Background technology
At present, the more and more power consumption of terminal that cause of the function of terminal increase, and more and more miniaturization of terminal, and power consumption of terminal increases and miniaturization causes the thermal value of terminal to increase.(for example short circuit etc.) causes terminal that slight heating is arranged if terminal inner breaks down, and because the user can't identification should slight heating be normal heating or abnormal heating, continue to use, the small fault of terminal inner can develop into significant trouble and finally cause pernicious incident of generating heat.So whether the sense terminals heating belongs to abnormal heating is very important.
In the prior art, terminal abnormal heating detection method mainly is based on temperature detection.Be specially: one or more thermal sensors and an administrative unit are set in terminal, and each thermal sensor is connected with administrative unit.If the detected temperature of one or more thermal sensors exceeds pre-set threshold, then administrative unit determines to have occurred abnormal heating.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: because the stationkeeping of thermal sensor, distance between chip and the thermal sensor can influence the accuracy of the temperature that arrives of thermal sensor detection, and the detected temperature of thermal sensor is subjected to environmental impact easily, causes the detection error of terminal abnormal heating detection method of the prior art big.
For example, terminal has different mode of operations usually, under the different working modes, and the distribution difference of thermal source.Under first mode of operation, chip A heating, the detected temperature of first thermal sensor is T1.Under second mode of operation, chip B heating, the detected temperature of first thermal sensor is T2.Because chip B distance first thermal sensor is far away, so T2 is less than T1.Under the circumstances, when threshold value is set, have to threshold range is enlarged, so just reduced the accuracy that abnormal heating detects, improved the error that abnormal heating detects.
And for example, if athermic chip under certain normal condition is because fault has produced slight heating, and because this chip is far away apart from thermal sensor, the detected temperature of thermal sensor is within normal range like this, and administrative unit just can't detect current terminal and produce abnormal heating.
For another example, suppose that the temperature threshold that sets in advance is 95 degrees centigrade, when surpassing 95 degrees centigrade, administrative unit determines to have produced abnormal heating.Terminal is in being in 25 degrees centigrade environment the time, and the temperature of thermal sensor position is 100 degrees centigrade, and as seen slight abnormal heating has appearred in this terminal.When terminal being moved in 0 degree centigrade the environment, because environment temperature has descended 25 degrees centigrade, so the temperature of thermal sensor position also descends about 25 degrees centigrade, at this moment the temperature of thermal sensor position becomes 75 degrees centigrade, be lower than 95 degrees centigrade of the temperature thresholds that set in advance, administrative unit determines that this terminal does not have abnormal heating like this, and in fact this terminal has produced abnormal heating, only the rising of terminal temperature has been offset in the reduction of environment temperature, causes the erroneous judgement of administrative unit disconnected.Same reason for the terminal that does not produce abnormal heating, if when moving to this terminal in the environment that temperature raise, because environment temperature raises, causes the detected temperature of thermal sensor to raise, thereby causes the erroneous judgement of administrative unit disconnected.
As seen, this terminal abnormal heating detection method based on temperature detection, it is big to detect error.
Summary of the invention
The embodiment of the invention provides a kind of terminal abnormal heating detection method, device and terminal, in order to solve the big problem of terminal abnormal heating detection method error in the prior art, reduces the detection error of terminal abnormal heating detection method.
The embodiment of the invention provides a kind of terminal abnormal heating detection method, comprising:
Be retrieved as the current value of output current of the supply module of terminal power supply;
Whether the current value of judging described output current is greater than current threshold; If the current value of described output current, is determined described terminal greater than current threshold and is produced abnormal heating; If the current value of described output current is less than or equal to current threshold, determine that described terminal does not produce abnormal heating.
The embodiment of the invention also provides a kind of terminal abnormal heating pick-up unit, comprising:
Detection module is used to be retrieved as the current value of output current of the supply module of terminal power supply;
Administration module is used to judge that whether the current value of the detected described output current of described detection module is greater than current threshold; If the current value of the detected output current of described detection module, is determined described terminal greater than current threshold and is produced abnormal heating; If the current value of the detected output current of described detection module is less than or equal to current threshold, determine that described terminal does not produce abnormal heating.
The present invention also provides a kind of terminal, comprises foregoing terminal abnormal heating pick-up unit.
Terminal abnormal heating detection method, device and terminal that the embodiment of the invention provides, at first be retrieved as the current value of output current of the supply module of terminal power supply, whether judge this current value then greater than current threshold, determine by judged result whether terminal has produced abnormal heating.Because electric current is not affected by environment, thereby can reduce the error of terminal abnormal heating detection method.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
It is that internal short-circuit causes electric current excessive that terminal produces the former at all of abnormal heating, so can determine whether terminal produces abnormal heating by detecting electric current.Because electric current can be not affected by environment, so to determine whether terminal produces the detection error of method of abnormal heating little by detecting electric current, the accuracy height.
Be illustrated in figure 1 as terminal abnormal heating detection method embodiment one process flow diagram of the present invention, comprise:
Step 101, be retrieved as the current value of output current of the supply module of terminal power supply.
Step 102, judge that whether the current value of described output current is greater than current threshold; If the current value of output current, is determined terminal greater than current threshold and is produced abnormal heating; If the current value of output current is less than or equal to current threshold, determine that terminal does not produce abnormal heating.
The circuit design difference of each terminal, each terminal is also different for the requirement of thermal value.Can determine current threshold according to actual conditions.For example, data are obtained the corresponding relation between size of current and the thermal value by experiment, thereby determine current threshold.Perhaps also can calculate the corresponding relation that obtains between size of current and the thermal value, thereby determine current threshold by the corresponding relation of electric current and heating.
Among the terminal abnormal of the present invention heating detection method embodiment one, at first be retrieved as the current value of output current of the supply module of terminal power supply, whether judge this current value then, determine by judged result whether terminal has produced abnormal heating greater than current threshold.Because electric current is not affected by environment, thereby can reduce the detection error of terminal abnormal heating detection method.
Step 101 specifically can be a voltage difference of obtaining the first resistance two ends; First resistance string is associated in the basic routing line of supply module; Obtain current value according to the voltage difference at the first resistance two ends, be the current value of the output current of supply module by the first resistor current value by first resistance.Step 101 specifically can also be the current value of output current that is retrieved as the supply module of terminal power supply by the Hall element in the basic routing line that is connected on supply module.
Be illustrated in figure 2 as first resistance that relates in the various embodiments of the present invention and the connection diagram of supply module.First resistance 1 is connected in the basic routing line of supply module 2, obtain after the voltage difference at first resistance, 1 two ends, can calculate current value according to formula I=U/R by first resistance 1, I is the current value by first resistance 1, U is the voltage difference at first resistance, 1 two ends, and R is the resistance of first resistance 1.Supply module is the terminal power supply, specifically be to be each module for power supply in the terminal, adopt mode in parallel or that be connected in series between each module, be used to the branched line of each module for power supply to pool a basic routing line, first resistance in the embodiment of the invention can be connected in the basic routing line.Among Fig. 2, first resistance string is associated in the basic routing line that is connected with the negative pole of supply module, and first resistance also can be connected in the basic routing line that is connected with the positive pole of supply module.
Be illustrated in figure 3 as first Hall element that relates in the various embodiments of the present invention and the connection diagram of supply module.First Hall element 4 is connected in the basic routing line of supply module 2.First Hall element 4 comprises four terminals, and wherein two terminals are connected with basic routing line, can measure electric current by first Hall element 4 by two other terminal, is the output current of supply module 2 by the electric current of first Hall element 4.
Step 102 specifically can be: terminal the unloading phase, whether the current value of judging output current greater than first current threshold; If the current value of output current, is determined terminal greater than first current threshold and is produced abnormal heating; If the current value of output current is less than or equal to first current threshold, determine that terminal does not produce abnormal heating; In the standby stage of terminal, whether the current value of judging output current is greater than second current threshold; If the current value of output current, is determined terminal greater than second current threshold and is produced abnormal heating; If the current value of output current is less than or equal to second current threshold, determine that terminal does not produce abnormal heating.In various embodiments of the present invention, the unloading phase be meant terminal from power on to the time period of finishing network registry, after the standby stage was meant that terminal powers on, terminal was not finished network registry, prepared the stage with network service.
Supply module terminal the unloading phase to the current value of terminal input difference is arranged usually to the current value of terminal input with in the standby stage of terminal, each stage of terminal is provided with different current thresholds respectively, can further reduce the error of terminal abnormal heating detection method, improve the accuracy that the terminal abnormal heating detects.
In order further to improve the accuracy that the terminal abnormal heating detects, more a plurality of current thresholds can be set, a plurality of current thresholds are the different phase of counterpart terminal respectively, in each stage, if the current value of supply module output current, determines then that terminal has produced abnormal heating greater than the current threshold in this stage.
In the prior art, detect after the abnormal heating of terminal, terminal is handled automatically, and can not be notified to the user.Like this, in case heating occurs, the user can't know that normal heating still is an abnormal heating.The user may think the normal heating of terminal by mistake abnormal heating, thereby bring unnecessary anxiety to the user, the user also might think the abnormal heating of terminal by mistake the normal heating of terminal, thereby causes terminal to work under the abnormal heating situation, produces more serious consequence.
In order to overcome the problems referred to above of the prior art, in the embodiment of the invention, after determining that terminal produces abnormal heating, can be by alert program to User Alarms, for example, can be at display alarm interface on the display screen of terminal or on the screen of the computer that is connected with terminal, can display alarm literal or animation on the warning interface, for example, can show on the warning interface that being used to notify the user current is abnormal heating or the literal or the animation of normal heating, the user can determine whether according to the content on the warning interface to continue to use terminal like this.If normal heating, then the user can continue to use terminal, if abnormal heating, then the user can temporarily stop using terminal.Perhaps, can report to the police, for example report to the police by the tinkle of bells of terminal or the pilot lamp that is arranged on the terminal by sound or pilot lamp.
Be illustrated in figure 4 as the structural representation of terminal abnormal heating pick-up unit embodiment one of the present invention, this terminal abnormal heating pick-up unit 3 comprises detection module 11 and administration module 12.Detection module 11 is used to be retrieved as the current value of output current of the supply module of terminal power supply; Administration module 12 is connected with detection module, is used to judge that whether the current value of detection module 11 detected output currents is greater than current threshold; If the current value of detection module 11 detected output currents, is determined terminal greater than current threshold and is produced abnormal heating; If the current value of detection module 11 detected output currents is less than or equal to current threshold, determine that terminal does not produce abnormal heating.
Be illustrated in figure 5 as the structural representation of terminal abnormal heating pick-up unit embodiment two of the present invention, this terminal abnormal heating pick-up unit 3 also comprises first resistance 1 in the basic routing line that is connected on the supply module 2 of powering into terminal.Detection module 11 comprises operational amplifier 111, analog to digital converter 112 and central processing unit 113, and analog to digital converter 112 is connected with central processing unit 113 with operational amplifier 111 respectively, and central processing unit 113 is connected with administration module 12.Operational amplifier 111 is connected with the two ends of first resistance 1, is used for the voltage difference at first resistance, 1 two ends is amplified; Analog to digital converter 112 is used for the analog signal conversion of operational amplifier 111 outputs is become digital signal; Central processing unit 113 is used for calculated signals according to analog to digital converter 112 input and goes out current value by first resistance 1, is the current value of supply module output current by the current value of first resistance 1.
Administration module 12 specifically can be used for terminal the unloading phase, whether the current value of judging detection module 11 detected output currents greater than first current threshold; If the current value of detection module 11 detected output currents, is determined terminal greater than first current threshold and is produced abnormal heating; If the current value of detection module 11 detected output currents is less than or equal to described first current threshold, determine that terminal does not produce abnormal heating; And be used for standby stage in terminal, whether the current value of judging detection module 11 detected output currents is greater than second current threshold; If the current value of the detected output current of detection module, is determined terminal greater than second current threshold and is produced abnormal heating; If the current value of detection module 11 detected output currents is less than or equal to second current threshold, determine that terminal does not produce abnormal heating.On the basis of above each embodiment, can also comprise alarm module, alarm module is connected with administration module, is used for reporting to the police by alert program when administration module determines that terminal produces abnormal heating, perhaps reports to the police by sound or pilot lamp.Like this, the user just can know that the heating of current terminal is abnormal heating or normal heating, thereby can take appropriate measures, for example, if normal heating, then the user can continue to use terminal, if abnormal heating, then the user can temporarily stop using terminal.
Terminal abnormal heating pick-up unit as shown in Figure 4 can also comprise first Hall element in the basic routing line that is connected on the supply module of powering into terminal, and detection module specifically can be used to detect the current value by first Hall element.Current value by first Hall element promptly is the current value for the output current of supply module.
In the various embodiments of the present invention, first resistance can be precision resistance, and first Hall element can be accurate Hall element.
The embodiment of the invention also provides a kind of terminal, comprises the terminal abnormal heating pick-up unit that relates among each embodiment of front, and this terminal abnormal heating pick-up unit is connected with the supply module of terminal.
The terminal abnormal heating detection method, device and the terminal that provide in the embodiment of the invention, at first be retrieved as the current value of output current of the supply module of terminal power supply, whether judge this current value then greater than current threshold, determine by judged result whether terminal has produced abnormal heating.Because electric current is not affected by environment, thereby can reduce the error of terminal abnormal heating detection method.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.