Control system, surface, and control device

A control system comprising:

• a plurality of wireless measuring units provided in a surface, each of which wireless measuring units, when receiving a radio signal, uses the radio signal as an energy source to measure a physical quantity, and generates and sends a radio signal having an attribute reflecting the measured physical quantity;
• a transmitter which transmits a radio signal to the wireless measuring units;
• a receiver which receives radio signals from the wireless measuring units;
• a storage unit which stores position data of the wireless measuring units in accordance with identification data of the wireless measuring units;
• a calculation unit which calculates physical quantities on the basis of the radio signals received by the receiver;
• a recognition unit which recognizes a distribution of the physical quantities calculated by the calculation unit with reference to position data stored in accordance with identification data specified by the radio signals received by the receiver;
• an identifying unit which identifies a state of an object on the surface on the basis of the distribution of the physical quantities recognized by the recognition unit;
• and
• a control unit which performs a control depending on the state of the object identified by the identifying unit.