CN211749562U - Blood pressure measuring device and have its intelligent wrist-watch - Google Patents
Blood pressure measuring device and have its intelligent wrist-watch Download PDFInfo
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- CN211749562U CN211749562U CN201921242209.3U CN201921242209U CN211749562U CN 211749562 U CN211749562 U CN 211749562U CN 201921242209 U CN201921242209 U CN 201921242209U CN 211749562 U CN211749562 U CN 211749562U
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Abstract
The utility model provides a blood pressure measuring device and have its intelligent wrist-watch, includes pulse wave sensor, electrocardio sensor and processing unit, electrocardio sensor contains two at least electrocardio electrodes for contact with the human body and acquire the heart electrograph signal, pulse wave sensor and at least one electrocardio electrode is located the same measuring position, pulse wave sensor reaches electrocardio sensor all with processing unit electrical property links to each other, pulse wave sensor with the pulse wave signal transmission who detects extremely processing unit, electrocardio sensor with the heart electrograph signal transmission who detects extremely processing unit, processing unit carries out the calculation of blood pressure according to pulse wave signal and heart electrograph signal. The blood pressure measuring device can well measure the blood pressure.
Description
Technical Field
The utility model belongs to the technical field of wearable equipment technique and specifically relates to a blood pressure measuring device and have its intelligent wrist-watch.
Background
The electrocardiogram, heart rate, blood oxygen saturation and blood pressure values are important health parameters reflecting human health. Along with the environmental deterioration, the threat of food safety problem, the acceleration of life rhythm and the increase of working pressure, the morbidity of various chronic diseases is also improved year by year, and the chronic diseases are younger, so that modern people are promoted to pay more attention to the self health monitoring.
However, the traditional medical monitoring equipment is large in size, high in power consumption, inconvenient to carry, single in function and difficult to go deep into daily life to collect health data of a human body for health management and disease prevention. Wearable electronic equipment provides possibility for health monitoring, but present wearable equipment is mainly the bracelet more, can only monitor oxyhemoglobin saturation and rhythm of the heart simply.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a blood pressure measuring device and have its intelligent wrist-watch, this blood pressure measuring device can be better treats and measures blood pressure.
The utility model provides a blood pressure measuring device, which comprises a pulse wave sensor, an electrocardio sensor and a processing unit,
the electrocardio-sensor comprises at least two electrocardio-electrodes which are used for contacting with a human body to obtain electrocardiogram signals,
the pulse wave sensor and at least one electrocardio-electrode are positioned at the same measuring position,
the pulse wave sensor and the electrocardio sensor are both electrically connected with the processing unit,
the pulse wave sensor transmits the detected pulse wave signals to the processing unit, the electrocardio sensor transmits the detected electrocardiogram signals to the processing unit,
the processing unit calculates the blood pressure according to the pulse wave signal and the electrocardiogram signal.
Further, the pulse wave sensor is a photoelectric volume pulse wave sensor and/or a pressure pulse wave sensor.
Further, the measurement position is a fingertip, a wrist, an upper arm, or an ear.
Further, the pulse wave sensor is exposed on the surface of the electrocardio-electrode, which is used for contacting with the part to be measured.
Furthermore, the pulse wave sensor is arranged in the middle of the electrocardio-electrode, or in a gap on the side of the electrocardio-electrode, or is arranged side by side with the electrocardio-electrode.
Furthermore, the pulse wave sensor is arranged below the electrocardio-electrode and is far away from one side of the electrode surface of the electrocardio-electrode, which is used for contacting with the part to be measured.
Further, the pulse wave sensor comprises a photoelectric volume pulse wave sensor, and the electrocardio-electrode can at least partially transmit light emitted by a light source of the photoelectric pulse wave sensor and light reflected by a human body.
Further, the electrocardio-electrode is a transparent electrode.
Further, the electrode surface of the electrocardio-electrode, which is used for contacting with the part to be measured, is a cambered surface.
Further, the blood pressure measuring device also comprises an electrode substrate, and the electrocardio-electrode is arranged on the electrode substrate.
Further, the electrode substrate is provided with an arc surface, and the arc surface of the electrode substrate is matched with the arc surface of the electrocardio-electrode.
Further, the blood pressure measuring device further comprises a contact pressure detector,
the contact pressure detector is arranged on one side of the electrocardio-electrode away from a contact surface used for contacting with a part to be detected,
the contact pressure detector detects the real-time pressure on the electrocardio sensor and transmits the real-time pressure signal to the processing unit,
and the processing unit wakes up the pulse wave sensor to measure the blood pressure according to the real-time pressure signal.
Further, the contact pressure detector is a pressure type pulse wave sensor.
Furthermore, the blood pressure measuring device further comprises a prompting module, the processing unit is electrically connected with the prompting module, and when the real-time pressure is smaller than the lowest pressure threshold value or larger than the highest pressure threshold value, the processing unit controls the prompting module to prompt the contact pressure between the part to be detected and the electrocardio-electrode.
The utility model also provides an intelligent watch, this intelligent watch include foretell blood pressure measuring device.
Furthermore, the electrocardio sensor comprises a first electrocardio electrode and a second electrocardio electrode, and the first electrocardio electrode is arranged on the back of the watch dial; the second electrocardio electrode is arranged on the front surface of the watch dial or the side surface of the watch dial.
Further, the blood pressure measuring device further comprises an electrode substrate, the second electrocardio electrode is arranged on the electrode substrate, the electrode substrate is arranged on the dial plate of the intelligent watch, and the height of the electrode substrate is reduced from the side close to the middle of the dial plate to the side close to the edge of the dial plate.
To sum up, the utility model discloses in, through integrating pulse wave sensor on electrocardio sensor's electrocardioelectrode, can make PPG signal and ECG signal synchronous completely in time, accurately measure the PTT signal. Meanwhile, the structure can reduce the contact area of the blood pressure measuring device and the human body as much as possible during measurement. To better measure blood pressure. Further, by providing the pressure sensor, it is possible to prevent interference due to contact pressure as much as possible and to measure the blood pressure more accurately.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic top view of a blood pressure measuring device according to a first embodiment of the present invention.
FIG. 2 is a system block diagram of the blood pressure measuring device in FIG. 1
Fig. 3 is a schematic view showing the principle of blood pressure measurement using the blood pressure measuring device of fig. 1.
FIG. 4 is a schematic diagram of signal processing when the pulse wave sensor in FIG. 1 is a piezoelectric pulse wave sensor.
Fig. 5 is a schematic diagram of the blood pressure measuring device of fig. 1 when performing filtering processing.
Fig. 6 is a schematic cross-sectional view of a blood pressure measuring device according to a second embodiment of the present invention.
Fig. 7 is a schematic side view of the blood pressure measuring device shown in fig. 6 mounted on a smart watch.
Fig. 8 is a schematic top view of a blood pressure measuring device according to a third embodiment of the present invention.
Fig. 9 is a schematic top view of a blood pressure measuring device according to a fourth embodiment of the present invention.
Fig. 10 is a schematic cross-sectional view of a blood pressure measuring device according to a fifth embodiment of the present invention.
Fig. 11 is a system block diagram of the blood pressure measuring apparatus provided in fig. 10.
Fig. 12 is a logic control diagram of the blood pressure measuring device provided in fig. 10.
Fig. 13 is a schematic cross-sectional view of a blood pressure measuring device according to a sixth embodiment of the present invention.
Fig. 14 is a schematic cross-sectional view of a blood pressure measuring device according to a seventh embodiment of the present invention.
Fig. 15 is a schematic cross-sectional view of a blood pressure measuring device according to an eighth embodiment of the present invention.
Fig. 16 is a schematic cross-sectional view of a blood pressure measuring device according to a ninth embodiment of the present invention.
Fig. 17 is a schematic cross-sectional view of a blood pressure measuring device according to a tenth embodiment of the present invention.
Fig. 18 is a schematic cross-sectional view of a blood pressure measuring device according to an eleventh embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the invention, the following detailed description is given with reference to the accompanying drawings and preferred embodiments.
The utility model provides a blood pressure measuring device and have its intelligent wrist-watch, this blood pressure measuring device can better treat and measure blood pressure.
Fig. 1 is a schematic top view of a blood pressure measuring device according to a first embodiment of the present invention, and fig. 2 is a system block diagram of the blood pressure measuring device shown in fig. 1. As shown in fig. 1 and fig. 2, the utility model provides a blood pressure measuring device includes pulse wave sensor 10, electrocardio sensor 20 and processing unit 30, wherein, electrocardio sensor 20 includes two electrocardio electrodes that are used for contacting with the human body and acquire electrocardiogram signal at least, pulse wave sensor 10 is located the same measuring position with an electrode at least, measure the pulse wave signal and the electrocardiogram signal of human fingertip, wrist, upper arm and/or ear simultaneously, pulse wave sensor 10 and electrocardio sensor 20 link to each other with processing unit 30 electrical property, pulse wave sensor 10 transmits the pulse wave signal that detects to processing unit 30, electrocardiogram signal that electrocardio sensor 20 will detect transmits to processing unit 30, processing unit 30 carries out the calculation of blood pressure according to pulse wave signal and electrocardiogram signal.
In this embodiment, the pulse wave signal is information related to the pulse intensity and frequency, and a heart rate signal can be calculated according to the pulse wave signal. The pulse wave sensor 10 may be a photoelectric volume pulse wave sensor, and obtains a photoplethysmography (PPG) signal reflecting arterial contraction, that is, a pulse wave signal through a photoplethysmography when blood pressure measurement is performed.
The pulse wave sensor can also be a piezoelectric pulse wave sensor, and the pressure change conditions of the finger tips, the radial artery and other positions are measured through the piezoelectric pulse wave sensor, namely pulse wave signals generated by artery contraction are more consistent with waveforms sensed by fingers in pulse taking in traditional Chinese medicine.
FIG. 4 is a schematic diagram of signal processing when the pulse wave sensor in FIG. 1 is a piezoelectric pulse wave sensor. As shown in fig. 4, when the pulse wave sensor is a piezoelectric pulse wave sensor, the piezoelectric pulse wave sensor converts the vibration signal of the pulse of the person into an electrical charge signal and converts the electrical charge into a very weak voltage signal, and at this time, the voltage signal is amplified by a voltage amplifier to meet the voltage requirement required by the a/D conversion, and the pulse wave signal corresponding to the voltage signal can be obtained by the a/D conversion. The piezoelectric pulse wave sensor may be an SC073 pressure sensor, a flexible film piezoelectric sensor based on a MEAS film material, or the like, and a typical amplifier is OPA4350 or the like. The electrocardiograph 20 obtains an Electrocardiogram (ECG) signal, which is an electrocardiograph signal, which is information related to the strength and frequency of heart beats, from an electrocardiograph electrode 21 that is in contact with the human body. Since the ECG signal is derived from contraction of the heart chamber and the peak of the Pulse wave signal is caused by contraction of the artery, as shown in fig. 3, the peak on the ECG waveform diagram and the Pulse wave signal waveform diagram appears with a signal delay, i.e., Pulse Transit Time (PTT), on the same Time axis, which reflects the Transit Time of the blood from the heart to the measurement site of the Pulse wave sensor 10. Because the transfer speed of the pulse wave is directly related to the blood pressure, when the blood pressure is high, the pulse wave transfer is fast, otherwise, the pulse wave transfer is slow, therefore, the pulse transfer speed can be obtained through the electrocardiogram ECG signal and the PTT of the pulse wave transfer time, in addition, the conventional human physiological parameters (such as height, weight and the like), the systolic pressure and the diastolic pressure of the human pulse are estimated through the established characteristic equation, the noninvasive continuous blood pressure measurement can be realized, wherein the calculation formula of the systolic pressure and the diastolic pressure is as follows:
wherein: SBP0Systolic pressure at the initial time;
SBPisystolic pressure at the ith heart beat time
DBP0Diastolic pressure at the initial time;
DBPidiastolic pressure at the ith cardiac moment;
MBP0the mean value of the blood pressure at the initial moment;
PIR0the intensity coefficient is the initial moment of the PPG signal;
PIRithe intensity coefficient is the intensity coefficient of the PPG signal at the ith heart beat time;
PTT0pulse propagation time at an initial time;
PTTipulse propagation time at an initial time;
wherein, PTT0、PIR0、MBP0、DBP0、SBP0The values at the initial moments are related to the physiological parameters of the human body, and can adopt uniform default values, or can be obtained according to the physiological parameters of the human body of each individual and a corresponding table of the physiological parameters of the human body and various numerical values stored in the processing unit 30 in advance, so that higher precision can be achieved according to the physiological information of the human body. In some embodiments, the above values at the initial moments can also be obtained through actual calibration, and the specific calibration method is that the user wears the integrated sensor described in the present invention to collect PPG signals and ecg signals, and simultaneously uses another blood pressure signal collecting device to synchronously collect blood pressure signals of the human body. PTT, PIR and MBP measured by the time interval integrated sensor are PTT0、PIR0、MBP0The DBP and SBP measured by another blood pressure signal acquisition equipment are the DBP0、SBP0. Thus, a more accurate PTT can be obtained0、PIR0、MBP0、DBP0、SBP0。
The utility model discloses in, all can set up one or more pulse wave sensor on each electrocardioelectrode. The pulse wave sensor 10 and the electrocardio sensor 20 are arranged at the same testing position and are connected into the same processor, so that in a certain period, the time interval between the pulse wave signal peak value and the electrocardiogram signal ECG signal peak value is the pulse propagation time PTT, the pulse wave signal and the ECG signal can be completely synchronized on the signal acquisition time without independently synchronizing, and the PTT signal can be accurately measured.
Fig. 5 is a schematic diagram of the blood pressure measuring device in fig. 1 when performing filtering processing, as shown in fig. 5, in the utility model, the pulse wave sensor and the measurement position of the electrocardio-sensor overlap, because the electrocardio-electrode and the pulse wave sensor detect at the same position and have the same contact interface, the electrocardio-signal and the pulse wave signal can be overlapped with similar motion noise, the motion noise includes noise generated during motion and noise generated by unstable contact, and through extracting the similar signal in the pulse wave and the electrocardiogram signal, as the motion noise, the motion noise can be subtracted from the original signal, and the motion noise interference of the signal is eliminated.
More specifically, the adaptive filter is used to process the motion noise of the electrocardiogram signal and the pulse wave signal. The original electrocardiogram signal is used as a signal source s (k), the original pulse wave signal is used as a noise reference n (k), and a first noise signal d (k) contained in the original electrocardiogram signal can be separated. Using adaptive filter techniques to find a set of parameters h (k) such that the first error e (k) is(s) (k) h (k) -n (k)2When the signal is the noise signal, d (k) is the electrocardiogram signal o (k) ═ s (k) -d (k) after the noise is removed. Similarly, the original pulse wave signal is used as the signal source s ' (k), and the original electrocardiogram signal is used as the noise reference signal n ' (k), so that the second noise signal d ' (k) contained in the original pulse wave signal can be separated. Finding a set of parameters h ' (k) using an adaptive filter technique such that the second error e ' (k) ═ s ' (k) × h ' (k) -n ' (k)2When the minimum value is d ' (k), the pulse wave signal o ' (k) is the noise signal, and the pulse wave signal o ' (k) after the noise removal is s ' (k) -d ' (k). In this embodiment, the first noise signal d (k) and the second noise signal d' (k) are similar signals.
In order to overlap the measurement positions of the electrocardiograph electrode and the pulse wave sensor to simultaneously measure the electrocardiograph signal and the pulse wave signal, in the present embodiment, the pulse wave sensor 10 is integrated to the electrocardiograph electrode 21 of the electrocardiograph sensor 20.
Further, in the present embodiment, the pulse wave sensor and the at least one electrocardiograph electrode are located at the same measurement position. Wherein, a gap is formed in the middle of the electrode surface of the electrocardio-electrode 21, and the pulse wave sensor 10 is integrated in the middle of the electrocardio-electrode 21 and is exposed on the surface of the electrocardio-electrode 21 used for contacting with the part to be measured. The pulse wave sensor 10 may be flush with the surface of the electrocardio-electrode 21, or the pulse wave sensor 10 may be recessed in the plane of the electrocardio-electrode 21. In the structure, the two sensors are combined into one sensor, so that the contact area of the blood pressure measuring device and a human body can be reduced as much as possible during measurement, and the blood pressure measuring device is convenient to wear.
Fig. 6 shows the utility model provides a blood pressure measuring device's that the second embodiment provides a cross-sectional structure schematic diagram, as shown in fig. 6, the utility model discloses the blood pressure measuring device that the second implementation example provided is the same basically with first embodiment, and its difference lies in, in this embodiment, electrocardio electrode 21 is the cambered surface with the electrode surface of waiting to detect the position contact, the cambered surface suits with the shape of waiting to detect the position, and is concrete, and it is the finger when waiting to detect the position, the cambered surface with the shape of the finger abdomen portion of finger suits, makes the finger laminate with electrocardio electrode 21 face more.
Further, the blood pressure measuring device further comprises an electrode substrate 22, the electrocardio-electrode 21 is supported on the electrode substrate 22, a supporting surface of the electrode substrate 22 for supporting the electrocardio-electrode 21 is also an arc surface so as to be attached to the electrocardio-electrode 21, and the height of the electrode substrate 22 is continuously reduced from one end of the electrode substrate 22 to the other end of the electrode substrate 22, namely, when the electrocardio-electrode 21 is arranged on the electrode substrate 22, the electrocardio-electrode is arranged in an inclined manner so as to be more in line with the shape of the contact part of the human body. The pulse wave sensor 10 is arranged in the middle of the cambered surface type electrocardio-electrode 21, and the pulse wave sensor 10 is slightly lower than the surface of the electrocardio-electrode and is tangent to the cambered surface. When a finger presses the blood pressure sensor, the position of the pulse wave sensor 10 may correspond to the middle of the finger abdomen.
Fig. 7 is a schematic view of the front view structure of the blood pressure measuring device in fig. 6 when the blood pressure measuring device is disposed on the smart watch, as shown in fig. 7, when the blood pressure measuring device provided in this embodiment is disposed on the smart watch, the higher end of the electrode base 22 is located at the center of the smart watch dial 90, and the lower end of the electrode base 22 is located at the edge of the smart watch dial 90, that is, the height of the electrode base 22 gradually decreases from the center of the dial 90 to the edge of the dial 90.
Fig. 8 is a schematic view showing a top view structure of a blood pressure measuring device according to a third embodiment of the present invention, as shown in fig. 8, the structure of the blood pressure measuring device according to the third embodiment of the present invention is substantially the same as that of the first and second embodiments, but the difference is that, in this embodiment, a notch is formed on the edge of the electrocardio-electrode 21, and the pulse wave sensor 10 is disposed in the notch.
Fig. 9 is a schematic top view of a blood pressure measuring device according to a fourth embodiment of the present invention. As shown in fig. 9, in the fourth embodiment of the present invention, the pulse wave sensor 10 is provided side by side with the electrocardiograph electrode 21. With continuing reference to fig. 1, 8 and 9, in the three embodiments, although the position of the pulse wave sensor 10 on the electrocardio-electrode 21 is different, the pulse wave sensor 10 is integrated with the electrocardio-electrode 21, and the pulse wave sensor 10 is exposed on the surface of the electrocardio-electrode 21 for contacting with the human body to directly contact with the part to be measured.
Fig. 10 is a schematic sectional structural view of a blood pressure measuring device according to a fifth embodiment of the present invention, fig. 11 is a system block diagram of the blood pressure measuring device provided in fig. 10, fig. 12 is a logic control diagram of the blood pressure measuring device provided in fig. 10, as shown in fig. 10 to 12, in a fifth embodiment of the present invention, the structure of the blood pressure measuring device is substantially the same as that of the above embodiments, except that the blood pressure measuring device further includes a contact pressure detector 50, the contact pressure detector 50 is disposed inside the electrocardiograph sensor 20, the inside of the electrocardiograph sensor is a side away from a contact surface for contacting a part to be detected, detects a real-time pressure on the electrocardiograph sensor 20 and transmits the real-time pressure information to the processing unit 30, the processing unit 30 determines whether the real-time pressure on the electrocardiograph sensor 20 is greater than a lowest pressure threshold value, and is smaller than the highest pressure threshold, if the real-time pressure is greater than the lowest pressure threshold and smaller than the highest pressure threshold, it indicates that the pressure on the electrocardiograph sensor 20 is within a suitable range, and the processing unit 30 starts to measure the blood pressure.
In this embodiment, because too big can obstruct the flow of blood of pressure, the undersize can cause that the ECG signal is weak or the PPG signal receives ambient light interference, through the setting of contact pressure detector 50, can make real-time pressure as the trigger condition that starts measuring, is greater than setting for the lowest pressure threshold value when detecting real-time pressure, and is less than the highest pressure threshold value, opens blood pressure measurement device, measures the more accurate pressure signal of measurement that makes blood pressure to blood pressure.
Further, in the initial state, the pulse wave sensor 10 and the electrocardiograph sensor 20 are in the sleep state, and the processing unit 30 may further determine whether the real-time pressure is greater than the wake-up pressure threshold, and when the real-time pressure is greater than the wake-up pressure threshold, it indicates that the portion to be measured has come into contact with the electrocardiograph electrode 21, and the processing unit 30 wakes up the pulse wave sensor 10 and the electrocardiograph sensor 20 to start measuring the blood pressure.
In this embodiment, the blood pressure measuring device further includes a prompt module 60, the prompt module 60 is electrically connected to the processing unit 30, the prompt module 60 prompts the user that the contact pressure is too small when the real-time pressure is lower than the minimum pressure threshold, and prompts the user that the contact pressure is too large when the implementation pressure is higher than the maximum pressure threshold, so as to prompt the contact pressure between the portion to be measured and the electrocardio-electrode 21, so that the user can adjust the contact pressure. In particular, the prompting module 60 may be a display screen or an audible and visual prompting device.
The contact pressure detector 50 may be an RFP pressure sensor, an FSR402 membrane pressure sensor, or the like.
Further, the pulse wave sensor 10 may be a piezoelectric pulse wave sensor that measures a pressure change at a finger tip, a radial artery, or the like to directly obtain a pulse wave signal reflecting arterial contraction, thereby calculating blood pressure. Unlike the photoelectric volume pulse wave sensor, the piezoelectric pulse wave sensor can omit the special piezoelectric sensor for collecting the reference noise. Meanwhile, the judgment of the pressure conformity degree can also be directly carried out on the basis of the pressure signal collected by the piezoelectric pulse wave sensor, and the contact pressure detector 50 is not additionally arranged.
Fig. 13 is a schematic view showing a cross-sectional structure of a blood pressure measuring device according to a sixth embodiment of the present invention, as shown in fig. 13, the blood pressure measuring device according to the sixth embodiment of the present invention is basically the same as the second embodiment, the electrode surface of the electrocardiograph electrode 21 is also a curved surface, and the contact pressure detector 50 is the same as the electrocardiograph electrode 21 in shape and is disposed between the electrode base 22 and the electrocardiograph electrode 21.
Fig. 14 shows the cross-sectional structure diagram of the blood pressure measuring device provided by the seventh embodiment of the present invention, as shown in fig. 14, the utility model discloses the blood pressure measuring device provided by the seventh embodiment is basically the same as the above-mentioned embodiment, and its difference lies in, in this embodiment, pulse wave sensor 10 is photoelectric type volume pulse wave sensor, and its area is less than the finger far away and indicates the abdomen area, and electrocardio-electrode 21 sets up on photoelectric type volume pulse wave sensor 10, and electrocardio-electrode 21 can see through the light that photoelectric type volume pulse wave sensor sent and the light that human body reflected at least partially. Preferably, the electrocardio-electrode 21 is a transparent electrode, and the photoelectric volume pulse wave sensor is arranged on one side of the electrocardio-electrode 21 away from a contact surface for contacting with the part to be detected.
Fig. 15 is a schematic view showing a cross-sectional structure of a blood pressure measuring device according to an eighth embodiment of the present invention, as shown in fig. 15, the blood pressure measuring device according to the eighth embodiment of the present invention is substantially the same as the above-mentioned embodiments, and the difference is that the electrode surface of the electrocardiograph electrode 21 is a curved surface, a groove is provided in the electrode base 22, and the pulse wave sensor 10 is located on one side of the electrocardiograph electrode 21 facing the electrode base 22 and is located in the groove of the electrode base 22.
Further, the area of the non-pulse wave sensor 10 on the transparent electrocardio-electrode 21 is coated with a black light shielding layer, that is, only the electrocardio-electrode 21 is transparent relative to the pulse wave sensor 10, which can prevent the interference of the reflected light and make the measurement more accurate.
Fig. 16 is a schematic view showing a blood pressure measuring device according to a ninth embodiment of the present invention, as shown in fig. 16, the blood pressure measuring device according to the ninth embodiment of the present invention is substantially the same as the eighth embodiment, and the difference is that, in this embodiment, a gap is formed on the supporting surface of the lower surface of the electrocardiograph electrode 21 and the electrode base 22 supporting the electrocardiograph electrode 21, and the pulse wave sensor 10 is disposed in the gap to reduce the distance between the pulse wave sensor 10 and the human body.
Fig. 17 is a schematic view showing a cross-sectional structure of a blood pressure measuring device according to a tenth embodiment of the present invention, as shown in fig. 17, the blood pressure measuring device according to the tenth embodiment of the present invention is substantially the same as the blood pressure measuring device according to the ninth embodiment, and the difference is that, in this embodiment, the pulse wave sensor 10 is not only disposed on the lower surface of the electrocardio-electrode 21, but also the non-pulse wave sensor 10 area on the lower surface of the electrocardio-electrode 21 is provided with a contact pressure detector 50 to detect the pressure applied to the electrocardio-electrode 21. An insulating layer (not shown) is further provided around the pulse wave sensor 10 to prevent signals between the contact pressure detector 50 and the pulse wave sensor 10 from interfering with each other.
Fig. 18 is a schematic view of a cross-sectional structure of a blood pressure measuring device according to an eleventh embodiment of the present invention, which is substantially the same as the above embodiments, and the difference is that the electrocardiograph electrode 21 and the contact pressure detector 50 are both arc surfaces and are disposed on the electrode support frame, and the pulse wave sensor 10 is disposed at the middle of the support surface of the electrode support frame.
In summary, in the present invention, the pulse wave sensor 10 is integrated on the electrocardiograph electrode 21 of the electrocardiograph sensor 20, so that the pulse wave signal and the ECG signal are completely synchronized in time, and the PTT signal is accurately measured. Meanwhile, the structure can reduce the contact area of the blood pressure measuring device and the human body as much as possible during measurement. To better measure blood pressure. Further, by providing the contact pressure detector 50, it is possible to prevent interference due to the contact pressure as much as possible and to measure the blood pressure more accurately.
The utility model also provides an intelligent watch, this intelligent watch include foretell blood pressure measuring device, about other technical characteristics of this intelligent watch, please see prior art, no longer give details here.
Further, the electrocardioelectrode 21 of the blood pressure measuring device can be arc-shaped and is arranged on the electrode substrate 22, the electrode substrate 22 is arranged on the dial plate 90 of the intelligent watch, and the height of the electrode substrate 22 is continuously reduced from one side of the intelligent watch close to the middle of the dial plate 90 to one side of the edge of the dial plate 90, so that the electrocardioelectrode is gradually inclined downwards.
The electrocardio-electrode comprises a first electrocardio-electrode and is arranged on the back of the watch dial; and the second electrocardio electrode is arranged on the front surface of the watch dial close to the edge of the watch dial or the side surface of the watch dial.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent changes without departing from the technical scope of the present invention.
Claims (17)
1. A blood pressure measuring device characterized in that: comprises a pulse wave sensor, an electrocardio sensor and a processing unit,
the electrocardio-sensor comprises at least two electrocardio-electrodes which are used for contacting with a human body to obtain electrocardiogram signals,
the pulse wave sensor and at least one electrocardio-electrode are positioned at the same measuring position,
the pulse wave sensor and the electrocardio sensor are both electrically connected with the processing unit,
the pulse wave sensor transmits the detected pulse wave signals to the processing unit, the electrocardio sensor transmits the detected electrocardiogram signals to the processing unit,
the processing unit calculates the blood pressure according to the pulse wave signal and the electrocardiogram signal.
2. A blood pressure measuring device according to claim 1, wherein: the pulse wave sensor is a photoelectric volume pulse wave sensor and/or a pressure pulse wave sensor.
3. A blood pressure measuring device according to claim 1, wherein: the measuring position is a fingertip, a wrist, an upper arm or an ear.
4. A blood pressure measuring device according to claim 1, wherein: the pulse wave sensor is exposed on the surface of the electrocardio-electrode, which is used for contacting with the part to be measured.
5. A blood pressure measuring device according to claim 4, wherein: the pulse wave sensor is arranged in the middle of the electrocardio-electrode, or in a gap on the side of the electrocardio-electrode, or is arranged side by side with the electrocardio-electrode.
6. A blood pressure measuring device according to claim 1, wherein: the pulse wave sensor is arranged below the electrocardio-electrode and is far away from one side of the electrode surface of the electrocardio-electrode, which is used for contacting with the part to be measured.
7. A blood pressure measuring device according to claim 6, wherein: the pulse wave sensor comprises a photoelectric volume pulse wave sensor, and the electrocardio-electrode can at least partially transmit light emitted by a light source of the photoelectric pulse wave sensor and light reflected by a human body.
8. A blood pressure measuring device according to claim 7, wherein: the electrocardio-electrode is a transparent electrode.
9. A blood pressure measuring device according to claim 1, wherein: the electrode surface of the electrocardio-electrode, which is used for contacting with the part to be measured, is a cambered surface.
10. A blood pressure measuring device according to claim 9, wherein: the blood pressure measuring device further comprises an electrode substrate, and the electrocardio-electrode is arranged on the electrode substrate.
11. A blood pressure measuring device according to claim 10, wherein: the electrode substrate is provided with an arc surface, and the arc surface of the electrode substrate is adapted to the arc surface of the electrocardio-electrode.
12. A blood pressure measuring device according to any one of claims 1 to 11, wherein: the blood pressure measuring device further comprises a contact pressure detector,
the contact pressure detector is arranged on one side of the electrocardio-electrode away from a contact surface used for contacting with a part to be detected,
the contact pressure detector detects the real-time pressure on the electrocardio sensor and transmits the real-time pressure signal to the processing unit,
and the processing unit wakes up the pulse wave sensor to measure the blood pressure according to the real-time pressure signal.
13. A blood pressure measuring device according to claim 12, wherein: the contact pressure detector is a pressure type pulse wave sensor.
14. A blood pressure measuring device according to claim 12, wherein: the blood pressure measuring device further comprises a prompting module, the processing unit is electrically connected with the prompting module, and when the real-time pressure is smaller than a lowest pressure threshold value or larger than a highest pressure threshold value, the processing unit controls the prompting module to prompt the contact pressure between the part to be detected and the electrocardio electrode.
15. A smart watch, characterized by: comprising a blood pressure measuring device according to any one of claims 1 to 14.
16. The smart watch of claim 15, wherein: the electrocardio sensor comprises a first electrocardio electrode and a second electrocardio electrode, and the first electrocardio electrode is arranged on the back of the watch dial; the second electrocardio electrode is arranged on the front surface of the watch dial or the side surface of the watch dial.
17. The smart watch of claim 16, wherein: the blood pressure measuring device further comprises an electrode substrate, the second electrocardio electrode is arranged on the electrode substrate, the electrode substrate is arranged on the dial plate of the intelligent watch, and the height of the electrode substrate is reduced from one side close to the middle of the dial plate to one side of the edge of the dial plate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116350197A (en) * | 2023-02-18 | 2023-06-30 | 佳禾智能科技股份有限公司 | Implementation method of intelligent watch for improving heart rate monitoring accuracy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116350197A (en) * | 2023-02-18 | 2023-06-30 | 佳禾智能科技股份有限公司 | Implementation method of intelligent watch for improving heart rate monitoring accuracy |
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