Electronic device e.g. mobile phone, has microcontroller for controlling whether variation of pressure in casing is proportional to variation of temperature in casing for determining whether casing has sufficient degree of sealing

摘要

#CMT# #/CMT# The device (1) has an automatic leak detecting unit for detecting leak of gas across a casing (2) and comprising a microcontroller (5) connected with internal and external pressure sensors (3, 4). The microcontroller with the pressure sensors is placed inside the casing. The microcontroller controls whether variation of the pressure in the casing is proportional to variation of temperature in the casing based on measurements performed by the sensors for determining whether the casing has sufficient degree of sealing. #CMT# : #/CMT# An independent claim is also included for a method for automatic detection of leak of an electronic device. #CMT#USE : #/CMT# Electronic device e.g. mobile phone or watch (all claimed) such as wristwatch or diving watch. #CMT#ADVANTAGE : #/CMT# The automatic leak detecting unit enables determining the sufficient degree of sealing of the casing of the electronic device in a simple and inexpensive manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a simplified schematic block diagram of an electronic device with an automatic leak detecting unit. '(Drawing includes non-English language text)' 1 : Electronic device 2 : Casing 3 : Internal pressure sensor 4 : External pressure sensor 5 : Microcontroller.