An imaging tomography apparatus has electronic components provided to operate the tomography apparatus, with at least one of the electronic components exhibiting a power consumption in high power operation that is significantly increased relative to power consumption in normal operation. For this configuration, the control method of an LPI lamp for an LPI vehicle includes checking whether an LPG switch that stops fuel supply to an engine has been turned on or off, and switching the LPI lamp on and off, when it is determined that the LPG switch has been turned off, in an LPI vehicle in an ignition-on state. Each state zone is spread with one micro-unit and equally divided into multiple hypothetical sections. Alternatively, the processed Internet phone signal is sent to the server and the signal is sent to the PBX after analog to digital conversion of the gateway box. A plurality of accessories are configured to activate and deactivate responsive to the controller to discharge the battery, while a generator is responsive to the controller to charge the battery so that the controller can determine the battery capacity value.