CN103561171B - The conservation treatment method and system that a kind of mobile phone is overboard - Google Patents
The conservation treatment method and system that a kind of mobile phone is overboard Download PDFInfo
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- CN103561171B CN103561171B CN201310532532.5A CN201310532532A CN103561171B CN 103561171 B CN103561171 B CN 103561171B CN 201310532532 A CN201310532532 A CN 201310532532A CN 103561171 B CN103561171 B CN 103561171B
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Abstract
The invention discloses the conservation treatment method and system that a kind of mobile phone is overboard, described method comprises A, on mobile phone, arranges acceleration transducer for detection of handset acceleration in advance; B, when mobile phone falls, read acceleration transducer gather accekeration, and detect judge whether mobile phone falls in water; C, when detecting that described mobile phone falls in water, then controls to cut off battery of mobile phone and powers.The present invention adopts the detection of Gravity accelerometer to judge; after the action of detection of handset meets the condition falling water; start-up circuit is protected; cut off the supply of battery; thus prevent the short circuit of mobile phone from damaging, after mobile phone anhydrates drying, mobile phone normal usage function can be recovered; and control to open corresponding power protection, effectively can protect mobile phone.
Description
Technical field
The present invention relates to consumer electronics field, the conservation treatment method and system that in particular a kind of mobile phone is overboard.
Background technology
Current personal electronic consumed product, particularly the development of mobile phone is very fast, substantially everyone be can reach and one the even mobile phone of multi-section had, the function having merged the high-performance smart mobile phone of various advanced electronics technology is also from strength to strength, price is also high, and the price of a novel flagship type machine has even exceeded the price of a computer.But a such mobile phone is once accidentally fall in water, and because the battery of mobile phone is still to mobile phone circuit system power supply, such mobile phone circuit is just easily short-circuited damage.
All clearly will not guarantee to keep in good repair mobile phone water inlet in the guarantee clause of current producer and businessman, like this once mobile phone is fallen in water, client oneself can only bear whole losses, causes unnecessary loss to consumer.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, for the above-mentioned defect of prior art, provides the conservation treatment method and system that a kind of mobile phone is overboard; The detection of Gravity accelerometer is adopted to judge; after the action of detection of handset meets the condition falling water; start-up circuit is protected; cut off the supply of battery; thus prevent the short circuit of mobile phone from damaging, after mobile phone anhydrates drying, mobile phone normal usage function can be recovered; and control to open corresponding power protection, effectively can protect mobile phone.
The technical scheme that technical solution problem of the present invention adopts is as follows:
The conservation treatment method that mobile phone is overboard, wherein, comprises step:
A, arrange on mobile phone and be used for the acceleration transducer of detection of handset acceleration in advance;
B, when mobile phone falls, read acceleration transducer gather accekeration, and detect judge whether mobile phone falls in water;
C, when detecting that described mobile phone falls in water, then controls to cut off battery of mobile phone and powers.
The conservation treatment method that described mobile phone is overboard, wherein, described step B also comprises:
B11, fall in water process when mobile phone, being the first accekeration by reading the accekeration of acceleration transducer collection, judging whether mobile phone is freely falling body by this first accekeration;
B12, when judging that mobile phone is as freely falling body, then controlling to continue to gather the accekeration of acceleration transducer, is the second accekeration, and carries out process judgement mobile phone to this second accekeration and whether contact the water surface;
B13, when the judgement mobile phone contact water surface, then control to continue to gather the accekeration of acceleration transducer, be the 3rd accekeration, judge whether mobile phone falls in water by the 3rd accekeration.
The conservation treatment method that described mobile phone is overboard, wherein, described step C also comprises:
When the described mobile phone contact water surface being detected and falling in water, then judge that described mobile phone falls in water, then control to cut off battery of mobile phone and power.
The conservation treatment method that described mobile phone is overboard, wherein, described step B also comprises:
Whether fallen in water by the water sensor detection of handset being arranged on mobile phone surface.
The conservation treatment method that described mobile phone is overboard, wherein, described step B specifically also comprises:
B1, when mobile phone falls, control open acceleration transducer gather accekeration;
B2, read described accekeration, when described accekeration is more than the first predetermined value, controls to open water sensor detection of handset and whether fall in water;
B3, when described water sensor detect to value more than the second predetermined value time, then judge mobile phone be fall in water.
The conservation treatment system that mobile phone is overboard, wherein, comprising:
Set handling module, for arranging the acceleration transducer being used for detection of handset acceleration in advance on mobile phone, and arranges corresponding acceleration threshold values;
Detect and judge module, for when mobile phone falls, read the accekeration that acceleration transducer gathers, and detection judges whether mobile phone falls in water;
Control treatment module, for when detecting that described mobile phone falls in water, then controls to cut off battery of mobile phone and powers.
The conservation treatment system that described mobile phone is overboard, wherein, described detection and judge module comprise:
First detects and judging unit, for falling in water process when mobile phone, being the first accekeration, judging whether mobile phone is freely falling body by this first accekeration by reading the accekeration of acceleration transducer collection;
Second detects and judging unit, and for when judging that mobile phone is as freely falling body, then controlling the accekeration continuing to gather acceleration transducer, is the second accekeration, and carries out process judgement mobile phone to this second accekeration and whether contact the water surface;
3rd detects and judging unit, for when judging the mobile phone contact water surface, then controls the accekeration continuing to gather acceleration transducer, is the 3rd accekeration, judges whether mobile phone falls in water by the 3rd accekeration.
The conservation treatment system that described mobile phone is overboard, wherein, described control treatment module comprises:
First control unit, for when the described mobile phone contact water surface being detected and falling in water, then judges that described mobile phone falls in water, then control to cut off battery of mobile phone and power.
The conservation treatment system that described mobile phone is overboard, wherein, described detection and judge module also comprise:
Detection & Controling unit, for when mobile phone falls, controls to open acceleration transducer and gathers accekeration; Read described accekeration, when described accekeration is more than the first predetermined value, controls to open water sensor detection of handset and whether fall in water; When described water sensor detect to value more than the second predetermined value time, then judge mobile phone be fall in water.
The conservation treatment method and system that a kind of mobile phone provided by the present invention is overboard, read by the parameter of the transducer to the acceleration of gravity that mobile phone configures, judge whether its parameter meets the process from free-electron model of slipping out of the hand, and the judgement of the acceleration numerical value in the stage such as to enter under water heavy, once be judged as falling into water, then send order to power protection system; And control to cut off main current supply circuit, effectively can protect mobile phone.Once start-up circuit protection, need to press reset button and adopt activating power system external again and power, reach effective control of power supply, and well can protect mobile phone.
Accompanying drawing explanation
Fig. 1 is the flow chart of the preferred embodiment of the overboard conservation treatment method of mobile phone of the present invention.
Fig. 2 is the flow chart of the preferred application embodiment of the overboard conservation treatment method of mobile phone of the present invention.
Fig. 3 is the functional schematic block diagram of the preferred embodiment of the overboard conservation treatment system of mobile phone of the present invention.
Embodiment
The conservation treatment method and system that a kind of mobile phone provided by the present invention is overboard, for making object of the present invention, technical scheme and advantage clearly, clearly, developing simultaneously referring to accompanying drawing, the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, Fig. 1 is the flow chart of the preferred embodiment that the invention provides a kind of overboard conservation treatment method of mobile phone.As shown in Figure 1, the conservation treatment method that described mobile phone is overboard, comprises the following steps:
Step S100, arrange on mobile phone and be used for the acceleration transducer of detection of handset acceleration in advance;
In the inventive method embodiment, need not install for the mobile phone being provided with acceleration transducer, then installation one acceleration transducer do not had, such as Gravity accelerometer, for the gravity acceleration value of detection of handset again.
Step S200, when mobile phone falls, read acceleration transducer gather accekeration, and detect judge whether mobile phone falls in water.
In the present embodiment, judging whether mobile phone falls in water in detection can realize by the following method:
Wherein, the first detection judges that the method whether mobile phone falls in water specifically comprises:
B11, fall in water process when mobile phone, start the detection (as shown in Figure 2 S10) carrying out falling into water process, do you by reading the accekeration of acceleration transducer collection for the first accekeration (S11 namely shown in Fig. 2 gathers acceleration transducer data), judge (whether the step S12 numerical value namely shown in Fig. 2 meets freely to fall mobile phone for freely falling body by this first accekeration?);
Wherein, not by any resistance, the only object of landing under gravity, is named " freely falling body ".As the object fallen by inactive state under terrestrial gravitation effect.Overhead near earth surface can regard constant gravitational field as.If do not considered atmospheric drag, the movement of falling object in this region is uniformly accelrated rectilinear motion.Its acceleration is constantly equal to acceleration of gravity, and the value that namely gravity accelerates is 9.8m/s
2.Although the gravitation of the earth and object square to be inversely proportional to earth center distance, but the radius of the earth much larger than freely falling body the distance of process, so gravitation can regard constant as at Near Ground, the movement of falling object to be initial velocity be zero uniformly accelrated rectilinear motion.So judge whether mobile phone is freely falling body by this first accekeration, be and judge whether its first accekeration approximates 9.8m/s
2, but in right reality, be subject to the resistance of air, have deviation, concrete deviation belongs to prior art, therefore does not repeat them here.
B12, when judging that mobile phone is as freely falling body, then control the accekeration (the step S13 namely shown in Fig. 2 continues to gather acceleration transducer data) continuing to gather acceleration transducer, be the second accekeration, and to this second accekeration carry out process judge mobile phone whether contact the water surface; Whether the S14 numerical value namely shown in Fig. 2 meets the contact water surface is impacted, and when being, continues to gather acceleration transducer data when entering S15.
Wherein, process is carried out to this second accekeration and judges whether mobile phone contacts the water surface, whether the second accekeration meets water surface impact value can be determined by test, mobile phone drop the material touching different densities time to impact to mobile phone the acceleration caused be different, obtained by the method reading the value of acceleration transducer.Because acceleration is different when various motion, and the value that gravity accelerates is 9.8N/S
2and vertically downward, so, can by reading the value of acceleration sensor, after removing gravity acceleration component again, by judging in the change having acceleration in terrestrial gravitation vertical downward direction, by being arranged on the different acceleration threshold values of vertical downward direction, object can be analyzed and contact the water surface at dropping shock, and all have its obvious codomain feature in conjunction with the speed that this object after fuselage weight and volume sinks in water, combine with these course of action and judge, just can detect that mobile phone falls into this process of water.
B13, when the judgement mobile phone contact water surface, then control to continue to gather the accekeration of acceleration transducer, be the 3rd accekeration, judge whether mobile phone falls in water by the 3rd accekeration.Does step S16 as shown in Figure 2, judge whether to meet in water?
The present invention in the specific implementation, judges by carrying out collection to the parameter of the acceleration transducer collection on smart mobile phone pcb board, detects and whether meet freely falling body and enter under water heavy process.Because acceleration is different when various motion, and the value that gravity accelerates is 9.8m/s
2, so, can by reading the value of gravity sensor, corresponding conditional parameter is set again and is limited detection, the motion conditions of the reality of transported object can be judged, to the analysis of accekeration, object can be analyzed and contact the water surface at dropping shock, and all have its obvious codomain feature in conjunction with the speed that this object after fuselage weight and volume sinks in water, by arranging the range of parameter values of the acceleration in these stages, the judgement value range of the acceleration namely during freely falling body, value range is judged with the acceleration contacting the water surface and sink in water, combine with these course of action and judge, just can detect that mobile phone falls into this process of water.Ripe and the precision of Technical comparing due to present acceleration transducer also very high (more than 10bit), is fallen in water, the contact water surface, ground or other objects and fall in water to sink and mode can be worth to obtain by reading acceleration transducer.
Does specifically which type of accekeration meet and judges the mobile phone contact water surface? during due to rigidity materials such as kiss the earths, acceleration now can vanishing immediately, even can there is elastic collision and produce contrary accekeration, and the material touching the liquid such as water occurs is flexible impact, still have a downward less accekeration (namely and the value of gravity acceleration much smaller than 9.8m/s
2), so by the acceleration at the end of judging freely falling body whether as zero or can judge to there occurs rigid collision or flexible impact as negative value, can judge whether touch the water surface.
And the 3rd accekeration is how much be that under meeting mobile phone, water has suffered? this value is the acceleration figure 9.8m/s being less than freely falling body in atmosphere
2and be greater than an accekeration of zero, concrete value is relevant with the volume and weight of machine, namely relevant with the buoyancy produced in water, simple method can method by experiment to be surveyed, namely mobile phone drops in water under carrying out waterproof condition, designs the value of handset program real time record acceleration and obtains.Example fall by mobile phone freely falling body time gravity accelerate value (the first accekeration) be 9.8m/s
2, then mobile phone falls and touches its accekeration of the water surface and also change, and touching the value (i.e. the second accekeration) that the water surface its gravity that time accelerates is much smaller than 9.8m/s
2, then mobile phone falls in water, its accekeration is another become one substantially at the uniform velocity value (i.e. the 3rd accekeration) be slightly less than 9.8m/s
2.Thus judge that mobile phone drops into the contact water surface, then to this process that falls into the water.
Can certainly be detected by other method and judge whether mobile phone falls in water, whether such as, water sensor detection of handset by being arranged on mobile phone surface falls in water.
Wherein, the second detects and judges the mobile phone method whether fallen in water is whether water sensor detection of handset by being arranged on mobile phone surface falls in water, specifically comprises the following steps:
B1, when mobile phone falls, control open acceleration transducer gather accekeration.
B2, read described accekeration, when described accekeration is more than the first predetermined value, controls to open water sensor detection of handset and whether fall in water; Namely 9.8m/s is about when described accekeration meets freely falling body i.e. the first predetermined value
2time, control to open water sensor detection of handset and whether fall in water.
B3, when described water sensor detect to value more than the second predetermined value time, then judge mobile phone be fall in water.
Wherein, and water sensor is divided into contact Water immersion detector and non-contact type water soaked detector.Wherein contact Water immersion detector, utilizes liquid conduction principle to detect.Time normal, the two poles of the earth probe is by air insulation; Pop one's head under Riddled Condition conducting, transducer exports dry contact signal.When soaking highly about 1 millimeter when popping one's head in, namely produce alarm signal.This product adopts extension to reset meter, is convenient to dispose.
And contactless Water immersion detector, utilize the refraction of light in different medium cross section and principle of reflection to detect.Be placed with LED and photelectric receiver in plastics hemisphere, when detector is placed in air, because of total reflection, most LED light is received by photelectric receiver; When near hemisphere surface, due to the refraction of light, LED light that photelectric receiver receives will reduce, thus output also changes.Be suitable for being deployed in general corrosion conducting liquid and reveal place.
Adopt contact Water immersion detector to carry out detection of handset in the present invention whether to fall into the water.When described water sensor detect to value more than the second predetermined value time, then judge mobile phone be fall in water.
Step S300, when detecting that described mobile phone falls in water, then controls to cut off battery of mobile phone and powers.
In the present embodiment, be not occur at once to intake after mobile phone water inlet, the infiltration of water needs the time in a few second, but owing to usually often can not take mobile phone away from water after mobile phone enters water at once, just easily result in and occur into water short circuit.So when detecting that described mobile phone falls in water in the present invention, then control to cut off battery of mobile phone and power, the mode being cut off power supply by automatic detection and control can meet the protection of opponent's tester in power-down state.Concrete for when detect that described mobile phone starts into water, then can to control to cut off battery of mobile phone at once and power, i.e. step S17 as shown in Figure 2, send instruction powered-down.
Further, when the described mobile phone contact water surface being detected and falling in water, then judge that described mobile phone falls in water, then control to cut off battery of mobile phone and power.
Wherein control machine battery of cutting off the hands to power and automatically can be controlled by software simulating.Mobile phone is except the positive pole (+) of battery, outside the output pin of (-) pole, also have the ID pin of battery and the detection pin of battery temperature, need in the present embodiment to send order to battery system from cell phone system, simple design can adopt the communication modes of I2C, again battery increases contact feet, and SCL and SDA; Also can adopt the communication modes of solid wire serial full duplex, battery only increase a pin and just can realize controlling cut-out battery of mobile phone and power.
The battery core of common battery system is substantially all the management of charging and discharging that the mode of hardware realizes battery, due to the ability that application claims battery has ability to communicate and exports according to communication instruction powered-down system external, so inside battery can be adopted to need to increase microcontroller, be responsible for the communication of process and mobile phone side, communication pin is two battery pin of above-mentioned increase, cutting function generally adopts metal-oxide-semiconductor to do control switch circuit, and MCU receives charge control switch pipe after communication command.Thus control supplying power for outside.
Meanwhile, in order to improve reliability, a manual reset button can be set on battery.When specific embodiment, when the battery of mobile phone controlling to cut off is powered, after mobile phone closes out oven dry from water, the operation of this reset button can also be arranged through and control again to recover to supply.This reset button inside can adopt the spring sheet type key that mobile phone uses, and outside has water proof rubber to protect.Be integrated with battery case.Once the output of power supply is closed, only have reset button to press and just can recover supplying power for outside, safe and reliable like this.
But, need in the specific implementation to need to accomplish complete waterproof sealing, after being immersed in the water to battery system, the circuit of inside battery and battery and core member can not be intake, battery is water-tight substantially, need do Seal Design to the plastic casing of battery aspect, and by waterproof gluing and gap.
In the present invention, by detecting freely falling body and falling into after in water, prevent the short circuit of cell phone system from damaging by closing powered battery, so, all can design among battery detecting and perform the MCU judged, make battery possess separately the ability detecting and perform powered-down, it is more firm to arrange like this.
Therefore, the invention provides a kind of conservation treatment method that mobile phone is overboard; Judge by adopting the detection of Gravity accelerometer; after the action of detection of handset meets the condition falling water; start-up circuit is protected; cut off the supply of battery; thus prevent the short circuit of mobile phone from damaging, after mobile phone anhydrates drying, mobile phone normal usage function can be recovered; and control to open corresponding power protection, effectively can protect mobile phone.
Based on above-described embodiment, present invention also offers the embodiment of the overboard conservation treatment system of a kind of mobile phone, as shown in Figure 3, described system comprises:
Set handling module 310, for arranging the acceleration transducer being used for detection of handset acceleration in advance on mobile phone, and arranges corresponding acceleration threshold values; As detailed above.
Detect and judge module 320, for when mobile phone falls, read the accekeration that acceleration transducer gathers, and detection judges whether mobile phone falls in water; As detailed above.
Control treatment module 330, for when detecting that described mobile phone falls in water, then controls to cut off battery of mobile phone and powers; As detailed above.
Wherein, described detection and judge module 320 comprise:
First detects and judging unit, for falling in water process when mobile phone, being the first accekeration, judging whether mobile phone is freely falling body by this first accekeration by reading the accekeration of acceleration transducer collection; As detailed above.
Second detects and judging unit, and for when judging that mobile phone is as freely falling body, then controlling the accekeration continuing to gather acceleration transducer, is the second accekeration, and carries out process judgement mobile phone to this second accekeration and whether contact the water surface; As detailed above.
3rd detects and judging unit, for when judging the mobile phone contact water surface, then controls the accekeration continuing to gather acceleration transducer, is the 3rd accekeration, judges whether mobile phone falls in water by the 3rd accekeration; As detailed above.
Embodiment further, the conservation treatment system that described mobile phone is overboard, described detection and judge module also comprise:
Detection & Controling unit, for when mobile phone falls, controls to open acceleration transducer and gathers accekeration; Read described accekeration, when described accekeration is more than the first predetermined value, controls to open water sensor detection of handset and whether fall in water; When described water sensor detect to value more than the second predetermined value time, then judge mobile phone be fall in water; As detailed above.
Wherein, described control treatment module comprises:
First control unit, for when the described mobile phone contact water surface being detected and falling in water, then judges that described mobile phone falls in water, then control to cut off battery of mobile phone and power.
In sum, the conservation treatment method and system that a kind of mobile phone provided by the present invention is overboard, read by the parameter of the transducer to the acceleration of gravity that mobile phone configures, judge whether its parameter meets the process from free-electron model of slipping out of the hand, and the judgement of the acceleration numerical value in the stage such as to enter under water heavy, once be judged as falling into water, then send order to power protection system; And control to cut off main current supply circuit, effectively can protect mobile phone.Once start-up circuit protection, need to press reset button and adopt activating power system external again and power, reach effective control of power supply, and well can protect mobile phone
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (2)
1. the conservation treatment method that mobile phone is overboard, is characterized in that, comprise step:
A, arrange on mobile phone and be used for the acceleration transducer of detection of handset acceleration in advance;
B, when mobile phone falls, read the accekeration that acceleration transducer gathers, and detect and judge whether mobile phone falls in water or by the water sensor detection of handset being arranged on mobile phone surface and whether fall in water;
C, when detecting that described mobile phone falls in water, then controls to cut off battery of mobile phone and powers;
By reading the accekeration that acceleration transducer gathers in described step B, and detect and judge whether mobile phone falls in water and specifically comprise:
B11, fall in water process when mobile phone, being the first accekeration by reading the accekeration of acceleration transducer collection, judging whether mobile phone is freely falling body by this first accekeration;
B12, when judging that mobile phone is as freely falling body, then controlling to continue to gather the accekeration of acceleration transducer, is the second accekeration, and carries out process judgement mobile phone to this second accekeration and whether contact the water surface;
B13, when the judgement mobile phone contact water surface, then control to continue to gather the accekeration of acceleration transducer, be the 3rd accekeration, judge whether mobile phone falls in water by the 3rd accekeration;
Described acceleration transducer is the Gravity accelerometer of the gravity acceleration value for detection of handset;
Also comprise after described step C:
After mobile phone takes out oven dry from water, control again to restore electricity by reset button operation;
Described step C also comprises:
When the described mobile phone contact water surface being detected and falling in water, then judge that described mobile phone falls in water, then control to cut off battery of mobile phone and power;
Whether the water sensor detection of handset by being arranged on mobile phone surface in described step B falls in water and specifically comprises:
B1, when mobile phone falls, control open acceleration transducer gather accekeration;
B2, read described accekeration, when described accekeration is more than the first predetermined value, controls to open water sensor detection of handset and whether fall in water;
B3, when the value that described water sensor detects is more than the second predetermined value, then judge mobile phone be fall in water;
Water sensor divides employing contact Water immersion detector, and contact Water immersion detector adopts extension to reset meter, and time normal, the two poles of the earth probe is by air insulation; To pop one's head under Riddled Condition conducting, transducer output contact signal, when pop one's head in immersion height 1 millimeter time, produce alarm signal.
2. the conservation treatment system that mobile phone is overboard, is characterized in that, comprising:
Set handling module, for arranging the acceleration transducer being used for detection of handset acceleration in advance on mobile phone, and arranges corresponding acceleration threshold values;
Detect and judge module, for when mobile phone falls, read the accekeration that acceleration transducer gathers, and detection judges whether mobile phone falls in water or by the water sensor detection of handset being arranged on mobile phone surface and whether falls in water;
Control treatment module, for when detecting that described mobile phone falls in water, then controls to cut off battery of mobile phone and powers;
Described detection and judge module are used for by reading the accekeration that acceleration transducer gathers, and detection judges whether mobile phone falls in water specifically comprises:
First detects and judging unit, for falling in water process when mobile phone, being the first accekeration, judging whether mobile phone is freely falling body by this first accekeration by reading the accekeration of acceleration transducer collection;
Second detects and judging unit, and for when judging that mobile phone is as freely falling body, then controlling the accekeration continuing to gather acceleration transducer, is the second accekeration, and carries out process judgement mobile phone to this second accekeration and whether contact the water surface;
3rd detects and judging unit, for when judging the mobile phone contact water surface, then controls the accekeration continuing to gather acceleration transducer, is the 3rd accekeration, judges whether mobile phone falls in water by the 3rd accekeration;
Described acceleration transducer is the Gravity accelerometer of the gravity acceleration value for detection of handset;
Described system also comprises:
Reseting module, after taking out oven dry, controls again to restore electricity by reset button operation for mobile phone from water;
Described control treatment module comprises:
First control unit, for when the described mobile phone contact water surface being detected and falling in water, then judges that described mobile phone falls in water, then control to cut off battery of mobile phone and power;
Whether described detection and judge module are used for being fallen in water by the water sensor detection of handset being arranged on mobile phone surface specifically comprising:
Detection & Controling unit, for when mobile phone falls, controls to open acceleration transducer and gathers accekeration; Read described accekeration, when described accekeration is more than the first predetermined value, controls to open water sensor detection of handset and whether fall in water; When the value that described water sensor detects is more than the second predetermined value, then judge that mobile phone falls in water;
Water sensor divides employing contact Water immersion detector, and contact Water immersion detector adopts extension to reset meter, and time normal, the two poles of the earth probe is by air insulation; To pop one's head under Riddled Condition conducting, transducer output contact signal, when pop one's head in immersion height 1 millimeter time, produce alarm signal.
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