Light guide, storage battery and mains supply combined lighting method and system and medium

The invention provides a light guide, storage battery and mains supply combined lighting method and system and a medium, and the method comprises the steps: receiving a main gate signal of a vehicle entering and exiting a parking lot and a main elevator signal of a person entering and exiting an elevator, judging whether the person is located in the parking lot or not according to the main gate signal and the main elevator signal, and if not, generating a light turn-off instruction; if yes, acquiring current time, judging whether the current time falls into a preset time period representing daytime or not, if yes, generating a light guide illumination instruction, and using light guide illumination equipment for illumination based on the light guide illumination instruction; if not, generating an opening instruction representing that the shielding plate is opened, obtaining the actual electric quantity of the storage battery, judging whether the actual electric quantity is greater than the preset electric qua