JPS55136903A - Device for measuring size - Google Patents
Device for measuring sizeInfo
- Publication number
- JPS55136903A JPS55136903A JP4498779A JP4498779A JPS55136903A JP S55136903 A JPS55136903 A JP S55136903A JP 4498779 A JP4498779 A JP 4498779A JP 4498779 A JP4498779 A JP 4498779A JP S55136903 A JPS55136903 A JP S55136903A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- produces
- circuit
- article
- sizing
- 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
Abstract
PURPOSE: To accurately measure the size of an article by stabilizing the sizing clock on the basis of a signal from an image sensor and the sizing clock having predetermined frequency from a PLL circuit.
CONSTITUTION: When an article 14 is irradiated by a light source 15 and the light from the light source 15 is received through the article 14 by an image sensor 1, the sensor 1 produces a signal having a waveform shown in Fig. a. When the signal a is fed through an amplifier 9 and an envelope circuit 10, the circuit 10 produces a signal having a waveform shown in Fig. b. The signal output from the circuit 10 is then applied to a waveform shaper 11, which produces a signal c having pulse width t corresponding to the size of an article 14 to be measured. When the signal from the sensor 1 is, on the other hand, applied to a PLL circuit, the circuit produces a sizing clock having predetermined frequency shown in Fig. d from a variable frequency oscillator 6. When the output from the shaper 11 and the output from the oscillator 6 are then applied to an AND gate 14 as shown in Figs. c and d, the AND gate 14 produces a signal e having pulse number corresponding to the width of silver plated portion 18. The pulse number is counted by a counter 15 to measure the width of the portion 18.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4498779A JPS55136903A (en) | 1979-04-12 | 1979-04-12 | Device for measuring size |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4498779A JPS55136903A (en) | 1979-04-12 | 1979-04-12 | Device for measuring size |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55136903A true JPS55136903A (en) | 1980-10-25 |
Family
ID=12706799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4498779A Pending JPS55136903A (en) | 1979-04-12 | 1979-04-12 | Device for measuring size |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55136903A (en) |
-
1979
- 1979-04-12 JP JP4498779A patent/JPS55136903A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5698660A (en) | Frequency measuring device | |
JPS53149076A (en) | Digital frequency detecting circuit | |
JPS525581A (en) | Voltage detector circuit | |
JPS55136903A (en) | Device for measuring size | |
JPS55136902A (en) | Device for measuring pattern on surface of article | |
JPS55141817A (en) | Control unit for detection signal | |
JPS5428669A (en) | Noise measuring circuit | |
JPS5296047A (en) | Original point detector | |
JPS5422865A (en) | Miniature electronic watch | |
JPS5326166A (en) | Measuring apparatus for clock time accuracy | |
JPS5463871A (en) | Mean time interval metering circuit | |
JPS53104277A (en) | Electronic watch | |
JPS52115257A (en) | Electronic watch with alarm | |
JPS54946A (en) | Operation speed test circuit for logic element or logic circuit | |
JPS5219944A (en) | Pulse width change circuit | |
JPS5313477A (en) | Operating time measuring system for mechanism | |
JPS549977A (en) | Measuring apparatus for rotational speed | |
JPS5347873A (en) | Delay time measuring device | |
JPS5320349A (en) | Measuring method for wave length dispersion of photo-fiber | |
JPS5214465A (en) | Frequency measuring device | |
JPS535608A (en) | Hunting characteristic measurement device | |
JPS52139477A (en) | Frequency measuring system | |
JPS56130664A (en) | Frequency measuring system | |
JPS5363083A (en) | Detecting circuit for minute changing quantity | |
JPS5315872A (en) | Dew detector |