JPS55136903A - Device for measuring size - Google Patents

Device for measuring size

Info

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
Application number
JP4498779A
Other languages
Japanese (ja)
Inventor
Masaomi Kondo
Masaru Watanabe
Minoru Todokoro
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.)
KEISOKU GIJUTSU KENKYUSHO
KEISOKU GIJUTSU KENKYUSHO KK
Hitachi Cable Ltd
Original Assignee
KEISOKU GIJUTSU KENKYUSHO
KEISOKU GIJUTSU KENKYUSHO KK
Hitachi Cable 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 KEISOKU GIJUTSU KENKYUSHO, KEISOKU GIJUTSU KENKYUSHO KK, Hitachi Cable Ltd filed Critical KEISOKU GIJUTSU KENKYUSHO
Priority to JP4498779A priority Critical patent/JPS55136903A/en
Publication of JPS55136903A publication Critical patent/JPS55136903A/en
Pending legal-status Critical Current

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
JP4498779A 1979-04-12 1979-04-12 Device for measuring size Pending JPS55136903A (en)

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)

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