CN105373461A - Terminal device and heat dissipation detection method therefor - Google Patents

Terminal device and heat dissipation detection method therefor Download PDF

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Publication number
CN105373461A
CN105373461A CN201410416846.3A CN201410416846A CN105373461A CN 105373461 A CN105373461 A CN 105373461A CN 201410416846 A CN201410416846 A CN 201410416846A CN 105373461 A CN105373461 A CN 105373461A
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China
Prior art keywords
temperature
cpu
terminal
current
limit
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Pending
Application number
CN201410416846.3A
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Chinese (zh)
Inventor
黄浩伦
陈俊
张业当
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Ambit Microsystems Shanghai Ltd
Original Assignee
Ambit Microsystems Shanghai Ltd
Hon Hai Precision Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201410416846.3A priority Critical patent/CN105373461A/en
Publication of CN105373461A publication Critical patent/CN105373461A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a heat dissipation detection method for a terminal device. The method comprises the steps of setting a first upper limit value of environment temperature and a second upper limit value of surface temperature of a CPU; controlling the CPU to reach a heat balance state when running under a full-load condition; detecting current environment temperature and current surface temperature of the CPU; when the current environment temperature exceeds the first upper limit value, sending out a note of caution; when the current environment temperature does not exceed the first upper limit value, comparing the current surface temperature of the CPU with the second upper limit value; and when the current surface temperature of the CPU exceeds the second upper limit value, judging that a heat dissipation function of the terminal device is out of operation, and sending out the caution. The invention furthermore provides the terminal device. According to the heat dissipation detection method, whether the heat dissipation function is normal or not can be judged by detecting the environment temperature of the terminal device and the surface temperature of the CPU, and the caution is automatically sent out when the heat dissipation is out of operation.

Description

Terminal device and heat radiation detection method thereof
Technical field
The present invention relates to a kind of temperature detection technology, especially relate to a kind of terminal device and heat radiation detection method thereof.
Background technology
For terminal devices such as Set Top Box (STB), cable modems (CM), heat radiator (HeatSink) fixes on CPU surface by the silica gel solid of reference column and bottom.To make terminal device normally work, CPU surface temperature must be less than maximum operating temperature Tj-θ jA*P.Wherein Tj is the joint temperature of CPU, and P is the power consumption of CPU when full load, and θ jA is the coefficient of heat transfer of silica gel material, can become larger and larger with the aging of silica gel.In bad working environment, these terminal devices may, because of reasons such as heat radiator silica gel are aging, cause CPU to dispel the heat fast not.If can not the heat sinking function of this terminal device of Timeliness coverage go wrong, equipment will be caused to run slowly or heat work as machine, have a strong impact on user's use.
Summary of the invention
In view of above content, be necessary to provide a kind of terminal device, can be judged by the environment temperature and CPU surface temperature detecting this terminal device that whether heat sinking function is normal, and automatically send warning when failure.
In view of above content, there is a need to the heat radiation detection method that a kind of terminal device is provided, can be judged by the environment temperature and CPU surface temperature detecting this terminal device that whether heat sinking function is normal, and automatically send warning when failure.
Described terminal device comprises: arrange module, for the second higher limit of the surface temperature of the first higher limit and described CPU that arrange the environment temperature of described terminal device; Control module, runs reach thermal equilibrium state for controlling described CPU under full-load conditions; Detection module, for detecting the Current surface temperature of current environmental temperature and described CPU; Comparison module, for more described current environmental temperature and described first higher limit; Alarm module, for when described current environmental temperature exceedes described first higher limit, sends warning; Described comparison module also for when described current environmental temperature does not exceed described first higher limit, the Current surface temperature of more described CPU and described second higher limit; And described alarm module is also for when the Current surface temperature of described CPU exceedes described second higher limit, judges that the heat sinking function of described terminal device lost efficacy, and send warning.
Described heat radiation detection method comprises step: the second higher limit arranging the first higher limit of the environment temperature of described terminal device and the surface temperature of described CPU; Control described CPU to run under full-load conditions and reach thermal equilibrium state; Detect the Current surface temperature of current environmental temperature and described CPU; More described current environmental temperature and described first higher limit; When described current environmental temperature exceedes described first higher limit, send warning; When described current environmental temperature does not exceed described first higher limit, the Current surface temperature of more described CPU and described second higher limit; And when the Current surface temperature of described CPU exceedes described second higher limit, judge that the heat sinking function of described terminal device lost efficacy, and send warning.
Compared to prior art, described terminal device and heat radiation detection method thereof, the change-over switch that a pin of the CPU of this terminal device can be utilized to connect and two temperature sensors, periodic detection environment temperature and CPU surface temperature, to monitor the heat sinking function of this terminal device.And when the temperature detected exceedes preset value, can automatically notify user or operator, to carry out changing or keeping in repair.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of terminal device preferred embodiment of the present invention.
Fig. 2 is the process flow diagram of the heat radiation detection method preferred embodiment of terminal device of the present invention.
Main element symbol description
Terminal device 2
Heat radiation detection system 10
CPU 20
Pin 22
Storer 30
Signal lamp 40
Change-over switch 50
First temperature sensor 60
Second temperature sensor 70
Module is set 100
Timing module 200
Control module 300
Detection module 400
Read module 500
Comparison module 600
Alarm module 700
Following embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Embodiment
Consulting shown in Fig. 1, is the functional block diagram of terminal device 20 of the present invention preferred embodiment.Described terminal device 2 comprises heat radiation detection system 10, CPU20, storer 30 and signal lamp (as LED) 40.In the present embodiment, at a GPIO(GeneralPurposeInputOutput of CPU20, universal input/output) pin (pin) 22 is electrically connected change-over switch 50, this change-over switch 50 is electrically connected at the first temperature sensor 60 and the second temperature sensor 70 respectively.First temperature sensor 60 is for testing environment temperature, and the second temperature sensor 70 is for detecting the surface temperature of CPU20.Described terminal device 2 can be Set Top Box, cable modem, ADSL(Asymmetrical Digital Subscriber Line) terminal etc.
Described heat radiation detection system 10 comprises and arranges module 100, timing module 200, control module 300, detection module 400, read module 500, comparison module 600 and alarm module 700.Described module is configured to be performed by one or more processor (the present embodiment is CPU20), to complete the present invention.Module alleged by the present invention has been the computer program code segments of a specific function.Storer 30 is for the data such as program code of detection system 10 of dispelling the heat.
Described second higher limit of module 100 for the surface temperature of the first higher limit and CPU20 that arrange the environment temperature of terminal device 2 is set.When environment temperature lower than this first higher limit and the surface temperature of CPU20 lower than this second higher limit time, this terminal device 2 can normally work.In the present embodiment, this first higher limit is 40 degrees Celsius, and this second higher limit is that the normal operating temperature of CPU20 adds permission ascending temperature, and wherein the normal operating temperature of CPU20 is that current environmental temperature adds 41 degrees Celsius, and this permission ascending temperature is 2.5 degrees Celsius.The impact of environment temperature on the surface temperature of CPU20 has been considered in the setting of this second higher limit, according to this second higher limit, can judge that whether the heat sinking function of this terminal device 2 is normal more exactly.Arrange module 100 the first higher limit arranged and the second higher limit are preserved in memory 30.
The described module 100 that arranges also carries out to terminal device 2 sense cycle detected of dispelling the heat for arranging.In the present embodiment, every predetermined time (sense cycle), terminal device 2 is once dispelled the heat detection.Arrange module 100 sense cycle arranged is preserved in memory 30.
Described timing module 200 carries out to this terminal device 2 time detected of dispelling the heat for recording distance is last, to judge whether to arrive the sense cycle arranged.
Described control module 300 is for when arriving the sense cycle arranged, and control CPU20 runs and reaches thermal equilibrium state under full-load conditions.
Described detection module 400, for after CPU20 reaches thermal equilibrium state, by controlling change-over switch 50, makes the first temperature sensor 60 and the second temperature sensor 70 detect the Current surface temperature of current environmental temperature and CPU20 respectively.In the present embodiment, change-over switch 50 connects two circuits, and first line is connected to the first temperature sensor 60, second connection in the second temperature sensor 70.When detection module 400 control change-over switch 50 connect first line time, the first temperature sensor 60 starts to detect current environmental temperature; When detection module 400 control change-over switch 50 connect the second circuit time, the second temperature sensor 70 starts the Current surface temperature detecting CPU20.
The current environmental temperature that described read module 500 detects for reading this first temperature sensor 60.
Described read module 500 is also for reading the Current surface temperature of the CPU20 that this second temperature sensor 70 detects.In the present embodiment, read module 500 repeatedly can read multiple detected values of this second temperature sensor 70 within a predetermined period of time, then calculates the median of the plurality of detected value, using the Current surface temperature as CPU20.Such as, multiple detected values that read module 500 reads are respectively 57,58,60,62,63,64,67 and 69(unit: degree Celsius), then median is (62+63)/2=62.5, and therefore the Current surface temperature of CPU20 is 62.5 degrees Celsius.
Described comparison module 600 is for comparing this current environmental temperature and the first set higher limit.
Described alarm module 700, for when this current environmental temperature exceedes the first higher limit set by (being greater than), sends warning.Such as, if the first set higher limit is 40 degrees Celsius, current environmental temperature is 42 degrees Celsius, then alarm module 700 sends warning.In the present embodiment, the mode sending warning can be that the signal lamp 40 controlled on this terminal device 2 starts to glimmer, sends announcement information to the user of this terminal device 2 or send service information etc. to the operator of this terminal device 2, can also be that several in aforesaid way combines.
Described comparison module 600, also for when this current environmental temperature does not exceed the first higher limit set by (being less than or equal to), compares the Current surface temperature of this CPU20 and the second set higher limit.
Described alarm module 700, also for when the Current surface temperature of this CPU20 exceedes the second set higher limit, judges that the heat sinking function of this terminal device 2 lost efficacy, and sends warning.Such as, if current environmental temperature is 25 degrees Celsius, the Current surface temperature of CPU20 is 89 degrees Celsius, then the second higher limit is (25+41)+2.5=68.5 degree Celsius, the Current surface temperature of CPU20 exceedes this second higher limit, and alarm module 700 sends warning.In the present embodiment, the mode now sending warning also can be a kind of or several combination in aforesaid way, and the mode now sending warning can be identical more than the mode sending warning during the first higher limit with current environmental temperature, also can be different.After receiving warning, user or operator can learn that the heat sinking function of this terminal device 2 goes wrong in time, to carry out changing or keeping in repair.
Consulting shown in Fig. 2, is the process flow diagram of the heat radiation detection method preferred embodiment of terminal device of the present invention.Described heat radiation detection method performs the module 100 ~ 700 shown in Fig. 1 by described CPU20 and realizes.
Step S10, arranges the second higher limit that module 100 arranges the first higher limit of the environment temperature of terminal device 2 and the surface temperature of CPU20.In the present embodiment, this first higher limit is 40 degrees Celsius, and this second higher limit is that the normal operating temperature of CPU20 adds permission ascending temperature, and wherein the normal operating temperature of CPU20 is that current environmental temperature adds 41 degrees Celsius, and this permission ascending temperature is 2.5 degrees Celsius.Arrange module 100 the first higher limit arranged and the second higher limit are preserved in memory 30.
Step S12, arranges module 100 and arranges the sense cycle of terminal device 2 being carried out to heat radiation detection.In the present embodiment, every predetermined time (sense cycle), terminal device 2 is once dispelled the heat detection.Arrange module 100 sense cycle arranged is preserved in memory 30.
Step S14, timing module 200 recording distance is last carries out to this terminal device 2 time detected of dispelling the heat, and judges whether to arrive the sense cycle arranged.If arrive the sense cycle arranged, then perform step S16.If do not arrive the sense cycle of setting, then continue to repeat step S14.
Step S16, control module 300 control CPU20 run and reach thermal equilibrium state under full-load conditions.
Step S18, after CPU20 reaches thermal equilibrium state, detection module 400, by controlling change-over switch 50, makes the first temperature sensor 60 and the second temperature sensor 70 detect the Current surface temperature of current environmental temperature and CPU20 respectively.In the present embodiment, change-over switch 50 connects two circuits, and first line is connected to the first temperature sensor 60, second connection in the second temperature sensor 70.When detection module 400 control change-over switch 50 connect first line time, the first temperature sensor 60 starts to detect current environmental temperature; When detection module 400 control change-over switch 50 connect the second circuit time, the second temperature sensor 70 starts the Current surface temperature detecting CPU20.
Step S20, read module 500 reads the current environmental temperature that this first temperature sensor 60 detects.
Step S22, read module 500 reads the Current surface temperature of the CPU20 that this second temperature sensor 70 detects.In the present embodiment, read module 500 repeatedly can read multiple detected values of this second temperature sensor 70 within a predetermined period of time, then calculates the median of the plurality of detected value, using the Current surface temperature as CPU20.
Step S24, comparison module 600 compares this current environmental temperature and the first set higher limit.If this current environmental temperature exceedes the first set higher limit, then perform step S26.If this current environmental temperature does not exceed the first set higher limit, then perform step S28.
Step S26, alarm module 700 sends warning.In the present embodiment, the mode sending warning can be that the signal lamp 40 controlled on this terminal device 2 starts to glimmer, sends announcement information to the user of this terminal device 2 or send service information etc. to the operator of this terminal device 2, can also be that several in aforesaid way combines.
Step S28, comparison module 600 compares the Current surface temperature of this CPU20 and the second set higher limit.If the Current surface temperature of this CPU20 exceedes the second set higher limit, then perform step S30.If the Current surface temperature of this CPU20 does not exceed the second set higher limit, then flow process terminates.
Step S30, alarm module 700 judges that the heat sinking function of this terminal device 2 lost efficacy, and sends warning.In the present embodiment, the mode now sending warning also can be a kind of or several combination in aforesaid way, and the mode now sending warning can be identical more than the mode sending warning during the first higher limit with current environmental temperature, also can be different.
Above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not depart from the spirit and scope of technical solution of the present invention.

Claims (10)

1. a heat radiation detection method, for the heat sinking function of sense terminals equipment, described terminal device comprises CPU, it is characterized in that, the method comprises:
Second higher limit of the first higher limit of the environment temperature of described terminal device and the surface temperature of described CPU is set;
Control described CPU to run under full-load conditions and reach thermal equilibrium state;
Detect the Current surface temperature of current environmental temperature and described CPU;
More described current environmental temperature and described first higher limit;
When described current environmental temperature exceedes described first higher limit, send warning;
When described current environmental temperature does not exceed described first higher limit, the Current surface temperature of more described CPU and described second higher limit; And
When the Current surface temperature of described CPU exceedes described second higher limit, judge that the heat sinking function of described terminal device lost efficacy, and send warning.
2. the heat radiation detection method of terminal device as claimed in claim 1, it is characterized in that, the step that the method arranges the second higher limit of the surface temperature of the first higher limit of the environment temperature of described terminal device and the CPU of described terminal device described and the described CPU of described control run under full-load conditions reach thermal equilibrium state step between also comprise step:
Arrange and the sense cycle detected of dispelling the heat is carried out to described terminal device;
Recording distance is last carries out to described terminal device the time detected of dispelling the heat, to judge whether to arrive the sense cycle arranged; And
When arriving the sense cycle arranged, performing the described CPU of described control under full-load conditions, running the step reaching thermal equilibrium state.
3. the heat radiation detection method of terminal device as claimed in claim 1, it is characterized in that, the step of the Current surface temperature of described detection current environmental temperature and described CPU also comprises:
The change-over switch and the first temperature sensor be electrically connected with described change-over switch respectively and the second temperature sensor that are electrically connected with a pin of described CPU are set;
Control the Current surface temperature that described first temperature sensor and described second sensor detect described current environmental temperature and described CPU respectively;
Read the described current environmental temperature that described first temperature sensor detects; And
Read the Current surface temperature of the described CPU that described second temperature sensor detects.
4. the heat radiation detection method of terminal device as claimed in claim 3, it is characterized in that, the step of the Current surface temperature of the described CPU that described second temperature sensor of described reading detects also comprises:
Repeatedly read multiple detected values of described second temperature sensor within a predetermined period of time; And
Calculate the median of described multiple detected value, using described median as the Current surface temperature of described CPU.
5. the heat radiation detection method of terminal device as claimed in claim 1, it is characterized in that, described second higher limit is that the normal operating temperature of described CPU adds permission ascending temperature, the normal operating temperature of wherein said CPU is that described current environmental temperature adds 41 degrees Celsius, and described permission ascending temperature is 2.5 degrees Celsius.
6. a terminal device, described terminal device comprises CPU, it is characterized in that, described terminal device comprises:
Module is set, for the second higher limit of the surface temperature of the first higher limit and described CPU that arrange the environment temperature of described terminal device;
Control module, runs reach thermal equilibrium state for controlling described CPU under full-load conditions;
Detection module, for detecting the Current surface temperature of current environmental temperature and described CPU;
Comparison module, for more described current environmental temperature and described first higher limit;
Alarm module, for when described current environmental temperature exceedes described first higher limit, sends warning;
Described comparison module also for when described current environmental temperature does not exceed described first higher limit, the Current surface temperature of more described CPU and described second higher limit; And
Described alarm module, also for when the Current surface temperature of described CPU exceedes described second higher limit, judges that the heat sinking function of described terminal device lost efficacy, and sends warning.
7. terminal device as claimed in claim 6, is characterized in that:
The described module that arranges also carries out to described terminal device the sense cycle detected of dispelling the heat for arranging; And
Described terminal device also comprises timing module, carries out the time detected of dispelling the heat for recording distance is last to described terminal device, to judge whether to arrive the sense cycle arranged.
8. terminal device as claimed in claim 6, it is characterized in that: a pin of described CPU is electrically connected change-over switch, described change-over switch is electrically connected at the first temperature sensor and the second temperature sensor respectively, when described detection module controls described first temperature sensor of described change-over switch connection, described first temperature sensor starts to detect described current environmental temperature; When described detection module controls described second temperature sensor of described change-over switch connection, described second temperature sensor starts the Current surface temperature detecting described CPU; And
Described terminal device also comprises read module, for reading the current environmental temperature that described first temperature sensor detects, and the Current surface temperature of described CPU that described second temperature sensor detects.
9. terminal device as claimed in claim 8, it is characterized in that, described read module repeatedly reads multiple detected values of described second temperature sensor within a predetermined period of time, calculates the median of described multiple detected value, using described median as the Current surface temperature of described CPU.
10. terminal device as claimed in claim 6, it is characterized in that, described second higher limit is that the normal operating temperature of described CPU adds permission ascending temperature, and the normal operating temperature of wherein said CPU is that described current environmental temperature adds 41 degrees Celsius, and described permission ascending temperature is 2.5 degrees Celsius.
CN201410416846.3A 2014-08-22 2014-08-22 Terminal device and heat dissipation detection method therefor Pending CN105373461A (en)

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CN106776209A (en) * 2016-12-05 2017-05-31 合肥联宝信息技术有限公司 The temperature monitoring method and system of a kind of smart machine

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