Management system and method of managing power feed mat

A management system, comprising:

• a plurality of power feed mats, wherein each of the plurality of power feed mats includes a plurality of power transmission coils;
• and
• a power supply module including
• a power supply circuit configured to supply electric power to each of the plurality of power transmission coils included in the plurality of power feed mats,
• a communication apparatus configured to communicate with each of the plurality of power feed mats placed at a prescribed location, and
• a monitoring computer configured to
• transmit a presence confirmation notification to each of the plurality of power feed mats, and
• in response to the monitoring computer not receiving a presence signal sent back from at least one of the plurality of power feed mats even when a time elapsed since transmission of the presence confirmation notification has exceeded a prescribed value, perform prescribed processing, the presence signal being a signal indicating that said at least one of the plurality of mats is present at the prescribed location, wherein
• the plurality of power feed mats includes:
• a subject mat;
• a first adjacent mat configured to monitor the subject mat;
• and
• a second adjacent mat configured to be monitored by the subject mat,
• the subject mat is configured to,
• in response to receiving a presence confirmation notification from the first adjacent mat while being present at the prescribed location, send a further presence signal back to the first adjacent mat, the further presence signal being a signal indicating that the subject mat is present at the prescribed location,
• in response to receiving the presence confirmation notification from the first adjacent mat while being not present at the prescribed location, not send the further presence signal back to the first adjacent mat,
• transmit a presence confirmation notification to the second adjacent mat, and
• in response to not receiving the further presence signal from the second adjacent mat even when a time elapsed since transmission of the presence confirmation notification to the second adjacent mat by the subject mat has exceeded a prescribed value, perform, through the controller, further prescribed processing,
• the plurality of power feed mats includes
• a first power feed mat,
• a second power feed mat,
• a third power feed mat, and
• a fourth power feed mat,
• in response to the first power feed mat operating as the subject mat,
• the fourth power feed mat operates as the first adjacent mat, and
• the second power feed mat operates as the second adjacent mat,
• in response to the second power feed mat operating as the subject mat,
• the first power feed mat operates as the first adjacent mat, and
• the third power feed mat operate as the second adjacent mat,
• in response to the third power feed mat operating as the subject mat,
• the second power feed mat operates as the first adjacent mat, and
• the fourth power feed mat operates as the second adjacent mat, and
• in response to the fourth power feed mat operating as the subject mat,
• the third power feed mat operates as the first adjacent mat, and
• the first power feed mat operates as the second adjacent mat.