JPS5449180A - Watthour meter - Google Patents

Watthour meter

Info

Publication number
JPS5449180A
JPS5449180A JP11591977A JP11591977A JPS5449180A JP S5449180 A JPS5449180 A JP S5449180A JP 11591977 A JP11591977 A JP 11591977A JP 11591977 A JP11591977 A JP 11591977A JP S5449180 A JPS5449180 A JP S5449180A
Authority
JP
Japan
Prior art keywords
proportional
counter
pulse number
converter
analog
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
JP11591977A
Other languages
Japanese (ja)
Inventor
Ryoji Gamo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11591977A priority Critical patent/JPS5449180A/en
Publication of JPS5449180A publication Critical patent/JPS5449180A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To realize electronic type watthour meter having a simple structure and a high precision by processing all signals except A-D converter digitally, without using analog constitution even in multiplication part so as to eliminate analog error.
CONSTITUTION: A voltage signal ev proportional to load voltage, and a voltage signal ei proportional to current consumption are fed into A-D converter 11 through an analog switch Sa which is selectively closed by sequence logic 10 to convert into a pulse number proportional to the signal level. A counter 12 is connected to v-contact side of logic switch Sb which cooperates with Sa, and pulse number Nv proportional to ev is counted at every A-D conversion. On the other hand, a rate- multiplier 13 is connected to i-contact side, and pulse number Ni of the converter 11 is sent into the multiplier 13 in which is set a pulse number Nv proportional to signal ev in parallel from the counter 12. These pulse numbers Nv, Ni are simultaneously sent into a subsequent up-down counter 14. This counter 14 integrates to obtain the electric energy
COPYRIGHT: (C)1979,JPO&Japio
JP11591977A 1977-09-27 1977-09-27 Watthour meter Pending JPS5449180A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11591977A JPS5449180A (en) 1977-09-27 1977-09-27 Watthour meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11591977A JPS5449180A (en) 1977-09-27 1977-09-27 Watthour meter

Publications (1)

Publication Number Publication Date
JPS5449180A true JPS5449180A (en) 1979-04-18

Family

ID=14674449

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11591977A Pending JPS5449180A (en) 1977-09-27 1977-09-27 Watthour meter

Country Status (1)

Country Link
JP (1) JPS5449180A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5262068A (en) * 1975-11-17 1977-05-23 Toshiba Corp Electronic watthour meter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5262068A (en) * 1975-11-17 1977-05-23 Toshiba Corp Electronic watthour meter

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