JPS62139100A - Battery voltage monitor system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a system for monitoring the battery voltage of a terminal device in a system having a center device and a terminal device. The present invention relates to a battery 1rL pressure monitoring method that enables the following.

[Conventional technology] Conventionally, central processing was performed in a central device! A2!1 etc., and various information can be transmitted from each terminal device to this central processing unit, etc., or each terminal device can be equipped with a central processing type;!
Monitoring of the battery voltage of terminal devices in various systems that attempt to obtain information from 1.1 was carried out independently by each terminal device on the terminal device side.

[Problems to be Solved by the Invention] According to the conventional battery voltage monitoring method described above, in order to monitor the battery voltage of a terminal device, each terminal device must be checked separately on the terminal device side. Therefore, in a system with many terminal devices, a large amount of time and Pα are required for monitoring.

The disadvantage is that it is difficult to maintain.

The present invention was made in consideration of the problem described in E. By monitoring the 1V and battery voltage of each terminal device at once in a central device, even a system with many terminal devices can be easily and quickly. The purpose of this invention is to provide a battery voltage monitoring method that can monitor the battery voltage of a terminal device.

[R stage for solving the problem] In order to achieve the object described in L, the battery voltage monitoring method of the present invention compares the battery voltage of the terminal device with a reference voltage, and always inputs the comparison result to the buffer. In this method, the battery voltage of each terminal device is monitored in the center device by sending a comparison result signal from the buffer to the center device in response to a comparison result request signal from the center device.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a basic signal flow diagram of this embodiment. In FIG. 1, the device is a center device, which includes, for example, a central processing unit, a communication control device 21, and the like. Reference numeral 2 denotes a terminal device, which is equipped with an input device, an output device, etc., and together with the setter device 1 constitutes various systems such as a communication control system. 3 is the battery of the terminal device 2, and 4 is the standard.
This is a reference voltage input terminal from a +If pond (not shown). 5 is a comparator, which compares the voltage of battery 3 and the reference '-L voltage 4
Compare.

Reference numeral 6 denotes a buffer, which constantly stores the comparison result between the voltage of the battery 3 and the reference voltage 4 by the comparator 5, and when the comparison result request signal 7 is sent from the center device l, the comparison result is stored. The result signal 8 is sent to the center unit 211.
Send to. Note that the comparison result request signal 7 and the comparison result signal 8 can be transmitted using a transmission system used for normal information transmission.

Therefore, the voltage 3 of the battery whose voltage is to be monitored is set to the reference voltage 4. and is compared by comparator 5.

The comparison results are always input to the buffer 6, and the center device f side receives and receives the battery voltage comparison result signal by sending out the battery voltage comparison result request signal 7. 3' monitors whether the voltage is normal or not.

FIG. 2 is an overall diagram of a system using the method of the present invention, which includes a center unit 211 and a terminal unit 2121.

Transmission 259 using 22, ~, 2n for normal information transmission
By connecting each terminal device (2
1, 22, to 2n, the ti i 'lli pressures are monitored.

[Effects of the Invention] As explained above, the present invention allows instantaneous monitoring of the battery voltage of the terminal devices from the four center devices, so there is no need to check the battery voltage of the terminal devices separately on each terminal device side. You can monitor it at any time without having to worry about it, which makes maintenance easier. Particularly, in systems with many terminal devices, there is an effect that more efficient maintenance can be performed.

[Brief explanation of drawings]

FIG. 1 shows an X-ray signal flow diagram of an embodiment of the unreleased II, and FIG. 2 shows an overall diagram of an example system using the method of the present invention. l: Center device 2/Terminal device 3: Battery 4: Standard voltage (input terminal T-) 5
: Comparator 6 buffer 7: Comparison result request signal 8: Comparison result signal - 9: Transmission system

Claims (1)

[Claims] In a method for monitoring the battery voltage of a terminal device, the battery voltage of the terminal device is compared with a reference voltage, the comparison result is always input into a buffer, and the comparison result signal is buffered by a comparison result request signal from the center device. A battery voltage monitoring method characterized in that the battery voltage of each terminal device is monitored in the center device by sending data from the center device to the center device.