Electronic car park management system

An electronic system for monitoring the occupancy state of a group of car parking spaces, to ascertain only two states of that group;

• either that it is completely full or that there is one or more vacant spaces, comprising;
• an array of light sensors;
• which are electronic semiconductor components each with positive and negative leads;
• all electrically connected together in parallel sequence with all the positive leads connected to one signal wire and all the negative leads connected to another signal wire forming top and bottom parallel rails;
• with the top and bottom parallel rails connected to the collector and base respectively of a transistor;
• with each of these light sensors physically located within the bounds of a separate car space such that there is at least one light sensor in each monitored car space in the group;
• and that the light sensors are located on the floor of each of the car spaces positioned under any motor vehicles parked within the relevant car spaces;
• and further comprising a single electronic detection means for determining the state of the array of light sensors via the transistor collector and emitter leads;
• to indicate the full or vacant state of the group of car spaces, wherein the state of all light sensors in that group are monitored by the singular detection means simultaneously;
• and the voltage requirement for the light sensors is supplied via the collector and emitter of the transistor;
• wherein said detection means has the capability to switch other devices accordingly.