A method for testing the accuracy of heart rate and breathing monitoring equipment

Abstract

The present invention provides a method for testing the accuracy of a heart rate and breathing monitoring device, comprising: obtaining a preset frequency range, step time interval, and frequency step amount of a pressure signal, the pressure signal including respiratory pressure and heartbeat pressure; generating a respiratory pressure and heartbeat pressure combination test scheme according to the frequency range, step time interval, frequency step amount, and preset proportional relationship; generating a pressure signal starting from the lowest value of the frequency range, and maintaining the preset proportional relationship between the frequency of the respiratory pressure and the frequency of the heartbeat pressure, and increasing the frequency of the pressure signal at the step time interval according to the frequency step amount until the frequency of the pressure signal reaches the highest value of the frequency range. The present invention overcomes the difficulty that the real person measurement method cannot achieve an extreme respiratory frequency and heartbeat frequency combination, and more scientifically and accurately evaluates the accuracy of such monitoring equipment within the claimed monitoring range.

Description

Technical Field

[0001] The invention belongs to the technical field of human physiological monitoring, and in particular relates to a method for testing the accuracy of heart rate and respiration monitoring equipment. Background Art

[0002] With the increasing emphasis on life and health, people are eager to know their physical condition at any time. The endless stream of heart rate and respiratory monitoring devices on the market can achieve the purpose of monitoring vital signs such as heart rate and respiratory rate, such as the common smart mattress. In terms of working principle, unlike non-contact sleep monitoring devices that use bio-radar monitoring technology and snoring-based monitoring technology, heart rate and respiratory monitoring devices that use high-precision pressure sensor technology need to directly or indirectly contact the human body to achieve the monitoring function. This type of equipment senses the tiny vibration signals of the human body through high-precision pressure sensors, and then converts them into electrical signals, and then processes, analyzes and calculates the electrical signals to finally present monitoring data such as the human heart rate and respiratory rate. Whether in the medical field or in daily life, the accuracy and response speed of monitoring data are important indicators for heart rate and respiratory monitoring equipment.

[0003] Since this type of equipment achieves the purpose of monitoring by sensing the physical vibration of the human body, it cannot be simulated through light or electrical signals like other monitoring devices based on the same principle, and this type of technology has been applied to medical monitoring for a short time. Therefore, many manufacturers use real-person measurement methods, that is, the tester enters a sleeping state, and uses the heart rate and respiratory monitoring equipment to monitor it synchronously with the professional monitor commonly used in hospitals, and compares the data of the professional monitor with the heart rate and respiratory monitoring equipment. However, this method has obvious defects. The heart rate and respiratory rate of the tester are unstable, and the update frequency of the professional monitor and the tested monitoring equipment is not uniform, resulting in poor synchronization of the instantaneous test data; secondly, the heart rate and respiratory rate of the human body are difficult to reach the boundary value of the heart rate and respiratory monitoring equipment, which makes the boundary value test difficult or even impossible to test. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method for testing the accuracy of a heart rate and respiration monitoring device to solve the above-mentioned technical problems.

[0005] The present invention provides a method for testing the accuracy of a heart rate and respiration monitoring device, comprising:

[0006] Obtaining a preset frequency range, stepping time interval, and frequency stepping amount of a pressure signal, wherein the pressure signal includes respiratory pressure and cardiac pressure, wherein the frequency stepping amount of the respiratory pressure and the frequency stepping amount of the cardiac pressure have a preset proportional relationship;

[0007] Generate a combined test scheme of respiratory pressure and heartbeat pressure according to the frequency occurrence range, step time interval, frequency step amount and preset proportional relationship;

[0008] According to the combined test scheme of respiratory pressure and cardiac pressure, the pressure signal is generated from the lowest value of the frequency occurrence range, and the frequency of the respiratory pressure and the frequency of the cardiac pressure are maintained at the preset proportional relationship, and the frequency of the pressure signal is increased at the step time interval according to the frequency step amount until the frequency of the pressure signal reaches the highest value of the frequency occurrence range;

[0009] The pressure signal is monitored. After determining that the pressure signal is stable, the measured heart rate and breathing monitoring device monitors the pressure signal and tests the monitoring data generated by the measured heart rate and breathing monitoring device.

[0010] Furthermore, it also includes:

[0011] By collecting the heart rate and breathing rate of different groups of people and inputting them into the test database;

[0012] The heart rate and respiratory rate of the test database are counted to determine the frequency range of heart rate pressure and respiratory pressure and the statistical ratio between the frequency of respiratory pressure and the frequency of heart rate pressure, and the statistical ratio is used as the preset proportional relationship.

[0013] Furthermore, it also includes:

[0014] Conventional values ​​of the preset frequency step amount and step time interval in the combined test scheme of respiratory pressure and cardiac pressure;

[0015] Obtaining test requirements, wherein the test requirements include testing the response speed and accuracy of the heart rate and respiratory monitoring device;

[0016] Determine the frequency step amount and step time interval according to the test requirements;

[0017] When the test requirement is a reaction speed, reducing the step time interval;

[0018] When the test requirement is accuracy, the frequency step amount is reduced.

[0019] Furthermore, the monitoring pressure signal, after determining that the pressure signal is stable, collects monitoring data of the measured heart rate and breathing monitoring device, including: obtaining the pressure waveform of the pressure signal applied to the measured heart rate and breathing monitoring device through a high-precision pressure sensor, performing image analysis on the pressure waveform, for the breathing signal, within the same step time interval, if the error between the frequency and amplitude of adjacent pressure waveforms does not exceed the first error threshold, and the error in the maximum amplitude of each sine wave of the pressure waveform does not exceed the second error threshold, and the interval frequency between each sine wave does not exceed the third error threshold, then it is determined that the pressure waveform of the breathing signal has reached a stable state; for the heartbeat signal, if the error between the frequencies of adjacent pressure waveforms does not exceed the fourth error threshold, then it can be determined that the pressure waveform of the heartbeat signal has reached a stable state.

[0020] Furthermore, the monitoring data generated by the measured heart rate and breathing monitoring device is tested, including:

[0021] After the pressure waveform of the pressure signal applied to the measured heart rate and breathing monitoring device reaches a stable state, the monitoring data of the heart rate and breathing monitoring device is recorded;

[0022] The frequency of the pressure waveform applied by the heart rate and respiration monitoring device is compared with the monitoring data of the heart rate and respiration monitoring device, and the error is calculated.

[0023] Furthermore, it also includes: using a simulated doll to generate the pressure signal, ensuring that the simulated doll is in good contact with the measured heart rate and breathing monitoring device during the test; if the pressure felt by the high-precision pressure sensor exceeds a preset threshold pressure, it means that the simulated doll and the measured heart rate and breathing monitoring device are in good contact, otherwise, the position of the simulated doll and the measured heart rate and breathing monitoring device is readjusted.

[0024] Furthermore, it also includes:

[0025] The frequency test value of the heartbeat pressure and the frequency test value of the respiratory pressure signal are manually set according to a preset proportional relationship to generate a pressure signal with a fixed frequency.

[0026] Furthermore, the pressure waveform of the generated respiratory pressure is an approximate sine wave with constant frequency and amplitude, and the pressure waveform of the generated cardiac pressure is a sine wave or a pulse wave with constant frequency.

[0027] The present invention provides a method for testing the accuracy of a heart rate and respiration monitoring device, and proposes a test method for testing the accuracy of a heart rate and respiration monitoring device using high-precision pressure sensor technology. Standard frequency respiration pressure and heartbeat pressure are applied to the heart rate and respiration monitoring device, and the pressure waveform is monitored in real time. At the same time, the monitoring data of the heart rate and respiration monitoring device is collected to test the accuracy and timeliness of the smart wearable device.

[0028] The beneficial effects of the present invention are that it can simulate actual clinical use, fundamentally solve the test problems of real-person measurement methods such as unstable test sources and inability to test extreme boundary points, and fill in the gaps in test methods; according to the proportional relationship between respiratory rate and heart rate, it can more scientifically and accurately evaluate the accuracy of such monitoring equipment within the claimed monitoring range. In addition, the design principle of the present invention is reliable, the structure is simple, and it has a very broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 is a schematic flow chart of a method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] The present application provides a method for testing the accuracy of a heart rate and breathing monitoring device, including:

[0033] Obtaining a preset frequency range, stepping time interval, and frequency stepping amount of a pressure signal, wherein the pressure signal includes respiratory pressure and cardiac pressure, wherein the frequency stepping amount of the respiratory pressure and the frequency stepping amount of the cardiac pressure have a preset proportional relationship;

[0034] Generate a combined test scheme of respiratory pressure and heartbeat pressure according to the frequency occurrence range, step time interval, frequency step amount and preset proportional relationship;

[0035] According to the combined test scheme of respiratory pressure and cardiac pressure, the pressure signal is generated from the lowest value of the frequency occurrence range, and the frequency of the respiratory pressure and the frequency of the cardiac pressure are maintained at the preset proportional relationship, and the frequency of the pressure signal is increased at the step time interval according to the frequency step amount until the frequency of the pressure signal reaches the highest value of the frequency occurrence range;

[0036] Monitor the pressure signal, and after determining that the pressure signal is stable, collect the monitoring data generated by the heart rate and breathing monitoring device.

[0037] By simulating the pressure of breathing and heartbeat, a stable frequency of breathing pressure waveform and heartbeat pressure waveform is generated, replacing the traditional real-person test method, improving the accuracy of the test results while improving the detection efficiency. It overcomes the difficulty of real-person measurement methods that cannot achieve extreme breathing and heartbeat frequencies, fills the gap in the existing test range, and more scientifically and accurately evaluates the accuracy of such monitoring equipment within the claimed monitoring range.

[0038] Normally, an adult breathes about 12-20 times per minute, that is, once every 3-5 seconds: the ratio of breathing to heartbeat frequency is 1:4, that is, for every breath, the heart beats 4 times. Based on the above-mentioned human body laws, heart rate and respiratory monitoring equipment on the market will take shortcuts and directly calculate based on the ratio, and what is displayed is not the user's real data. The present application takes into account the proportional relationship between the frequencies of breathing and heartbeat, and the frequency ratio and frequency step ratio of the two are the same. During the test, the frequency of the breathing pressure and the frequency of the heartbeat pressure are maintained at the preset proportional relationship to avoid the influence of the two pressures changing arbitrarily, which is more in line with the natural laws of actual breathing and heartbeat.

[0039] The breathing frequency of adults is generally 12-20 times / minute, and the normal pulse frequency is 60-100 times / minute; the frequency range of respiratory pressure is 12-20 times / minute; the frequency range of heartbeat pressure is 60-100 times / minute; the minimum value of respiratory pressure frequency is 12 times / minute; the minimum value of heartbeat pressure frequency is 60 times / minute; select the lowest value of respiratory pressure frequency to generate respiratory pressure, then the corresponding heartbeat pressure frequency is: 12×4=48 times / minute, this is the first test, the step time interval is set to 5 minutes, and the second test is performed 5 minutes later. The frequency step amount of respiratory pressure is set to 2 times / minute, then according to the ratio of 1:4, the frequency step amount of heartbeat pressure is set to 8 times / minute, the second test is for respiratory pressure frequency of 14 times / minute, heartbeat pressure frequency of 56 times / minute, you can also select the lowest value of heartbeat pressure frequency to generate heartbeat pressure, then the corresponding respiratory pressure frequency is: 60÷4=15 times / minute.

[0040] Optionally, as an embodiment of the present invention, it also includes: collecting heart rate and respiratory rate of different group types and inputting them into a test database; statistically analyzing the heart rate and respiratory rate of the test database to determine the frequency occurrence range of heart pressure and respiratory pressure and the statistical ratio between the frequency of respiratory pressure and the frequency of heart pressure, and using the statistical ratio as the preset proportional relationship.

[0041] The heart rate and breathing rate of different groups have certain rules. Considering different groups, we can test whether the applicable population of the heart rate and breathing monitoring equipment is correct. For example, the heart rate of a normal person is 60-100 beats per minute, and the basic heart rate of an athlete is slow, generally 50 beats per minute. If the heart rate and breathing monitoring equipment claims to be applicable to athletes, the heart rate and breathing rate of athletes can be directly retrieved from the test database during the test, and targeted tests can be conducted. In addition, group types can be divided according to age, including: childhood, adulthood, and old age; for example, the ratio of breathing to heart rate for adults is 1:4.

[0042] Optionally, as an embodiment of the present invention, it also includes: presetting regular values ​​of frequency step amount and step time interval in the respiratory pressure and cardiac pressure combination test scheme; obtaining test requirements, the test requirements including testing the reaction speed and accuracy of the heart rate and respiratory monitoring equipment; determining the frequency step amount and step time interval according to the test requirements; when the test requirement is reaction speed, reducing the step time interval; when the test requirement is accuracy, reducing the frequency step amount.

[0043] The performance of the heart rate and respiratory monitoring equipment includes two aspects: reaction speed and accuracy. Due to the data processing process, the equipment will inevitably have a delay in the output of the monitoring results, but good data analysis and processing speed can achieve no delay to the naked eye. In the case where the test requirement is reaction speed, the step time interval is reduced, and the frequency step amount is increased or unchanged. The increase in frequency step amount can better reflect the effect of reaction speed; in the case where the test requirement is accuracy, the frequency step amount is reduced, and the step time interval is unchanged or increased. Although some devices have slow reaction speeds, they have high accuracy. The increase in the step time interval can avoid affecting the judgment result due to the slow reaction speed of the device. The embodiments of the present application provide different test requirements, and targeted testing can be carried out according to the effects claimed by the heart rate and respiratory monitoring equipment.

[0044] Optionally, as an embodiment of the present invention, the monitoring of the pressure signal, after determining that the pressure signal is stable, collects monitoring data of the heart rate and respiration monitoring device, including: obtaining the pressure waveform of the pressure signal applied to the measured heart rate and respiration monitoring device through a high-precision pressure sensor, performing image analysis on the pressure waveform, for the respiratory signal, within the same step time interval, if the error of the frequency and amplitude of adjacent pressure waveforms does not exceed the first error threshold, and the error of the maximum amplitude of each sine wave of the pressure waveform does not exceed the second error threshold, and the interval frequency between each sine wave does not exceed the third error threshold, then it is determined that the pressure waveform of the respiratory signal has reached a stable state; for the heartbeat signal, if the error of the frequency of adjacent pressure waveforms does not exceed the fourth error threshold, then it can be determined that the pressure waveform of the heartbeat signal has reached a stable state. .

[0045] In this embodiment, testing is performed when the waveform is stable, which is conducive to ensuring the accuracy and scientificity of the test results. The smaller the error of the above waveform, the better, and the first error threshold, the second error threshold, and the first error threshold can be ±5%.

[0046] Optionally, as an embodiment of the present invention, the monitoring data generated by the measured heart rate and respiratory monitoring device is tested, including: within the same step time interval, setting a first time interval so that the first time interval is smaller than the step time interval and larger than the time of a sine wave in the waveform; counting the mean of the monitoring data within the first time interval; comparing the monitoring data with the mean, and if the error is within a preset error threshold, determining that the monitoring data has reached a stable state; after the monitoring data reaches a stable state, recording the monitoring data.

[0047] When the heart rate and respiratory monitoring device is turned on, the data detected will be unstable due to various reasons. Testing unstable data is not conducive to the fairness of the test. Within the same step time interval, the pressure signal with no frequency change occurs, and because the standard frequency pressure is generated, the data obtained must be a fixed value. Therefore, the monitoring data of the heart rate and respiratory monitoring device is recorded only after it stabilizes. If unstable monitoring data is always obtained, it means that the accuracy of the heart rate and respiratory monitoring device is extremely poor. The monitoring data includes the pressure frequency of breathing or heartbeat. The recorded monitoring data will be used as a test object for comparison with the frequency of the generated pressure signal. The smaller the difference between the two, the higher the accuracy of the heart rate and respiratory monitoring device.

[0048] Optionally, as an embodiment of the present invention, it also includes: using a simulated doll to generate the pressure signal, ensuring that the simulated doll is in good contact with the measured heart rate and breathing monitoring device during the test; if the pressure felt by the high-precision pressure sensor exceeds a preset threshold pressure, it means that the simulated doll and the measured heart rate and breathing monitoring device are in good contact, otherwise, the position of the simulated doll and the measured heart rate and breathing monitoring device is readjusted.

[0049] Optionally, as an embodiment of the present invention, it also includes: manually setting the frequency test value of the heartbeat pressure and the frequency test value of the respiratory pressure signal according to a preset proportional relationship to generate a pressure signal with a fixed frequency.

[0050] This embodiment also provides a manual test method, that is, manually setting the frequency test value. If the frequency is changed for testing, the frequency test value also needs to be manually adjusted.

[0051] Optionally, as an embodiment of the present invention, the pressure waveform of the generated respiratory pressure is an approximate sine wave with constant frequency and amplitude, and the pressure waveform of the generated cardiac pressure is a sine wave or a pulse wave with constant frequency.

[0052] To facilitate understanding of the present invention, the following is a further description of a method for testing the accuracy of a heart rate and breathing monitoring device provided by the present invention based on the principles related to human heartbeat and breathing of the present invention and the process of testing the heart rate and breathing monitoring device in the embodiment.

[0053] S1: Use a simulated doll to generate pressure simulating the heart rate and breathing rate, place the simulated doll on the upper part of the heart rate and breathing monitoring device, adjust the position to ensure that the simulated doll is in reliable contact with the heart rate and breathing monitoring device being tested, and monitor whether the two are in good contact; if the contact is good, execute S2; otherwise, continue to adjust.

[0054] In this embodiment, the method for monitoring the contact between the simulated doll and the heart rate and breathing monitoring device being measured is: a high-precision pressure sensor is set between the simulated doll and the heart rate and breathing monitoring device being measured. If the pressure felt by the high-precision pressure sensor exceeds the set threshold pressure, it means that the two are in good contact. Otherwise, it is necessary to continue to adjust the position.

[0055] S2: Monitor whether it is in the automatic test state. If it is in the automatic test state, proceed to the next step; otherwise, enter S9;

[0056] In this embodiment, there are two states, manual test and automatic test. The manual test is to switch the frequency of the pressure signal, and manually control the switching time of the frequency. The automatic test state refers to the frequency required for the test, which is not a fixed value set directly by humans. In addition, the frequency of the pressure signal is changed during the test and is carried out according to a certain rule.

[0057] S3: Obtain the respiratory pressure and cardiac pressure combined test scheme, the test scheme including: the frequency occurrence range of respiratory pressure and cardiac pressure, step time interval, frequency step amount and a preset proportional relationship between the two.

[0058] S4: according to the combined test scheme of respiratory pressure and cardiac pressure, the pressure signal is generated from the lowest value of the frequency occurrence range, and the frequency of the respiratory pressure and the frequency of the cardiac pressure are maintained in the preset proportional relationship, and the frequency of the pressure signal is increased at the step time interval according to the frequency step amount until the frequency of the pressure signal reaches the highest value of the frequency occurrence range;

[0059] In this embodiment, the generated breathing pressure waveform is an approximate sine wave with constant frequency and amplitude, and the generated heartbeat pressure waveform is a sine wave segment with a certain interval frequency, so as to ensure the stability and accuracy of the waveform generated by the test simulation doll.

[0060] S5: monitor whether the respiratory pressure waveform and the heartbeat pressure waveform are stable. If so, proceed to S6; if not, continue to wait for the waveform to be stable;

[0061] In this embodiment, the method for monitoring whether the breathing pressure waveform and the heartbeat pressure waveform are stable is: obtaining the pressure waveform through the high-precision pressure sensor between the simulated doll and the measured heart rate and breathing monitoring device; performing image analysis on the pressure waveform, for the breathing signal, within the same step time interval, if the error of the frequency and amplitude of adjacent pressure waveforms does not exceed the first error threshold, and the error of the maximum amplitude of each sine wave of the pressure waveform does not exceed the second error threshold, and the interval frequency between each sine wave does not exceed the third error threshold, then it is determined that the pressure waveform of the breathing signal has reached a stable state; for the heartbeat signal, if the error of the frequency of adjacent pressure waveforms does not exceed the fourth error threshold, then it can be determined that the pressure waveform of the heartbeat signal has reached a stable state. .

[0062] S6: Collect monitoring data from the heart rate and breathing monitoring device, and determine whether the monitoring data is stable. If so, proceed to the next step; if not, continue to collect monitoring data from the heart rate and breathing monitoring device;

[0063] The method to determine whether the monitoring data is stable is to compare the real-time monitored data with the average of the monitoring data within the most recent 1 minute. If the error is within ±1, it means that the monitoring data has reached a stable state.

[0064] S7: Calculate and analyze the monitoring data and the generated pressure signal frequency, and save the data;

[0065] S8: The frequency of the heartbeat pressure increases by the set frequency step amount to determine whether the monitored heartbeat frequency reaches the maximum value of the frequency range; the frequency of the respiratory pressure increases by the set frequency step amount to determine whether the monitored respiratory frequency reaches the maximum value of the frequency range; if either the heartbeat pressure or the respiratory pressure reaches the maximum value of its frequency range, this round of testing ends.

[0066] S9: Generate corresponding breathing frequency and breathing pressure waveforms according to the manually set breathing frequency test values ​​and heart rate test values, and display the pressure waveforms in real time.

[0067] S10: Monitor whether a manual test stop instruction is received, if so, end this round of testing; if not, continue to execute S9.

[0068] Although the present invention has been described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention or any person skilled in the art who is familiar with the present invention may easily think of changes or substitutions within the technical scope disclosed by the present invention, and shall be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A method for testing the accuracy of a heart rate and respiration monitoring device, characterized in that: include: Obtaining a preset frequency range, stepping time interval, and frequency stepping amount of a pressure signal, wherein the pressure signal includes respiratory pressure and cardiac pressure, wherein the frequency stepping amount of the respiratory pressure and the frequency stepping amount of the cardiac pressure have a preset proportional relationship; Generate a combined test scheme of respiratory pressure and heartbeat pressure according to the frequency occurrence range, step time interval, frequency step amount and preset proportional relationship; According to the combined test scheme of respiratory pressure and cardiac pressure, the pressure signal is generated from the lowest value of the frequency occurrence range, and the frequency of the respiratory pressure and the frequency of the cardiac pressure are maintained at the preset proportional relationship, and the frequency of the pressure signal is increased at the step time interval according to the frequency step amount until the frequency of the pressure signal reaches the highest value of the frequency occurrence range; monitoring the pressure signal, and after determining that the pressure signal is stable, testing the monitoring data generated by the measured heart rate and breathing monitoring device; Also includes: Conventional values ​​of the preset frequency step amount and step time interval in the combined test scheme of respiratory pressure and cardiac pressure; Obtaining test requirements, wherein the test requirements include testing the response speed and accuracy of the heart rate and respiratory monitoring device; Determine the frequency step amount and step time interval according to the test requirements; When the test requirement is a reaction speed, reducing the step time interval; When the test requirement is accuracy, the frequency step amount is reduced.

2. The heart rate and breathing monitoring device accuracy testing method according to claim 1, characterized in that: Also includes: By collecting the heart rate and breathing rate of different groups of people and inputting them into the test database; The heart rate and respiratory rate of the test database are counted to determine the frequency range of heart rate pressure and respiratory pressure and the statistical ratio between the frequency of respiratory pressure and the frequency of heart rate pressure, and the statistical ratio is used as the preset proportional relationship.

3. The heart rate and breathing monitoring device accuracy testing method according to claim 1, characterized in that: The monitoring pressure signal reads the monitoring data of the heart rate and breathing monitoring device after determining that the pressure signal is stable, including: obtaining the pressure waveform of the pressure signal applied to the measured heart rate and breathing monitoring device through a high-precision pressure sensor, performing image analysis on the pressure waveform, and for the breathing signal, within the same step time interval, if the errors in the frequencies and amplitudes of adjacent pressure waveforms do not exceed the first error threshold, and the error in the maximum amplitude of each sine wave of the pressure waveform does not exceed the second error threshold, and the interval frequency between each sine wave does not exceed the third error threshold, then it is determined that the pressure waveform of the breathing signal has reached a stable state; for the heartbeat signal, if the error in the frequencies of adjacent pressure waveforms does not exceed the fourth error threshold, then it can be determined that the pressure waveform of the heartbeat signal has reached a stable state.

4. The heart rate and breathing monitoring device accuracy testing method according to claim 1, characterized in that: The testing of the monitoring data generated by the measured heart rate and breathing monitoring device includes: After the pressure waveform of the pressure signal applied to the measured heart rate and breathing monitoring device reaches a stable state, the monitoring data of the heart rate and breathing monitoring device is recorded; The frequency of the pressure waveform applied to the heart rate and respiration monitoring device is compared with the monitoring data of the heart rate and respiration monitoring device, and the error is calculated.

5. The heart rate and breathing monitoring device accuracy testing method according to claim 3, characterized in that: Also includes: The pressure signal is generated by using a simulated doll to ensure that the simulated doll is in good contact with the heart rate and breathing monitoring device being measured during the test; if the pressure felt by the high-precision pressure sensor exceeds the preset threshold pressure, it means that the simulated doll and the heart rate and breathing monitoring device being measured are in good contact, otherwise, the position of the simulated doll and the heart rate and breathing monitoring device being measured is readjusted.

6. The accuracy testing method of the heart rate and breathing monitoring device according to claim 1, characterized in that: Also includes: The frequency test value of the heartbeat pressure and the frequency test value of the respiratory pressure signal can also be manually set according to a preset proportional relationship to generate a pressure signal with a fixed frequency.

7. The heart rate and breathing monitoring device accuracy testing method according to claim 1, characterized in that: The pressure waveform of the respiratory pressure generated is an approximate sine wave with constant frequency and amplitude, and the pressure waveform of the heartbeat pressure generated is a constant-frequency sine wave or a pulse wave.

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