CN202386677U - Multi-channel lung sound imaging device - Google Patents
Multi-channel lung sound imaging device Download PDFInfo
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- CN202386677U CN202386677U CN2011205525845U CN201120552584U CN202386677U CN 202386677 U CN202386677 U CN 202386677U CN 2011205525845 U CN2011205525845 U CN 2011205525845U CN 201120552584 U CN201120552584 U CN 201120552584U CN 202386677 U CN202386677 U CN 202386677U
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Abstract
The utility model discloses a multi-channel lung sound imaging device. The multi-channel lung sound imaging device comprises a multi-path lung sound sensor, an amplifying circuit, an A/D (analog/digital) converter, a low-pass filter, a data acquisition unit, a digital signal processing unit, a flash memory, a control unit, a power supply unit and a computer, wherein the signal output of the multi-path lung sound sensor is accessed to the amplifying circuit; the signal output from the amplifying circuit is accessed to the A/D converter; the signal output from the A/D converter is accessed to the low-pass filter; the signal output from the low-pass filter is accessed to the input end of the data acquisition unit for signal acquisition; the digital signal processing unit is used for processing the data of the flash memory; the signal output from the digital signal processing unit is accessed to the input end of the control unit; and the output end of the control unit is connected with the computer. According to the imaging device, the sound characteristics of different parts of the lung when breathing are displayed visually, so that the influence of subjective judgment of a doctor is overcome; and furthermore low frequency sound signals which people cannot hear can be displayed, thereby compensating misdiagnose caused bythe hearing.
Description
Technical field
This utility model relates to medical instruments field, particularly a kind of multichannel lungs sound imaging device.
Background technology
Lungs sound is reflection pulmonary's physiology and important indicator of pathological characters.Because the current industrial high speed development causes air pollution more and more serious; The lung sickness rate has trend of rising year by year.Wherein chronic obstructive pulmonary disease is called the No.1 killer of human health.
In the various detection meanss to pneumonopathy, auscultation of lung is diagnosis lung disease and a kind of common method of understanding pulmonary function.But stethoscope has auditory function but does not have visual function at present, though stethoscope has been done bigger improvement on outward appearance, principle, performance, still is difficult to catch some faint but very important acoustical signals that lungs send; Moreover because the responsive band limits of people's ear arrives 2kHz at 1kHz, and the lungs sound signal frequency range arrives 3kHz at 20Hz, adds doctor's audition, attention and empirical influence, often omits a little important pathological signals, causes the doctor can't make right judgement.
The utility model content
The shortcoming that the purpose of this utility model is to overcome prior art provides a kind of multichannel lungs sound imaging device with visual function with not enough.
In order to achieve the above object, this utility model adopts following technical scheme:
A kind of multichannel lungs sound imaging device; Comprise multichannel lungs sound pick off, amplifying circuit, A/D converter, low pass filter, data acquisition unit, digital signal processing unit, flash memory, control unit, power supply unit, computer, the signal output of described multichannel lungs sound pick off is linked into amplifying circuit; The signal of amplifying circuit output is linked into A/D converter; The signal of A/D converter output is linked into low pass filter; The signal of low pass filter output is linked into the input of data acquisition unit; Digital signal processing unit control data collecting unit carries out signals collecting; Digital signal processing unit is handled the flash memory data; The signal of digital signal processing unit output is received the control unit input; The control unit outfan is connected with computer.
Preferably, said multichannel lungs sound pick off adopts piezoelectric film sensor.
Preferably, the amplification range of said amplifying circuit is 0 to 5V.
Preferably, said A/D converter is 12 A/D converters.
Preferably, the signal sampling frequency of said data acquisition unit is that 7kHz is to 12kHz.
Preferably, the cut-off frequency of said low pass filter is that 800Hz is to 1200Hz.
Preferably, said control unit is the network interface card controller, and said network interface card controller is connected to computer through outfan through Ethernet.
Preferably, said Ethernet adopts ICP/IP protocol.
Preferably, said control unit is the USB control chip, adopts the USB2.0 communications protocol between said USB control chip and the computer.
This utility model has following advantage and effect with respect to prior art:
1, this utility model can intuitively show the sound characteristic that produces when pulmonary's different parts is breathed; Thereby overcome the subjective influence of doctor, and can show the low-frequency sound signal that people's ear can't be heard, remedied the mistaken diagnosis that audition possibly cause.
2, this utility model can be convenient to patient's check to storage of lungs sound image and playback.
3, this utility model adopts the inspection of human body non-intrusion type, avoids X ray to the human injury.
Description of drawings
Fig. 1 is the frame diagram of this utility model embodiment 1;
Fig. 2 is this utility model lungs sound transducer arrangements sketch map;
Fig. 3 is the frame diagram of this utility model embodiment 2.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing this utility model is described in further detail, but the embodiment of this utility model is not limited thereto.
As shown in Figure 1; A kind of multichannel lungs sound of present embodiment imaging device; Comprise multichannel lungs sound pick off, amplifying circuit, A/D converter, low pass filter, data acquisition unit, digital signal processing unit, flash memory, network interface card controller, power supply unit, computer, the signal output of described multichannel lungs sound pick off is linked into amplifying circuit; The signal of amplifying circuit output is linked into A/D converter; The signal of A/D converter output is linked into low pass filter; The signal of low pass filter output is linked into the input of data acquisition unit; Digital signal processing unit control data collecting unit carries out signals collecting; Digital signal processing unit is handled the flash memory data; The signal of digital signal processing unit output is received network interface card controller input; The network interface card controller output end is received computer through netting twine.Said network interface card controller is connected to computer through outfan through Ethernet, and Ethernet adopts ICP/IP protocol.Said multichannel lungs sound pick off adopts piezoelectric film sensor; The amplification range of said amplifying circuit is 0 to 5V; Said A/D converter is 12 A/D converters; The signal sampling frequency of said data acquisition unit is 10kHz; The cut-off frequency of said low pass filter is 1kHz.
The working method of present embodiment is following: the lungs sound pick off is selected piezoelectric film sensor.Energized initialization whole system.As shown in Figure 2, the doctor is adsorbed in patient's breast back surface according to patient's physiological structure with multichannel lungs sound pick off 1.The patient carries out respiratory movement according to doctor's guidance; The multichannel lungs sound pick off 1 that is adsorbed in human body surface changes into the signal of telecommunication with the acoustical signal that the human body surface transmission comes, and every road signal is amplified between the 0-5V through amplifier; Signal after the amplification is sampled through sampling unit through 12 A/D conversions then, and sample frequency is 7kHz; The back signal of sampling is through six rank Butterworth LPF, and cut-off frequency removes quantizing noise at 800Hz; Digital signal processing unit (DSP) control data collecting unit, with the multi-path digital signal storage in flash memory; Digital signal processing unit reads data in the flash memory simultaneously, adopts Wavelet Transformation Algorithm, each road signal is carried out lungs sound separate; After the multiple signals separation finishes, utilize the Lagrange's interpolation algorithm that multiple signals are interpolated to picture; View data sends to computer through network; The lungs sound image that the doctor produces according to patient respiratory is made judgement and is provided the treatment scheme.
Embodiment 2
Present embodiment is except that following characteristics, and further feature is the same with embodiment 1: as shown in Figure 3, said control unit is the USB control chip, and the USB control chip is connected with computer, adopts the USB2.0 communications protocol between said USB control chip and the computer; The signal sampling frequency of data acquisition unit is 12kHz, and the cut-off frequency of low pass filter is 1200Hz.
The foregoing description is this utility model preferred implementation; But the embodiment of this utility model is not restricted to the described embodiments; Other any do not deviate from change, the modification done under spirit and the principle of this utility model, substitutes, combination, simplify; All should be the substitute mode of equivalence, be included within the protection domain of this utility model.
Claims (9)
1. multichannel lungs sound imaging device; It is characterized in that; Comprise multichannel lungs sound pick off, amplifying circuit, A/D converter, low pass filter, data acquisition unit, digital signal processing unit, flash memory, control unit, power supply unit, computer, the signal output of described multichannel lungs sound pick off is linked into amplifying circuit; The signal of amplifying circuit output is linked into A/D converter; The signal of A/D converter output is linked into low pass filter; The signal of low pass filter output is linked into the input of data acquisition unit; Digital signal processing unit control data collecting unit carries out signals collecting; Digital signal processing unit is handled the flash memory data; The signal of digital signal processing unit output is received the control unit input; The control unit outfan is connected with computer.
2. multichannel lungs sound imaging device according to claim 1 is characterized in that, said multichannel lungs sound pick off adopts piezoelectric film sensor.
3. multichannel lungs sound imaging device according to claim 1 is characterized in that, the amplification range of said amplifying circuit is 0 to 5V.
4. multichannel lungs sound imaging device according to claim 1 is characterized in that, said A/D converter is 12 A/D converters.
5. multichannel lungs sound imaging device according to claim 1 is characterized in that, the signal sampling frequency range 7kHz of said data acquisition unit is to 12kHz.
6. multichannel lungs sound imaging device according to claim 1 is characterized in that, the cut-off frequency of said low pass filter is that 800Hz is to 1200Hz.
7. multichannel lungs sound imaging device according to claim 1 is characterized in that said control unit is the network interface card controller, and said network interface card controller is connected to computer through outfan through Ethernet.
8. multichannel lungs sound imaging device according to claim 7 is characterized in that, said Ethernet adopts ICP/IP protocol.
9. multichannel lungs sound imaging device according to claim 1 is characterized in that said control unit is the USB control chip, adopts the USB2.0 communications protocol between said USB control chip and the computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205525845U CN202386677U (en) | 2011-12-26 | 2011-12-26 | Multi-channel lung sound imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205525845U CN202386677U (en) | 2011-12-26 | 2011-12-26 | Multi-channel lung sound imaging device |
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| Publication Number | Publication Date |
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| CN202386677U true CN202386677U (en) | 2012-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205525845U Expired - Fee Related CN202386677U (en) | 2011-12-26 | 2011-12-26 | Multi-channel lung sound imaging device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105816199A (en) * | 2016-05-24 | 2016-08-03 | 刘国栋 | Intelligent lung sound image detector |
| CN105997134A (en) * | 2016-06-20 | 2016-10-12 | 刘国栋 | Multichannel lung sound signal collection system and method |
| CN107260208A (en) * | 2017-07-10 | 2017-10-20 | 山东朗朗智能科技发展有限公司 | Lungs sound figure machine monitor method and system |
| CN107260207A (en) * | 2017-07-10 | 2017-10-20 | 山东朗朗智能科技发展有限公司 | Lungs sound figure machine and lungs sound figure machine system |
-
2011
- 2011-12-26 CN CN2011205525845U patent/CN202386677U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105816199A (en) * | 2016-05-24 | 2016-08-03 | 刘国栋 | Intelligent lung sound image detector |
| CN105997134A (en) * | 2016-06-20 | 2016-10-12 | 刘国栋 | Multichannel lung sound signal collection system and method |
| CN107260208A (en) * | 2017-07-10 | 2017-10-20 | 山东朗朗智能科技发展有限公司 | Lungs sound figure machine monitor method and system |
| CN107260207A (en) * | 2017-07-10 | 2017-10-20 | 山东朗朗智能科技发展有限公司 | Lungs sound figure machine and lungs sound figure machine system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20121226 |