WO2018006259A1 - Method and device for detecting physiological tissue, and detector - Google Patents

Abstract

A method and device for detecting physiological tissue, and a detector. The method comprises: measuring a modulated field containing a physiological tissue motion signal (S102), wherein an electric field between a first electrode (22) and a second electrode (24) of the detector forms the modulated field after being disturbed by the motion of physiological tissue; determining whether a first parameter of the modulated field is within a first preset range (S104); if it is determined that the first parameter of the modulated field is not within the first preset range, adjusting the frequency of an electric signal emitted by a transmitting/receiving circuit (26) to obtain a first frequency (S106); and when the frequency of the electric signal emitted by the transmitting/receiving circuit (26) is the first frequency, outputting a motion situation of the physiological tissue according to a waveform parameter of the modulated field (S108). The method solves the technical problem in the art of low detection precision caused by poor disturbance-resisting capability of a detector when detecting physiological tissue.

Description

Physiological tissue detection method and device and detector Technical field

The present application relates to the field of detection, and in particular to a method and apparatus for detecting physiological tissue and a detector.

Background technique

Intravascular blood flow velocity and blood flow have certain value for the diagnosis of cardiovascular diseases, especially for oxygen supply during the circulation, atresia, turbulence, vascular atherosclerosis, etc. can provide valuable diagnosis.

In order to check the movement state of the heart and blood vessels, and to understand the blood flow velocity, it can be achieved by transmitting ultrasound. Since the blood in the blood vessel is a flowing object, a Doppler effect is generated between the ultrasonic vibration source and the relatively moving blood. When the blood moves toward the ultrasonic source, the wavelength of the reflected wave is compressed, and thus the frequency is increased. When the blood leaves the super-source movement, the wavelength of the reflected wave becomes longer and the frequency becomes smaller. The amount by which the frequency of the reflected wave is increased or decreased is proportional to the flow velocity of the blood, so that the flow rate of the blood can be measured based on the amount of frequency shift of the ultrasonic wave.

However, the signal detected by the Doppler effect detection method is very weak, is susceptible to interference, and has low detection accuracy.

In response to the above problems, no effective solution has been proposed yet.

Summary of the invention

The embodiment of the present application provides a method, a device and a detector for detecting a physiological tissue, so as to at least solve the technical problem that the detection accuracy is low due to poor anti-interference ability of the detector when detecting the physiological tissue in the prior art.

According to an aspect of embodiments of the present application, there is provided a method of detecting a physiological tissue, comprising: detecting a modulated electric field comprising a physiological tissue motion signal, wherein an electric field between the first electrode and the second electrode of the detector is physiologically organized Forming the modulated electric field after the motion is disturbed; determining whether the first parameter of the modulated electric field is within a first predetermined range, wherein the first parameter is used to represent noise or a signal of the modulated electric field; The first parameter of the modulated electric field is not within the first preset range, and the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to obtain a first frequency, wherein the frequency of the electrical signal transmitted by the transceiver circuit is The first parameter of the modulated electric field is within the first predetermined range, the transmitting end of the transceiver circuit is connected to the first electrode, and the receiving and receiving circuit is received. The end is connected to the second electrode; when the frequency of the electrical signal transmitted by the transceiver circuit is the first frequency, the waveform parameter is output according to the modulated electric field Physiological tissue movement.

Optionally, after the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to obtain the first frequency, the method further includes: acquiring a geographic location where the detector is located; and storing the first frequency in association with the geographic location .

Optionally, after the first frequency is stored in association with the geographic location, the method further includes: acquiring a target geographic location where the probe is currently located; searching the data location for the target geographic location The associated frequency, and the frequency associated with the target geographic location is taken as the first frequency.

Optionally, after the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to obtain the first frequency, the method further includes: acquiring a user identifier corresponding to the physiological tissue detected by the detector; and using the first frequency and the location The user ID is associated with the storage.

Optionally, after the first frequency is stored in association with the user identifier, the method further includes: acquiring a target user identifier corresponding to the physiological organization currently detected by the probe; searching for the location from the data table. The frequency to which the target user identifier is associated, and the frequency associated with the target user identifier is taken as the first frequency.

Optionally, adjusting the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency comprises: adjusting a frequency of the electrical signal transmitted by the transceiver circuit to obtain a plurality of second frequencies, wherein when the electrical signal is transmitted by the transceiver circuit When the frequency is the second frequency, the first parameter of the modulated electric field is within the first preset range; acquiring a signal to noise ratio of the modulated electric field corresponding to each of the second frequencies; The second frequency corresponding to the maximum signal to noise ratio is used as the first frequency.

Optionally, the first parameter is any one of the following: a signal to noise ratio, a noise intensity, and an electric field strength.

Optionally, the movement of the physiological tissue is a beating of an arterial blood vessel.

Optionally, the movement of the physiological tissue is a beating of the heart.

Optionally, the frequency of the electrical signal transmitted by the transceiver circuit is a point frequency.

According to still another aspect of the embodiments of the present application, a method for detecting a physiological tissue includes: detecting a first modulated electric field and a second modulated electric field including a physiological tissue motion signal, wherein the detector includes a first detecting structure and a a second detecting structure, wherein the first detecting structure comprises a first transceiver circuit, a first electrode and a second electrode, and the second detecting structure comprises a second transceiver circuit, a third electrode and a fourth electrode, the first Forming the first modulated electric field after the electric field between the electrode and the second electrode is disturbed by the movement of the physiological tissue, and the electric field between the third electrode and the fourth electrode is disturbed by the movement of the physiological tissue to form a place Determining a second modulated electric field; determining whether the first parameter and the second parameter are within a first predetermined range, wherein the first parameter is used to represent noise or a signal of the first modulated electric field, the second parameter a noise or a signal for indicating the second modulated electric field; if it is determined that the first parameter is not within the first preset range, adjusting the first transceiver circuit to send The frequency of the emitted electrical signal is obtained at a first frequency, wherein, when the frequency of the electrical signal transmitted by the first transceiver circuit is the first frequency, the first parameter is within the first preset range, The transmitting end of the first transceiver circuit is connected to the first electrode, and the receiving end of the first transceiver circuit is connected to the second electrode; if it is determined that the second parameter is not in the first pre Within the range, the frequency of the electrical signal transmitted by the second transceiver circuit is adjusted to obtain the first frequency, wherein when the frequency of the electrical signal transmitted by the second transceiver circuit is the first frequency, The second parameter is within the first predetermined range, the transmitting end of the second transceiver circuit is connected to the third electrode, and the receiving end of the second transceiver circuit is connected to the fourth electrode; And when the frequency of the electrical signal transmitted by the first transceiver circuit and the frequency of the electrical signal transmitted by the second transceiver circuit are both the first frequency, according to the first modulated electric field and the second modulated electric field Waveform parameter output physiological tissue motion Conditions.

Optionally, the frequencies of the electrical signals transmitted by the first transceiver circuit and the second transceiver circuit are both point frequencies.

According to still another aspect of embodiments of the present application, there is provided a probe for detecting a state of a physiological tissue, comprising: a first electrode and a second electrode, wherein the first electrode and the second electrode constitute a first a transceiving electrode pair; a third electrode and a fourth electrode, wherein the third electrode and the fourth electrode constitute a second transceiving electrode pair; a first transceiver circuit, a transmitting end of the first transceiver circuit and the The first electrodes are connected, and the receiving end of the first transceiver circuit is connected to the second electrode, and is configured to detect when there is a physiological tissue to be detected between the first electrode and the second electrode An electric field between the first electrode and the second electrode; a second transceiver circuit, a transmitting end of the second transceiver circuit is connected to the third electrode, and a receiving end of the second transceiver circuit and the fourth The electrodes are connected for detecting an electric field between the third electrode and the fourth electrode when there is a physiological tissue to be detected between the third electrode and the fourth electrode.

According to still another aspect of embodiments of the present application, there is also provided a physiological tissue detecting apparatus, comprising: a detecting unit configured to detect a modulated electric field including a physiological tissue motion signal, wherein the first electrode and the second electrode of the detector The electric field between the electrodes is disturbed by the movement of the physiological tissue to form a modulated electric field; the determining unit is configured to determine whether the first parameter of the modulated electric field is within a first predetermined range, wherein the first parameter is used for a noise or a signal indicating the modulated electric field; the adjusting unit configured to adjust the transmitting and receiving circuit when the determining unit determines that the first parameter of the modulated electric field is not within the first preset range The frequency of the electrical signal is obtained at a first frequency, wherein, when the frequency of the electrical signal transmitted by the transceiver circuit is the first frequency, the first parameter of the modulated electric field is within the first predetermined range The transmitting end of the transceiver circuit is connected to the first electrode, the receiving end of the transceiver circuit is connected to the second electrode, and the output unit is set to The frequency of said electric signal is transmitted to the receiving circuit when the first frequency, the movement of the biological tissue according to the output waveform of the modulation parameter field.

Optionally, the device further includes: a first acquiring unit, configured to adjust the transmitting and receiving power at the adjusting unit After the frequency of the electrical signal transmitted by the road obtains the first frequency, the geographical location where the detector is located is acquired; the first storage unit is configured to store the first frequency in association with the geographical location.

Optionally, the device further includes: a second acquiring unit, configured to acquire a target that the probe is currently located after the first storage unit stores the first frequency in association with the geographical location a geographic location; a first lookup unit configured to look up a frequency associated with the target geographic location from a data table and to use the frequency associated with the target geographic location as the first frequency.

Optionally, the device further includes: a third acquiring unit, configured to acquire, after the adjusting unit adjusts a frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency, acquiring a physiological tissue detected by the detector User identification; a second storage unit configured to store the first frequency in association with the user identification.

Optionally, the device further includes: a fourth acquiring unit, configured to acquire, after the second storage unit stores the first frequency in association with the user identifier, acquire a physiological condition currently detected by the probe The target user identifier corresponding to the organization; the second search unit is configured to search for a frequency associated with the target user identifier from the data table, and use the frequency associated with the target user identifier as the first frequency.

Optionally, the adjusting unit includes: an adjusting subunit configured to adjust a frequency of an electrical signal transmitted by the transceiver circuit to obtain a plurality of second frequencies, wherein, when the frequency of the electrical signal transmitted by the transceiver circuit is The first parameter of the modulated electric field is within the first preset range; the acquiring subunit is configured to acquire the modulated electric field corresponding to each of the second frequencies a signal to noise ratio; a determining subunit, configured to use the second frequency corresponding to a maximum signal to noise ratio as the first frequency.

In the embodiment of the present application, when the first parameter is within the first preset range, the noise is small, the signal to noise of the modulated electric field is relatively high, the obtained waveform is ideal, and the detection precision is high. When there is an interference source around the detector, if the frequency of the interference source is the same as or close to the frequency of the electrical signal transmitted by the transceiver circuit, the noise is large, and the signal-to-noise ratio of the modulated electric field is relatively low, and the obtained waveform is not very Ideally, at this time, the first parameter is not within the first predetermined range, and at this time, the frequency of the electrical signal transmitted by the transceiver circuit needs to be adjusted. When the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to a certain frequency, the first parameter of the modulated electric field is detected within the first preset range, and the obtained parameters of the modulated electric field are ideal, indicating that the signal has been successfully avoided. The interference source, at this time, using this frequency as the first frequency, the frequency of the electrical signal transmitted by the transceiver circuit is no longer adjusted, so that the frequency of the electrical signal transmitted by the transceiver circuit is constant to the first frequency, and according to the waveform parameter of the modulated electric field The physiological tissue movement condition is output, and the technical effect of strong anti-interference ability and high detection precision when detecting the physiological tissue of the detector is achieved, thereby solving the technical problem that the detection precision is low due to poor anti-interference ability of the detector when detecting the physiological tissue in the prior art. .

DRAWINGS

The drawings described herein are provided to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments and their description are intended to be illustrative of the present application and are not to be construed as limiting. In the drawing:

1 is a flow chart of an alternative method of detecting physiological tissue in accordance with an embodiment of the present application;

2 is a schematic structural view of an optional detector for performing a method for detecting a physiological tissue according to an embodiment of the present application;

3 is a graph showing the relationship between the detected signal strength and the frequency of an electrical signal transmitted by a transceiver circuit in accordance with an embodiment of the present application;

4 is a schematic structural view of another optional detector for performing the detection method of the physiological tissue of the embodiment of the present application;

5 is a flow chart of another alternative method of detecting physiological tissue in accordance with an embodiment of the present application;

FIG. 6 is a schematic diagram of a detecting device of a physiological tissue according to an embodiment of the present application.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. It is an embodiment of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope shall fall within the scope of the application.

It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

According to an embodiment of the present application, an embodiment of a method of detecting a physiological tissue is provided, and it is to be noted that the steps illustrated in the flowchart of the accompanying drawings may be performed in a computer system such as a set of computer executable instructions, and Although the logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

1 is a flow chart of an alternative method of detecting physiological tissue according to an embodiment of the present application, as shown in FIG. The method includes the following steps:

Step S102, detecting a modulated electric field including a physiological tissue motion signal, wherein an electric field between the first electrode and the second electrode of the detector is disturbed by the motion of the physiological tissue to form a modulated electric field.

Step S104: Determine whether the first parameter of the modulated electric field is within a first preset range, wherein the first parameter is used to represent noise or a signal of the modulated electric field.

Step S106, if it is determined that the first parameter of the modulated electric field is not within the first preset range, adjusting the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency, wherein the frequency of the electrical signal transmitted by the transceiver circuit is the first frequency The first parameter of the modulated electric field is within a first predetermined range, the transmitting end of the transceiver circuit is coupled to the first electrode, and the receiving end of the transceiver circuit is coupled to the second electrode.

Step S108, when the frequency of the electrical signal transmitted by the transceiver circuit is the first frequency, the physiological tissue motion is output according to the waveform parameter of the modulated electric field.

Optionally, the first parameter is any one of the following: a signal to noise ratio, a noise intensity, an electric field strength, and the like. The first parameter can indicate the magnitude of the noise of the modulated electric field, the strength of the signal, or the waveform of the signal.

2 is a schematic view showing the structure of an optional detector for performing the detection method of the physiological tissue of the embodiment of the present application. As shown in FIG. 2, the detector includes a first electrode 22, a second electrode 24, and a transceiver circuit 26. The electric field between the first electrode 22 and the second electrode 24 is disturbed by the movement of the physiological tissue to form a modulated electric field.

When the first parameter is within the first preset range, the noise is small, the signal-to-noise of the modulated electric field is relatively high, the obtained waveform is ideal, and the detection precision is high. When there is an interference source around the detector, if the frequency of the interference source is the same as or close to the frequency of the electrical signal transmitted by the transceiver circuit, the noise is large, and the signal-to-noise ratio of the modulated electric field is relatively low, and the obtained waveform is not very Ideally, at this time, the first parameter is not within the first predetermined range, and at this time, the frequency of the electrical signal transmitted by the transceiver circuit needs to be adjusted. When the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to a certain frequency, the first parameter of the modulated electric field is detected within the first preset range, and the obtained parameters of the modulated electric field are ideal, indicating that the signal has been successfully avoided. The interference source, at this time, using this frequency as the first frequency, the frequency of the electrical signal transmitted by the transceiver circuit is no longer adjusted, so that the frequency of the electrical signal transmitted by the transceiver circuit is constant to the first frequency, and according to the waveform parameter of the modulated electric field The physiological tissue movement condition is output, and the technical problem that the detection precision is low due to the poor anti-interference ability of the detector when detecting the physiological tissue in the prior art is solved, and the technical effect of the anti-interference ability and the detection precision of the detector when detecting the physiological tissue is achieved.

For example, assuming that the signal strength is taken as the first parameter, FIG. 3 is a graph showing the relationship between the detected signal strength and the frequency of the electrical signal transmitted by the transceiver circuit. As can be seen from FIG. 3, when the frequency of the electrical signal transmitted by the transceiver circuit is between 530 MHz and 550 MHz, the signal strength is strong; wherein when the frequency of the electrical signal transmitted by the transceiver circuit is 540 MHz, the signal strength is strongest; The frequency of the electrical signal transmitted by the transceiver circuit is 540MHz to 600MHz. When in between, the signal strength becomes weak as the frequency of the electrical signal transmitted by the transceiver circuit increases. This shows that 540MHz can be used as the first frequency, and at the frequency of 540MHz, the first parameter (signal strength) obtained is ideal.

Alternatively, the motion of the physiological tissue is the pulsation of the arterial blood vessels. Alternatively, the movement of the physiological tissue is the pulsation of the heart.

For example, an embodiment of the present application provides a detector. As shown in FIG. 4, the detector includes a first electrode 22, a second electrode 24, a third electrode 32, a fourth electrode 34, a first transceiver circuit 28, and a second transceiver circuit 38. The first electrode and the second electrode constitute a first transceiving electrode pair. The third electrode and the fourth electrode constitute a second transceiving electrode pair. The transmitting end of the first transceiver circuit is connected to the first electrode, and the receiving end of the first transceiver circuit is connected to the second electrode. The transmitting end of the second transceiver circuit is connected to the third electrode, and the receiving end of the second transceiver circuit is connected to the fourth electrode. Using the detector provided by the embodiment of the present application to detect the pulse wave velocity PWV, when a pulse of the heart causes the pulse wave to transmit on the artery, the first transceiver circuit detects a change in the electric field between the pair of the first transceiver electrode, and At the time t1 of recording, the second transceiver circuit detects a change in the electric field between the pair of second transceiving electrodes, and records the time t2. Assuming that the distance between the two circuits is d, the speed of the patient's blood flow can be calculated according to d, t1, and t2, and the speed of the pulse wave of the patient is the pulse wave motion speed PWV, PWV = d / (t2-t1). The frequency used by each transceiver electrode pair is frequency adaptive, or frequency modulated, according to the method of the embodiment of the present application.

The frequency of the electrical signal transmitted by the transceiver circuit in the embodiment of the present application is a point frequency.

Optionally, after adjusting the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency, the method further includes: acquiring a geographic location where the detector is located; and storing the first frequency in association with the geographic location.

Optionally, after the first frequency is stored in association with the geographic location, the method further includes: acquiring a target geographic location where the probe is currently located; finding a frequency associated with the target geographic location from the data table, and using the target geographic location The associated frequency is taken as the first frequency.

Sometimes, when the detector is working, there is a source of interference around. When the frequency of the interference source is equal to or close to the frequency of the electrical signal transmitted by the transceiver circuit of the detector, it has a great influence on the detection accuracy of the detector; When the frequency of the interference source differs greatly from the frequency of the electrical signal transmitted by the transceiver circuit of the detector, the impact on the detection accuracy of the detector is small. Therefore, the frequency of the electrical signal transmitted by the transceiver transceiver circuit should be adjusted such that the frequency of the electrical signal transmitted by the transceiver circuit differs greatly from the frequency of the surrounding interference source to avoid interference from the surrounding environment.

When the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to a certain frequency, the first parameter of the detected modulated electric field is within the first preset range. At this time, the frequency is used as the first frequency and is no longer transmitted to the transceiver circuit. The frequency of the electrical signal is adjusted such that the frequency of the electrical signal transmitted by the transceiver circuit is constant to the first frequency. At this time, the geographical location of the detector is acquired by the GPS signal, and the first frequency is stored in association with the geographical location where the detector is located. The role of storage is to facilitate future search. When the detector is working in the same place later, you can directly find and use it. The first frequency associated with the location (the current geographical location of the target) adjusts the frequency of the electrical signal transmitted by the transceiver circuit to the first frequency, which achieves the effect of adaptive detection.

When the detector is working, first obtain the geographical location of the detector. If the current location of the detector is L2 (the current geographical location of the target), look for the location L2 associated with the location from Table 1. At a frequency, the first frequency associated with the location L2 is 590 MHz. At this time, the frequency of the electrical signal transmitted by the transceiver transceiver circuit is directly adjusted to 590 MHz. When the detector is in the geographical position L2 and the frequency of the electrical signal transmitted by the transceiver circuit is 590 MHz, the obtained first parameter is within the first preset range, for example, the acquired signal to noise ratio is higher than the preset value.

Table 1

Geographic location	First frequency
Location L1	550MHz
Location L2	590MHz
Location L3	480MHz

Optionally, after the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to obtain the first frequency, the method further includes: acquiring a user identifier corresponding to the physiological organization detected by the detector; and storing the first frequency in association with the user identifier.

Optionally, after the first frequency is stored in association with the user identifier, the method further includes: acquiring a target user identifier corresponding to the physiological organization currently detected by the probe; searching for a frequency associated with the target user identifier from the data table, and The frequency associated with the target user identity is taken as the first frequency.

Due to the difference in physical fitness of each person, the best working frequency is different when the same detector detects the physiological tissues of different users. When the detector detects the physiological tissue of a user, when the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to a certain frequency, the first parameter of the detected modulated electric field is within the first preset range. The frequency is used as the first frequency, and the frequency of the electrical signal transmitted by the transceiver circuit is no longer adjusted, so that the frequency of the electrical signal transmitted by the transceiver circuit is constant to the first frequency, and the user identifier of the user is obtained, and the first frequency and the user identifier are obtained. Associate storage. The function of the storage is to facilitate the search in the future. When the detector detects the physiological organization of the user later, the first frequency associated with the user can be directly searched, and the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to be the first frequency. The effect of adaptive detection is achieved. By recording the optimal working frequency of the detector corresponding to the user, the next time the physical tissue of the same user is detected, the first frequency is directly searched and used from the data table, thereby avoiding repeatedly adjusting the frequency of the electrical signal transmitted by the transceiver circuit. The resulting operation is cumbersome and time consuming.

When the detector is working, first obtain the identifier of the user currently detected by the probe, assuming that the detector is currently exploring The measured user's identifier is Z1 (target user identifier), then the first frequency associated with the user identifier Z1 is looked up from Table 2, and the first frequency associated with the user identifier Z1 is found to be 540 MHz. At this time, the detector is directly sent and received. The frequency of the electrical signal transmitted by the circuit is adjusted to 540 MHz. The detector detects the physiological organization of the user whose user identifier is Z1. When the frequency of the electrical signal transmitted by the transceiver circuit is 540 MHz, the obtained first parameter is within the first preset range. For example, the acquired waveform is very good. Or the electric field strength obtained is greater than a preset value.

Table 2

Geographic location	First frequency
User ID Z1	540MHz
User ID Z2	570MHz
User ID Z3	500MHz

Optionally, adjusting the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency comprises: adjusting a frequency of the electrical signal transmitted by the transceiver circuit to obtain a plurality of second frequencies, wherein when the frequency of the electrical signal transmitted by the transceiver circuit is the second At a frequency, the first parameter of the modulated electric field is within the first predetermined range; the signal-to-noise ratio of the modulated electric field corresponding to each second frequency is obtained; and the second frequency corresponding to the maximum signal-to-noise ratio is used as the first frequency.

In the process of adjusting the frequency of the electrical signal transmitted by the transceiver circuit, there may be multiple frequencies of the first parameter of the modulated electric field within the first preset range, and the multiple frequencies are all the second frequencies. An optimum detector operating frequency is found from the plurality of second frequencies as the first frequency. Obtaining a signal-to-noise ratio of a modulated electric field corresponding to each second frequency, and using a second frequency corresponding to the maximum signal-to-noise ratio as the first frequency, so that when the frequency of the electrical signal transmitted by the transceiver circuit is adjusted to be the first frequency, The signal-to-noise ratio is the largest, which is beneficial to the detection of electric field signals, strong resistance to external interference, and high accuracy of detection.

According to an embodiment of the present application, a method of detecting a physiological tissue is also provided. 5 is a flow chart of another alternative method of detecting physiological tissue in accordance with an embodiment of the present application. As shown in FIG. 5, the method includes the following steps:

Step S502, detecting a first modulated electric field and a second modulated electric field including a physiological tissue motion signal, wherein the detector comprises a first detecting structure and a second detecting structure, wherein the first detecting structure comprises a first transmitting and receiving circuit and a first electrode And a second electrode, the second detecting structure comprises a second transceiver circuit, a third electrode and a fourth electrode, wherein the electric field between the first electrode and the second electrode is disturbed by the movement of the physiological tissue to form a first modulated electric field, and the third electrode The electric field between the fourth electrode and the fourth electrode is disturbed by the motion of the physiological tissue to form a second modulated electric field.

Step S504, determining whether the first parameter and the second parameter are within a first preset range, wherein the first parameter A noise or signal used to represent the first modulated electric field, and a second parameter is used to represent the noise or signal of the second modulated electric field.

Step S506, if it is determined that the first parameter is not within the first preset range, adjusting a frequency of the electrical signal transmitted by the first transceiver circuit to obtain a first frequency, wherein a frequency of the electrical signal transmitted by the first transceiver circuit is first At the frequency, the first parameter is within the first predetermined range, the transmitting end of the first transceiver circuit is connected to the first electrode, and the receiving end of the first transceiver circuit is connected to the second electrode.

Step S508, if it is determined that the second parameter is not within the first preset range, adjusting a frequency of the electrical signal transmitted by the second transceiver circuit to obtain a first frequency, wherein a frequency of the electrical signal transmitted by the second transceiver circuit is first At the frequency, the second parameter is within the first predetermined range, the transmitting end of the second transceiver circuit is connected to the third electrode, and the receiving end of the second transceiver circuit is connected to the fourth electrode.

Step S510, when the frequency of the electrical signal transmitted by the first transceiver circuit and the frequency of the electrical signal transmitted by the second transceiver circuit are both the first frequency, the physiological tissue motion is output according to the waveform parameters of the first modulated electric field and the second modulated electric field. .

In the embodiment of the present application, when both the first parameter and the second parameter are within the first preset range, the noise is small, the signal and noise of the two modulated electric fields are relatively high, and the obtained waveform is ideal, and the detection precision is high. . When there is an interference source around the detector, if the frequency of the interference source is the same as or close to the frequency of the electrical signal transmitted by the transceiver circuit, the noise is large, and the signal-to-noise ratio of the modulated electric field is relatively low, and the obtained waveform is not very Ideally, at this time, the first parameter or the second parameter is not within the first preset range, and at this time, the frequency of the electrical signal transmitted by the transceiver circuit needs to be adjusted. When the frequency of the electrical signals transmitted by the two transceiver circuits is adjusted to a certain frequency, it is detected that the first parameter and the second parameter are all within the first preset range, indicating that the interference source has been successfully avoided, and at this time, This frequency is used as the first frequency, and the frequency of the electrical signals transmitted by the two transceiver circuits is no longer adjusted, so that the frequency of the electrical signals transmitted by the transceiver circuit is constant to the first frequency, and the physiological tissue motion is output according to the waveform parameters of the modulated electric field. The technical effect of strong anti-interference ability and high detection precision when detecting the physiological tissue of the detector is achieved.

Optionally, the frequencies of the electrical signals transmitted by the first transceiver circuit and the second transceiver circuit are both point frequencies.

According to still another aspect of embodiments of the present application, a probe for detecting a state of a physiological tissue is also provided.

As shown in FIG. 4, the detector includes a first electrode 22, a second electrode 24, a third electrode 32, a fourth electrode 34, a first transceiver circuit 28, and a second transceiver circuit 38. The first electrode and the second electrode constitute a first transceiving electrode pair. The third electrode and the fourth electrode constitute a second transceiving electrode pair. The transmitting end of the first transceiver circuit is connected to the first electrode, and the receiving end of the first transceiver circuit is connected to the second electrode. The first transceiver circuit is configured to detect an electric field between the first electrode and the second electrode when there is a physiological tissue to be detected between the first electrode and the second electrode. The transmitting end of the second transceiver circuit is connected to the third electrode, and the receiving end of the second transceiver circuit is connected to the fourth electrode. Second transceiver circuit When there is a physiological tissue to be detected between the third electrode and the fourth electrode, an electric field between the third electrode and the fourth electrode is detected.

Using the detector provided by the embodiment of the present application to detect the pulse wave velocity PWV, when a pulse of the heart causes the pulse wave to transmit on the artery, the first transceiver circuit detects a change in the electric field between the pair of the first transceiver electrode, and At the time t1 of recording, the second transceiver circuit detects a change in the electric field between the pair of second transceiving electrodes, and records the time t2. Assuming that the distance between the two circuits is d, the speed of the patient's blood flow can be calculated according to d, t1, and t2, and the speed of the pulse wave of the patient is the pulse wave motion speed PWV, PWV = d / (t2-t1). In this embodiment, the frequency used by each transceiver electrode pair is frequency adaptive, or frequency modulated, in accordance with the method of this patent.

The frequency of the electrical signal transmitted by the transceiver circuit in the embodiment of the present application is a point frequency.

According to an embodiment of the present application, a detecting device for a physiological tissue is also provided. The detection device of the physiological tissue can perform the above-described detection method of the physiological tissue, and the detection method of the physiological tissue can also be performed by the detection device of the physiological tissue.

FIG. 6 is a schematic diagram of a detecting device of a physiological tissue according to an embodiment of the present application. As shown in FIG. 6, the apparatus includes a detecting unit 10, a judging unit 20, an adjusting unit 30, and an output unit 40.

The detecting unit 10 is configured to detect a modulated electric field comprising a physiological tissue motion signal, wherein an electric field between the first electrode and the second electrode of the detector is disturbed by movement of the physiological tissue to form a modulated electric field.

The determining unit 20 is configured to determine whether the first parameter of the modulated electric field is within a first predetermined range, wherein the first parameter is used to represent noise or a signal of the modulated electric field.

The adjusting unit 30 is configured to: when the determining unit 20 determines that the first parameter of the modulated electric field is not within the first preset range, adjust the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency, where the transmitting and receiving circuit transmits When the frequency of the electrical signal is the first frequency, the first parameter of the modulated electric field is within the first predetermined range, the transmitting end of the transceiver circuit is connected to the first electrode, and the receiving end of the transceiver circuit is connected to the second electrode.

The output unit 40 is configured to output a physiological tissue motion according to a waveform parameter of the modulated electric field when the frequency of the electrical signal transmitted by the transceiver circuit is the first frequency.

Optionally, the device further includes a first acquisition unit and a first storage unit. The first obtaining unit is configured to acquire the geographical location where the detector is located after the adjusting unit 30 adjusts the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency. The first storage unit is configured to store the first frequency in association with the geographic location.

Optionally, the device further includes a second obtaining unit and a first searching unit. The second obtaining unit is configured to acquire the target geographic location where the probe is currently located after the first storage unit stores the first frequency in association with the geographic location. a first lookup unit configured to look up the frequency associated with the target geographic location from the data table and The frequency associated with the target geographic location is taken as the first frequency.

Optionally, the apparatus further includes a third acquisition unit and a second storage unit. The third obtaining unit is configured to acquire the user identifier corresponding to the physiological tissue detected by the probe after the adjusting unit 30 adjusts the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency. The second storage unit is configured to store the first frequency in association with the user identification.

Optionally, the device further includes a fourth obtaining unit and a second searching unit. The fourth obtaining unit is configured to acquire, after the second storage unit stores the first frequency in association with the user identifier, the target user identifier corresponding to the physiological organization currently detected by the probe. The second searching unit is configured to look up the frequency associated with the target user identifier from the data table, and use the frequency associated with the target user identifier as the first frequency.

Optionally, the adjustment unit 30 includes an adjustment subunit, an acquisition subunit, and a determination subunit. The adjusting subunit is configured to adjust a frequency of the electrical signal transmitted by the transceiver circuit to obtain a plurality of second frequencies, wherein when the frequency of the electrical signal transmitted by the transceiver circuit is the second frequency, the first parameter of the modulated electric field is first Within the preset range. The acquisition subunit is configured to acquire a signal to noise ratio of a modulated electric field corresponding to each second frequency. The determining subunit is set to use the second frequency corresponding to the maximum signal to noise ratio as the first frequency.

In the above-mentioned embodiments of the present application, the descriptions of the various embodiments are different, and the parts that are not detailed in a certain embodiment can be referred to the related descriptions of other embodiments.

In the several embodiments provided by the present application, it should be understood that the disclosed technical contents may be implemented in other manners. The device embodiments described above are only schematic. For example, the division of the unit may be a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or may be Integrate into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, unit or module, and may be electrical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the essence of the technical solution of the present application The portion contributing to or contributing to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for causing a computer device All or part of the steps of the method described in the various embodiments of the present application may be performed (for a personal computer, server or network device, etc.). The foregoing storage medium includes: a U disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk, and the like. .

The above description is only a preferred embodiment of the present application, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present application. It should be considered as the scope of protection of this application.

Claims (19)

1. A method for detecting physiological tissues, comprising:

   Detecting a modulated electric field comprising a physiological tissue motion signal, wherein an electric field between the first electrode and the second electrode of the detector is disturbed by movement of the physiological tissue to form the modulated electric field;

   Determining whether the first parameter of the modulated electric field is within a first predetermined range, wherein the first parameter is used to represent noise or a signal of the modulated electric field;

   If it is determined that the first parameter of the modulated electric field is not within the first predetermined range, adjusting a frequency of an electrical signal transmitted by the transceiver circuit to obtain a first frequency, wherein an electrical signal transmitted by the transceiver circuit When the frequency is the first frequency, the first parameter of the modulated electric field is within the first preset range, and the transmitting end of the transceiver circuit is connected to the first electrode, and the transceiver circuit The receiving end is connected to the second electrode;

   When the frequency of the electrical signal transmitted by the transceiver circuit is the first frequency, the physiological tissue motion is output according to the waveform parameter of the modulated electric field.
2. The method of claim 1, wherein after adjusting the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency, the method further comprises:

   Obtaining the geographical location of the detector;

   The first frequency is stored in association with the geographic location.
3. The method of claim 2, wherein after the storing the first frequency in association with the geographic location, the method further comprises:

   Obtaining a target geographic location where the detector is currently located;

   Finding a frequency associated with the target geographic location from a data table, and using the frequency associated with the target geographic location as the first frequency.
4. The method of claim 1, wherein after adjusting the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency, the method further comprises:

   Obtaining a user identifier corresponding to the physiological tissue detected by the detector;

   The first frequency is stored in association with the user identification.
5. The method of claim 4 wherein said first frequency is associated with said user identification store Thereafter, the method further includes:

   Obtaining a target user identifier corresponding to the physiological tissue currently detected by the probe;

   Finding a frequency associated with the target user identifier from a data table, and using a frequency associated with the target user identifier as the first frequency.
6. The method of claim 1 wherein adjusting the frequency of the electrical signal transmitted by the transceiver circuit to obtain the first frequency comprises:

   Adjusting a frequency of the electrical signal transmitted by the transceiver circuit to obtain a plurality of second frequencies, wherein the first parameter of the modulated electric field when the frequency of the electrical signal transmitted by the transceiver circuit is the second frequency Within the first predetermined range;

   Obtaining a signal to noise ratio of the modulated electric field corresponding to each of the second frequencies;

   The second frequency corresponding to the maximum signal to noise ratio is taken as the first frequency.
7. The method of claim 1, wherein the first parameter is any one of the following: a signal to noise ratio, a noise intensity, and an electric field strength.
8. The method of claim 1 wherein the movement of the physiological tissue is a beating of an arterial vessel.
9. The method of claim 1 wherein the movement of the physiological tissue is a beating of the heart.
10. The method of claim 1 wherein the frequency of the electrical signal transmitted by the transceiver circuit is a point frequency.
11. A method for detecting physiological tissues, comprising:

    Detecting a first modulated electric field and a second modulated electric field comprising a physiological tissue motion signal, wherein the detector comprises a first detection structure and a second detection structure, wherein the first detection structure comprises a first transceiver circuit, a first electrode, and a second electrode, the second detecting structure includes a second transceiver circuit, a third electrode, and a fourth electrode, wherein an electric field between the first electrode and the second electrode is disturbed by movement of a physiological tissue to form the first electrode a modulated electric field, the electric field between the third electrode and the fourth electrode is disturbed by the movement of the physiological tissue to form the second modulated electric field;

    Determining whether the first parameter and the second parameter are within a first preset range, wherein the first parameter is used to represent noise or a signal of the first modulated electric field, and the second parameter is used to represent the first parameter Two modulating the noise or signal of the electric field;

    If it is determined that the first parameter is not within the first preset range, adjusting a frequency of the electrical signal transmitted by the first transceiver circuit to obtain a first frequency, wherein the electrical signal transmitted by the first transceiver circuit When the frequency is the first frequency, the first parameter is within the first preset range, and the transmitting end of the first transceiver circuit is connected to the first electrode, the first transceiver circuit The receiving end is connected to the second electrode;

    If it is determined that the second parameter is not within the first preset range, adjusting a frequency of an electrical signal transmitted by the second transceiver circuit to obtain the first frequency, where the second transceiver circuit transmits When the frequency of the electrical signal is the first frequency, the second parameter is within the first preset range, and the transmitting end of the second transceiver circuit is connected to the third electrode, the second a receiving end of the transceiver circuit is connected to the fourth electrode;

    And when the frequency of the electrical signal transmitted by the first transceiver circuit and the frequency of the electrical signal transmitted by the second transceiver circuit are both the first frequency, according to the first modulated electric field and the second modulated electric field The waveform parameters output physiological tissue motion.
12. The method of claim 11, wherein the frequencies of the electrical signals transmitted by the first transceiver circuit and the second transceiver circuit are both point frequencies.
13. A detector for detecting physiological tissue states, comprising:

    a first electrode and a second electrode, wherein the first electrode and the second electrode constitute a first pair of transceiver electrodes;

    a third electrode and a fourth electrode, wherein the third electrode and the fourth electrode constitute a second pair of transceiver electrodes;

    a first transceiver circuit, a transmitting end of the first transceiver circuit is connected to the first electrode, and a receiving end of the first transceiver circuit is connected to the second electrode, and is configured to be at the first electrode and Detecting an electric field between the first electrode and the second electrode when there is a physiological tissue to be detected between the second electrodes;

    a second transceiver circuit, a transmitting end of the second transceiver circuit is connected to the third electrode, and a receiving end of the second transceiver circuit is connected to the fourth electrode, and is used in the third electrode and When there is a physiological tissue to be detected between the fourth electrodes, an electric field between the third electrode and the fourth electrode is detected.
14. A physiological tissue detecting device comprising:

    a detecting unit configured to detect a modulated electric field including a physiological tissue motion signal, wherein an electric field between the first electrode and the second electrode of the detector is disturbed by movement of the physiological tissue to form a modulated electric field;

    a determining unit, configured to determine whether the first parameter of the modulated electric field is within a first preset range, wherein the first parameter is used to represent noise or a signal of the modulated electric field;

    The adjusting unit is configured to: when the determining unit determines that the first parameter of the modulated electric field is not within the first preset range, adjust a frequency of an electrical signal transmitted by the transceiver circuit to obtain a first frequency, where And when the frequency of the electrical signal transmitted by the transceiver circuit is the first frequency, the first parameter of the modulated electric field is within the first preset range, and the transmitting end of the transceiver circuit is The first electrodes are connected, and the receiving end of the transceiver circuit is connected to the second electrode;

    And an output unit configured to output a physiological tissue motion according to a waveform parameter of the modulated electric field when a frequency of the electrical signal transmitted by the transceiver circuit is the first frequency.
15. The apparatus of claim 14 wherein said apparatus further comprises:

    a first acquiring unit, configured to acquire a geographical location where the detector is located after the adjusting unit adjusts a frequency of an electrical signal transmitted by the transceiver circuit to obtain a first frequency;

    The first storage unit is configured to store the first frequency in association with the geographic location.
16. The apparatus of claim 15 wherein said apparatus further comprises:

    a second acquiring unit, configured to acquire, after the first storage unit stores the first frequency and the geographical location, a target geographic location where the probe is currently located;

    The first searching unit is configured to search for a frequency associated with the target geographic location from the data table, and use a frequency associated with the target geographic location as the first frequency.
17. The apparatus of claim 14 wherein said apparatus further comprises:

    a third obtaining unit, configured to acquire a user identifier corresponding to the physiological tissue detected by the detector after the adjusting unit adjusts a frequency of the electrical signal transmitted by the transceiver circuit to obtain a first frequency;

    A second storage unit is configured to store the first frequency in association with the user identification.
18. The apparatus of claim 17 wherein said apparatus further comprises:

    a fourth acquiring unit, configured to acquire, after the second storage unit stores the first frequency in association with the user identifier, a target user identifier corresponding to the physiological organization currently detected by the probe;

    The second searching unit is configured to search for a frequency associated with the target user identifier from the data table, and use the frequency associated with the target user identifier as the first frequency.
19. The apparatus of claim 14, wherein the adjustment unit comprises:

    a adjusting subunit, configured to adjust a frequency of the electrical signal transmitted by the transceiver circuit to obtain a plurality of second frequencies, wherein when the frequency of the electrical signal transmitted by the transceiver circuit is the second frequency, the adjusting The first parameter of the electric field is within the first predetermined range;

    Obtaining a subunit, configured to obtain a signal to noise ratio of the modulated electric field corresponding to each of the second frequencies;

    The determining subunit is set to use the second frequency corresponding to the maximum signal to noise ratio as the first frequency.

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