CN111450369A - Newborn breathing sensing system with falling detection alarm function and sensing method - Google Patents

Abstract

The invention belongs to the technical field of medical monitoring, and discloses a newborn breathing sensing system and a sensing method with a drop detection alarm. The newborn breathing sensing system with a drop detection alarm is provided with a sound monitoring module, a parameter preset module, Central control module, sound information analysis module, first alarm module, pressure monitoring module, adjustment module, respiration monitoring module, signal amplification module, filter module, signal conversion module, respiration information analysis module, and second alarm module; The neonatal breathing sensing method for detecting and alarming includes monitoring and analyzing the neonatal volume; measuring and adjusting the pressure information of the contact part of the respirator; monitoring the breathing intensity; amplifying and filtering the breathing intensity signal; performing signal conversion; Analysis of respiratory intensity data. The present invention amplifies and filters the signal, has better monitoring effect on respiration, and more accurate detection of respirator falling off.

Description

Neonatal breathing sensing system and sensing method with shedding detection alarm

technical field

The invention belongs to the technical field of medical monitoring, and in particular relates to a newborn breathing sensing system and a sensing method with a drop-off detection alarm.

Background technique

Currently, respiratory rate is a measure of the number of breaths a person has per minute and is a key vital sign in human subjects, and spirometry is a measurement of lung capacity or lung volume in human subjects. Deterioration of respiratory function may result in a decrease or increase in these measures. Measurements outside or near the boundaries of predetermined physiological normal values are predictive indicators of deleterious and fatal ailments in human subjects. For neonates with poor vital signs, a respirator needs to be used for assisted breathing, but the existing respirator cannot accurately detect the neonatal respiration, and there is no drop-off alarm setting, which increases the care burden of medical staff.

Through the above analysis, the existing problems and defects in the existing technology are: the existing respirator cannot accurately detect the breathing condition of the newborn, and there is no setting of a fall-off alarm, which increases the care burden of medical staff.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the prior art, the present invention provides a newborn breathing sensing system and a sensing method with a drop-off detection alarm.

The present invention is realized in this way, a newborn breathing sensing method with a shedding detection alarm, and the newborn breathing sensing method with a shedding detection alarm includes:

Another object of the present invention is to provide a newborn breathing sensing method with a shedding detection alarm, the newborn breathing sensing method with a shedding detection alarm comprising the following steps:

In the first step, the volume of the newborn is monitored by the sound sensor, and the first information of the volume information of the newborn and the second information representing the time observation point of the first information are corresponding to each other. M or more third information. Time series data information, where M is a natural number above 3;

The second step is to use the second information contained in each of the N pieces of the third information contained in the time series data information obtained in the first step to calculate the absolute value of the time difference between the observation points, and calculate the absolute value of the time difference between the observation points. The set of said time differences obtained is generated as the first set, wherein N is a natural number greater than 3;

In the third step, for each group of the third information for which the absolute value of the time difference is calculated, the value indicating the first information at the first time and the predetermined time elapsed from the first time are calculated. The autocorrelation coefficient of the correlation between the values of the first information at the second time, generating the set of the calculated autocorrelation coefficients as the second set;

The fourth step, based on the first set obtained in the second step and the second set obtained in the third step, calculate an autocorrelation function representing the relationship between the set of time differences and the set of autocorrelation coefficients; Described autocorrelation function, analyzes described 1st information in time series; Output the 4th information about neonatal volume information analysis result;

In the fifth step, if the fourth information output in the fourth step exceeds the preset value, an alarm is given by an alarm device; the pressure information of the contact part of the respirator is measured by a pressure sensor;

The sixth step is to compare the pressure information of the contact part of the respirator measured by the pressure sensor obtained in the fifth step with the standard pressure information;

The seventh step, based on the comparison results, obtain the result of whether the position of the respirator needs to be adjusted; if adjustment is required, determine the key position points and mark them according to the standard position of the respirator; adjust the position of the respirator so that all The position of the respirator includes all key points;

In the eighth step, after adjusting the position of the respirator in the seventh step, the neonatal breathing intensity is monitored through the respiration monitoring program; the respiration intensity signal is amplified through the signal amplification program, and the respiration intensity signal is filtered through the filtering program;

In the ninth step, the signal filtered in the eighth step is converted by a signal conversion program; the breathing intensity data obtained by the eighth step monitoring is analyzed; if the preset value is exceeded, an alarm is issued by an alarm device.

Further, in the eighth step, the method for amplifying the breathing intensity signal is:

1) Construct the detection signal receiving matrix;

2) Perform singular value decomposition on the detection signal receiving matrix;

3) Construct the feedback signal matrix according to the singular value decomposition result;

4) Feedback and amplify the received matrix signal by using the feedback signal matrix.

Further, in step 3), the described method for constructing the feedback signal matrix according to the singular value decomposition result is:

Obtain the phase information matrix of each signal to be processed: perform singular value decomposition on the detection signal receiving matrix to obtain its generalized inverse matrix: calculate the rank of the generalized inverse matrix;

Screen the phase information matrix; remove the values smaller than the preset threshold in the phase information matrix to obtain a matrix;

Calculate the rank of the phase information matrix: calculate the ratio of the phase information of each signal to be processed; construct the phase information normalized diagonal matrix:

Determine the heavy eigenvalues of the matrix, and then calculate the standard deviation and construct the feedback scale matrix with this standard deviation.

Further, in step 4), the described method of using feedback signal matrix to feedback and amplify the received matrix signal is:

Feedback the received matrix signal according to the feedback signal matrix to obtain the matrix to be amplified; determine the signal amplification ratio; amplify the to-be-amplified matrix to obtain the amplified signal matrix for input to the multi-input and output dynamic system; perform antilogarithmic operation on the matrix, Obtain the signal matrix for input to the MIMO dynamic system.

Further, in the eighth step, the method for filtering the breathing intensity signal includes the following steps:

(1) Obtain the data of the signal, and filter the data to obtain the current value;

(2) When the data is in the unlocked state and the current value is within the locking range of the reference value, lock the data and output the locked value;

(3) When the data is in the locked state and the current value is within the unlocking range of the locked value, the data is unlocked, the current value is set as a new reference value, and the current value is output.

Further, in step (2), the described step of locking the data and outputting the lock value specifically includes:

When the data is in the unlocked state and the current value is within the locking range of the reference value, add one to the locking times;

When the number of locks does not reach the maximum number of locks, the current value is output;

When the number of locks reaches the maximum number of locks, the data is locked, the current value is set as the lock value, and the lock value is output, and the number of unlocks is cleared to zero.

Further, in step (3), when the data is in a locked state, and the current value is within the unlocking range of the locked value, the data is unlocked, and the current value is set to a new reference value and the step of outputting the current value specifically includes: :

When the data is in the locked state and the current value is within the unlocking range of the locked value, add one to the unlocking times;

When the number of unlocks does not reach the maximum number of unlocks, the lock value is output;

When the number of unlocks reaches the maximum number of unlocks, the data is unlocked, the number of locks is cleared, the current value is set as a new reference value, and the current value is output.

Another object of the present invention is to provide a neonatal respiratory sensing system with a detachment detection alarm that implements the neonatal respiratory sensing method with a detachment detection alarm, and the neonatal respiratory sensing system with a detachment detection alarm The settings are:

Sound monitoring module, parameter preset module, central control module, sound information analysis module, first alarm module, pressure monitoring module, adjustment module, breathing monitoring module, signal amplification module, filtering module, signal conversion module, breathing information analysis module, the second alarm module;

The sound monitoring module, connected with the central control module, is used for monitoring the neonatal volume through the sound sensor;

The parameter preset module, connected with the central control module, is used to set the neonatal normal volume and normal breathing parameters through the parameter preset program;

Central control module, together with sound monitoring module, parameter preset module, sound information analysis module, first alarm module, pressure monitoring module, adjustment module, respiration monitoring module, signal amplification module, filter module, signal conversion module, and respiratory information analysis module , The second alarm module is connected to control the normal operation of each module through the main control computer;

The sound information analysis module, connected with the central control module, is used to analyze the neonatal volume information through the sound information analysis program;

The first alarm module, connected with the central control module, is used for alarming through the alarm;

The pressure monitoring module, connected with the central control module, is used to measure the pressure information of the contact part of the respirator through the pressure sensor;

The adjustment module, connected with the central control module, is used to adjust the pressure of the contact part of the respirator through the adjustment program;

The respiratory monitoring module, connected with the central control module, is used to monitor the neonatal respiratory intensity through the respiratory monitoring program;

The signal amplification module is connected with the central control module, and is used for amplifying the breathing intensity signal through the signal amplification program;

a filtering module, connected with the central control module, for filtering the respiratory intensity signal through a filtering program;

The signal conversion module, connected with the central control module, is used for signal conversion after filtering through the signal conversion program;

Respiratory information analysis module, connected with the central control module, for analyzing the respiratory intensity data through the analysis program;

The second alarm module, connected with the central control module, is used for alarming through the alarm device.

Another object of the present invention is to provide a computer program product stored on a computer-readable medium, including a computer-readable program, which, when executed on an electronic device, provides a user input interface to implement the new born with drop detection alarm Methods of breathing sensing in children.

Another object of the present invention is to provide a computer-readable storage medium storing instructions, which, when the instructions are executed on a computer, cause the computer to execute the method for neonatal respiration sensing with shedding detection and alarm.

Combined with all the above-mentioned technical solutions, the advantages and positive effects of the present invention are as follows: the sound monitoring module provided in the present invention can monitor the volume of the newborn, and preliminarily determine whether the respirator falls off; the provided signal amplification module and filter module can respectively realize Signal amplification and filtering can better monitor breathing and more accurate detection of respirator falling off; the settings of the sound information analysis module and the breathing information analysis module can analyze the monitoring information, realize automatic alarms, and reduce medical staff. burden of care.

Description of drawings

FIG. 1 is a flowchart of a newborn breathing sensing method with a drop detection alarm provided by an embodiment of the present invention.

FIG. 2 is a structural block diagram of a newborn breathing sensing system with a drop detection alarm provided by an embodiment of the present invention.

In Figure 2: 1. Sound monitoring module; 2. Parameter preset module; 3. Central control module; 4. Sound information analysis module; 5. First alarm module; 6. Pressure monitoring module; 7. Adjustment module; 8. Respiratory monitoring module; 9. Signal amplification module; 10. Filtering module; 11. Signal conversion module; 12. Respiratory information analysis module; 13. Second alarm module.

FIG. 3 is a flowchart of a method for adjusting the pressure of a contact part of a respirator according to an embodiment of the present invention.

FIG. 4 is a flowchart of a method for amplifying a breathing intensity signal provided by an embodiment of the present invention.

FIG. 5 is a flowchart of a method for filtering a breathing intensity signal provided by an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Aiming at the problems existing in the prior art, the present invention provides a neonatal breathing sensing system and a sensing method with a drop-off detection alarm. The present invention is described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 , the neonatal breath sensing method with shedding detection alarm provided by an embodiment of the present invention includes the following steps:

S101, monitor the volume of the newborn through a sound sensor, and analyze the volume information of the newborn through a sound information analysis program; if it exceeds a preset value, an alarm is issued;

S102, measure the pressure information of the contact part of the respirator through a pressure sensor; adjust the pressure of the contact part of the respirator through an adjustment program;

S103, monitoring the neonatal breathing intensity through a breathing monitoring program; amplifying the breathing intensity signal through a signal amplification program, and filtering the breathing intensity signal through a filtering program;

S104, performing filtered signal conversion through a signal conversion program;

S105, analyze the respiratory intensity data through an analysis program; if the preset value is exceeded, an alarm is issued.

As shown in FIG. 2 , the neonatal breathing sensing system provided with the drop detection alarm provided by the embodiment of the present invention is provided with:

Sound monitoring module 1, parameter preset module 2, central control module 3, sound information analysis module 4, first alarm module 5, pressure monitoring module 6, adjustment module 7, respiration monitoring module 8, signal amplification module 9, filter module 10 , a signal conversion module 11, a respiratory information analysis module 12, and a second alarm module 13;

The sound monitoring module 1 is connected with the central control module 3, and is used for monitoring the volume of the newborn through the sound sensor;

The parameter preset module 2 is connected with the central control module 3, and is used for setting the normal volume and normal breathing parameters of the newborn through the parameter preset program;

Central control module 3, together with sound monitoring module 1, parameter preset module 2, sound information analysis module 4, first alarm module 5, pressure monitoring module 6, adjustment module 7, respiration monitoring module 8, signal amplification module 9, filter module 10. The signal conversion module 11, the respiratory information analysis module 12, and the second alarm module 13 are connected to control the normal operation of each module through the main control computer;

The sound information analysis module 4 is connected with the central control module 3, and is used for analyzing the neonatal volume information through the sound information analysis program;

The first alarm module 5 is connected with the central control module 3, and is used for alarming through the alarm device;

The pressure monitoring module 6, connected with the central control module 3, is used to measure the pressure information of the contact part of the respirator through the pressure sensor;

The adjustment module 7, connected with the central control module 3, is used to adjust the pressure of the contact part of the respirator through the adjustment procedure;

Respiration monitoring module 8, connected with central control module 3, for monitoring the breathing intensity of the newborn through a breathing monitoring program;

The signal amplification module 9 is connected with the central control module 3, and is used for amplifying the breathing intensity signal through the signal amplification program;

The filtering module 10, connected with the central control module 3, is used for filtering the respiratory intensity signal through a filtering procedure;

The signal conversion module 11, connected with the central control module 3, is used to perform filtered signal conversion through the signal conversion program;

The breathing information analysis module 12 is connected with the central control module 3, and is used for analyzing the breathing intensity data through the analysis program;

The second alarm module 13 is connected to the central control module 3 and used for alarming through an alarm device.

The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

Example 1

The neonatal breathing sensing method with shedding detection alarm provided by the embodiment of the present invention is shown in FIG. 1. As a preferred embodiment, as shown in FIG. 3, the embodiment of the present invention provides a method for adjusting the pressure of the contact part of the respirator. The method includes the following steps:

S201, obtain pressure information of the contact part of the respirator, and compare the obtained information with standard pressure information;

S202, according to the comparison result, obtain the result of whether the position of the respirator needs to be adjusted;

S203, according to the standard position of the respirator, determine the key position points and mark them;

S204, adjust the position of the respirator so that the position of the respirator includes all key position points.

Example 2

The neonatal breathing sensing method with shedding detection alarm provided by the embodiment of the present invention is shown in FIG. 1 . As a preferred embodiment, as shown in FIG. 4 , the method for amplifying the breathing intensity signal provided by the embodiment of the present invention is as follows:

S301, construct a detection signal receiving matrix;

S302, performing singular value decomposition on the detection signal receiving matrix;

S303, construct a feedback signal matrix according to the singular value decomposition result;

S304, feedback and amplify the received matrix signal by using the feedback signal matrix.

Example 3

The neonatal breathing sensing method with shedding detection alarm provided by the embodiment of the present invention is shown in FIG. 1 . As a preferred embodiment, as shown in FIG. 5 , the method for filtering the breathing intensity signal provided by the embodiment of the present invention includes the following: step:

S401, acquiring data of the signal, and filtering the data to obtain a current value;

S402, when the data is in an unlocked state and the current value is within the locking range of the reference value, lock the data and output the locked value;

S403 , when the data is in a locked state and the current value is within the unlocking range of the locked value, unlock the data, set the current value as a new reference value, and output the current value.

When the present invention is used, the volume of the newborn is monitored by the sound sensor, and the volume information of the newborn is analyzed by the sound information analysis program; if the preset value is exceeded, the alarm is issued; the pressure information of the contact part of the respirator is measured by the pressure sensor. ; Adjust the pressure of the contact part of the respirator through the adjustment program; monitor the neonatal breathing intensity through the respiration monitoring program; amplify the respiration intensity signal through the signal amplification program, and filter the respiration intensity signal through the filtering program; through signal conversion The program performs the filtered signal conversion; the analysis program is used to analyze the respiratory intensity data; if the preset value is exceeded, the alarm is issued.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this, any person skilled in the art is within the technical scope disclosed by the present invention, and all within the spirit and principle of the present invention Any modifications, equivalent replacements and improvements made within the scope of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. a neonatal breath sensing method with shedding detection alarm is characterized in that, the described neonatal breathing sensing method with shedding detection alarm comprises the following steps: The first step is to monitor the volume of the newborn through the sound sensor, and obtain the first information of the volume information of the newborn and the second information representing the time observation point of the first information corresponding to each other. M or more third information. Time series data information, where M is a natural number above 3; The second step is to use the second information contained in the N pieces of the third information contained in the time series data information obtained in the first step to calculate the absolute value of the time difference between the observation points, and calculate the absolute value of the time difference between the observation points. The set of said time differences obtained is generated as the first set, wherein, N is a natural number greater than 3; In the third step, for each group of the third information for which the absolute value of the time difference is calculated, the value indicating the first information at the first time and the predetermined time elapsed from the first time are calculated. The autocorrelation coefficient of the correlation between the values of the first information at the second time, generating the set of the calculated autocorrelation coefficients as the second set; In the fourth step, based on the first set obtained in the second step and the second set obtained in the third step, an autocorrelation function representing the relationship between the set of time differences and the set of autocorrelation coefficients is calculated; Described autocorrelation function, analyzes described 1st information in time series; Output the 4th information about neonatal volume information analysis result; In the fifth step, if the fourth information output in the fourth step exceeds the preset value, an alarm is given by an alarm device; the pressure information of the contact part of the respirator is measured by a pressure sensor; The sixth step is to compare the pressure information of the contact part of the respirator measured by the pressure sensor obtained in the fifth step with the standard pressure information; The seventh step, based on the comparison results, obtain the result of whether the position of the respirator needs to be adjusted; if adjustment is required, determine the key position points and mark them according to the standard position of the respirator; adjust the position of the respirator so that all The position of the respirator includes all key points; In the eighth step, after adjusting the position of the respirator in the seventh step, the neonatal breathing intensity is monitored through the respiration monitoring program; the respiration intensity signal is amplified through the signal amplification program, and the respiration intensity signal is filtered through the filtering program; In the ninth step, the signal filtered in the eighth step is converted through a signal conversion program; the breathing intensity data obtained by the eighth step monitoring is analyzed; if the preset value is exceeded, an alarm is issued by an alarm device. 2. as claimed in claim 1, it is characterized in that, in the 8th step, the described method for amplifying the breathing intensity signal is: 1) Construct the detection signal receiving matrix; 2) Perform singular value decomposition on the detection signal receiving matrix; 3) Construct the feedback signal matrix according to the singular value decomposition result; 4) Feedback and amplify the received matrix signal by using the feedback signal matrix. 3. as claimed in claim 2 with the newborn breathing sensing method of falling off detection alarm, it is characterized in that, in step 3), the described method for constructing feedback signal matrix according to singular value decomposition result is: Obtain the phase information matrix of each signal to be processed: perform singular value decomposition on the detection signal receiving matrix to obtain its generalized inverse matrix: calculate the rank of the generalized inverse matrix; Screen the phase information matrix; remove the values smaller than the preset threshold in the phase information matrix to obtain a matrix; Compute the rank of the phase information matrix: Compute the proportion of phase information for each signal to be processed: Construct the phase information normalized diagonal matrix: Determine the heavy eigenvalues of the matrix, and then calculate the standard deviation and construct the feedback scale matrix with this standard deviation. 4. as claimed in claim 2, it is characterized in that, in step 4), the method for feeding back and amplifying the reception matrix signal using feedback signal matrix is: Feedback the received matrix signal according to the feedback signal matrix to obtain the matrix to be amplified; determine the signal amplification ratio; amplify the to-be-amplified matrix to obtain the amplified signal matrix for input to the multi-input and output dynamic system; perform antilogarithmic operation on the matrix, Obtain the signal matrix for input to the multi-input-output dynamic system. 5. The neonatal breathing sensing method with shedding detection alarm as claimed in claim 1, wherein in the eighth step, the method for filtering the breathing intensity signal comprises the following steps: (1) Obtain the data of the signal, and filter the data to obtain the current value; (2) When the data is in the unlocked state and the current value is within the locking range of the reference value, lock the data and output the locked value; (3) When the data is in the locked state and the current value is within the unlocking range of the locked value, the data is unlocked, the current value is set as a new reference value, and the current value is output. 6. The neonatal breathing sensing method with shedding detection alarm as claimed in claim 5, wherein in step (2), the described step of locking the data and outputting the locking value specifically comprises: When the data is in the unlocked state and the current value is within the locking range of the reference value, add one to the locking times; When the number of locks does not reach the maximum number of locks, the current value is output; When the number of locks reaches the maximum number of locks, the data is locked, the current value is set as the lock value, and the lock value is output, and the number of unlocks is cleared to zero. 7. as claimed in claim 5, it is characterized in that, in step (3), when the data is in the locked state, and the current value is in the unlocking range of the locked value, it is characterized in that , unlock the data, set the current value as the new reference value, and output the current value. The steps include: When the data is in the locked state and the current value is within the unlocking range of the locked value, add one to the unlocking times; When the number of unlocks does not reach the maximum number of unlocks, the lock value is output; When the number of unlocks reaches the maximum number of unlocks, the data is unlocked, the number of locks is cleared, the current value is set as a new reference value, and the current value is output. 8. A neonatal breathing sensing system with a shedding detection alarm for implementing the newborn breathing sensing method with a shedding detection alarm as claimed in claims 1-7, wherein the newborn with a shedding detection alarm The breath sensing system settings are: Sound monitoring module, parameter preset module, central control module, sound information analysis module, first alarm module, pressure monitoring module, adjustment module, breathing monitoring module, signal amplification module, filtering module, signal conversion module, breathing information analysis module, the second alarm module; The sound monitoring module, connected with the central control module, is used for monitoring the neonatal volume through the sound sensor; The parameter preset module, connected with the central control module, is used to set the normal volume and normal breathing parameters of the neonate through the parameter preset program; Central control module, together with sound monitoring module, parameter preset module, sound information analysis module, first alarm module, pressure monitoring module, adjustment module, respiration monitoring module, signal amplification module, filter module, signal conversion module, and respiratory information analysis module , The second alarm module is connected to control the normal operation of each module through the main control computer; The sound information analysis module, connected with the central control module, is used to analyze the neonatal volume information through the sound information analysis program; The first alarm module, connected with the central control module, is used for alarming through the alarm; The pressure monitoring module, connected with the central control module, is used to measure the pressure information of the contact part of the respirator through the pressure sensor; The adjustment module, connected with the central control module, is used to adjust the pressure of the contact part of the respirator through the adjustment program; The respiratory monitoring module, connected with the central control module, is used to monitor the neonatal respiratory intensity through the respiratory monitoring program; The signal amplification module is connected with the central control module, and is used for amplifying the breathing intensity signal through the signal amplification program; a filtering module, connected with the central control module, for filtering the respiratory intensity signal through a filtering program; The signal conversion module, connected with the central control module, is used for signal conversion after filtering through the signal conversion program; Respiratory information analysis module, connected with the central control module, for analyzing the respiratory intensity data through the analysis program; The second alarm module, connected with the central control module, is used for alarming through the alarm device. 9. A computer program product stored on a computer-readable medium, comprising a computer-readable program that, when executed on an electronic device, provides a user input interface to implement a drop-off detection method according to any one of claims 1-7 Alarming methods for neonatal breath sensing. 10. A computer-readable storage medium storing instructions, which, when executed on a computer, cause the computer to execute the neonatal breathing sensing method with a drop detection alarm according to any one of claims 1-7.

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