Current and Frequency Measurement in Electrostimulator Devices

Abstract

Measurement involves comparing a quantity with a standard using measuring instruments. The TENS (Transcutaneous Electrical Nerve Stimulation) measurement device is used to assess output frequency, output current, and display signal waveforms. This TENS device adheres to specific standards to ensure its effective use. The research objective is to design a current and frequency measurement tool for TENS that adheres to defined standards. This facilitates both low-frequency and high-frequency electrical shock therapy, ensuring output alignment with established norms. The advantage of this research lies in the system’s ability to perform direct frequency and current measurements without requiring electrical installation, as the device created is portable and operates independently of a 220V power supply. The study employs an ACS712 current sensor to detect TENS output current. Key components include the ATmega328 microcontroller as the central control unit for issuing commands to the device, a 3.2-inch TFT Nextion LCD for displaying TENS output current and frequency numerically, and a battery charging module for recharging depleted batteries. This research represents a pure experiment, and no prior researcher has developed this specific device. Future studies could explore additional parameters, expand signal forms to include dual waveforms, incorporate voltage indicators for safety, and add a battery power indicator to monitor remaining charge.