JPH0480407B2 - - Google Patents

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, it is necessary to I made it impossible to turn on the power.

[Industrial application field]

The present invention provides an electronic device configured by combining a plurality of water-cooled unit devices such as a processing device unit and a storage device unit. The present invention relates to an electronic device that controls turning on of power to the device.

[Conventional technology]

FIG. 2 shows an example of the configuration of the above-mentioned electronic device to which the present invention is applied, and shows a plurality of unit devices 100 ₁ . . . 100n, a cooling water circulation device 200 that supplies cooling water to these unit devices, and ,
It consists of a system power control device 300 that controls the power supplies of these unit devices and the cooling water circulation device.

Although the unit devices 100 ₁ ... 100 n are functionally different in that the respective processing sections 110 may have different processing functions such as data processing or storage, they all use the cold plate 111 to provide the cooling. A processing section 110 that includes an element 113 such as an LSI thermally coupled to a cooling pipe 112 from the water circulation device 200 and a dew condensation sensor 114 that detects the condensation state of these elements, and a power supply section that supplies power to this processing section. 120, and a unit power supply control section 13 that controls power-on of this power supply section.
They are the same in that they consist of 0.

This unit power control section 130 has a signal from a mode changeover switch 134 for switching between a remote mode in which power is turned on from the system power control device and a local mode in which power is turned on by a power on switch 131 provided in this unit power control section. (mode switching signal) is output to the system power supply control device through line 141. Further, when this mode switching signal is in the remote mode, a power-on signal is input from the system power supply control device through line 142. Note that this figure 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 dew condensation state.
is also shown.

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.
A control unit that controls the water temperature adjustment device and the pump based on the output of the water temperature sensor 230 that detects the temperature of the cooling water, the condensation signal indicating the condensation state from each processing unit, and the control signal from the system power supply control device 300. 240.

In such an electronic device, the control section 240 of the cooling water circulation device 200 controls each unit device 100.
The condensation state of these unit devices is grasped by the condensation signal from the dew condensation sensor 114 of the unit device, and is reported to the system power supply control device 300, and the system power supply control device sends a power-on signal to the unit device while the condensation state of the unit device is maintained. There's nothing to do. If condensation is detected by the condensation sensor 114, the cooling water circulation device 200 controls the temperature of the cooling water to be higher than room temperature to create an environment where no condensation occurs. The dew condensation sensor 114 is activated when the dew condensation state is released.
When the output of the cooling water circulation device disappears, a ready signal is notified from the control section 240 of the cooling water circulation device to the system power supply control device 300, and upon receiving this notification, the system power supply control device 300 is configured to send a power-on signal to the unit device. ing.

[Problem that the invention seeks to solve]

However, when testing the unit device 100, for example, if the mode changeover switch is in the local mode, the power to the unit device can be turned on using the power on switch 131 provided in the unit power control section 130 of this unit device. In this case, for example, a signal indicating the condensation state from the cooling water circulation device 200 is sent to the system power supply control device 3.
00, the power to the unit device is turned on with condensation still on, and the inside of the processing section 111 is
Elements 113 such as LSIs may be destroyed or deteriorated.

[Means for solving problems]

Figure 1 shows a unit power supply control section (130 in Figure 2 above) for explaining the principle of the electronic device of the present invention.
2 is a diagram showing the configuration of FIG. 2, in which components corresponding to those in FIG. 2 are given the same reference numerals as in FIG.

In FIG. 1, the unit power supply control section 130 is provided with a 3-input AND circuit 132, one input terminal of this AND circuit is supplied with a mode switching signal from a mode switching switch, and the other input terminal is supplied with a mode switching signal from a mode switching switch.
The two input terminals are configured to be supplied with a "1" level potential via the power supply switch 131, and the inverting input terminal thereof 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.

[Effect]

When the local mode is instructed by the mode selector switch to one of the input terminals of the input AND circuit 132, if the condensation sensor does not detect condensation and its output is at "0" level, the power supply switch 131 By closing the OR circuit 13
3, the power supply signal is sent to the power supply section 120 (Fig. 2).
The power supply unit supplies power to the processing unit 110 to start processing in the unit device 100.

If the dew condensation sensor detects dew condensation, its output will be at the "1" level, so this output will be sent to the 3-input AND circuit 1 that is supplied to the inverting input terminal.
32 is in a cut-off state, and the output of this AND circuit is at the "0" level, so the power-on signal is the power supply part 1.
20, and therefore the processing unit 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 a unit power supply control section to which the electronic device 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 is at the "0" level. , the output of inverter 1 is at the "1" level.

In this state, when the system power-on signal becomes "1", the output of the AND circuit 2 becomes "1", and the OR circuit 3 sends a "1" level power-on signal to the power supply section 1.
20 (FIG. 2) and supplies power to the processing section 110 to start up the processing section.

When the mode switching signal line goes to the "1" level, this unit power supply control section operates in local mode, and the output of the inverter 1 goes to "0", so the output of the AND circuit 2 goes to 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", the AND circuit 7 and the OR circuit 3
A power-on signal is sent to the power supply unit via the power supply unit, and the power supply unit supplies power to the processing unit.

At this time, if the processing section is in a dew condensation state, a "1" signal is supplied from the flip-flop circuit 5 which is set by the output of the dew condensation sensor, so the output of the NAND circuit 4 is "1" due to the "1" of the local mode signal. 0", the output of the AND circuit 7 becomes "0", the power-on signal also becomes "0", and the power supply to the processing section 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 the inverter 8 and a signal from the flip-flop circuit 5 are applied, so that the local mode signal is set to "0". In other words, when the power supply control of the processing unit 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 configured.

〔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 do so.

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 principle of the present invention, 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 the configuration of 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, 300 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)

[Scope of Claims] 1. In an electronic device including a plurality of unit devices cooled by a common cooling water circulation device and whose power-on is controlled by a common system power control device, each unit device , a processing section including an electronic element thermally coupled to a cooling pipe from a cooling water circulation device and a dew condensation sensor that detects a condensation state of these electronic elements; a power supply section that supplies power to this processing section; a power-on switch that instructs to turn on power to the unit; an AND circuit to which the condensation detection signal from the condensation sensor and the local power-on signal from the power-on switch are respectively applied to input terminals; A system power-on signal supplied from the system power supply control device only when there is no condensation on the element is provided with an OR circuit that is applied to each input terminal, and the output of this OR circuit is sent to the power supply unit as a power-on signal. An electronic device comprising: a unit power supply control section that outputs an output.