JPS6479602A - Dimension measuring apparatus - Google Patents
Dimension measuring apparatusInfo
- Publication number
- JPS6479602A JPS6479602A JP23824887A JP23824887A JPS6479602A JP S6479602 A JPS6479602 A JP S6479602A JP 23824887 A JP23824887 A JP 23824887A JP 23824887 A JP23824887 A JP 23824887A JP S6479602 A JPS6479602 A JP S6479602A
- Authority
- JP
- Japan
- Prior art keywords
- volt
- work
- output
- offset value
- adder
- 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
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
PURPOSE:To take out only deviation regardless of the size of a work, by providing an adder permitting the input of the output of a detector and that of a four-quadrant multiplying type D/A converter and regulating an offset value so as to bring said outputs to zero. CONSTITUTION:This apparatus consists of a setting device 3 for setting an offset value and an adder 5 permitting the input of the output of an oscillator 1 and that of a four-quadrant multiplying type D/A converter 4 inputting said offset value. When the output voltage due to the deflection of the core of a detector 2 is set to Va, for example, when the dimension of a work 2G is 500mm, the output voltage Va varies by the quantity corresponding to the deviation of the work 2G as shown by a drawing (a) and, therefore, the offset value is set to -Va volt so as to bring said voltage Va to 0 volt to be inputted to the adder 5. Whereupon, the characteristic curve shown by a drawing (a) falls and the output corresponding to the deviation of the work 2G is displaced in the vicinity of 0 volt. Therefore, since about + or -0.5mm may be considered with respect to the irregularity of the work 2G, the output is deflected in the vicinity of 0 volt and, even when an A/D converter of about 10 volt is used, accuracy of about 1mum can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23824887A JPS6479602A (en) | 1987-09-22 | 1987-09-22 | Dimension measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23824887A JPS6479602A (en) | 1987-09-22 | 1987-09-22 | Dimension measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6479602A true JPS6479602A (en) | 1989-03-24 |
Family
ID=17027351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23824887A Pending JPS6479602A (en) | 1987-09-22 | 1987-09-22 | Dimension measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6479602A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952361A (en) * | 1982-09-16 | 1984-03-26 | Fuji Photo Film Co Ltd | Arithmetic system for picture signal processing |
| JPS5957111A (en) * | 1982-09-27 | 1984-04-02 | Hino Motors Ltd | Apparatus for displaying compensation value of displacement sensor |
-
1987
- 1987-09-22 JP JP23824887A patent/JPS6479602A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5952361A (en) * | 1982-09-16 | 1984-03-26 | Fuji Photo Film Co Ltd | Arithmetic system for picture signal processing |
| JPS5957111A (en) * | 1982-09-27 | 1984-04-02 | Hino Motors Ltd | Apparatus for displaying compensation value of displacement sensor |
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