Title:
接近検知システム
Document Type and Number:
Japanese Patent JP5835577
Kind Code:
B2
Abstract:
Provided is a proximity detection system which is capable of changing a level of alarm depending on a distance between a worker and an apparatus, and setting an alarm-generating distance in an apparatus-side unit. The proximity detection system comprises a magnetic field detecting function-equipped RFID tag attachable to a worker, and a distance detection control unit installable in a self-propelled apparatus. The magnetic field detecting function-equipped RFID tag is configured to be selectively set between a plurality of levels of magnetic field detecting sensitivity, and comprises means to intermittently transmit setup magnetic field detecting sensitivity data and magnetic field detection data. The distance detection control unit is configured to output different levels of alarm according to the data received from the RFID tag.
Inventors:
Kikuzo Sawada
Application Number:
JP2012004316A
Publication Date:
December 24, 2015
Filing Date:
January 12, 2012
Export Citation:
Assignee:
Yoshikawa Industry Co., Ltd.
International Classes:
G01V3/08; E02F9/24; E02F9/26; G01S13/74; G08B21/02
Domestic Patent References:
| JP7168987A | ||||
| JP2005291723A | ||||
| JP200665703A | ||||
| JP2007225448A | ||||
| JP2003346228A |
Attorney, Agent or Firm:
Masu Kobori
Takato Tsutsumi
Takato Tsutsumi