A full touch key structure and circuit of an electrocardiograph

Abstract

The utility model discloses a full touch button structure and circuit of electrocardiograph, a plurality of independent touch units have on capacitive touch button panel, circuit board is installed in lower cover and is electrically connected with a plurality of independent touch units respectively, a plurality of independent touch units and capacitive touch button panel are seamless integrated design, make capacitive touch button panel surface smooth and even no joint, adopt sealed design to realize liquid penetration prevention and convenient disinfection, eliminate the physical wear and tear and health dead angle of mechanical structure through full touch type design, improve equipment durability and cleanliness, adopt ESD protection module to realize anti-static interference ability, ensure stable response under clinical environment, fundamentally improve the man-machine interaction mode of electrocardiograph, make equipment more comply with the strict requirement of modern medical treatment to intelligentization, health safety and operation efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of electrocardiograph (ECG) machine buttons, specifically to a full-touch button structure and circuit for an ECG machine. Background Technology

[0002] An electrocardiogram (ECG) machine can automatically record the bioelectrical signals (ECG signals) generated by myocardial excitation during cardiac activity. It is a commonly used medical electronic instrument for clinical diagnosis and scientific research.

[0003] Before the heart beats, the myocardium is first excited, generating a weak electric current that is conducted through the body's tissues to various parts. Because different parts of the body have different tissues and are at different distances from the heart, different areas of the body surface exhibit different potential changes. This relationship between the surface potential generated by the electrical activity within the heart and time is called an electrocardiogram (ECG). An electrocardiograph (ECG) machine is an instrument that records these physiological electrical signals.

[0004] Traditional electrocardiographs (ECG) machines generally use mechanical buttons or membrane buttons as the human-computer interaction method, but they have obvious drawbacks in clinical medical applications: mechanical buttons are prone to accumulating contaminants in the gaps between the buttons after long-term use, increasing the risk of bacterial or viral infection; electrostatic interference can easily lead to malfunctions; and they are difficult to meet the protection requirements of frequent disinfection. Utility Model Content

[0005] Therefore, it is necessary to provide a fully touch-sensitive button structure and circuit for an electrocardiograph. This can solve the problem in existing technologies where mechanical buttons easily accumulate contaminants in the button gaps after long-term use, increasing the risk of bacterial or viral infection.

[0006] An electrocardiograph (ECG) machine has a fully touch-sensitive button structure, including an upper cover, a lower cover, a capacitive touch button panel, and a circuit board. The upper cover is detachably mounted on the lower cover, and the capacitive touch button panel is attached to the upper cover. The capacitive touch button panel has multiple independent touch units. The circuit board is installed inside the lower cover and is electrically connected to each of the multiple independent touch units. The multiple independent touch units and the capacitive touch button panel are seamlessly integrated, making the surface of the capacitive touch button panel smooth, flat, and without seams.

[0007] In one embodiment, the plurality of independent touch units are electrically connected to the circuit board via flexible ribbon cables.

[0008] In one embodiment, the capacitive touch button panel is made of polycarbonate material.

[0009] In one embodiment, a circuit is applied to the all-touch button structure of an electrocardiograph, the circuit comprising:

[0010] Multiple touch modules and a main control module, wherein the touch modules are used to acquire touch signals from independent touch units and send the touch signals to the main control module;

[0011] The main control module is used to issue corresponding control signals to perform corresponding operations based on the touch signals.

[0012] In one embodiment, the touch module includes a power noise suppression unit for suppressing power noise.

[0013] In one embodiment, the touch module further includes a voltage regulator unit, which is used to ensure that the output level is stable within a preset voltage range to be compatible with the main control module.

[0014] In one embodiment, the full-touch button circuit of the electrocardiograph further includes an ESD protection module, which is connected in parallel with the plurality of touch modules to prevent the plurality of touch modules from being damaged.

[0015] In one embodiment, the ESD protection module includes an ESD protection unit, the chip model of which is RCLAMP0524P.

[0016] The aforementioned electrocardiograph features a fully touch-sensitive button structure. The capacitive touch button panel has multiple independent touch units, with the circuit board installed inside the lower cover and electrically connected to each unit. These independent touch units are seamlessly integrated with the capacitive touch button panel, resulting in a smooth, flat, and seamless surface. A sealed design prevents liquid penetration and facilitates disinfection. The fully touch-sensitive design eliminates physical wear and hygiene dead zones in the mechanical structure, improving the equipment's durability and cleanliness. An ESD protection module provides anti-static interference capability, ensuring stable response in clinical environments. This fundamentally improves the human-machine interaction of the electrocardiograph, making the equipment more compliant with the stringent requirements of modern medicine for intelligence, hygiene, safety, and operational efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the assembly structure of a fully touch-sensitive button structure for an electrocardiograph according to an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the full-touch button circuit of an electrocardiograph according to an embodiment of the present invention;

[0019] Figure 3 for Figure 2 A circuit diagram of the touch module of the all-touch button circuit of an electrocardiograph according to an embodiment of the present invention;

[0020] Figure 4 for Figure 2A circuit diagram of the ESD protection module of the all-touch button circuit of an electrocardiograph according to an embodiment of the present invention;

[0021] Figure 5 for Figure 2 The wiring terminal circuit diagram of the full touch button circuit of an electrocardiograph according to an embodiment of this utility model. Detailed Implementation

[0022] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0023] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediary component present. Conversely, when a component is said to be "directly" connected to another component, there is no intermediary component.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] like Figure 1 As shown, an electrocardiograph (ECG) machine has a fully touch-sensitive button structure, including an upper cover, a lower cover, a capacitive touch button panel 2, and a circuit board. The upper cover is detachably mounted on the lower cover, and the capacitive touch button panel 2 is attached to the upper cover. The capacitive touch button panel 2 has multiple independent touch units 21. The circuit board is installed inside the lower cover and is electrically connected to the multiple independent touch units 21. The multiple independent touch units 21 and the capacitive touch button panel 2 are seamlessly integrated, making the surface of the capacitive touch button panel 2 smooth, flat, and without seams.

[0026] Multiple independent touch units 21 are electrically connected to the circuit board via flexible ribbon cables; the capacitive touch button panel 2 is made of polycarbonate material.

[0027] The capacitive touch panel 2 serves as a human-computer interaction interface. Its surface can be hardened, for example, by coating it with a nano-coating, typically made of silicon dioxide or aluminum oxide, giving it excellent wear resistance and scratch resistance. The capacitive touch panel 2 includes multiple independent touch units 21, each corresponding to a specific function key. These independent touch units 21 are seamlessly integrated with the capacitive touch panel 2, resulting in a smooth, flat, and seamless surface that facilitates disinfection and cleaning while effectively preventing liquid penetration. When an operator touches an independent touch unit 21 on the capacitive touch panel 2, the capacitance value changes. The signal is transmitted in real-time via a highly shielded flexible cable to the touch module and main control module on the circuit board. The main control module accurately identifies the touch action through polling and responds accordingly. The capacitive touch button panel 2 is made of polycarbonate (PC) material, which not only has good light transmittance and touch sensitivity, but also can withstand repeated wiping with common medical disinfectants such as alcohol and chlorine-containing disinfectants, ensuring that it can maintain good touch performance and appearance integrity even in long-term high-frequency use environments.

[0028] In this way, the electrocardiograph's all-touch button structure features multiple independent touch units 21 on the capacitive touch button panel 2. The circuit board is installed inside the lower cover and electrically connected to each of the multiple independent touch units 21. The multiple independent touch units 21 and the capacitive touch button panel 2 are seamlessly integrated, making the surface of the capacitive touch button panel 2 smooth, flat, and without seams. The sealed design prevents liquid penetration and facilitates disinfection. The all-touch design eliminates physical wear and hygiene dead spots in the mechanical structure, improving the equipment's durability and cleanliness. The use of an ESD protection module provides anti-static interference capability, ensuring stable response in clinical environments. This fundamentally improves the human-computer interaction of the electrocardiograph, making the equipment more in line with the stringent requirements of modern medicine for intelligence, hygiene and safety, and operational efficiency.

[0029] like Figure 2 As shown, in one embodiment, a circuit is applied to a fully touch-sensitive button structure of an electrocardiograph, the circuit comprising:

[0030] The system includes multiple touch modules 100 and a main control module 200. Each touch module 100 acquires touch signals from an independent touch unit 21 and sends these signals to the main control module. Each touch module 100 corresponds one-to-one with an independent touch unit 21. Each independent touch unit 21 represents a different function. The touch module 100 uses a TTP233H-HA6 touch chip to construct a high-reliability detection circuit.

[0031] The main control module 200 is used to send corresponding control signals to perform corresponding operations based on the touch signals.

[0032] When the operator touches the independent touch unit 21 on the capacitive touch button panel 2, the capacitance value changes. The signal is transmitted in real time to the touch module 100 corresponding to the independent touch unit 21 on the circuit board through a highly shielded flexible ribbon cable. The touch module 100 transmits the signal to the main control module 200. The main control module 200 accurately identifies the touch action through polling and makes a corresponding response.

[0033] like Figure 3 As shown, in one embodiment, the touch module 100 includes a power noise suppression unit 110 for suppressing power noise.

[0034] For example, the power supply noise suppression unit 110 includes a resistor R291 and a capacitor C271. One end of the resistor R291 is connected to one end of the capacitor C271, and the other end of the capacitor C271 is connected to ground. The RC filter network formed by the resistor R291 and the capacitor C271 supplies power to the VDD pin, effectively suppressing power supply noise. The TOG pin and AHLB pin of the touch module 100 are grounded through resistors (e.g., resistors R301 and R302) to enable the TTP233H-HA6 chip to operate in the direct output high-level active mode. Two 5V pull-up resistor bits (e.g., resistors R300 and R303) are reserved for mode adjustment.

[0035] In one embodiment, the touch module 100 further includes a voltage regulator unit 120, which is used to ensure that the output level is stable within a preset voltage range to be compatible with the main control module.

[0036] For example, the voltage regulator unit 120 includes a resistor R305 and a Zener diode D69. One end of the resistor R305 is connected to the cathode of the Zener diode D69. A protection circuit using a current-limiting resistor R305 in series with the 3.3V Zener diode D69 ensures that the output level is stable within the 3.3V range to ensure compatibility with the main control module. The main control module can be an MPU module or an MCU module.

[0037] In one embodiment, the full-touch button circuit of the electrocardiograph further includes an ESD protection module 300, which is connected in parallel with the plurality of touch modules 100 to prevent the plurality of touch modules from being damaged.

[0038] like Figure 4 and Figure 5 As shown, in one embodiment, the ESD protection module 300 includes an ESD protection unit 310, the chip model of which is RCLAMP0524P.

[0039] Multiple touch modules 100 are electrically connected to the ESD protection module 300 via terminal blocks 400.

[0040] The ESD protection unit 310 features a low input capacitance of 0.6pF, ensuring high-fidelity transmission of touch signals. Its ±17kV air discharge and ±12kV contact discharge protection ratings fully meet the protection requirements of the IEC 61000-4-2 standard. When an operator touches the independent touch unit 21 and electrostatic discharge occurs, the ESD protection unit 310 of the ESD protection module 300 responds quickly, diverting the ESD energy to ground rather than into the chip. This clamps transient overvoltages within a safe range, providing reliable electrostatic protection for subsequent touch chips without affecting the transmission quality of normal touch signals.

[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A fully touch-sensitive button structure for an electrocardiograph, characterized in that: The device includes an upper cover, a lower cover, a capacitive touch button panel, and a circuit board. The upper cover is detachably mounted on the lower cover. The capacitive touch button panel is attached to the upper cover and has multiple independent touch units. The circuit board is installed inside the lower cover and is electrically connected to each of the multiple independent touch units. The multiple independent touch units and the capacitive touch button panel are seamlessly integrated, making the surface of the capacitive touch button panel smooth, flat, and without seams.

2. The all-touch button structure of an electrocardiograph according to claim 1, characterized in that: The multiple independent touch units are electrically connected to the circuit board via flexible ribbon cables.

3. The all-touch button structure of an electrocardiograph according to claim 1, characterized in that: The capacitive touch button panel is made of polycarbonate material.

4. A fully touch-sensitive button circuit for an electrocardiograph, characterized in that, The circuit applied in the all-touch button structure of the electrocardiograph as described in any one of claims 1 to 3, the circuit comprising: Multiple touch modules and a main control module, wherein the touch modules are used to acquire touch signals from independent touch units and send the touch signals to the main control module; The main control module is used to issue corresponding control signals to perform corresponding operations based on the touch signals.

5. The fully touch-sensitive button circuit for an electrocardiograph according to claim 4, characterized in that: The touch module includes a power noise suppression unit for suppressing power noise.

6. The fully touch-sensitive button circuit for an electrocardiograph according to claim 5, characterized in that: The touch module also includes a voltage regulator unit, which is used to ensure that the output level is stable within a preset voltage range to be compatible with the main control module.

7. The fully touch-sensitive button circuit for an electrocardiograph according to claim 6, characterized in that: The full-touch button circuit of the electrocardiograph also includes an ESD protection module, which is connected in parallel with the multiple touch modules to prevent the multiple touch modules from being damaged.

8. The fully touch-sensitive button circuit for an electrocardiograph according to claim 7, characterized in that: The ESD protection module includes an ESD protection unit, and the chip model of the ESD protection unit is RCLAMP0524P.

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