JPH07152459A - Cooling controller - Google Patents

Abstract

PURPOSE:To reduce the noise of a fan for cooling in an information processing system to be constituted freely by selecting components such as an extended card. CONSTITUTION:Extended cards 150 and 151 are freely connected at need. A CPU 110 judges whether or not the extended cards 150 and 151 are connected. According to the connecting state of the extended cards, the CPU 110 decides the gas quantity of fans 180 and 181 required for cooling the components and seta it to a fan control register 160. A voltage switching circuit 171 variably controls the gas quantity of the fans 180 and 181 by a voltage. Since the gas quantity of the fans is decreased when no extended card is connected, noise is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing system in which the type and number of components such as a CPU, a memory, an expansion card and a hard disk drive can be selected from a plurality of options and configured. The present invention relates to a cooling control device for cooling components so that they operate normally.

[0002]

2. Description of the Related Art Generally, an information processing system is a CP.
Various components such as a board on which semiconductor components for performing respective processing such as U, memory, IO, and graphics are mounted, storage devices such as floppy disk drives and hard disk drives, and power supply devices that supply power to these devices. It consists of These components include
There are temperature conditions that guarantee its normal operation. Also,
The information processing system itself is set with temperature conditions that guarantee normal operation at a temperature at which the information processing system is assumed to be used.

For example, when the operating temperature condition for guaranteeing the normal operation of the information processing system is set to 0 to 40 ° C.,
When the information processing system is operated in the environment of 0 to 40 ° C., the individual components must be within the operating temperature conditions in which their own operations are guaranteed. When the operating temperature condition is not satisfied among the individual components at high temperature, it is necessary to forcibly cool the temperature by using a fan or the like to lower the temperature to satisfy the operating temperature condition.

A well-known example of a workstation, which is a typical information processing system, is the SPA of Sun Corporation.
RCstation 10 will be described as an example of a conventional cooling device for the workstation cooling device. SPARCstation10 is its instruction manual, "DeskTop SPARC Hardw
are Owner's Guide "(Sun Mi
crosystemsComputerCorpor
ation, October 1992), as shown in P61, P111, etc., has a structure as shown in FIG.

In FIG. 2, reference numeral 200 denotes a housing in which components are incorporated, 210 is a main board, and 221 is the first CP.
U card, 222 is the second CPU card, 231 is the first expansion card, 232 is the second expansion card, 23
3 is a third expansion card, 234 is a fourth expansion card, 241 is a first memory card, 242 is a second memory card, 243 is a third memory card, 244
Is the fourth memory card, 245 is the fifth memory card, 246 is the sixth memory card, 247 is the seventh memory card, 248 is the eighth memory card, 251
Is the first hard disk drive, 252 is the second hard disk drive, 260 is the floppy disk drive, 270 is the power supply, 281 is the first fan, 2
82 is the second fan, 283 is the third fan, 29
Reference numeral 1 is a power cable, and 292 is a hard disk / floppy disk cable.

[0006] The workstation is not a special-purpose machine having a limited purpose but a general-purpose machine used for various purposes. The calculation processing capacity, expanded functions such as graphics and networks, storage capacity, etc. required by each application are greatly different. Therefore, the CPU card can be used for the calculation processing capacity, the expansion card can be used for the expansion function, and the type and the number of memory cards and hard disk drives can be freely selected for the storage capacity so that the optimum configuration can be obtained for the intended use. It has a highly expandable structure.

On the main board 210, the CPU card 2
There are connectors for connecting 21, 222, expansion cards 231-234, and memory cards 241-248, and in the maximum configuration, 2 CPU cards, 4 expansion cards, and 8 memory cards can be connected. CPU card 22
The connectors for 1, 222 are arranged in two rows in parallel, and C
The connector for the PU card 222 is taller than the connector for the CPU card 221, and two CPU cards can be connected horizontally in two stages. The connectors for the expansion cards 231 to 234 are arranged in two rows in parallel, two for each.
32, 234 connectors are expansion cards 231, 233
It is taller than the connector for, and can connect two expansion cards horizontally in two stages with two expansion cards each.

Normally, one CPU card 221 is connected to the CPU card, but the second CPU card 222 is connected.
It is possible to increase the calculation processing capacity by connecting to a multiprocessor. Although the calculation processing capacity of the CPU is proportional to its operating frequency, a CPU card that operates at each frequency such as 33 to 50 MHz is prepared,
Appropriate computing power can be selected. Furthermore C
The type of PU itself can also be selected.

The expansion card is used to provide a function not implemented by the main board 210. Main board 2
In 10, the graphics function for displaying the processing contents on the display is not realized, and therefore one expansion card 233 is usually connected and the two-dimensional graphics processing is performed. When a stronger 3D graphics function is required for mechanical CAD, an expansion card for 3D graphics can be connected. When higher speed network function is required, expansion card for FDDI can be connected. If you want to connect a large capacity hard disk drive to the outside, you can connect an expansion card for SCSI.

A SIMM (Single Inline Mem) in which a plurality of DRAMs are mounted on the memory card.
A card called "ory Module" is used.
16M bytes S usually equipped with 4M bit DRAM
Two IMMs 241 to 242 are connected. If more memory is required depending on the application software used, SIMMs 243 to 248 can be connected to the remaining six connectors. It is also possible to connect a 64-Mbyte SIMM in which a 16-Mbit DRAM having a larger capacity is mounted.

As storage devices, there are hard disk drives 251, 252 and a floppy disk drive 260, which are connected to the main board 210 by a hard disk / floppy cable 292. The hard disk drives 251 and 252 are connected by a SCSI interface and controlled by the SCSI controller on the main board 210. The floppy disk drive 260 is controlled by the floppy disk controller on the main board 210.

Normally, one hard disk drive 251 is connected to the hard disk drive, but the storage capacity can be increased by connecting the second hard disk drive 252. Also, the type of the hard disk drive itself can be selected.

Reference numeral 270 denotes a power source, which is connected to the main board 210 and the hard disk drive 2 by a power cable 291.
51, 252, the floppy disk drive 260, and the main board 210, CPU cards 221, 22
2, expansion cards 231-234, memory cards 241-
Power is supplied to the 248, the hard disk drives 251, 252, and the floppy disk drive 260. Further, power is supplied to the fans 281-283.

The fans 281 to 283 are connected to the power source 270 and always operate at a constant rotation speed. Fan 2
81 to 283 from the power source 270 to the main board 21.
By blowing a certain amount of air in the direction toward 0, the main board 210, the CPU cards 221, 22
2, expansion cards 231-234, memory cards 241-
It is possible to cool the components themselves of 248, the hard disk drives 251, 252, the floppy disk drive 260, the power supply 270 and the atmosphere thereof.

[0015]

With the recent rapid progress in downsizing and price reduction of information processing systems, the information processing systems are rapidly spreading to the level of being used by individuals. As a result, what used to be centrally installed in a dedicated machine room is now distributed and installed on individual desks, and the information processing system and the person using it are in the same environment. Has come to exist.

With such changes, power consumption, heat generation, noise, etc. of the information processing system have become problems. The problems of power consumption and heat generation can be solved by increasing the power supply equipment and air conditioning equipment at the installation site, although there are problems such as installation cost.

However, it is difficult to reduce noise outside the information processing system as a symptomatic treatment, and it is necessary to reduce the noise of the information processing system itself.

The noise of the information processing system is generated from moving parts such as a hard disk drive, a floppy disk drive and a fan. Especially, the fan always operates during the operation of the information processing system, so noise is constantly generated,
The most annoying noise source. The noise level of the fan is determined by the number of fans, the number of rotations of the fan, the shape of the fan, and the disturbance of the wind generated by the fan due to obstacles.

Disturbances due to the shape of the fan and the obstacles of the wind generated by the fan are purely mechanical and will not be discussed here. The number of fans and the number of rotations of the fans are items that are determined depending on the amount of heat generated by each component of the information processing system and the operating temperature conditions. Instead of the calorific value, the power consumption is proportional to the calorific value. As the total power consumption of each component increases, the internal temperature of the information processing system rises, the number of components that do not meet the operating temperature conditions increases, and the number of fans and the number of fan rotations increase to increase the air volume and cooling capacity. Will be increased. Noise increases as the number of fans and the number of rotations of the fans increase.

Since the cooling device of the information processing system as described above has a structure in which the type and number of each component can be freely selected, the cooling device is designed assuming the maximum configuration. In other words, CPU card can be used C
Connect two PUs with the maximum power consumption that can use the type with the largest power consumption, and connect four expansion cards with the maximum power consumption determined by the specifications of the expansion card,
Even if eight memory cards with the highest power consumption of SIMMs that can be used are connected and two hard disk drives with the highest power consumption can be connected, each component is cooled sufficiently. There are as many fans and as many fans as possible.

However, this maximum configuration is a configuration in consideration of future expandability, and it is extremely rare to use the information processing system with this maximum configuration. New high-performance CP of the future, which is not in the practical stage at present
U, large-capacity memory, large-capacity hard disk drive, etc. are assumed, and the high cost of the multi-processor is limited to specific applications that require high computational processing power. The reason for this is that there are still few uses for expanding functions using expansion cards.

In other words, in the majority of applications, the cooling capacity of the fan is the maximum and the power consumption is large even though the type and the number of each component are the standard specifications and the power consumption is small. Since it corresponds to, it is in a state of excessive cooling. In other words, although the original noise generated by the cooling capacity required for most applications is low, unnecessary noise is generated due to unnecessary cooling.

In view of the above points, the present invention occurs in an information processing system that can be configured by freely selecting the type and number of constituent parts such as CPU, expansion card, memory, hard disk drive, etc. necessary for the purpose of use. An object of the present invention is to provide a cooling control device for an information processing system in which the noise level is as small as possible for cooling the selected and configured components.

[0024]

In order to solve the above-mentioned problems, the present invention provides a cooling control device for an information processing system, which is configured by selectively combining a plurality of components such as an expansion card. Component component determining means for determining the presence or absence of connection of each component constituting the processing system, a fan for blowing a wind to the component to cool the component, a fan air volume control means for changing the air volume of the fan, Based on the determination result of the air flow rate determination means for determining the air flow rate of the fan that secures the cooling capacity satisfying the temperature condition that ensures the normal operation of the component based on the determination result of the component flow rate determination means. And an air volume setting means for setting the fan air volume control means.

The component determining means may determine the type of each component forming the information processing system, or determine the operating state of each component forming the information processing system. But it's okay.

[0026]

According to the present invention, with the above configuration, the component determining means determines whether or not each component such as an expansion card constituting the information processing system is connected, and based on the result, the air volume determining means determines the component. The air volume of the fan that secures the cooling capacity to satisfy the temperature condition that guarantees the normal operation is determined, and the air volume is set by the air volume setting means to the fan air volume control means, and the air volume set by the fan air volume control means is set by the fan. Is controlled so that only the fan noise required to cool the connected components is generated.

[0027]

1 is a block diagram of an information processing system having a cooling control device according to an embodiment of the present invention. Figure 1
Information processing system has expandability with expansion cards and memory cards, which are the most common as expansion components,
It is possible to freely select and configure those types and numbers. Also,
The hard disk drive can also be freely selected and configured.

In FIG. 1, 110 is a CPU, 120 is a memory controller, and 121 is a memory controller 12.
0 is connected to the first memory card, 122 is the second memory card connected to the memory controller 120, 130 is an IO controller, 131 is a hard disk drive connected to the IO controller 130, 14
0 is a bus controller that connects the system bus to which the CPU 110 or the like is connected to an expansion bus; 150 is a first expansion card connected to the expansion bus; 150a is a ROM that holds information of the first expansion card 150; Reference numeral 151 is a second expansion card connected to the expansion bus, 151a is a ROM for holding information of the second expansion card 151, 160
Is a fan control register, 161 is an interrupt controller, 162 is a timer, 170 is a power supply, 171 is a fan voltage switching circuit, 180 is the first cooling fan, 18
Reference numeral 1 is a second cooling fan.

The expansion bus has two expansion connectors and can connect a maximum of two expansion cards 150 and 151. The expansion bus and expansion card have electrical and mechanical specifications, and maximum power consumption per expansion card. The total power consumption of desktop-type information processing systems including expansion cards is about 100 W, but the power consumption specified by expansion card specifications is about 20 W per card, and with two cards it is nearly half of the total power consumption. Occupy Therefore, the power consumption is almost doubled between the configuration in which no expansion card is connected and the configuration in which two expansion cards are connected.

When the CPU 110 starts the operation of the system,
The presence or absence of connection of each component is judged, and the configuration of the entire system is recognized. Now, it is assumed that the first expansion card 150 is connected and the second expansion card 151 is not connected.

The bus controller 140 is the CPU 110.
Is connected to the system bus to which the expansion card 150 is connected and the expansion bus to which the expansion card 150 is connected, and controls the system bus and the expansion bus, respectively. Also, the bus protocols of the system bus and the expansion bus are converted, and the access from the system bus is transmitted to the expansion bus and the access from the expansion bus is transmitted to the system bus.

The CPU 110 is the first expansion card 150.
Access the address space of. Bus controller 14
0 transmits the access from the CPU 110 to the expansion card 150. Since the expansion card 150 exists, it responds normally to this access.

Based on this response, the CPU 110 determines that the expansion card 150 is connected.

This time, the CPU 110 accesses the address space of the second expansion card 151. The bus controller 140 transmits the access from the CPU 110 to the connector that connects the expansion card 151. However, since the expansion card 151 does not exist, it does not respond to this access. The bus controller 140 determines that there is no response even after a certain period of time defined by the specifications of the expansion bus has elapsed, and determines that it is a “bus timeout”, and sends a “bus timeout” response to the CPU 110. By this response, CP
U110 determines that the expansion card 151 is not connected.

Through the above procedure, the CPU 110 can recognize that the expansion card 150 is connected and the expansion card 151 is not connected.

For fans of the same shape, the amount of air blown out by the fan is approximately proportional to the rotation speed of the fan. The noise generated by the fan is also substantially proportional to the rotation speed of the fan. By reducing the fan speed, the air volume and noise can be reduced. The rotation speed of the fan can be changed by the voltage applied to the fan. The rotation speed can be reduced by lowering the applied voltage.

The power supply 170 supplies the air volume required for cooling the information processing system when the information processing system is configured to the maximum,
The voltage that can be sent out by the fan 180 and the fan 181 is generated.

Therefore, a voltage corresponding to the air volume of the fan required when one expansion card is connected is set to the CPU 11
0 sets in the fan control register 160. The voltage switching circuit 171 converts a fan driving voltage supplied from the power supply 170 into a value set in the fan control register 160, and supplies the fan 180 and the fan 181 with the value.

Therefore, the fans 180 and 181 are
The expansion card 150 is connected and the expansion card 151 is not connected, and since it operates at a rotational speed that generates an air volume necessary for cooling the components, only a low noise corresponding thereto is generated.

Similarly, when no expansion card is connected, the fan control register 160 may be set to a voltage corresponding to the fan air volume required when no expansion card is connected. When two expansion cards are connected, the fan control register 16 outputs a voltage corresponding to the fan air volume required when two expansion cards are connected.
It should be set to 0.

Another method of reducing the air flow and noise of the fan is to reduce the number of operating fans. For example, when no expansion card is connected, the voltage of the fan 180 is set to the normal voltage and the voltage of the fan 18 is set to the normal voltage.
The fan control register 16 is set so that the voltage of 1 becomes 0V.
Set to 0. The voltage switching circuit 171 applies the voltage necessary for operating the fan 180 and does not apply the voltage to the fan 181. As a result, the fan 180 operates and the fan 181 does not operate.

In the above description, the power consumption specified by the expansion card specifications is about 20 W per card, but the actual expansion card power consumption varies from low power consumption to near specifications. For example, when an expansion card having a power consumption of 15 W is connected, the fan generates extra noise for cooling 15 W. If you know the actual power consumption of the expansion card, you can control the fan more accurately.

When the CPU 110 starts the operation of the system,
Determine the type of each component and recognize the overall system configuration. Now, the first expansion card 150 and the second expansion card 151 are both connected, and the power consumption of the expansion card 150 is 10 W and the power consumption of the expansion card 151 is 5 W.

The CPU 110 is the first expansion card 150.
Access the address space of. Since the expansion card 150 exists, it responds normally to this access. Based on this response, the CPU 110 determines that the expansion card 150 is connected, and the ROM 15 on the expansion card 150
Access 0a. Information on the expansion card 150 is stored in the ROM 150a. CPU110 is ROM
Information about the power consumption of the expansion card 150 is read from 150a.

This time, the CPU 110 accesses the address space of the second expansion card 151. Expansion card 1
Since 51 exists, it normally responds to this access. By this response, the CPU 110 causes the expansion card 1
51 is determined to be connected, and R on the expansion card 151
Access the OM 151a. Information of the expansion card 151 is stored in the ROM 151a. CPU110
Reads information about the power consumption of the expansion card 151 from the ROM 151a.

According to the above procedure, the CPU 110 can recognize that the expansion card 150 and the expansion card 151 are connected, that the power consumption of the expansion card 150 is 10 W and the power consumption of the expansion card 151 is 5 W.

Therefore, the CPU 110 sets, in the fan control register 160, a voltage corresponding to the air volume of the fan required when the expansion card of 10 W and the expansion card of 5 W are connected. The voltage switching circuit 171 is the power source 1
The fan drive voltage given from 70 is converted into a value set in the fan control register 160, and the fan 180
And give it to the fan 181.

Therefore, the fan 180 and the fan 181
Has a configuration in which an expansion card 150 having a power consumption of 10 W and an expansion card 151 having a power consumption of 5 W are connected, and operates at a rotational speed that generates an air volume necessary for cooling the components. It produces only the minimum noise suitable for the situation.

The information on the expansion card read from the ROM on the expansion card may be any information that can determine the air volume of the fan even if it is not the power consumption.

Similarly, regarding the components such as the memory and the hard disk drive, the fan can be controlled by determining the type of the connected components. Since the types of memory and hard disk drive connected to a specific information processing system are limited to some extent, a correspondence table between types and power consumption may be stored in a non-volatile storage device such as the hard disk drive 131. The procedure for determining the type of memory or hard disk drive will be described below.

The information processing system of FIG. 1 has two memory connectors, and a maximum of two memory cards 121,
122 can be connected. The memory cards 121 and 122 are controlled by the memory controller 120, and memory cards of 8 Mbytes and 32 Mbytes can be used.

Now, it is assumed that the first memory card 121 of 8 Mbytes and the second memory card 122 of 32 Mbytes are connected.

The CPU 110 is the first memory card 12
All "A" is written in the first address of the address space of 1. Next, the CPU 110 writes all “5” at an address obtained by adding 8 Mbytes to the start address of the address space of the memory card 121. Since the memory card 121 is mounted with only 8 Mbytes, no memory is mounted at this address, and the upper address of 8 Mbytes or more space is ignored and all “5” is written in the top address of the memory card 121. Be done. And the CPU 110
Reads the data of the head address of the memory card 121. Since all “5” is read instead of all “A”, the CPU 110 determines that the memory card 121 is an 8 Mbyte memory card.

This time, the CPU 110 writes all "A" at the head address of the address space of the second memory card 122. Next, the CPU 110 writes all “5” at an address obtained by adding 8 Mbytes to the start address of the address space of the memory card 122. Memory card 1
Since 22 is mounted with 32 Mbytes, all “5” is written in this address. And the CPU 110
Reads the data of the head address of the memory card 121. Since all “A” is read, the CPU 110 determines that the memory card 121 is a 32 Mbyte memory card.

Through the above procedure, the CPU 110 can recognize that the memory card 121 is 8 Mbytes and the memory card 122 is 32 Mbytes.

The hard disk drive 131 is controlled by the IO controller 130 and is connected by the SCSI interface. The SCSI interface is provided with an "Inquiry command" for inquiring attribute information. The CPU 110 causes the IO controller 130 to SCS the hard disk drive 131.
Set to issue "Inquiry command" of I. In response to the command issued by the IO controller 130, the hard disk drive 131 returns attribute information such as its type. The IO controller 130 receiving the attribute information generates an interrupt. IO controller 13
Interrupt controller 1 that received an interrupt from 0
Reference numeral 61 interrupts the CPU 110. CPU11
0 checks the state of the interrupt controller 161 to know that the IO controller 130 is generating an interrupt. The CPU 110 accesses the IO controller 130 and reads the result of the “Inquiry command”.

Through the above procedure, the CPU 110 can recognize the type of the hard disk drive 131.

Therefore, as in the case of the expansion card,
The fans 180 and 181 operate according to the type of memory card or hard disk drive connected, and operate at a rotational speed that generates an amount of air required to cool the components, so it is suitable for the situation at that time. It produces only minimal noise.

In the above description, it has been stated that the power consumption stipulated by the specifications of the expansion card is about 20 W per card, and the actual power consumption of the expansion card varies from low power consumption to near specifications. However, for example, the power consumption is 5
Even W expansion cards consume less than 5W when not in operation. Assuming that the power consumption when the expansion card is not operating is 1 W, it means that the fan generates extra noise for cooling 4 W. If you know the expansion card is not working and the actual power consumption at that time, you can control the fan more accurately.

When the system is operating, the CPU 110 determines the operating state of each component and recognizes the operating state of the entire system. Now, assume that the power consumption when the first expansion card 150 is connected and the expansion card 150 is operating is 10 W, and the power consumption when it is not operating is 5 W.

The CPU 110 accesses the address space of the first expansion card 150 at the start of system operation. Since the expansion card 150 exists, it responds normally to this access. By this response, the CPU 11
0 determines that the expansion card 150 is connected, and accesses the ROM 150a on the expansion card 150. ROM
The information of the expansion card 150 is stored in 150a. The CPU 110 uses the ROM 150a to the expansion card 15
Information regarding the power consumption when 0 is operating and the power consumption when not operating is read.

When the expansion card 150 is operating,
The interrupt generated by the expansion card 150 is transmitted to the CPU 110 via the interrupt controller 161. CP
When the U110 receives an interrupt, it checks the interrupt controller 161 to know that the expansion card 150 is generating an interrupt, and determines that the expansion card 150 is operating.

By the above procedure, the CPU 110 can recognize that the expansion card 150 is operating and the power consumption of the expansion card 150 is 10W.

Therefore, the CPU 110 sets, in the fan control register 160, a voltage corresponding to the air volume of the fan required when the expansion card having the power consumption of 10 W is connected.

The voltage switching circuit 171 outputs the voltage for driving the fan, which is supplied from the power source 170, to the fan control register 1
Converted to the value set to 60, Fan 180 and Fan 1
Give to 81.

When the expansion card 150 is not operating, the expansion card 150 does not generate an interrupt. CPU
110 measures a certain time by a timer 162, and if the expansion card 150 does not generate an interrupt during that time, it is determined that the expansion card 150 is not operating.

By the above procedure, the CPU 110 can recognize that the expansion card 150 is not operating and the power consumption of the expansion card 150 is 5W.

Therefore, the CPU 110 sets, in the fan control register 160, a voltage corresponding to the air volume of the fan required when the expansion card having the power consumption of 5 W is connected. The voltage switching circuit 171 converts a fan driving voltage supplied from the power supply 170 into a value set in the fan control register 160, and supplies the fan 180 and the fan 181 with the value.

Therefore, the fans 180 and 181
Is a configuration in which an expansion card having a power consumption of 10 W is connected when the expansion card 150 is operating, and a configuration in which an expansion card having a power consumption of 5 W is connected when the expansion card 150 is not operating. In order to operate at the number of rotations that generates the air volume necessary for cooling the components,
It emits only the minimum amount of noise suitable for each situation.

Although the example in which the operating state of the component is judged by the presence / absence of interruption has been shown, the determination may be made by notifying when the software controlling the operation of the component is called.

[0071]

As described above, according to the present invention,
When the information processing system is configured by freely selecting the type and number of components such as expansion cards, a component determining means for determining whether or not each component configuring the information processing system is connected, and a component The noise generated by the fan can be reduced by providing an air flow rate determining unit that determines the air flow rate of the fan that secures the cooling capacity for satisfying the temperature condition that guarantees the normal operation of the fan and a fan air flow rate control unit that changes the air flow rate of the fan. , It can be kept low to a level commensurate with the air volume required to cool the connected components.

If the component is not operating,
The noise can be further suppressed by the amount of decrease in the amount of heat generation, and its practical effect is great.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an information processing system including a cooling control device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of an information processing system including a conventional cooling control device.

[Explanation of symbols]

 110 ... CPU 120 ... Memory controller 121 ... Memory card 122 ... Memory card 130 ... IO controller 131 ... Hard disk drive 140 ... Bus controller 150 ... Expansion card 150a ... ROM 151 ... Expansion card 151a ... ROM 160 …… Fan control register 161 …… Interrupt controller 162 …… Timer 170 …… Power supply 171 …… Voltage switching circuit 180 …… Fan 181 …… Fan

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H05K 7/20 J

Claims (3)

[Claims] 1. A cooling control device for an information processing system configured by selectively combining a plurality of components such as an expansion card, and determining whether or not each component forming the information processing system is connected. Component determining means, a fan that blows air to the component to cool the component, a fan air volume control means that changes the air volume of the fan, and a normal operation of the component based on the determination result of the component determining means. And an air flow rate setting means for setting the fan air flow rate control means based on the determination result of the air flow rate determination means, the air flow rate determination means for determining the air flow rate of the fan that secures the cooling capacity satisfying the temperature condition that guarantees the A cooling control device characterized by the above. 2. The cooling control device according to claim 1, wherein the component determining means determines the type of each component forming the information processing system. 3. The cooling control apparatus according to claim 1, wherein the component determining means determines the operating state of each component forming the information processing system.