JPS6375811A - Power-on control system for electronic device - Google Patents

Abstract

PURPOSE:To prevent the breakage of elements by providing plural unit devices which include power supply parts and power supply control parts and are cooled with water and stopping power-on of the device if dew condensation occurs on elements in this device. CONSTITUTION:This electronic device consists of plural unit device 1001-100n, a cooling water circulating device, and a system power supply controller 300. Each unit device 100 consists of an LSI element 113 thermally coupled to a cooling tube 112, a processing part 110 including a dew condensation sensor 114 which detects the dew condensation element of this element 113, a power supply part 120 of the processing part 110, and a unit power supply control part 130. The cooling water circulating device 200 consists of a water temperature adjusting device 210, a control part 240, etc. If the dew condensation sensor 114 detects dew condensation when a mode switching signal which designates the local mode is supplied, a power-on signal is not supplied to the power supply part 120 and the operation of the processing part 110 is stopped.

Description

[Detailed Description of the Invention] [Summary] In an electronic device consisting of a plurality of water-cooled unit devices including a power supply section and a power supply control section, when an element in this unit device has condensation, this unit device side It is now impossible to turn on the power.

[Industrial application field]

The present invention relates to a plurality of water-cooled units such as a processing unit, a storage unit, etc.)! In an electronic device configured by combining units, the L
This invention relates to a power supply control method based on the condensation state of elements such as SI.

[Conventional technology]

FIG. 2 shows an example of the configuration of the above electronic device to which the present invention is applied, in which a plurality of unit devices 1001
．． . . . 100n, a cooling water circulation device 200 that supplies cooling water to these unit devices, and a system power supply control device 300 that controls the power sources of these unit devices and the cooling water circulation device.

These unit devices 1001...-10On are functionally different in that each processing section 110 may have different processing functions such as data processing or storage, but all of them are connected via a cold plate 111. A processing unit 110 includes an element 113 such as an LSI thermally coupled to a cooling pipe 112 from the cooling water circulation system 200, and a dew condensation sensor 114 that detects the condensation state of these elements, and supplies power to this processing unit. They are the same in that they consist of a power supply section 120 and a unit power supply control section 130 that controls power-on of this power supply section.

This unit power control section 130 has a remote mode in which power is turned on from the system power control device, or a power on switch 13 provided in this unit power control section.
A power-on operation that instructs to turn on the power when a mode switching signal instructing one of the worker 2 modes performed by 1 is sent from the line 141, and this mode switching signal instructs the system power supply control device to turn on the power. Signals are input from lines 1.42 by the respective system power controllers. This figure also shows a signal line 143 for notifying the system power supply control device 300 that the processing section 110 of the unit device 100 is in a condensed state.

The cooling water circulation device 200 includes a water temperature adjustment device 210 that adjusts the temperature of the cooling water, a pump 220 that circulates the cooling water whose water temperature has been adjusted by the water temperature adjustment device through the unit device 100, and a pump 220 that adjusts the temperature of the cooling water. The control unit 240 controls the water temperature adjustment device and the pump based on the output of the water temperature sensor 230 that detects the water temperature, the condensation signal indicating the condensation state from each processing unit, and the control signal from the system power supply control device 300. I'm here.

In such an electronic device, a cooling water circulation device 200
The control unit 240 of each unit device 100 grasps the condensation state of these unit devices based on the condensation signal from the condensation sensor 114 and reports it to the system power supply control device 300, and the system power supply control device monitors the condensation state of the unit devices. It will not send a power-on signal to the unit device. In such a case, the cooling water circulation device 200 adjusts the temperature of the cooling water to bring the temperature of the processing section 110 of the unit device to about room temperature, and the condensation state is canceled and the condensation sensor 1
14 is no longer output and a ready signal is supplied from the control section 240 of the cooling water circulation device to the system power supply control device 300, a power-on signal is sent to each unit device.

[Problem that the invention seeks to solve]

However, when testing the unit device 100, for example, when a mode switching signal instructing the local mode is sent from the system power control device 300 through the line 141, the unit power control section 13 of this unit device
The unit device can be powered on by the power-on switch 131 provided at 0, but at this time, even if a signal indicating the condensation state is sent from the cooling water circulation device 200 to the system power supply control device 300, the condensation state remains. When the power of the unit device is turned on, the processing unit 111
Elements 113 such as LSIs inside may be destroyed or deteriorated.

[Means for solving problems]

FIG. 1 is a diagram showing the configuration of a unit power supply control section (130 in FIG. 2 above) for explaining the principle of the power-on control method of the present invention. The same reference numerals as in the figure are given.

In FIG. 1, the unit power supply control section 130 is provided with a three-person AND circuit 132, and one input terminal of this AND circuit is supplied with a mode switching signal from the system power supply control device 300 via a line 141. , the other input terminal is set to “1” via the power on switch 131.
It is configured to be supplied with a level potential, and its inverting input terminal is supplied with the output of the dew condensation sensor.

The output of this AND circuit 132 is supplied to one input terminal of an OR circuit 133 to which a power-on signal from the system power supply control device is applied to the other input terminal. The output is supplied to the power supply unit 120 as a power-on signal.

[For production]

When a mode switching signal specifying the local mode is supplied from the system power supply control device 200 to one of the input terminals of the input AND circuit 132 via the line 141, the condensation sensor is not detecting condensation and its output is If the level is “0”, the power on switch 131 is closed and the power on signal is sent to the power supply section 120 (
(FIG. 2), and this power supply section supplies power to the processing section 110 to start processing in this unit device 100.

If the dew condensation sensor detects dew condensation, its output will be at the "1" level, so the three-person AND circuit 132, which is supplied with this output to the inverting input terminal, is in a cut-off state, and the output of this AND circuit is Since the signal becomes "0" level, the power-on signal is not supplied to the power supply section 120, and therefore the processing section 110 does not operate. Note that it is obvious that even if condensation occurs during the period when the power-on signal is being sent to the power supply section 120 as described above, the power-on signal is cut off in the same manner as described above.

〔Example〕

FIG. 3 shows an embodiment of the unit power supply control section to which the power-on control method of the present invention is applied. In the remote mode in which the power supply is controlled by the system power supply control device, the mode switching signal line 141 is set to "0". ” level, and the output of inverter l is at the “1” level.

In this state, when the system power-on signal becomes "]", the output of the AND circuit 2 becomes "1", and the output from the OR circuit 3 becomes "1".
A level power-on signal is sent to the power supply unit 120 (FIG. 2) to supply power to the processing unit 110 and start the processing unit.

When the local mode signal line becomes "1" level, this unit power supply control section starts operating in local mode, and the output of inverter 1 becomes "0", so the output of AND circuit 2 becomes the level of the system power-on signal. It is always “0” regardless of the

When this local mode signal line becomes "1", the output of the AND circuit 6 becomes determined by the signal from the local power supply switch 131.

Here, when this switch 131 is turned on, the AND circuit 6 outputs "1", and if the output of the NAND circuit 4 is "1", a power-on signal is sent to the power supply section via the AND circuit 7 and the OR circuit 3. , this power supply section supplies power to the processing section.

At this time, if the processing section is in a dew condensation state, "l" is output from the flip-flop circuit 5 set by the output of the dew condensation sensor.
" signal is supplied, so the output of the NAND circuit 4 becomes "0" with the local mode signal "1", the output of the AND circuit 7 becomes "0"', and the power-on signal also becomes "0".
Therefore, the power supply to the processing unit 110 is cut off.

This embodiment further includes an inverter 8 to which a local mode signal is applied, and an AND circuit 9 to which the output of this inverter 8 and a signal from the flip-flop circuit 5 are applied, so that the local mode signal is "0". ”, that is, when the power supply control of the processing section is set to be controlled by the system power control device, an alarm signal is sent from the AND circuit 9 to the system power control device. It is composed of

〔Effect of the invention〕

According to the present invention, in the remote mode in which power-on of the unit device is controlled by the system power control device, if there is condensation on the unit device, the condensation state is reported to the system power control device via the cooling water circulation device. The power is not actually turned on until this condensation state is removed. However, even if the condensation sensor generates a detection output due to an erroneous detection of the condensation sensor after the power is turned on, the system power control device continues to supply power based on other information or the fact that condensation does not actually occur after startup. It is possible to control the power supply by determining whether or not to use the power supply.

In addition, when in local mode, if the condensation sensor detects condensation, power cannot be turned on, thereby achieving the special effect of preventing deterioration or destruction of elements, etc. .

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of a unit power supply control section for explaining the present invention in detail, FIG. 2 is a diagram showing the configuration of a system to which the present invention is applied, and FIG. 3 is a diagram showing a unit to which the present invention is applied. It is a figure showing an example of a power supply control part. 100 is a unit device, 200 is a cooling water circulation device, 30
0 is a system power supply control device, 110 is a processing section, 120 is a power supply section, 130 is a unit power supply control section, 112 is a cooling pipe, 113 is an element, and 114 is a dew condensation sensor.

Claims (1)

[Claims] A cooling water circulation device (200), and a cooling pipe (112) from this cooling water circulation device (200).
A dew condensation sensor (114) detects the dew condensation state of an LSI-like element (113) thermally coupled to the
a processing unit (110) that may have different processing functions such as data processing or storage, a power supply unit (120), and a unit power control unit (130) that controls power supply to the power supply unit. Multiple unit devices including (100_1
, ......100_n), and a system power control device (300) that controls power supply to these unit devices and switches power supply to this unit device. The unit power supply control section generates a power-on signal to the power supply section in response to a power-on signal from the system power supply control device, and is also supplied with a signal for switching power-on to this unit device from the system power supply control device. 1. A power-on control method for an electronic device, wherein the power-on signal is generated only when the dew condensation sensor detects no condensation.