KR20130058558A - Breath measurement system based on x-band doppler radar - Google Patents

Abstract

PURPOSE: A respiration measurement system capable of using an X-band Doppler radar is provided to use a DFD(Dual Frequency Differential) method, thereby facilitating the measurement. CONSTITUTION: A transceiver process unit(120) obtains a bio-signal from a patient. An antenna unit propagates a frequency to the patient. An amplifier(130) amplifies the size of the bio-signal. A TCP IP transmission unit(140) transmits bio-signal to a respiration analysis equipment. A noise elimination filter unit removes the noise of the bio-signal. [Reference numerals] (110) X-Band antenna unit; (120) Transceiver process unit; (130) Amplifier; (140) TCP/IP transmission unit

Description

Breath Measurement System based on X-Band Doppler Radar.

The present invention relates to a respiratory measurement system using an X-band Doppler radar, and more particularly, to a state in which the bio-radar system detects a biological signal and remotely measures respiration by radiating an RF signal to a heart of a human, and is not attached to the body. X-band Doppler measures breathing in the system and stores and manages the measured breathing information in real time in the control monitoring means to generate an alarm when the preset warning / danger level is reached and to store and manage the relevant breathing value information in the patient history management unit. Respiratory measurement system using radar.

The existing method of measuring breathing is mainly the system for measuring breathing by attaching it to the patient's body, and it is a system that can measure breathing in a non-contact (non-constrained) form. Systems that can be measured in patients have been disclosed.

Prior art related to the present invention is a Doppler heartbeat signal that outputs the heartbeat signal through the Doppler shift (frequency) according to the movement of the heart and blood from the microwave and irradiated to the human body includes a variation of the human body according to breathing When the respiratory signal is separated and the signal component of the heartbeat is extracted, the position of the maximum value of the heartbeat signal acquired by the microwave changes as compared with the standard ECG heartbeat signal due to the effect of respiration. When the position of the maximum value of the signal changes, the HRV theory is applied efficiently because the time from one maximum time to the maximum value of the next heartbeat signal is different from the RR interval of the heartbeat signal obtained by ECG. There is a problem that cannot be done.

In addition, the general HRV (Heart Rate Variability) is well represented in the Patent Publication No. 2004-0043981 (2004.05.27) for the indicator indicating the rate of change in the heart rate, which uses the HRV technology to measure the long-term heart rate and analyze it By evaluating the function and pulse level of the autonomic nervous system, it is still uncomfortable for patients by measuring the sensor in contact with the human body such as ECG.

Publication No. 2004-0043981 (2004.05.27)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

An object of the present invention is to measure the respiration in the state of not attached to the body with a bio-radar system that measures the respiration remotely by detecting the biological signal by radiating an RF signal to the heart of a person.

Another object of the present invention is to store and manage the measured respiratory information in real-time monitoring and monitoring means to generate an alarm when the preset warning / danger level is reached, and to store and manage the respiratory value information in the patient history management unit.

In order to achieve the object of the present invention,

Respiratory measurement system using the X-band Doppler radar,

Transmitting and receiving unit 120 for providing a frequency to the antenna unit to propagate the frequency of the X-band band to the patient, and to obtain a biological signal from the patient received from the antenna unit,

An antenna unit 110 for propagating the frequency processed by the transmission / reception processor to the patient;

An amplification unit 130 for amplifying the size of the biosignal by amplifying the biosignal received by the transmission and reception processor;

Transmission and reception means (100) comprising a TCP / IP transmitter (140) for transmitting the biological signal amplified by the amplification unit to the respiratory analysis means using the TCP / IP protocol;

TCP / IP receiver 210 for receiving the biological signal transmitted from the transmission and reception means,

A noise removing filter unit 220 for removing noise of the biological signal received from the TCP / IP receiving unit 210;

A breathing pulse filter unit 230 for extracting a breathing pulse from the biological signal from which the noise is removed by the noise removing filter unit;

A respiratory rate calculation filter 240 for extracting max and max values of the extracted respiratory pulses and calculating respiratory rate at intervals of two terms by the patient's respiratory cycle;

As the cumulative increment value, the interval between the max peak value of one breath pulse and the max peak value of the next term is calculated, and the respiratory information is calculated by referring to the calculated interval of one breath and the term of the next breath. Respiratory analysis means 200 comprising a respiratory information calculation unit 250;

The respiration information calculated by the respiratory analysis means is obtained and stored in the patient history management unit, and a control that generates an alarm when the corresponding level value is exceeded by comparing the warning level value and the danger level value of the preset respiration information for each patient. It is configured to include a monitoring means 300 to solve the problems of the present invention.

Respiration measurement system using an X-band Doppler radar according to the present invention,

A bioradar system that radiates RF signals to the heart of a person and detects vital signs and measures respiration remotely. This system can measure breathing without being attached to the body. This will provide the effect of real-time respiratory rate measurement.

In addition, the measured breathing information is stored and managed in real time by the control monitoring means to generate an alarm when the preset warning / danger level is reached, and to manage and manage the corresponding breathing value information in the patient history management unit. In addition, respiratory information management by patient / day / week / month / year will be provided.

1 is an overall configuration diagram of a respiratory measurement system using an X-band Doppler radar according to an embodiment of the present invention.
Figure 2 is a block diagram of the transmission and reception means of the breath measurement system using the X-band Doppler radar in accordance with an embodiment of the present invention.
Figure 3 is a block diagram of the respiratory analysis means of the respiratory measurement system using an X-band Doppler radar in accordance with an embodiment of the present invention.
Figure 4 is a block diagram of the control monitoring means of the breath measurement system using the X-band Doppler radar in accordance with an embodiment of the present invention.
5 is an exemplary view showing an analysis process of the respiratory analysis means of the respiratory measurement system using the X-band Doppler radar according to an embodiment of the present invention.

Respiration measurement system using an X-band Doppler radar according to an embodiment of the present invention for achieving the above object,

In the breath measurement system using X-band Doppler radar,

Transmitting and receiving unit 120 for providing a frequency to the antenna unit to propagate the frequency of the X-band band to the patient, and to obtain a biological signal from the patient received from the antenna unit,

An antenna unit 110 for propagating the frequency processed by the transmission / reception processor to the patient;

An amplification unit 130 for amplifying the size of the biosignal by amplifying the biosignal received by the transmission and reception processor;

Transmission and reception means (100) comprising a TCP / IP transmitter (140) for transmitting the biological signal amplified by the amplification unit to the respiratory analysis means using the TCP / IP protocol;

TCP / IP receiver 210 for receiving the biological signal transmitted from the transmission and reception means,

A noise removing filter unit 220 for removing noise of the biological signal received from the TCP / IP receiving unit 210;

A breathing pulse filter unit 230 for extracting a breathing pulse from the biological signal from which the noise is removed by the noise removing filter unit;

A respiratory rate calculation filter 240 for extracting max and max values of the extracted respiratory pulses and calculating respiratory rate at intervals of two terms by the patient's respiratory cycle;

As the cumulative increment value, the interval between the max peak value of one breath pulse and the max peak value of the next term is calculated, and the respiratory information is calculated by referring to the calculated interval of one breath and the term of the next breath. Respiratory analysis means 200 comprising a respiratory information calculation unit 250;

The respiration information calculated by the respiratory analysis means is obtained and stored in the patient history management unit, and a control that generates an alarm when the corresponding level value is exceeded by comparing the warning level value and the danger level value of the preset respiration information for each patient. Monitoring means 300; characterized in that comprises a.

At this time, the respiratory analysis means 200,

Analyzing the average value using the cumulative value of the three times in the calculated respiratory information is characterized in that it further comprises a minute average breathing value calculator 260 for calculating the average minute breathing value.

At this time, the control monitoring means 300,

Real-time breathing value acquisition unit 320 for obtaining the respiratory information calculated by the respiratory analysis means in real time,

Patient warning / risk level setting unit 330 for setting the warning level value and the risk level value of the respiratory information for each patient,

Alarm generation unit 340 for generating an alarm when exceeding by determining whether the level value is exceeded by comparing the warning level value set by the patient warning / danger level setting unit with the risk level value and the respiratory information obtained in real time. Wow,

Characterized in that it comprises a patient history management unit 310 for storing and managing the respiratory information obtained in real time for each patient.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the respiratory measurement system using the X-band Doppler radar of the present invention.

1 is an overall configuration diagram of a respiratory measurement system using an X-band Doppler radar according to an embodiment of the present invention.

As shown in FIG. 1, the respiratory measurement system using the X-band Doppler radar according to the present invention transmits and receives a frequency of an X-band band to a patient to obtain a bio-signal 100, and the obtained bio-signal. Respiratory analysis means for calculating the respiratory value by analyzing the signal 200 and control monitoring means 300 is connected to the network is configured.

Using the principle of extracting breathing signals using echo waves, which is Doppler's principle, we use a technology to measure breathing by determining chest movements as well as patient movement information. Will be constructed.

Breathing is measured using the Dual Frequency Differential method, which is a basic technology, and has the principle of extracting the signal with the difference value of the phase difference among the transmitted biological signals and transmitting 10Ghz (X-band) frequency. The patient's breathing value is calculated by sampling the values and filtering the first to third orders.

In the measurement of breathing, a system for measuring breathing using an X-Band antenna is formed from a restrained form (attached to the body) to an unrestrained form.

In addition, since the received signal pulse is very small, it amplifies the magnitude of the signal through amplification and transmits the signal to the network.

The filter of the transmitted signal is filtered through 3rd order, and the collected information is composed of a system that can be quantified and monitored for real-time monitoring.

Figure 2 is a block diagram of the transmission and reception means of the breath measurement system using the X-band Doppler radar in accordance with an embodiment of the present invention.

As shown in Figure 2, the transmission and reception means 100,

Transmitting and receiving unit 120 for providing a frequency to the antenna unit to propagate the frequency of the X-band band to the patient, and to obtain a biological signal from the patient received from the antenna unit,

An antenna unit 110 for propagating the frequency processed by the transmission / reception processor to the patient;

An amplification unit 130 for amplifying the size of the biosignal by amplifying the biosignal received by the transmission and reception processor;

It is configured to include a TCP / IP transmitter 140 for transmitting the biological signal amplified by the amplification unit to the respiratory analysis means using the TCP / IP protocol.

That is, the transmit / receive processor 120 provides a frequency to the antenna unit to propagate the frequency of the X-band band to the patient, and obtains a biological signal from the patient received from the antenna unit.

The amplifying unit may amplify the size of the biosignal by amplifying the biosignal received by the transmission and reception processor to analyze the microscopic biosignal.

The TCP / IP transmitter 140 transmits the biological signal amplified by the amplifier to the respiratory analysis means using the TCP / IP protocol.

Figure 3 is a block diagram of the respiratory analysis means of the respiratory measurement system using an X-band Doppler radar in accordance with an embodiment of the present invention.

Respiration analysis means 200 shown in Figure 3,

TCP / IP receiver 210 for receiving the biological signal transmitted from the transmission and reception means,

A noise removing filter unit 220 for removing noise of the biological signal received from the TCP / IP receiving unit 210;

A breathing pulse filter unit 230 for extracting a breathing pulse from the biological signal from which the noise is removed by the noise removing filter unit;

A respiratory rate calculation filter 240 for extracting max and max values of the extracted respiratory pulses and calculating respiratory rate at intervals of two terms by the patient's respiratory cycle;

As the cumulative increment value, the interval between the max peak value of one breath pulse and the max peak value of the next term is calculated, and the respiratory information is calculated by referring to the calculated interval of one breath and the term of the next breath. Respiratory information calculation unit 250 is configured to include.

As shown in FIG. 5, the noise removing filter unit 220 removes noise of the biosignal received from the TCP / IP receiving unit 210, and the respiratory pulse filter unit 230 includes the noise removing filter unit. As a result, breathing pulses are extracted from the biological signal from which the noise is removed.

For example, the first noise is removed by averaging 200 data per second and 20 second data leveling per second is performed by the respiratory pulse filter unit for the second data leveling.

The respiratory rate calculation filter 240 extracts the max and max values of the extracted respiratory pulses, and calculates the respiratory rate at intervals of two terms based on the breathing period of the patient.

That is, when the peaks of breathing is 1 breath and 2 breaths, the respiratory rate is calculated, and the general respiration calculation method is used.

Thereafter, the respiratory information calculating unit 250 calculates the interval between the max peak value of one breath pulse and the max peak value of the next term as a cumulative increment value, and the calculated term of one breath and the term of the next breath and Respiratory information is calculated by referring to the interval of.

The term of two peaks is one set, for example, 1 peak + 2 peaks = respiratory rate calculation is the baseline, 2 peaks + 3 peaks = next respiratory rate calculation, 3 peaks + 4 peaks = next respiratory rate It means calculating the respiratory rate by adding the previous peak information and the corresponding peak information, such as calculation, ...., etc., and repeatedly calculating the previous and subsequent respiration values each time.

Referring to FIG. 5, if only five samples are extracted per second, 0.2 seconds per one is recognized, and when the third and fourth points are recognized as peaks, the peaks and peaks are judged as one breath, and the second breath is calculated. It is.

In other words, 0.2 seconds after 18 times is 3.6 seconds, it is calculated that two breaths.

Meanwhile, according to an additional aspect, the respiratory analysis means 200 further includes an average respiratory value calculation unit 260 for calculating an average respiratory value per minute by analyzing an average value using three cumulative values in the calculated respiratory information. do.

In other words, 3.6 seconds: 2 times = 60 seconds: X, the result is 33 breaths per minute.

After all, the average respiratory rate is (previous data / current data), and the respiratory rate is calculated using time values of peaks 1 and 2.

Figure 4 is a block diagram of the control monitoring means of the breath measurement system using the X-band Doppler radar in accordance with an embodiment of the present invention.

4, the control monitoring means 300 obtains the respiratory information calculated by the respiratory analysis means and stores it in the patient history management unit, and compares the warning level value and the risk level value of the preset respiratory information for each patient. It is configured to include; to generate an alarm when the level value is exceeded.

That is, the real-time breathing value acquisition unit 320 for obtaining the respiratory information calculated by the respiratory analysis means in real time,

Patient warning / risk level setting unit 330 for setting the warning level value and the risk level value of the respiratory information for each patient,

Alarm generation unit 340 for generating an alarm when exceeding by determining whether the level value is exceeded by comparing the warning level value set by the patient warning / danger level setting unit with the risk level value and the respiratory information obtained in real time. Wow,

The patient history management unit 310 is configured to store and manage the respiratory information obtained in real time for each patient.

The real-time breathing value acquisition unit 320 acquires the respiratory information calculated by the respiratory analysis means in real time, and the patient warning / risk level setting unit 330 is the warning level value and risk level value of the respiratory information for each patient It is intended for administrators to set.

The alarm generating unit 340 compares the warning level value set by the patient warning / danger level setting unit with the respiratory information obtained in real time to determine whether the level value is exceeded and generates an alarm when it exceeds. do.

That is, the basic respiratory rate is set to 30 to 50, and the alarm signal is generated when the respiratory rate per minute is greater than 50 times or less than 30 times.

Through the configuration and operation as described above, by radiating an RF signal to the heart of a person, a bio-radar system that detects a biological signal and remotely measures breathing can measure breathing without being attached to the body. Real-time respiratory rate measurement will be provided for patients who need measurement or monitoring.

It will be appreciated by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, the above-described embodiments are to be understood as illustrative in all respects and not restrictive.

The scope of the invention is indicated by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the invention. do.

100: transmission and reception means
200: respiratory analysis means
300 control monitoring means

Claims (3)

In the breath measurement system using X-band Doppler radar,
Transmitting and receiving unit 120 for providing a frequency to the antenna unit to propagate the frequency of the X-band band to the patient, and to obtain a biological signal from the patient received from the antenna unit,
An antenna unit 110 for propagating the frequency processed by the transmission / reception processor to the patient;
An amplification unit 130 for amplifying the size of the biosignal by amplifying the biosignal received by the transmission and reception processor;
Transmission and reception means (100) comprising a TCP / IP transmitter (140) for transmitting the biological signal amplified by the amplification unit to the respiratory analysis means using the TCP / IP protocol;
TCP / IP receiver 210 for receiving the biological signal transmitted from the transmission and reception means,
A noise removing filter unit 220 for removing noise of the biological signal received from the TCP / IP receiving unit 210;
A breathing pulse filter unit 230 for extracting a breathing pulse from the biological signal from which the noise is removed by the noise removing filter unit;
A respiratory rate calculation filter 240 for extracting max and max values of the extracted respiratory pulses and calculating respiratory rate at intervals of two terms by the patient's respiratory cycle;
As the cumulative increment value, the interval between the max peak value of one breath pulse and the max peak value of the next term is calculated, and the respiratory information is calculated by referring to the calculated interval of one breath and the term of the next breath. Respiratory analysis means 200 comprising a respiratory information calculation unit 250;
The respiration information calculated by the respiratory analysis means is obtained and stored in the patient history management unit, and a control that generates an alarm when the corresponding level value is exceeded by comparing the warning level value and the danger level value of the preset respiration information for each patient. Respiratory measurement system using an X-band Doppler radar comprising a; monitoring means (300).
The method of claim 1,
The respiratory analysis means 200,
Respiratory measurement using an X-band Doppler radar, characterized in that further comprising a minute average breathing value calculation unit 260 for calculating the average respiratory value per minute by analyzing the average value using the cumulative value of three times in the calculated respiratory information system.
The method of claim 1,
The control monitoring means 300,
Real-time breathing value acquisition unit 320 for obtaining the respiratory information calculated by the respiratory analysis means in real time,
Patient warning / risk level setting unit 330 for setting the warning level value and the risk level value of the respiratory information for each patient,
Alarm generation unit 340 for generating an alarm when exceeding by determining whether the level value is exceeded by comparing the warning level value set by the patient warning / danger level setting unit with the risk level value and the respiratory information obtained in real time. Wow,
Respiration measurement system using an X-band Doppler radar, characterized in that comprises a patient history management unit 310 for storing and managing the real-time obtained respiratory information for each patient.

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