Special instantaneous power detection circuit for electro-acupuncture therapy apparatus, and design method of instantaneous power detection circuit

Abstract

The invention discloses a special instantaneous power detection circuit for an electro-acupuncture therapy apparatus, and a design method of the instantaneous power detection circuit. The instantaneous power detection circuit comprises a power supply module, a channel conversion module, a signal processing module and a value display module. The power supply module supplies power to the channel conversion module, the signal processing module and the value display module; an electro-acupuncture signal passes through the channel conversion channel firstly, and two to-be-detected signals are measured in real time, so that the effectiveness is guaranteed; and secondly, voltage values at all moments are obtained through the signal processing module, and the value display module converts a voltage peak-to-peak value and a current effective value obtained by the signal processing module into instantaneous power real-time display values. Meanwhile, according to the parameters including the voltage peak-to-peak value and the current effective value needed for detection of the electro-acupuncture therapy apparatus, a load resistor, a passive attenuation circuit, a voltage amplifying circuit,a second-order Butterworth filtering circuit, a level shifting circuit, a voltage effective value reading circuit and a factor-controllable voltage amplifying module circuit in the signal processing module are designed. The instantaneous power detection circuit is specially used for the instantaneous power detection of the electro-acupuncture therapy apparatus, and has the advantages of being accurate in detection, real-time, convenient and the like.

Description

Technical field [0001] The invention relates to an instantaneous power detection circuit and a design method, in particular to an instantaneous power detection circuit and a design method dedicated to an electroacupuncture therapeutic apparatus. Background technique [0002] In the case of a 250Ω load, the electro-acupuncture treatment instrument can generate 0-20V peak-to-peak voltage and 0-10mA current effective value. The accuracy of its value directly affects the life safety of patients, so accurate detection is essential. [0003] According to the market analysis report of the medical industry in 2018, electro-acupuncture treatment devices have been used in hospitals of the top three and above across the country to perform diagnosis and treatment operations such as treatment / adjuvant treatment for patients. However, there is no detection technology for the instantaneous power of electro-acupuncture treatment instruments in China or even in the world. As a result, the Nationa...

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Problems solved by technology

Testing institutions generally use oscilloscopes and multimeters to detect the waveforms output by electroacupuncture therapeutic instruments, but this method has the following disadvantages: first, the accuracy of oscilloscope detection of electroacupuncture peak-to-peak values ​​is not high, which cannot meet the traceability of electroacupuncture therapeutic instruments;

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