CN105698980A - Electronic device and external force detecting method thereof - Google Patents
Electronic device and external force detecting method thereof Download PDFInfo
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- CN105698980A CN105698980A CN201410709803.4A CN201410709803A CN105698980A CN 105698980 A CN105698980 A CN 105698980A CN 201410709803 A CN201410709803 A CN 201410709803A CN 105698980 A CN105698980 A CN 105698980A
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- strain gauge
- electronic installation
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- deformation quantity
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Abstract
The present invention discloses an electronic device and an external force detecting method thereof. The electronic device comprises a shell, a strain gauge and a control module. The strain gauge comprises a substrate and a metal sensitive gate. One side of the substrate is connected to one side of the shell, and the metal sensitive gate is arranged at the other side of the substrate. The control module is used for detecting the resistance value of the metal sensitive gate and determines the deformation quantity connected to the shell of the strain gauge according to the deformation quantity of the resistance value. According to the electronic device and the external force detecting method thereof, a user can know whether the electronic device is influenced or pressed by an abnormal external force.
Description
Technical field
This disclosure relates to a kind of its external force method for detecting of electronic installation, and utilizes strain gauge (straingauge) to detect its external force method for detecting of electronic installation of external force in particular to one。
Background technology
In recent years, along with the fast development of science and technology, the compact basic demand having become as electronic installation, such as ultra-thin notebook computer, tablet PC or intelligent mobile phone。
But, move frequently due to user and use electronic installation, can inadvertently make electronic installation be subject to the impact of external force unavoidably, in the course of time, have the damage being greatly likely to result in electronic installation。
In addition, the internal mechanisms such as the casing due to electronic installation have cost consideration, therefore the design of the overwhelming majority still has reliability to limit, and the typically not abnormal occupation mode (such as unsuitable hand-held action) of considering of its reliability, therefore, in use for some time, casing is easily deformed damage, and internal circuit is easily short-circuit or internal sensor (sensor) loses function。
Therefore, how to make electronic installation effectively detect external force, and inform that consumer electronic device is being subject to the compressing of external force, and then user can be moved on to by electronic installation without external force pressure part in real time, one of current important research and development problem of real genus, also becomes currently associated field and needs the target of improvement badly。
Summary of the invention
For solving above-mentioned problem, the present invention proposes a kind of electronic installation and external force method for detecting thereof。
A kind of electronic installation provided by the invention comprises:
One casing；
One first strain gauge, comprises:
One first substrate, the side of this first substrate is connected to the side of this casing；And
One first metal sensitive grid, is arranged at the opposite side of this first substrate；And
One controls module, and in order to detect one first resistance value of this first metal sensitive grid, and one first variable quantity according to this first resistance value determines to be connected to one first deformation quantity of this casing of this first strain gauge。
In one embodiment of this invention, the first strain gauge has one first strain gauge coefficient, controls module and more determines this first deformation quantity of this casing in order to the first variable quantity according to the first resistance value and this first strain gauge coefficient。
In one embodiment of this invention, metal sensitive grid comprises one first end and one second end, controls module and more comprises one first resistance, one second resistance, one the 3rd resistance and a galvanometer；One first end of the second resistance is electrically connected at one first end of the first resistance, and one second end of the second resistance is electrically connected at the first end of metal sensitive grid；Galvanometer is electrically connected between one second end and second end of the second resistance of the first resistance；One first end of the 3rd resistance is electrically connected at the second end of the first resistance, and one second end of the 3rd resistance is electrically connected at the second end of metal sensitive grid。
In one embodiment of this invention, electronic installation more comprises one second strain gauge, and the second strain gauge comprises a second substrate and one second metal sensitive grid；Second substrate and the first insulated substrate are connected to the same side of casing, and the second metal sensitive grid is arranged at the opposite side of second substrate；Control module more in order to detect one second resistance value of the second metal sensitive grid, and one second variable quantity according to the second resistance value determines to be connected to one second deformation quantity of this casing of the second strain gauge, wherein, this first deformation quantity and this second deformation quantity correspond to the diverse location of this casing。
In one embodiment of this invention, electronic installation more comprises a storage module；Storage module is electrically coupled to control module, wherein, when the first deformation quantity is more than a first threshold, controls module in order to record the first deformation quantity and corresponding to a time point of the first deformation quantity in storage module。
In one embodiment of this invention, electronic installation more comprises an alarm module；Alarm module is electrically coupled to control module, and when the first deformation quantity is more than a Second Threshold, alarm module is in order to produce an information warning。
In one embodiment of this invention, electronic installation more comprises a uninterrupted power supply module；When this electronic installation is for shutdown, uninterrupted power supply module is in order to provide a power supply to controlling module。
The external force method for detecting of a kind of electronic installation that the present invention also provides for a, it is adaptable to electronic installation, wherein, electronic installation comprises a casing and is connected to a strain gauge of casing；External force method for detecting comprises the steps of a resistance value of detecting strain gauge；And the variable quantity according to resistance value determines to be connected to a deformation quantity of the casing of strain gauge。
In one embodiment of this invention, strain gauge has a strain gauge coefficient, determines that according to the variable quantity of resistance value the step of the deformation quantity of casing more comprises: determine the deformation quantity of casing according to this strain gauge coefficient of the variable quantity of resistance value and strain gauge。
In one embodiment of this invention, external force method for detecting more comprises the steps of when deformation quantity is more than a first threshold, records deformation quantity and the time point corresponding to deformation quantity；And when deformation quantity is more than a Second Threshold, produce an information warning。
In sum, this case provides electronic installation and external force method for detecting thereof can allow user can learn whether electronic installation is subject to impact or the compressing of abnormal external force。
Accompanying drawing explanation
For the above and other purpose of the present invention, feature, advantage and embodiment can be become apparent, the explanation of institute's accompanying drawings is as follows:
Figure 1A is the schematic diagram of the electronic installation represented by this case one embodiment；
Figure 1B is the block schematic diagram of the electronic installation represented by this case one embodiment；
Fig. 2 is the schematic diagram of the strain gauge represented by this case one embodiment；
Fig. 3 is the circuit diagram of the control module represented by this case one embodiment and strain gauge；And
Fig. 4 is the flow chart of the external force method for detecting represented by this case one embodiment。
100: electronic installation
101: display module
102: casing
104: strain gauge
106: control module
108: power module
110: storage module
112: alarm module
202: substrate
204: metal sensitive grid
T1: the first end
T2: the second end
R1: the first resistance
R2: the second resistance
R3: the three resistance
R4: resistance
302: galvanometer
400: external force method for detecting
Detailed description of the invention
The reference utilizing accompanying drawings in this manual is stated by this case more fully, and wherein accompanying drawings is painted with the embodiment of this case。But this case realizes in many different forms and should not be so limited to the embodiment that this specification is stated。The proposition of these embodiments makes this specification detailed and complete, and will give full expression to this case scope and give the usual skill of this case art。Ref. No. identical herein means same or similar assembly。
About " first " used herein, " second " etc., not censuring the meaning of order or cis-position especially, be also not used to limit this case, it is only used to distinguish the assembly or operation that describe with constructed term。Not refer in particular to the meaning of relative size about " module " used herein and " assembly ", be also not used to limit this case。
When an assembly is referred to as " connection " or " coupling " to another assembly, it for being directly connected to or be coupled to another assembly, can have again or wherein an additional assemblies to exist。
With reference to Figure 1A, Figure 1A is the schematic diagram of the electronic installation 100 represented by this case one embodiment, electronic installation 100 comprises display module 101, casing 102 and strain gauge (spraingauge) 104, wherein strain gauge 104 is connected to the inner side of casing 102, further, strain gauge 104 is connected by the inner side of adhesive with casing 102。
In the present embodiment, electronic installation 100 is for intelligent mobile phone, but electronic installation 100 is not limited thereto。In certain embodiments, electronic installation 100 also can be tablet PC, notebook computer or Wearable device (wearabledevice)。
In the lump with reference to Figure 1B more clearly to describe the internal structure of electronic installation 100, Figure 1B is the block schematic diagram of the electronic installation 100 according to this case one embodiment depicted。Electronic installation 100 comprises display module 101, strain gauge 104, controls module 106, power module 108, storage module 110 and alarm module 112, wherein, display module 101, control module 106, power module 108, storage module 110 and the mutual electric property coupling of alarm module 112, control module 106 and be electrically coupled to strain gauge 104。
Display module 101 can be a touch-control display panel, in order to provide user one show picture and detect a touch-control input of user。
Casing 102 is in order to be coated with and to protect the internal circuit of electronic installation 100。
Strain gauge 104 has a strain gauge coefficient, and as shown in Figure 1A, strain gauge 104 is connectable to the diverse location in casing 102, in order to detect the deformation quantity that on electronic installation 100, diverse location produces because of external strength。In the lump with reference to Fig. 2 to further illustrate the structure of strain gauge 104, Fig. 2 is the schematic diagram of the strain gauge 104 according to this case one embodiment depicted, and strain gauge 104 comprises substrate 202, metal sensitive grid the 204, first end T1 and the second end T2。
The side of substrate 202 may connect to the inner side of casing 102, and metal sensitive grid 204 is arranged at the opposite side of substrate 202。First end T1 and the second end T2 is electrically connected at the two ends of metal sensitive grid 204。It should be noted that metal sensitive grid 204 also deforms therewith so that the resistance value of metal sensitive grid 204 can produce corresponding change when the position of the casing 102 that strain gauge 104 connects is deformed by external strength。
Return to Figure 1B, control module 106 in order to detect the resistance value of the metal sensitive grid 204 of strain gauge 104, and the variable quantity according to described resistance value determines to be connected to the deformation quantity of the casing 102 of strain gauge 104。More specifically, the deformation quantity that module 106 determines the corresponding link position of casing 102 in order to the variable quantity of the resistance value according to metal sensitive grid 204 and the strain gauge coefficient of this strain gauge 104 is controlled。
In certain embodiments, control module 106 and comprise a microcontroller, a central processing unit or a control circuit。
In the lump with reference to Fig. 3 to illustrate to control how module 106 measures the resistance value of strain gauge 104, Fig. 3 is the circuit diagram of the control module 106 according to this case one embodiment depicted and strain gauge 104。Control module 106 and be electrically connected at strain gauge 104, and reception comes from the power supply that power module 108 provides。
Control module 106 and more comprise one first resistance R1, one second resistance R2, one the 3rd resistance R3 and a galvanometer 302。First end of the first resistance R1 is electrically connected at the first end and the power module 108 of this second resistance R2。Second end of the first resistance R1 is electrically connected at first end of the 3rd resistance R3 and one end of galvanometer 302。Second end of the second resistance R2 is electrically connected at one end of strain gauge 104 and the other end of galvanometer 302, and more precisely, second end of the second resistance R2 is electrically connected at one end of metal sensitive grid 204 and the other end of galvanometer 302。Second end of the 3rd resistance R3 is electrically connected at the other end and the power module 108 of strain gauge 104, and more precisely, second end of the 3rd resistance R3 is electrically connected at the other end and and the power module 108 of metal sensitive grid 204。
It should be noted that, owing to the resistance of galvanometer 302 is almost nil, therefore galvanometer 302 can be considered short circuit, therefore, first resistance R1, the second resistance R2, the 3rd resistance R3 and strain gauge 104 equivalence can be considered as this same electric bridge (Wheatstonebridge) of a favour, favour department may be used to measure unknown resistance with electric bridge, in the present embodiment, is the resistance R4 of strain gauge 104 (i.e. metal sensitive grid 204)。For example, if the resistance value of the first resistance R1 and the second resistance R2 is identical, owing to galvanometer 302 can be considered short circuit, flow through the size of current identical (electric current I1) of the first resistance R1 and the second resistance R2, assume that the electric current flowing through galvanometer 302 (flowing to second end of the second resistance R2 from second end of the first resistance R1) is I2, (I1-I2) × R3=(I1+I2) × R4 can be obtained, therefore, resistance R4=[(I1-I2)/(I1+I2)] × R4 of strain gauge 104。
Subsequently, the relation of the resistance of deformation quantity, strain gauge coefficient and strain gauge 104 can represented by following equation (1):
ε=△ R/ (Ro × GF) ... ... ... ... ... ... ... ... ... ... ... (1)
Wherein, ε is deformation quantity, and △ R is the change of metal sensitive grid 204, and Ro is metal sensitive grid 204 resistance sizes (being namely not yet subject to the resistance sizes that external force deforms) originally, and GF is the strain gauge coefficient of strain gauge 104。Above equation, controls module 106 and can learn the deformation quantity of strain gauge 104 location。
Returning to Figure 1B, power module 108 is in order to provide power supply to display module 101, to control module 106, storage module 110 and alarm module 112。In certain embodiments, electronic installation 100 also comprises uninterrupted power supply module (not illustrating), and wherein, when electronic installation 100 is for shutdown, uninterrupted power supply module is in order to provide power supply to controlling module 106, storage module 110 and alarm module 112。
In certain embodiments, power module 108 and uninterrupted power supply module can be identical or different module。When power module 108 and uninterrupted power supply module are different module, power module 108 is more in order to described uninterrupted power supply module of charging, making when electronic installation 100 is for off-mode, uninterrupted power supply module is in order to provide power supply to controlling module 106, storage module 110 and alarm module 112。
Storage module 110 is in order to when the deformation quantity of casing 102 is more than a first threshold, it is provided that storage area is to record the deformation quantity of casing 102 and to correspond to a time point of described deformation quantity。In addition, owing to strain gauge 104 is applicable to the different ad-hoc locations of casing 102, storage module 110 is more in order to the deformation quantity of the ad-hoc location that prestores and the abnormal occupation mode corresponding to described deformation quantity, it is excessive that single-point such as electronic installation 100 presses power, the single-point hand-held supports point stress of electronic installation 100 is excessive, electronic installation 100 is excessive by curved/distortion power, Liquid Crystal Module (the liquiddisplaymodule of electronic installation 100, LCM, display module 101 such as Figure 1A can be Liquid Crystal Module) excessive by pulling force with pedestal, Liquid Crystal Module rotation urging point position is inappropriate, Liquid Crystal Module velocity of rotation is too fast, Liquid Crystal Module and the moment of pedestal close excessive with joint efforts or battery assembling force of the breath is excessive。
Alarm module 112 can be buzzer or light emitting diode (LED), when the deformation quantity of casing 102 is more than a Second Threshold, alarm module 112, in order to produce an information warning, is used electronic installation 100 described in prompting user and is in abnormal external force pressure。
In certain embodiments, in casing 102, the deformation quantity of diverse location corresponds to different first thresholds and Second Threshold, it is notable that first threshold is typically smaller than Second Threshold。
For completely illustrating that the entire flow of external force detected by electronic installation 100, reference Fig. 4, Fig. 4 is the flow chart of the external force method for detecting 400 of the electronic installation represented by this case one embodiment in the lump。
When step S402, control module 106 and detect the resistance value of strain gauge 104。
When step S404, control module 106 and determine corresponding to the deformation quantity of position in the casing 102 of strain gauge 104 according to the variable quantity of resistance value and the strain gauge coefficient of strain gauge 104。
When step S406, control module 106 relatively described deformation quantity and corresponding first threshold。When deformation quantity is less than first threshold, external force method for detecting 400 returns to step S402；On the other hand, when deformation quantity is more than first threshold, external force method for detecting 400 enters step S408。
When step S408, control module 106 and record deformation quantity and corresponding to the time point of deformation quantity in storage module 110。
When step S410, control module 106 relatively described deformation quantity and corresponding Second Threshold。When deformation quantity is less than Second Threshold, external force method for detecting 400 returns to step S402；On the other hand, when deformation quantity is more than Second Threshold, external force method for detecting 400 enters step S410。
When step S412, alarm module 112 produces information warning, reminds the user that described electronic installation 100 is in the compressing of abnormal external force。
In sum, this case provides electronic installation 100 and external force method for detecting 400 thereof can allow user learn whether electronic installation 100 is subject to impact or the compressing of abnormal external force。
Although this case is disclosed above with embodiment; so it is not limited to this case, any has the knack of this those skilled in the art, without departing from the spirit and scope of the present invention; when being used for a variety of modifications and variations, therefore protection scope of the present invention is when being as the criterion depending on the defined person of appended claims。
Claims (10)
1. an electronic installation, it is characterised in that comprise:
One casing；
One first strain gauge, comprises:
One first substrate, the side of this first substrate is connected to the side of this casing；And
One first metal sensitive grid, is arranged at the opposite side of this first substrate；And
One controls module, and in order to detect one first resistance value of this first metal sensitive grid, and one first variable quantity according to this first resistance value determines to be connected to one first deformation quantity of this casing of this first strain gauge。
2. electronic installation as claimed in claim 1, it is characterized in that, this first strain gauge has one first strain gauge coefficient, and this control module more determines this first deformation quantity of this casing in order to this first variable quantity according to this first resistance value and this first strain gauge coefficient。
3. electronic installation as claimed in claim 1, it is characterised in that this metal sensitive grid comprises one first end and one second end, and this control module more comprises:
One first resistance；
One second resistance, one first end of this second resistance is electrically connected at one first end of this first resistance, and one second end of this second resistance is electrically connected at this first end of this metal sensitive grid；
One galvanometer, this galvanometer is electrically connected between one second end of this first resistance and this second end of this second resistance；And
One the 3rd resistance, one first end of the 3rd resistance is electrically connected at this second end of this first resistance, and one second end of the 3rd resistance is electrically connected at this second end of this metal sensitive grid。
4. electronic installation as claimed in claim 1, it is characterised in that this electronic installation more comprises:
One second strain gauge, comprises:
One second substrate, this second substrate and this first substrate are connected to the same side of this casing；And
One second metal sensitive grid, this second metal sensitive grid is arranged at the opposite side of this second substrate；
Wherein, this control module is more in order to detect one second resistance value of this second metal sensitive grid, and one second variable quantity according to this second resistance value determines to be connected to one second deformation quantity of this casing of this second strain gauge, wherein, this first deformation quantity and this second deformation quantity correspond to the diverse location of this casing。
5. electronic installation as claimed in claim 1, it is characterised in that more comprise:
One storage module, is electrically coupled to this control module, and wherein, when this first deformation quantity is more than a first threshold, this control module is in order to record this first deformation quantity and corresponding to a time point of this first deformation quantity in this storage module。
6. electronic installation as claimed in claim 1, it is characterised in that more comprise:
One alarm module, is electrically coupled to this control module, and when this first deformation quantity is more than a Second Threshold, this alarm module is in order to produce an information warning。
7. electronic installation as claimed in claim 1, it is characterised in that more comprise:
One uninterrupted power supply module, wherein, when this electronic installation is for shutdown, this uninterrupted power supply module is in order to provide a power supply to this control module。
8. the external force method for detecting of an electronic installation, it is characterised in that suitable in an electronic installation, this electronic installation comprises a casing and is connected to a strain gauge of this casing, and wherein, this external force method for detecting comprises:
Detect a resistance value of this strain gauge；And
A variable quantity according to this resistance value determines to be connected to a deformation quantity of this casing of this strain gauge。
9. the external force method for detecting of electronic installation as claimed in claim 8, it is characterised in that this strain gauge has a strain gauge coefficient, determines that according to this variable quantity of this resistance value the step of this deformation quantity of this casing more comprises:
This variable quantity according to this resistance value and this strain gauge coefficient of this strain gauge determine this deformation quantity of this casing。
10. the external force method for detecting of electronic installation as claimed in claim 8, it is characterised in that more comprise:
When this deformation quantity is more than a first threshold, record this deformation quantity and the time point corresponding to this deformation quantity；And
When this deformation quantity is more than a Second Threshold, produce an information warning。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709803.4A CN105698980A (en) | 2014-11-28 | 2014-11-28 | Electronic device and external force detecting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709803.4A CN105698980A (en) | 2014-11-28 | 2014-11-28 | Electronic device and external force detecting method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105698980A true CN105698980A (en) | 2016-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410709803.4A Pending CN105698980A (en) | 2014-11-28 | 2014-11-28 | Electronic device and external force detecting method thereof |
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| Country | Link |
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| CN (1) | CN105698980A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108073252A (en) * | 2016-11-18 | 2018-05-25 | 台达电子工业股份有限公司 | Fan assembly and apply its electronic device |
| WO2022170542A1 (en) * | 2021-02-10 | 2022-08-18 | Goertek Inc. | Apparatus for force sensing and electronic device |
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| CN108073252A (en) * | 2016-11-18 | 2018-05-25 | 台达电子工业股份有限公司 | Fan assembly and apply its electronic device |
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| WO2022170542A1 (en) * | 2021-02-10 | 2022-08-18 | Goertek Inc. | Apparatus for force sensing and electronic device |
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Application publication date: 20160622 |