Measuring device and method for measuring physiological data of a mammal

A measuring device for measuring physiological data of a mammal for determining at least one condition parameter of the mammal, comprising:

• a measuring unit, to be worn by the mammal, with a first and second module configured to be arranged opposite a skin part of the mammal, which first module comprises a light source for generating light and which second module comprises a sensor for measuring an intensity of a fraction of the light received via that skin part and for delivering a measuring signal which is indicative of the measured value of the intensity, wherein the first module and second module are designed to be arranged mutually on opposite external sides of the skin part, wherein the measuring device is designed for pulsewise activating the light source, wherein the measuring signal is indicative of the value of the intensity measured during the pulsewise activation, wherein the measuring device is furthermore provided with synchronization means for synchronously activating the light source and the second module, wherein the synchronization means comprises a controller, an energy transmitter which is part of one of the first and the second module, and a detector which is part of the other one of the first and the second module, wherein in an operating condition the energy transmitter pulsewise generates an electromagnetic field responsive to the controller, and the detector receives this field and generates therefrom a supply voltage for use in that other module.