▎ 摘　　要

NOVELTY - Synchronous detection for a continuous train of rectangular pulses with harmonic elimination, comprises: (a) using rectangular pulse sequences to obtain an arbitrary structure of the disturbances, thus improving the signal-to-noise ratio; (b) equaling the content of positive and negative pulses within the sequence of the modulation signal; and (c) performing calculations of the modulation signal spectrum for different amounts of cycles i.e. 1, 2, 4, 8, 16 and 32. Obtaining nano frequency of carbon-graphene for treatment of diseases, comprises obtaining the asset, dehydrating or freeze-drying, generating carbon by increasing temperature, verify ionic receptor, giving load if necessary externally, grinding, mixing the resultant with polymers, giving shape as needed, placing device in skin contact, and removing. USE - The method is useful for synchronous detection for continuous train of rectangular pulses with harmonic elimination. ADVANTAGE - The method provides different nanotubes frequencies of a charged plant or active biological powder that is a stimulus for the treatment of diseases that is captured by its nano frequency and to provide a fixed and returned effect without the intake of any remedy thanks to this frequency effect. DETAILED DESCRIPTION - Synchronous detection for a continuous train of rectangular pulses with harmonic elimination, comprises: (a) using rectangular pulse sequences to obtain an arbitrary structure of the disturbances, thus improving the signal-to-noise ratio; (b) equaling the content of positive and negative pulses within the sequence of the modulation signal; and (c) performing calculations of the modulation signal spectrum for different amounts of cycles i.e. 1, 2, 4, 8, 16 and 32. Obtaining nano frequency of carbon-graphene for treatment of diseases, comprises obtaining the asset, dehydrating or freeze-drying, generating carbon by increasing temperature, verify ionic receptor, giving load if necessary externally, grinding, mixing the resultant with polymers, giving shape as needed, placing device in skin contact, and removing. The spectrum of amplitudes in frequency for the two sequences (1 and 2) is presented in figure 3 of the specification, in which it is observed that when the useful cycle of the rectangular pulses is properly varied, the elimination of unwanted harmonics is achieved. The analysis of the different periodic signals as excitation currents (or modulation functions), showed that for the two types of rectangular pulse sequences. With the results obtained, the architecture of the electronic equipment was determined to generate the pulse train sequences. A prototype measurement system comprises: an electric field generator for producing rectangular signals with variable useful cycle at a frequency of 1 Hz and a current of up to 1 A; an amplifier stage with automatic drift control, composed of two sections, with a total gain of 10000; a stage of digital analog conversion and data multiplexing that groups the digital analog converters of 24-bit sigma-δ type and the channel selection multiplexers; a stage of control and pre-processing of data responsible to communicate with all electronic elements verifying the correct operation and status of the same, initialize all the elements of the system, and calibrate the measurement system and perform the synchronization of system operation; a data storage stage; and a personal computer, where the graphical interface is stored for the processing and visualization of the results obtained.