Patent ID: 9590433
Date: 2017-03-07
CPC Classifications: G01N,G06F,H01M,H02J,H04B,H04M,Y02E

Claim:
1. A terminal, comprising: a circuit board, a battery and a housing, wherein the battery provides a power source for the circuit board, the housing is provided with a transparent medium used for reflecting light, and the circuit board comprises: a detection module, a control module and a power-off switch, wherein, the detection module emits light towards the transparent medium, and receives the light reflected by the transparent medium, and converts the light into electric signal data and sends the electric signal data to the control module; the control module, after receiving the electric signal data, compares the electric signal data with preset data and triggers the power-off switch when a difference value between the electric signal data and the preset data reaches a preset threshold, wherein, the preset data are the electric signal data when the light is totally reflected by the transparent medium, and the preset threshold is preset according to the light and the transparent medium; and the power-off switch, after being triggered, disconnects a connection between the circuit board and the battery.