JPH077868A - Power supply fault notifying equipment - Google Patents

Abstract

PURPOSE:To provide a power supply fault notifying equipment capable of specifying a power supply unit where a fault occurs and notifying a controller of the fault. CONSTITUTION:A bus 41 for reporting fault information is provided to transmit and received power supply fault detecting information between a controller 30 and first to n-th function blocks 201 to 20n. Also at the first function block 201, provided are a first detection circuit 421 for creating power supply fault detection information by detecting power supply fault detection information transmitted from a first power supply unit 211, a bus interference circuit 431 for first fault information notification for sending the power supply fault information to a bus 41 for fault information notification, and a first battery backup circuit 441 for supplying backup voltage to the bus interference circuit 431 for first fault information notification and also to the first detection circuit 421 when a fault has occurred in the first power supply equipment 211. Same configuration is also for 2nd to n-th function blocks.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply failure notifying device, and more particularly to a power supply device failure in a communication system in which a plurality of functional blocks each having a power supply device and a control device are connected via a system bus. The present invention relates to a power failure notification device for notifying a control device of a power failure.

[0002]

2. Description of the Related Art In recent years, with the miniaturization of power supply devices, functional blocks such as communication systems have been implemented as hardware by integrally forming one or a plurality of packages each equipped with a power supply device.

FIG. 2 is a block diagram showing a conventional example of a communication system having n functional blocks configured as described above.

The communication system 100 includes _{first to n-} th functional blocks 110 _{1 to} 110 _n and _{first to n-th} functional blocks 11 ₁ to _n , respectively, on which first to _n-th power supply devices 111 _{1 to} 111 _n are mounted.
0 _{1 to} 110 _n and a control device 120 respectively connected via a system bus 200, and first to nth power supply devices 111 _{1 to} 111 _n
A monitoring device 130 that monitors the device, a display device 140 connected to the monitoring device 130, and first to nth power supply devices 111 _{1 to} 111 _n.
And a main power supply 150 for supplying an input voltage. Note that, in FIG. 2, the second to n−1th functional blocks 110 _{2 to} 110 _n−1 are omitted for simplicity of the drawing.

Here, the first to n-th power supply devices 111 _{1 to} 11 ₁
Since the power failure information from the 1 _n to the monitoring device 130 is normally issued as contact loop information or electronic loop information, the first to n-th power supply devices 111 _{1 to} 111 _n and the monitoring device 130.
The connection with is a double connection. The notification of the power failure information sent to the monitoring device 130 to the maintenance person is performed via the display device 140. Furthermore, the first to nth functional blocks
The system bus 200 provided between 110 _{1 to} 110 _n and the system bus 200 includes _first to nth functional blocks 110 _{1 to} 11
Control information for controlling the 0 _n, for the purpose of transmitting and receiving function block 110 ₁ to 110 _n fault information in the response information and the first to n functional blocks 110 ₁ to 110 _n of the first to n is there.

[0006] Next, the operation of the communication system 100 will be described by taking as an example the case where a failure occurs in the _first power supply device 111 ₁ mounted on the first functional block 110 ₁ .

A first mounted on the first function block 110 ₁
If a failure occurs in the power supply device 111 ₁ of the above, the supply of the power supply voltage to the _first functional block 110 ₁ is cut off, and thus the first functional block 110 ₁ cannot operate normally. As a result, even if control information is sent from the control device 120 to the first functional block 110 ₁ , no response information is returned from the first functional block 110 _1, so the control device 120 is Recognize that some kind of failure has occurred in the first functional block 110 ₁ . Further, the power supply failure information is sent from the first functional block 110 ₁ to the monitoring device 130, and the maintenance person is notified via the display device 140.

[0008]

However, in the above-mentioned conventional communication system 100, the control device 120 detects the continuation of the non-response state to the control information when the _first functional block 110 ₁ is accessed. to recognize that some failure occurs in the first functional block 110 _1, whether the first functional block 110 ₁ is an obstacle in the failure of the electronic parts such as IC, the first power supply apparatus 111 ₁ of the fault There is a problem that it is not possible to identify whether it has become inoperable. In addition, the first to nth power supply devices 111 _{1 to} 11
Since the connection between 1 _n and the monitoring device 130 is a double connection, there is a problem that the monitoring device 130 cannot identify the power supply device in which the failure has occurred.

Incidentally, Japanese Patent Application Laid-Open No. 2-51336 discloses that
A method of extending the life of the backup battery is disclosed when the backup battery is used to notify the monitoring device from the power-off notification signal generator when the power is cut off. Since the communication system in which the functional block and the control device are connected to each other via the system bus is not premised, there is no disclosure about specifying the power supply device in which a failure has occurred and notifying the control device.

An object of the present invention is to identify a power supply unit in which a failure has occurred in a communication system in which a plurality of functional blocks each equipped with a power supply unit and a control unit are connected via a system bus. It is to provide a power failure notification device capable of notifying.

[0011]

SUMMARY OF THE INVENTION A power failure notification device of the present invention is a failure of the power supply device in a communication system in which a plurality of functional blocks each having the power supply device and a control device are connected via a system bus. A power failure notification device for notifying the control device, which is provided in each of the functional blocks and detects power failure information issued from the power supply device to create power failure detection information. Means, a fault information notification bus for transmitting and receiving the power source fault detection information, which is connected between each of the functional blocks and the control device, and the detection means provided in each of the functional blocks. Fault information notification bus interface means for placing the transmitted power failure detection information on the fault information notification bus, and the respective function blocks. It is provided, characterized in that it comprises a battery backup unit for supplying respectively a backup voltage to the detecting means and the fault information notification bus interface unit when a failure in the power supply occurs.

[0012]

According to the power failure notification device of the present invention, the detection means and the failure information notification bus interface means provided in the functional block in which the failed power supply device is mounted,
By supplying the backup voltage from the battery backup means provided in this function block, the power failure information is detected by detecting the power failure information issued from the failed power supply device for each function block. After the information is created, the created power failure detection information can be sent to the control device via the failure information notification bus interface means and the failure information notification bus.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a communication system having an embodiment of a power failure notification device of the present invention.

The communication system 10 includes first to nth functional blocks 20 _{1 to} 20 _n equipped with _{first to} nth power supply devices 21 _{1 to} 21 _n , respectively, and first to nth functional blocks 20. _{1 to} 20 _n , the control device 30 connected via the system bus 50 and the fault information notification bus 41, and the display device 35 connected to the control device 30. For the sake of simplicity of the drawing, the second to (n-1) th functional blocks 20
Details of _{2 to} 20 _n-1 and the n-th functional block 20 _n are omitted in FIG.

The fault information notification bus 41 includes the first to nth
It is intended for transmitting and receiving power failure detection information between the functional blocks 20 ₁ to 20 _n and the control device 30. Further, in the first functional block 20 _1, the first and the functional block main circuit 22 ₁ of the predetermined power supply voltage is supplied from the first power supply device 21 _1, sent from the first functional block main circuit 22 ₁ The first system bus interface circuit 23 ₁ for putting the received control information and response information on the system bus 50 ₁
And a first detection circuit 42 ₁ for detecting power failure information issued from the first power supply device 21 ₁ and creating power failure detection information, and sent from the first detection circuit 42 _1. First fault information notification bus interface circuit 4 for putting the incoming power failure detection information on the fault information notification bus 41
3 ₁ and a first battery for supplying a backup voltage to the first detection circuit 42 ₁ and the first failure information notification bus interface circuit 43 ₁ when a failure occurs in the _first power supply device 21 _1. A backup circuit 44 ₁ is provided. The same applies to the _{second to} nth functional blocks 20 _{2 to} 20 _n .

Here, the first to nth functional blocks 20.
_First to nth detection circuits 42 _{1 to} 42 _n and _1st to nth functional blocks 20 ₁ to 20 ₁ provided in _{1 to} 20 _n , respectively.
Fault information notification bus 41 connected between 20 _n and control device 30 and _first to nth functional blocks 20 ₁ to 2
0 _n to the first to n-th fault information notification bus interface circuits 431 to 43 _n and the _first to _n- th functional blocks 20 _{1 to} 20 _n , respectively. The battery backup circuits 44 _{1 to} 44 _n of
It functions as a power failure notification device of the communication system 10.

Although not shown in the figure, the first to nth detection circuits 42 _{1 to} 42 _n , the first to nth fault information notification bus interface circuits 43 ₁ to 43 _n, and the first to _nth . Predetermined power supply voltages are also supplied to the n system bus interface circuits 22 _{1 to} 22 _n from the first to nth power supply devices 21 _{1 to} 21 _n, respectively. An input voltage is supplied to the first to n-th power supply devices 21 _{1 to} 21 _n from an external main power supply (not shown).

Next, the operation of the communication system 10 will be described by taking as an example the case where a failure occurs in the _first power supply unit 21 ₁ mounted on the first functional block 20 ₁ .

The first power supply unit 21 due to a component failure or the like
₁ has failed and the first functional block main circuit 22
₁ , when the power supply voltage from the first power supply device 21 ₁ cannot be supplied to the first detection circuit 42 ₁ , the first fault information notification bus interface circuit 43 ₁ and the first system bus interface circuit 23 ₁ . Is notified of power failure information from the first power supply 21 ₁ . When the reported power failure information is sent from the first power supply device 21 ₁ to the first battery backup circuit 44 ₁ , the backup voltage is output from the first battery backup circuit 44 ₁ to the first detection circuit 4 1.
2 ₁ and the first fault information notification bus interface circuit 43 ₁ . As a result, the first detection circuit 42 ₁ and the first fault information notification bus interface circuit 43 ₁ are operable even if the supply of the power supply voltage from the _first power supply device 21 ₁ is stopped.

Further, the first detection circuit 42₁ Then the first
Power supply 21₁ The power failure information issued from
Then, the power failure detection information is created. Power supply created
The fault detection information is the first fault information notification bus interface.
Circuit 43₁ On the fault information notification bus 41
Then, it is sent to the control device 30. As a result,
In the unit 30, the first functional block 20₁ Mounted on
First power supply 21 ₁ Recognized that a failure has occurred
Be done. First functional block 20₁ First power supply device 21
₁ When notifying maintenance personnel that a failure has occurred in
The display device 35 displays that fact from the control device 30.

When a failure occurs in the _first power supply device 21 ₁ , even if control information is sent from the control device 30 to the first functional block main circuit 22 ₁ via the system bus 50, Since the functional block main circuit 22 ₁ of No. 1 is inoperable due to a power failure, the response information to the control information is transmitted from the first functional block main circuit 22 ₁ to the control device 3.
Not returned to 0. Therefore, even in the communication system 10, only the communication between the _first functional block 201 and the control device 30 via the system bus 50 is performed by the control device 30 in the same manner as in the conventional communication system 100 shown in FIG. 1
The first power supply device 21 installed in the functional block 20 ₁ of the
The abnormality ₁ cannot be recognized.

[0023]

Since the present invention is configured as described above, it has the following effects.

For each functional block, the power failure information issued from the failed power supply unit is detected by the detecting means to create the power failure detection information, and then the created power failure detection information is used for failure information notification. Since it can be sent to the control device via the bus interface means and the fault information notification bus, the control device can identify in which functional block the power supply device mounted has a fault. As a result, it is possible to promptly notify the maintenance person of the repair instruction of the functional block and to take measures for early recovery.

[Brief description of drawings]

FIG. 1 is a block diagram showing a communication system having an embodiment of a power failure notification device of the present invention.

FIG. 2 is a block diagram showing a conventional example of a communication system having n functional blocks each equipped with a power supply device.

[Explanation of symbols]

10 Communication System 20 ₁ First Function Block 20 _n Nth Function Block 21 ₁ First Power Supply Device 22 ₁ First Function Block Main Circuit 23 ₁ First System Bus Interface Circuit 30 Control Device 35 Display Device 41 Fault Information notification bus 42 ₁ First detection circuit 43 ₁ First fault information notification bus interface circuit 44 ₁ First battery backup circuit 50 System bus

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[Procedure amendment]

[Submission date] November 9, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

Claims (1)

[Claims] 1. A power failure notification device for notifying the control device of a failure of the power supply in a communication system in which a plurality of functional blocks each having a power supply device and a control device are connected via a system bus. A detection unit provided in each of the functional blocks for detecting the power failure information issued from the power supply unit to create power failure detection information; The fault information notification bus for transmitting and receiving the power source fault detection information, which is connected in between, and the power source fault detection information sent from the detection means, which is provided in each of the functional blocks, is the fault information. Failure information notification bus interface means for mounting on the notification bus, and a failure occurs in the power supply device provided in each of the functional blocks Said detecting means and the power failure notification apparatus characterized by comprising a battery backup unit for supplying the backup voltage to each of the fault information notification bus interface means when the.