JPS54162580A - Corrector of speedometer - Google Patents
Corrector of speedometerInfo
- Publication number
- JPS54162580A JPS54162580A JP7133378A JP7133378A JPS54162580A JP S54162580 A JPS54162580 A JP S54162580A JP 7133378 A JP7133378 A JP 7133378A JP 7133378 A JP7133378 A JP 7133378A JP S54162580 A JPS54162580 A JP S54162580A
- Authority
- JP
- Japan
- Prior art keywords
- radio waves
- speedometer
- speeds
- reflected
- antenna
- 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
Links
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
PURPOSE: To improve the accuracy of correction by using the speed of the measuring car having been measured through the utilization of Doppler effect of radio waves.
CONSTITUTION: An antenna 7 for emitting radio waves and receiving the radio waves having reflected from the building 10 on the ground, a speed measuring device 8 which measures the speeds of the measuring device 8 which measures the speeds of the measuring car 4 from the differences between the emitted radio waves and the reflected radio waves from Doppler effect and an output unit 9 of the results of measurement are mounted to the measuring car 4 which is provided with a corrected speedometer 6. The correction of the speedometer 6 is accomplished by emitting radio waves from the antenna 7 while letting the measuring car 4 advance toward the building 10, receiving the reflected waves thereof in the antenna 7, sending the same to the speed measuring device 8, calculating the speeds of the measuring car 4 by the Doppler effect from the deviations of the frequency of the reflected waves, displaying the same and comparing the value displayed and the value indicated by the speedometer 6. Thereby, the error-free correction of high accuracy such as the one when the rotating speeds of a standard wheel are used may be accomplished.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7133378A JPS54162580A (en) | 1978-06-13 | 1978-06-13 | Corrector of speedometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7133378A JPS54162580A (en) | 1978-06-13 | 1978-06-13 | Corrector of speedometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54162580A true JPS54162580A (en) | 1979-12-24 |
Family
ID=13457491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7133378A Pending JPS54162580A (en) | 1978-06-13 | 1978-06-13 | Corrector of speedometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54162580A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193468A (en) * | 1982-04-22 | 1983-11-11 | Matsushita Electric Ind Co Ltd | Calibrator for vehicle speed sensor |
| JP2005140598A (en) * | 2003-11-05 | 2005-06-02 | Isuzu Motors Ltd | Vehicle speed detector |
| WO2006132538A1 (en) * | 2005-06-07 | 2006-12-14 | Modulprodukter As | Method and system for demonstrating discrepancies in speedometers in vehicles |
-
1978
- 1978-06-13 JP JP7133378A patent/JPS54162580A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58193468A (en) * | 1982-04-22 | 1983-11-11 | Matsushita Electric Ind Co Ltd | Calibrator for vehicle speed sensor |
| JPS6326353B2 (en) * | 1982-04-22 | 1988-05-30 | Matsushita Electric Ind Co Ltd | |
| JP2005140598A (en) * | 2003-11-05 | 2005-06-02 | Isuzu Motors Ltd | Vehicle speed detector |
| WO2006132538A1 (en) * | 2005-06-07 | 2006-12-14 | Modulprodukter As | Method and system for demonstrating discrepancies in speedometers in vehicles |
| JP2008542787A (en) * | 2005-06-07 | 2008-11-27 | モドゥルプロドゥクテル アクティエセルスカブ | Method and system for indicating displacement of speedometer in vehicle |
| US7782182B2 (en) | 2005-06-07 | 2010-08-24 | Modulprodukter As | Method and system for demonstrating discrepancies in speedometers in vehicles |
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