JPH08314578A - Electronic device of multiprocessor - Google Patents

Abstract

PURPOSE: To operate an air conditioning system corresponding to its cooling capacity by degrade-operating the system when the capacity of the system is temporarily deteriorated and automatically return to a normal operation when the capacity returns to be normal. CONSTITUTION: Plural processor part 2 are respectively provided with a temperature sensor 5 and a power supply part 4 and connected with a system control part 6 arithmetic-processing and power-supply-controlling an electronic device respectively by signal wires 7 and 8. The system control part 6 monitors the temperature of each processor part 2 and when the temperature rises not less than some regulated value, stops the arithmetic processing of a corresponding logical part 3 and turns off the power supply to operate the system corresponding to a cooling wind supplied to the whole electronic device. On the other hand, the temperature is restored to a normal condition and after some regulated time, the stopping processor parts 2 are started to operated one by one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiprocessor type electronic device, and more particularly to power supply control.

[0002]

2. Description of the Related Art A conventional multiprocessor type electronic device is shown in FIG. This multiprocessor type electronic device 2
Reference numeral 9 denotes a plurality of processor units 22 and a system control unit 26.
Consists of.

Each processor unit 22 has a logic unit 23, a power supply unit 24, a fan 30, and a temperature sensor 25. The temperature sensor 25 is connected to the power supply section 24 by a signal line 27. The power supply unit 24 is connected to the system control unit 26 by a signal line 28. The logic unit 23 is forcibly air-cooled by the fan 30 with cold air from under the floor.

The electronic device 29 includes a processor unit 22 when cold air from below the floor cannot be obtained due to an abnormality of the air conditioner 21.
Each time, the temperature sensor 25 detects the leeward temperature of the logic unit 23, and the power supply unit 24 of the logic unit 23 of the processor unit 22 that has reached a high temperature is turned off. Therefore, when one of the air conditioners 21 fails and the power supply device 29 does not have the cooling capacity as a whole,
Since the temperature of the intake air rises and the temperature of the air that has cooled the logic unit 23 rises, the temperature exceeds the specified temperature of each processor unit 22, and the entire electronic device is turned off.

[0005]

In the above-mentioned conventional electronic device, the temperature of the front processor rises when the capacity of the air conditioner deteriorates, and when the temperature reaches a certain specified temperature, the front processor almost disappears. At the same time, there is a problem of abnormal stop.

[0006]

An electronic device according to the present invention comprises a plurality of processor units for performing arithmetic operations and a system control unit for controlling the operation of the entire electronic device. The processor unit is controlled by cooling air from under the floor. In a multiprocessor type electronic device equipped with a fan for cooling, a temperature sensor for detecting a suctioned air temperature is provided under the processor unit, and a power ON instruction from the system control unit,
The system control unit has a power supply unit having a function of turning on / off according to a power-off instruction, and the system control unit inputs temperature data from a temperature detection circuit for inputting a signal of the temperature sensor of each processor unit to output the temperature data. It is characterized by comprising a power supply control unit having means for comparing the amount of change in time units with a predetermined value and means for outputting an ON / OFF signal to the power supply of the processor unit according to the comparison result.

[0007]

The present invention will be described below with reference to the drawings. FIG. 1 shows a multiprocessor type electronic device 9 of the present invention and its installation environment. The electronic device 9 includes a plurality of processor units 2 and a system control unit 6, and is cooled by the air conditioner 1.

The system control section 6 comprises a power supply control section 11 and a temperature detection circuit 12, and the temperature detection circuit 1
2 is connected to the temperature sensor 5 of each processor unit 2 by the signal line 7, and the power supply control unit 6 is connected to the power supply unit 4 of each processor unit 2 by the signal line 8.

Each processor unit 2 includes a fan 10 for cooling the logic unit 3 with cooling air from the underfloor, a power supply unit 4 for supplying power to the logic unit 3, and a temperature sensor 5 connected to a temperature detection circuit 12. Have.

FIG. 2 is a flow chart of temperature control in this electronic device. During operation, the detection signal of each temperature sensor 5 is measured by the temperature detection circuit 12 in the system control unit 6 (S1), and temperature data is obtained. Is output to the power supply controller 11. The power supply control unit 11 monitors the temperature of each processor unit 2 (S2) and compares the temperature change with a predetermined value. (S3 to S6). If it is normal, the processor will not be turned off.

Next, when the capacity of the air conditioner 1 decreases and the temperature of the cooling air rises, the intake air temperature, which has been temperature-controlled at the temperature t _{0 as} shown in FIG. 3A, rises. This is recognized by the power supply control unit 11 as described above (S
3) The case will be described. The power supply control unit 11 outputs a power OFF signal on the signal line 8 connected to the power supply unit 4 of the processor unit 2 in a predetermined order, and as shown in b and c of FIG. The processor is turned off one by one until the increase in the value decreases and this value becomes less than or equal to the predetermined increase amount, and when the value falls below the specified value, the OFF operation is stopped (S7, S8, S
3, S4).

When the capacity of the air conditioner 1 is restored,
When the intake air temperature decreases as shown in FIG. 3B, the power supply control unit 11 outputs the power ON signal on the signal line B8 connected to the power supply 4 of the processor unit 2 in a predetermined order. Operate the processor unit 2 (S
5, S6, S9, S10). Then, the amount of decrease in the intake air temperature per hour changes as shown in e of FIG. 3, and when the power supply control unit 11 recognizes it and the amount of decrease is larger than a certain specified value, it is compared with another processor unit 2. As described above, the power ON signal is output to start the operation. The power supply control unit 11 stops the ON operation of the processor unit 2 when the intake air temperature rises above a certain value or when the power of all the processor units 2 is turned ON and the intake air temperature is controlled to t ₀ .

FIG. 3g shows that when the capacity of the air conditioner 1 is reduced while all the processor units 2 are operating, the O of the processor units is reduced.
The suction air temperature when the FF operation is not performed is shown. In FIG. 3, t ₁ is the maximum value of the intake air temperature for preventing the logic unit 3 of the processor unit 2 from failing or the reliability from decreasing, and when the intake air temperature rises significantly, the processor unit 2 described above is used. It is also possible to turn off a plurality of units by the OFF operation of.

FIG. 4 shows the power supply control unit 11 and the temperature detection circuit 1.
2 shows a detailed block diagram of FIG. In FIG. 4, MPU15
Is connected to the I / O 19, the memory 16 and the A / D converter by a signal line, and operates according to a program (a flowchart of which is shown in FIG. 2) stored in advance in the memory 16. The I / O 19 is connected to the power supply of the processor unit 2 by the signal line 8 and outputs a power ON signal and an OFF signal.

The temperature detecting circuit 12 is connected to the M of the power control unit 11.
It is controlled by the PU 15 and is connected to the temperature sensor 5 of each processor unit 2 by the signal line 7, and the signal from the temperature sensor 5 is connected to the A / D converter 17 one by one by the multiplexer 18. A / D converter 17
Converts the input signal to digital temperature data and M
Output to PU.

[0016]

As described above, according to the present invention, in the multiprocessor type electronic device, the change of the intake air temperature of the processor unit is monitored, and the power supply of each processor unit is individually turned on / off by the system control unit. Thus, even if the capacity of the air conditioner is reduced, continuous operation without stopping the entire system can be realized, and the number of processors suitable for the reduced cooling capacity can be operated.

Further, when the capacity of the air conditioner is restored, the number of operating processors can be increased by one by recognizing the change in intake air temperature and the change can be returned to the normal operating state.

[Brief description of drawings]

FIG. 1 is a block diagram of one embodiment of the present invention.

FIG. 2 is a flowchart of temperature control according to the embodiment shown in FIG.

FIG. 3 is a correlation diagram of the intake air temperature of the embodiment shown in FIG. 1 during one hour.

FIG. 4 is a detailed view of the embodiment shown in FIG.

FIG. 5 is a block diagram of a conventional electronic device example.

[Explanation of symbols]

 1 Air-conditioner 2 Processor part 3 Logic part 4 Power supply part 5 Temperature sensor 6 System control part 7 Signal line 8 Signal line 9 Electronic device 10 Fan 11 Power supply control part 12 Temperature detection circuit 15 MPU 16 Memory 17 A / D converter 21 Air conditioning Machine 22 Processor section 23 Logic section 24 Power supply section 25 Temperature sensor 26 System control section 27 Signal line 28 Signal line 29 Electronic device 30 Fan

Claims (1)

[Claims] 1. A multiprocessor type including a plurality of processor units for performing arithmetic operations and a system control unit for controlling the operation of the entire electronic apparatus, wherein the processor unit includes a fan for cooling with cooling air from under the floor. In the electronic device, a temperature sensor that detects a suction air temperature and a power supply unit that has a function of turning on / off according to a power-on instruction and a power-off instruction from the system control unit are provided below the processor unit. The system control unit receives temperature data from a temperature detection circuit that receives a signal from the temperature sensor of each processor unit, compares the amount of change in time units of the temperature data with a predetermined value, and the comparison result. Is configured by a power control unit having means for outputting an ON / OFF signal to the power supply of the processor unit. Multi-processor type electronic device according to symptoms.