A hearing screening instrument with composite operating function
Patent Information
- Application Number
- CN202522402743.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-12
- Publication Date
- 2026-10-16
- Estimated Expiration
- 2035-11-12
AI Technical Summary
[0004]但是，在医疗设备的特殊使用场景总，一些特殊情况下，比如说医生佩戴有硅胶手套，操作人员手上出汗、沾水等场合，触控按钮操作经常会产生误触，从而影响设备的正常使用，耽误诊察过程
[0010]The beneficial effects of this technical solution are as follows: During use, the numerical interface signal of the capacitive touch screen is connected to the level conversion and isolation circuit, and the signal of the operation button is connected to the Schmitt trigger/filter circuit through the matrix scanning circuit. This utility model can realize independent operation of the capacitive touch screen or the operation button. Operators can choose according to their actual situation. For example, when their hands are dry and they are not wearing gloves, they can directly operate the capacitive touch screen; when their hands are wet or they are wearing gloves, they can operate through the operation button, which is convenient for users and improves the efficiency of hearing screening.
Smart Images
Figure CN224853438U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to hearing screening equipment, and more particularly to a hearing screening instrument with multiple operating functions. Background Technology
[0002] A hearing screening device is a medical device used to quickly detect hearing problems, primarily for early hearing impairment screening in newborns, children, and adults.
[0003] Traditional hearing screening devices are button-operated, allowing users to switch between different view interfaces, browse data, and print data by pressing the buttons. However, with the widespread use of smartphones, touch operation is becoming increasingly user-friendly.
[0004] However, in special use cases of medical equipment, such as when doctors are wearing silicone gloves or when operators' hands are sweaty or wet, touch button operation often results in accidental touches, which can affect the normal use of the equipment and delay the diagnosis process. Utility Model Content
[0005] The purpose of this invention is to provide a hearing screening device with combined operation functions, which can be operated by touch or button as needed.
[0006] The technical solution of this utility model is as follows: A hearing screening device with multiple operating functions includes a housing with a capacitive touch screen and a main control chip. A button area is located on one side of the capacitive touch screen on the housing, and operation buttons are provided in the button area. A mode switching and signal processing unit is also located inside the housing. The mode switching and signal processing unit includes a low-power MCU, which is connected to the main control chip via a multiplexer. The mode switching and signal processing unit also includes a level conversion and isolation circuit and a rotary mitt trigger connected to the input terminal of the low-power MCU. The output terminal of the capacitive touch screen is connected to the level conversion and isolation circuit, and the operation buttons are connected to the input terminal of the rotary mitt trigger via a matrix scanning circuit.
[0007] Furthermore, the button area is located at the bottom front of the casing, and the capacitive touch screen covers the area of the front of the casing above the button area.
[0008] Furthermore, the standby current of the low-power MCU is no greater than 1µA.
[0009] Furthermore, the operation buttons include a left button, a right button, and a HOME button located between the left button and the right button. The HOME button is connected to the dedicated interrupt pin of the main control chip through an interrupt generation circuit.
[0010] The beneficial effects of this technical solution are as follows: During use, the numerical interface signal of the capacitive touch screen is connected to the level conversion and isolation circuit, and the signal of the operation button is connected to the Schmitt trigger / filter circuit through the matrix scanning circuit. This utility model can realize independent operation of the capacitive touch screen or the operation button. Operators can choose according to their actual situation. For example, when their hands are dry and they are not wearing gloves, they can directly operate the capacitive touch screen; when their hands are wet or they are wearing gloves, they can operate through the operation button, which is convenient for users and improves the efficiency of hearing screening. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of a hearing screening device with composite operation function according to the present invention; Figure 2 for Figure 1 A schematic diagram illustrating the coordination between the mode switching and signal processing unit and the main control chip; In the diagram: 1. Housing; 2. Capacitive touchscreen; 3. HOME button; 4. Button area; 5. Left button; 6. Right button; 7. Operation button; 8. Matrix scanning circuit; 9. Level conversion and isolation circuit; 10. Low-power MCU; 11. Mode switching and signal processing unit; 12. Multiplexer; 13. Schmitt trigger; 14. Interrupt generation circuit; 15. Main control chip. Detailed Implementation
[0012] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0013] The features and performance of this utility model will be further described in detail below with reference to the embodiments.
[0014] A specific embodiment of a hearing screening device with composite operation functions in this utility model is as follows: Figures 1-2 As shown, The device includes a housing 1 housing a capacitive touchscreen 2 and a main control chip. A button area 4 is located on one side of the capacitive touchscreen 2 on the housing, and operation buttons 7 are provided in the button area 4. In this embodiment, the operation buttons 7 include a left button 5, a right button 6, and a HOME button 3 located between the left button 5 and the right button 6.
[0015] The button area 4 is located at the bottom front of the casing, and the capacitive touch screen 2 covers the area of the front of the casing above the button area 4.
[0016] The casing also houses a mode switching and signal processing unit 11, which includes a low-power MCU 10. The standby current of this low-power MCU is no greater than 1µA, hence the name "low-power MCU." The low-power MCU 10 is connected to the main control chip 15 via a multiplexer 12. The mode switching and signal processing unit 11 also includes a level conversion and isolation circuit 9 and a rotary MIT trigger 13 connected to the input of the low-power MCU 10. The output of the capacitive touchscreen 2 is connected to the level conversion and isolation circuit 9, and the operation buttons 7 are connected to the input of the rotary MIT trigger 13 via a matrix scanning circuit 8.
[0017] During use, the numerical interface signal of the capacitive touchscreen is connected to the level conversion and isolation circuit. The function of the level conversion and isolation circuit is: 1. Adjust the voltage signal of the capacitive touchscreen to a level acceptable to the low-power MCU; 2. The isolation function is used to reduce the interference of high-frequency signals from the capacitive touch screen on the button signal path. The converted signal is connected to the dedicated digital I / O port of the low-power MCU.
[0018] The signal from the operation button is connected to the Schmitt trigger / filter circuit via a matrix scanning circuit. The function of the Schmitt trigger / filter circuit is: 1. Use a Schmitt trigger to debouncing and shaping the key signal to prevent multiple false signals from being generated by the rebound of mechanical contacts; 2. The interference is further removed by the filter circuit, and the processed button signal (debouncing) is connected to the general-purpose I / O port of the low-power MCU.
[0019] About the HOME button The debouncing signal for the HOME button is shunted and connected to the low-power MCU and also independently to the interrupt generation circuit. An interrupt generation circuit (such as a configured level / edge trigger) directly outputs a high-level or pulse signal to the dedicated interrupt pin (INT) of the main control chip. Its function is to bypass the internal logic of the low-power MCU and the arbitration of the multiplexer, ensuring that the "one-key return" command can be responded to immediately by the main control chip in any mode, thus achieving operational reliability.
[0020] The low-power MCU receives and analyzes touch and button signals in real time, and generates a mode selection control signal. This mode selection control signal is connected to the selection control pin of the multiplexer / digital arbitration logic. The input of the multiplexer receives instruction data from the capacitive touch screen signal path and the operation button signal path in parallel.
[0021] This invention enables independent operation of the capacitive touchscreen or the operation buttons. Operators can choose according to their actual situation. For example, when their hands are dry and they are not wearing gloves, they can directly operate the capacitive touchscreen; when their hands are wet or they are wearing gloves, they can operate the operation buttons; and they can also return to the main page with one click using the HOME button.
[0022] In the foregoing description of this specification, unless otherwise expressly specified and limited, the terms "fixed," "installed," "connected," or "joined" should be interpreted broadly. For example, the term "joined" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can refer to the internal communication of two components or the interaction between two components. Therefore, unless otherwise expressly limited in this specification, those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] Based on the above description in this specification, those skilled in the art will also understand that terms used, such as "upper," "lower," "front," "rear," "left," "right," "length," "width," "thickness," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," "center," "longitudinal," "transverse," "clockwise," or "counterclockwise," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not imply that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.
[0024] Furthermore, the terms "first" or "second," etc., used in this specification to refer to numbers or ordinal numbers are for descriptive purposes only and should not be construed as indicating, explicitly or implicitly, relative importance or specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this specification, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.
[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A hearing screening device with multiple operating functions, comprising a housing equipped with a capacitive touchscreen and a main control chip, characterized in that: A button area is provided on one side of the capacitive touch screen on the housing. The button area is equipped with operation buttons. A mode switching and signal processing unit is also provided inside the housing. The mode switching and signal processing unit includes a low-power MCU. The low-power MCU is connected to the main control chip through a multiplexer. The mode switching and signal processing unit also includes a level conversion and isolation circuit and a spin-Mit trigger connected to the input terminal of the low-power MCU. The output terminal of the capacitive touch screen is connected to the level conversion and isolation circuit. The operation buttons are connected to the input terminal of the spin-Mit trigger through a matrix scanning circuit.
2. The hearing screening device according to claim 1, characterized in that: The button area is located at the bottom front of the casing, and the capacitive touch screen covers the area above the button area on the front of the casing.
3. The hearing screening device according to claim 1, characterized in that: The standby current of the low-power MCU is no greater than 1µA.
4. The hearing screening device according to any one of claims 1 to 3, characterized in that: The operation buttons include a left button, a right button, and a HOME button located between the left and right buttons. The HOME button is connected to the dedicated interrupt pin of the main control chip through an interrupt generation circuit.