CN213345710U - Multifunctional digital auscultation device - Google Patents
Multifunctional digital auscultation device Download PDFInfo
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- CN213345710U CN213345710U CN202021300465.6U CN202021300465U CN213345710U CN 213345710 U CN213345710 U CN 213345710U CN 202021300465 U CN202021300465 U CN 202021300465U CN 213345710 U CN213345710 U CN 213345710U
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Abstract
The utility model discloses a multifunctional digital auscultation device, which is applicable to the field of medical equipment. The power supply module is connected with the power supply interface of the amplifying circuit, the band-pass filter and the analog-to-digital conversion module.
Description
Technical Field
The utility model relates to the field of medical equipment, specifically speaking relates to a multi-functional digital auscultation device.
Background
A stethoscope is a medical device used to collect and display sounds in the human or animal body. Most of the current common stethoscopes are non-digital devices, and doctors judge whether the sound signals collected by the stethoscopes are abnormal or not and calculate the heart rate according to experience through the sound signals collected by the stethoscopes in the human veins, the arteries, the heart (10-600Hz), the lungs (100-1500Hz), the intestines (10-1500Hz) and the like. However, experience and hearing dependence may lead to poor auscultation quality, failure to represent all information, and possible misdiagnosis. The auscultation frequency of the existing digital auscultation device is certain, for example, the frequency range of lung sounds is 100-1500Hz, the measurement range is 10-1500Hz, and the interference noise in a signal area improves the complexity of data processing and reduces the calculation precision.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved in the utility model is how to provide a multi-functional digital auscultation device of many heart sounds of high accuracy, wireless control, audible diagnosis.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
the utility model provides a multi-functional digital auscultation device, includes band-pass filter, amplifier circuit, data selector and power module, amplifier circuit's output is connected to band-pass filter's input, amplifier circuit's input connection sensor's output, the sensor is used for gathering heart sound signal, the data input part of 100Hz high pass filter, 600Hz low pass filter, 250Hz low pass filter and data selector is connected to band-pass filter's output, the data input part of data selector is connected to 100Hz high pass filter, 600Hz low pass filter, 250Hz low pass filter's output, the input of audio module and analog-to-digital conversion module is connected to data selector's output, and amplifier circuit, band-pass filter, analog-to-digital conversion module's power source is connected to power module.
Furthermore, the address input end of the data selector is connected with the Bluetooth controller and used for controlling equipment to wirelessly control the auscultation frequency; the output end of the analog-to-digital conversion module is connected with the input end of the Bluetooth controller.
Further, the amplifying circuit includes an operational amplifier, a forward input end of the operational amplifier is connected to one end of a resistor R1, an output end of the sensor and one end of a resistor R2, the other end of the resistor R1 is connected to a power supply, the other end of the resistor R2 is grounded, an inverting input end of the operational amplifier is connected to one ends of a resistor R3, a resistor R4 and a capacitor C2, the other end of the resistor R3 is connected to a capacitor C1 and then grounded, the other end of the capacitor C2 and the other end of the resistor R4 are connected to an output end of the operational amplifier, an output end of the operational amplifier is connected to one end of a resistor R5, the other end of the resistor R5 is connected to one end of a capacitor C4 of a capacitor C3, the other end of the capacitor C3 is grounded, and the other end of the capacitor C4 outputs.
Further, the data selector is a 1-out-of-4 digital selector.
Further, the band-pass filter is a 10Hz-1.5KHz band-pass filter.
Further, the model of the operational amplifier is TLC 2272.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: the utility model discloses a data selector can switch effective signal frequency range according to using the scene, reduces the interference noise in the special signal area, effectively reduces the complexity of the function of making an uproar falls in controlgear, reduces the computation time to the computational accuracy has been improved. The utility model discloses a controlgear is long-range to carry out the function selection, compares in selecting the operation more convenient through the hardware button, portable simultaneously.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a block diagram of the present invention;
FIG. 2 is an enlarged circuit diagram of the present invention;
fig. 3 is a flow chart of function selection according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in figure 1, the utility model discloses a 10Hz-1.5kHz band pass filter, amplifier circuit's output is connected to band pass filter's input, amplifier circuit's output is connected to amplifier circuit's input, piezoelectric sensor is used for gathering heart sound signal, 100Hz high pass filter, 600Hz low pass filter, 250Hz low pass filter and the data input end of 4 selection 1 data selector are connected to band pass filter's output, the data input end of data selector is connected to 100Hz high pass filter, 600Hz low pass filter, 250Hz low pass filter's output, the input of audio module and analog-to-digital conversion module is connected to data selector's output, bluetooth controller is connected to data selector's address input end for controlgear wireless control auscultation frequency, and power module connects amplifier circuit, a, Band-pass filter, analog-to-digital conversion module and the power interface of bluetooth controller. The audio module is used for playing the collected data.
In an embodiment of the present invention, as shown in table 1, the user can select four auscultation functions through the control software on the control device: intestinal sound auscultation, fetal sound auscultation, heart sound auscultation and lung sound auscultation. A Bluetooth controller GPIO1 interface and a GPIO0 interface corresponding to the intestinal sound auscultation function are 0, a data selector is CH0, and the auscultation frequency is 10Hz-1.5 KHz; the Bluetooth controller GPIO1 interface and GPIO0 interface corresponding to the fetal heart auscultation function are respectively 0 and 1, the data selector is CH1, and the auscultation frequency is 10Hz-250 Hz; the interface of a Bluetooth controller GPIO1 and the interface of a GPIO0 corresponding to the function of auscultation of heart sounds are respectively 1 and 0, the data selector is CH2, and the auscultation frequency is 10Hz-600 Hz; the interface of the Bluetooth controller GPIO1 and the interface of the GPIO0 corresponding to the function of auscultation of the lung sounds are respectively 1 and 1, the data selector is CH3, and the auscultation frequency is 100Hz-1.5 KHz.
Table 1: function selection and auscultation frequency
In one embodiment of the present invention, as shown in fig. 2, the amplification circuit comprises an operational amplifier of type TLC2272, the positive input end of the operational amplifier is connected with one end of the resistor R1, the output end of the sensor and one end of the resistor R2, the other end of the resistor R1 is connected with a power supply, the other end of the resistor R2 is grounded, the inverting input end of the operational amplifier is connected with one end of the resistor R3, the resistor R4 and the capacitor C2, the other end of the resistor R3 is connected with the capacitor C1 and then grounded, the other end of the capacitor C2 and the other end of the resistor R4 are connected with the output end of the operational amplifier, the output end of the operational amplifier is connected with one end of a resistor R5, the other end of the resistor R5 is connected with one end of a capacitor C4 of a capacitor C3, the other end of the capacitor C3 is grounded, and the other end of the capacitor C4 outputs an amplified signal and is grounded after being connected with the resistor R5.
As shown in fig. 3, the function selection flow chart of the present invention is that, after entering the main program, the function configuration is performed inside the bluetooth, whether a valid APP function command is received is checked, and if not, the step of function configuration inside the bluetooth is returned; if so, checking whether intestinal sound collection is performed, if so, selecting a CH0 interface by the data selector to perform data collection, and finishing the collection; if not, checking whether the fetal heart is collected, if so, selecting a CH1 interface by the data selector to collect data, and finishing the collection; if not, checking whether the heart sound is collected, if so, selecting a CH2 interface by the data selector to collect data, and finishing the collection; if not, the data selector selects a CH3 interface to collect data, and the collection is finished.
The utility model discloses an in the embodiment, controlgear is the cell-phone, carries out the function through cell-phone APP and selects: heart sound auscultation, lung sound auscultation, intestinal sound auscultation and fetal heart auscultation. Cell-phone APP passes through the bluetooth and connects the auscultation device, requires to select suitable auscultation frequency according to the auscultation, and auscultation information passes through bluetooth transmission to cell-phone APP simultaneously, through handling the back demonstration, save rhythm of the heart information, and the earphone can directly be auscultated still to the auscultation device simultaneously.
Claims (6)
1. A multifunctional digital auscultation device is characterized in that: including band-pass filter, amplifier circuit, data selector and power module, amplifier circuit's output is connected to band-pass filter's input, amplifier circuit's input connection sensor's output, the sensor is used for gathering the heart sound signal, 100Hz high pass filter, 600Hz low pass filter, 250Hz low pass filter and data selector's data input end is connected to band-pass filter's output, the data input part of data selector is connected to 100Hz high pass filter, 600Hz low pass filter, 250Hz low pass filter's output, audio module and analog-to-digital conversion module's input is connected to data selector's output, and amplifier circuit, band-pass filter, analog-to-digital conversion module's power source is connected to power module.
2. The multifunctional digital auscultation device of claim 1, wherein: the address input end of the data selector is connected with the Bluetooth controller and used for controlling equipment to wirelessly control the auscultation frequency; the output end of the analog-to-digital conversion module is connected with the input end of the Bluetooth controller.
3. The multifunctional digital auscultation device of claim 1, wherein: the amplifying circuit comprises an operational amplifier, wherein the forward input end of the operational amplifier is connected with one end of a resistor R1, the output end of a sensor and one end of a resistor R2, the other end of the resistor R1 is connected with a power supply, the other end of the resistor R2 is grounded, the inverting input end of the operational amplifier is connected with one ends of a resistor R3, a resistor R4 and a capacitor C2, the other end of the resistor R3 is connected with a capacitor C1 and then grounded, the other end of the capacitor C2 and the other end of the resistor R4 are connected with the output end of the operational amplifier, the output end of the operational amplifier is connected with one end of a resistor R5, the other end of the resistor R5 is connected with one end of a capacitor C4 of a capacitor C3, the other end of the capacitor C3 is grounded, and the other end of the capacitor C.
4. The multifunctional digital auscultation device of claim 1, wherein: the data selector is a 1-from-4 digital selector.
5. The multifunctional digital auscultation device of claim 1, wherein: the band-pass filter is a 10Hz-1.5KHz band-pass filter.
6. The multifunctional digital auscultation device of claim 3, wherein: the model of the operational amplifier is TLC 2272.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021300465.6U CN213345710U (en) | 2020-07-06 | 2020-07-06 | Multifunctional digital auscultation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021300465.6U CN213345710U (en) | 2020-07-06 | 2020-07-06 | Multifunctional digital auscultation device |
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| Publication Number | Publication Date |
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| CN213345710U true CN213345710U (en) | 2021-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021300465.6U Active CN213345710U (en) | 2020-07-06 | 2020-07-06 | Multifunctional digital auscultation device |
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| CN (1) | CN213345710U (en) |
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- 2020-07-06 CN CN202021300465.6U patent/CN213345710U/en active Active
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