Patent ID: 7652580

Claim:
A battlefield simulation apparatus, comprising: a participant unit carried by a participant, the participant unit including an evaluation unit; and a hit detection sensor module carried by the participant for detecting hits by a light beam on the participant during battlefield simulations, said hit detection module comprising: a housing having a front and a back; an infrared sensor mounted in an opening in the front of the housing for sensing infrared light and generating signals based on the sensed infrared light; a short-range radio transmitter disposed inside the housing and associated with the infrared sensor, said short-range radio transmitter transmitting signals outside the housing from the infrared sensor to the evaluation unit of the participant unit, wherein the infrared sensor is connected wireless via a radio network to the evaluation unit of the participant unit; an electrical voltage source for supplying electrical capacity to the hit detection sensor module, wherein the electrical voltage source is disposed in the housing and includes a solar cell and a storage battery, wherein the storage battery is chargeable by the solar cell; and means for attaching the hit detection sensor module to the participant.