| abstract |
The invention relates to a method for obtaining heart rate and respiratory rate from a traditional electronic scale, using only the weight sensors provided in the scale and without any action being exerted on the user, whereby the user simply has to stand on the scale. Moreover, it is not necessary for the user to remove his/her shoes, to grip any element or to position him/herself on the scale platform in a pre-determined manner. The information is obtained through the electronic processing of the signal from the weight sensors (1) built into the electronic scale. The high-frequency components of the signal are separated using a high-pass filter (2), amplified with a very high gain (3) and processed (5) in order to detect heart rate and respiratory rate, while a weight amplifier (4) having a much lower gain than that of the above-mentioned amplifier (3) obtains a signal proportional to weight, which the processor (5) can store (6), display (7) or communicate (8) together with or independently of the heart rate and the respiratory rate. |