JPH07288927A - Power device monitor control unit - Google Patents

Abstract

PURPOSE:To provide a power device monitor control unit which can be restarted automatically when it is recovered from power outage even in the case that other devices receive the information of occurrence of power outage and get in power outage condition. CONSTITUTION:A monitor control unit 1 is composed of a controller a, an input port b, an output port c, a communication port d, and an AC/DC converter e, an internal power source. The controller has a main function a1 which monitors the input port b and recognizes the occurrence of power stoppage and the recovery from it, a monitor information function a2, which recognizes the power outage and performs counting and informs the occurrence of power stoppage from the communication port d when the power outage continuous for a specified time, and a monitor control function which performs the counting after information of power outage occurrence and, when it comes to the specified time, turns on a reset signal from the output port c if it is recovered from power outage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a supervisory control unit for a power supply device.

[0002]

2. Description of the Related Art Conventionally, when a power failure occurs in a power supply, it is generally switched to battery supply to supply power to other devices connected to the power supply and notify the occurrence and restoration of the power failure. is there.

[0003]

However, in the conventional power supply device, when another device that requires the power supply device to be turned on again is connected, this other device notifies the power supply device of the occurrence of a power failure. When receiving the power, the other devices will not restart even after the power failure is restored.
Therefore, an object of the present invention is to provide a power supply monitoring control unit that can automatically restart when a power failure is restored even when another device receives a power failure notification from the power supply apparatus and enters a stopped state. And

[0004]

In the power supply monitoring and control unit of the present invention, an input port for monitoring the state of the power supply, an output port for controlling the power supply on / off, and a state of the power supply are displayed. A communication port that notifies other devices and a controller that controls the input port, the output port, and the communication port is provided, and when the controller recognizes that a power failure has occurred based on the information from the input port, it counts time, When the power failure continues for a predetermined time or longer, it notifies the other device that a power failure has occurred, after this power failure occurrence notification, after a further predetermined time has elapsed, when the power failure returns, through the output port, A reset signal is output to the power supply device.

[0005]

[Effect] Even when the other device receives the notification of the power outage and enters the stopped state, the power supply control unit monitors the state of the power supply, and when the power is restored, the power supply is notified of the reset. Since this is done, the other device can be automatically restarted.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, which is another device which receives power supply from a power supply device 2. A workstation (hereinafter referred to as W / S) 3 is connected to the secondary side of the power supply device 2. The monitoring control unit 1 is also connected between the secondary side of the power supply device 2 and the W / S 3.

As shown in FIG. 2, the supervisory control unit 1 is
A controller a such as a microcontroller, an input port b for monitoring the state of the power supply device 2, an output port c for controlling the power supply device 2, a communication port d for notifying the W / S 3 of the state of the power supply device 2 and an internal power supply. It is composed of an AC / DC converter e to be created. The controller a monitors the power failure and recognizes the occurrence and recovery of the power failure. The main function a1 recognizes the power failure and counts the time. When the power failure continues for a predetermined time, the communication port d notifies the occurrence of the power failure. Monitoring notification function a2: After this notification, the time is further counted, and after a lapse of a predetermined time, if the power outage is recovered, the monitoring control function a for turning on the reset signal from the output port c
Have three.

FIG. 3 shows the operation of the supervisory control unit 1 during the duration of the power failure, and A in the figure indicates whether the primary voltage of the power supply device 2 is (g level) or not (h level). Show. Reference numeral B denotes a power failure occurrence signal included in the power supply device 2, which indicates occurrence of a power failure (j level) and restoration (i level). C is a reset signal that controls the secondary side voltage of the power supply device 2, and is on (k
Level) and off (l level). D is the power supply device 2
Indicates that the secondary voltage is present (m level) and not present (n level).
E indicates whether the voltage of the supervisory control unit 1 is present (p level) or not (r level). F indicates whether the voltage of W / S3 is present (s level) or not (u level).

FIG. 3A shows the case where the power failure occurrence time is within a predetermined time (t> t1). When a power failure occurs at the time point A1, the power failure occurrence signal of the power supply device 2 becomes j level. When the controller a takes in this information via the input port b and recognizes the occurrence of a power failure by the main function a1, the monitoring notification function a2 starts counting the time, but the power failure is within a predetermined time (t> t1), That is, when the power is restored at the time point A2, the current count value is cleared and the normal monitoring operation of the power supply device 2 is started again. In this case, since the W / S3 is not notified of the power failure signal, the W / S3 does not stop and the normal state is continued.

FIG. 3B shows the case where the power failure occurrence time is a predetermined time or more (t = <t1) and is within the battery allowable time of the power supply device 2. When a power failure occurs at time A3, the power failure occurrence signal of the power supply device 2 becomes j level. The controller a takes in this information through the input port b, and when the main function a1 recognizes the occurrence of a power failure, the monitoring notification function a2 starts counting the time,
When the power failure continues for a predetermined time (t = t1), the W / S3 is notified of the power failure via the communication port d. Upon receiving this notification, the W / S3 performs a shutdown operation and enters a stopped state.

The controller a further counts by the monitoring control function a3, and when t2 time has elapsed after the notification, it monitors whether or not the power failure has been restored. If it has not been restored, it is constantly monitored, and if it is restored at time A4, the reset signal is turned on via the output port c, and a reset notification is given. As a result, the secondary power supply of the power supply device 2 is cut off,
The power of W / S3 is turned off. Further, since the monitoring control unit 1 is also supplied with power from the power supply device 2,
When the secondary power supply disappears, the reset signal turns off, the reset of the power supply device 2 is released, and the secondary power supply is restored. Therefore, the monitoring control unit 1 and the W / S3 are restarted.

FIG. 3C shows a case where the power failure occurrence time is equal to or longer than a predetermined time (t = <t1) and exceeds the battery allowable time of the power supply device 2. When a power failure occurs at time A5, the power failure occurrence signal of the power supply device 2 becomes j level. The controller a takes in this information via the input port b, and when the main function a1 recognizes the occurrence of a power failure, the monitoring notification function a2 starts counting the time, and when the power failure continues for a predetermined time (t = t1), The power outage is notified to the W / S 3 via the communication port d. W / S
Upon receiving this notification, 3 performs a shutdown operation and enters a stopped state.

The controller a further counts by the monitoring control function a3, and when t2 time has elapsed after the notification, it monitors whether or not the power failure has been restored. If not recovered, always monitor and if the battery's allowable time is exceeded,
Since the secondary power source of the power supply device 2 is lost, the monitoring control unit 1 and W / S3 are stopped. After that, when the power failure is restored at time point A6, the secondary power supply of the power supply device 2 is turned on, so that the monitoring control unit 1 and the W / S3 are restarted.

[0014]

As described above, according to the present invention, even when another device that needs to be turned on again is connected to the power supply device, when the power failure is restored, the other device automatically operates. Can be restarted.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram of the supervisory control unit.

FIG. 3 is a diagram for explaining the operation of the power supply device monitoring unit of the present embodiment.

[Explanation of symbols]

 1 supervisory control unit 2 power supply device 3 W / S a controller a1 main function a2 supervisory notification function a3 supervisory control function b input port c output port d communication port

Claims (1)

[Claims] 1. An input port for monitoring the state of a power supply device, an output port for controlling the power supply device on / off, a communication port for notifying other devices of the state of the power supply device, and these input ports, output ports, and A controller for controlling the communication port is provided, and when the controller recognizes that a power outage has occurred based on the information from the input port, it counts time, and when the power outage continues for a predetermined time or longer, the power outage has occurred. Is notified to the other device, and after the power failure is restored after the power failure is notified after a predetermined time has passed, a reset signal is output to the power supply device via the output port. Power supply monitoring and control unit.