JPH01264527A - Power source alarm control system - Google Patents

Abstract

PURPOSE:To perform monitor suitable for a load by storing the predetermined value of a load current determined in response to the load in a circuit, and monitoring a malfunction with the value as a storage reference. CONSTITUTION:When device constituting data is input to a service processor 1, the processor 1 counts the total sum of a using current, and calculates a predetermined current value. The value is set to the set register 21 of a power source controller 2, and transmitted to the predetermined value holding circuit 35 of a power source unit 3. A current from a power source 32 is detected by a current detector 33, and compared with a predetermined value converted to an analog value through a D/A converter 36 by a comparator 37, and a controller 31 turns OFF the power source to output an alarm if it is malfunctioned.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a power supply alarm control method characterized in that the alarm signal is controlled by setting a specified value of the load current that generates the alarm signal in the power supply unit I. The purpose of the present invention is to provide a control method for a power supply unit that can respond to an accident by setting a specified current value, and includes a current detection circuit that detects a load current, a specified value storage circuit that stores the specified value of the load current, a power supply unit comprising: a comparison circuit that compares the current value detected by the current detection circuit with a specified value of the specified value storage circuit; and a control circuit that generates an alarm signal based on the output signal of the comparison circuit;
a monitoring device having means for storing the specified value of the load current in the specified value storage circuit, and the specified value of the load current stored in the monitoring device is set in the specified value storage circuit of the power supply unit. , configured to control an alarm signal generated by a control circuit of the power supply unit.

[Industrial application field]

The present invention is a power supply alarm control method characterized in that the alarm signal is controlled by setting a prescribed value of the load current that generates the alarm signal in the power supply unit. Generates an alarm signal when output.

It is necessary to determine excessive current for a load that generates an alarm signal for each load, and if the system configuration of the load equipment changes, the current value setting must be updated each time.

[Prior art and the problem to be solved by the invention] In conventional power supply units, a fuse with an alarm is installed at the output, and when the power supply load becomes excessive and exceeds the allowable current capacity, this fuse disconnects. At the same time, the alarm circuit is activated to generate an alarm signal and notify the system control unit of the abnormality.

However, when the load on the power supply unit changes as described above, since the response to the load current is fixed, it is not possible to set an optimal current alarm in accordance with the size of the load.

Therefore, even if a short-circuit accident occurs in the load, if the outflow current does not reach the specified current value set in the power supply unit, the power supply unit will not be concerned and will continue to flow current, expanding the fault area and causing the whole system to fail. This will result in serious losses.

The present invention was created in view of these points, and an object of the present invention is to provide a method of controlling a power supply unit in preparation for an accident by setting a specified current value suitable for the load.

[Failure to solve the problem]

In order to achieve the above object, a power supply unit includes a current detection circuit, a specified value storage circuit, a comparison circuit, a control circuit that generates an alarm signal based on the output signal of the comparison circuit, and a specified value of the load current. A power supply system is constituted by a monitoring device having means for storing the information.

[For production]

The specified value of the current required by the power supply load is stored in the specified value storage circuit of the monitoring device.

The specified value of the current of the device connected to the load current storage circuit of the monitoring device is stored, and when the device is determined, the monitoring device sends the specified current value to the power supply unit, and the specified value of the current is stored in the specified value storage circuit of the power supply unit. Set to .

The setting of this current specified value is done before the power supply unit (UNIS) starts operating.

The current detection circuit of the power supply unit constantly detects the load current,
A comparison circuit compares the current specified value stored in the specified value storage circuit and the detected current value.

The output of the comparator circuit is connected to a control circuit, and if the detected current value exceeds a current specified value, the control circuit generates an alarm signal.

In response to the alarm signal, the control section of the system takes measures such as stopping the power supply to the load or cutting off the input to the power supply unit to stop the entire system to which the power supply unit supplies power.

〔Example〕

Fig. 1 is a block diagram showing the configuration of an embodiment of the power supply alarm control method of the present invention, Fig. 2 is a block diagram showing an example of the configuration of the power supply unit of the present invention, and Fig. 3 explains the timing for setting the current specified value. Figure 4 is a diagram showing the power supply configuration for equipment testing and printed board testing.

As shown in Figure 1, in the power supply control system of an information processing system, a service processor (sv
P) 1 has the function of the above-mentioned monitoring device.

The service processor 1 has a magnetic disk device as an external storage circuit 11, and this magnetic disk device stores in advance data such as the operating current and operating conditions of equipment serving as a load of the power supply device.

The power supply control device 2 stores the power supply data of the service processor 1 in a setting register, and notifies the power supply unit 3 of the specified current value.

The current unit 1 to 3 is composed of one or more power supply units, and the power supply units are assigned according to supply voltage or device group.

Devices that serve as a load on the power supply unit include, for example, a central processing unit (CPU), a channel device (CH), and a main storage device (MS).
1 to 4 units, 1 to 100 units, and 1 to 4 units for U), etc., which vary depending on the system configuration.

When the equipment configuration of the information processing system is determined and the configuration data is input to the service processor 1, the service processor 1 calculates the total amount of current used by the equipment, adds the usage conditions of the equipment to I4, and calculates the total amount of current used by the information processing system. Calculates the current specified value that generates an alarm for each power supply unit when it is in operation.

Then, this value is set in the setting register 21 of the power supply control device 2 and the specified value storage circuit 3 of each power supply unit 3 is set.
Send on 5th.

With the current specified value set for each power supply unit in this manner, the service processor 1 instructs the power supply unit 3 to turn on the power via the power supply control device, and current is output to the load.

FIG. 3 is a block diagram showing an example of the configuration of the power supply unit 3 according to the present invention, in which the control circuit 31 of the power supply unit 3 starts the power supply section 32, and the current detection circuit 33 connects the current shunt to the output terminal. The output current value is always measured from the voltage across 34.

On the other hand, the setting register 21 of the power source theft device 2 sets the current specified value for each power supply unit 3 from the service processor 1 in a 16-bit shift register, and the current specified value for each power source unit 3 is set from the power supply control device 2 to each power source unit 3. When notified, the control circuit 31 writes the specified value and sends the current specified value stored in the a circuit 35 to the comparison circuit 3 via the DA conversion circuit 36.
In step 7, the current value is compared with the current value measured by the current detection circuit 33.

When the current detected by the current detection circuit 33 exceeds a specified value, the control circuit 31 sends out an alarm signal.

Note that if the current detection circuit 33 detects the current value as a digital value and the comparison circuit 37 compares the digital value with the digital value of the current specified value set in the specified value storage circuit 35, the DA conversion circuit 36 Can be omitted.

FIG. 3 shows a diagram illustrating the timing of setting the current specified value.

■ is the power-on period of the system component equipment, ■ is the operating period of the beam/service processor, ■ is the timing for setting the specified value in the specified value storage circuit, ■ is the period when the nervous processor instructs to turn on the power, and ■ is the power supply This is the output period.

That is, the specified value storage circuit 35 of each power supply unit 3
The setting of the current specified value stored in is performed before the service processor 1 instructs the power supply unit 3 to turn on the power.

FIG. 4(a) shows a device testing system, in which a service processor sets current specified values in two power supply units, and a tuna device to be tested is connected to each power supply unit.

Figure 4(b) shows the system for testing printed board units.
The test equipment has a processor and an external storage device, and the external storage device records each specified value of the printed board unit.
t L, power supply unit 1 bow set these specified values to prevent the mounted LSI elements from being destroyed or further damage to the printed board unit due to excessive current due to a failure of the printed board unit node. .

In addition, in the present invention, the power supply alarm control for excessive current is performed by applying the tree method to set the specified value of the voltage to be output to the load, and by providing a voltage detection circuit to control the output voltage from the specified value of the output voltage of the power supply unit. It goes without saying that it is also possible to detect isolation and generate an alarm signal.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, even if the equipment configuration of the load of an information processing system changes, a current regulation value that is suitable for the load is set, and an appropriate alarm is set in case of an overcurrent accident. It becomes possible to generate signals, and as a result, the reliability of the information processing system can be improved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the configuration of an embodiment of the power alarm control method of the present invention, Fig. 2 is a block diagram showing an example of the configuration of the power supply unit of the present invention, and Fig. 3 shows the timing of setting the specified current value. Explanatory diagrams, Figure 4 (al is a diagram showing the power supply configuration for equipment testing, Figure 4 f
bl is a diagram showing a power supply configuration for a printed board test. In the figure, 1 is a service processor, 3 is a power supply unit, 31 is a control circuit, 33 is a current detection circuit, 35 is a specified value storage circuit, and 37 is a comparison circuit.

Claims (1)

[Claims] A current detection circuit (33) that detects a load current, a specified value storage circuit (35) that stores a specified value of the load current, and a current value detected by the current detection circuit (33). a comparison circuit (37) that compares the specified value with the specified value of the specified value storage circuit (35);
), a control circuit (31) that generates an alarm signal based on the output signal of the comparison circuit (37), and a power supply unit (3) that stores the specified value of the load current in the specified value storage circuit (35). A monitoring device (1) having storage means, the specified value of the load current stored in the monitoring device (1) is set in the specified value storage circuit (35) of the power supply unit (3), and the power supply A power supply alarm control method characterized by controlling an alarm signal generated by a control circuit (31) of a unit (3).