CN104062326B - Environment detection method and device - Google Patents
Environment detection method and device Download PDFInfo
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- CN104062326B CN104062326B CN201310094774.0A CN201310094774A CN104062326B CN 104062326 B CN104062326 B CN 104062326B CN 201310094774 A CN201310094774 A CN 201310094774A CN 104062326 B CN104062326 B CN 104062326B
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Abstract
The invention discloses a kind of environment detection method and device, environment value influential on electronic equipment can be detected.Described environment detection method is applied to electronic equipment, this electronic equipment includes an environmental detection set, this environmental detection set includes the environment measuring plate that one first capacitance detection plate and is set to be grounded, and environment measuring plate is be arranged in parallel with the first capacitance detection plate, and methods described includes：Detect the electric capacity between the first capacitance detection plate and environment measuring plate using the first capacitance detection plate, obtain the first testing result；Judge that the first testing result, whether in the capacitance range in predetermined capacitive environmental control table, obtains a judged result, at least includes the corresponding capacitance of varying environment value in predetermined capacitive environmental control table；When described judged result shows that the first testing result is in the capacitance range in predetermined capacitive environmental control table, from predetermined capacitive environmental control table, search and the environment value corresponding to the immediate capacitance of the first testing result, and export.
Description
Technical field
The present invention relates to electronic technology field, more particularly, to a kind of environment detection method and device.
Background technology
In the prior art, have in touch screen and touch pad electronic equipment, its sensitivity is often restricted and temperature, humidity
Deng multiple reasons, higher in temperature, and air humidity more significantly under the conditions of, its sensitivity and user occur deviation.Sternly
Have impact on Consumer's Experience again.
Content of the invention
The technical problem to be solved is to provide a kind of environment detection method and device, can detect and electronics is set
Standby influential environment value.
In order to solve above-mentioned technical problem, the invention provides a kind of environment detection method, it is applied to electronic equipment, it is special
Levy and be, described electronic equipment includes an environmental detection set, described environmental detection set include one first capacitance detection plate and
One is set to the environment measuring plate being grounded, and described environment measuring plate is be arranged in parallel with described first capacitance detection plate, methods described
Including：
Detect the electric capacity between described first capacitance detection plate and environment measuring plate using described first capacitance detection plate, obtain
To the first testing result；
Judge that described first testing result, whether in the capacitance range in predetermined capacitive environmental control table, obtains a judgement
As a result, at least include the corresponding capacitance of varying environment value in described predetermined capacitive environmental control table；
When described judged result shows described first testing result in the capacitance range in predetermined capacitive environmental control table
When, from described predetermined capacitive environmental control table, search the ring corresponding to immediate capacitance with described first testing result
Border is worth, and exports.
Further, described electronic equipment also includes the second capacitance detection plate, and described second capacitance detection plate is used for detecting
Electric capacity between described second capacitance detection plate and thereon touch objects, also includes different rings in described predetermined capacitive environmental control table
Border is worth corresponding capacitive calibration value；
Methods described also includes：
Obtain the second testing result using described second capacitance detection plate detection；
From described predetermined capacitive environmental control table, search and the capacitive calibration value corresponding to described environment value；
Using described capacitive calibration value, described second testing result is corrected.
Further, described using described capacitive calibration value, described second testing result is corrected, including：Described
Two testing results deduct described capacitive calibration value after value as correction after the second testing result.
Further, described environment measuring plate is conductive mesh structure, and described environment value is humidity value.
Further, described environment measuring plate is temperature-sensitive material, and described environment value is temperature value.
In order to solve above-mentioned technical problem, present invention also offers a kind of environmental detection set, it is applied to electronic equipment, its
Be characterised by, described environmental detection set include one first capacitance detection plate, one be set to be grounded environment measuring plate and an inspection
Survey chip, wherein said environment measuring plate is be arranged in parallel with described first capacitance detection plate, described detection chip includes judging list
Unit and environment value output unit, wherein：
Described first capacitance detection plate, for detecting the electric capacity between described first capacitance detection plate and environment measuring plate,
Obtain the first testing result；
Described judging unit, for judging electric capacity whether in predetermined capacitive environmental control table for described first testing result
In the range of, obtain a judged result, in described predetermined capacitive environmental control table, at least include the corresponding capacitance of varying environment value；
Described environment value output unit, for showing described first testing result in predetermined capacitive ring in described judged result
When in the capacitance range in the synopsis of border, from described predetermined capacitive environmental control table, search with described first testing result
Environment value corresponding to close capacitance, and export.
Further, described detection chip also includes correcting unit, also includes not in described predetermined capacitive environmental control table
With environment value corresponding capacitive calibration value；
Described correction unit, for, from described predetermined capacitive environmental control table, searching described environment value output unit defeated
Capacitive calibration value corresponding to the environment value going out, is corrected to described second testing result using described capacitive calibration value, institute
State the second capacitance detection plate that the second testing result is described electronic equipment to detect described second capacitance detection plate and touch thereon
The testing result that electric capacity between thing obtains.
Further, described correction unit is corrected to described second testing result using described capacitive calibration value, bag
Include：Described correction described second testing result of unit deducts the value after described capacitive calibration value as the second detection after correction
Result.
Further, described environment measuring plate is conductive mesh structure, and described environment value is humidity value.
Further, described environment measuring plate is temperature-sensitive material, and described environment value is temperature value.
Compared with prior art, reflect environment value using capacitance, realize simple.Can also realize additionally by the method
Correction to capacitance signal in capacitive touch screen or touch pad, reduces the shadow to capacitive touch screen or touch pad for the external environment
Ring, improve the adaptability to environment for the electronic equipment.
Other features and advantages of the present invention will illustrate in the following description, and, partly become from description
Obtain it is clear that or being understood by implementing the present invention.The purpose of the present invention and other advantages can be by description, rights
In claim and accompanying drawing, specifically noted structure is realizing and to obtain.
Brief description
Accompanying drawing is used for providing technical solution of the present invention is further understood, and constitutes a part for description, with this
The embodiment of application is used for explaining technical scheme together, does not constitute the restriction to technical solution of the present invention.
Fig. 1 is the embodiment of the present invention 1 environment detection method flow chart；
Fig. 2 is the embodiment of the present invention 1 environmental detection set structural representation；
Fig. 3 is the embodiment of the present invention 2 environment detection method flow chart；
Fig. 4 is the embodiment of the present invention 2 environmental detection set structural representation；
Fig. 5 a-5d is the schematic diagram that the embodiment of the present invention 3 environment measuring plate is conductive mesh structure
Fig. 6 a-6c is the schematic diagram that the embodiment of the present invention 4 environment measuring plate is temperature-sensitive material.
Can be in the computer system of such as one group of computer executable instructions in the step that the flow process of accompanying drawing illustrates
Execution.And although showing logical order in flow charts, but in some cases, can be with suitable different from herein
The shown or described step of sequence execution.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that in the case of not conflicting, in embodiment in the application and embodiment
Feature can mutual combination in any.
Embodiment 1
The present embodiment describes a kind of environment detection method being applied to electronic equipment, and this electronic equipment includes an environment measuring
Device, this environmental detection set includes the environment measuring plate that one first capacitance detection plate and is set to be grounded, described environment inspection
Drafting board is be arranged in parallel with described first capacitance detection plate, and Fig. 1 is the present embodiment environment detection method flow chart, as illustrated, bag
Include following steps：
Step 101, is detected between described first capacitance detection plate and environment measuring plate using described first capacitance detection plate
Electric capacity, obtain the first testing result；
Step 102, judges that described first testing result, whether in the capacitance range in predetermined capacitive environmental control table, obtains
To a judged result, in described predetermined capacitive environmental control table, at least include the corresponding capacitance of varying environment value；
Step 103, when described judged result shows electricity in predetermined capacitive environmental control table for described first testing result
When in the range of appearance, from described predetermined capacitive environmental control table, search the immediate capacitance institute with described first testing result
Corresponding environment value, and export.
Environment value in above-mentioned predetermined capacitive environmental control table and capacitance can be obtained by emulation.For example in laboratory ring
Under border, test varying environment is worth corresponding capacitance, and in capacitive environment synopsis, the corresponding capacitance of any environment value can be many
Meansigma methodss or a capacitance range that secondary measurement obtains.In above-mentioned steps 102, judge the first testing result whether default
In capacitance range in capacitive environment synopsis, the capacitance range in predetermined capacitive environmental control table described herein refers to electric capacity ring
The capacitance range that in the synopsis of border, all capacitances are constituted.A kind of example of predetermined capacitive environmental control table is as shown in table 1.
Table 1
| Environment value | Capacitance |
| M1 | C1 |
| M2 | C2-C3 |
| …… | …… |
By the present embodiment method, reflect environment value using capacitance, be capable of detecting when the influential environment of electronic equipment
Value, realizes simple.
Realize the environmental detection set of said method as shown in Fig. 2 this device is applied to electronic equipment, this environment measuring fills
Put environment measuring plate 202 and the detection chip 203 being set to ground connection including one first capacitance detection plate 201, wherein environment
Detection plate is be arranged in parallel with the first capacitance detection plate, and described detection chip includes judging unit 2031 and environment value output unit
2032, wherein：
Described first capacitance detection plate 201, for detecting between described first capacitance detection plate and environment measuring plate 202
Electric capacity, obtains the first testing result；
Whether described judging unit 2031, for judging described first testing result in predetermined capacitive environmental control table
In capacitance range, obtain a judged result, in described predetermined capacitive environmental control table, at least include the corresponding electricity of varying environment value
Capacitance；
Described environment value output unit 2032, for showing described first testing result in default electricity in described judged result
When holding in the capacitance range in environmental control table, from described predetermined capacitive environmental control table, search and described first detection knot
Environment value corresponding to really immediate capacitance, and export.
Embodiment 2
The present embodiment introduces how to realize correction using embodiment 1 method and apparatus.So-called correction refers to capacitive touch
Touch screen or touch pad obtain capacitance signal be corrected, that is, above-mentioned environmental detection set be applied to one include second electric capacity inspection
In the electronic equipment of drafting board, this second capacitance detection plate is used for detection the second capacitance detection plate and touch objects thereon（As finger）It
Between electric capacity.Because electric capacity changes, its less stable with the difference of temperature, humidity or Grounding, often produce drift
Move phenomenon, therefore current environment value is detected by the method for above-described embodiment 1, the second capacitance detection plate can be detected
Capacitance be corrected.
As shown in figure 3, comprising the following steps：
Step 301, is detected between described first capacitance detection plate and environment measuring plate using described first capacitance detection plate
Electric capacity, obtain the first testing result；
Step 302, judges that described first testing result, whether in the capacitance range in predetermined capacitive environmental control table, obtains
To a judged result, in described predetermined capacitive environmental control table, at least include the corresponding capacitance of varying environment value；
Step 303, when described judged result shows electricity in predetermined capacitive environmental control table for described first testing result
When in the range of appearance, from described predetermined capacitive environmental control table, search the immediate capacitance institute with described first testing result
Corresponding environment value simultaneously exports；
Step 304, obtains the second testing result using described second capacitance detection plate detection；
Step 305, from described predetermined capacitive environmental control table, searches and the capacitive calibration corresponding to described environment value
Value；
Step 306, is corrected to described second testing result using described capacitive calibration value.
The execution opportunity not limited to this of above-mentioned steps 304, as long as obtained the second testing result before step 306.
Above-mentioned steps 305 can also merge execution with step 303, that is, from predetermined capacitive environmental control table, searches and institute
State the environment value corresponding to the immediate capacitance of the first testing result, and described environment value corresponding capacitive calibration value.
Using capacitive calibration value, the second testing result is corrected referring in above-mentioned steps 306：Second testing result
Deduct the value after capacitive calibration value as the second testing result after correction.In addition to this kind of correcting mode, can also basis be somebody's turn to do
Relevant capacitor threshold value is heightened or reduced to corrected value, such as in order to prevent the capacitance threshold value set by false touch.
In the present embodiment, it is worth corresponding capacitance except including varying environment in above-mentioned predetermined capacitive environmental control table
Outward, also include varying environment value corresponding capacitive calibration value, as shown in table 2, record when capacitive calibration value is by current context value
Capacitance deducts the capacitance recording during basic environment value.
Table 2
| Environment value | Capacitance | Capacitive calibration value |
| M1 | C1 | C1-C0 |
| M2 | C2 | C2-C0 |
| M3 | C3 | C3-C0 |
| …… | …… | …… |
The capacitance recording during environment value based on C0 in table.
The opportunity of correct operation can every time the second testing result is corrected, or is only controlled by arranging thresholding
It is corrected when drifting about more serious.Taking arrange thresholding as a example, such as after obtaining environment value, if this environment value shows environment relatively
For severe, then read capacitive calibration value and correct operation is executed to the second testing result.This thresholding controls can also be with the second detection
It is configured based on result, such as the second testing result conforms to a predetermined condition, then it is corrected.
Realize the environmental detection set of the present embodiment method as shown in figure 4, being to detect with the difference of device in embodiment 1
Also include in chip correcting unit 2033, this correction unit 2033 is used for from described predetermined capacitive environmental control table, searches institute
State the capacitive calibration value corresponding to environment value of environment value output unit output, examined to described second using described capacitive calibration value
Survey result to be corrected, the second testing result described herein is the second capacitance detection plate detection described second of described electronic equipment
The testing result that electric capacity between capacitance detection plate and thereon touch objects obtains.
The present embodiment, by being corrected to the testing result of the second capacitance detection plate, reduces external environment to electronic equipment
Impact, improve the adaptability to environment for the electronic equipment.
Embodiment 3
In the present embodiment, with environment value as humidity value, environment measuring plate illustrates for as a example conductive mesh structure.
Fig. 5 is the exemplary plot of a kind of environment measuring plate and capacitance detection plate, wherein：Fig. 5 a is a kind of showing of capacitance detection plate
Illustration, this capacitance detection plate is a circular metal plate；Fig. 5 b is the vertical view after setting conductive mesh structure in capacitance detection plate
Figure；Fig. 5 c is the front view after setting conductive mesh structure in capacitance detection plate, and this conductive mesh structure is wire netting, in figure
It show a kind of set-up mode of wire netting；Fig. 5 d is conductive mesh structure and the capacitance detection plate signal being in moist bad border
Figure.
The inventors found that this capacitance detection plate（Capacitive sensing pad）Place in atmosphere
When, it is affected by humidity, signal can be led to convert, this characteristic can be used as the basis of Humidity Detection.In addition, it is contemplated that electric capacity inspection
Survey and easily disturbed by other factors, therefore, its structure is designed as follows：Leading of a circle ground connection is placed outside capacitance detection plate
Electric network structure, such as wire netting（Metal net）, the form not limited to this of conductive mesh structure, can be according to place electronic equipment
Structure adjusts accordingly.This conductive mesh structure can effectively by reducing, net is outer to be disturbed.And be can ensure that using network structure
Air circulation, when air humidity is big, due to close together between conductive mesh structure and capacitance detection plate, therefore capacitance detecting
Plate adheres to steam, and steam itself can be easy to affect the capacitance between this distance.Said structure pair can be adopted based on this principle
Humidity value is detected.
The distance between capacitance detection plate and conductive mesh structure not particular/special requirement, distance is nearer, and humidity is to electric capacity
Impact bigger, the detection to humidity is more sensitive.
As shown in figure 5, this conductive mesh structure setting be arranged in parallel in capacitance detection plate side and with capacitance detection plate, should
Capacitance detection plate is used for detecting capacitance between this capacitance detection plate and conductive mesh structure, and using this capacitance as first
Testing result.
Embodiment 4
In the present embodiment, with environment value as temperature value, environment measuring plate illustrates as a example being made up of temperature-sensitive material.
A kind of Fig. 6 environment measuring plate and the exemplary plot of capacitance detection plate, wherein, Fig. 6 a is capacitance detection plate under original state
With the schematic diagram of environment measuring plate, in figure ground connection for environment measuring plate；When Fig. 6 b deforms upon with temperature for environment measuring plate
A kind of exemplary plot；Another kind of exemplary plot that Fig. 6 c deforms upon with temperature for environment measuring plate.
Because temperature-sensitive material can deform upon with temperature, it is led to become the distance between with capacitance detection plate
Change, thus leading to the change of the capacitance that capacitance detection plate detects, using this principle, can be using said structure to temperature value
Detected.
Those skilled in the art should be understood that each of device that above-mentioned the embodiment of the present application provided and/or system
Each step in ingredient, and method, they can concentrate on single computing device, or is distributed in multiple calculating
On the network that device is formed.Alternatively, they can be realized with the executable program code of computing device.It is thus possible to
It is stored in being executed by computing device in storage device, or they are fabricated to each integrated circuit modules respectively,
Or the multiple modules in them or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to
Any specific hardware and software combines.
Although disclosed herein embodiment as above, described content only readily appreciates that the present invention adopts
Embodiment, is not limited to the present invention.Technical staff in any art of the present invention, is being taken off without departing from the present invention
On the premise of the spirit and scope of dew, any modification and change can be carried out in the form implemented and details, but the present invention
Scope of patent protection, still must be defined by the scope of which is defined in the appended claims.
Claims (10)
1. a kind of environment detection method, is applied to electronic equipment it is characterised in that described electronic equipment includes an environment measuring dress
Put, described environmental detection set includes the environment measuring plate that one first capacitance detection plate and is set to be grounded, described environment inspection
Drafting board is be arranged in parallel with described first capacitance detection plate, and methods described includes：
Detect the electric capacity between described first capacitance detection plate and environment measuring plate using described first capacitance detection plate, obtain the
One testing result；
Judge described first testing result whether in the capacitance range in predetermined capacitive environmental control table, obtain a judgement knot
Really, at least include the corresponding capacitance of varying environment value in described predetermined capacitive environmental control table；
When described judged result shows that described first testing result is in the capacitance range in predetermined capacitive environmental control table, from
In described predetermined capacitive environmental control table, search the environment value corresponding to immediate capacitance with described first testing result,
And export；
Described environment measuring plate is conductive mesh structure.
2. the method for claim 1 it is characterised in that：
Described electronic equipment also includes the second capacitance detection plate, and described second capacitance detection plate is used for detecting described second electric capacity inspection
Electric capacity between drafting board and thereon touch objects, also includes the corresponding electric capacity of varying environment value in described predetermined capacitive environmental control table
Corrected value；
Methods described also includes：
Obtain the second testing result using described second capacitance detection plate detection；
From described predetermined capacitive environmental control table, search and the capacitive calibration value corresponding to described environment value；
Using described capacitive calibration value, described second testing result is corrected.
3. method as claimed in claim 2 it is characterised in that：
Described using described capacitive calibration value, described second testing result is corrected, including：
Described second testing result deduct described capacitive calibration value after value as correction after the second testing result.
4. the method as described in claim 1 or 2 or 3 it is characterised in that：
Described environment value is humidity value.
5. the method as described in claim 1 or 2 or 3 it is characterised in that：
Described environment measuring plate is temperature-sensitive material, and described environment value is temperature value.
6. a kind of environmental detection set, is applied to electronic equipment it is characterised in that described environmental detection set includes one first electricity
Hold detection plate, one be set to be grounded environment measuring plate and a detection chip, wherein said environment measuring plate with described first electricity
Hold detection plate to be arranged in parallel, described detection chip includes judging unit and environment value output unit, wherein：
Described first capacitance detection plate, for detecting the electric capacity between described first capacitance detection plate and environment measuring plate, obtains
First testing result；
Described judging unit, for judging capacitance range whether in predetermined capacitive environmental control table for described first testing result
Interior, obtain a judged result, in described predetermined capacitive environmental control table, at least include the corresponding capacitance of varying environment value；
Described environment value output unit, for showing described first testing result in predetermined capacitive environment pair in described judged result
According to when in the capacitance range in table, from described predetermined capacitive environmental control table, search closest with described first testing result
The environment value corresponding to capacitance, and export；
Described environment measuring plate is conductive mesh structure.
7. environmental detection set as claimed in claim 6 it is characterised in that：
Described detection chip also includes correcting unit, also includes varying environment value corresponding in described predetermined capacitive environmental control table
Capacitive calibration value；
Described correction unit, for from described predetermined capacitive environmental control table, searching described environment value output unit output
Capacitive calibration value corresponding to environment value, is corrected to described second testing result using described capacitive calibration value, and described
Two testing results be described electronic equipment the second capacitance detection plate detect described second capacitance detection plate and touch objects thereon it
Between the testing result that obtains of electric capacity.
8. environmental detection set as claimed in claim 7 it is characterised in that：
Described correction unit is corrected to described second testing result using described capacitive calibration value, including：
Described correction described second testing result of unit deducts the value after described capacitive calibration value as the second inspection after correction
Survey result.
9. the environmental detection set as described in claim 6 or 7 or 8 it is characterised in that：
Described environment value is humidity value.
10. the environmental detection set as described in claim 6 or 7 or 8 it is characterised in that：
Described environment measuring plate is temperature-sensitive material, and described environment value is temperature value.
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| WO2016045027A1 (en) * | 2014-09-25 | 2016-03-31 | 华为技术有限公司 | Screen sensitivity adjustment method and mobile terminal |
| CN107796482B (en) * | 2016-09-05 | 2020-02-21 | 比亚迪股份有限公司 | Liquid level detection method and liquid level detection device |
| WO2019006666A1 (en) * | 2017-07-04 | 2019-01-10 | 深圳市汇顶科技股份有限公司 | Touch detection circuit, electronic device, and method for detecting environment temperature of touchscreen |
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