CN109961616A - Electronic device and fall alarming method for power - Google Patents
Electronic device and fall alarming method for power Download PDFInfo
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- CN109961616A CN109961616A CN201711408079.1A CN201711408079A CN109961616A CN 109961616 A CN109961616 A CN 109961616A CN 201711408079 A CN201711408079 A CN 201711408079A CN 109961616 A CN109961616 A CN 109961616A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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Abstract
The present invention proposes a kind of electronic device and falls alarming method for power.Electronic device includes signal processing circuit, acceleration transducer and edge sensor.Electronic device has device noumenon.Signal processing circuit is operated in suspend mode.The acceleration change of acceleration transducer sensing device ontology, to generate acceleration sensing signal.Acceleration transducer judges whether acceleration sensing signal is constantly less than acceleration rate threshold in predetermined time period, with wake-up signal processing circuit.When acceleration transducer wake-up signal processing circuit, signal processor starts edge sensor.The deformation of edge sensor sensing device ontology changes, to generate at least distortion sensing signal.Signal processing circuit analyzes distortion sensing signal, whether drop event occurs with judgment means ontology.
Description
Technical field
The present invention relates to a kind of warning technology, and in particular to a kind of with the electronic device for falling alarm function and fall
Fall alarming method for power.
Background technique
When from user's clothing, carry-on articles or vehicle drop event occurs for mobile device, user is usually needed
It can just find that mobile device is lost when secondary use under.In existing application, user can be by communication network under device
Up to locking, the instructions such as audio alarm, removing internal storage data are opened, and by the location technologies such as the built-in GPS of mobile device, inquiry
Device present position is with searching device.But loses from mobile device to user and find and carry out what far-end was set or recovered
In the process, one section of empty window phase is inevitably had.However, the probability that the data of mobile device leak is higher when empty time window phase is longer,
And the probability recovered also will be lower.Also, user also in face of the disconnected news of communication network or mobile device to lose electric power and can not
Do the risk of any disposition.In view of this, the present invention will be in the solution of several embodiments set forth below.
Summary of the invention
The present invention, which provides a kind of electronic device and has the function of automatically generating, falls alarm signal.
Electronic device of the invention has device noumenon, and electronic device includes signal processing circuit, acceleration sensing
Device and at least an edge sensor.Signal processing circuit is operated in suspend mode.Acceleration transducer couples signal processing electricity
Road.Acceleration change of the acceleration transducer to sensing device ontology, to generate acceleration sensing signal.Acceleration transducer
Judge whether acceleration sensing signal is constantly less than acceleration rate threshold in predetermined time period, electricity is handled with wake-up signal
Road.
One kind of the invention falls alarming method for power suitable for electronic device.Electronic device includes device noumenon, the method
The following steps are included: operation signal processing circuit is in suspend mode；By the acceleration of acceleration transducer sensing device ontology
Whether variation, to generate acceleration sensing signal, and judge acceleration sensing signal when default by acceleration transducer
Between be constantly less than acceleration rate threshold in length, with wake-up signal processing circuit；When acceleration transducer wake-up signal processing electricity
Lu Shi starts an at least edge sensor by signal processing circuit, and by an at least edge sensor sensing device sheet
The deformation of body changes, to generate an at least distortion sensing signal；And an at least distortion sensing is analyzed by signal processing circuit
Whether signal occurs drop event with judgment means ontology.
Based on above-mentioned, of the invention electronic device and fall alarming method for power can by acceleration transducer, edge sense
Device and signal processing circuit effectively judge whether the device noumenon of electronic device occurs drop event, with instant generation warning
Signal reminds user.
To make the foregoing features and advantages of the present invention clearer and more comprehensible, special embodiment below, and it is detailed to cooperate attached drawing to make
Carefully it is described as follows.
Detailed description of the invention
Fig. 1 is painted the block diagram of the electronic device of one embodiment of the invention；
Fig. 2 is painted the block diagram of the electronic device of another embodiment of the present invention；
Fig. 3 is painted the schematic diagram of the electronic device of one embodiment of the invention；
Fig. 4 is painted the schematic diagram of the acceleration sensing signal of one embodiment of the invention；
Fig. 5 is painted the schematic diagram of the distortion sensing signal of one embodiment of the invention；
Fig. 6 is painted the schematic diagram of the slope variation distribution of one embodiment of the invention；
Fig. 7 is painted the flow chart for falling alarming method for power of one embodiment of the invention；
Fig. 8 is painted the schematic diagram of the acceleration sensing signal of another embodiment of the present invention；
Fig. 9 is painted the schematic diagram of the distortion sensing signal of another embodiment of the present invention；
Figure 10 is painted the schematic diagram of the slope variation distribution of another embodiment of the present invention；
Figure 11 is painted the flow chart for falling alarming method for power of another embodiment of the present invention.
[symbol description]
100,200,300: electronic device；
110,210: signal processing circuit；
120,220: acceleration transducer；
130, C1_1, C1_2, C1_M, C2_1, C2_2, C2_M, CN_1, CN_2, CN_M, S1, S2, S3, S4, S5, S6: side
Edge sensor；
211: signal processor；
212: analog-to-digital converter；
213: multiplexer；
214: filter；
215: amplifier；
216: clock generator；
230_1,230_2,230_N: edge sensing module；
300B: device noumenon；
Ax:X axle acceleration value；
Ay:Y axle acceleration value；
Az:Z axle acceleration value；
LS: left side；
RS: right side；
S701、S702、S703、S704、S705、S706、S707、S708、S709、S710、S711、S1110、S1120、
S1130, S1140: step.
Specific embodiment
In order to be illustrated that the contents of the present invention more easily, spy can actually evidence as the present invention for embodiment below
With the example of implementation.In addition, all possible places, use element/component/step of identical label in the drawings and embodiments,
Represent same or like component.
Fig. 1 is painted the block diagram of the electronic device of one embodiment of the invention.With reference to Fig. 1, electronic device 100 includes at signal
Manage circuit 110, acceleration transducer 120 and edge sensor 130.Signal processing circuit 110 couples acceleration transducer 120
And edge sensor 130.In the present embodiment, signal processing circuit 110 is operated in advance at suspend mode (Sleep mode),
And acceleration transducer 120 senses the acceleration change of the device noumenon of electronic device 100, to generate acceleration sensing letter
Number.In the present embodiment, acceleration transducer 120 by judge acceleration sensing signal whether in predetermined time period continue
Ground is less than acceleration rate threshold to decide whether wake-up signal processing circuit 110.
Specifically, when acceleration transducer 120 judges that acceleration sensing signal is constantly small in predetermined time period
When acceleration rate threshold, the wake-up signal processing circuit 110 immediately of acceleration transducer 120, so that signal processing circuit 110 starts
Edge sensor 130.In the present embodiment, edge sensor 130 senses the deformation variation of the device noumenon of electronic device 100,
To generate distortion sensing signal.Edge sensor 130 exports distortion sensing signal to signal processing circuit 110, so that at signal
Reason circuit 110 judges whether the device noumenon of electronic device 100 occurs drop event by analysis distortion sensing signal, and
Further generate alarm signal.In other words, when acceleration transducer 120 does not judge that acceleration sensing signal is long in preset time
When being constantly less than acceleration rate threshold in degree, acceleration transducer 120 will not wake up signal processing circuit 110.If also, signal
Processing circuit 110 judges that drop event does not occur for the device noumenon of electronic device 100, then signal processing circuit 110 returns to suspend mode
Mode.It can determine whether that drop event occurs that is, the electronic device 100 of the present embodiment has simultaneously and electricity can be saved
The function of power consumption.
In the present embodiment, electronic device 100 can be for example mobile phone (Phone), tablet computer (Panel PC), wearing
Formula device (Wearable device), portable device (Portable device) or notebook computer (Notebook) etc.
Suchlike movable electronic device.In the present embodiment, signal processing circuit 110 is, for example, central processing unit
(Central Processing Unit, CPU), systemonchip (System on Chip, SOC) or other are programmable
The microprocessor (microprocessor) of general service or specific use, digital signal processor (Digital Signal
Processor, DSP), programmable controller, special application integrated circuit (Application Specific Integrated
Circuits, ASIC), programmable logic device (Programmable Logic Device, PLD), other similar processing unit
Or the combination of these devices.Signal analysis, processing and calculation function can be performed in signal processing circuit 110, to realize the present invention
Method described in each embodiment.
In the present embodiment, acceleration transducer 120 is, for example, gravity sensor (G-sensor).Acceleration transducer
120 can be used to sense uniaxial or multiaxis acceleration value, and have the function of the size for judging acceleration value.For example,
Acceleration transducer 120 is configurable on the inside of device noumenon, and adds according to the misalignment of device noumenon to correspond to generate
Velocity sense signal.Acceleration sensing signal may include X-axis acceleration value, Y-axis acceleration value and Z axis acceleration value.Also,
When acceleration transducer 120 judges X-axis acceleration value, Y-axis acceleration value and Z axis acceleration value simultaneously in predetermined time period
In constantly be less than acceleration rate threshold when, 120 wake-up signal processing circuit 110 of acceleration transducer.
In the present embodiment, in the case where the device noumenon of electronic device 100 is in drop event, due to device noumenon
During falling have inertial acceleration, therefore acceleration transducer 120 measure X-axis acceleration value, Y-axis acceleration value with
And Z axis acceleration value should be all 0 in the ideal case.But the present embodiment further considers that acceleration transducer 120 is practical
On the acceleration value that measures there may be nearmis, therefore the acceleration transducer 120 of the present embodiment is designed as adding when X-axis
When velocity amplitude, Y-axis acceleration value and Z axis acceleration value are constantly less than acceleration rate threshold in predetermined time period simultaneously,
Acceleration transducer 120, which just judges electronic device 100, to be occurred in drop event.Therefore, in one embodiment, acceleration
Sensor 120 can further comprise comparator and controller.Comparator is to compare acceleration rate threshold and acceleration sensing
Signal, to export comparison result to controller.Also, when controller judges that acceleration sensing signal is held in predetermined time period
When being less than acceleration rate threshold continuously, the exportable wake-up signal of controller to signal processing circuit, with wake-up signal processing circuit.
In the present embodiment, edge sensor 130 can be for example is put down by what multiple piezoresistors (Varistor) formed
Weigh bridge structure, and wherein balanced bridge structure can be for example Wheatstone bridge (Wheatstone bridge).Edge sensor
130 can change according to voltage value and generate corresponding digital value, using as distortion sensing signal.In the present embodiment, edge passes
Sensor 130 is configurable on the specific bezel locations of the device noumenon of electronic device 100, to sense the device sheet of electronic device 100
Whether this specific bezel locations of body are under pressure and deformation.
For example, in one embodiment, electronic device 100 can be for example mobile device.When user is by electronic device
100 when being placed in the position of e.g. knapsack or pocket, since electronic device 100 is not at by mode of operation, electronics
100 possible operation of device is at dormant state (in addition to acceleration transducer 120).However, if electronic device 100 is fallen,
Electronic device 100 can judge automatically whether drop event occurs, to wake up electronic device 100.Therefore, electronic device 100 can be
When issue warning to inform user, or execute related protective program, the present invention is not limited thereto.
Fig. 2 is painted the block diagram of the electronic device of another embodiment of the present invention.With reference to Fig. 2, electronic device 200 includes signal
Processing circuit 210, acceleration transducer 220 and multiple edge sensing module 230_1,230_2~230_N, wherein N be greater than
0 positive integer.In the present embodiment, these edge sensing module 230_1,230_2~230_N, which can be for example, is arranged respectively at electricity
Multiple bezel locations of the device noumenon of sub-device 200, so that these bezel locations of the device noumenon of electronic device 200 can shape
At multiple sensing regions.Also, these edge sensing module 230_1,230_2~230_N can further comprise that edge passes respectively
Sensor C1_1, C1_2~C1_M, C2_1, C2_2~C2_M, CN_1, CN_2~CN_M, wherein M is the positive integer greater than 0.Also
It is to say, in the present embodiment, the device noumenon of electronic device 200 can configure multiple sensing regions, to increase judgment means ontology
Whether the accuracy and acuity of drop event are occurred.These sensing regions can be for example the device noumenon of electronic device 200
Upside, downside, left side, right side, upper left side corner, upper right-hand corner are fallen, lower left side corner, lower right-hand corner are fallen, front side or back side
Deng the present invention is not limited thereto.Subsidiary one is mentioned that, when electronic device 200 is operated at normal mode (Normal mode)
When, these edge sensing module 230_1,230_2~230_N can be applied to the relevant operation function or software of electronic device 200
Using etc..
In the present embodiment, signal processing circuit 210 includes signal processor 211, analog-to-digital converter
(Analog-to-Digital Converter, ADC) 212, multiplexer (Multiplexer) 213, filter (Filter)
214, amplifier (Amplifier) 215 and clock generator (Clock Generator) 216.In the present embodiment, multiplexing
Device 213 couples these edge sensors C1_1, C1_2~C1_M, C2_1, C2_2~C2_M, CN_1, CN_2~CN_M.Multiplexer
It is out of the ordinary that 213 time-divisions received these edge sensors C1_1, C1_2~C1_M, C2_1, C2_2~C2_M, CN_1, CN_2~CN_M
The distortion sensing signal of offer, and exporting has the distortion sensing signal of identical sampling length to filter 214 and amplification
Device 215.In the present embodiment, filter 214 is to filter distortion sensing signal, to eliminate noise.Amplifier 215 is to amplify
Filtered distortion sensing signal, to increase signal strength.In the present embodiment, analog-to-digital converter 212 will simulate shape
The distortion sensing signal of formula is converted to digital form, and exports to signal processor 211.In the present embodiment, clock generates
Device 216 can provide multiple clock signals to analog-to-digital converter 212, multiplexer 213 and amplifier 215, to synchronize this
The operation timing of a little circuit elements.
In the present embodiment, signal processor 211 can such as digital signal processor (Digital Signal
Processor, DSP), systemonchip (System-on-a-Chip, SoC) or special application integrated circuit (Application
Specific Integrated Circuit, ASIC) etc. suchlike processing circuit.Signal processor 211 can be analyzed through turning
Whether the distortion sensing signal changed occurs drop event with judgment means ontology.Also, work as 211 judgment means sheet of signal processor
When drop event occurs for body, signal processor 211 can further export the other function circuit of alarm signal to electronic device 200
Element or application program, to execute preset alarm function.
It is worth noting that, the quantity of edge sensing module and edge sensor of the invention is not limited to shown in Fig. 2.
In one embodiment, electronic device 200 can only include single a edge sensor, to sentence by this single a edge sensor
Whether deformation occurs for the specific side of the device noumenon of power-off sub-device 200.Also, signal processing circuit 210 can not also configure
Multiplexer 213.Signal processing circuit 210 can directly receive the distortion sensing signal that thus single a edge sensor provides.This
Outside, in another embodiment, electronic device 200 can not also configure filter 214 and amplifier 215, to pass through from analog to number
Word converter 212 directly receives distortion sensing signal.That is, the electronic device 200 of the present embodiment can be according to different dresses
Demand, product design or circuit configuration are set multiplexer 213, filter 214, amplifier 215 and clock is selectively arranged and produces
Raw device 216.
Fig. 3 is painted the schematic diagram of the electronic device of one embodiment of the invention.With reference to Fig. 3, in the present embodiment, electronic device
300 be mobile device.The left side LS frame of the device noumenon 300B of electronic device 300 be provided with multiple edge sensor S1, S2,
S3, and the right side RS frame of device noumenon 300B is provided with multiple edge sensor S4, S5, S6.In the present embodiment, electronics
The signal processing circuit and acceleration being provided with as described in above-mentioned Fig. 1 or Fig. 2 embodiment in the device noumenon 300B of device 300 pass
Sensor.In the present embodiment, when electronic device 300 executes normal operation, these edge sensors S1~S6 can be used for providing
User can press or touch control operation, with the related application function in response to electronic device 300.
Fig. 4 is painted the schematic diagram of the acceleration sensing signal of one embodiment of the invention.With reference to Fig. 3 and Fig. 4, in this implementation
In example, when electronic device 300 executes normal mode, the acceleration transducer of electronic device 300 can sense electronic device 300
The acceleration change of device noumenon 300B.For example, the acceleration transducer of electronic device 300 can sense as shown in Figure 4
Acceleration sensing signal.In the present embodiment, acceleration sensing signal may include X-axis acceleration value Ax, Y-axis acceleration value Ay with
And Z axis acceleration value Az.Also, when user normally and fixedly uses electronic device 300, due to device noumenon 300B
Violent displacement does not occur.Therefore, X-axis acceleration value Ax, Y-axis acceleration value Ay and Z axis acceleration value Az can be all compared with
Low numerical value.
Fig. 5 is painted the schematic diagram of the distortion sensing signal of one embodiment of the invention.Fig. 6 is painted the oblique of one embodiment of the invention
The schematic diagram of rate change profile.With reference to Fig. 3, Fig. 5 and Fig. 6, in the present embodiment, when electronic device 300 executes normal mode
When, these edge sensors S1~S6, which can be used for providing user, can press or touch control operation, to execute electronic device 300
Related application function.Therefore, these edge sensors S1~S6 of electronic device 300 can sense as shown in Figure 5 more
A distortion sensing signal.In the present embodiment, when user does not press (normal state) these edge sensors S1~S6
Or electronic device 300, when being static condition, these distortion sensing signals of these edge sensors S1~S6 are all without apparent several
The variation of word value.In the present embodiment, when user presses (hold state) these edge sensors S1~S6, these edges
These distortion sensing signals of sensor S1~S6 can be different according to the press degree of user respectively, and have apparent number
Value variation.
Also, in the present embodiment, signal processing circuit can analyze these shapes of these edge sensors S1~S6 offer
Become sensing signal, to obtain the slope variation distribution of these distortion sensing signals as shown in FIG. 6, wherein slope shown in fig. 6
Value can be determined by digital value divided by time value (digital value/time value).In the present embodiment, correspond to these edge sensors
These slope values of the distortion sensing signal of S1~S6 change in proper order with press degree.
Fig. 7 is painted the flow chart for falling alarming method for power of one embodiment of the invention.The alarming method for power that falls of the present embodiment can
Suitable for Fig. 1 to the electronic device of Fig. 3 embodiment.With reference to Fig. 3 and Fig. 7, in the present embodiment, electronic device 300 is mobile phone
Device.The left side LS frame of the device noumenon 300B of electronic device 300 is provided with multiple edge sensor S1~S3, and device
The right side RS frame of ontology 300B is provided with multiple edge sensor S4~S6.In the present embodiment, the device of electronic device 300
The signal processing circuit and acceleration transducer being provided in ontology 300B as described in above-mentioned Fig. 1 or Fig. 2 embodiment, so that electronics
Following steps can be performed in device 300.
In step s 701,300 operation signal processing circuit (signal processor) of electronic device is in suspend mode.In step
In S702, the signal processing circuit and edge sensor S1~S6 of electronic device 300 are that operation is in suspend mode in advance, still
The acceleration transducer of electronic device 300 is continued operation, so that electronic device 300 can be sentenced immediately by acceleration transducer
Whether disconnected acceleration sensing signal is less than acceleration rate threshold.If so, thening follow the steps S703, the acceleration of electronic device 300 is passed
Sensor further judges whether acceleration sensing signal continues predetermined time period and be less than acceleration rate threshold.If it is not, then electronics fills
It sets 300 and continues to execute step S701.In the present embodiment, acceleration rate threshold can be for example 0.1 (m/s2)、1(m/s2) or 2 (m/
s2) etc., and predetermined time period can be for example 0.1 millisecond (ms), 1 millisecond (ms), 10 milliseconds (ms).Acceleration rate threshold and
Predetermined time period can determine that the present invention is not limited thereto according to different device demand or product design.
In step S703, when the acceleration transducer of electronic device 300 judges that acceleration sensing signal continues one in advance
If time span is less than acceleration rate threshold.Electronic device 300 executes step S704.In step S704, electronic device 300
Acceleration transducer wake-up signal processing circuit.In step S705, the multiple edge sensor S1 of signal processing circuit starting~
S6, with the deformation degree of multiple sensing regions of sensing device ontology 300B.In step S706, the signal of electronic device 300
Processing circuit can sample these edge sensors S1~S6 by multiplexer come the time-division, to obtain multiple distortion sensing signals.?
In step S707, the signal processing circuit of electronic device 300 can filter by filter and amplifier and enhance these shapes
Become sensing signal.In step S708, the signal processing circuit of electronic device 300 can be converted by analog-to-digital converter
These distortion sensing signals are converted to digital signal by analog signal by these distortion sensing signals.In step S709, electricity
The signal processing circuit of sub-device 300 can analyze these distortion sensing signals by signal processor.In step S710, electricity
The signal processor of sub-device 300 can judge the device of electronic device 300 according to the analysis result of these distortion sensing signals
Whether ontology 300B occurs drop event.Also, in step S711, the exportable police of the signal processing circuit of electronic device 300
Show signal.
In addition, relevant apparatus feature, technical detail and the embodiment of the electronic device 300 about the present embodiment can be
In the embodiment of above-mentioned Fig. 1 to Fig. 6, enough teachings are obtained, suggests and implements explanation, therefore are repeated no more.However, in order to
Make those skilled in the art that can further appreciate that concrete signal analysis and the judgment mode of step S709 and step S710, with
Under illustrated by Fig. 8 to Figure 10.
Fig. 8 is painted the schematic diagram of the acceleration sensing signal of another embodiment of the present invention.With reference to Fig. 3, Fig. 7 and Fig. 8,
In the present embodiment, the acceleration transducer of electronic device 300 can sense acceleration sensing signal as shown in Figure 8.In this implementation
In example, acceleration sensing signal may include X-axis acceleration value Ax, Y-axis acceleration value Ay and Z axis acceleration value Az.Citing and
Speech, when user's carrying electronic devices 300 are mobile towards X-direction (Normal state), X-axis acceleration value Ax may be spy
Fixed number value, and Y-axis acceleration value Ay and Z axis acceleration value Az are about 0.However, when electronic device 300 falls thing
When part (Free fall movement state), since the device noumenon 300B of electronic device 300 has during falling
Inertial acceleration, therefore X-axis acceleration value Ax, Y-axis acceleration value Ay and Z axis acceleration value Az may be about being 0.Therefore,
The acceleration transducer of electronic device 300 can judge X-axis acceleration value Ax, Y-axis acceleration value Ay and Z axis acceleration value immediately
Whether Az is constantly less than acceleration rate threshold in predetermined time period simultaneously.If so, at acceleration transducer wake-up signal
Manage circuit.Also, (Strike state), acceleration transducer when the device noumenon 300B of electronic device 300 falls ground
Violent acceleration value variation can be sensed, therefore in moment X-axis acceleration value Ax, Y-axis acceleration value Ay and the Z axis fallen
Acceleration value Az has variation by a relatively large margin.That is, in one embodiment, electronic device 300 can also further by
Judge the numerical value change for X-axis acceleration value Ax, the Y-axis acceleration value Ay and Z axis acceleration value Az that acceleration transducer provides
As a result to determine whether drop event occurs.
Fig. 9 is painted the schematic diagram of the distortion sensing signal of another embodiment of the present invention.Figure 10 is painted another implementation of the present invention
The schematic diagram of the slope variation distribution of example.With reference to Fig. 3, Fig. 7, Fig. 9 and Figure 10, in the present embodiment, when electronic device 300
When signal processing circuit is waken up, these edge sensors S1~S6 can be used for the correspondence sensing region of sensing device ontology 300B
Bezel locations deformation variation.For example, when user's carrying electronic devices 300 are in situation of movement or non-moving situation
(Normal state), multiple distortion sensing signals of these edge sensors S1~S6 sensing are all without significant change.Also, work as
Electronic device 300 occurs when drop event (Free fall movement state), due to the device noumenon of electronic device 300
300B is not under pressure and deformation during falling, therefore these distortion sensings of these edge sensors S1~S6 sensing
Signal is still without significant change.However, when the device noumenon 300B of electronic device 300 falls ground (Strike state),
These edge sensors S1~S6 can sense different and violent deformation variations respectively.Especially fallen in device noumenon 300B
The moment on ground, these edge sensors S1~S6 can sense the digital value variation of moment.
In the present embodiment, signal processing circuit can analyze these distortion sensings of these edge sensors S1~S6 offer
Signal, to obtain the slope variation distribution of these distortion sensing signals as shown in Figure 10.For example, correspond to edge to sense
The bezel locations of device S1 may be device noumenon 300B and first, ground contact position, therefore edge sensor S1 is sensed
Distortion sensing signal in the moment that device noumenon 300B falls ground there is violent digital value to change.That is, electronics fills
The signal processor for setting 300 can determine whether that these slope variations corresponding to these edge sensors S1~S6 are distributed at least within
One of whether with slope value the unit time slope variation amount be greater than slope threshold value, fallen with judgment means ontology 300B
Fall event.Again for example, as shown in Figure 10, signal processor can determine whether correspond to this between time point 3 to time point 4
Whether at least one of slope variation of a little edge sensor S1~S6 is greater than slope threshold value, and wherein slope threshold value can be such as
It is 10000 or 20000.Therefore, the signal processor of electronic device 300 accurately can fall ground by judgment means ontology 300B,
Further to export alarm signal.
In addition, in one embodiment, electronic device 300 can further have the function of the above-mentioned slope threshold value of adjustment.Citing
For, when may gently be thrown in user, play or firmly be placed due to electronic device 300, these edge sensors S1~S6 meets with
To accidentally touching, cause the erroneous judgement of electronic device 300 that drop event occurs and generates alarm signal.Therefore, in another embodiment, electronics dress
Set 300 signal processor can analyze distortion sensing signal up and down slope, and can allow judge that semaphore is big
Study mechanism that is small, calculating movement of falling object time and user's usage behavior, to improve the analysis of distortion sensing signal
Accuracy.Again for example, the signal processor of electronic device 300 can be when generating alarm signal every time, and electronic device 300 mentions
For confirmation message to user, to pass through user's feedback and be confirmed whether that drop event really occurs.Therefore, electronic device
300 signal processor can record multiple events, judge whether the size of slope threshold value is too high or too low with confluence analysis, with logical
It crosses the mode learnt automatically and carrys out the tuned slope threshold value, and then the signal processor for promoting electronic device 300 judges drop event
Accuracy.
Figure 11 is painted the flow chart for falling alarming method for power of another embodiment of the present invention.With reference to Fig. 1 and Figure 11, the present invention
Fall alarming method for power can at least be suitable for Fig. 1 embodiment electronic device 100.In step S1110, electronic device 100 is grasped
Make signal processing circuit 110 in suspend mode.In step S1120, electronic device 100 is sensed by acceleration transducer 120
The acceleration change of device noumenon, to generate acceleration sensing signal.Also, electronic device 100 is by acceleration transducer 120
Judge whether acceleration sensing signal is constantly less than acceleration rate threshold in predetermined time period, with wake-up signal processing circuit
110.In step S1130, when 120 wake-up signal processing circuit 110 of acceleration transducer, electronic device 100 is by signal
Processing circuit 110 starts edge sensor 130, and changes by the deformation of 130 sensing device ontology of edge sensor, to produce
Raw distortion sensing signal.In step S1140, electronic device 100 analyzes distortion sensing signal by signal processing circuit 110,
Whether drop event occurs with judgment means ontology.Therefore, the electronic device 100 of the present embodiment has can determine whether to send out simultaneously
Raw drop event and the function that power consumption can be saved.
In addition, relevant apparatus feature, technical detail and the embodiment of the electronic device 100 about the present embodiment can be
In the embodiment of above-mentioned Fig. 1 to Figure 10, enough teachings are obtained, suggests and implements explanation, therefore are repeated no more.
In conclusion electronic device of the invention and falling alarming method for power and can effectively judge the device noumenon of electronic device
Whether drop event is occurred.When drop event may occur for the judgement of the acceleration transducer of electronic device, the letter of electronic device
Number processing circuit and edge sensor can be just waken up, to carry out further acceleration sensing and signal analysis, so that
Electronic device can accurately be confirmed whether that drop event occurs, and can export alarm signal immediately.In addition, electronics of the invention
Device and fall alarming method for power also and have the function of saving the power consumption of signal processing circuit and edge sensor.
Although the present invention is disclosed as above with embodiment, however, it is not to limit the invention, and those skilled in the art exist
It does not depart from the spirit and scope of the present invention, when can make some changes and embellishment, therefore protection scope of the present invention is appended by the view
Subject to claims confining spectrum.
Claims (16)
1. a kind of electronic device, which is characterized in that there is device noumenon, the electronic device includes:
Signal processing circuit is operated in suspend mode；
Acceleration transducer couples the signal processing circuit, to sense the acceleration change of described device ontology, to generate
Acceleration sensing signal, wherein whether the acceleration transducer judges the acceleration sensing signal in predetermined time period
It is less than acceleration rate threshold, constantly to wake up the signal processing circuit；And
An at least edge sensor couples the signal processing circuit, when the acceleration transducer wakes up the signal processing
When circuit, the signal processing circuit starts an at least edge sensor, and an at least edge sensor is to sense
The deformation of described device ontology changes, to generate an at least distortion sensing signal,
Wherein the signal processing circuit analyzes an at least distortion sensing signal, to judge whether described device ontology occurs
Drop event.
2. electronic device according to claim 1, which is characterized in that if the signal processing circuit judges described device sheet
The drop event occurs for body, then the signal processing circuit generates alarm signal, and if signal processing circuit judgement
The drop event does not occur for described device ontology, then the signal processing circuit is re-operated in the suspend mode.
3. electronic device according to claim 1, which is characterized in that the acceleration transducer configuration is in described device sheet
In body, and the acceleration sensing signal includes X-axis acceleration value, Y-axis acceleration value and Z axis acceleration value,
Wherein when the acceleration transducer judges that the X-axis acceleration value, the Y-axis acceleration value and the Z axis accelerate
When angle value is constantly less than the acceleration rate threshold in the predetermined time period simultaneously, the acceleration transducer wakes up institute
State signal processing circuit.
4. electronic device according to claim 1, which is characterized in that the acceleration transducer includes comparator and control
Device processed, and the comparator compares knot to the acceleration rate threshold and the acceleration sensing signal with output
Fruit to the controller,
Wherein when the controller judges the acceleration sensing signal in the predetermined time period constantly less than described
When acceleration rate threshold, the controller exports wake-up signal to the signal processing circuit.
5. electronic device according to claim 1, which is characterized in that an at least edge sensor is multiple pressure-sensitive electricity
The balanced bridge structure of device composition is hindered, and at least edge sensor configuration is in an at least frame for described device ontology
Position.
6. electronic device according to claim 1, which is characterized in that the signal processing circuit includes:
Analog-to-digital converter couples an at least distortion sensing signal, to receive at least distortion sensing letter
Number, and convert an at least distortion sensing signal；And
Signal processor couples the analog-to-digital converter, to receive the converted at least distortion sensing letter
Number, and a converted at least distortion sensing signal is analyzed, to judge whether described device ontology occurs described fall
Event.
7. electronic device according to claim 6, which is characterized in that the signal processor analyze it is described it is converted extremely
A few distortion sensing signal to obtain there is the slope variation of multiple slope values to be distributed, and the signal processor judges this
Whether a little slope values there is slope variation amount to be greater than slope threshold value, to judge that the drop event occurs for described device ontology.
8. electronic device according to claim 6, which is characterized in that the signal processing circuit further include:
Multiplexer couples an at least edge sensor, receives an at least distortion sensing signal to the time-division, and defeated
An at least distortion sensing signal for identical sampling length is provided, wherein the quantity of an at least edge sensor is more
It is a.
9. one kind falls alarming method for power, which is characterized in that be suitable for electronic device, and the electronic device includes device sheet
Body, which comprises
Operation signal processing circuit is in suspend mode；
By the acceleration change of acceleration transducer sensing described device ontology, to generate acceleration sensing signal, and by
Judge whether the acceleration sensing signal is constantly less than acceleration in predetermined time period by the acceleration transducer
Threshold value, to wake up the signal processing circuit；
When the acceleration transducer wakes up the signal processing circuit, at least on one side by signal processing circuit starting
Edge sensor, and change by the deformation of at least edge sensor sensing described device ontology, to generate at least one
Distortion sensing signal；And
An at least distortion sensing signal is analyzed by the signal processing circuit, to judge whether described device ontology occurs
Drop event.
10. according to claim 9 fall alarming method for power, which is characterized in that further include:
If the signal processing circuit judges that the drop event occurs for described device ontology, by the signal processing circuit
Generate alarm signal；And
If the signal processing circuit judges that the drop event does not occur for described device ontology, by the signal processing electricity
Road is re-operated in the suspend mode.
11. according to claim 9 fall alarming method for power, which is characterized in that the acceleration transducer configuration is described
In device noumenon, and the acceleration sensing signal includes X-axis acceleration value, Y-axis acceleration value and Z axis acceleration value,
Wherein by the acceleration transducer judge the acceleration sensing signal whether in the predetermined time period constantly
Less than the acceleration rate threshold, to wake up signal processing circuit the step of includes:
When the acceleration transducer judges the X-axis acceleration value, the Y-axis acceleration value and the Z axis acceleration value
When being constantly less than the acceleration rate threshold in the predetermined time period simultaneously, institute is waken up by the acceleration transducer
State signal processing circuit.
12. according to claim 9 fall alarming method for power, which is characterized in that the acceleration transducer includes comparator
And controller, wherein judging whether the acceleration sensing signal is long in the preset time by the acceleration transducer
Constantly it is less than the acceleration rate threshold in degree, to wake up signal processing circuit the step of includes:
By the comparator to the acceleration rate threshold and the acceleration sensing signal, to export comparison result
To the controller；And
When the controller judges that the acceleration sensing signal is constantly less than the acceleration in the predetermined time period
When spending threshold value, wake-up signal is exported to the signal processing circuit by the controller.
13. according to claim 9 fall alarming method for power, which is characterized in that an at least edge sensor is multiple
Piezoresistor composition balanced bridge structure, and an at least edge sensor configuration described device ontology at least
One bezel locations.
14. according to claim 9 fall alarming method for power, which is characterized in that the signal processing circuit includes simulating extremely
Digital quantizer and signal processor, wherein an at least distortion sensing signal is analyzed by the signal processing circuit,
To judge that the step of whether described device ontology occurs the drop event includes:
An at least distortion sensing signal is received by the analog-to-digital converter, and converts an at least deformation
Sensing signal；And
A converted at least distortion sensing signal is received by the signal processor, and is analyzed described converted
An at least distortion sensing signal, to judge whether described device ontology occurs the drop event.
15. according to claim 14 fall alarming method for power, which is characterized in that by described in signal processor reception
A converted at least distortion sensing signal, and a converted at least distortion sensing signal is analyzed, described in judgement
The step of whether device noumenon occurs the drop event include:
A converted at least distortion sensing signal is analyzed by the signal processor, there are multiple slope values to obtain
Slope variation distribution；And
Judge whether these slope values there is slope variation amount to be greater than slope threshold value by the signal processor, described in judgement
The drop event occurs for device noumenon.
16. according to claim 14 fall alarming method for power, which is characterized in that the signal processing circuit further includes multiplexing
Device, and the quantity of an at least edge sensor is multiple, wherein by described at least edge sensor sensing
The deformation of device noumenon changes, and includes: the step of an at least distortion sensing signal to generate
An at least distortion sensing signal is received by the multiplexer time-division, and exports the institute with identical sampling length
State an at least distortion sensing signal.
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