Method for improving sensitivity of stethoscope
A sensitivity, stethoscope technology, applied in the field of stethoscope, can solve the weak and other problems, achieve the effect of eliminating noise, simple operation, and improving sensitivity
Inactive Publication Date: 2015-02-25
GUANGXI UNIV
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Problems solved by technology
However, most of the existing stethoscopes on the market are mechanical stethoscopes. The sound that can be heard by mechanical stethoscopes is relatively weak, which is a test of the doctor's ears, and its application has certain limitations.
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[0007] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0008] like figure 1 As shown, a method for improving the sensitivity of a stethoscope includes installing an electronic circuit board in the stethoscope, installing a battery module 7, an ultra-high-sensitivity microphone receiving module 2, a preamplifier module 3, and a secondary audio amplifier module 5 on the electronic circuit board , a gain control module 4 and an audio output module 9. The ultra-high-sensitivity microphone receiving module 2 is connected to the diaphragm vibration collector 1 at the front end of the stethoscope to complete the signal conversion and transmit the signal to the pre-amplification module 3 and the secondary audio amplification module 5 in sequence through the access interface 8 to realize signal amplification. Then the sound signal is output through the audio output module 9 and the output...
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The invention relates to a method for improving sensitivity of a stethoscope. The method includes the steps that an electronic circuit board is installed in the stethoscope, and provided with a battery module, an ultrahigh-sensitivity microphone receiving module, a pre-amplification module, a secondary audio amplification module, a gain control module and an audio output module. The ultrahigh-sensitivity microphone receiving module is connected with a diaphragm vibration collector at the forefront end of the stethoscope to complete signal conversion, signals are sequentially transmitted to the pre-amplification module and the secondary audio amplification module through an access interface and are amplified, the sound signals are output through the audio output module and an output interface, the battery module is connected with the pre-amplification module and the secondary audio amplification module, and the gain control module and the pre-amplification module are connected to automatically adjust gains. The method is easy to operate, the signals received by the stethoscope can be clear, the gains can be automatically adjusted, and noise is eliminated better.
Description
technical field [0001] The invention relates to the technical field of stethoscopes, in particular to a method for improving the sensitivity of stethoscopes. Background technique [0002] The effect of the stethoscope is very important, and it is an essential tool for doctors to listen to the beating of the heart and fetal sounds. The main working principle is to use the vibration generated by the beating of the heart to drive the diaphragm at the front end of the stethoscope to vibrate, and the diaphragm vibrates to produce sound. However, most of the existing stethoscopes on the market are mechanical stethoscopes. The sound that can be heard by mechanical stethoscopes is relatively weak, which tests the ears of doctors very much, and its application has certain limitations. Contents of the invention [0003] The technical problem to be solved by the invention is to provide a method for improving the sensitivity of the stethoscope. [0004] The technical scheme adopted ...
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IPC IPC(8): A61B7/04
Inventor 程小宁
Owner GUANGXI UNIV