JP2877985B2 - Serial bus interface power supply system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a serial bus interface power supply system in which a plurality of power supplies are controlled by a serial bus.

[0002]

2. Description of the Related Art Conventionally, in this type of serial bus interface power supply system, when an abnormality occurs in any of a plurality of power supplies, the abnormal power supply reports to the power control apparatus that the abnormality has occurred. I am trying to do it. The abnormality occurrence signal reporting that the abnormality has occurred is transmitted as serial data. Further, in the abnormality processing of the power supply control device, a command for prohibiting abnormality detection transmitted from the power supply control device to all the power supply devices is also performed by a command using serial data.

[0003]

In the conventional serial bus interface power supply system described above, the control time required for serial-to-parallel conversion of an abnormality occurrence signal,
Since a command for prohibiting abnormality detection requires a large amount of control time for abnormal processing such as a control time required for the power supply device to perform serial-to-parallel conversion, there is a disadvantage that an abnormality that occurs as a secondary failure cannot be prevented.

[0004] The present invention has been made in view of the above problems, and has as its object to reduce the control time required for serial-parallel conversion and prevent the occurrence of a secondary failure.

[0005]

To achieve this object, a serial bus interface power supply system according to the present invention comprises a plurality of power supplies, a power supply control device for controlling the plurality of power supplies, and a plurality of power supplies. A serial data bus signal line connecting the device and the power supply control device, and when an abnormality occurs in any of the plurality of power supply devices ,
And the abnormality occurrence signal line for transmitting the abnormality signal to the power control unit from the power supply has occurred, when the power supply control device receives the abnormality occurrence signal, the abnormality of the origination
The power supply unit other than the power supply unit
It is configured to include an abnormality detection report prohibiting signal line for transmitting the abnormality detection report prohibiting signal for prohibiting the transmission of the abnormality occurrence signal to.

[0006]

[Action] In the serial bus interface power supply system having the above-described configuration, any one of a plurality of power supply
The occurrence of an abnormality is reported to the power supply control device using the abnormality occurrence signal line, and when the power supply control device receives the abnormality occurrence signal of the power supply device , the abnormality detection report prohibition signal line is set.
By transmitting an abnormality detection report prohibition signal to a power supply device other than the one in which the abnormality has occurred, the control time required for serial-to-serial conversion of serial data can be reduced. Can be prevented from occurring.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a serial bus interface power supply system according to the present invention. In FIG. 1, a power supply control device 1 and a rectified power supply device 2
When a DC-DC converter power supply 3, DC-DC co
The inverter power supply 4 is connected to the serial data bus signal line 11.
In a daisy chain. The rectified power supply 2 , DC-D
C converter power supply 3 , DC-DC converter power supply
A power-on instruction, a power-off instruction, and collection of fault information at the time of abnormality processing are performed between the device 4 and the power control device 1. Rectification
Power supply device 2 , DC-DC converter power supply device 3 , DC-
Between the DC converter power supply device 4 and the power supply control device 1,
Furthermore, they are connected by an abnormality occurrence signal line 12 and an abnormality detection report prohibition signal line 13. Rectifier power supply 2 , DC-DC
Inverter power supply 3 , DC-DC converter power supply 4
Are set with different physical addresses, and the power supply control device 1 can control specific power supply devices 2 to 4 by sending the command including the physical address data.

[0008] The rectifying power supply device 2
A voltage of 200 V is input, and a rectified output of 270 V DC output from the output terminal 15 is turned on or off under the control of the power supply control device 1. The rectified output of DC 270 V output from the output terminal 15 of the rectified power supply 2 is DC
-Supplied to DC converter power supplies 3 and 4; D
The C-DC converter power supply devices 3 and 4 turn on or off the stabilized voltage output of +5 V under the control of the power supply control device 1.

Next, the operation of the serial bus interface power supply system having the configuration described above will be described with reference to FIG. 2, generator power control device 1, the power supply units 2 to 4 are a plurality of non-control power, transmits the on command, one of the power supply units 2 to 4 which has completed the on-operation of the abnormal 2 illustrates a communication procedure when the communication is performed. First, the power supply control device 1 transmits an ON command 101 to the rectification power supply device 2 via the serial data bus signal line 11, and instructs the rectification power supply device 2 to output a voltage of 270V DC.

Receiving the ON command 101, the rectified power supply 2 outputs a voltage of 270 V DC, and transmits the ON completion data 102 to the power supply controller 1 via the serial data bus signal line 11. The power control device 1 is a rectifier
Upon receiving the on-completion data 102 from the source device 2, D
The power supply control device 103 is transmitted to the C-DC converter power supply devices 3 and 4 via the serial data bus signal line 11, and is instructed to output a stabilized voltage of + 5V. D
The C-DC converter power supply devices 3 and 4 include a power control device 1
When receiving 03, it outputs a stabilized voltage of +5 V, and transmits ON completion data 104 and 105 to the power supply control device 1 via the serial data bus signal line 11, respectively.

[0011] When abnormality in the rectification power supply 2 occurs in this state, rectifier power supplies 2 abnormality signal line 1
An abnormality occurrence signal 106 is transmitted to the power supply control device 1 via the power supply control device 2. In addition, the rectifying power supply device 2 performs an abnormality process and
Disconnect the output of C270V. When the power control device 1 receives the abnormality occurrence signal 106, the power control device 1
07 via the abnormality detection report inhibit signal line 13 DC-DC
Transmitted to converter power supply devices 3 and 4. DC-DC
The converter power supply units 3 and 4 lose their inputs because the rectification power supply unit 2 has failed and have already cut off the output, and operate the internal abnormal voltage detection circuit. Therefore, the occurrence of an abnormality is not reported to the power supply control device 1.

Next, the power supply control device 1 includes a DC-DC converter.
Off command 108 for barter power supplies 3 and 4
Send DC-DC converter power supply devices 3 and 4
Performs a process of disconnecting the + 5V stabilized output upon receiving the off command 108, and outputs the off completion data 109 and 1
10 are transmitted to the power control device 1 via the serial data bus signal line 11, respectively. Power control unit 1 receives the off completion data 109 and 110, commutation electric
An off command 111 is transmitted to the source device 2 . Rectification
Upon receiving the off command 111, the power supply device 2
The process of disconnecting the 0 V output is performed. However, since the DC 270 V output has already been disconnected by the abnormal process, the off-completion data 112 is transmitted to the power control device 1 via the serial data bus signal line 11. With this, the power control device 1
Terminates all control operations.

[0013]

As described above, according to the serial bus interface power supply system of the present invention, a plurality of power supplies, a power control device for controlling the plurality of power supplies, the plurality of power supplies and the power control A serial data bus signal line connecting the device and, when an abnormality occurs in any of the plurality of power supply devices , the power supply device in which the abnormality has occurred;
And the abnormality occurrence signal line for transmitting the abnormality signal to et the power supply control device, when the power supply control device receives the abnormality occurrence signal, other than the power supply has occurred the abnormality
Sending an abnormality occurrence signal to the power supply unit to the power supply unit;
And then, is provided an abnormality detection report prohibiting signal line for transmitting the abnormality detection report prohibiting signal for prohibiting the signal, it is possible to reduce the control time required for serial data to the serial-parallel conversion, thereby two It is possible to prevent the occurrence of the next failure.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a serial bus interface power supply system according to the present invention.

FIG. 2 is a communication procedure diagram for explaining the operation of one embodiment of the serial bus interface power supply system according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Power supply control device 2 Rectification power supply 3 DC-DC converter power supply 4 DC-DC converter power supply 11 Serial data bus signal line 12 Abnormality occurrence signal line 13 Abnormality detection report prohibition signal line

Claims (1)

(57) [Claims] 1. A plurality of power supplies, a power supply control device for controlling the plurality of power supply devices, the serial data bus signal lines connecting the plurality of power supply and said power supply control device, the plurality of power supply devices When an error occurs in any of them
In, the abnormal and abnormality occurrence signal line for the power supply unit transmits an abnormality occurrence signal to the power supply control apparatus has occurred, when the power supply control device receives the abnormality occurrence signal, power source said abnormality occurs The power supply unit other than the device
A serial bus interface supply system characterized by comprising an abnormality detection report prohibiting signal line for transmitting <br/> abnormality detection report prohibiting signal for prohibiting the transmission of the abnormality occurrence signal to the power supply controller.