JPS5546803A - Train speed level detector - Google Patents

Train speed level detector

Info

Publication number
JPS5546803A
JPS5546803A JP12079079A JP12079079A JPS5546803A JP S5546803 A JPS5546803 A JP S5546803A JP 12079079 A JP12079079 A JP 12079079A JP 12079079 A JP12079079 A JP 12079079A JP S5546803 A JPS5546803 A JP S5546803A
Authority
JP
Japan
Prior art keywords
output
frequency
comparator
train speed
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP12079079A
Other languages
Japanese (ja)
Other versions
JPS5628081B2 (en
Inventor
Masayori Yamamura
Eiichi Toyoda
Akiyoshi Hayashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12079079A priority Critical patent/JPS5546803A/en
Publication of JPS5546803A publication Critical patent/JPS5546803A/en
Publication of JPS5628081B2 publication Critical patent/JPS5628081B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To simplify this device, and to reduce cost, by decreasing the locations of frequency comparators by mounting a means, which compares the second frequency among three frequency signals and speed frequency signals, and a means, which changes over the second frequency to the first and third frequency according to any of the output and compares them.
CONSTITUTION: When the speed Vx of a train is not less than H=5km/h, the output of a comparator 1 is in ON, the output is input to an AND circuit 4 and a pattern Ix is put out. In this case, the output is also input to an inverter 3, and disconnection detecting frequency G for obtaining the output of OFF is not put out. The pattern output Ix of the AND circuit 4 and the train speed Vx are compared by means of a comparator 2, and the output is in ON when the pattern is larger. When the exclusive-or of the output of the comparator 2 and the output of the comparator 1 is calculated, the output of an OR circuit 6 is in OFF, and a brake is in OFF at that time. Thus, the levels of train speed frequency can be detected by using two frequency comparators.
COPYRIGHT: (C)1980,JPO&Japio
JP12079079A 1979-09-21 1979-09-21 Train speed level detector Granted JPS5546803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12079079A JPS5546803A (en) 1979-09-21 1979-09-21 Train speed level detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12079079A JPS5546803A (en) 1979-09-21 1979-09-21 Train speed level detector

Publications (2)

Publication Number Publication Date
JPS5546803A true JPS5546803A (en) 1980-04-02
JPS5628081B2 JPS5628081B2 (en) 1981-06-29

Family

ID=14795056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12079079A Granted JPS5546803A (en) 1979-09-21 1979-09-21 Train speed level detector

Country Status (1)

Country Link
JP (1) JPS5546803A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019075418A1 (en) 2017-10-12 2019-04-18 Avery Dennison Corporation Low outgassing clean adhesive

Also Published As

Publication number Publication date
JPS5628081B2 (en) 1981-06-29

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