GB1300814A – Improvements in speed measuring devices
– Google Patents
GB1300814A – Improvements in speed measuring devices
– Google Patents
Improvements in speed measuring devices
Info
Publication number
GB1300814A
GB1300814A
GB1291070A
GB1291070A
GB1300814A
GB 1300814 A
GB1300814 A
GB 1300814A
GB 1291070 A
GB1291070 A
GB 1291070A
GB 1291070 A
GB1291070 A
GB 1291070A
GB 1300814 A
GB1300814 A
GB 1300814A
Authority
GB
United Kingdom
Prior art keywords
transistor
capacitor
pulse
voltage
differentiated
Prior art date
1969-03-18
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.)
Expired
Application number
GB1291070A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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.)
1969-03-18
Filing date
1970-03-18
Publication date
1972-12-20
1970-03-18
Application filed by Robert Bosch GmbH
filed
Critical
Robert Bosch GmbH
1972-12-20
Publication of GB1300814A
publication
Critical
patent/GB1300814A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B60—VEHICLES IN GENERAL
B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
G—PHYSICS
G01—MEASURING; TESTING
G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
G01P3/42—Devices characterised by the use of electric or magnetic means
G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
Abstract
1300814 Measuring speed electrically; measuring duration ROBERT BOSCH GmbH 18 March 1970 [18 March 1969] 12910/70 Headings G1N and G1U [Also in Divisions G4 and H3] The angular speed of a shaft is determined by a slotted ferro-magnetic disc 13, Fig. 4, on the shaft, rotating between coils 11, 12 of an oscillator comprising transistor T10, oscillating at a frequency determined by coil 12 and capacitor C12. The resulting bursts of oscillations are fed via D10 to a monostable multi-vibrator 20, producing square pulses each corresponding to one oscillatory burst from transistor T10, and each making a transistor T13 conductive to pass a constant current to charge capacitor C14 to a voltage indicative of the pulse duration. This voltage is fed to a capacitor C17 via electronic switch 33 comprising transistor T16, which is made conductive by the differentiated leading edge of each square pulse, and transistor T15, which is made conductive by the differentiated trailing edge of each square pulse. The leading edge of each square pulse is also differentiated by capacitor C18 and resistor R20 to make transistor D11 conductive, whereby capacitor C14 is discharged, to be recharged for the duration of the pulse. The voltage on capacitor C17, representing the frequency of the pulses from multi-vibrator 20 and the angular speed of disc 13, is indicated on a meter 18. In a modification Fig. 3 (not shown), the number of oscillations in each burst is counted and converted to an analogue voltage.
GB1291070A
1969-03-18
1970-03-18
Improvements in speed measuring devices
Expired
GB1300814A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE19691913517
DE1913517A1
(en)
1969-03-18
1969-03-18
Arrangement for contactless speed measurement
Publications (1)
Publication Number
Publication Date
GB1300814A
true
GB1300814A
(en)
1972-12-20
Family
ID=5728395
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1291070A
Expired
GB1300814A
(en)
1969-03-18
1970-03-18
Improvements in speed measuring devices
Country Status (3)
Country
Link
DE
(1)
DE1913517A1
(en)
FR
(1)
FR2031026A5
(en)
GB
(1)
GB1300814A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4259637A
(en)
1977-07-22
1981-03-31
Ransome Hoffmann Pollard Limited
Mechanical assemblies employing sensing means for sensing motion or position
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2648021C3
(en)
*
1976-10-23
1983-02-17
Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen
Circuit arrangement for speed measurement and distance counting, in particular for tachographs
GB1566396A
(en)
*
1978-03-29
1980-04-30
Hughes Microelectronics Ltd
Electrical displacement transducer
DE19725675B4
(en)
*
1997-06-18
2007-07-12
Bayerische Motoren Werke Ag
Use of a substantially U-shaped staple for attachment of lines
1969
1969-03-18
DE
DE19691913517
patent/DE1913517A1/en
active
Pending
1969-12-30
FR
FR6945494A
patent/FR2031026A5/fr
not_active
Expired
1970
1970-03-18
GB
GB1291070A
patent/GB1300814A/en
not_active
Expired
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4259637A
(en)
1977-07-22
1981-03-31
Ransome Hoffmann Pollard Limited
Mechanical assemblies employing sensing means for sensing motion or position
Also Published As
Publication number
Publication date
DE1913517A1
(en)
1970-10-08
FR2031026A5
(en)
1970-11-13
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Legal Events
Date
Code
Title
Description
1973-05-02
PS
Patent sealed
1974-10-09
PLNP
Patent lapsed through nonpayment of renewal fees
