Patent ID: 8700817

Claim:
A detection device configured to detect a serving time of a super capacitor mounted in a power-disconnected storage card for the power-disconnected storage card to store data packets and an amount of the data packets configured for being stored during the serving time, the power-disconnected storage card comprising a memory, and the detection device comprising: a power supply unit connected to the super capacitor, wherein the power supply unit comprises a switch tube, a relay and a power source, the relay comprises a first control terminal, an input terminal and an output terminal, the switch tube comprises a base electrode electrically connected to the input pin of the controller, an emitter electrode electrically connected to the ground, and a collector electrode electrically connected to first control terminal, and the relay is electrically connected to the power source and the super capacitor of the power-disconnected storage card; a controller connected to the power supply unit, and configured to control the power supply unit to charge the super capacitor, wherein comprises an input pin and an output pin; a storage unit configured to store a plurality of the data packets; and a detection unit comprising a charge notification module, a data notification module and a time module, wherein the charge notification module is configured to generate a first notification signal to the time module when the super capacitor is completely charged, the data notification module is configured to generate a second notification signal to the time module when the storage unit transmits the data packet the memory, and the time module is configured to record time when the memory starts to store the data packet from the storage unit and until that the data packet is completely stored in the memory from the storage unit as the serving time of a super capacitor according to the first notification signal and the second notification signal.