Low-power-consumption heart rate monitor and monitoring method thereof

Abstract

The invention discloses a low-power-consumption heart rate monitor and a monitoring method thereof. The low-power-consumption heart rate monitor comprises a three-operational-amplifier five-stage low-power-consumption electrocardio extracting circuit, a single chip microcomputer, a display module, a low-power-consumption Bluetooth chip module and a moving terminal. The ultralow-power-consumption single chip microcomputer based on MSP430F5529 uses a differential method to detect R waves to realize heart rate calculation and display by extracting I-lead electrocardio signals, can display wave forms and give alarms and transmits data and electrocardio images through a serial port or Bluetooth. The low-power-consumption heart rate monitor can be powered by a battery of 3V-4.5V, and the three-operational-amplifier five-stage low-power-consumption electrocardio extracting circuit and the Bluetooth 4.0BLE module which are in active and passive combining are adopted, thereby being low in power consumption. Test results show that electrocardio signals extracted by the low-power-consumption heart rate monitor are low in distortion, and the monitor is accurate in heart rate measuring and calculating and has good popularization and utilization prospect.

Description

technical field [0001] The invention relates to the field of low-power heart rate monitors, in particular to a low-power heart rate monitor and a monitoring method thereof. Background technique [0002] Heart rate monitoring is commonly used in daily life and clinical practice, and it has important uses in exercise intensity detection, physical fitness detection, and disease diagnosis. ECG waveforms have greater clinical value. If the heart rate and ECG data can be collected for long-term analysis, it will have greater clinical and scientific value. However, since the ECG signal is a periodic weak signal with a low signal-to-noise ratio, it is easily affected by instruments, human bodies, etc. during the acquisition process, and is mixed with strong power frequency interference, so a signal extraction with a certain extraction capability is required. circuit. [0003] The existing commercially available heart rate detectors often have a single function and lack some p...

AI Technical Summary

Problems solved by technology

However, since the ECG signal is a periodic weak signal with a low signal-to-noise ratio, it is easily affected by instruments, human bodies, etc. during the acquisition process, and mixed with strong power frequency interference, so a signal extraction with a certain extraction ability is required circuit

[0003] Existing commercially available heart rate detectors often have a single function and lack some practical additional functions other than heart rate; the data can only be displayed but not transmitted or recorded, and the scope of application is narrow; if more functions are implemented, the power consumption will easily be biased. high

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