration generated by the contact operation by the user output from the piezoelectric sounder is obtained,
When the obtained waveform pattern matches any of the plurality of types of voltage waveform patterns, device information corresponding to the voltage waveform pattern is read from the memory, and an AC signal representing the read device information is generated and generated. Output an AC signal to the piezoelectric sounder,
The piezoelectric sounder outputs sound in response to the AC signal.
Electrical equipment characterized by that. In the microcomputer,
A function for obtaining a waveform pattern in a voltage signal corresponding to a vibration generated by a contact operation by a user output from a piezoelectric sounder;
When the obtained waveform pattern matches any one of a plurality of types of voltage waveform patterns stored in advance in the memory, device information corresponding to the voltage waveform pattern is read from the memory, and an AC signal representing the read device information And a function for causing the piezoelectric sounder to output a sound corresponding to the generated AC signal.

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