JP2008242673A - Heat source decision device, information processor, heat source decision method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a maintenance operation when temperature abnormal rising occurs. <P>SOLUTION: A heat source decision device 320 supplies electric power to a main processing part 330. The temperature measuring part of the heat source decision device 320 acquires the temperature of the main processing part 330 measured by a temperature sensor 310. The power supply control part of the heat source decision device 320 stops power supply to the main processing part 330 when the temperature acquired by the temperature measurement part is decided to be an abnormal high temperature. The heat source decision part of the heat source decision part 320 decides whether or not the factor of the abnormal high temperature lies in a main processing part 330 based on the change over time of the temperature acquired by the temperature measurement part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heat source determination device, an information processing device, a heat source determination method, and a program, and more particularly to a heat source determination device, an information processing device, a heat source determination method, and a program for measuring a temperature in the information processing device.

The conventional temperature abnormality rise monitoring mechanism includes a temperature sensor attached to the housing of the information processing apparatus, the temperature sensor detecting means that the measured temperature has reached a set temperature, and the set temperature. Means for detecting that the temperature has become lower. The temperature abnormality rise monitoring mechanism warns the temperature abnormality rise if it does not detect that the temperature sensor has reached the set temperature within a certain period of time after detecting that the temperature sensor has reached the set temperature. While displaying, it is reporting to the central processing unit (see, for example, Patent Document 1).
JP-A-5-241673

  However, the conventional abnormal temperature rise monitoring mechanism can detect the abnormal temperature rise, but does not know the cause of the abnormal rise. For this reason, since maintenance personnel go to the site to investigate the cause of the abnormal rise and perform maintenance according to the cause found by the investigation, there is a problem that maintenance work becomes complicated and takes time. .

  The present invention has been made in view of such circumstances, and an object thereof is a heat source determination device, an information processing device, a heat source determination method, and a program capable of facilitating maintenance work when an abnormal temperature rise occurs. Is to provide.

  The present invention has been made to solve the above-described problems, and a heat source determination device according to the present invention is a heat source determination device that supplies power to an information processing device, and is a temperature at which the temperature in the information processing device is measured. When it is determined that the temperature measured by the measurement unit and the temperature measurement unit is abnormally high, the power supply control unit that stops power supply to the information processing device, and the temperature measured by the temperature measurement unit And a heat source determining unit that determines whether or not the cause of the abnormally high temperature is in the information processing apparatus based on a change over time.

  Further, the heat source determination device of the present invention is the above-described heat source determination device, wherein the heat source determination unit is a cause of abnormally high temperature based on a temporal change in temperature after the power supply control unit stops power supply. Is determined in the information processing apparatus.

  The heat source determination device of the present invention is the above-described heat source determination device, and includes a storage unit that stores the temperature and the temperature decrease in association with each other, and the power supply control unit supplies power to the heat source determination unit. The temperature decrease ΔTref corresponding to the temperature Tref closest to the temperature T when the power supply is stopped is read from the storage unit, and the temperature decrease ΔTref when a predetermined time has elapsed after the power supply is stopped and the temperature decrease ΔTref In comparison, it is determined whether or not the cause of the abnormally high temperature is in the information processing apparatus.

  The heat source determination device of the present invention is the above-described heat source determination device, and determines that the cause of the abnormally high temperature is the information processing device when the temperature decrease ΔTref is smaller than the temperature decrease ΔT. It is characterized by.

  Moreover, the heat source determination device of the present invention is the above-described heat source determination device, and when the value ΔTd obtained by subtracting the temperature decrease ΔTref from the temperature decrease ΔT is larger than a predetermined threshold value α1, the cause of the abnormally high temperature Is determined to be the information processing apparatus, and when the value ΔTd is smaller than the threshold value α1 and the threshold value α1, and is between the predetermined threshold value α2, the cause of the abnormally high temperature cannot be specified. When the value ΔTd is smaller than the threshold value α2, it is determined that the cause of the abnormally high temperature is not the information processing apparatus.

  In addition, the heat source determination device of the present invention is the above-described heat source determination device, wherein the power supply control unit restarts the power supply when the predetermined condition is satisfied after stopping the power supply, The heat source determination unit is configured to determine whether or not the information processing apparatus has a cause of an abnormally high temperature based on a temporal change in temperature after the power supply control unit resumes power supply.

  The heat source determination device according to the present invention is any one of the above-described heat source determination devices, and includes a determination result transmission unit that transmits a determination result of the heat source determination unit to an external device.

  In addition, the information processing apparatus of the present invention, when it is determined that the temperature measured by the temperature measuring unit and the temperature measured by the temperature measuring unit are abnormally high, go to the main processing unit of the own device. A power supply control unit that stops the power supply of the heat source, and a heat source determination unit that determines whether or not the cause of the abnormally high temperature is in the device based on a change over time of the temperature measured by the temperature measurement unit. Features.

  An information processing apparatus according to the present invention is the information processing apparatus described above, and further includes a determination result transmission unit that transmits a determination result of the heat source determination unit to an external device.

  The information processing apparatus according to the present invention is the information processing apparatus described above, wherein the main processing unit includes the determination result transmission unit, and the heat source determination unit stops power supply by the power supply control unit. And determining whether or not the cause of the abnormally high temperature is in the information processing apparatus based on the change over time in the temperature, and the power supply control unit satisfies a predetermined condition after stopping the power supply. When the power supply control unit starts supplying power, the determination result transmission unit transmits the determination result of the heat source determination unit to an external device. It is characterized by.

  The heat source determination method of the present invention is a heat source determination method in a heat source determination device that includes a temperature measurement unit that measures the temperature in the information processing device and supplies electric power to the information processing device. However, when the first process of measuring the temperature in the information processing device and the heat source determination device determines that the temperature measured by the temperature measurement unit is an abnormally high temperature, to the information processing device A second step of stopping the power supply, and a third step of determining whether or not the information processing device is the cause of the abnormally high temperature based on a change with time of the temperature measured by the temperature measurement unit. The process is provided.

  Further, the program of the present invention includes a temperature measuring unit that measures the temperature of the information processing device, and the computer of the heat source determination device that supplies power to the information processing device has an abnormal temperature measured by the temperature measuring unit. When it is determined that the temperature is high, a power supply control unit that stops power supply to the information processing device, and the information processing device is caused by an abnormally high temperature based on a change in temperature measured by the temperature measurement unit. It is made to function as a heat source determination part which determines whether or not.

  Further, the program of the present invention, when determining that the temperature measured by the temperature measuring unit and the temperature measured by the temperature measuring unit are abnormally high, supplies power to the main processing unit of the own device. An information processing apparatus comprising: a power supply control unit that stops; and a heat source determination unit that determines whether or not the cause of the abnormally high temperature is in the main processing unit based on a change over time of the temperature measured by the temperature measurement unit The computer of the main processing unit is caused to function as a determination result transmission unit that transmits the determination result of the heat source determination unit to an external device.

  According to this invention, since the heat source determination unit determines whether the cause of the abnormally high temperature is in the information processing device based on the change over time of the temperature, whether the cause of the abnormally high temperature is in the information processing device or otherwise Therefore, the content of the maintenance work can be determined according to this factor, and the maintenance work can be facilitated.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic block diagram showing the configuration of an observation system according to an embodiment of the present invention. The observation system in this embodiment is a vehicle observation system that observes the amount of vehicle traveled at each point in order to predict traffic jams, a weather observation system that observes weather conditions at each point for weather forecasting, landslides and landslides. An observation system such as a ground observation system that observes ground distortion at each point for prediction, and includes a center server 100, a network 200, and an observation device 300. The center server 100 receives the observation result from each observation device 300 and controls this observation system. The observation device 300 is an information processing device that is installed at each observation point and transmits observation contents to the center server 100. The network 200 connects the center server 100 and each observation device 300 so that they can communicate with each other.

  FIG. 2 is a schematic block diagram illustrating the configuration of the observation apparatus 300. The observation device 300 includes a temperature sensor 310, a heat source determination device 320, and a main processing unit 330. The temperature sensor 310 measures the temperature inside the housing of the observation apparatus 300, particularly the temperature of the main processing unit 330. The heat source determination device 320 is a device that consumes less power than the main processing unit 330, that is, has a sufficiently small amount of heat generation, so as not to affect the measurement content of the temperature sensor 310. The heat source determination device 320 includes a computer, acquires a measurement result from the temperature sensor 310, determines a heat source when the temperature is abnormally high, and controls power supplied to the main processing unit 330. The main processing unit 330 is an information processing device for operating as the observation device 300 of the observation system, performs measurement with various sensors (not shown), and transmits the measurement result to the center server 100. The main processing unit 330 includes a determination result transmission unit 331 and a communication unit 332. The determination result transmission unit 331 transmits the determination result of the heat source by the heat source determination device 320 to the center server 100 via the communication unit 332. This determination result is transmitted when restarting power supply, which will be described later. The communication unit 332 communicates with the center server 100 via the network 200.

  FIG. 3 is a schematic block diagram illustrating a configuration of the heat source determination device 320. The heat source determination device 320 includes a temperature measurement unit 321, a power supply control unit 322, a storage unit 323, and a heat source determination unit 324. The temperature measurement unit 321 acquires the temperature inside the housing of the observation apparatus 300 measured by the temperature sensor 310, particularly the temperature of the main processing unit 330. The power supply control unit 322 determines that the temperature measured by the temperature measurement unit 321 exceeds the preset threshold value Tth and is abnormally high, and stops the power supply to the main processing unit 330. The power supply control unit 322 restarts the power supply to the main processing unit 330 when a predetermined time such as 10 minutes elapses after the power supply is stopped. The condition for restarting the power supply may be not the elapsed time but the time when the measurement result by the temperature measurement unit 321 becomes lower than a preset temperature.

  When the main processing unit 330 is stopped in a normal state for the heat source determination, the storage unit 323 determines the temperature Tref at the time of stoppage and the temperature decrease when a certain time, for example, 10 minutes elapses from the stop. ΔTref is associated and stored as time characteristic reference data. That is, the storage unit 323 stores in advance a change with time in temperature since the power supply when the main processing unit 330 is normal is stopped for reference when performing heat source determination. The heat source determination unit 324 determines whether or not the cause of the abnormally high temperature is in the main processing unit 330 based on the change over time of the temperature measured by the temperature measurement unit 321. Specifically, this determination is performed by reading the temperature Tref closest to the temperature T when the power supply is stopped and the temperature decrease ΔTref corresponding to the temperature Tref from the storage unit 323 and stopping the power supply for a certain period of time. When the temperature decrease ΔTref is smaller than the temperature decrease ΔT by comparing the temperature decrease ΔT with the elapsed temperature decrease ΔTref, it is determined that the cause of the abnormally high temperature is in the main processing unit 330, Is determined to be other than the main processing unit 330.

In this determination, when the main processing unit 330 is the cause of the abnormally high temperature, the heat generated by the main processing unit 330 is greater than that in the normal state, so that the temperature difference between the main processing unit 330 and the outside is larger than in the normal state. This is based on the fact that the temperature decrease when the power supply is stopped and the main processing unit 330 stops generating heat becomes larger than normal.
FIG. 4 is a diagram illustrating a specific example of time characteristic reference data stored in the storage unit 323. As shown in FIG. 4, the storage unit 323 uses a combination of the temperature Tref when the power supply is stopped and the temperature decrease ΔTref after a certain time has elapsed since the power supply is stopped, for example, the temperature Tref “40 ° C.” and the temperature decrease ΔTref. “9 ° C.”, similarly “45 ° C.” and “12 ° C.”, “50 ° C.” and “15 ° C.”, “55 ° C.” and “19 ° C.” are stored.

  FIG. 5 is a flowchart for explaining the operation of the observation apparatus 300 in the present embodiment. The temperature measuring unit 321 acquires the temperature measured by the temperature sensor 310 (S1). The power supply control unit 322 determines whether or not the temperature acquired by the temperature measurement unit 321 exceeds the abnormal high temperature threshold Tth (S2). If it is determined in step S2 that it has not exceeded, the process returns to step S1 and the process is repeated. When it is determined in step 2 that the power has been exceeded, the power supply control unit 322 shuts off the power supply for the main processing unit 330 and stops the power supply to the main processing unit 330 (S3). The temperature measuring unit 321 initializes the time stamp immediately after the power supply is stopped (sets to t = 0), acquires the temperature T0 measured by the temperature sensor 310 at that time, and the time stamp (t = 0). The measured temperature T0 is stored in the temporary work memory of the heat source determination device 320 (not shown) (S4).

  When a predetermined time tm, for example, 10 minutes elapses, the temperature measurement unit 321 acquires the temperature Tm measured by the temperature sensor 310 at that time (S5), and the time stamp at this time (t = tm). ) And the measured temperature Tm are stored in a temporary work memory (not shown) (S6). The heat source determination unit 324 obtains the temperature T0 at the time stamp t = 0 and the temperature Tm at the time stamp t = tm from the temporary work memory, and calculates T0−Tm = ΔT that is the difference between them. Furthermore, the heat source determination unit 324 acquires the temperature decrease ΔTref stored in association with the temperature Tref closest to the temperature T0 from the storage unit 323. Here, temperature T0 = 52 ° C., temperature Tm = 25 ° C., ie, temperature decrease ΔT = 27 ° C., temperature Tref = 50 ° C. closest to temperature T0, and corresponding temperature decrease ΔTref = 15 ° C. To do.

  The heat source determination unit 324 has the temperature decrease ΔTref = 15 ° C. acquired from the storage unit 323 while the temperature decrease ΔT = 27 ° C. of the measured temperature, and thus ΔT> ΔTref, that is, the temperature decrease ΔTref Therefore, it is determined that the cause of the abnormally high temperature is in the main processing unit 330 (S7). The power supply control unit 322 resumes power supply to the main processing unit 330 when a certain period of time (when it is the same as tm, there is no extra waiting time) has elapsed since the power supply was stopped. When the power supply to the main processing unit 330 is resumed, the determination result transmission unit 331 of the main processing unit 330 acquires the determination result from the heat source determination unit 324, and the acquired determination result is sent to the center via the communication unit 332. It transmits to the server 100 (S8).

As described above, when the main processing unit 330 is caused by an abnormally high temperature, the temperature difference between the main processing unit 330 and the outside is larger than that in the normal state. By utilizing the increase, the normal temperature decrease stored in the storage unit 323 in advance and the temperature decrease measured by the temperature sensor 310 are compared. If the measured temperature decrease is larger, the temperature is abnormally high. It can be determined that the cause is the main processing unit 330. As a result, when an abnormally high temperature occurs in any of the observation devices 300, it is possible to determine whether the cause is in the main processing unit 330 or other factors, so the content of the maintenance work can be determined. Maintenance work can be facilitated.
In addition, since the determination result of the cause of abnormally high temperature is transmitted to the center server 100, the cause can be grasped by the center server 100, so that the maintenance work is decided without going to the place where the observation apparatus 300 is installed. Even when the observation devices 300 are distributed over a wide area, maintenance work can be facilitated.

  In the present embodiment, the heat source determination unit 324 has been described as being included in the heat source determination device 320, but when the main processing unit 330 is included and power supply to the main processing unit 330 is resumed, The measurement result by the temperature measurement unit 321 may be acquired from the memory of the heat source determination device 320 to perform heat source determination, and the determination result transmission unit 331 may transmit the determination result. Thereby, the process of the heat source determination apparatus 320 can be minimized and power consumption can be suppressed.

In the present embodiment, the determination result transmission unit 331 and the communication unit 332 are described as being included in the main processing unit 330, but the heat source determination device 320 may be included. In this case, the power consumption of the heat source determination device 320 is larger than that in the present embodiment, but it is not necessary to restart the power supply to the main processing unit 330 in order to transmit the result of the heat source determination.
In the present embodiment, the heat source determination unit 324 determines the cause of the abnormally high temperature based on the change over time in the temperature after the power supply of the main processing unit 330 is stopped. The cause of the abnormally high temperature may be determined based on the change over time. At this time, the heat source determination unit determines that the main processing unit 330 is the cause of the abnormally high temperature if the temperature increase after restarting the power supply is greater than the temperature increase stored in the storage unit.

  In this embodiment, the heat source determination unit 324 determines the heat source based on the magnitude relationship between the temperature decrease ΔT and the temperature decrease ΔTref, but a value ΔTd obtained by subtracting the temperature decrease ΔTref from the temperature decrease ΔT When larger than the determined threshold value α1, it is determined that the cause of the abnormally high temperature is the main processing unit 330, and when the value ΔTd is between the threshold value α1 and the predetermined threshold value α2 (α2 <α1), When it is determined that the cause of the abnormally high temperature cannot be specified and the value ΔTd is smaller than the threshold value α2, it may be determined that the cause of the abnormally high temperature is not the main processing unit 330. Furthermore, at this time, when the cause of the abnormally high temperature cannot be specified, the power supply control unit 322 may stop the power supply again, perform the processing from step S3 to step S7 again, and perform the heat source determination. Note that the threshold value α2 may be −α1.

  Note that the temperature measurement unit 321, the power supply control unit 322, and the heat source determination unit 324 in FIG. 3 may be realized by dedicated hardware, and each of these units includes a memory and a CPU (central processing unit). The function may be realized by loading a program for realizing the function of each unit into a memory and executing the program.

  In addition, the program for realizing the function of the determination result transmission unit 331 in FIG. 2 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into the computer system and executed. The result may be transmitted. Here, the “computer system” includes an OS and hardware such as peripheral devices.

Further, the “computer system” includes a homepage providing environment (or display environment) if a WWW system is used.
The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. Furthermore, the “computer-readable recording medium” dynamically holds a program for a short time like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. In this case, a volatile memory in a computer system serving as a server or a client in that case, and a program that holds a program for a certain period of time are also included. The program may be a program for realizing a part of the functions described above, and may be a program capable of realizing the functions described above in combination with a program already recorded in a computer system.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes design and the like within a scope not departing from the gist of the present invention.

  The present invention is suitable for use in a system in which observation devices such as a vehicle observation system, a weather observation system, and a ground observation system are distributed over a wide area, but is not limited thereto.

It is a schematic block diagram which shows the structure of the observation system by one Embodiment of this invention. It is a schematic block diagram which shows the structure of the observation apparatus 300 in the embodiment. It is a schematic block diagram which shows the structure of the heat source determination apparatus 320 in the embodiment. It is a figure which shows the specific example of the time characteristic reference data which the memory | storage part 323 in the same embodiment memorize | stores. It is a flowchart explaining operation | movement of the observation apparatus 300 in the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Center server 200 ... Network 300 ... Observation apparatus 310 ... Temperature sensor 320 ... Heat source determination apparatus 321 ... Temperature measurement part 322 ... Electric power supply control part 323 ... Memory | storage part 324 ... Heat source determination part 330 ... Main processing part 331 ... Determination result transmission Unit 332 ... Communication unit

Claims (13)

A heat source determination device that supplies power to an information processing device,
A temperature measuring unit for measuring the temperature in the information processing apparatus;
When it is determined that the temperature measured by the temperature measurement unit is an abnormally high temperature, a power supply control unit that stops power supply to the information processing device;
A heat source determination device, comprising: a heat source determination unit that determines whether or not the information processing device is causing an abnormally high temperature based on a change in temperature measured by the temperature measurement unit.   The heat source determination unit determines whether or not the information processing apparatus has a cause of an abnormally high temperature based on a temporal change in temperature after the power supply control unit stops power supply. Item 2. The heat source determination device according to Item 1. A storage unit for storing the temperature and the temperature decrease in association with each other;
The heat source determination unit reads a temperature decrease ΔTref corresponding to a temperature Tref closest to the temperature T when the power supply control unit stops power supply from the storage unit, and a certain time has elapsed since the power supply was stopped. The heat source determination device according to claim 2, wherein the temperature decrease ΔT when the temperature is reduced and the temperature decrease ΔTref are compared to determine whether or not the cause of the abnormally high temperature is in the information processing device.   4. The heat source determination device according to claim 3, wherein when the temperature decrease ΔTref is smaller than the temperature decrease ΔT, it is determined that the cause of the abnormally high temperature is the information processing device.   When a value ΔTd obtained by subtracting the temperature decrease ΔTref from the temperature decrease ΔT is larger than a predetermined threshold value α1, it is determined that the cause of the abnormally high temperature is the information processing apparatus, and the value ΔTd is equal to the threshold value α1. When the value is smaller than the threshold value α1 and between the predetermined threshold value α2, it is determined that the cause of the abnormally high temperature cannot be specified. When the value ΔTd is smaller than the threshold value α2, the cause of the abnormally high temperature is determined. The heat source determination device according to claim 3, wherein it is determined that is not the information processing device. When the power supply control unit satisfies a predetermined condition after stopping the power supply, the power supply control unit restarts the power supply,
The heat source determination unit determines whether or not the information processing apparatus is responsible for an abnormally high temperature based on a temporal change in temperature after the power supply control unit resumes power supply. Item 2. The heat source determination device according to Item 1.   The heat source determination device according to any one of claims 1 to 6, further comprising a determination result transmission unit configured to transmit a determination result of the heat source determination unit to an external device. A temperature measurement unit for measuring the temperature in the device itself;
When it is determined that the temperature measured by the temperature measurement unit is an abnormally high temperature, a power supply control unit that stops power supply to the main processing unit of its own device,
An information processing apparatus comprising: a heat source determination unit that determines whether or not a cause of an abnormally high temperature is present in the device based on a change in temperature measured by the temperature measurement unit.   The information processing apparatus according to claim 8, further comprising a determination result transmission unit that transmits a determination result of the heat source determination unit to an external device. The main processing unit includes the determination result transmission unit,
The heat source determination unit determines whether or not the information processing apparatus has a cause of the abnormally high temperature based on a temporal change in temperature after the power supply control unit stops power supply.
When the power supply control unit satisfies a predetermined condition after stopping the power supply, the power supply control unit restarts the power supply to the main processing unit,
The information processing apparatus according to claim 9, wherein the determination result transmission unit transmits the determination result of the heat source determination unit to an external device when the power supply control unit starts power supply. A heat source determination method in a heat source determination device that includes a temperature measurement unit that measures the temperature in the information processing device and supplies power to the information processing device,
A first process in which the heat source determination device measures a temperature in the information processing device;
When the heat source determination device determines that the temperature measured by the temperature measurement unit is an abnormally high temperature, a second process of stopping power supply to the information processing device;
The heat source comprises: a third step of determining whether or not the information processing device is responsible for an abnormally high temperature based on a change over time in the temperature measured by the temperature measurement unit. Judgment method. A computer of a heat source determination device that includes a temperature measurement unit that measures the temperature of the information processing device and supplies power to the information processing device.
When it is determined that the temperature measured by the temperature measurement unit is an abnormally high temperature, a power supply control unit that stops power supply to the information processing device,
A program that functions as a heat source determination unit that determines whether or not a cause of an abnormally high temperature is in the information processing device based on a change in temperature measured by the temperature measurement unit. A temperature measurement unit that measures the temperature of the device itself, and a power supply control unit that stops power supply to the main processing unit of the device when it is determined that the temperature measured by the temperature measurement unit is an abnormally high temperature; A computer of the main processing unit of the information processing apparatus comprising: a heat source determination unit that determines whether or not the cause of the abnormally high temperature is in the main processing unit based on a change in temperature measured by the temperature measuring unit;
A program for functioning as a determination result transmission unit for transmitting a determination result of the heat source determination unit to an external device.

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