Referring back to FIG. 2A, the sensor devices 160 collects the EV-related data 11. For example, the sensor data can be collected using sensor devices 160 including, but are not limited to: an accelerometer, a global positioning system (GPS) receiver, a velocity sensor, a motion sensor, infrared light sensors, radar, laser radar, cameras, a gyroscope, or the like. The collected EV-related data 11 may be stored in the memory 120 or other storage (not shown).

In addition, the memory 120 includes program instructions executable by the processor 110 to perform functions or operations of the emergency subscriber device 100 described in the present disclosure. The processor 110 reads the stored data which have been collected from the sensor devices 160 and processes to generate messages that will be transmitted to the remote management server 20 through the transmitter 132 of the communication device 130.

The communication device 130 may be implemented to support at least one of the above-mentioned communication techniques.

The input device 140 can be, but is not limited to: a keyboard, a touch screen, an audio input system, a voice recognition system, or the like. The output device 150 can be, but is not limited to: a screen, a speaker, a light, a siren, a visual system, an audio system, or the like.