Double-control acoustic impedance testing device

Abstract

The utility model discloses a double-control acoustic impedance testing device, which comprises a main controller, a power supply module, a probe, an acoustic output module, an acoustic feedback signal acquisition module and an air pressure adjusting module, and is characterized in that the main controller outputs an audio data signal to the acoustic output module, receives an acoustic feedback signal output by the acoustic feedback signal acquisition module, and sends the acoustic feedback signal to the probe; an air pressure adjusting control signal is sent to the air pressure adjusting module, and an air pressure feedback signal sent by the air pressure adjusting module is received; the sub-controller receives a detection sound signal sent by the loudspeaker through the input / output interface, transmits a microphone driving signal and transmits a sensor driving signal; the air pressure adjusting module converts the air pressure parameter into an air pressure feedback signal for output; the sound output module controls a loudspeaker to emit a detection sound signal according to the received audio data signal; the acoustic feedback signal acquisition module is used for converting the echo signal into an acoustic feedback signal; the power supply module provides working voltage. According to the utility model, the acoustic impedance can be tested more quickly and accurately.

Description

TECHNICAL FIELD

[0001] The utility model relates to acoustic impedance test technical field more particularly, relate to a kind of double-control acoustic impedance testing device. BACKGROUND

[0002] Acoustic impedance test is also called middle ear analyzer, to understand and diagnose middle ear inflammation, eustachian tube function and stapedius muscle reflex, generally used to distinguish conductive hearing loss and mixed hearing loss.Acoustic impedance refers to the absorption of sound in medium, equal to the ratio of interface pressure and the sound flux (particle flow rate or bulk velocity multiplied by area) through the surface.

[0003] Now commonly used acoustic impedance equipment, volume is larger, need external power supply, it is inconvenient to carry and go out diagnosis problem, and due to the transmission problem of the line between probe and test host, acoustic wave detection and air pressure parameter adjustment are inaccurate, in turn affect the accuracy of test result. UTILITY MODEL CONTENT

[0004] The utility model aims at at least one of the technical problems existing in the prior art is solved.For this purpose, the utility model provides a kind of double-control acoustic impedance testing device, and the test of acoustic impedance is more quickly and accurately.

[0005] The utility model provides a kind of double-control acoustic impedance testing device, it includes: main controller, power module, probe, sound output module, sound feedback signal acquisition module and air pressure adjustment module, wherein,

[0006] The output end of main controller exports audio data signal to the input end of sound output module;

[0007] The receiving end of main controller receives the sound feedback signal that the output end of sound feedback signal acquisition module exports;

[0008] The transceiver end of main controller sends air pressure adjustment control signal to the transceiver end of air pressure adjustment module, and receives the air pressure feedback signal that the transceiver end of air pressure adjustment module sends;

[0009] Probe includes: sub-controller, input-output interface and air duct, wherein,

[0010] Sub-controller receives the detection sound signal that the loudspeaker of sound output module sends by input-output interface, and passes through input-output interface and transfers microphone drive signal to the drive end of the microphone of sound feedback signal acquisition module, and passes through input-output interface and transfers sensor drive signal to the drive end of the air pressure sensor of air pressure adjustment module;

[0011] The air pressure regulation module receives an air pressure regulation control signal to drive the air pump of the air pressure regulation module to regulate the air pressure parameters of the gas transmitted by the air duct, and the air pressure regulation module converts the air pressure parameters detected by the air pressure sensor into an air pressure feedback signal output.

[0012] The audio data signal received by the sound output module is used to control the speaker to emit a probe tone signal;

[0013] The acoustic feedback signal acquisition module is used to convert the echo signal of the detection sound signal acquired by the microphone into an acoustic feedback signal for output.

[0014] The power module provides operating voltage to the main controller, sound output module, sound feedback signal acquisition module, and air pressure regulation module.

[0015] Furthermore, it also includes a wireless communication module, which is used to wirelessly connect the main controller to the computer.

[0016] Furthermore, the power supply module includes: a rectifier module or a DC power supply module.

[0017] Furthermore, the audio output module also includes: a DAC converter, a first amplifier, and a power amplifier, wherein,

[0018] A DAC converter is used to convert received audio data signals into analog audio signals;

[0019] The first amplifier is used to receive and amplify the analog audio signal into an amplified audio signal;

[0020] The power amplifier is used to receive and transmit the amplified audio signal to the speaker.

[0021] Furthermore, the acoustic feedback signal acquisition module also includes: a first ADC converter and a second amplifier, wherein,

[0022] The second amplifier is used to receive and amplify the echo signal collected by the microphone, thus amplifying the echo signal.

[0023] The first ADC converter is used to receive and convert the amplified echo signal into a digital signal, which is then transmitted to the main controller as an acoustic feedback signal.

[0024] Furthermore, the air pressure regulation module also includes: an air pump controller and a second ADC converter, wherein,

[0025] The air pump controller is used to receive the air pressure regulation control signal sent by the main controller and drive the air pump to regulate the air pressure parameters of the gas transmitted by the air duct.

[0026] The second ADC converter is used to convert the gas pressure parameters detected by the pressure sensor from analog to digital and output them as a pressure feedback signal to the main controller.

[0027] Furthermore, the air pump is a stepper motor air pump.

[0028] Furthermore, the probe also includes a button module and a display module, wherein,

[0029] The button module is used to send control commands to the sub-controller; the display module is used to display the information sent by the sub-controller.

[0030] Furthermore, the button module includes a start button and a channel selection button; the display module includes status indicator lights and left and right directional indicator lights.

[0031] Furthermore, the probe has a housing, and the speaker, barometric pressure sensor, and microphone are integrated into the housing.

[0032] The beneficial effects of this utility model are as follows:

[0033] Because a sub-controller is installed at the probe position, the generation of the probe sound signal can be monitored more quickly and accurately, thereby enabling the main controller to obtain the acoustic feedback signal and the air pressure parameters in the external auditory canal in a timely and accurate manner, thus allowing the main controller to perform acoustic impedance testing more quickly and accurately.

[0034] This utility model's dual-control acoustic impedance testing device is characterized by its small size, light weight, good portability, and ease of carrying.

[0035] The power module supports dual power supply operation, providing great convenience when there is no mains power available while traveling, and solving the problem of power supply difficulties when traveling.

[0036] The dual-control acoustic impedance testing device of this invention can support tympanogram testing, acoustic emission threshold testing, Eustachian tube testing, acoustic attenuation testing, and latency testing by connecting to an external portable computer.

[0037] When the dual-control acoustic impedance testing device of this utility model is operated via a tablet computer using a wireless communication module, the diagnostic results can be printed out in real time through devices such as wireless Bluetooth printers, or connected to a remote database via wireless networks, providing doctors with remote medical diagnosis methods and big data analysis tools. Attached Figure Description

[0038] To facilitate understanding of this invention, it will be described in more detail with reference to the specific embodiments shown in the accompanying drawings. These drawings depict only typical embodiments of this invention and should not be considered as limiting the scope of protection of this invention.

[0039] Figure 1 This is a schematic diagram of the principle structure of one embodiment of the present utility model.

[0040] Figure 2 This is a schematic diagram of another embodiment of the present invention.

[0041] Figure 3 This is a circuit diagram of the main controller according to one embodiment of the present invention.

[0042] Figure 4 This is a circuit diagram of a sub-controller according to one embodiment of the present invention.

[0043] Figure 5 This is a circuit diagram of a wireless communication module according to one embodiment of the present invention.

[0044] Figure 6 This is a circuit diagram of a power module according to one embodiment of the present invention.

[0045] Figure 7 This is a schematic diagram of the probe's principle structure according to one embodiment of the present invention.

[0046] Figure 8 This is a circuit diagram of the sound output module according to one embodiment of the present invention.

[0047] Figure 9 This is a circuit diagram of the acoustic feedback signal acquisition module according to one embodiment of the present invention.

[0048] Figure 10 This is a circuit diagram of the second amplifier according to one embodiment of the present invention.

[0049] Figure 11 This is a circuit diagram of a pressure sensor according to one embodiment of the present invention.

[0050] Figure 12 This is a circuit diagram of an air pump controller according to one embodiment of the present invention. Detailed Implementation

[0051] The embodiments of the present invention are described below with reference to the accompanying drawings, so that those skilled in the art can better understand and implement the present invention. However, the listed embodiments are not intended to limit the present invention. In the absence of conflict, the following embodiments and the technical features in the embodiments can be combined with each other, wherein the same components are indicated by the same reference numerals.

[0052] In one embodiment, such as Figure 1As shown, the dual-control acoustic impedance testing device of this utility model includes: a main controller 01, a power supply module 02, a probe 03, an acoustic output module 04, an acoustic feedback signal acquisition module 05, and an air pressure regulation module 06.

[0053] The output terminal of the main controller 01 outputs an audio data signal to the input terminal of the sound output module 04;

[0054] The receiver of the main controller 01 receives the acoustic feedback signal output from the output of the acoustic feedback signal acquisition module 05;

[0055] The main controller 01 sends air pressure regulation control signals to the air pressure regulation module 06 and receives air pressure feedback signals from the air pressure regulation module 06.

[0056] Probe 03 includes: a sub-controller 31, an input / output interface 32, and an air duct 33, wherein,

[0057] The sub-controller 31 receives the detection sound signal emitted by the speaker 41 of the sound output module 04 through the input / output interface 32, and transmits the microphone drive signal to the drive end of the microphone 51 of the sound feedback signal acquisition module 05 through the input / output interface 32, and transmits the sensor drive signal to the drive end of the air pressure sensor 62 of the air pressure regulation module 06 through the input / output interface 32.

[0058] The air pressure regulation control signal received by the air pressure regulation module 06 is used to drive the air pump 61 of the air pressure regulation module 06 to regulate the air pressure parameters of the gas transmitted by the air duct 33, and the air pressure regulation module 06 is used to convert the air pressure parameters of the gas detected by the air pressure sensor 62 into an air pressure feedback signal output.

[0059] The audio data signal received by the sound output module 04 is used to control the speaker 41 to emit a detection tone signal;

[0060] The acoustic feedback signal acquisition module 05 is used to convert the echo signal of the detection sound signal acquired by the microphone 51 into an acoustic feedback signal for output.

[0061] The power module 02 provides operating voltage to the main controller 01, the sound output module 04, the sound feedback signal acquisition module 05, and the air pressure regulation module 06.

[0062] In the above embodiments, since a sub-controller is set at the probe position, the occurrence of the detection sound signal can be monitored more quickly and accurately, thereby enabling the main controller to obtain the acoustic feedback signal and the gas pressure parameters of the gas in the external auditory canal in a timely and accurate manner, so that the main controller can perform acoustic impedance testing more quickly and accurately.

[0063] In one embodiment, such as Figure 2As shown, the dual-control acoustic impedance testing device of this invention also includes a wireless communication module. The function of this wireless communication module is to wirelessly connect the acoustic impedance testing device to a portable computer, such as a tablet computer, to achieve data exchange. Furthermore, the dual-control acoustic impedance testing device also includes a tablet computer. The tablet computer wirelessly connects to the main controller 01 of the dual-control acoustic impedance testing device via a Bluetooth module or other wireless communication module to transmit preset data. The preset data includes: acoustic impedance detection data, acoustic impedance setting commands, etc. This structural design makes the dual-control acoustic impedance testing device small in size, lightweight, portable, and easy to carry.

[0064] The dual-control acoustic impedance testing device of this invention can support tympanogram testing, acoustic emission threshold testing, Eustachian tube testing, acoustic attenuation testing, and latency testing by connecting to an external portable computer.

[0065] When the dual-control acoustic impedance testing device of this utility model is operated via a tablet computer using a wireless communication module, the diagnostic results can be printed out in real time through devices such as wireless Bluetooth printers, or connected to a remote database via wireless networks, providing doctors with remote medical diagnosis methods and big data analysis tools.

[0066] In one embodiment, the main controller 01 is constructed using an STM32F407ZET6 chip, and its circuit structure is as follows: Figure 3 As shown.

[0067] In one embodiment, the sub-controller 31 is constructed using an STM32F103C6T6A chip, and its circuit structure is as follows: Figure 4 As shown.

[0068] In one embodiment, the circuit structure of the wireless communication module is as follows: Figure 5 As shown.

[0069] In one embodiment, such as Figure 2 As shown, the dual-control acoustic impedance testing device of this utility model also has a main control board. The main controller 01, the acoustic output module 04, the acoustic feedback signal acquisition module 05, the air pressure regulation module 06 and the wireless communication module are set on the main control board, and the power supply module 02 provides the working voltage for the main control board.

[0070] In one embodiment, the circuit structure of the power module 02 is as follows: Figure 6 As shown, power module 02 can convert AC power or lithium battery power into the operating voltage required by the main control board, supporting dual power supply operation. This provides great convenience when out in the absence of AC power, solving the problem of power supply difficulties. The above structural design makes the dual-control acoustic impedance testing device small in size, lightweight, portable, and easy to carry.

[0071] In one embodiment, probe 03 further includes a button module and a display module, wherein the button module sends control commands to the sub-controller 31; and the display module displays the information sent by the sub-controller 31. In an improved version of this embodiment, such as... Figure 7 As shown, the button module includes a start button and a channel selection button; the display module includes status indicator lights and left and right direction indicator lights. The status indicator lights can be LEDs. Through its user-friendly structural design, the probe 03 can be used directly for function operation and status display, thus supporting both manual and automatic working modes.

[0072] In an improved version of the above embodiment, the probe 03 has an earplug-like housing, and the speaker 41, air pressure sensor 62, and microphone 51 are integrated into the earplug-like housing. During use, the earplug-like housing of the probe 03 is inserted into the external auditory canal for detection. Key control commands are input to the sub-controller 31 through the key module of the probe 03. The sub-controller 31 controls the air pressure parameters of the gas transmitted by the air duct 33 through the air pressure regulation module 06, and displays the status through the display module.

[0073] In one embodiment, such as Figure 2 As shown, the sound output module 04 also includes a DAC converter, a first amplifier, and a power amplifier. The DAC converter converts the received audio data signal into an audio analog signal. The audio analog signal is amplified into an amplified audio signal by the first amplifier. The amplified audio signal is output to the speaker 41 via the power amplifier to output the detection sound signal.

[0074] In one embodiment, the circuit structure corresponding to the sound output module 04 is as follows: Figure 8 As shown.

[0075] In one embodiment, such as Figure 2 As shown, the acoustic feedback signal acquisition module 05 also includes a first ADC converter and a second amplifier. The microphone 51 acquires or picks up the echo signal of the detection sound signal emitted by the speaker 41. The acquired or picked-up echo signal is amplified into an amplified echo signal by the second amplifier. The amplified echo signal is converted into a digital signal by the first ADC converter and then transmitted to the main controller 01 as an acoustic feedback signal.

[0076] In one embodiment, the circuit structure corresponding to the acoustic feedback signal acquisition module 05 is as follows: Figure 9 As shown.

[0077] In one embodiment, the circuit structure corresponding to the second amplifier is as follows: Figure 10 As shown.

[0078] In one embodiment, such asFigure 2 As shown, the air pressure regulation module 06 also includes an air pump controller and a second ADC converter. The air pump controller is used to receive the air pressure regulation control signal sent by the main controller 01 and drive the air pump 61 to regulate the air pressure parameters of the gas transmitted by the air duct 33. The second ADC converter is used to convert the air pressure parameters detected by the air pressure sensor 62 under the drive of the sensor drive signal into analog and digital and output them as air pressure feedback signals to the main controller 01.

[0079] In one embodiment, the circuit structure of the pressure sensor 62 is as follows: Figure 11 As shown.

[0080] In one embodiment, the air pump 61 is composed of a stepper motor, and the corresponding air pump controller is composed of a motor driver chip of model DRV8825, and the corresponding circuit structure is as follows. Figure 12 As shown.

[0081] The following describes one working process of the dual-control acoustic impedance testing device of this utility model, with specific practical application examples:

[0082] An earplug-shaped probe 03, integrating a speaker 41, a pressure sensor 62, and a microphone 51, is inserted into the external auditory canal for detection. The main controller 01 outputs an audio data signal through an audio algorithm. The audio data signal is converted into an analog signal by a DAC converter, then amplified by a first amplifier, and finally output to the speaker 41 by a power amplifier to output the detection sound signal.

[0083] The probe sound signal propagates into the external auditory canal. Due to the differences in the internal structure of the human ear, irregular obstacles are formed, causing sound wave echoes and varying degrees of attenuation. Echoes from different locations will overlap, causing accuracy errors. The microphone 51 of the acoustic feedback signal acquisition module 05 collects and picks up the echo signal returned after the probe sound signal emitted by the speaker 41 passes through the external auditory canal. The echo signal is then amplified by the second amplifier and converted into a digital signal by the first ADC converter before being transmitted to the main controller 01.

[0084] After processing the received digital signal using an algorithm, the main controller 01 calculates the acoustic impedance parameter value.

[0085] During the above process, under the control of the sub-controller 31, button control can be performed via the button module, status can be displayed via the display module, and the air pressure value in the external auditory canal can be adjusted via the air pressure adjustment module 06. Specifically, the main controller 01 outputs an air pressure adjustment control signal to control the air pump controller and drives the air pump 61 to control the air pressure parameters of the gas output from the air duct 33; the air pressure sensor 62 detects the air pressure parameters in the external auditory canal, and then outputs the detection result to the main controller 01 after conversion by the second ADC converter. The main controller 01 performs negative feedback adjustment on the air pump 61 according to the detected air pressure parameters, so that the air pressure parameters output by the air pump 61 reach the set value.

[0086] During the above process, the main controller 01 can also be wirelessly connected to the tablet computer via Bluetooth module to achieve data interaction, such as displaying the acoustic impedance detection data on the tablet computer and sending relevant acoustic impedance setting commands to the main controller 01.

[0087] In the above process, the main controller 01 controls and processes the sound output module 04, sound feedback signal acquisition module 05, air pressure regulation module 06 and wireless communication module to obtain the sound impedance detection result. The operation process is extremely simple.

[0088] In the above process, the echo sound wave (i.e., the echo signal of the probe tone signal) is collected, amplified, separated, and then attenuated and restored. By comparing it with the original sound wave (i.e., the probe tone signal), the return time and attenuation value of the sound wave can be accurately obtained, thereby understanding the volume of the inside of the ear and the objects inside. That is, through experiments and simulation calculations, the acoustic impedance is tested.

[0089] The embodiments described above are merely preferred embodiments of this utility model. The terms "in one embodiment," "in another embodiment," "in yet another embodiment," or "in still another embodiment" used in this specification all refer to one or more of the same or different embodiments according to this disclosure. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution should be included within the protection scope of this utility model.

Claims

1. A dual-control acoustic impedance testing device, characterized in that, include: The system includes a main controller (01), a power supply module (02), a probe (03), a sound output module (04), a sound feedback signal acquisition module (05), and a pressure regulation module (06). The output terminal of the main controller (01) outputs an audio data signal to the input terminal of the sound output module (04); The receiver of the main controller (01) receives the acoustic feedback signal output from the output of the acoustic feedback signal acquisition module (05); The main controller (01) sends a pressure regulation control signal to the transceiver of the pressure regulation module (06) and receives a pressure feedback signal from the transceiver of the pressure regulation module (06). The probe (03) includes: a sub-controller (31), an input / output interface (32), and an air duct (33), wherein, The sub-controller (31) receives the detection sound signal emitted by the speaker (41) of the sound output module (04) through the input / output interface (32), and transmits the microphone drive signal to the drive end of the microphone (51) of the sound feedback signal acquisition module (05) through the input / output interface (32), and transmits the sensor drive signal to the drive end of the air pressure sensor (62) of the air pressure regulation module (06) through the input / output interface (32); The air pressure regulation module (06) receives an air pressure regulation control signal to drive the air pump (61) of the air pressure regulation module (06) to regulate the air pressure parameters of the gas transmitted by the air duct (33), and the air pressure regulation module (06) converts the air pressure parameters of the gas detected by the air pressure sensor (62) into an air pressure feedback signal output. The audio data signal received by the sound output module (04) is used to control the speaker (41) to emit a detection tone signal; The acoustic feedback signal acquisition module (05) is used to convert the echo signal of the detection sound signal acquired by the microphone (51) into an acoustic feedback signal for output; The power supply module (02) provides operating voltage to the main controller (01), the sound output module (04), the sound feedback signal acquisition module (05), and the air pressure regulation module (06).

2. The dual-control acoustic impedance testing device according to claim 1, characterized in that, It also includes a wireless communication module, which is used to wirelessly connect the main controller (01) to the computer.

3. The dual-control acoustic impedance testing device according to claim 1, characterized in that, The power module (02) includes: a rectifier module or a DC power module.

4. The dual-control acoustic impedance testing device according to claim 1, characterized in that, The audio output module (04) also includes: a DAC converter, a first amplifier, and a power amplifier, wherein, A DAC converter is used to convert received audio data signals into analog audio signals; The first amplifier is used to receive and amplify the analog audio signal into an amplified audio signal; The power amplifier is used to receive and transmit the amplified audio signal to the speaker (41).

5. The dual-control acoustic impedance testing device according to claim 1, characterized in that, The acoustic feedback signal acquisition module (05) also includes: a first ADC converter and a second amplifier, wherein, The second amplifier is used to receive and amplify the echo signal collected by the microphone (51) into an amplified echo signal. The first ADC converter is used to receive and convert the amplified echo signal into a digital signal, which is then transmitted to the main controller (01) as an acoustic feedback signal.

6. The dual-control acoustic impedance testing device according to claim 1, characterized in that, The air pressure regulation module (06) also includes: an air pump controller and a second ADC converter, wherein, The air pump controller is used to receive the air pressure regulation control signal sent by the main controller (01) and drive the air pump (61) to regulate the air pressure parameters of the gas transmitted by the air duct (33); The second ADC converter is used to convert the gas pressure parameters detected by the gas pressure sensor (62) from analog to digital and output them as a gas pressure feedback signal to the main controller (01).

7. The dual-control acoustic impedance testing device according to claim 1, characterized in that, The air pump (61) is a stepper motor air pump.

8. The dual-control acoustic impedance testing device according to claim 1, characterized in that, The probe (03) also includes: a button module and a display module, wherein, The button module is used to send control commands to the sub-controller (31); the display module is used to display the information sent by the sub-controller (31).

9. The dual-control acoustic impedance testing device according to claim 8, characterized in that, The button module includes a start button and a channel selection button; the display module includes status indicator lights and left and right directional indicator lights.

10. The dual-control acoustic impedance testing device according to claim 1, characterized in that, The probe (03) has a housing, and the speaker (41), barometric pressure sensor (62) and microphone (51) are integrated into the housing.

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