Title:
ALARM SYSTEM FOR HIGH PLACE WORK SITE
Document Type and Number:
Japanese Patent JP2021068116
Kind Code:
A
Abstract:
To provide an alarm system for a high place work site, that is inexpensive and is capable of giving an alarm that a fall-preventive tool should be used for an operator at the high place work site, without adding any modification or the like to an existing fall-preventive tool.SOLUTION: An alarm system for a high place work site comprises a master unit 100 arranged at a high place work site, and a slave unit 200 attached by an operator wearing a fall-preventive tool 1. The master unit 100 comprises a radio transmitter 110 that transmits predetermined identification information. The slave unit 200 comprises: a radio receiver 210 for detecting identification information transmitted from the master unit 100; a hook latching member 202 for latching a hook 34 of a lanyard 30; a hook detection switch 220 for detecting that the hook 34 is latched to the hook latching member 202; and an alarm control part 230 for issuing a predetermined alarm, only when the radio receiver 210 detects the identification information, and the hook detection switch 220 detects latching of the hook 34.SELECTED DRAWING: Figure 3
Inventors:
UCHIDA MITSUYA
CHEN HANG
HIRANO TAKAFUMI
CHEN HANG
HIRANO TAKAFUMI
Application Number:
JP2019192143A
Publication Date:
April 30, 2021
Filing Date:
October 21, 2019
Export Citation:
Assignee:
PROP KK
International Classes:
G08B21/02; A62B35/00
Attorney, Agent or Firm:
Atenda International Patent Office