Equipment, system and method provide herein for monitoring that the individual of health parameters includes that circumference is converted into an individual in vivo. A kind of monitoring device, including Extendible members are configured to securely surround main part to be connected thereunto with sensor module. Sensor module is configured as obtaining and sending the main part of circumference measurement. Sensor module, which can be further configured into acquisition and send, measures one or more additional parameters. Relevant monitoring system includes the monitoring device and mobile computing device. Mobile computing device be configured as at least partly with: the measurement of processing week identifies and analyzes the main part of any circumference, and generates corresponding alarm output. Method is also provided by executing various devices and system.
