CN104305961B - Gurgling sound monitors identifying system - Google Patents

Abstract

The invention discloses a bowel sound monitoring and identification system, which includes: a bowel sound collection device, which is used to collect bowel sound acoustic signals, and convert the bowel sound acoustic signals into digital electrical signals to Obtain and transmit bowel sound data; information transmission network, the information transmission network is used to transmit bowel sound data; data processing center, the data processing center is used to receive, store and manage bowel sound data, and according to the pre-stored data in the data processing center Bowel sound feature database for diseases, through the bowel sound recognition algorithm to analyze and identify bowel sound data, so as to screen and diagnose diseases based on the analysis and recognition results. The bowel sound monitoring and recognition system of the present invention can conveniently monitor the bowel sound and identify the characteristics of the bowel sound, so as to screen and diagnose diseases accordingly, and the system has wide application, powerful functions, and good medical assistance function.

Description

Bowel sounds monitoring and recognition system

technical field

The invention relates to the technical field of medical equipment, in particular to a monitoring and identification system for bowel sounds.

Background technique

Bowel sounds refer to intermittent gurgling sounds produced by the gas and liquid in the intestinal tube being pushed during peristalsis. In 1905, Cannon first systematically explained the sounds auscultated in the abdomen, linking abdominal sounds to the gastrointestinal system. With the progress of medical research, bowel sounds have become an important indicator for the diagnosis of abdominal diseases.

For different diseases, bowel sounds show different characteristics. Under normal circumstances, bowel sounds are about 4-5 times per minute. The frequency range, size and frequency of bowel sounds vary greatly. Less and less loud. In patients with acute gastroenteritis, after taking laxatives, or when gastrointestinal bleeding occurs, bowel movements will increase, and bowel sounds can reach more than ten times per minute, but the pitch is not high-pitched. This phenomenon is called bowel sounds. active. For patients with mechanical intestinal obstruction, bowel sounds are frequent, loud and high-pitched, and sometimes even tinkling or metallic. This condition is called hyperactive bowel sounds. Elderly patients with constipation, peritonitis, electrolyte imbalance, and low gastrointestinal motility, due to persistent intestinal obstruction, strain the intestinal wall muscles, weaken the peristalsis of the intestinal wall, and weaken the bowel sounds, which can only be heard once in a few minutes. For patients with acute peritonitis or paralytic ileus, bowel sounds cannot be heard for several minutes. This phenomenon is called absent bowel sounds. Therefore, the method of auscultating bowel sounds can be used for health monitoring, disease screening and identification of diseases with pathological characteristics of bowel sounds.

At present, clinical abdominal auscultation is mostly performed with a stethoscope, and the auscultation time generally lasts from half a minute to several minutes. The pathological characteristics of bowel sounds are related to the type of disease. The bowel sounds of different patients suffering from the same disease are different, and the bowel sounds of the same patient have obvious changes at different times. Therefore, the diagnosis of bowel sounds requires a very rich clinical knowledge. experience. In addition, for patients such as postoperative intestinal obstruction, intestinal motility is low, and there will be no obvious bowel sounds for several hours after surgery, and the first postoperative bowel sounds are one of the indicators for judging the recovery of patients. The method of time auscultation is not applicable. In addition, since the bowel sound signal changes with time, recording certain characteristic bowel sounds detected by auscultation for analysis and identification of bowel sound characteristics can effectively reduce the requirement for clinical experience. At the same time, the recorded bowel sounds can be played repeatedly and compared. For the collective consultation of multiple doctors, and the judgment of the development of the disease by comparing the changes in the bowel sounds of the same patient over a period of time, it is useful in auxiliary diagnosis and medical treatment. It works a lot.

Common recognition methods include Bayesian algorithm, neural network, etc. These algorithms are widely used in speech recognition and speaker recognition. Bowel sounds are not exactly the same as speech in terms of frequency range, sound size, and time interval. Therefore, the monitoring and identification of bowel sounds is a problem that needs to be studied and solved.

Contents of the invention

The present invention aims at solving one of the technical problems in the related art mentioned above at least to a certain extent.

For this reason, the object of the present invention is to propose a kind of bowel sound monitoring identification system, this system can easily identify and diagnose related diseases by monitoring bowel sound, and this system is widely used, powerful, has good medical assistance.

In order to achieve the above object, an embodiment of the present invention proposes a bowel sound monitoring and identification system, including: a bowel sound collection device, the bowel sound collection device is used to collect bowel sound acoustic signals, and the bowel sound The sound acoustic signal is converted into a digitized electrical signal to obtain and transmit bowel sound data; an information transmission network is used to transmit the bowel sound data; a data processing center is used for receiving, storing, and managing the bowel sound data, and analyzing and identifying the bowel sound data through the bowel sound recognition algorithm according to the bowel sound feature library of the disease pre-stored in the data processing center, so as to analyze and identify the bowel sound data according to the analysis and identification results Disease screening and diagnosis.

According to the bowel sound monitoring and recognition system of the embodiment of the present invention, the bowel sound acoustic signal is firstly collected, and then the signal is digitally converted to output the bowel sound data, and finally the bowel sound data is compared and matched with the pre-stored disease bowel sound feature library According to the bowel sound recognition algorithm, the bowel sound data is analyzed, and the disease identification, screening and diagnosis are carried out according to the analysis results. Therefore, the system can conveniently identify and diagnose diseases with pathological characteristics of bowel sounds, and the system is widely used, powerful, and has a very good role in medical assistance. For example, the system can be used for both long-term monitoring and short-term monitoring, and can be used for various purposes such as ward monitoring and physical examination. At the same time, the feature library of bowel sounds for diseases reduces the requirement for doctors to have experience in diagnosing bowel sounds. By referring to and comparing bowel sounds of common diseases, it can assist in disease screening and diagnosis. In addition, the feature database of various diseases can be updated at any time to follow up with the latest medical research results.

In addition, the bowel sound monitoring and identification system according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

In some examples, the bowel sound collection device includes: a sensor for converting the bowel sound acoustic signal into an analog electrical signal; a pre-filter and a pre-amplifier, the pre-filter and the preamplifier are used to filter and amplify the analog electrical signal respectively; the A/D converter converts the filtered and amplified analog electrical signal into a digital signal; the data transmission module , the data transmission module is connected to the information transmission network, and is used to transmit the digital signal to the information transmission network; a power supply, the power supply is used to supply power to the bowel sound collection device; a power management module, The power management module is used to manage the power supply to provide a stable power supply and judge the power; the microcontroller is used to control the overall circuit of the bowel sound collection device to ensure that the The overall circuit operates according to the preset process. .

In some examples, the sensor is a pickup, a piezoelectric sensor, or a MEMS sensor.

In some examples, there are one or more sensors.

In some examples, the bowel sound collection device has a membrane-type auscultation head, a bell-type auscultation head or a dual-purpose auscultation head.

In some examples, the characteristics of bowel sounds include pitch, loudness, bowel activity frequency, frequency spectrum, and bowel activity characteristic parameters.

In some examples, the bowel sound recognition algorithm extracts and analyzes the bowel sound signal to obtain pitch, loudness, intestinal activity frequency, spectrum range, and intestinal activity characteristic parameters, and performs disease diagnosis based on the bowel sound feature library. Screening and Diagnosis.

In some examples, there are one or more bowel sound collection devices.

In some examples, the information transmission network is WIFI, GPRS/3G/4G mobile Internet or Ethernet

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

FIG. 1 is a structural diagram of a bowel sound monitoring and identification system according to an embodiment of the present invention;

FIG. 2 is a structural block diagram of a bowel sound collection device according to an embodiment of the present invention;

Fig. 3 is a flowchart of bowel sound signal processing of the bowel sound monitoring and recognition system according to an embodiment of the present invention;

Fig. 4 is a flow chart of bowel sound recognition of the bowel sound monitoring and recognition system according to an embodiment of the present invention;

Fig. 5 is a schematic diagram of 6 kinds of bowel sounds and their corresponding disease types according to an embodiment of the present invention; and

Fig. 6 is a functional schematic diagram of a data processing center according to an embodiment of the present invention.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, a first feature being "on" or "under" a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them. Moreover, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. "Below", "below" and "under" the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is less horizontal than the second feature.

The bowel sound monitoring and identification system proposed according to the embodiments of the present invention will be described below with reference to the accompanying drawings. Referring to FIG. 1 , the system includes: a bowel sound collection device 110 , an information transmission network 120 and a data processing center 130 .

Wherein, the bowel sound collection device 110 is used for collecting the bowel sound acoustic signal, and converting the bowel sound acoustic signal into a digitized electrical signal, so as to obtain output bowel sound data.

The information transmission network 120 is used for transmitting bowel sound data.

The data processing center 130 is used to receive, store, and manage bowel sound data, and analyze and identify the bowel sound data through the bowel sound recognition algorithm according to the bowel sound feature library of the disease pre-stored in the data processing center 130, so as to Analyze the results for disease screening and diagnosis. Wherein, for example, the data processing center 130 may include a database for storing bowel sound data, and the database pre-stores bowel sound feature databases of various diseases. Wherein, the characteristics of bowel sounds include, for example, pitch, loudness, intestinal activity frequency, spectrum range, and intestinal activity characteristic parameters.

The data processing center 130 is, for example, a computer or a server, which can realize functions of data storage, management access, and analysis and recognition. The database stores and manages the collected bowel sound data, and at the same time, according to the pre-stored bowel sound feature library of various diseases, runs the bowel sound recognition algorithm to identify the characteristics of bowel sounds and store disease screening and diagnosis result. In addition, in the specific implementation process, the database of the data processing center 130 can also provide data access functions, such as the on-duty nurse at the nurse station, the on-duty doctor in the office, the researchers in the laboratory, the doctors in the consultation room, and other users with access rights. Can access the database. Moreover, the database can provide multiple screening modes such as patient name, examination time, disease type, etc., so as to facilitate the monitoring, diagnosis and research of bowel sounds.

Regarding the above-mentioned bowel sound algorithm, it extracts features such as pitch, loudness, intestinal activity frequency, spectrum range, and intestinal activity characteristic parameters represented by a certain section of bowel sound data, and uses the pre-stored bowel sound characteristics of various diseases The library identifies the diseases that are most similar to the data in this section, and excludes diseases with low similarity, so as to realize the screening and diagnosis of diseases.

In some examples, as shown in FIG. 1 , for example, there may be one or more bowel sound collection devices 110 , and the number of bowel sound collection devices 110 may be determined according to actual needs. In specific use, each patient can wear a bowel sound collection device 110 according to the number of patients in use, and according to the patient's physical condition and monitoring purpose, it can be worn in supine, sitting or standing positions. Specifically, the bowel sound collection device 110 can be placed close to the abdominal surface of the patient to collect bowel sound signals. In addition, the length of monitoring time can be controlled as required. For example, for postoperative patients, you can use the supine and long-term monitoring method to obtain the recovery of the patient; for medical examiners, you can use the sitting or standing position for short-term monitoring.

The information transmission network 120 is, for example, WIFI, GPRS/3G/4G mobile Internet or Ethernet. The information transmission network 120 connects the collection device 110 and the data processing center 130 to complete data transmission between the two. The information transmission network 120 distinguishes the data transmitted by each bowel sound collection device 110, and transmits the bowel sound data obtained by multiple bowel sound collection devices 110 to the database respectively, so as to realize multiple patients, multiple bowel sound collection devices 110 at the same time and long-term data transmission to ensure data reliability, validity and real-time performance.

In some examples, as shown in FIG. 2 , the bowel sound collection device 110 includes, for example: a sensor 111, a pre-filter 112, a pre-amplifier 113, an A/D converter 114, a data transmission module 115, a power supply 116, a power supply Management module 117 and microcontroller 118 .

Wherein, the sensor 111 is used to convert the acoustic signal of bowel sounds into an analog electrical signal, that is, the sensor 111 is used to realize the acoustic-electric conversion of the bowel sound signal. In some examples, the sensor 111 may be, for example, a pickup, a piezoelectric sensor or a MEMS (Microelectro Mechanical Systems, microelectromechanical system) sensor. This is because bowel sounds are transmitted through the surface of the abdomen, and sound transmission is carried out through the vibration of the medium, so the vibration of the abdominal surface is also a way of expressing the signal of bowel sounds, so pickups, piezoelectric sensors or MEMS sensors can be used as Sensor 111 to realize acoustic-electric conversion. Further, there may be one sensor 111, which may collect bowel sounds at a certain location. On the other hand, there may be multiple sensors 111, and multiple sensors 111 are placed in different positions to form a sensor array, so as to collect bowel sounds from different parts, so as to obtain bowel sound signals more effectively and accurately, and facilitate the recovery of bowel sounds. sound recognition.

In some examples, the bowel sound collection device 110 has a membrane-shaped stethoscope head, a bell-shaped stethoscope head or a dual-purpose stethoscope head to realize the collection and conduction of bowel sound signals, and the specific type can be selected according to medical needs. At the same time, when the acoustic signal of bowel sounds is transmitted, it can be directly connected to the conversion device (that is, the sensor 111 ) through the resonant cavity, or a tube or other components capable of acoustic conduction can be used. In addition, when using a conversion device such as a piezoelectric sensor, the resonant cavity can be deleted or adjusted according to needs, such as size, material and other characteristics, so as to be better used for bowel sound conduction.

The pre-filter 112 is used for filtering the analog electrical signal, and the pre-amplifier 113 is used for amplifying the analog electrical signal.

The A/D converter 114 is used to convert the filtered and amplified analog electrical signal into a digital signal.

The data transmission module 115 is connected to the information transmission network 120 and used to transmit the digital signal obtained above to the information transmission network 120 .

In addition, in practical applications, the bowel sound collection device 110 also includes a power supply 116 , a power management module 117 and a microcontroller 118 . The power supply 116 is used to supply power to the bowel sound collection device 110, the power management module 117 is used to manage the power supply 116 to provide a stable power supply, and to determine whether the power is sufficient, and the microcontroller 118 controls the overall circuit by a firmware program according to preset process runs.

In summary, referring to FIG. 3 , the bowel sound signal processing flow of the bowel sound collection device 110 is summarized as follows: the bowel sound signal is processed through three parts: acoustics, acoustic-electric conversion, and electricity. In the acoustic part, the diaphragm is close to the surface of the abdomen, and the resonance cavity is connected to the diaphragm, and the two transmit the acoustic signal of bowel sounds collected in the abdomen to the acoustic-electric conversion part. The acoustic-electric conversion part uses the sensor 111 to convert the acoustic signal of bowel sounds into an analog electrical signal. Under the control of the control circuit, the electrical part passes the analog electrical signal through pre-filtering, pre-amplification and analog-to-digital conversion to obtain a digital signal of bowel sounds, and finally sends the digital signal of bowel sounds to the information transmission network through the data transmission module 115 120.

As shown in Figure 4, in the embodiment of the present invention, the bowel sound recognition process is summarized as follows: first extract the features of bowel sounds, perform feature recognition according to the bowel sound feature library of various diseases, and finally obtain the results of disease screening and diagnosis . Figure 5 shows six common bowel sounds and their corresponding disease types, which differ in pitch, loudness, spectral range, and frequency of bowel sounds: for example, bowel sounds in patients with mechanical ileus Hyperactivity, bowel sounds with high frequency, loudness, and high-pitched pitch; patients with diarrhea have active bowel sounds, with high frequency but not high-pitched bowel sounds; postoperative patients have weakened bowel activity and weakened bowel sounds. These features will vary due to individual differences in patients, eating conditions, etc., and the bowel sound feature library of various diseases with a large amount of data used for identification can be used for more effective and accurate disease screening and diagnosis.

In the above embodiments, the diagnosis of the disease is performed after the bowel sound data is sent to the database. In fact, the algorithm for identifying and diagnosing bowel sounds can also be performed in real time, and the real-time algorithm can be run on a bowel sound recorder, network platform or database in the form of software, or can be calculated with an integrated hardware acceleration module. Can use DSP digital signal processing chip for identification. Real-time processing can provide a real-time reminder function, which can be applied to identify the patient's first exhaust, first bowel sounds, etc. after surgery, and assist doctors in judging the recovery effect, thereby reminding doctors to start the next step of treatment.

FIG. 6 is a functional diagram of the database of the data processing center 130 . The database obtains bowel sound signals from the information transmission network 120, runs a recognition algorithm according to the bowel sound feature library of various diseases, and stores the original bowel sound data, extracted features and diagnosis results. The database processes the obtained data, and can also perform statistical analysis on historical data to provide various types of data, such as the historical records of bowel sounds of a certain patient, the similarities and differences of bowel sounds of patients suffering from the same disease, and the same disease. Comparison of bowel sounds in patients with different diseases and different treatment methods. At the same time, the database also provides authorized users such as nurses, doctors on duty, and researchers to log in to complete the entry of basic patient information, record and modification of medical records, and at the same time, the latest disease research results, expert consultation opinions and other data can be input to update the intestinal tract of various diseases. The beep feature library makes the system continuously optimized and improved.

According to the bowel sound monitoring and recognition system of the embodiment of the present invention, the bowel sound signal is collected first, and then the signal is processed accordingly to output the bowel sound data, and finally the bowel sound data is compared and matched with the pre-stored disease bowel sound feature library, According to the bowel sound recognition algorithm, the bowel sound data is analyzed, and the disease identification, screening and diagnosis are carried out according to the analysis results. Therefore, the system can conveniently monitor, identify and diagnose diseases with pathological characteristics of bowel sounds (such as irritable bowel syndrome, colitis, intestinal obstruction, etc.), and the system is widely used, powerful, and has a good medical assistance. For example, the system can informatize and network bowel sound data to facilitate various authorized users to access and manage patient data, and the results recorded in the database can provide historical data comparison function; in addition, it can be used for both long-term monitoring and short-term monitoring Monitoring can be used for ward monitoring, physical examination and other purposes. At the same time, the feature library of bowel sounds for various diseases reduces the requirement for doctors with experience in diagnosing bowel sounds. By referring to and comparing bowel sounds of common diseases, it can assist in disease screening and diagnosis. In addition, the feature database of various diseases can be updated at any time to follow up with the latest medical research results.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limitations to the present invention. Variations, modifications, substitutions, and modifications to the above-described embodiments are possible within the scope of the present invention.

Claims (5)

1. a kind of gurgling sound monitors identifying system, it is characterised in that including：

Gurgling sound harvester, the gurgling sound harvester is used to gather gurgling sound acoustic signal, and by the borborygmus speech Learn signal and be converted to digitized electrical signal, to obtain gurgling sound data and transmit, the gurgling sound harvester has film Type auscultation head, bell auscultation head or dual-purpose auscultation head, to realize the collection and conduction of gurgling sound signal, the borborygmus phonematics letter Number conduction when, sensor is directly connected to by resonant cavity, the gurgling sound harvester includes：

Sensor, the sensor is used to the gurgling sound acoustic signal being converted to analog electrical signal,

Prefilter and preamplifier, the prefilter and preamplifier are used for respectively to the analog electrical signal It is filtered and enhanced processing,

A/D converter, the A/D converter by after filtering, amplification after analog electrical signal be converted to data signal,

Data transmission module, the data transmission module is connected with information transmission network, for the digital data transmission to be given Described information transmission network,

Power supply, the power supply is used to power for the gurgling sound harvester,

Power management module, the power management module is used to be managed the power supply to provide stable power supply, and sentences Power-off amount,

Microcontroller, the microcontroller is used to be controlled the integrated circuit of the gurgling sound harvester, to ensure Integrated circuit is stated according to default process flow operation；

Information transmission network, described information transmission network is used to transmit the gurgling sound data, and described information transmission network is distinguished The data of each gurgling sound harvester transmission, and the gurgling sound data point that multiple gurgling sound harvesters are obtained Supplementary biography is defeated by database；

Data processing centre, the data processing centre is used to receive and store, manage the gurgling sound data, and according to described The gurgling sound data are carried out by the gurgling sound feature database of the disease prestored in the minds of Data processing by gurgling sound recognizer Analysis identification, to carry out disease screening and diagnosis according to analysis recognition result, be specially：The gurgling sound feature include tone, Loudness, intestines motion frequency and spectral range, gurgling sound signal described in the gurgling sound recognizer extraction and analysis, obtain tone, Loudness, intestines motion frequency and spectral range, and disease screening and diagnosis, the gurgling sound are carried out by the gurgling sound feature database Feature database can update at any time, and follow up newest medical research achievement.

2. gurgling sound according to claim 1 monitors identifying system, it is characterised in that the sensor is sound pick-up, pressure Electric transducer or MEMS sensor.

3. gurgling sound according to claim 2 monitors identifying system, it is characterised in that the sensor is one or many It is individual.

4. gurgling sound according to claim 1 monitors identifying system, it is characterised in that the gurgling sound harvester is one It is individual or multiple.

5. gurgling sound according to claim 1 monitors identifying system, it is characterised in that described information transmission network is WIFI, GPRS/3G/4G mobile Internet or Ethernet.