阅读说明：本技术 一种非接触式心电检测多层复合电极系统 (Non-contact electrocardio detects multilayer combined electrode system ) 是由 史斌君 冯宝亮 施长城 左国坤 吴刚 赵大正 陈静 王荣 于 2021-09-18 设计创作，主要内容包括：本发明提供了一种非接触式心电检测多层复合电极系统,涉及心电监测技术领域。本发明所述的非接触式心电检测多层复合电极系统,包括介电缓冲层、敏感层、绝缘层和参考电极层；所述介电缓冲层为可承载离子液体的介质层材料,用于增加所述敏感层与人体皮肤之间的电容；所述敏感层用于采集电压值并将所述电压值传递至信号处理电路中,以通过所述信号处理电路将所述电压值转换为心电信号；所述绝缘层用于隔绝所述敏感层和所述参考电极层；所述参考电极层与所述信号处理电路连接,用于去除工频干扰及环境噪音。本发明所述的技术方案,通过多层复合电极的设置减小心电信号在耦合过程中产生的衰减,实现有效的非接触式心电检测。(The invention provides a non-contact electrocardio detection multilayer composite electrode system, and relates to the technical field of electrocardio monitoring. The invention relates to a non-contact electrocardio detection multilayer composite electrode system, which comprises a dielectric buffer layer, a sensitive layer, an insulating layer and a reference electrode layer; the dielectric buffer layer is a dielectric layer material capable of bearing ionic liquid and is used for increasing the capacitance between the sensitive layer and the skin of the human body; the sensitive layer is used for collecting a voltage value and transmitting the voltage value to the signal processing circuit so as to convert the voltage value into an electrocardiosignal through the signal processing circuit; the insulating layer is used for isolating the sensitive layer from the reference electrode layer; and the reference electrode layer is connected with the signal processing circuit and is used for removing power frequency interference and environmental noise. According to the technical scheme, attenuation of electrocardiosignals generated in the coupling process is reduced through the arrangement of the multilayer composite electrodes, and effective non-contact electrocardio detection is realized.)

1. A non-contact electrocardio detection multilayer composite electrode system is characterized by comprising a dielectric buffer layer, a sensitive layer, an insulating layer and a reference electrode layer;

the dielectric buffer layer is a dielectric layer material capable of bearing ionic liquid and is used for increasing the capacitance between the sensitive layer and the skin of the human body;

the sensitive layer is used for collecting a voltage value and transmitting the voltage value to the signal processing circuit so as to convert the voltage value into an electrocardiosignal through the signal processing circuit;

the insulating layer is used for isolating the sensitive layer from the reference electrode layer;

and the reference electrode layer is connected with the signal processing circuit and is used for removing power frequency interference and environmental noise.

2. The non-contact electrocardio-detection multilayer composite electrode system as claimed in claim 1, wherein the sensitive layers comprise a first sensitive layer and a second sensitive layer in an arch shape, the first sensitive layer and the second sensitive layer are symmetrically arranged, and the first sensitive layer and the second sensitive layer are respectively connected with the signal processing circuit as an electrocardio positive electrode and an electrocardio negative electrode.

3. The multi-layer composite electrode system for non-contact electrocardiographic detection according to claim 2, wherein the dielectric buffer layer is distributed at intervals in a lattice form above the first sensitive layer and the second sensitive layer, and the dielectric buffer layer above the first sensitive layer and the dielectric buffer layer above the second sensitive layer are symmetrically arranged.

4. The multi-layer composite electrode system for non-contact electrocardiographic detection according to claim 3, wherein the material of the dielectric layer capable of bearing ionic liquid is hydrogel, ionic gel, wet sponge or fabric, or wet tissue.

5. The multi-layer composite electrode system for non-contact electrocardiographic detection according to claim 1, further comprising a membrane pressure sensor for measuring body position to determine the sleeping position of the human body.

6. The multi-layer composite electrode system for non-contact electrocardiographic detection according to claim 5, wherein the thin film pressure sensor comprises a plurality of pressure sensing units, and the plurality of pressure sensing units are arranged at intervals along the length direction of the sensitive layer.

7. The non-contact electrocardiographic detection multilayer composite electrode system according to claim 1, further comprising a substrate layer, wherein the substrate layer is attached to the reference electrode layer, and the substrate layer is used for supporting the dielectric buffer layer, the sensitive layer, the insulating layer and the reference electrode layer.

8. The multi-layer composite electrode system for non-contact electrocardiographic detection according to claim 7, further comprising a plurality of adhesive layers, wherein the plurality of adhesive layers are respectively located between the sensitive layer and the insulating layer, between the insulating layer and the reference electrode layer, and between the reference electrode layer and the substrate layer.

9. The non-contact electrocardio-detection multilayer composite electrode system according to claim 1, wherein the signal processing circuit comprises an alternating current coupling circuit, an instrument amplifier, a high-pass filter, an adjustable multiple operational amplifier, a low-pass filter, a mode conversion module, a microprocessor and a data transmission module which are connected in sequence, the microprocessor is used for generating the electrocardiosignals, and the data transmission module is used for transmitting the electrocardiosignals in a wired or wireless transmission mode.

10. The non-contact electrocardiographic detection multilayer composite electrode system according to claim 9, wherein the data transmission module is adapted to be connected to an electrocardiographic data acquisition and display terminal, and the electrocardiographic data acquisition and display terminal is configured to store and analyze the electrocardiographic signals and display the analyzed electrocardiographic images on a display.

Technical Field

The invention relates to the technical field of electrocardio monitoring, in particular to a non-contact electrocardio detection multilayer composite electrode system.

Background

The morbidity and mortality of cardiovascular diseases in China are in an ascending stage, the number of patients of cardiovascular diseases is calculated to be 2.9 hundred million, the mortality of cardiovascular diseases is still the first place, and accounts for more than 40 percent of the death of resident diseases. Traditional electrocardio detection usually adopts contact equipment, but contact electrocardio detection needs the electrode slice to contact skin, is not friendly to the sensitive patient of skin. Therefore, in recent years, a non-contact mode is proposed to detect electrocardiosignals of a human body, the existing non-contact electrocardio sensor is basically formed by compounding a conductive electrode and an insulating substrate material, and a few of the non-contact electrocardio sensors are additionally provided with a conductive shielding layer on the basis of the non-contact electrocardio sensor to reduce the interference of an external electromagnetic field on the acquisition of weak signals. However, the existing multilayer composite non-contact electrocardio sensing electrode still has the problem that the electrode is easily interfered by external conditions such as different clothes materials, motion artifacts, static electricity and the like, and the requirement for stably detecting electrocardio signals in the application scene of a medical bed is difficult to meet.

Disclosure of Invention

The invention solves the problem of how to realize effective non-contact electrocardio detection.

In order to solve the problems, the invention provides a non-contact electrocardio detection multilayer composite electrode system, which comprises a dielectric buffer layer, a sensitive layer, an insulating layer and a reference electrode layer; the dielectric buffer layer is a dielectric layer material capable of bearing ionic liquid and is used for increasing the capacitance between the sensitive layer and the skin of the human body; the sensitive layer is used for collecting a voltage value and transmitting the voltage value to the signal processing circuit so as to convert the voltage value into an electrocardiosignal through the signal processing circuit; the insulating layer is used for isolating the sensitive layer from the reference electrode layer; and the reference electrode layer is connected with the signal processing circuit and is used for removing power frequency interference and environmental noise.

The non-contact electrocardio detection multilayer composite electrode system reduces attenuation of electrocardiosignals generated in the coupling process through the arrangement of the multilayer composite electrodes, reduces impedance between a sensitive layer and human skin, effectively avoids interference of obtaining the electrocardiosignals in a non-contact mode, and accordingly realizes effective non-contact electrocardio detection.

Optionally, the sensitive layers include a first sensitive layer and a second sensitive layer in an arch shape, the first sensitive layer and the second sensitive layer are symmetrically arranged, and the first sensitive layer and the second sensitive layer are respectively used as an electrocardiogram positive electrode and an electrocardiogram negative electrode to be connected with the signal processing circuit.

According to the non-contact electrocardio detection multilayer composite electrode system, the sensitive layers comprise the first sensitive layer and the second sensitive layer which are arched, so that the requirement of electrocardio detection in three different positions of lying, left side body and right side body is met, and effective non-contact electrocardio detection is realized.

Optionally, the dielectric buffer layers are distributed at intervals in a lattice form above the first sensitive layer and the second sensitive layer, and the dielectric buffer layers above the first sensitive layer and the dielectric buffer layers above the second sensitive layer are symmetrically arranged.

According to the non-contact electrocardio detection multilayer composite electrode system, the dielectric buffer layers are arranged and distributed above the first sensitive layer and the second sensitive layer at intervals in a lattice mode, so that the problem that the equivalent coupling capacitance is reduced when a human body lies on the left side and the right side is solved, and the electrocardio signals are effectively collected.

Optionally, the material of the medium layer capable of bearing the ionic liquid is hydrogel, ionic gel, wet sponge or fabric, and wet tissue.

According to the non-contact electrocardio detection multilayer composite electrode system, the capacitance between the sensitive layer and the skin of a human body is increased through the dielectric layer material capable of bearing the ionic liquid, so that the collected electrocardiosignals are enhanced, and effective non-contact electrocardio detection is realized.

Optionally, the non-contact electrocardiographic detection multilayer composite electrode system further comprises a film pressure sensor, and the film pressure sensor is used for measuring body positions to determine the sleeping positions of the human body.

The non-contact electrocardio detection multilayer composite electrode system is beneficial to determining the sleeping posture of a human body by arranging the film pressure sensor to measure the body position.

Optionally, the thin film pressure sensor includes a plurality of pressure sensing units, and the plurality of pressure sensing units are arranged at intervals along the length direction of the sensitive layer.

The non-contact electrocardio detection multilayer composite electrode system is beneficial to accurately determining the sleeping posture of a human body by arranging the pressure sensing units at intervals along the length direction of the sensitive layer.

Optionally, the non-contact electrocardiographic detection multilayer composite electrode system further comprises a substrate layer, the substrate layer is attached to the reference electrode layer, and the substrate layer is used for supporting the dielectric buffer layer, the sensitive layer, the insulating layer and the reference electrode layer.

According to the non-contact electrocardio detection multilayer composite electrode system, the substrate layer used for supporting the dielectric buffer layer, the sensitive layer, the insulating layer and the reference electrode layer is arranged, so that the strength of the non-contact electrocardio detection multilayer composite electrode system is effectively improved, and effective non-contact electrocardio detection can be realized for a long time.

Optionally, the non-contact electrocardiographic detection multilayer composite electrode system further includes a plurality of adhesive layers, and the plurality of adhesive layers are respectively located between the sensitive layer and the insulating layer, between the insulating layer and the reference electrode layer, and between the reference electrode layer and the substrate layer.

The non-contact electrocardio detection multilayer composite electrode system provided by the invention improves the strength of the non-contact electrocardio detection multilayer composite electrode system by arranging the plurality of bonding layers, thereby realizing effective non-contact electrocardio detection for a long time.

Optionally, the signal processing circuit includes an ac coupling circuit, an instrumentation amplifier, a high-pass filter, an adjustable multiple operational amplifier, a low-pass filter, a mode conversion module, a microprocessor, and a data transmission module, which are connected in sequence, where the microprocessor is configured to generate the electrocardiographic signal, and the data transmission module is configured to transmit the electrocardiographic signal in a wired or wireless transmission manner.

The non-contact electrocardio detection multilayer composite electrode system realizes the conversion from a voltage value to an electrocardio signal by arranging the specific composition of a signal processing circuit, reduces various interferences in the electrocardio detection and further realizes effective non-contact electrocardio detection.

Optionally, the data transmission module is adapted to be connected to an electrocardiographic data acquisition and display terminal, and the electrocardiographic data acquisition and display terminal is configured to store and analyze the electrocardiographic signals, and display the analyzed electrocardiogram on a display.

According to the non-contact electrocardio detection multilayer composite electrode system, the electrocardio data acquisition and display terminal is arranged to store and analyze electrocardio signals, and the analyzed electrocardiogram is displayed on the display, so that real-time detection and random query of the electrocardio signals are realized.

Drawings

FIG. 1 is a schematic diagram of a non-contact electrocardiographic detection multi-layer composite electrode system according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating an exemplary application of a non-contact electrocardiographic detection multi-layer composite electrode system according to an embodiment of the present invention;

FIG. 3 is a diagram illustrating the processing and transmission of ECG signals according to an embodiment of the present invention;

FIG. 4 is a graphical display of an electrical cardiac signal according to an embodiment of the present invention;

FIG. 5 is one of the modified shapes of the sensitive layer of the embodiment of the present invention;

FIG. 6 shows a second modified shape of the sensitive layer according to the embodiment of the present invention;

fig. 7 shows a third improved shape of the sensitive layer according to the embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

As shown in fig. 1, an embodiment of the present invention provides a non-contact electrocardiographic detection multi-layer composite electrode system, which includes a dielectric buffer layer, a sensitive layer, an insulating layer, and a reference electrode layer; the dielectric buffer layer is a dielectric layer material capable of bearing ionic liquid and is used for increasing the capacitance between the sensitive layer and the skin of the human body; the sensitive layer is used for collecting a voltage value and transmitting the voltage value to the signal processing circuit so as to convert the voltage value into an electrocardiosignal through the signal processing circuit; the insulating layer is used for isolating the sensitive layer from the reference electrode layer; and the reference electrode layer is connected with the signal processing circuit and is used for removing power frequency interference and environmental noise.

Specifically, in the present embodiment, the non-contact electrocardiographic detection multilayer composite electrode system includes a dielectric buffer layer, a sensitive layer, an insulating layer, and a reference electrode layer. The dielectric buffer layer is made of a dielectric layer material capable of bearing ionic liquid, so that the capacitance between the sensitive layer and the skin of a human body is increased, the impedance between the sensitive layer and the skin of the human body is reduced, and a better electrocardiosignal can be obtained under the condition of isolating cotton bedsheets and clothes. The sensitive layer is used for generating coupling capacitance and transmitting the voltage value to a signal processing circuit for signal processing of subsequent filtering and the like in real time through a lead wire of the edge welding. The insulating layer is used for isolating the sensitive layer from the reference electrode layer. The reference electrode layer is also called a right leg driving electrode and is connected into a signal processing circuit through a lead welded at the edge of the reference electrode layer, and the reference electrode layer is used for removing power frequency interference and noise in the environment.

The electrocardiosignals have infirmity (generally only 0.05 mV-5 mV), instability (human body electric signals are in dynamic change), low-frequency characteristics (the frequency spectrum range of the human body electrocardiosignals is mainly concentrated in 0.05-100 Hz), and randomness (human body non-uniformity and receivable multi-channel input, information is easy to change along with external interference, and therefore the electrocardiosignals show randomness). In consideration of the above characteristics of the electrocardiosignal, the present embodiment provides a multilayer composite electrode, and increases the capacitance between the sensitive layer and the skin of the human body through the dielectric layer material capable of bearing the ionic liquid, so as to enhance the collected electrocardiosignal.

Among them, because the power supply network is ubiquitous, the power frequency interference of 50Hz is the most common and also the main interference source of the electrocardiosignal. It is introduced in the form of a displacement current, mainly by capacitive coupling of the human body and the input leads of the measuring system, of sufficient intensity to drown out the useful electrocardiosignals. The power frequency interference and the noise in the environment are mainly removed through the reference electrode layer, and meanwhile, because the electronic equipment adopted for signal processing also generates instrument noise, the interference generally has higher frequency characteristics and can be filtered through low-pass filtering mentioned later.

In the embodiment, attenuation of electrocardiosignals generated in the coupling process is reduced through the arrangement of the multilayer composite electrodes, impedance between the sensitive layer and the skin of a human body is reduced, and interference of obtaining the electrocardiosignals in a non-contact mode is effectively avoided, so that effective non-contact electrocardio detection is realized.

Optionally, the sensitive layers include a first sensitive layer and a second sensitive layer in an arch shape, the first sensitive layer and the second sensitive layer are symmetrically arranged, and the first sensitive layer and the second sensitive layer are respectively used as an electrocardiogram positive electrode and an electrocardiogram negative electrode to be connected with the signal processing circuit.

Specifically, in the present embodiment, as shown in fig. 1 to 3, the sensitive layer includes a first sensitive layer and a second sensitive layer in an arch type, and the arch type refers to a shape like "pi". The first sensitive layer and the second sensitive layer are symmetrically arranged and are respectively used as an electrocardio anode and an electrocardio cathode to be connected with the signal processing circuit.

The body posture of people which continuously changes in the actual sleep has influence on the acquisition effect. The sleeping state of the human body has at least three different positions of lying, left side body and right side body, so that the contact area of the human body and the sensor is different, and particularly the quality of signals is obviously interfered by the lying mode. The following influences are considered in the electrode size design: firstly, more noise is introduced due to the overlarge area of the electrode, so that the quality of the detected electrocardiosignal is influenced; secondly, the effective area of the coupling capacitor is reduced due to different positions of people on the bed and the change of sleeping postures when the electrode area is too small. Considering that average shoulder width dimensions of typical adult males and females are around 37.5cm and 35.1cm, respectively, the standard width of a single bed is 90cm, and people lying on their sides generally do not lie in the center or on both side edges of the bed. Based on the above factors, the present embodiment designs the electrode as an arch-shaped electrode with a length of 50cm and two protrusions, so as to solve the problem of the reduction of the equivalent coupling capacitance when the human body lies on the left and right sides.

In combination with fig. 5 to 7, the shapes of the two protrusions are improved, so that more noise caused by overlarge electrode area can be prevented, and the problem of reduction of equivalent coupling capacitance when a human body lies on the left side and the right side is solved.

In this embodiment, the sensitive layer is arranged to comprise the first sensitive layer and the second sensitive layer which are arch-shaped, so that the requirement for the electrocardiograph detection in three different positions of the lying position, the left body and the right body is facilitated, and the effective non-contact electrocardiograph detection is realized.

Optionally, the dielectric buffer layers are distributed at intervals in a lattice form above the first sensitive layer and the second sensitive layer, and the dielectric buffer layers above the first sensitive layer and the dielectric buffer layers above the second sensitive layer are symmetrically arranged.

Specifically, in the present embodiment, the dielectric buffer layers are distributed at intervals in a lattice form above the first sensitive layer and the second sensitive layer, and the dielectric buffer layers above the first sensitive layer and the dielectric buffer layers above the second sensitive layer are symmetrically arranged. The dielectric buffer layers are distributed above the first sensitive layer and the second sensitive layer at intervals in a dot matrix mode, and the problem that equivalent coupling capacitance is reduced when a human body lies on the left side and the right side is solved. Because the first sensitive layer and the second sensitive layer are respectively used as the electrocardio anode and the electrocardio cathode to be connected with the signal processing circuit, the dielectric buffer layer above the first sensitive layer and the dielectric buffer layer above the second sensitive layer need to be symmetrically arranged so as to realize the effective acquisition of electrocardiosignals.

In this embodiment, the dielectric buffer layers are arranged above the first sensitive layer and the second sensitive layer at intervals in a lattice form, so that the problem that the equivalent coupling capacitance of a human body is reduced when the human body lies on the left side and the right side is solved, and the effective collection of the electrocardiosignals is realized.

Optionally, the material of the medium layer capable of bearing the ionic liquid is hydrogel, ionic gel, wet sponge or fabric, and wet tissue.

Specifically, in this embodiment, the material of the dielectric layer capable of supporting the ionic liquid is hydrogel, ionic gel, wet sponge or fabric, or wet tissue, and taking polysaccharide hydrogel (AHS) made of alginate as an example, the AHS is covered on the sensitive layer in a lattice form to reduce attenuation of the electrocardiographic signal generated in the coupling process, and the contained water molecules also reduce impedance. The results of the capacitance measurement experiments show that the capacitance value is increased by 4 times and the total impedance is reduced by 135 times by adding the AHS. The effective service life of the AHS reaches 3 months, the ion moving speed is obviously slowed down due to water loss after the time is exceeded, and the normal detection of the electrocardiosignal is ensured by replacing a new AHS at the moment. Water is used in the preparation of AHS, but the problem of overlarge humidity cannot be caused in the using process, and the long-term use can be ensured.

In the embodiment, the capacitance between the sensitive layer and the skin of the human body is increased through the dielectric layer material capable of bearing the ionic liquid so as to enhance the acquired electrocardiosignals, thereby realizing effective non-contact electrocardio detection.

Optionally, the non-contact electrocardiographic detection multilayer composite electrode system further comprises a film pressure sensor, and the film pressure sensor is used for measuring body positions to determine the sleeping positions of the human body.

Specifically, in this embodiment, the non-contact electrocardiographic detection multilayer composite electrode system further includes a film pressure sensor, and the film pressure sensor is used for measuring a body position to determine a sleeping posture of the human body. The sleeping state of the human body at least has three different positions of lying, left side body and right side body, the different sleeping positions of the human body correspond to the dielectric buffer layers, the sensitive layers and the like at different positions, and the position information in the sleeping process can be recorded according to the triggering of the film pressure sensor.

In the embodiment, the film pressure sensor is arranged to measure the body position, so that the sleeping posture of the human body can be determined.

Optionally, the thin film pressure sensor includes a plurality of pressure sensing units, and the plurality of pressure sensing units are arranged at intervals along the length direction of the sensitive layer.

Specifically, in the present embodiment, the thin film pressure sensor includes a plurality of pressure sensing units, and the plurality of pressure sensing units are arranged at intervals along the length direction of the sensitive layer. As shown in fig. 1, eight pressure sensing units A0-A7 are arranged at intervals along the length direction of the sensitive layer, which is beneficial to accurately determining the sleeping posture of the human body.

In the embodiment, the pressure sensing units are arranged at intervals along the length direction of the sensitive layer, so that the sleeping posture of the human body can be accurately determined.

Optionally, the non-contact electrocardiographic detection multilayer composite electrode system further comprises a substrate layer, the substrate layer is attached to the reference electrode layer, and the substrate layer is used for supporting the dielectric buffer layer, the sensitive layer, the insulating layer and the reference electrode layer.

Specifically, in this embodiment, the non-contact electrocardiographic detection multilayer composite electrode system further includes a substrate layer (the substrate layer shown in fig. 1), the substrate layer is attached to the reference electrode layer, and the substrate layer is used to support the dielectric buffer layer, the sensitive layer, the insulating layer, and the reference electrode layer. Because the stratum basale is direct with the laminating of bed chair, and the stratum basale has accepted most weight of human body, consequently the setting of stratum basale has effectively improved non-contact electrocardio and has detected multilayer combined electrode system's intensity, and then can realize effectual non-contact electrocardio and detect for a long time.

In the embodiment, the substrate layer used for supporting the dielectric buffer layer, the sensitive layer, the insulating layer and the reference electrode layer is arranged, so that the strength of the non-contact electrocardio-detection multilayer composite electrode system is effectively improved, and effective non-contact electrocardio-detection can be realized for a long time.

Optionally, the non-contact electrocardiographic detection multilayer composite electrode system further includes a plurality of adhesive layers, and the plurality of adhesive layers are respectively located between the sensitive layer and the insulating layer, between the insulating layer and the reference electrode layer, and between the reference electrode layer and the substrate layer.

Specifically, in this embodiment, the non-contact electrocardiographic detection multilayer composite electrode system further includes a plurality of adhesive layers, and the plurality of adhesive layers are respectively located between the sensitive layer and the insulating layer, between the insulating layer and the reference electrode layer, and between the reference electrode layer and the substrate layer. Because the connection strength between different layers is low, a bonding layer is required to be arranged to improve the strength of the non-contact electrocardio detection multilayer composite electrode system, and effective non-contact electrocardio detection can be realized for a long time.

In the embodiment, the strength of the non-contact electrocardio detection multilayer composite electrode system is improved by arranging a plurality of bonding layers, so that effective non-contact electrocardio detection can be realized for a long time.

Optionally, the signal processing circuit includes an ac coupling circuit, an instrumentation amplifier, a high-pass filter, an adjustable multiple operational amplifier, a low-pass filter, a mode conversion module, a microprocessor, and a data transmission module, which are connected in sequence, where the microprocessor is configured to generate the electrocardiographic signal, and the data transmission module is configured to transmit the electrocardiographic signal in a wired or wireless transmission manner.

Specifically, in this embodiment, as shown in fig. 3, the signal processing circuit includes an ac coupling circuit, an instrumentation amplifier, a high-pass filter, an adjustable multiple operational amplifier, a low-pass filter, a mode conversion module, a microprocessor, and a data transmission module, which are connected in sequence, where the microprocessor is configured to generate an electrocardiographic signal, and the data transmission module is configured to transmit the electrocardiographic signal in a wired or wireless transmission manner.

The electrocardiosignals firstly pass through a pre-amplification circuit (an instrument amplifier and the like), and the processed signals have the performances of low noise, low drift, low common mode rejection ratio and the like. The electrocardiosignals are mainly interfered by power frequency, myoelectricity and other signals, and can be processed by a related signal adjusting circuit.

Because the electrocardiosignal is weak, multistage amplification is needed, and although the multistage direct coupling direct current amplifier can meet the requirement, the multistage direct coupling direct current amplifier easily causes baseline drift. In addition, the direct current amplifier of the dynamic electrocardiograph cannot adopt multi-stage direct coupling due to the existence of the polarization voltage. Therefore, the high-pass filter can achieve the effect of high-pass filtering while isolating the direct-current signal.

Because the electromagnetic interference is more and more serious, the electrocardiosignals not only have 50Hz power frequency interference, low frequency interference and direct current component interference, but also have serious interference of high frequency harmonic higher than 100Hz in the acquisition process, and therefore low-pass filtering is necessary to be realized through a low-pass filter.

In the embodiment, the conversion from the voltage value to the electrocardiosignal is realized by setting the specific composition of the signal processing circuit, so that various interferences in the electrocardio detection are reduced, and the effective non-contact electrocardio detection is realized.

Optionally, the data transmission module is adapted to be connected to an electrocardiographic data acquisition and display terminal, and the electrocardiographic data acquisition and display terminal is configured to store and analyze the electrocardiographic signals, and display the analyzed electrocardiogram on a display.

Specifically, in this embodiment, the data transmission module is adapted to be connected to an electrocardiographic data acquisition and display terminal, and the electrocardiographic data acquisition and display terminal is configured to store and analyze electrocardiographic signals, and display an analyzed electrocardiogram on the display. With reference to fig. 3 and 4, the data transmission module sends the electrocardiographic signals to the electrocardiographic data acquisition and display terminal in a wired or wireless transmission manner, and after digital filtering and signal feature extraction, the electrocardiographic signals (electrocardiographic signals and vital sign parameter display) are respectively displayed on the display, and after being stored in the memory, the electrocardiographic signals are recorded and stored in a file, and the file can be opened at any time in the later stage to study electrocardiographic information, so that a doctor can make a diagnosis conveniently.

In the embodiment, the electrocardiosignal is stored and analyzed by the electrocardio data acquisition and display terminal, and the analyzed electrocardiogram is displayed on the display, so that the electrocardiosignal is detected in real time and inquired at any time.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.