JPS6459514A - Method for monitoring battery voltage - Google Patents

Method for monitoring battery voltage

Info

Publication number
JPS6459514A
JPS6459514A JP62217673A JP21767387A JPS6459514A JP S6459514 A JPS6459514 A JP S6459514A JP 62217673 A JP62217673 A JP 62217673A JP 21767387 A JP21767387 A JP 21767387A JP S6459514 A JPS6459514 A JP S6459514A
Authority
JP
Japan
Prior art keywords
battery voltage
power
voltage monitoring
monitoring circuit
battery
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
JP62217673A
Other languages
Japanese (ja)
Inventor
Masashi Yanagi
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP62217673A priority Critical patent/JPS6459514A/en
Publication of JPS6459514A publication Critical patent/JPS6459514A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To reduce power consumption in a battery voltage monitoring circuit, by monitoring a battery voltage in a power-off state periodically. CONSTITUTION:It is always required to operate the battery voltage monitoring circuit 2 since a large amount of power is consumed by each device in a power-on state and the fluctuation of the battery voltage 1 is remarkably. However, in the power-off state, the power consumption of each operating device in quite few, and the fluctuation of the voltage is gentle due to the characteristic of a battery. Then, the battery voltage monitoring circuit is operated periodically, not always operated in the power-off state. The battery voltage monitoring circuit is connected to the battery via a Tr1, and the ON/OFF operation of the Tr1 is performed by a /RON signal, and a power source control circuit 20 decides whether or not the battery voltage drops less than a preset value by energizing a voltage monitoring IC by turning ON the Tr1, and reading a /BATLO signal at a time when the operation of the voltage monitoring IC is stabilized after a prescribed time. In such a way, it is possible to reduce the power consumption in the battery voltage monitoring circuit remarkably.
JP62217673A 1987-08-31 1987-08-31 Method for monitoring battery voltage Pending JPS6459514A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62217673A JPS6459514A (en) 1987-08-31 1987-08-31 Method for monitoring battery voltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62217673A JPS6459514A (en) 1987-08-31 1987-08-31 Method for monitoring battery voltage

Publications (1)

Publication Number Publication Date
JPS6459514A true JPS6459514A (en) 1989-03-07

Family

ID=16707929

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62217673A Pending JPS6459514A (en) 1987-08-31 1987-08-31 Method for monitoring battery voltage

Country Status (1)

Country Link
JP (1) JPS6459514A (en)

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