JPS5524650A - Vehicle speed detector - Google Patents

Vehicle speed detector

Info

Publication number
JPS5524650A
JPS5524650A JP9778578A JP9778578A JPS5524650A JP S5524650 A JPS5524650 A JP S5524650A JP 9778578 A JP9778578 A JP 9778578A JP 9778578 A JP9778578 A JP 9778578A JP S5524650 A JPS5524650 A JP S5524650A
Authority
JP
Japan
Prior art keywords
wheel
speed
diameter
signals
load
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.)
Pending
Application number
JP9778578A
Other languages
Japanese (ja)
Inventor
Masahiro Yasunami
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 JP9778578A priority Critical patent/JPS5524650A/en
Publication of JPS5524650A publication Critical patent/JPS5524650A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To highly accurately detect the speed of a wheel such as an elastic or rubber tire wheel by compensating the wheel rpm detecting signals is accordance with the fluctuation in the diameter of the elastic wheel.
CONSTITUTION: The rpm of a wheel 1, which corresponds to the speed of a vehicle, is detected by a speed detector 2 so that a speed-wheel diameter fluctuation pattern memory 16 is addressed to read out the signals corresponding to the fluctuation in the diameter of the elastic wheel corresponding to the speed. In accordance with the vehicle load signals of a load responding device 17, on the other hand, a load- wheel diameter pattern memory 18 is read out and is digitally converted by an A/D converter 19. Moreover, the compensation signals are generated through a wheel diameter compensating switch 4 due to the friction so that those signals are added by the adder 31 of a wheel diameter compensating circuit 3. If the wheel diameter compensation coefficient from the adder 31 is applied to the multiplier 32 of the circuit 3 to compensate the speed signals generated by the speed detector 2, the speed can be highly accurately detected even for a vehicle which has its wheel diameter varied by the elastic deformation of the rubber tire wheel due to the load and speed.
COPYRIGHT: (C)1980,JPO&Japio
JP9778578A 1978-08-12 1978-08-12 Vehicle speed detector Pending JPS5524650A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9778578A JPS5524650A (en) 1978-08-12 1978-08-12 Vehicle speed detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9778578A JPS5524650A (en) 1978-08-12 1978-08-12 Vehicle speed detector

Publications (1)

Publication Number Publication Date
JPS5524650A true JPS5524650A (en) 1980-02-21

Family

ID=14201461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9778578A Pending JPS5524650A (en) 1978-08-12 1978-08-12 Vehicle speed detector

Country Status (1)

Country Link
JP (1) JPS5524650A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58208668A (en) * 1982-05-31 1983-12-05 Stanley Electric Co Ltd Digital speed display device for automobile
JPS6182171A (en) * 1984-09-25 1986-04-25 Honda Motor Co Ltd Display device for mean vehicle speed
JPH02115172U (en) * 1989-03-02 1990-09-14

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58208668A (en) * 1982-05-31 1983-12-05 Stanley Electric Co Ltd Digital speed display device for automobile
JPS6157575B2 (en) * 1982-05-31 1986-12-08 Stanley Electric Co Ltd
JPS6182171A (en) * 1984-09-25 1986-04-25 Honda Motor Co Ltd Display device for mean vehicle speed
JPH02115172U (en) * 1989-03-02 1990-09-14

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