公开(公告)号：SE7415675A

公开(公告)日：1975-09-08

申请号：SE7415675

申请日：1974-12-13

Applicant: SERVO CORP OF AMERICA

Inventor： GLAZAR A J

IPC: B61K9/00 ,  B60L3/00 ,  B61K9/06 ,  H03K5/24 ,  B61K9/04

CPC classification number: B61K9/06 ,  B60L3/00 ,  B60L2200/26 ,  H03K5/24

公开(公告)号：SE8304348L

公开(公告)日：1984-03-09

申请号：SE8304348

申请日：1983-08-10

Applicant: SERVO CORP OF AMERICA

Inventor： GLAZAR A J ,  VILLAR L F

IPC: G01V8/14 ,  G01B11/27 ,  B61K9/06

公开(公告)号：SE8304348D0

公开(公告)日：1983-08-10

申请号：SE8304348

申请日：1983-08-10

Applicant: SERVO CORP OF AMERICA

Inventor： GLAZAR A J ,  VILLAR L F

IPC: G01V8/14 ,  G01B11/27

公开(公告)号：SE7415675L

公开(公告)日：1975-09-08

申请号：SE7415675

申请日：1974-12-13

Applicant: SERVO CORP OF AMERICA

Inventor： GLAZAR A J

IPC: B61K9/00 ,  B60L3/00 ,  B61K9/06 ,  H03K5/24 ,  B61K9/04

Abstract: A two-level alarm monitor for use with a hot box detector system of the type having first and second sensors each associated with a rail of a track is provided. The monitor includes means connected to the outputs of the sensors for obtaining the difference between the output signals of the sensors and for comparing the difference alternately to first and second predetermined levels which may, for example, represent "warm" and "hot" differential alarm levels or differential alarm levels for friction and roller bearings. The outputs of the sensors are also alternately compared with third and fourth predetermined levels which could, for example, represent "warm" and "hot" absolute alarm levels or absolute alarm levels for friction or roller bearings. The output signals from the comparators are demultiplexed and utilized to generate an alarm signal in the event differential signals or absolute alarm signals exceed associated predetermined levels.