CN113598786A

CN113598786A - Electrocardio monitoring devices

Info

Publication number: CN113598786A
Application number: CN202111035696.8A
Authority: CN
Inventors: 韩照网; 陈新铭
Original assignee: Qingdao Yasi Biotechnology Co ltd
Current assignee: Qingdao Yasi Biotechnology Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2021-11-05

Abstract

An electrocardiographic monitoring device, comprising: a lead which is contacted with the body of a user to detect and obtain electrocardiosignals, a lead which is used for transmitting the electrocardiosignals obtained by the lead to a data processing end, the acquisition part is arranged at the near end of a lead in a way of connecting the lead in parallel with a lead communication line, the electrocardiosignal is divided into a first electrocardiosignal and a second electrocardiosignal containing the same information at the parallel connection part, the acquisition part converts the first electrocardiosignal into a first processing signal according to an analog-to-digital conversion process based on a first sampling frequency, the data processing end converts the second electrocardiosignal into a second processing signal according to an analog-to-digital conversion process based on a second sampling frequency, the first sampling frequency is configured to be smaller than the second sampling frequency, the first electrocardiosignal and the second electrocardiosignal are analog signals, and the first processing signal and the second processing signal are digital signals.

Description

Electrocardio monitoring devices

Technical Field

The invention relates to the field of electrocardio detection, in particular to an electrocardio monitoring device.

Background

The electrocardiographic detection is a common means for reflecting the diseases of the heart and other internal organs of a human body at present, and a batch of civil electrocardiographic detection equipment is available in large-scale electrocardiographic detection in medical facilities and daily life.

CN206867226U discloses but anti interference heart electrograph inspection device relates to medical appliances technical field, examines test table including the electrocardio, the heart electrograph examines test table front side and installs the lock keyboard, and keyboard lock spool is installed to lock keyboard upside, and swift controller is installed to lock keyboard downside. The interference-resistant electrocardiogram checking device has complete checking function, can avoid interference in the electrocardiogram signal checking process, detects the motion condition of a patient, reduces and eliminates the detection interference generated by motion, and provides accurate diagnosis and detection data for medical staff.

Common civil devices generally adopt a single-lead mode, and have the advantages of small data volume and less calculation required for interference elimination, so that the common civil devices become the conventional choice. However, the amount of information contained in the detection result of general single lead electrocardiographic detection is the least, only some most basic electrocardiographic detection items can be realized, and the problems of all or further symptoms of a user cannot be reflected, and equipment adopting 3 leads, 8 leads or even 12 leads is often used in hospitals, the equipment is generally expensive in materials and comprehensive in anti-interference protection, and the signal interference of multi-lead detection can be limited to a reasonable range by benefiting from the signal shielding effect of a special detection room and the guidance of a professional doctor. However, in the civil field, because the use environment is uncertain and the user action is unguided, the signal interference generated by the multi-lead detection is very serious, if the clutter signals are to be eliminated or prevented, a large-scale device is needed, which is not different from the increase of the cost and is not convenient for the user to carry.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents when making the present invention, but the space is not limited to the details and contents listed in the above, however, the present invention is by no means free of the features of the prior art, but the present invention has been provided with all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.

Disclosure of Invention

In order to solve at least a part of the problems in the prior art, the invention provides an electrocardiogram monitoring device, which comprises: a lead which is contacted with the body of a user to detect and obtain electrocardiosignals, a lead which is used for transmitting the electrocardiosignals obtained by the lead to a data processing end, the acquisition part is arranged at the near end of a lead in a way of connecting the lead in parallel with a lead communication line, the electrocardiosignal is divided into a first electrocardiosignal and a second electrocardiosignal containing the same information at the parallel connection part, the acquisition part converts the first electrocardiosignal into a first processing signal according to an analog-to-digital conversion process based on a first sampling frequency, the data processing end converts the second electrocardiosignal into a second processing signal according to an analog-to-digital conversion process based on a second sampling frequency, the first sampling frequency is configured to be smaller than the second sampling frequency, the first electrocardiosignal and the second electrocardiosignal are analog signals, and the first processing signal and the second processing signal are digital signals.

The implementation realizes the effects of low-frequency sampling on the lead close to the lead end and using the low-frequency sampling for signal noise evaluation and/or signal noise elimination during subsequent formal electrocardiosignal processing, has the advantages that the characteristic that the noise interference experienced by the electrocardiosignals just generated from the lead is not high is utilized, a first processing signal in a digital format which can reflect real and correct electrocardiosignals is obtained by adopting low-frequency sampling, the first processing signal which is taken as a reference is changed into a digital form which can be stably interfered with so as to ensure the stability of the reference, the anti-counterfeiting effect of a line can be realized by utilizing the characteristic of digital encryption, in addition, due to the adoption of the analog-digital conversion process of low-frequency sampling, the working power consumption of an acquisition part close to the lead end of the lead is low, the data processing quantity is low, the data storage throughput is low, and a better reference signal can be obtained on the premise of greatly reducing the volume and the power consumption of related elements of the acquisition part Particularly for the types of the lead parts with more leads, the acquisition part is arranged on the lead of each lead, the whole volume, the data processing amount and the power consumption of the acquisition part are not greatly increased, and the manufacturing cost of the lead is controlled in a reasonable range. In particular, in this case, the energy supply of the acquisition unit operating with low power consumption may not come from the data processing terminal, but may be supplied autonomously by the micro battery, thereby further avoiding additional interference due to the power supply of the data processing terminal.

Preferably, the data processing end is configured to accept at least the first processed signal and the second cardiac signal, and to compare the second processed signal with the first processed signal in the co-time domain to obtain a noise evaluation value and/or to cancel inter-point noise in the second processed signal based on the first processed signal.

This scheme is used for judging or the edulcoration to the clutter of the second processing signal that the details are abundanter through the less comparatively high-quality first processing signal that receives of interference that will be close to leading with digital signal's form, make the less part of processing work can place in the wire department that leads nearer apart from, can not cause the portion cost of leading, the consumption, the collection to accurate data has been realized under the condition that the volume increases in a large number, the work that will need a large amount of calculations is placed at data processing end, make the circuit divide more rationally, and eliminate or predict the interference condition at follow-up wire and interface site through referring to, convenience of customers changes corresponding wire rod or obtains more accurate data. Under the condition of eliminating noise between points, the problem of signal interference caused by the movement of a lead can be quantified, so that a user can do slight movement, and the self behavior is limited according to the noise evaluation value, so that the user can use the device in the slight movement process of daily life without completely keeping a rest state all the time.

Preferably, the acquisition part is provided with a first memory, the first memory stores the first processing signal with a timestamp within a first preset time length to form a first processing data packet, and the first processing data packet is sent to the data processing terminal through a wire after the preset time length is over.

The acquisition part is provided with the storage device, so that data in preset time can be temporarily stored in the acquisition part, and due to the adoption of a low-frequency sampling mode, the capacity, the throughput and the volume of the storage device can be realized as a small selection, the influence on the overall structure complexity, the volume and the weight of the lead is small, the use and the manufacturing cost cannot be greatly increased, and the use of a user is facilitated.

Preferably, the data processing end is provided with a second memory, and the data processing end stores the second processing signal with a timestamp according to a second preset time length to form a second processing data packet, wherein the second preset time length is configured to be longer than the first preset time length.

The mode of the arrangement is that the part with larger data processing amount and larger storage requirement is placed at the data processing end with stronger calculation and power supply functions, so that the content contained in the second processing signal is more, and in addition, the second preset time length is configured to be larger than the first preset time length, so that the time generated by the first processing signal and the time difference formed between the transmission time and the second processing signal with the same content are considered, so that the second processing signal at least comprises the whole range of the first processing signal.

Preferably, after the data processing end obtains the first processed data packet, the sampling data in the first data processing packet and the sampling data in the second data processing packet are respectively spread according to respective timestamps and the time difference between the first processed data packet and the second processed data packet is eliminated by means of time shift, so as to achieve comparison with the time domain.

Preferably, the value of each of the first processed signals in the first processed packet after the time difference is eliminated is taken as a sampling point, the second processed signal matching the sampling point within the second processed packet is formed as a reference point, and other data obtained based on the second sampling frequency is provided between adjacent reference points.

Preferably, the part of the other data exceeding the reference point values on both sides thereof is classified as clutter data, spike waves with abrupt amplitude change in the other data are classified as clutter data, and the quality value of the clutter data is evaluated to form a noise evaluation value.

Preferably, the variation trend of the reference point is used as a template, and after removing the clutter data, a curve which is consistent with that described by the first processing signal and has more data details is restored by means of data fitting so as to eliminate the noise between the points.

Preferably, the collection portion contains a micro battery as a power supply source, and the collection portion is configured to obtain an energy source from the micro battery only.

Preferably, the wires of all leads are assembled onto several pins of a socket, the socket forming a communication connection with an access interface of the data processing side, wherein the definition of the pins by the access interface is defined such that the wires of each lead can only generate a communication connection through one pin with a corresponding definition.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a pin portion structure according to the present invention;

FIG. 3 is a schematic diagram of data flow conversion according to the present invention;

in the figure: 100. a data processing terminal; 200. accessing an interface; 300. a lead section; 310. a socket; 320. a conduit; 330. a wire; 340. a lead; 350. marking; 400. a pin; 500. a collecting part; 001. a first cardiac signal; 002. a second cardiac signal; 003. a first processed signal; 004. a second processed signal; 005. a first process packet; 006. second processing the data packet; 007. electrocardiosignals.

Detailed Description

In the description of the present invention, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" in the description should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integrated connection; the connection can be mechanical connection or electric connection, and also can be a combination of mechanical connection and electric connection; the electronic components can be installed by using a circuit of a lead, and can also be designed by using a simplified circuit board in modes of integration and the like. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific applications.

Fig. 1 provides an electrocardiograph monitoring device including at least a data processing terminal 100, an access interface 200, and a lead unit 300. The data processing end at least comprises a power supply and a processor with stronger processing capacity. The access interface 200 is used for connecting the lead portion 300 to obtain the external input electrocardiographic signal 007, and preferably, the access interface 200 according to the present invention employs a TYPE-C interface structure and related interface protocols.

It can be known from the above that the access interface 200 adopts a TYPE-C structure and a communication protocol, and at least has a plurality of different pins 400 (all pins are not shown in fig. 2), the common and standard number is 12, the present invention specifically limits each pin 400, especially the pin 400 of the access interface 200, so that it corresponds to twelve detection points of electrocardiographic detection one by one, for example, the pin 400 with the number of 1 can only connect the lead 340 for detecting the left arm potential of the human body, the pin 400 with the number of 2 can only connect the lead 340 for detecting the right arm potential of the human body, and so on, the positions of 12 leads 340 for electrocardiographic detection of human body are respectively divided into 6 limb leads 340 (i, ii, iii, aVR, aVL, aVF) and 6 chest leads 340 (V1-V6), which all have different connection positions on the human body, and the combination of the leads 340 with different numbers can detect different electrocardiographic parameters, in the conventional detection modes of 3-lead 340, 6-lead 340, etc., each different lead 340 is connected to the outside of the human body through a wire 330, the wire 330 is used for conducting human body potential signals, and only one of the wires 330 led out from each lead 340 in all the pins 400 is the corresponding pin 400 with signal connection feedback according to the above-mentioned provision for the pins 400 of the access interface 200. Therefore, the position of each pin 400 and the corresponding lead 340 can be fixed by arranging the pins 400 of the access interface 200 fixedly, and then 1-12 leads 340 are assembled according to the requirement of electrocardiographic detection to form different lead parts 300, for example, the lead 330 of the 3 lead 340 is assembled into one lead part 300, the lead part 300 further comprises a socket 310, the socket 310 is configured to be at least capable of being plugged with the access interface 200 to form data communication and physical connection, so that the relationship between the socket 310 and the access interface 200 can be configured to be the relationship between the male head and the female head of the TPYE-C interface. Accordingly, when assembling the plurality of conductors 330, the conductors 330 are accordingly connected into the sockets 310 according to the locations of the conductors 330 on the corresponding pins 400 of the access interface 200. Specifically, the pins 400 between the access interface 200 and the socket 310 are in one-to-one correspondence, for example, the pin 400 No. 1 of the access interface 200 corresponds to the pin 400 No. 1 of the socket 310, and when data transmission is formed by plugging, the pins 400 of the two are also correspondingly connected. Therefore, the present invention achieves an anti-counterfeit function, that is, the pins 400 of the access interface 200 are specially defined, and when the lead part 300 is manufactured, the positions of the wires 330 of the leads 340 are correspondingly assembled to the corresponding interface pins 400 according to the positions of the specially defined pins 400, so that only the correctly manufactured lead part 300 can generate the communication signal connection with the access interface 200, otherwise, the wrong corresponding pin 400 will not generate the information interaction, thereby achieving the effect of preventing the counterfeit.

Preferably, in order to facilitate the user to distinguish the lead parts 300 assembled from different leads 340, a mark 350 for marking the lead 340 composition is provided on each lead 340 assembled from different numbers of different kinds of leads 340, specifically, the multiple leads 330 participating in the assembled leads 340 are all collected in the same conduit 320 (shown in fig. 1), the mark 350 may be provided on the conduit 320 by printing, hot stamping, carving, etc., the content of the mark 350 is mainly the lead 340 composition, for example, the combination of V1-V3 leads indicating that a certain lead part 300 is a chest lead 340. The design enables a user to conveniently identify the composition and the function of the leads 340 of each lead part 300, basically has the effect that the user can use the leads by seeing the mark 350, greatly reduces the learning cost for the user to use, and leads parts 300 which are manufactured in advance in factories and formed by any number and any kind of arrangement combinations of all 12 leads 340 can be directly selected by the user to use, thereby avoiding the problems of misoperation and rising learning cost caused by the wiring of the user according to the used leads 340.

Preferably, the interface supports customized customization mode in case of some non-standard connections, and in particular, by reallocating the definition of the pins 400 to certain positions and types of pins 400, the pins 400 can be subjected to the operation of functional reorganization, for example, the pins 400 for USB3.0 can be realized to transmit other data signals or supply power by reallocating the functions of the pins 400. With this embodiment, the definition of the plurality of pins 400 needs to be reassigned to function in transmitting the signals of the different cardiac leads 340.

Preferably, the pin 400 definition layout of the access interface 200 adopted by the present embodiment is implemented by simultaneously defining the pins 400 corresponding to the leads 340 capable of being combined with each other to form the complete lead number requirement in the asymmetric pin 400 positions of the two pin 400 combinations. Specifically, in the present embodiment, connection interfaces of the lead 340 with at most 12 bits are respectively defined on the first pin 400 combination and the second pin 400 combination, each pin 400 combination has at least a portion of defined pins 400 corresponding to the 12-bit lead 340, such defined pins 400 corresponding to the lead 340 can be referred to as lead 340 pins, and undefined pins 400 are referred to as empty pins, it is noted that the difference between the pin 340 pins and the empty pins in the structure of the pin 400 is whether there is a corresponding wire 330 soldered, and the empty pins have no soldered wires 330, so that the connection requirements of the circuit and the communication cannot be realized. While the above expression can also be described as that the leads 340 corresponding to the number of the required leads 340 are distributed on at least one of the first lead 400 combination and the second lead 400 combination, preferably, when the number of the required leads 340 is the maximum 12-bit leads 340, the leads 340 are distributed on two lead 400 combinations respectively. For example, as shown, pin 400 numbered a1 is defined to accept n (rl) lead 340, a4 is defined to correspond to f (ll) lead 340, B4 is defined to correspond to C2 lead 340, and so on. The lead 340 according to the present embodiment is configured to have different content defined by a certain set of symmetric pins 400 in two pin 400 combinations that are symmetric about the center, for example, the pin 400 numbered a4 is defined as f (ll), and the corresponding pin 400 numbered B4 is defined as corresponding to the lead 340 numbered C2, and is different from the pin 400 numbered a4, that is, the jack 310 used in the lead 340 portion in the present embodiment can only be connected to the access interface 200 in one plugging direction to obtain correct communication connection, for example, the pins f (ll) and C2 are connected to the a4 and B4 positions of the jack 310 through the conducting wire 330, respectively, and the connection with the access interface 200 through the jack 310 makes the a4 position of the jack 310 correspond to the a4 position of the access interface 200, and correspondingly, the pin B4 position corresponds, and correct data communication can be formed for the two leads 340. If the socket 310 is inserted into the access interface 200 in the reverse direction, the position a4 of the socket 310 corresponds to the position B4 of the access interface 200, and the position B4 of the socket 310 corresponds to the pin 400 a4 of the access interface 200, then the lead 340 corresponding to f (ll) of the lead 340 is connected to the pin 400 defined as receiving the lead 340C 2 on the access interface 200, and at this time, a data failure or a signal occurs, and at this time, the electrocardiographic detection cannot be performed.

Therefore, the embodiment realizes an anti-counterfeiting effect. Specifically, in the present embodiment, a TYPE-C interface which is currently relatively complete and more efficient in data transmission is used as an improvement basis, a full-port C interface is used to meet the requirement of the 12-bit ecg lead 330, and by randomly selecting 12 pins 400 from the full 24 pins 400 as a data transmission interface, only in the process of selecting the pins 400, theoretically, there are 2704156 selection schemes C2412, and if a TYPE of receiving the corresponding lead 340 is subsequently defined for each selected pin 400, theoretically, there are also a 1212-479001600 arrangement schemes. In summary, there are a total of C2412 × a1212 — 1295295050649600 from the selection of pins 400 to the scheme defining each pin 400 according to the lead 340 when designing or manufacturing the interface, and these possible choices can be referred to as the pin 400 pool, and it can be seen that the pin 400 pool selection base is very large, and the pins 400 in the size of tens of millions select enough manufacturers to select one of the pin 400 combinations as the production template of the interface during production, so that the produced lead 330 and interface will be difficult to be copied by other imitators, because the probability of overlapping with the pin 400 combination selected by the manufacturer after random simulation is very small, and therefore, the pins 400 produced by the pin 400 production scheme selected by the embodiment will be difficult to be imitated, and the lead 330 produced by the imitators cannot be connected to the product produced according to the embodiment and form data connection.

One problem that electrocardiographic detection has for a long time is that electrocardiographic signals 007 are usually very weak, the strength of electrocardiographic signals 007 obtained by detection at the end 340 of leads is not high, and various electromagnetic interference, power frequency interference and other influences are caused in the process of being transmitted to an interface through a circuit and then to a host, so that the difficulty of the host in processing clutter is greatly improved, and sometimes, correct electrocardiographic signals 007 are difficult to distinguish from complex signal noises, and the electrocardiographic detection fails or the detection result is likely to deviate from the normal level greatly.

At present, a lead 330 connected with a lead 340 adopted by an electrocardiograph device has been developed for a period of time, has a certain mature design, and generally has a certain improvement on the design and manufacture aspects of a circuit in the aspect of interference prevention, for example, the lead 340 produced by Yongkanda company and capable of being adapted to electrocardiographs such as Japanese photoelectricity, Coleman, Sanrui and the like adopts the circuit design wrapped by ABS-PVC alloy, so that the influence of external electromagnetism and power frequency interference on signal transmission in the circuit is greatly reduced. The said wire is suitable for large-scale electrocardio equipment in medical facilities, and is similar to civil equipment, and has certain anti-interference measures. However, the quality of the signal transmission still suffers due to the physical or penetrating electromagnetic disturbance of the line, the quality or aging of the wire itself, and the mutual interference between the pins 400 at the interface. At present, the process of electrocardiographic detection usually teaches a user to keep a silent state during formal electrocardiographic detection, wherein the silent state means that the user needs to basically keep still, breathe stably and have calm emotion, so that interference brought to electrocardiographic detection signal transmission by one end of the user is reduced, however, specific influence of slight movement of the user on electrocardiographic detection signals is not quantitatively analyzed, slight actions do not have too much influence on electrocardiographic detection results, and if the user is forced to keep the silent state, the user can generate uncomfortable counter emotion, and the use comfort of the electrocardiographic detection equipment is not improved conveniently.

Therefore, it is preferable that the present invention is provided with an acquisition part 500 on the conducting wire 330 of each lead 340, the acquisition part 500 is close to the lead 340 connected to the body of the user on the communication link, specifically, the electrocardiosignal 007 obtained by the detection of the lead 340 is started, and the transmission of the signal in the conducting wire 330 is up to the path from the access interface 200 to the data processing end through the jack 310, that is, the communication link. As can be seen from the above, the longer the line is during the transmission of the signal in the line, the more the interfered part is lost in the information contained in the signal, and especially the interference and noise generated through the socket 310 and the switching part of the access interface 200 easily submerge the weak electrocardiographic signal 007. The signal received by the acquisition unit 500 disposed close to the lead 340 on the communication link is less interfered, and clear electrocardiographic data can be obtained in addition to the noise floor, so that the effect of adhesion monitoring can be realized in the acquisition unit 500 by transmitting the copied electrocardiographic data to the acquisition unit 500. Specifically, the acquisition part 500 is arranged in parallel on the communication link of the wire 330 in a parallel manner, here, the signal input end of the acquisition part 500 and one end of the wire 330 parallel thereto form two signal collection ends, which may be referred to as a first signal end and a second signal end, the electrocardiographic signal 007 generated on the lead 340 is an analog signal, the electrocardiographic signal 007 is transmitted to the wire 330 through the lead 340, the two electrocardiographic signals 007 containing the same information are divided at the position of the acquisition part 500, one of the two electrocardiographic signals flows to the acquisition part 500 through the first signal end, the other one of the two electrocardiographic signals flows to the remaining wire 330 through the second signal end and enters the data processing end, and the two signals are referred to as a first electrocardiographic signal 001 and a second electrocardiographic signal 002, respectively, as shown in fig. 3.

The acquisition part 500 is configured to be capable of processing the first cardiac signal 001 inputted therein into a first processed signal 003 containing cardiac information in a digital form according to an analog-to-digital conversion process, wherein the analog-to-digital conversion process is implemented based on a subdivision process of amplification, filtering, sampling and quantization. The amplification step is to amplify the analog signal, so that the original electrocardiographic signal 007 fluctuating in a small range is amplified to a range which can be detected by the module conversion circuit. The filtering is to limit the bandwidth filtering of the amplified first signal to a limited bandwidth that can be accepted by the subsequent sampling step. The sampling process is to acquire a continuous data point with respect to time arrangement by collecting a continuously changing signal of the first electrocardiosignal 001 through an analog-to-digital conversion circuit according to a certain specified time in principle, wherein the specified time or the sampling frequency design of the sampled process is a more critical issue. According to the calculation formula Fs of the sampling frequency, where Fs is the sampling frequency, N is the number of sampling points, and df is the frequency resolution, which indicates the minimum interval for distinguishing two different frequency signals in the application, if desired, the smaller the value is, the better the number of sampling points is, the larger the number of sampling points is, the more information in the retained analog signal is, but this results in a large amount of calculation and power consumption of the analog-to-digital conversion circuit, which is unacceptable for the acquisition unit 500 applied in the present invention. Therefore, the embodiment uses a lower sampling frequency for analog-to-digital conversion, and the sampling frequency can be referred to as a first sampling frequency. The quantization is to compare and convert the sampled data points according to a coding table preset in the circuit, and finally convert the data of each data point into a digital form described by a binary system, and such a signal after analog-to-digital conversion is referred to as a first processed signal 003. Since the first sampling frequency is low, the amount of information contained in the generated first processed signal 003 is small, but since it is close to the lead 340 of the detected electrocardiographic signal 007, it is considered that the influence of interference such as noise and clutter on the contained information is small, and if the whole first processed signal 003 is restored, the restored electrocardiographic information is compared with electrocardiographic information collected at the lead 340.

Therefore, the embodiment outputs the first processed signal 003 to the conducting wire 330 through the output end of the collecting part 500, and transmits to the socket 310 at the same time with the second cardiac signal 002 in the conducting wire 330, and finally enters the data processing end. The first processed signal 003 is a digital signal and the second cardiac signal 002 is an analog signal, so that both schemes for transmission in the wire 330 require the use of a modem, which can be implemented on a tiny chip scale, such as an AD5700-1BCPZ-R5 modem chip, with a size of only about 4 × 4mm, and can be embedded in the acquisition unit 500 and/or in the wire 330. Or in other embodiments, the signal output terminal of the acquisition part 500 is directly communicatively coupled to one of the pins 400 of the socket 310 not occupied by the lead 330, and according to the condition of the maximum lead 340, 12 pins 400 of the full-port socket 310 are occupied, and the leads 330 connected to the 12 leads 340 respectively have the acquisition parts 500 occupying the remaining 12-bit pins 400. Compared with the analog signal, the digital signal has the discrete characteristic obtained by sampling, so that the tolerance of the digital signal affected by noise is greatly improved, and the digital signal can be restored in a lossless manner by utilizing a decision regeneration mode at a signal receiving end, so that the first processed signal 003 can be transmitted into the data processing end in a nearly lossless state. In other embodiments, an encryption chip is additionally arranged before the signal output of the acquisition unit 500 to encrypt the output first processed signal 003, the data processing end receives the encrypted first processed signal 003 and decodes the first processed signal by using a preset decryption program to obtain a correct first processed signal 003, wherein an encryption and decryption key can be used as judgment data for preventing outsiders from imitating the lead 340, and the first processed signal 003 can be conveniently encrypted due to the adoption of a digital signal mode, and the effect of further preventing counterfeiting is realized by using an encryption process. Similarly, the encryption chip size utilized above is small, for example, ATSHA204A-SSHDA-B chip size is in millimeter order, and can also be embedded in the circuit.

Through the docking of the socket 310 and the access interface 200, the first processed signal 003 and the second cardiac signal 002 may be communicatively entered into the data processing terminal. The component for performing data processing on the electrocardiographic signal 007 to obtain the final required complete electrocardiographic detection result is referred to as a data processing end 100, and the data processing end 100 is configured to at least receive the first processed signal 003 and the second electrocardiographic signal 002, and can compare the second electrocardiographic signal 002 converted into the second processed signal 004 in the form of digital signal with the first processed signal 003 in the same time domain to obtain a noise evaluation value and/or eliminate inter-point noise in the second processed signal 004 based on the point contrast acquired by the first processed signal 003. The process of generating the second processed signal 004 by the data processing end 100 is similar to the process of generating the first processed signal 003 by the analog-to-digital conversion process, but the difference is that in order to obtain a signal with a large amount of information from the original electrocardiographic data, i.e. the second electrocardiographic signal 002, when the second electrocardiographic signal 002 is sampled, a second sampling frequency with a higher sampling frequency is selected, i.e. the second sampling frequency is higher or far higher than the first sampling frequency. The design firstly needs to obtain original data with more detailed information content to ensure the integrity and the credibility of the electrocardio detection data when the electrocardio data is processed, and secondly, the data processing end 100 can be matched with a processor with strong data processing capacity and a power supply capable of providing stable and high-flux electric power.

Since the transmission and collection unit 330 has a time delay property for converting the first electrocardiosignal 001 into the first processed signal 003, and the first processed signal 003 and the second electrocardiosignal 002 arriving at the data processing terminal 100 at the same time are not identical in time sequence, but the first processed signal 003 is slightly delayed from the second electrocardiosignal 002, the collection unit 500 and the data processing terminal 100 are both provided with memories, which may be referred to as a first memory and a second memory, respectively. The first memory stores the first processed signal 003 with a time stamp for a first preset duration to form a first processed data packet 005, and sends the first processed data packet 005 to the data processing terminal 100 via the conducting line 330 after the preset duration is over. The data processing end 100 stores the converted second processing signal 004 according to a second preset time length to form a second processing data packet 006 with a timestamp, after the data processing end 100 obtains a first processing data packet 005, the sampling data in the first data processing packet and the sampling data in the second data processing packet are respectively expanded according to the respective timestamps, and a time difference formed by the first processing data packet 005 and the second processing data packet 006 is eliminated in a time translation mode, the scheme for eliminating the time difference is that the sampling data in the first processing data packet 005 is arranged by taking the change of the timestamp as a vector, the time change is equivalent to an independent variable, the sampling data corresponding to the timestamp is equivalent to a dependent variable, the second processing data packet 006 is similarly expanded, the second preset time length is set to be longer than the first preset time length, and therefore the second processing data packet 006 collected in the second preset time length theoretically contains the first processing data packet 005 The entire content of the sample data is sampled, so that the corresponding points with the same value can be found in the second process data packet 006 by time-shifting the sample data in the first process data packet 005. Or in the case of certain interference, the displacement matching on the image may also be performed by fitting a wave curve, and after matching, reference points are formed in the second processed data packet 006, where the reference points are sampling points in the first processed data packet 005, and the reference points and the sampling points are values of single data of the first processed signal 003 and the second processed signal 004 or point system expressions thereof in the coordinate graph. When the matching or correspondence is generated, the second processed packet 006 is divided into several segments according to each reference point of the time stamp interval, and each segment has finer data obtained based on a higher sampling frequency in addition to the reference point data that coincides with the sampling point data in the first processed packet 005. According to the continuous and non-abrupt change trend of the curve in the electrocardio change process, the parts of the other data exceeding the values of the reference points at the two ends of the section where the other data are located can be classified into clutter data, sharp spikes with a large amount of abrupt change amplitude values in the other data are classified into the clutter data, and the noise evaluation value is obtained by evaluating the quality value of the clutter data. Specifically, the good and bad values are obtained by differentiating the number and distribution of the spike waves and the number and distribution of other data points exceeding the reference point with a preset reference value, the evaluation of the good and bad values can be from a preset score standard, if the differentiated good and bad values are not higher than a preset unqualified standard, the noise anti-interference level of at least the signal transmission is basically qualified, preferably, a plurality of score standards such as unqualified, qualified, good, excellent and the like can be set, the score and the judgment scheme can be obtained by experiments or obtained by judgment and balance of professionals, and finally a noise evaluation value is given. By analogy, by comparing the entire second processing packet 006 with the first processing packet 005, an overall evaluation of the interference with the communication line in which the wire 330 is located, that is, the above-described noise evaluation value, which can be used to guide the user in selecting whether to replace the wire 330, repair the interface portion, or replace the reference source of the usage environment, can be obtained. The elimination of the point-to-point noise in the second processed signal 004 based on the point acquisition comparison of the first processed signal 003 uses the variation trend of the reference point as a template, and after the clutter data is marked and removed in the above manner, a curve having more data details and being described by the first processed signal 003 is restored by means of data fitting. The curve can be used for subsequent processing of the electrocardiosignals 007 to obtain an electrocardiogram curve with strong anti-interference performance and high reducibility. The first predetermined duration may be set to 1 minute, and the second predetermined duration may be set to 1 minute with a delay of seconds, which may be determined according to the transmission delay of the wire 330 and the formation of the first processed packet 005 and the transmission delay time, and is at least greater than the sum of the delay times.

Preferably, the present embodiment also provides another scheme for automatically aligning the time stamps of the first process data packet 005 and the second process data packet 006. Specifically, when the acquisition unit 500 is divided into two, the electrocardiographic signal 007 marks a first time stamp on the end of each of the first electrocardiographic signal 001 and the second electrocardiographic signal 002 with a marker, and the first time stamp indicates that a signal segment is cut from the beginning. The marker is internally provided with a timing crystal oscillator, and a second time stamp is marked on the tail parts of the first electrocardiosignal 001 and the second electrocardiosignal 002 at the timing of finishing timing, wherein the second time stamp indicates that the signal section is stopped to be intercepted from the time. The first timestamp and the second timestamp can be transmitted together with the first electrocardiosignal 001 and the second electrocardiosignal 002 according to the parallel data packet mode, so that the first electrocardiosignal 001 and the second electrocardiosignal 002 respectively intercepted by the first timestamp and the second timestamp can be ensured to be consistent, and the acquisition part 500 and the data processing terminal 100 retain the first timestamp and the second timestamp to determine the starting and ending time of the two data packets when the first electrocardiosignal 001 and the second electrocardiosignal 002 are processed and stored to form the first processing data packet 005 and the second processing data packet 006. Even if the first processed data packet 005 is delayed in time to reach the data processing end 100, the data processing end 100 can still align the data in the two data packets according to the correct time according to the marks of the first time stamp and the second time stamp. Preferably, the marker may not transmit a timestamp, but may transmit two types of marking data with a time difference, such as a character, a definition instruction, and the like, and since the acquisition unit 500 and the data processing terminal 100 both use a timestamp method when acquiring data, the marking data is only used for marking the start and the end of a data segment, and the specific timestamp may be implemented by the timestamps carried by the first processed data packet 005 and the second processed data packet 006, and the marking data is used for marking the data used for marking a certain timestamp as start data or end data.

The implementation realizes the effects of low-frequency sampling on the lead 330 near the end of the lead 340 and using the low-frequency sampling for signal noise evaluation and/or signal noise elimination when the low-frequency sampling is used for subsequent formal electrocardiosignal 007 processing, has the advantages that the characteristic that the noise interference suffered by the electrocardiosignal 007 when the electrocardiosignal 007 is just generated from the lead 340 is not high is utilized, the first processing signal 003 which can reflect the digital format of the true and correct electrocardiosignal 007 is obtained by adopting the low-frequency sampling, the first processing signal 003 which is taken as the reference is changed into a digital form which can stabilize the anti-interference so as to ensure the stability of the reference, the anti-counterfeiting effect of the line can be realized by utilizing the digital encryptable characteristic, in addition, due to the adoption of the analog-to-digital conversion process of the low-frequency sampling, the acquisition part 500 near the end of the lead 340 of the lead 330 has low working power consumption, low data processing amount and low data storage throughput, the better reference signal can be obtained on the premise of greatly reducing the volume and power consumption of the related components of the acquisition part 500, and particularly for the types of the lead 340 parts with more leads 340, the acquisition part 500 is arranged on the lead 330 of each lead 340, so that the overall volume, data processing capacity and power consumption are not greatly increased, and the manufacturing cost of the lead 330 is controlled in a reasonable range. In particular, in this case, the power supply of the acquisition part 500 operating with low power consumption may not come from the data processing terminal 100, but may be autonomously supplied by the micro battery, thereby further avoiding additional interference due to the power supply of the data processing terminal 100.

It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. An electrocardiographic monitoring device, comprising:

a lead (340) that is contacted to the body of the user to detect and obtain an electrical cardiac signal (007),

a lead (330) for transmitting the cardiac electrical signal (007) obtained by the lead (340) to a data processing terminal (100),

a data processing terminal (100) which obtains and processes the electrocardio signal (007) as an electrocardio detection result,

it is characterized in that the preparation method is characterized in that,

an acquisition part (500) is arranged at the proximal end of the lead (330) which is connected to the lead (340) in a communication way in parallel with the communication line of the lead (330), the electrocardiosignal (007) is divided into a first electrocardiosignal (001) and a second electrocardiosignal (002) containing the same information at the parallel connection part, the acquisition section (500) converts the first cardiac signal (001) into a first processed signal (003) according to an analog-to-digital conversion process based on a first sampling frequency, the data processing terminal (100) converts the second cardiac signal (002) into a second processed signal (004) according to an analog-to-digital conversion process based on a second sampling frequency, wherein the first sampling frequency is configured to be smaller than a second sampling frequency, the first cardiac electric signal (001) and the second cardiac electric signal (002) are analog signals, the first processed signal (003) and the second processed signal (004) are digital signals.

2. The monitoring device according to one of the preceding claims, wherein the data processing terminal (100) is configured to be able to accept at least the first processed signal (003) and to be able to compare the second processed signal (004) with the first processed signal (003) in the time domain to obtain a noise evaluation value and/or to cancel inter-point noise in the second processed signal (004) against the first processed signal (003).

3. The monitoring device according to one of the preceding claims, wherein the acquisition unit (500) is provided with a first memory, wherein the first memory stores the first processed signal (003) time-stamped for a first predetermined period of time to form a first processed data packet (005), and wherein the first processed data packet (005) is transmitted to the data processing terminal (100) via the line (330) after the predetermined period of time has elapsed.

4. The monitoring device according to one of the preceding claims, wherein the data processing terminal (100) is provided with a second memory, and the data processing terminal (100) performs a time-stamped storage of the second processed signal (004) according to a second preset time length to form a second processed data packet (006), wherein the second preset time length is configured to be longer than the first preset time length.

5. The monitoring device according to one of the preceding claims, wherein after the data processing terminal (100) obtains the first processed data packet (005), the sampled data in the first data processing packet and the sampled data in the second data processing packet are respectively expanded according to their respective timestamps and the time difference between the first processed data packet (005) and the second processed data packet (006) is eliminated by means of time shift, so as to achieve the comparison in the time domain.

6. The monitoring device according to one of the preceding claims, wherein the value of each first processed signal (003) in the first processed data packet (005) after the elimination of the time difference is taken as a sampling point, and a second processed signal (004) matching the sampling point within the second processed data packet (006) is formed as a reference point with other data obtained based on a second sampling frequency between adjacent reference points.

7. The apparatus according to any of the preceding claims, wherein the portions of the other data that exceed the reference point values on both sides thereof are classified as clutter data, spike waves that produce abrupt changes in amplitude in the other data are classified as clutter data, and the noise evaluation value is evaluated by evaluating the merit value of the clutter data.

8. The monitoring device according to one of the preceding claims, wherein, using the trend of the reference points as a template, after removing the clutter data, a curve with more data details is restored by means of data fitting to achieve the elimination of the inter-point noise, which is described by the first processed signal (003).

9. The device according to one of the preceding claims, wherein a micro battery is contained in the harvesting portion (500) as a power supply, the harvesting portion (500) being configured to obtain a source of energy only from the micro battery.

10. Monitoring device according to one of the preceding claims, characterized in that the wires (330) of all leads (340) are assembled onto several pins (400) of a socket (310), the socket (310) forming a communication connection with an access interface (200) of a data processing terminal (100), wherein the definition by the pins (400) defining the access interface (200) is such that the wires (330) of each of the leads (340) can only generate the communication connection by having one pin (400) correspondingly defined.