TH8774U - A system for measuring the body's energy expenditure from cycling. - Google Patents

Abstract

DC60 (22/11/56) This invention relates to a system for measuring the amount of energy burned by the body from cycling, consisting of a transmitter (1), a sensor (2), a keypad (3), a microcontroller (10), and a bicycle. The microcontroller (8) has a microprocessor (8) that processes data to indicate the amount of energy burned by the body from cycling. This is based on data obtained by considering the relationship between the force acting on the bicycle pedals and the transmission through the bicycle's mechanism, which consists of the pedals, crankset, chain, front sprocket, rear sprocket, front wheel, and rear wheel until the point of contact between the rear wheel of the bicycle and the rear axle and the road, taking into account the friction of the road surface to obtain the true amount of energy burned from cycling. This invention relates to a system for measuring the amount of energy burned by the body from cycling, consisting of a microcontroller (1) with a timer/controller circuit and a microprocessor (8) for processing data. The program calculates energy expenditure based on data received from sensors and input buttons. It processes this data using an equation, considering the mechanics of cycling, and displays the result on a screen. This system measures energy expenditure by considering the force applied to the pedals and transmitted through the cycling mechanism until the rear wheel contacts the road, thus determining the true amount of energy burned during cycling.

Claims (1)

1. The system measures the body's energy expenditure from cycling. It consists of a microprocessor electrically connected to a speed sensor via a transmission cable. The speed sensor consists of a transmitter mounted on the wheel or spokes of the bicycle and a receiver mounted on the fork of the bicycle. When the transmitter completes one revolution past the receiver, the measured number of revolutions is recorded in the microprocessor to calculate the distance covered by the bicycle. There are several input buttons for inputting data to the microprocessor, which are electrically connected to the control board, and the control board is electrically connected to the microprocessor. There is a display screen electrically connected to the microprocessor to show the time, speed, distance, and body energy expenditure from cycling. It has the following characteristics: The input buttons consist of a button (1) for switching the device on and off, and a button (2) for adding the weight of the cyclist. (3) Press button to decrease the weight of the cyclist. (4) Press button to confirm the data value. (5) Press button to start displaying data on the display screen. And (6) Press button to stop displaying data on the display screen. The microprocessor calculates the work (W) done by cycling and converts it into the amount of energy burned in calories (Calorie C) as in the equation W=0.239 U x S X g x where U is the coefficient of static friction, S is the distance the bicycle travels, g is the acceleration due to gravity, r1 is the radius of the front chainring, r0 is the length of the crank arm, m is the mass of the cyclist, and n is the mass of the bicycle.