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...

AI Technical Summary

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; secondly, The multimeter can measure the effective value of the current of the electroacupuncture therapy device, but it cannot detect the instantaneous power of the electroacupuncture therapy device in real time

In the case of an external 250Ω load, the existing oscilloscopes and multimeters cannot guarantee the accuracy and effectiveness when detecting this type of waveform

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