Abstract: The present disclosure relates to a grounding monitoring device, method, system and computer readable storage medium, which relates to the field of coal mine safety. The device includes: a measurement power source for supplying power to the grounding monitoring device; a resistance measurement device connected between the measurement power source and a grounding electrode, the resistance measurement device, the measurement power source and the grounding electrode forming a current detection circuit via the ground, wherein a resistance of a grounding resistor is determined according to a current flowing through the grounding electrode in the current detection circuit to determine a monitoring result.
Type:
Grant
Filed:
February 2, 2018
Date of Patent:
July 13, 2021
Assignee:
Shanxi Quan'an New Technology Development Co., Ltd.
Abstract: The present disclosure relates to a grounding monitoring device, method, system and computer readable storage medium, which relates to the field of coal mine safety. The device includes: a measurement power source for supplying power to the grounding monitoring device; a resistance measurement device connected between the measurement power source and a grounding electrode, the resistance measurement device, the measurement power source and the grounding electrode forming a current detection circuit via the ground, wherein a resistance of a grounding resistor is determined according to a current flowing through the grounding electrode in the current detection circuit to determine a monitoring result.
Type:
Application
Filed:
February 2, 2018
Publication date:
December 12, 2019
Applicants:
Shanxi Quan'an New Technology Development Co., Ltd., Shanxi Quan'an New Technology Development Co., Ltd.
Abstract: A pre-cover-opening power-off method, comprising the steps of: (a) fixing a bolt casing to a bolt; (b) connecting a motion sensor to a safety protecting and monitoring unit in a wired or wireless manner; and (c) activating the motion sensor to send out a command to permit power delivery for an electrical equipment to operate, and when the bolt casing is taken off, the motion sensor is activated to send out a command to cut off a power supply for the electrical equipment or give out an alarm.
Type:
Grant
Filed:
November 24, 2014
Date of Patent:
December 1, 2015
Assignee:
Shanxi Quan'an New Technology Development Co., Ltd.
Abstract: A pre-cover-opening power-off method, comprising the steps of: (a) fixing a bolt casing to a bolt; (b) connecting a motion sensor to a safety protecting and monitoring unit in a wired or wireless manner; and (c) activating the motion sensor to send out a command to permit power delivery for an electrical equipment to operate, and when the bolt casing is taken off, the motion sensor is activated to send out a command to cut off a power supply for the electrical equipment or give out an alarm.
Type:
Grant
Filed:
April 22, 2009
Date of Patent:
December 2, 2014
Assignee:
Shanxi Quan'an New Technology Development Co., Ltd.