SHORT-CIRCUIT PREVENTION DETECTION DEVICE AND USER TERMINAL

Title:

SHORT-CIRCUIT PREVENTION DETECTION DEVICE AND USER TERMINAL

Document Type and Number:

WIPO Patent Application WO/2017/185311

Kind Code:

A1

Abstract:

A short-circuit prevention detection device (10) and a user terminal (20). The short-circuit prevention detection device comprises a probe (11), a detection resistor (RS), a switching circuit (13) and a detection circuit (15). The probe (11) is provided at intervals with a power source port (Vbus) of the user terminal (20) and a ground port (GND), and at least a part of the probe (11) is located between the power source port (Vbus) and the ground port (GND). A first end of the detection resistor (RS) is electrically connected to a power source circuit (21) of the user terminal (20), and a second end of the detection resistor (RS) is electrically connected to the probe (11). The switching circuit (13) is electrically connected to the first end of the detection resistor (RS) and a processor (23) of the user terminal (20), and is used for switching to be grounded or not grounded under the control of the processor (23). The detection circuit (15) is electrically connected to two ends of the detection resistor (RS) and the processor (23) and is used for triggering the processor (23) to control the user terminal (20) to give a short-circuit alarm or turn off the power source circuit (21) when the short-circuit current is not zero. The short-circuit prevention detection device (10) can prevent the user terminal (20) from being damaged due to short circuit.

Inventors:

LI DELIANG (CN)
QIAN ZEXU (CN)

Application Number:

PCT/CN2016/080566

Publication Date:

November 02, 2017

Filing Date:

April 28, 2016

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HUAWEI TECH CO LTD (CN)

International Classes:

G01R31/02

Foreign References:

CN104067184A	2014-09-24
CN103871340A	2014-06-18
CN105182154A	2015-12-23
CN101945534A	2011-01-12
US20100033883A1	2010-02-11
CN105322397A	2016-02-10
CN101738562A	2010-06-16
CN203772995U	2014-08-13
CN201383666Y	2010-01-13

Other References: