Patents Assigned to Shanxi Quan'an New Technology Development Co., Ltd.
  • Patent number: 11061079
    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.
    Inventor: Chunping Guo
  • Publication number: 20190377022
    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.
    Inventor: Chunping GUO
  • Patent number: 9200751
    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.
    Inventors: Chunping Guo, Xiaoyan Guo, Xiaopeng Guo
  • Patent number: 8902075
    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.
    Inventors: Chunping Guo, Xiaoyan Guo, Xiaopeng Guo