To provide an improved system consisting of an apparatus, a method, and pressure sensors for measuring values from a lying human body and solving problems on a conventional mattress easy to break down with higher maintenance cost, in the mattress having a number of sensors for measuring compression loads working on a human body lying on the mattress to prevent bedsores.

The problem are solved by the improved system for acquiring data of a measurement, wherein the apparatus provided with the sensors arranged in regions of a chest/sacra, a dedicated type of the sensors, and the method for measuring and continuously recording values measured by the sensors are provided.