CN113057638A - Limb conduction and central potential signal acquisition circuit, ECG signal acquisition system and method - Google Patents

Abstract

The invention discloses a limb conduction and central potential signal acquisition circuit, an electrocardiosignal acquisition system and a method. The system comprises: the chest lead signal acquisition circuit comprises at least three signal acquisition electrodes, a chest lead signal acquisition circuit, a differential circuit and a central potential signal acquisition circuit; the signal acquisition electrodes are connected with the limb conduction signal input ends in a one-to-one correspondence manner; the first input end of the differential circuit is connected with the output end of the central potential signal acquisition circuit, the second input end of the differential circuit is connected with the output end of the chest lead signal acquisition circuit, and the output end of the differential circuit is used as the output end of the electrocardiosignal acquisition system. By the electrocardiosignal acquisition system provided by the technical scheme of the embodiment of the invention, the anti-interference capability and the signal accuracy of electrocardiosignal acquisition are improved.

Description

Translated fromChinese

肢导及中心电位信号采集电路、心电信号采集系统及方法Limb conduction and central potential signal acquisition circuit, ECG signal acquisition system and method

技术领域technical field

本发明实施例涉及及医用心电信号监护技术领域，尤其涉及一种肢导及中心电位信号采集电路、心电信号采集系统及方法。Embodiments of the present invention relate to the technical field of medical ECG signal monitoring, and in particular, to a limb conduction and central potential signal acquisition circuit, an ECG signal acquisition system and method.

背景技术Background technique

心电(简称ECG)信号是心脏在一段时间内电性活动的反映，通过皮肤电极采集，然后皮肤电极再与心电导联线连接，将心电信号传输到心电测量电路中。皮肤电极一般放置在四肢和胸部等各个部位。ECG (abbreviated as ECG) signal is a reflection of the electrical activity of the heart over a period of time. It is collected by skin electrodes, and then the skin electrodes are connected to the ECG lead wires to transmit the ECG signals to the ECG measurement circuit. Skin electrodes are generally placed on various parts of the extremities and chest.

现在普通12导联心电图都是采用威尔逊中心网络取中心点的方式进行胸导联心电采集，但是上述导联在使用时如果其中一个肢导受到干扰，就会导致整个胸导干扰会增大，导致采集的心电信号不准确。At present, the common 12-lead ECG is to use the Wilson Center Network to take the center point to collect the chest lead ECG. However, if one of the above-mentioned leads is interfered with, the interference of the entire chest lead will increase. , resulting in inaccurate ECG signals collected.

发明内容SUMMARY OF THE INVENTION

本发明提供一种肢导及中心电位信号采集电路、心电信号采集系统及方法，以实现提高心电信号采集的抗干扰能力和信号准确性。The invention provides a limb guide and central potential signal acquisition circuit, an electrocardiographic signal acquisition system and method, so as to improve the anti-interference ability and signal accuracy of electrocardiographic signal acquisition.

第一方面，本发明实施例提供了一种肢导信号采集电路，该肢导信号采集电路包括：至少三个肢导信号输入端、选择开关和电阻；其中，所述选择开关的第一端与所述肢导信号输入端电连接，所述选择开关的第二端与所述电阻的一端电连接，所述电阻的另一端作为肢导信号采集电路的输出端，所述选择开关的第三端与所述控制部件电连接；所述控制部件分别与各所述肢导信号输入端连接，用于根据各所述肢导信号输入端输入的肢导信号确定采集的目标肢导信号，并生成所述选择开关的控制信号，将所述控制信号发送至所述选择开关；In a first aspect, an embodiment of the present invention provides a limb conduction signal acquisition circuit, the limb conduction signal acquisition circuit includes: at least three limb conduction signal input terminals, a selection switch and a resistor; wherein the first terminal of the selection switch The second end of the selection switch is electrically connected to one end of the resistor, and the other end of the resistor is used as the output end of the limb guide signal acquisition circuit. The three terminals are electrically connected to the control component; the control component is respectively connected to each of the limb guidance signal input ends, and is used for determining the collected target limb guidance signal according to the limb guidance signal input from each of the limb guidance signal input ends, and generating a control signal of the selection switch, and sending the control signal to the selection switch;

所述选择开关根据所述控制部件的控制信号调节与各肢导信号输入端的连接状态，以输出所述目标肢导信号；The selection switch adjusts the connection state with each limb lead signal input terminal according to the control signal of the control component, so as to output the target limb lead signal;

所述电阻用于调节所述目标肢导信号的输出电流。The resistance is used to adjust the output current of the target limb conduction signal.

第二方面，本发明实施例还提供了一种中心电位信号采集电路，该中心电位信号采集电路包括：控制部件、电容和至少三个如上述任一实施例所述的肢导信号采集电路；In a second aspect, an embodiment of the present invention further provides a central potential signal acquisition circuit, the central potential signal acquisition circuit comprising: a control component, a capacitor, and at least three limb conduction signal acquisition circuits as described in any of the foregoing embodiments;

其中，各所述肢导信号采集电路的输入端作为所述中心电位信号采集电路的各输入端，并且所述肢导信号输入端的个数与所述肢导信号采集电路个数相同；Wherein, the input ends of each of the limb lead signal acquisition circuits are used as the input ends of the center potential signal acquisition circuit, and the number of the limb lead signal input ends is the same as the number of the limb lead signal acquisition circuits;

所述控制部件分别与各所述肢导信号采集电路中的肢导信号输入端和选择开关电连接，用于根据各所述肢导信号采集电路中各肢导信号输入端采集的肢导信号生成所述选择开关的控制信号，将所述控制信号发送至各所述肢导信号采集电路的选择开关；The control components are respectively electrically connected with the limb guidance signal input terminals and the selection switch in each of the limb guidance signal acquisition circuits, and are used for collecting limb guidance signals according to the limb guidance signal input terminals of the limb guidance signal acquisition circuits. generating a control signal of the selection switch, and sending the control signal to the selection switch of each of the limb guide signal acquisition circuits;

各所述肢导信号采集电路用于根据所述控制信号调节所述选择开关的接通状态，输出目标肢导信号；Each of the limb guide signal acquisition circuits is used to adjust the on state of the selection switch according to the control signal, and output the target limb guide signal;

所述电容的一端分别与各所述肢导信号采集电路的输出端电连接，对各所述肢导信号采集电路输出的目标肢导信号进行滤波处理，所述电容的另一端作为所述中心电位信号采集电路的输出端，输出中心电位信号。One end of the capacitor is electrically connected to the output end of each of the limb-guided signal acquisition circuits, and the target limb-guided signal output by each of the limb-guided signal acquisition circuits is filtered, and the other end of the capacitor is used as the center The output terminal of the potential signal acquisition circuit outputs the central potential signal.

第三方面，本发明实施例还提供了一种心电信号采集系统，所述心电信号采集系统包括：至少三个信号采集电极、胸导信号采集电路、差分电路以及上述实施例任一所述的中心电位信号采集电路；其中，所述信号采集电极与所述肢导信号输入端一一对应连接；所述差分电路的第一输入端与所述中心电位信号采集电路的输出端连接，所述差分电路的第二输入端与所述胸导信号采集电路的输出端连接，所述差分电路的输出端作为所述心电信号采集系统的输出端；In a third aspect, an embodiment of the present invention further provides an ECG signal acquisition system, where the ECG signal acquisition system includes: at least three signal acquisition electrodes, a chest conduction signal acquisition circuit, a differential circuit, and any of the above embodiments. The central potential signal acquisition circuit; wherein, the signal acquisition electrodes are connected with the limb lead signal input terminals in a one-to-one correspondence; the first input terminal of the differential circuit is connected with the output terminal of the central potential signal acquisition circuit, The second input terminal of the differential circuit is connected to the output terminal of the chest conduction signal acquisition circuit, and the output terminal of the differential circuit serves as the output terminal of the ECG signal acquisition system;

所述信号采集电极用于获取肢导信号；The signal acquisition electrode is used to acquire limb guidance signals;

所述中心电位信号采集电路根据输入的所述肢导信号确定中心电位信号；The central potential signal acquisition circuit determines the central potential signal according to the inputted limb lead signal;

所述胸导信号采集电路用于输出所述胸导信号；The chest guide signal acquisition circuit is used for outputting the chest guide signal;

所述差分电路用于根据所述中心电位信号和所述胸导信号确定心电信号。The differential circuit is used for determining an electrocardiogram signal according to the central potential signal and the chest conduction signal.

第四方面，本发明实施例还提供了一种心电信号采集方法，该方法包括：In a fourth aspect, an embodiment of the present invention further provides an ECG signal acquisition method, the method comprising:

基于控制部件接收各肢导信号输入端输入的肢导信号，对接收各所述肢导信号进行状态验证；根据各所述肢导信号的状态，确定各肢导信号采集电路进行采集的目标肢导信号，并基于所述肢导信号采集电路的目标肢导信号生成各所述肢导信号采集电路的控制信号，所述控制信号用于控制对应肢导信号采集电路中选择开关进行连接状态的切换，以输出目标肢导信号；Based on the control component receiving the limb guidance signal input from the input terminal of each limb guidance signal, the status verification of the received limb guidance signal is performed; according to the state of each limb guidance signal, the target limb collected by each limb guidance signal acquisition circuit is determined. and generate a control signal of each limb guidance signal acquisition circuit based on the target limb guidance signal of the limb guidance signal acquisition circuit, the control signal is used to control the connection state of the selection switch in the corresponding limb guidance signal acquisition circuit Switch to output target limb guidance signal;

基于所述肢导信号采集电路采集各肢导信号并输出目标肢导信号；Collect each limb guide signal based on the limb guide signal acquisition circuit and output the target limb guide signal;

基于中心电位信号采集电路根据输入的所述肢导信号确定中心电位信号；Based on the central potential signal acquisition circuit, the central potential signal is determined according to the inputted limb lead signal;

基于胸导信号采集电路输出所述胸导信号；outputting the chest guide signal based on the chest guide signal acquisition circuit;

基于差分电路根据所述中心电位信号和所述胸导信号确定心电信号。The electrocardiographic signal is determined according to the central potential signal and the chest conduction signal based on the differential circuit.

本发明实施例的技术方案通过将基于肢导信号输入端输入的各肢导信号输入至控制部件，并基于控制部件根据各所述肢导信号的状态，确定各肢导信号采集电路进行采集的目标肢导信号，生成各所述肢导信号采集电路的控制信号，所述控制信号用于控制对应肢导信号采集电路中选择开关进行连接状态的切换，以输出目标肢导信号。本发明实施例的技术方案通过输出状态稳定的目标肢导信号，以根据所述各目标肢导信号确定中心电位信号，并根据所述中心电位信号和所述胸导信号确定心电信号，实现了提高心电信号采集的抗干扰能力和信号准确性。The technical solution of the embodiment of the present invention is to input each limb guidance signal input based on the limb guidance signal input terminal to the control component, and the control component determines the status of each limb guidance signal acquisition circuit to collect the limb guidance signal according to the state of each limb guidance signal. The target limb guide signal is used to generate a control signal of each of the limb guide signal acquisition circuits, and the control signal is used to control the selection switch in the corresponding limb guide signal acquisition circuit to switch the connection state to output the target limb guide signal. The technical solution of the embodiment of the present invention is to output stable target limb lead signals, so as to determine the central potential signal according to the target limb lead signals, and to determine the ECG signal according to the central potential signal and the chest lead signal, so as to achieve In order to improve the anti-interference ability and signal accuracy of ECG signal acquisition.

附图说明Description of drawings

为了更加清楚地说明本发明示例性实施例的技术方案，下面对描述实施例中所需要用到的附图做一简单介绍。显然，所介绍的附图只是本发明所要描述的一部分实施例的附图，而不是全部的附图，对于本领域普通技术人员，在不付出创造性劳动的前提下，还可以根据这些附图得到其他的附图。In order to illustrate the technical solutions of the exemplary embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in describing the embodiments. Obviously, the introduced drawings are only a part of the drawings of the embodiments to be described in the present invention, rather than all drawings. For those of ordinary skill in the art, without creative work, they can also obtain the drawings according to these drawings. Additional drawings.

图1是本发明实施例一提供的一种肢导信号采集电路的结构图；1 is a structural diagram of a limb guide signal acquisition circuit provided in Embodiment 1 of the present invention;

图2为本发明实施例一涉及的另一种肢导信号采集电路的结构图；2 is a structural diagram of another limb guide signal acquisition circuit involved in Embodiment 1 of the present invention;

图3为本发明实施例二提供的一种中心电位信号采集电路的结构图；3 is a structural diagram of a central potential signal acquisition circuit according to Embodiment 2 of the present invention;

图4为本发明实施例三提供的一种心电信号采集系统的结构图；FIG. 4 is a structural diagram of an ECG signal acquisition system according to Embodiment 3 of the present invention;

图5为本发明实施例四提供的一种心电信号采集方法的流程图。FIG. 5 is a flowchart of a method for collecting an ECG signal according to Embodiment 4 of the present invention.

具体实施方式Detailed ways

下面结合附图和实施例对本发明作进一步的详细说明。可以理解的是，此处所描述的具体实施例仅仅用于解释本发明，而非对本发明的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本发明相关的部分而非全部结构。The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

实施例一Example 1

图1为本发明实施例一提供的一种肢导信号采集电路的结构图，本实施例可适用于对心电信号进行采集的情况。如图1所示，该电路101与控制部件102电连接，该电路101的包括以下结构：至少三个肢导信号输入端110、选择开关120和电阻130；FIG. 1 is a structural diagram of a limb guide signal acquisition circuit according to Embodiment 1 of the present invention, and this embodiment can be applied to the case of ECG signal acquisition. As shown in FIG. 1 , thecircuit 101 is electrically connected to thecontrol unit 102 , and thecircuit 101 includes the following structures: at least three limb leadsignal input terminals 110 , aselection switch 120 and aresistor 130 ;

其中，选择开关120的第一端与肢导信号输入端110电连接，选择开关120的第二端与电阻130的一端电连接，电阻130的另一端作为肢导信号采集电路101的输出端，选择开关120的第三端与控制部件102电连接；控制部件102分别与各肢导信号输入端110连接，用于根据各肢导信号输入端110输入的肢导信号确定采集的目标肢导信号，并生成选择开关120的控制信号，将控制信号发送至选择开关120；选择开关120根据控制部件102的控制信号调节与各肢导信号输入端110的连接状态，以输出目标肢导信号；电阻130用于调节目标肢导信号的输出电流。Wherein, the first end of theselection switch 120 is electrically connected to the limb conductionsignal input terminal 110, the second end of theselection switch 120 is electrically connected to one end of theresistance 130, and the other end of theresistance 130 is used as the output terminal of the limb conductionsignal acquisition circuit 101, The third end of theselection switch 120 is electrically connected to thecontrol part 102; thecontrol part 102 is respectively connected to each limb guidesignal input terminal 110 for determining the collected target limb guide signal according to the limb guide signal input by each limb guidesignal input terminal 110 , and generate the control signal of theselection switch 120, and send the control signal to theselection switch 120; theselection switch 120 adjusts the connection state with each limb guidesignal input terminal 110 according to the control signal of thecontrol part 102, so as to output the target limb guide signal; 130 is used to adjust the output current of the target limb conduction signal.

可选的，肢导信号采集电路101的肢导信号输入端110包括至少三个输入端，例如左上肢导联信号(Left arm，LA)输入端、右上肢导联信号(Right arm，RA)输入端和左下肢导联信号(Left leg，LL)输入端等肢体导联信号输入端。各肢导信号输入端110用于采集各肢体导联输入的各肢导信号，并将各肢导信号输入至控制部件102。控制部件102在接收到各肢导信号时对各肢导信号进行检测，确定各肢导信号是否发生异常，若任意肢导信号采集电路采集的任一肢导信号处于异常状态时，则根据处于正常状态的肢导信号生成控制信号，其中，控制信号基于处于正常状态的肢导信号中的任一项随机生成。若所有肢导信号均处于正常状态，则确定肢导信号采集电路当前所属肢导的目标肢导信号，基于当前所属肢导的目标肢导信号生成各肢导信号采集电路对应的控制信号。将控制部件102生成的控制信号传输至肢导信号采集电路101中的选择开关120。选择开关120根据控制部件102传输的控制信号调节各肢导信号输入端的开关状态，以输出肢导信号采集电路的目标肢导信号。Optionally, the limb leadsignal input end 110 of the limb leadsignal acquisition circuit 101 includes at least three input ends, for example, the left arm lead signal (Left arm, LA) input end, the right arm lead signal (Right arm, RA) input end. The input terminal and the left lower limb lead signal (Left leg, LL) input terminal and other limb lead signal input terminals. Each limb leadsignal input terminal 110 is used to collect each limb lead signal input by each limb lead, and input each limb lead signal to thecontrol component 102 . Thecontrol component 102 detects each limb lead signal when receiving each limb lead signal, and determines whether each limb lead signal is abnormal. The limb-guided signal in the normal state generates a control signal, wherein the control signal is randomly generated based on any one of the limb-guided signals in the normal state. If all the limb guide signals are in normal state, determine the target limb guide signal of the limb guide signal currently belonging to the limb guide signal acquisition circuit, and generate the control signal corresponding to each limb guide signal acquisition circuit based on the target limb guide signal of the current limb guide. The control signal generated by thecontrol unit 102 is transmitted to theselection switch 120 in the limb conductionsignal acquisition circuit 101 . Theselection switch 120 adjusts the switch state of each limb lead signal input terminal according to the control signal transmitted by thecontrol unit 102 to output the target limb lead signal of the limb lead signal acquisition circuit.

本发明实施例提供的肢导信号采集电路，通过将基于肢导信号输入端110输入的各肢导信号输入至控制部件102，并基于控制部件102根据各肢导信号的状态，确定各肢导信号采集电路101进行采集的目标肢导信号，生成各肢导信号采集电路的控制信号，控制信号用于控制对应肢导信号采集电路101中选择开关120进行连接状态的切换，以输出目标肢导信号。本发明实施例的技术方案通过肢导信号采集电路输出状态稳定的目标肢导信号，以使在采集心电信号的过程中根据各目标肢导信号确定中心电位信号采集电路输出的状态稳定的中心电位信号，并根据中心电位信号采集电路的中心电位信号和胸导信号采集电路的胸导信号确定更加准确的心电信号，实现了提高心电信号采集的抗干扰能力和信号准确性。In the limb guidance signal acquisition circuit provided by the embodiment of the present invention, each limb guidance signal input based on the limb guidancesignal input terminal 110 is input to thecontrol component 102, and thecontrol component 102 determines each limb guidance signal according to the state of each limb guidance signal. The target limb guidance signal collected by thesignal acquisition circuit 101 generates the control signal of each limb guidance signal acquisition circuit, and the control signal is used to control theselection switch 120 in the corresponding limb guidancesignal acquisition circuit 101 to switch the connection state to output the target limb guidance signal. Signal. The technical scheme of the embodiment of the present invention outputs a target limb guide signal with a stable state through the limb guide signal acquisition circuit, so that the center of the stable state output by the center potential signal acquisition circuit can be determined according to each target limb guide signal during the process of collecting the ECG signal. The potential signal is obtained, and a more accurate ECG signal is determined according to the central potential signal of the central potential signal acquisition circuit and the chest conduction signal of the chest conduction signal acquisition circuit, thereby improving the anti-interference ability and signal accuracy of the ECG signal acquisition.

在上述实施例的基础上，本发明实施例还提供了另一种肢导信号采集电路，该肢导信号采集电路还包括运算放大子电路140，具体的如图2所示，运算放大子电路140的第一输入端与选择开关420的第二端连接，运算放大子电路140的第二输入端与运算放大子电路140的输出端连接，运算放大子电路140的输出端与电阻130的第一端连接；运算放大子电路140用于对选择开关120输出的目标肢导信号进行放大处理，以控制目标肢导信号的电压。On the basis of the above embodiment, the embodiment of the present invention further provides another limb conduction signal acquisition circuit, the limb conduction signal acquisition circuit further includes anoperational amplifier sub-circuit 140, specifically as shown in FIG. 2, the operational amplifier sub-circuit The first input terminal of 140 is connected to the second terminal of the selection switch 420, the second input terminal of theoperational amplifier sub-circuit 140 is connected to the output terminal of theoperational amplifier sub-circuit 140, and the output terminal of theoperational amplifier sub-circuit 140 is connected to the first terminal of theresistor 130. One end is connected; theoperational amplifier sub-circuit 140 is used for amplifying the target limb lead signal output by theselection switch 120 to control the voltage of the target limb lead signal.

实施例二Embodiment 2

图3为本发明实施例二提供的一种中心电位信号采集电路的结构图，本实施例可适用于对心电信号进行采集的情况。其中与上述各实施例相同或相应的术语的解释在此不再赘述。参见图3，本实施例提供的中心电位信号采集电路200包括：控制部件202电容203和至少三个如上述任一实施例所述的肢导信号采集电路201；FIG. 3 is a structural diagram of a central potential signal acquisition circuit according to Embodiment 2 of the present invention, and this embodiment is applicable to the case of collecting ECG signals. The explanations of terms that are the same as or corresponding to the above embodiments are not repeated here. Referring to FIG. 3 , the central potentialsignal acquisition circuit 200 provided in this embodiment includes: acontrol component 202 , acapacitor 203 and at least three limb conductionsignal acquisition circuits 201 as described in any of the above embodiments;

其中，各所述肢导信号采集电路201的输入端作为所述中心电位信号采集电路200的各输入端，并且所述肢导信号输入端210的个数与所述肢导信号采集电路201个数相同；所述控制部件202分别与各所述肢导信号采集电路201中的肢导信号输入端210和选择开关220电连接，用于根据各所述肢导信号采集电路201中各肢导信号输入端210采集的肢导信号生成所述选择开关220的控制信号，将所述控制信号发送至各所述肢导信号采集电路201的选择开关220；各所述肢导信号采集电路201用于根据所述控制信号调节所述选择开关220的接通状态，输出目标肢导信号；所述电容203的一端分别与各所述肢导信号采集电路201的输出端电连接，对各所述肢导信号采集电路201输出的目标肢导信号进行滤波处理，所述电容的另一端作为所述中心电位信号采集电路200的输出端，输出中心电位信号。Wherein, the input terminals of each of the limb conductionsignal acquisition circuits 201 are used as input terminals of the central potentialsignal acquisition circuit 200, and the number of the limb conductionsignal input terminals 210 is the same as the number of the limb conductionsignal acquisition circuits 201. The numbers are the same; thecontrol part 202 is respectively electrically connected to the limb conductionsignal input terminal 210 and theselection switch 220 in each of the limb conductionsignal acquisition circuits 201 , and is used for collecting the limb conduction signals according to each limb conduction signal in each limb conductionsignal acquisition circuit 201. The limb guidance signal collected by thesignal input terminal 210 generates a control signal of theselection switch 220, and sends the control signal to theselection switch 220 of each limb guidancesignal acquisition circuit 201; each limb guidancesignal acquisition circuit 201 uses According to the control signal, the on state of theselection switch 220 is adjusted, and the target limb conduction signal is output; The target limb lead signal output by the limb leadsignal acquisition circuit 201 is filtered, and the other end of the capacitor is used as the output end of the center potentialsignal acquisition circuit 200 to output the center potential signal.

具体的，中心电位信号采集电路200中包括至少三个肢导信号采集电路201，用于获取各肢导信号采集电路201基于控制部件202生成的控制信号所输出的各目标肢导信号。其中，肢导信号输入端的个数与所述肢导信号采集电路个数相同的有益效果在于：可以保证在所有肢导信号输入端均处于正常状态时，每一个肢导信号采集电路都可以输出稳定的目标肢导信号。Specifically, the center potentialsignal acquisition circuit 200 includes at least three limb leadsignal acquisition circuits 201 for acquiring each target limb lead signal output by each limb leadsignal acquisition circuit 201 based on the control signal generated by thecontrol unit 202 . The beneficial effect of having the same number of limb guidance signal input terminals as the number of the limb guidance signal acquisition circuits is that it can ensure that when all limb guidance signal input terminals are in a normal state, each limb guidance signal acquisition circuit can output Stable target limb-guided signal.

中心电位信号采集电路200用于将各肢导信号采集电路201输出的各目标肢导信号进行计算得到中心电位信号。The central potentialsignal acquisition circuit 200 is configured to calculate the target limb lead signals output by the limb leadsignal acquisition circuits 201 to obtain the central potential signal.

示例性的，控制部件202对接收到各肢导信号采集电路的采集的各肢导信号输入端210输入的各肢导信号进行检测，确定各肢导信号采集电路的采集的各肢导信号的信号状态，若任一肢导信号采集电路的采集的任一肢导信号处于异常状态时，则根据处于正常状态的肢导信号生成控制信号，其中，控制信号基于处于正常状态的肢导信号中的任一项随机生成。将控制信号发送至所述各个肢导信号采集电路201的选择开关220，选择开关220基于控制部件202传输的控制信号生成各肢导信号采集电路201的目标肢导信号。即当控制部件检测到肢导信号采集电路采集的RA信号处于异常状态，则生成所有的肢导信号采集电路的控制信号为LA信号，或者LL信号，并将该控制信号传输至肢导信号采集电路201的选择开关220，选择开关220基于控制部件202传输的控制信号生成各肢导信号采集电路201的LA信号，或者LL信号作为目标肢导信号。Exemplarily, thecontrol component 202 detects each limb lead signal input by each limb leadsignal input terminal 210 collected by each limb lead signal acquisition circuit, and determines the value of each limb lead signal collected by each limb lead signal acquisition circuit. Signal state, if any limb lead signal collected by any limb lead signal acquisition circuit is in an abnormal state, a control signal is generated according to the limb lead signal in the normal state, wherein the control signal is based on the limb lead signal in the normal state. Any of the items are randomly generated. The control signal is sent to theselection switch 220 of each limb guidancesignal acquisition circuit 201 , and theselection switch 220 generates the target limb guidance signal of each limb guidancesignal acquisition circuit 201 based on the control signal transmitted by thecontrol unit 202 . That is, when the control component detects that the RA signal collected by the limb-guided signal acquisition circuit is in an abnormal state, it generates all the control signals of the limb-guided signal acquisition circuit as LA signals or LL signals, and transmits the control signals to the limb-guided signal acquisition circuit. Theselection switch 220 of thecircuit 201 generates the LA signal or the LL signal of each limb leadsignal acquisition circuit 201 based on the control signal transmitted by thecontrol unit 202 as the target limb lead signal.

本发明实施例提供的中心电位信号采集电路，通过所述控制部件202分别与各所述肢导信号采集电路201中的肢导信号输入端210和选择开关220电连接，用于根据各所述肢导信号采集电路201中各肢导信号输入端210采集的肢导信号生成所述选择开关220的控制信号，将所述控制信号发送至各所述肢导信号采集电路201的选择开关220；各所述肢导信号采集电路201用于根据所述控制信号调节所述选择开关220的接通状态，输出目标肢导信号；并根据至少三个肢导信号采集电路201的各目标肢导信号确定中心电位信号采集电路200的中心电位信号。本发明实施例的技术方案通过输出状态稳定的目标肢导信号，并根据所述各目标肢导信号确定状态稳定的中心电位信号，以根据所述中心电位信号和所述胸导信号确定更加准确的心电信号，实现了提高心电信号采集的抗干扰能力和信号准确性。The central potential signal acquisition circuit provided by the embodiment of the present invention is electrically connected to the limb conductionsignal input terminal 210 and theselection switch 220 in each limb conductionsignal acquisition circuit 201 through thecontrol component 202, respectively, and is used for according to each limb conductionsignal acquisition circuit 201. The limb guidance signal collected by each limb guidancesignal input terminal 210 in the limb guidancesignal acquisition circuit 201 generates a control signal of theselection switch 220, and the control signal is sent to theselection switch 220 of each limb guidancesignal acquisition circuit 201; Each of the limb guidesignal acquisition circuits 201 is configured to adjust the on state of theselection switch 220 according to the control signal, and output a target limb guide signal; and collect each target limb guide signal of thecircuits 201 according to at least three limb guide signals. Determine the center potential signal of the center potentialsignal acquisition circuit 200 . The technical solution of the embodiment of the present invention is to output a target limb lead signal in a stable state, and determine a stable central potential signal according to the target limb lead signals, so as to determine more accurately according to the central potential signal and the chest lead signal The ECG signal can improve the anti-interference ability and signal accuracy of ECG signal acquisition.

实施例三Embodiment 3

图4为本发明实施例三提供的一种心电信号采集系统的结构图，本实施例可适用于对心电信号进行采集的情况。其中与上述各实施例相同或相应的术语的解释在此不再赘述。参见图4，本实施例提供的心电信号采集系统300包括：至少三个信号采集电极303、胸导信号采集电路304、差分电路305以及上述实施例任一所述的中心电位信号采集电路306；其中，FIG. 4 is a structural diagram of an ECG signal acquisition system according to Embodiment 3 of the present invention, and this embodiment is applicable to the case of ECG signal acquisition. The explanations of terms that are the same as or corresponding to the above embodiments are not repeated here. Referring to FIG. 4 , the ECG signal acquisition system 300 provided in this embodiment includes: at least threesignal acquisition electrodes 303 , a chest conductionsignal acquisition circuit 304 , adifferential circuit 305 , and the central potentialsignal acquisition circuit 306 described in any of the above embodiments ;in,

所述信号采集电极303与所述肢导信号输入端310一一对应连接；所述差分电路305的第一输入端与所述中心电位信号采集电路306的输出端连接，所述差分电路305的第二输入端与所述胸导信号采集电路304的输出端连接，所述差分电路305的输出端作为所述心电信号采集系统300的输出端；所述信号采集电极303用于获取肢导信号；所述中心电位信号采集电路306根据输入的所述肢导信号确定中心电位信号；所述胸导信号采集电路304用于输出所述胸导信号；所述差分电路305用于根据所述中心电位信号和所述胸导信号确定心电信号。Thesignal acquisition electrode 303 is connected to the limb conductionsignal input terminal 310 in a one-to-one correspondence; the first input terminal of thedifferential circuit 305 is connected to the output terminal of the center potentialsignal acquisition circuit 306 , and thedifferential circuit 305 The second input terminal is connected to the output terminal of the chest conductionsignal acquisition circuit 304, and the output terminal of thedifferential circuit 305 is used as the output terminal of the ECG signal acquisition system 300; thesignal acquisition electrode 303 is used to acquire the limb conduction The central potentialsignal acquisition circuit 306 determines the central potential signal according to the input limb lead signal; the chest leadsignal acquisition circuit 304 is used for outputting the chest lead signal; thedifferential circuit 305 is used for The central potential signal and the chest lead signal determine the electrocardiographic signal.

本发明实施例提供的心电信号采集系统，通过中心电位信号采集电路306中的控制部件302分别与各所述肢导信号采集电路301中的肢导信号输入端310和选择开关320电连接，用于根据各所述肢导信号采集电路306中各肢导信号输入端310采集的肢导信号生成所述选择开关320的控制信号，将所述控制信号发送至各所述肢导信号采集电路301的选择开关320；各所述肢导信号采集电路301用于根据所述控制信号调节所述选择开关320的接通状态，输出目标肢导信号；并根据至少三个肢导信号采集电路301的各目标肢导信号确定中心电位信号采集电路306的中心电位信号；基于胸导信号采集电路304输出所述胸导信号；基于差分电路305根据所述中心电位信号和所述胸导信号确定心电信号。本发明实施例的技术方案通过输出状态稳定的目标肢导信号，并根据所述各目标肢导信号确定中心电位信号，根据所述中心电位信号和所述胸导信号确定心电信号，实现了提高心电信号采集的抗干扰能力和信号准确性性。The ECG signal acquisition system provided by the embodiment of the present invention is electrically connected to the limb conductionsignal input terminal 310 and theselection switch 320 in each of the limb conductionsignal acquisition circuits 301 through thecontrol component 302 in the central potentialsignal acquisition circuit 306, respectively, For generating the control signal of theselection switch 320 according to the limb guidance signal collected by the limb guidancesignal input terminal 310 in each limb guidancesignal acquisition circuit 306, and sending the control signal to each limb guidance signal acquisition circuit Theselection switch 320 of 301; each of the limb guidesignal acquisition circuits 301 is used to adjust the ON state of theselection switch 320 according to the control signal, and output the target limb guide signal; and according to at least three limb guidesignal acquisition circuits 301 The central potential signal of the central potentialsignal acquisition circuit 306 is determined based on the lead signals of each target limb; the chest lead signal is output based on the chest leadsignal acquisition circuit 304; electric signal. The technical solution of the embodiment of the present invention is to output a target limb lead signal in a stable state, determine the central potential signal according to the target limb lead signals, and determine the ECG signal according to the central potential signal and the chest lead signal, so as to realize the Improve the anti-interference ability and signal accuracy of ECG signal acquisition.

以下是本发明实施例提供的心电信号采集方法的实施例，该方法与上述各实施例属于同一个发明构思，在心电信号采集方法的实施例中未详尽描述的细节内容，可以参考上述各实施例。The following is an embodiment of the ECG signal acquisition method provided by the embodiments of the present invention, which belongs to the same inventive concept as the above-mentioned embodiments. Example.

实施例四Embodiment 4

图5为本发明实施例四提供的心电信号采集方法的流程示意图，本实施例可适用于在进行心电信号采集的情况。该方法可以由上述实施例提供的心电信号采集系统来执行，该系统可以由软件和/或硬件的方式来实现。参见图5，该信号采集方法具体步骤如下所示：FIG. 5 is a schematic flowchart of a method for collecting an ECG signal according to Embodiment 4 of the present invention. This embodiment can be applied to a situation in which ECG signal collection is being performed. The method may be performed by the ECG signal acquisition system provided in the above embodiments, and the system may be implemented by software and/or hardware. Referring to Figure 5, the specific steps of the signal acquisition method are as follows:

S410、基于控制部件接收各肢导信号输入端输入的肢导信号，对接收各所述肢导信号进行状态验证；根据各所述肢导信号的状态，确定各肢导信号采集电路进行采集的目标肢导信号，并基于所述肢导信号采集电路的目标肢导信号生成各所述肢导信号采集电路的控制信号，所述控制信号用于控制对应肢导信号采集电路中选择开关进行连接状态的切换，以输出目标肢导信号。S410. Based on the control component receiving the limb guidance signals input from the input terminals of the limb guidance signals, verify the status of the received limb guidance signals; and determine the status of the limb guidance signals collected by the limb guidance signal acquisition circuits according to the status of the limb guidance signals. A target limb guide signal, and based on the target limb guide signal of the limb guide signal acquisition circuit, a control signal of each of the limb guide signal acquisition circuits is generated, and the control signal is used to control the selection switch in the corresponding limb guide signal acquisition circuit to connect State switching to output target limb guide signal.

S420、基于所述肢导信号采集电路采集各肢导信号并输出目标肢导信号。S420. Collect each limb guide signal based on the limb guide signal acquisition circuit and output the target limb guide signal.

S430、基于中心电位信号采集电路根据输入的所述肢导信号确定中心电位信号。S430 , the central potential signal acquisition circuit determines the central potential signal according to the input limb lead signal.

S440、基于胸导信号采集电路输出所述胸导信号。S440 , output the chest guide signal based on the chest guide signal acquisition circuit.

S450、基于差分电路根据所述中心电位信号和所述胸导信号确定心电信号。S450. Determine the ECG signal according to the central potential signal and the chest conduction signal based on the differential circuit.

本发明实施例提供的心电信号采集方法，基于控制部件接收各肢导信号输入端输入的肢导信号，对接收各所述肢导信号进行状态验证；根据各所述肢导信号的状态，确定各肢导信号采集电路进行采集的目标肢导信号，并基于所述肢导信号采集电路的目标肢导信号生成各所述肢导信号采集电路的控制信号，所述控制信号用于控制对应肢导信号采集电路中选择开关进行连接状态的切换，以输出目标肢导信号；实现了输出状态稳定的目标肢导信号，继而根据所述各目标肢导信号确定中心电位信号，根据所述中心电位信号和所述胸导信号确定心电信号，实现了提高心电信号采集的抗干扰能力和信号准确性提高心电信号采集的抗干扰能力和信号准确性性。The ECG signal acquisition method provided by the embodiment of the present invention is based on the control component receiving the limb guidance signals input by the limb guidance signal input terminals, and performing status verification on the received limb guidance signals; according to the status of the limb guidance signals, Determine the target limb guide signal collected by each limb guide signal acquisition circuit, and generate a control signal of each of the limb guide signal acquisition circuits based on the target limb guide signal of the limb guide signal acquisition circuit, and the control signal is used to control the corresponding The selection switch in the limb lead signal acquisition circuit switches the connection state to output the target limb lead signal; the target limb lead signal with stable output state is realized, and then the central potential signal is determined according to the target limb lead signals. The electrocardiographic signal is determined by the potential signal and the chest conduction signal, so as to improve the anti-interference ability and signal accuracy of electrocardiographic signal acquisition and improve the anti-interference ability and signal accuracy of electrocardiographic signal acquisition.

在上述实施例的基础上，本发明实施例中的所述根据各所述肢导信号的状态，确定各肢导信号采集电路进行采集的目标肢导信号，并基于所述肢导信号采集电路的目标肢导信号生成各所述肢导信号采集电路的控制信号，包括：若任意所述肢导信号采集电路采集的任一肢导信号处于异常状态时，则根据处于正常状态的肢导信号生成控制信号，并将所述控制信号发送至所述各个肢导信号采集电路，其中，所述控制信号基于处于正常状态的肢导信号中的任一项随机生成。On the basis of the above-mentioned embodiment, in the embodiment of the present invention, according to the state of each limb guide signal, the target limb guide signal collected by each limb guide signal acquisition circuit is determined, and based on the limb guide signal acquisition circuit The target limb guidance signal generated by the control signal of each of the limb guidance signal acquisition circuits includes: if any limb guidance signal collected by any of the limb guidance signal acquisition circuits is in an abnormal state, then according to the limb guidance signal in a normal state A control signal is generated, and the control signal is sent to the respective limb conduction signal acquisition circuits, wherein the control signal is randomly generated based on any one of the limb conduction signals in a normal state.

在上述实施例的基础上，本发明实施例中的所述根据各所述肢导信号的状态，确定各肢导信号采集电路进行采集的目标肢导信号，并基于所述肢导信号采集电路的目标肢导信号生成各所述肢导信号采集电路的控制信号，包括：若各个所述肢导信号采集电路采集的各个肢导信号均处于正常状态，则确定各所述肢导信号采集电路的不同的目标肢导信号，基于所述不同的目标肢导信号生成各所述肢导信号采集电路对应的控制信号。On the basis of the above-mentioned embodiment, in the embodiment of the present invention, according to the state of each limb guide signal, the target limb guide signal collected by each limb guide signal acquisition circuit is determined, and based on the limb guide signal acquisition circuit The target limb guide signal is generated to generate the control signal of each of the limb guide signal acquisition circuits, including: if each limb guide signal collected by each of the limb guide signal acquisition circuits is in a normal state, determining that each of the limb guide signal acquisition circuits is in a normal state. The different target limb guidance signals are generated based on the different target limb guidance signals, and control signals corresponding to each of the limb guidance signal acquisition circuits are generated.

注意，上述仅为本发明的较佳实施例及所运用技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。因此，虽然通过以上实施例对本发明进行了较为详细的说明，但是本发明不仅仅限于以上实施例，在不脱离本发明构思的情况下，还可以包括更多其他等效实施例，而本发明的范围由所附的权利要求范围决定。Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (10)

Translated fromChinese

1.一种肢导信号采集电路，其特征在于，与控制部件电连接，所述肢导信号采集电路包括：至少三个肢导信号输入端、选择开关和电阻；其中，所述选择开关的第一端与所述肢导信号输入端电连接，所述选择开关的第二端与所述电阻的一端电连接，所述电阻的另一端作为肢导信号采集电路的输出端，所述选择开关的第三端与所述控制部件电连接；所述控制部件分别与各所述肢导信号输入端连接，用于根据各所述肢导信号输入端输入的肢导信号确定采集的目标肢导信号，并生成所述选择开关的控制信号，将所述控制信号发送至所述选择开关；1. A limb lead signal acquisition circuit, characterized in that, electrically connected to a control component, the limb lead signal acquisition circuit comprising: at least three limb lead signal input ends, a selection switch and a resistor; The first end is electrically connected to the input end of the limb conduction signal, the second end of the selection switch is electrically connected to one end of the resistance, and the other end of the resistance is used as the output end of the limb conduction signal acquisition circuit. The third end of the switch is electrically connected to the control part; the control part is respectively connected to each of the limb guide signal input terminals, and is used for determining the target limb to be collected according to the limb guide signal input from each of the limb guide signal input terminals generate a control signal for the selection switch, and send the control signal to the selection switch;所述选择开关根据所述控制部件的控制信号调节与各肢导信号输入端的连接状态，以输出所述目标肢导信号；The selection switch adjusts the connection state with each limb lead signal input terminal according to the control signal of the control component, so as to output the target limb lead signal;所述电阻用于调节所述目标肢导信号的输出电流。The resistance is used to adjust the output current of the target limb conduction signal.2.根据权利要求1所述的肢导信号采集电路，其特征在于，所述肢导信号采集电路还包括运算放大子电路；其中，2 . The limb-guided signal acquisition circuit according to claim 1 , wherein the limb-guided signal acquisition circuit further comprises an operational amplifier sub-circuit; wherein,所述运算放大子电路的第一输入端与所述选择开关的第二端连接，所述运算放大子电路的第二输入端与所述运算放大子电路的输出端连接，所述运算放大子电路的输出端与所述电阻的第一端连接；The first input terminal of the operational amplifier sub-circuit is connected to the second terminal of the selection switch, the second input terminal of the operational amplifier sub-circuit is connected to the output terminal of the operational amplifier sub-circuit, and the operational amplifier sub-circuit is connected to the output terminal of the operational amplifier sub-circuit. the output end of the circuit is connected to the first end of the resistor;所述运算放大子电路用于对所述选择开关输出的目标肢导信号进行放大处理，以控制所述目标肢导信号的电压。The operational amplifier sub-circuit is used for amplifying the target limb conduction signal output by the selection switch, so as to control the voltage of the target limb conduction signal.3.根据权利要求1所述的肢导信号采集电路，其特征在于，所述控制部件具体用于检测各肢导信号采集电路采集的各肢导信号的异常状态；3. The limb lead signal acquisition circuit according to claim 1, wherein the control component is specifically used to detect the abnormal state of each limb lead signal collected by each limb lead signal acquisition circuit;若任意所述肢导信号采集电路采集的任一肢导信号处于异常状态时，则根据处于正常状态的肢导信号生成控制信号，并将所述控制信号发送至所述各个肢导信号采集电路。If any limb guidance signal collected by any of the limb guidance signal acquisition circuits is in an abnormal state, a control signal is generated according to the limb guidance signal in a normal state, and the control signal is sent to the respective limb guidance signal acquisition circuits .4.根据权利要求1所述的肢导信号采集电路，其特征在于，所述控制信号基于处于正常状态的肢导信号中的任一项随机生成。4 . The limb guidance signal acquisition circuit according to claim 1 , wherein the control signal is randomly generated based on any one of the limb guidance signals in a normal state. 5 .5.根据权利要求1所述的肢导信号采集电路，其特征在于，所述控制部件具体还用于：5. limb guide signal acquisition circuit according to claim 1, is characterized in that, described control part is also specifically used for:若各个所述肢导信号采集电路采集的各个肢导信号均处于正常状态，则确定各所述肢导信号采集电路的不同的目标肢导信号，基于所述不同的目标肢导信号生成各所述肢导信号采集电路对应的控制信号。If each limb guidance signal collected by each of the limb guidance signal acquisition circuits is in a normal state, different target limb guidance signals of each of the limb guidance signal acquisition circuits are determined, and each limb guidance signal is generated based on the different target limb guidance signals. The control signal corresponding to the limb guide signal acquisition circuit is described.6.一种中心电位信号采集电路，其特征在于，所述中心电位信号采集电路包括：控制部件、电容和至少三个如权利要求1-5任一所述的肢导信号采集电路；6. A central potential signal acquisition circuit, characterized in that the central potential signal acquisition circuit comprises: a control component, a capacitor and at least three limb conduction signal acquisition circuits as described in any one of claims 1-5;其中，各所述肢导信号采集电路的输入端作为所述中心电位信号采集电路的各输入端，并且所述肢导信号输入端的个数与所述肢导信号采集电路个数相同；Wherein, the input ends of each of the limb lead signal acquisition circuits are used as the input ends of the center potential signal acquisition circuit, and the number of the limb lead signal input ends is the same as the number of the limb lead signal acquisition circuits;所述控制部件分别与各所述肢导信号采集电路中的肢导信号输入端和选择开关电连接，用于根据各所述肢导信号采集电路中各肢导信号输入端采集的肢导信号生成所述选择开关的控制信号，将所述控制信号发送至各所述肢导信号采集电路的选择开关；The control components are respectively electrically connected with the limb guidance signal input terminals and the selection switch in each of the limb guidance signal acquisition circuits, and are used for collecting limb guidance signals according to the limb guidance signal input terminals of the limb guidance signal acquisition circuits. generating a control signal of the selection switch, and sending the control signal to the selection switch of each of the limb guide signal acquisition circuits;各所述肢导信号采集电路用于根据所述控制信号调节所述选择开关的接通状态，输出目标肢导信号；Each of the limb guide signal acquisition circuits is used to adjust the on state of the selection switch according to the control signal, and output the target limb guide signal;所述电容的一端分别与各所述肢导信号采集电路的输出端电连接，对各所述肢导信号采集电路输出的目标肢导信号进行滤波处理，所述电容的另一端作为所述中心电位信号采集电路的输出端，输出中心电位信号。One end of the capacitor is electrically connected to the output end of each of the limb-guided signal acquisition circuits, and the target limb-guided signal output by each of the limb-guided signal acquisition circuits is filtered, and the other end of the capacitor is used as the center The output terminal of the potential signal acquisition circuit outputs the central potential signal.7.一种心电信号采集系统，其特征在于，包括：至少三个信号采集电极、胸导信号采集电路、差分电路以及权利要求6中所述的中心电位信号采集电路；其中，所述信号采集电极与所述肢导信号输入端一一对应连接；所述差分电路的第一输入端与所述中心电位信号采集电路的输出端连接，所述差分电路的第二输入端与所述胸导信号采集电路的输出端连接，所述差分电路的输出端作为所述心电信号采集系统的输出端；7. An electrocardiographic signal acquisition system, comprising: at least three signal acquisition electrodes, a chest conduction signal acquisition circuit, a differential circuit and the central potential signal acquisition circuit described in claim 6; wherein, the signal The acquisition electrodes are connected with the limb lead signal input terminals in one-to-one correspondence; the first input terminal of the differential circuit is connected to the output terminal of the central potential signal acquisition circuit, and the second input terminal of the differential circuit is connected to the chest the output terminal of the signal acquisition circuit is connected, and the output terminal of the differential circuit is used as the output terminal of the ECG signal acquisition system;所述信号采集电极用于获取肢导信号；The signal acquisition electrode is used to acquire limb guidance signals;所述中心电位信号采集电路根据输入的所述肢导信号确定中心电位信号；The central potential signal acquisition circuit determines the central potential signal according to the inputted limb lead signal;所述胸导信号采集电路用于输出所述胸导信号；The chest guide signal acquisition circuit is used for outputting the chest guide signal;所述差分电路用于根据所述中心电位信号和所述胸导信号确定心电信号。The differential circuit is used for determining an electrocardiogram signal according to the central potential signal and the chest conduction signal.8.一种心电信号采集方法，其特征在于，应用于权利要求7所述的心电信号采集系统，包括：8. an electrocardiographic signal acquisition method, is characterized in that, is applied to the electrocardiographic signal acquisition system described in claim 7, comprises:基于控制部件接收各肢导信号输入端输入的肢导信号，对接收各所述肢导信号进行状态验证；根据各所述肢导信号的状态，确定各肢导信号采集电路进行采集的目标肢导信号，并基于所述肢导信号采集电路的目标肢导信号生成各所述肢导信号采集电路的控制信号，所述控制信号用于控制对应肢导信号采集电路中选择开关进行连接状态的切换，以输出目标肢导信号；Based on the control component receiving the limb guidance signal input from the input terminal of each limb guidance signal, the status verification of the received limb guidance signal is performed; according to the state of each limb guidance signal, the target limb collected by each limb guidance signal acquisition circuit is determined. and generate a control signal of each limb guidance signal acquisition circuit based on the target limb guidance signal of the limb guidance signal acquisition circuit, the control signal is used to control the connection state of the selection switch in the corresponding limb guidance signal acquisition circuit Switch to output target limb guidance signal;基于所述肢导信号采集电路采集各肢导信号并输出目标肢导信号；Collect each limb guide signal based on the limb guide signal acquisition circuit and output the target limb guide signal;基于中心电位信号采集电路根据输入的所述肢导信号确定中心电位信号；Based on the central potential signal acquisition circuit, the central potential signal is determined according to the inputted limb lead signal;基于胸导信号采集电路输出所述胸导信号；outputting the chest guide signal based on the chest guide signal acquisition circuit;基于差分电路根据所述中心电位信号和所述胸导信号确定心电信号。The electrocardiographic signal is determined according to the central potential signal and the chest conduction signal based on the differential circuit.9.根据权利要求8所述的方法，其特征在于，所述根据各所述肢导信号的状态，确定各肢导信号采集电路进行采集的目标肢导信号，并基于所述肢导信号采集电路的目标肢导信号生成各所述肢导信号采集电路的控制信号，包括：9 . The method according to claim 8 , wherein the target limb guide signal collected by each limb guide signal acquisition circuit is determined according to the state of each limb guide signal, and the collection is based on the limb guide signal. 10 . The target limb guide signal of the circuit generates the control signal of each of the limb guide signal acquisition circuits, including:若任意所述肢导信号采集电路采集的任一肢导信号处于异常状态时，则根据处于正常状态的肢导信号生成控制信号，并将所述控制信号发送至所述各个肢导信号采集电路，其中，所述控制信号基于处于正常状态的肢导信号中的任一项随机生成。If any limb guidance signal collected by any of the limb guidance signal acquisition circuits is in an abnormal state, a control signal is generated according to the limb guidance signal in a normal state, and the control signal is sent to the respective limb guidance signal acquisition circuits , wherein the control signal is randomly generated based on any one of the limb conduction signals in a normal state.10.根据权利要求8所述的方法，其特征在于，所述根据各所述肢导信号的状态，确定各肢导信号采集电路进行采集的目标肢导信号，并基于所述肢导信号采集电路的目标肢导信号生成各所述肢导信号采集电路的控制信号，包括：10 . The method according to claim 8 , wherein, according to the state of each of the limb guidance signals, the target limb guidance signal collected by each limb guidance signal acquisition circuit is determined, and the collection is based on the limb guidance signal. 11 . The target limb guide signal of the circuit generates the control signal of each of the limb guide signal acquisition circuits, including:若各个所述肢导信号采集电路采集的各个肢导信号均处于正常状态，则确定各所述肢导信号采集电路的不同的目标肢导信号，基于所述不同的目标肢导信号生成各所述肢导信号采集电路对应的控制信号。If each limb guidance signal collected by each of the limb guidance signal acquisition circuits is in a normal state, different target limb guidance signals of each of the limb guidance signal acquisition circuits are determined, and each limb guidance signal is generated based on the different target limb guidance signals. The control signal corresponding to the limb guide signal acquisition circuit is described.

Images