JPS6484159A - Pulse width measuring method - Google Patents
Pulse width measuring methodInfo
- Publication number
- JPS6484159A JPS6484159A JP24338887A JP24338887A JPS6484159A JP S6484159 A JPS6484159 A JP S6484159A JP 24338887 A JP24338887 A JP 24338887A JP 24338887 A JP24338887 A JP 24338887A JP S6484159 A JPS6484159 A JP S6484159A
- Authority
- JP
- Japan
- Prior art keywords
- pulse width
- temperature
- counting operation
- frequency
- level
- 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.)
- Granted
Links
Landscapes
- Indication And Recording Devices For Special Purposes And Tariff Metering Devices (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Abstract
PURPOSE:To omit counting operation which is not necessary for pulse width measurement and to save electric power by measuring the time difference between a minimum time on which pulse width to be measured is based and the pulse width to be measured. CONSTITUTION:A counter controller 25 switches the frequency of a frequency division output to a higher frequency in order right after the start of operation to perform counting operation. Then when the output of a temperature sensor rises to high level, the counting operation is stopped and the current outputs Q0-Q7 of a binary counter 24 become a compensation code, which is supplied to a VCX02 to perform temperature compensation. Thus, the difference between low-level pulse width at current temperature and pulse width at -30 deg.C is counted with reference pulses of high frequency based on the minimum width of gate pulse in the compensated temperature range, e.g. low-level pulse width at -30 deg.C, and the counted value is used as a temperature compensation code at each temperature. Consequently, unnecessary counting operation at the time of the pulse width measurement is omitted and the electric power consumption is reduced.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24338887A JP2577931B2 (en) | 1987-09-28 | 1987-09-28 | Pulse width measurement method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24338887A JP2577931B2 (en) | 1987-09-28 | 1987-09-28 | Pulse width measurement method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6484159A true JPS6484159A (en) | 1989-03-29 |
JP2577931B2 JP2577931B2 (en) | 1997-02-05 |
Family
ID=17103113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24338887A Expired - Lifetime JP2577931B2 (en) | 1987-09-28 | 1987-09-28 | Pulse width measurement method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2577931B2 (en) |
-
1987
- 1987-09-28 JP JP24338887A patent/JP2577931B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2577931B2 (en) | 1997-02-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS6418285A (en) | Laser output correction system | |
JPS57153599A (en) | Method and device for reducing power consumption of step motor | |
JPS6484159A (en) | Pulse width measuring method | |
JPS5614177A (en) | Analog electric timepiece | |
DE3460798D1 (en) | Method of monitoring the charging of batteries | |
JPS5540952A (en) | Temperature measurement unit | |
JPS5443344A (en) | Induction heating apparatus | |
JPS526569A (en) | Digital power measuring unit | |
JPS55146051A (en) | Measuring method of current consumption of liquid crystal display circuit | |
JPS6414832A (en) | Electrode consumption rate measuring device for power breaker | |
JPS5648076A (en) | Battery control circuit | |
SU1401387A1 (en) | Device for checking the process of electric power consumption | |
SU1012039A1 (en) | Device for measuring temperature change rate | |
JPS5790723A (en) | Power supply device | |
JPS5624551A (en) | Device for measuring corrosion speed of metal | |
JPS5713382A (en) | Power source circuit for electronic clock | |
SU474758A1 (en) | Narrow-band analog frequency meter | |
JPS57182225A (en) | Switching regulator | |
JPS6452395A (en) | High frequency heating device | |
JPS5638986A (en) | Controlling method of motor | |
FR2368040A1 (en) | Electricity meter electronic testing circuit - compares meter pulse rate with correct pulse rate to calculate error and provide digital display | |
JPS5419110A (en) | Control circuit for small step motor | |
JPS57119683A (en) | Servo circuit for rotating speed | |
JPS57179686A (en) | Timer element | |
JPS5724862A (en) | Electric power charge meter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
EXPY | Cancellation because of completion of term |