Impedance given circuit
A circuit and interference circuit technology, applied in impedance matching network, medical science, diagnosis, etc., can solve problems such as heartbeat interference, large difference, and failure to output without consideration, and achieve the effect of convenient factory inspection
Pending Publication Date: 2022-04-22
SHENZHEN COMEN MEDICAL INSTR
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Problems solved by technology
[0002] With the development of the medical industry, life support medical equipment is becoming more and more diverse, especially monitoring devices for measuring the human respiratory system, such as monitors; In the verified circuit, the addition of heartbeat interference is not considered, resulting in a large difference between the impedance output to the monitoring device and the actual situation, and it is impossible to output an impedance close to the actual human body to the monitoring device
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[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0049] This application is used to test monitoring devices that have not been put into use, that is, monitors used to detect human breathing; when the human body is breathing, the impedance of a specific part of the human body will change with the change of breathing, that is to say, the detected part is equivalent to A resistor with a certain impedance; the monitor in the prior art is connected to different parts of the human body through three wires, one of which ...
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The invention discloses an impedance given circuit. The impedance given circuit comprises a control circuit and a signal conversion circuit, wherein the control circuit is used for continuously outputting different first voltage signals and different second voltage signals to a heartbeat interference circuit and the signal conversion circuit respectively; the heartbeat interference circuit is used for converting the first voltage signal into a sine wave voltage signal and outputting the sine wave voltage signal to the signal conversion circuit; the signal conversion circuit is used for converting the sine wave voltage signal into a first current signal, converting the second voltage signal into a second current signal and transmitting the first current signal and the second current signal to the impedance generation circuit; the impedance generation circuit is used for generating first impedance and second impedance according to the first current signal and the second current signal, the heartbeat interference circuit is introduced, the heartbeat interference circuit is closer to the actual condition of the human body during breathing, and the first impedance and the second impedance are closer to the impedance generated by the human body during detection; convenience is provided for factory detection of the monitoring device, and impedance close to the human body can be output to simulate the breathing state of the human body.
Description
technical field [0001] The invention relates to the technical field of impedance setting, in particular to an impedance setting circuit. Background technique [0002] With the development of the medical industry, life support medical equipment is becoming more and more diverse, especially monitoring devices for measuring the human respiratory system, such as monitors; In the verified circuit, heartbeat interference is not considered, resulting in a large difference between the impedance output to the monitoring device and the actual situation, and the impedance close to the actual human body cannot be output to the monitoring device. Contents of the invention [0003] Based on this, it is necessary to propose an impedance given circuit to solve the above problems. [0004] An impedance given circuit comprising: [0005] A control circuit, connected to the heartbeat interference circuit and the signal conversion circuit, for continuously outputting different first voltage...
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IPC IPC(8): H03H11/28A61B5/08
CPCH03H11/28A61B5/0809
Inventor 朱明亮熊超卜祥南尹鹏
Owner SHENZHEN COMEN MEDICAL INSTR