Thermal management system for electronic device

A local processing and data module of an augmented reality or virtual reality system, the local processing and data module comprising:

• a portable housing configured to be worn or carried by a user of the augmented reality or virtual reality system;
• a temperature sensor configured to detect an over-temperature condition of the local processing and data module, the temperature sensor comprising an alert output terminal;
• a power supply that supplies electrical power to a power input of the temperature sensor;
• and
• a first transistor in electrical communication with the alert output terminal such that, when the alert output signal is activated by the temperature sensor, the first transistor causes the local processing and data module to shut down.