CN105224132A - A kind of calibration steps of pressure transducer and device - Google Patents
A kind of calibration steps of pressure transducer and device Download PDFInfo
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- CN105224132A CN105224132A CN201510649978.5A CN201510649978A CN105224132A CN 105224132 A CN105224132 A CN 105224132A CN 201510649978 A CN201510649978 A CN 201510649978A CN 105224132 A CN105224132 A CN 105224132A
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Abstract
The embodiment of the invention discloses a kind of calibration steps and device of pressure transducer, the method comprises by first force value of pressure transducer detection for the pressing operation of terminal screen, calibrate to obtain the second force value to the first force value according to predetermined target alignment parameter, and using the second force value as the output pressure value of pressure transducer for pressing operation.Visible, implementing the embodiment of the present invention can calibrate the force value that pressure transducer detects according to predetermined calibration parameter automatically, without the need to by extraneous assisted calibration instrument, simplifies calibration flow process, improves the experience of user.
Description
Technical field
The present invention relates to electronic technology field, be specifically related to a kind of calibration steps and device of pressure transducer.
Background technology
Along with the fast development of electronic technology, increasing mobile terminal is provided with pressure transducer, mobile terminal can detect the operational order of user's input by pressure transducer, namely mobile terminal can detect the pressing operation of user and the force value of this pressing operation by pressure transducer, then determines according to force value and the corresponding relation of operational order the operational order that the force value of this pressing operation is corresponding.Visible, the force value of pressing operation seems particularly important to calibrate that pressure transducer is detected accurately to pressure transducer.
Current, the calibration steps of pressure transducer is mainly calibrated pressure transducer by assisted calibration instrument, as the pressure sensor calibrating apparatus by being made up of tracheae, rain glass and data acquisition and procession assembly is calibrated pressure transducer.Visible, there is the problem of complex operation in current pressure sensor calibration method.
Summary of the invention
The embodiment of the invention discloses a kind of calibration steps and device of pressure transducer, can without the need to conveniently realizing the calibration to the force value that pressure transducer detects by assisted calibration instrument.
Embodiment of the present invention first aspect discloses a kind of calibration steps of pressure transducer, and described method comprises:
The first force value for the pressing operation of terminal screen is detected by pressure transducer;
Calibrate to obtain the second force value to described first force value according to predetermined target alignment parameter;
Described second force value is defined as the output pressure value of described pressure transducer for described pressing operation.
In the first possible implementation of embodiment of the present invention first aspect, described target alignment parameter comprises calibration factor and calibration offset;
Describedly calibrate to obtain the second force value to described first force value according to predetermined target alignment parameter, comprising:
Calculate the product of described calibration factor and described first force value;
By described product and described calibration offset and be defined as the second force value.
In conjunction with the first possible implementation of embodiment of the present invention first aspect, in the implementation that the second of embodiment of the present invention first aspect is possible, described detect the first force value for the pressing operation of terminal screen by pressure transducer after, described according to predetermined target alignment parameter described first force value calibrated to obtain the second force value before, described method also comprises:
Determine the target pressing position point of described pressing operation in described terminal screen;
From the calibration parameter that pressing position point is corresponding with obtaining described target pressing position point the corresponding relation of calibration parameter, and calibration parameter corresponding for described target pressing position point is defined as target alignment parameter.
In conjunction with the implementation that the second of embodiment of the present invention first aspect is possible, in the third possible implementation of embodiment of the present invention first aspect, before the described calibration parameter corresponding with obtaining described target pressing position point the corresponding relation of calibration parameter from pressing position point, described method also comprises:
Four force value of at least four pressing positions o'clock under the test pressing operation of the 3rd force value is detected in described terminal screen by described pressure transducer;
Six force value of each pressing position o'clock under the test pressing operation of the 5th force value at least four pressing position points described in being detected by described pressure transducer;
The ratio of described 3rd force value and the first difference of described 5th force value and the second difference of described 4th force value of each described pressing position point and described 6th force value of this pressing position point is defined as the calibration factor of this pressing position point;
The ratio of each 3rd difference of described pressing position point and the 4th difference of this pressing position point is defined as the calibration offset of this pressing position point, wherein, 3rd difference of each described pressing position point equals the difference of the product of the product of described 4th force value of described 5th force value and this pressing position point and described 6th force value of described 3rd force value and this pressing position point, and the 4th difference of each described pressing position point equals the difference of described 4th force value of this pressing position point and described 6th force value of this pressing position point;
According to each calibration factor of described pressing position point and the calibration offset of this pressing position point, determine the corresponding relation of pressing position point and calibration parameter.
In conjunction with the third possible implementation of embodiment of the present invention first aspect, in the 4th kind of possible implementation of embodiment of the present invention first aspect, the test pressing operation of described 3rd force value and the test pressing operation of described 5th force value are applied on described terminal screen by plane silica gel by normal pressure controller.
In conjunction with embodiment of the present invention first aspect, in the 5th kind of possible implementation of embodiment of the present invention first aspect, described detect the first force value for the pressing operation of terminal screen by pressure transducer after, described according to predetermined target alignment parameter described first force value calibrated to obtain the second force value before, described method also comprises:
Judge whether described terminal screen is in horizontality;
When described terminal screen is in described horizontality, perform the described operation calibrating to obtain the second force value according to predetermined target alignment parameter to described first force value.
Embodiment of the present invention second aspect discloses a kind of calibrating installation of pressure transducer, and described device comprises detection module, calibration module and the first determination module, wherein:
Described detection module, for detecting the first force value for the pressing operation of terminal screen by pressure transducer;
Described calibration module, for calibrating to obtain the second force value to described first force value according to predetermined target alignment parameter;
Described first determination module, for being defined as the output pressure value of described pressure transducer for described pressing operation by described second force value.
In the first possible implementation of embodiment of the present invention second aspect, described target alignment parameter comprises calibration factor and calibration offset;
Described calibration module comprises calculating sub module and determines submodule, wherein:
Described calculating sub module, for calculating the product of described calibration factor and described first force value;
Describedly determine submodule, for by described product and described calibration offset and be defined as described second force value.
In conjunction with the first possible implementation of embodiment of the present invention second aspect, in the implementation that the second of embodiment of the present invention second aspect is possible, described device also comprises the second determination module and acquisition module, wherein:
Described second determination module, for perform at described detection module described detect for the first force value of the pressing operation of terminal screen operation by pressure transducer after and described calibration module perform described calibrate to obtain the operation of the second force value to described first force value according to predetermined target alignment parameter before, determine the target pressing position point of described pressing operation in described terminal screen;
Described acquisition module, for from the pressing position point calibration parameter corresponding with obtaining described target pressing position point in the corresponding relation of calibration parameter;
Described first determination module, also for calibration parameter corresponding for described target pressing position point is defined as described target alignment parameter.
In conjunction with the implementation that the second of embodiment of the present invention second aspect is possible, in the third possible implementation of embodiment of the present invention second aspect, described detection module, also for before the operation of calibration parameter corresponding with obtaining described target pressing position point the corresponding relation of calibration parameter from pressing position point described in described acquiring unit execution, four force value of at least four pressing positions o'clock under the test pressing operation of the 3rd force value is detected in described terminal screen by described pressure transducer, and six force value of each pressing position o'clock under the test pressing operation of the 5th force value at least four pressing position points described in being detected by described pressure transducer,
Described first determining unit, the calibration factor of this pressing position point is also defined as the ratio of the second difference by the first difference of described 3rd force value and described 5th force value and described 4th force value of each described pressing position point and described 6th force value of this pressing position point, and the ratio of each 3rd difference of described pressing position point and the 4th difference of this pressing position point is defined as the calibration offset of this pressing position point, and according to each calibration factor of described pressing position point and the calibration offset of this pressing position point, determine the corresponding relation of pressing position point and calibration parameter, wherein, 3rd difference of each described pressing position point equals the difference of the product of the product of described 4th force value of described 5th force value and this pressing position point and described 6th force value of described 3rd force value and this pressing position point, 4th difference of each described pressing position point equals the difference of described 4th force value of this pressing position point and described 6th force value of this pressing position point.
In conjunction with the third possible implementation of embodiment of the present invention second aspect, in the 4th kind of possible implementation of embodiment of the present invention second aspect, the test pressing operation of described 3rd force value and the test pressing operation of described 5th force value are applied on described terminal screen by plane silica gel by normal pressure controller.
In conjunction with embodiment of the present invention second aspect, in the 5th kind of possible implementation of embodiment of the present invention second aspect, described device also comprises judge module, wherein:
Described judge module, for perform at described detection module described detect for the first force value of the pressing operation of terminal screen operation by pressure transducer after and described calibration module perform described calibrate to obtain the operation of the second force value to described first force value according to predetermined target alignment parameter before, judge whether described terminal screen is in horizontality, when judged result is for being, trigger described calibration module and perform the described operation calibrating to obtain the second force value according to predetermined target alignment parameter to described first force value.
In the embodiment of the present invention, the first force value for the pressing operation of terminal screen is detected by pressure transducer, calibrate to obtain the second force value to the first force value according to predetermined target alignment parameter, and using the second force value as the output pressure value of pressure transducer for pressing operation.Visible, implementing the embodiment of the present invention can calibrate the force value that pressure transducer detects according to predetermined calibration parameter automatically, without the need to by extraneous assisted calibration instrument, simplifies calibration flow process, improves the experience of user.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic flow sheet of the calibration steps of a kind of pressure transducer disclosed in the embodiment of the present invention;
Fig. 2 is the schematic flow sheet of the calibration steps of another kind of pressure transducer disclosed in the embodiment of the present invention;
Fig. 3 is the structural representation of the calibrating installation of a kind of pressure transducer disclosed in the embodiment of the present invention;
Fig. 4 is the structural representation of the calibrating installation of another kind of pressure transducer disclosed in the embodiment of the present invention;
Fig. 5 is the structural representation of the calibrating installation of the embodiment of the present invention another pressure transducer disclosed;
Fig. 6 is the structural representation of the calibrating installation of the embodiment of the present invention another pressure transducer disclosed.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of calibration steps and device of pressure transducer, can automatically calibrate the force value that pressure transducer detects according to predetermined calibration parameter, without the need to by extraneous assisted calibration instrument, simplify calibration flow process, improve the experience of user.Below be described in detail respectively.
Refer to Fig. 1, Fig. 1 is the schematic flow sheet of the calibration steps of a kind of pressure transducer disclosed in the embodiment of the present invention.Wherein, method shown in Fig. 1 can be applied to smart mobile phone (as Android phone, iOS mobile phone etc.), panel computer, palm PC and mobile internet device (MobileInternetDevices, MID), PAD etc. and be provided with in the terminal of pressure transducer.As shown in Figure 1, the calibration steps of this pressure transducer can comprise the following steps:
S101, to be detected for the first force value of the pressing operation of terminal screen by pressure transducer.
In the embodiment of the present invention, first force value of the pressing operation for terminal screen detected by pressure transducer is more than or equal to preset pressure value, namely only have when the first force value of the pressing operation for terminal screen is more than or equal to preset pressure value, pressing operation can be detected by pressure transducer, and then detect the first force value of pressing operation.
S102, calibrate to obtain the second force value to above-mentioned first force value according to predetermined target alignment parameter.
In the embodiment of the present invention, target alignment parameter can be the calibration parameter of artificial setting, and also can be the calibration parameter analyzed according to corresponding test pressing operation, the embodiment of the present invention limit.
S103, above-mentioned second force value is defined as the output pressure value of pressure transducer for above-mentioned pressing operation.
In the embodiment of the present invention, above-mentioned second force value is defined as pressure transducer and achieves calibration to the first force value that pressure transducer detects for the output pressure value of above-mentioned pressing operation, and then terminal can be made operational order corresponding for the second force value to be defined as operational order corresponding to above-mentioned pressing operation and to perform, calibration flow process is simple, improves the experience of user.
As the optional embodiment of one, above-mentioned target alignment parameter can comprise calibration factor (as 0.9 or 1.1 etc.) and/or calibration offset (as 0.1N or 0.2N etc.), and when above-mentioned target alignment parameter comprises calibration factor, calibrating to obtain the second force value according to predetermined target alignment parameter to above-mentioned first force value can comprise:
Calculate the product of calibration factor and above-mentioned first force value, and this product is defined as above-mentioned second force value.
When above-mentioned target alignment parameter comprises calibration offset, calibrating to obtain the second force value according to predetermined target alignment parameter to above-mentioned first force value can comprise:
Calculate above-mentioned first force value and target alignment parameter and, and result of calculation is defined as above-mentioned second force value.
When above-mentioned target alignment parameter comprises calibration factor and calibration offset, calibrating to obtain the second force value according to predetermined target alignment parameter to above-mentioned first force value can comprise:
Calculate the product of calibration factor and above-mentioned first force value, and by the product calculated and calibration offset be defined as above-mentioned second force value; Or
Calculate above-mentioned first force value and calibration offset and, and by calculate and be defined as above-mentioned second force value with the product of calibration factor.
In this optional embodiment, above-mentioned target alignment parameter is for representing the relation between the actual force value that detects of pressure transducer and the actual pressure value of pressing operation, can make like this pressure transducer for pressing operation output pressure value as much as possible close to or equal the actual pressure value (i.e. theoretical pressure value) of pressing operation, as linear relationship n
actual=k*x
detect+ b, wherein, x
detectthe force value of the pressing operation detected for pressure transducer is actual, n
actualfor pressure transducer is for the output pressure value of this pressing operation, k is calibration factor and b is calibration offset, and for example parabolic relation etc., and the embodiment of the present invention is not construed as limiting.For example, suppose that the pass between the force value of the actual pressing operation detected of pressure transducer and the actual pressure value of pressing operation is linear relationship, the force value of the actual pressing operation detected of pressure transducer is 4N, calibration factor k is 1 and calibration offset b is 1N, then the force value that pressure transducer finally exports is (4*1+1) N.
As the optional embodiment of another kind, after the step S101 that is finished, and before execution step S102, following operation can also be performed:
Judge whether above-mentioned terminal screen is in horizontality, when above-mentioned terminal screen is in horizontality, triggering execution is above-mentioned calibrates to above-mentioned first force value the operation obtaining the second force value according to predetermined target alignment parameter.The degree of accuracy of the first force value of the pressing operation that pressure transducer detects can not only be improved like this, the maloperation of user can be prevented again.
As another optional embodiment, after the step S101 that is finished, and before execution step S102, following operation can also be performed:
Judge whether above-mentioned terminal screen is in screen lock state, when above-mentioned terminal screen is not in screen lock state, judge whether above-mentioned terminal screen is in horizontality, when above-mentioned terminal screen is in horizontality, triggering execution is above-mentioned calibrates to above-mentioned first force value the operation obtaining the second force value according to predetermined target alignment parameter.The maloperation of user can be prevented like this, and then reduce the kwh loss caused because of the maloperation triggering corresponding operational order of execution of user, improve the experience of user.
It should be noted that, calibration steps disclosed in the embodiment of the present invention also can be applied to and be provided with in the terminal of pressure membrane, to realize the calibration of the force value to the pressing operation that pressure membrane detects.
In the embodiment of the present invention, the first force value for the pressing operation of terminal screen is detected by pressure transducer, calibrate to obtain the second force value to the first force value according to predetermined target alignment parameter, and using the second force value as the output pressure value of pressure transducer for pressing operation.Visible, implementing the embodiment of the present invention can calibrate the force value that pressure transducer detects according to predetermined calibration parameter automatically, without the need to by extraneous assisted calibration instrument, simplifies calibration flow process, improves the experience of user.
Refer to Fig. 2, Fig. 2 is the schematic flow sheet of the calibration steps of another kind of pressure transducer disclosed in the embodiment of the present invention.Wherein, method shown in Fig. 2 can be applied to smart mobile phone (as Android phone, iOS mobile phone etc.), panel computer, palm PC and mobile internet device (MobileInternetDevices, MID), PAD etc. and be provided with in the terminal of pressure transducer.As shown in Figure 2, the calibration steps of this pressure transducer can comprise the following steps:
S201, to be detected for the first force value of the pressing operation of terminal screen by pressure transducer.
In the embodiment of the present invention, first force value of the pressing operation for terminal screen detected by pressure transducer is more than or equal to preset pressure value, namely only have when the first force value of the pressing operation for terminal screen is more than or equal to preset pressure value, pressing operation can be detected by pressure transducer, and then detect the first force value of pressing operation.
S202, determine the target pressing position point of above-mentioned pressing operation in terminal screen.
S203, the calibration parameter corresponding with obtaining above-mentioned target pressing position point the corresponding relation of calibration parameter from pressing position point.
In the embodiment of the present invention, the calibration parameter that different pressing position point is corresponding different, can realize like this to the above-mentioned differentiation of the first force value and the calibration of precision.
S204, calibration parameter corresponding for above-mentioned target pressing position point is defined as target alignment parameter.
In the embodiment of the present invention, this target alignment parameter comprises calibration factor and calibration offset.
S205, calibrate to obtain the second force value to above-mentioned first force value according to above-mentioned target alignment parameter.
S206, above-mentioned second force value is defined as the output pressure value of pressure transducer for above-mentioned pressing operation.
In the embodiment of the present invention, above-mentioned second force value is defined as pressure transducer and achieves calibration to the first force value that pressure transducer detects for the output pressure value of above-mentioned pressing operation, and then terminal can be made operational order corresponding for the second force value to be defined as operational order corresponding to above-mentioned pressing operation and to perform, calibration flow process is simple, improves the experience of user.
As the optional embodiment of one, calibrating to obtain the second force value according to predetermined target alignment parameter to above-mentioned first force value can comprise:
Calculate the product of calibration factor and above-mentioned first force value, and by the product calculated and calibration offset be defined as above-mentioned second force value; Or
Calculate above-mentioned first force value and calibration offset and, and by calculate and be defined as above-mentioned second force value with the product of calibration factor.
As the optional embodiment of another kind, before execution step S201, following operation can also be performed:
Four force value of at least four pressing positions o'clock under the test pressing operation of the 3rd force value is detected in above-mentioned terminal screen by pressure transducer;
The 6th force value o'clock under the test pressing operation of the 5th force value of each pressing position at least four pressing position points is detected by pressure transducer;
The ratio of the second difference of the 6th force value of the 3rd force value and the first difference of the 5th force value and the 4th force value of each pressing position point and this pressing position point is defined as the calibration factor of this pressing position point;
The ratio of the 3rd difference of each pressing position point and the 4th difference of this pressing position point is defined as the calibration offset of this pressing position point, wherein, 3rd difference of each pressing position point equals the difference of the product of the product of the 4th force value of the 5th force value and this pressing position point and the 6th force value of the 3rd force value and this pressing position point, and the 4th difference of each pressing position point equals the difference of the 4th force value of this pressing position point and the 6th force value of this pressing position point;
According to the calibration factor of each pressing position point and the calibration offset of this pressing position point, determine the corresponding relation of pressing position point and calibration parameter.
In the optional embodiment of this another kind, at least four pressing position points are determined in advance from terminal screen, as being arranged in the pressing position point of four drift angles of terminal screen and being positioned at the pressing position point etc. of center of terminal screen, and for example first terminal screen is evenly divided into predetermined number screen area and using the center of each screen area as at least four the pressing position points determined, wherein, predetermined number be more than or equal to 4 even number, the embodiment of the present invention does not limit.
Further alternative, the test pressing operation of above-mentioned 3rd force value and the test pressing operation of above-mentioned 5th force value can be applied on terminal screen by plane silica gel by normal pressure controller.
In actual alignment operation, the terminal being provided with pressure transducer can be placed in a groove of fitting completely with terminal, like this can either fixed terminal, terminal screen can be kept again to be in horizontality, then one and the equirotal plane silica gel of terminal screen are laid on terminal screen, and apply the test pressing operation of the 3rd force value and the test pressing operation of the 5th force value by normal pressure tester to terminal screen, the calibration parameter for representing the relation between the force value of the pressing operation that pressure transducer detects and the actual pressure value of test pressing operation of each pressing position point is determined according at least four pressing positions o'clock the 4th force value under the test pressing operation of the 3rd force value detected by pressure transducer and the 6th force value under the test pressing operation of the 5th force value, and the calibration parameter of each pressing position point is stored, directly calibrate according to the force value of calibration parameter to the pressing operation of this pressing position point of each pressing position point so that follow-up.
As another optional embodiment, after the S201 that is finished, and before execution step S202, following operation can also be performed:
Judge whether above-mentioned terminal screen is in horizontality, when above-mentioned terminal screen is in horizontality, triggers and perform step S202; Or
Judge whether above-mentioned terminal screen is in screen lock state, when above-mentioned terminal screen is not in screen lock state, judge whether above-mentioned terminal screen is in horizontality, when above-mentioned terminal screen is in horizontality, triggers and perform step S202.
It should be noted that, calibration steps disclosed in the embodiment of the present invention also can be applied to and be provided with in the terminal of pressure membrane, to realize the calibration of the force value to the pressing operation that pressure membrane detects.
Implement the embodiment of the present invention can automatically calibrate the force value that pressure transducer detects according to predetermined calibration parameter, without the need to by extraneous assisted calibration instrument, simplify calibration flow process, improve the experience of user.
Refer to Fig. 3, Fig. 3 is the structural representation of the calibrating installation of a kind of pressure transducer disclosed in the embodiment of the present invention.Wherein, the calibrating installation of the pressure transducer shown in Fig. 3 can be arranged on smart mobile phone (as Android phone, iOS mobile phone etc.), panel computer, palm PC and mobile internet device (MobileInternetDevices, MID), PAD etc. and be provided with in the terminal of pressure transducer.As shown in Figure 3, the calibrating installation of this pressure transducer can comprise detection module 301, calibration module 302 and the first determination module 303, wherein:
Detection module 301 is for detecting the first force value for the pressing operation of terminal screen by pressure transducer.
Calibration module 302 is for calibrating to obtain the second force value according to first force value of predetermined target alignment parameter to the above-mentioned pressing operation that detection module 301 detects.
First determination module 303 is defined as the output pressure value of pressure transducer for above-mentioned pressing operation for calibration module 302 is calibrated the second force value obtained.
As the optional embodiment of one, above-mentioned target alignment parameter can comprise calibration factor and calibration offset, and calibration module 302 can comprise calculating sub module 3021 and determine submodule 3022, now, the structure of the calibrating installation of this pressure transducer can as shown in Figure 4, and Fig. 4 is the structural representation of the calibrating installation of another kind of pressure transducer disclosed in the embodiment of the present invention.Wherein:
Calculating sub module 3021 for calculating the product of above-mentioned calibration factor and above-mentioned first force value, and calculate this product and above-mentioned calibration offset and;
Determine submodule 3022 for product that calculating sub module 3021 is calculated and above-mentioned calibration offset and be defined as above-mentioned second force value.
In this optional embodiment, further alternative, the calibrating installation of this pressure transducer can also comprise the second determination module 304 and acquisition module 305, now, the structure of the calibrating installation of this pressure transducer can as shown in Figure 5, and Fig. 5 is the structural representation of the calibrating installation of the embodiment of the present invention another pressure transducer disclosed.Wherein:
Second determination module 304 is for before calibration module 302 calibrates to obtain the second force value according to predetermined target alignment parameter to the first force value, determining the target pressing position point of above-mentioned pressing operation in terminal screen that detection module 301 detects after detecting the first force value for the pressing operation of terminal screen at detection module 301 by pressure transducer.
Acquisition module 305 is for from the pressing position point calibration parameter corresponding with obtaining target pressing position point that the second determination module 304 determines in the corresponding relation of calibration parameter.
The calibration parameter that the target pressing position point that first determination module 303 can also be used for acquisition module 305 to get is corresponding is defined as above-mentioned target alignment parameter, calibrates with first force value of target alignment parameter to the pressing operation that detection module 301 detects making calibration module 302 determine according to the first determination module 303.
In this optional embodiment, further alternative again, detection module 301 can also be used for before the calibration parameter that acquiring unit 305 is corresponding with obtaining above-mentioned target pressing position point the corresponding relation of calibration parameter from pressing position point, by four force value of at least four pressing positions in pressure transducer sense terminals screen o'clock under the test pressing operation of the 3rd force value, and detect the 6th force value o'clock under the test pressing operation of the 5th force value of each pressing position at least four pressing position points by pressure transducer.
First determining unit 303 can also be used for the calibration factor ratio of the second difference of the 6th force value of above-mentioned 3rd force value and the first difference of above-mentioned 5th force value and the 4th force value of each pressing position point and this pressing position point being defined as this pressing position point, and the ratio of the 3rd difference of each pressing position point and the 4th difference of this pressing position point is defined as the calibration offset of this pressing position point, and according to the calibration factor of each pressing position point and the calibration offset of this pressing position point, determine the corresponding relation of pressing position point and calibration parameter, wherein, 3rd difference of each pressing position point equals the difference of the product of the product of the 4th force value of the 5th force value and this pressing position point and the 6th force value of the 3rd force value and this pressing position point, 4th difference of each pressing position point equals the difference of the 4th force value of this pressing position point and the 6th force value of this pressing position point.
Optionally, the test pressing operation of above-mentioned 3rd force value and the test pressing operation of above-mentioned 5th force value can be applied on above-mentioned terminal screen by plane silica gel by normal pressure controller.
As the optional embodiment of another kind, on the architecture basics of the calibrating installation of the pressure transducer shown in Fig. 3, the calibrating installation of this pressure transducer can also comprise judge module 306, now, the structure of the calibrating installation of this pressure transducer can as shown in Figure 6, and Fig. 6 is the structural representation of the calibrating installation of the embodiment of the present invention another pressure transducer disclosed.Wherein:
Judge module 306 is for after detecting the first force value for the pressing operation of terminal screen at detection module 301 by pressure transducer and before calibration module 302 calibrates to obtain the second force value according to predefined target alignment parameter to the first force value, judge whether terminal screen is in horizontality, when the test results is yes, triggering calibration module 302 performs above-mentioned basis and pre-determines target alignment parameter calibrates to obtain the second force value operation to the first force value.
It should be noted that, above-mentioned calibrating installation also can be arranged on and be provided with in the terminal of pressure membrane, for the calibration realized the force value of the pressing operation that pressure membrane detects.
Implement the embodiment of the present invention can automatically calibrate the force value that pressure transducer detects according to predetermined calibration parameter, without the need to by extraneous assisted calibration instrument, simplify calibration flow process, improve the experience of user.
It should be noted that, in the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields in certain embodiment, there is no the part described in detail, can see the associated description of other embodiments.Secondly, those skilled in the art also should know, the embodiment described in instructions all belongs to preferred embodiment, and involved action and module and submodule might not be that the present invention is necessary.
Step in embodiment of the present invention method can be carried out order according to actual needs and be adjusted, merges and delete.
Module in embodiment of the present invention device and submodule can carry out merging, divide and deleting according to actual needs.
Module described in the embodiment of the present invention and submodule, universal integrated circuit can be passed through, such as CPU (CentralProcessingUnit, central processing unit), or realized by ASIC (ApplicationSpecificIntegratedCircuit, special IC).
One of ordinary skill in the art will appreciate that all or part of flow process realized in above-described embodiment method, that the hardware that can carry out instruction relevant by computer program has come, described program can be stored in computer read/write memory medium, this program, when performing, can comprise the flow process of the embodiment as above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-OnlyMemory, ROM) or random store-memory body (RandomAccessMemory, RAM) etc.
Above the calibration steps of a kind of pressure transducer disclosed in the embodiment of the present invention and device are described in detail, apply instantiation herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. a calibration steps for pressure transducer, is characterized in that, described method comprises:
The first force value for the pressing operation of terminal screen is detected by pressure transducer;
Calibrate to obtain the second force value to described first force value according to predetermined target alignment parameter;
Described second force value is defined as the output pressure value of described pressure transducer for described pressing operation.
2. method according to claim 1, is characterized in that, described target alignment parameter comprises calibration factor and calibration offset;
Describedly calibrate to obtain the second force value to described first force value according to predetermined target alignment parameter, comprising:
Calculate the product of described calibration factor and described first force value;
By described product and described calibration offset and be defined as the second force value.
3. method according to claim 2, it is characterized in that, described detect the first force value for the pressing operation of terminal screen by pressure transducer after, described according to predetermined target alignment parameter described first force value calibrated to obtain the second force value before, described method also comprises:
Determine the target pressing position point of described pressing operation in described terminal screen;
From the calibration parameter that pressing position point is corresponding with obtaining described target pressing position point the corresponding relation of calibration parameter, and calibration parameter corresponding for described target pressing position point is defined as target alignment parameter.
4. method according to claim 3, is characterized in that, before the described calibration parameter corresponding with obtaining described target pressing position point the corresponding relation of calibration parameter from pressing position point, described method also comprises:
Four force value of at least four pressing positions o'clock under the test pressing operation of the 3rd force value is detected in described terminal screen by described pressure transducer;
Six force value of each pressing position o'clock under the test pressing operation of the 5th force value at least four pressing position points described in being detected by described pressure transducer;
The ratio of described 3rd force value and the first difference of described 5th force value and the second difference of described 4th force value of each described pressing position point and described 6th force value of this pressing position point is defined as the calibration factor of this pressing position point;
The ratio of each 3rd difference of described pressing position point and the 4th difference of this pressing position point is defined as the calibration offset of this pressing position point, wherein, 3rd difference of each described pressing position point equals the difference of the product of the product of described 4th force value of described 5th force value and this pressing position point and described 6th force value of described 3rd force value and this pressing position point, and the 4th difference of each described pressing position point equals the difference of described 4th force value of this pressing position point and described 6th force value of this pressing position point;
According to each calibration factor of described pressing position point and the calibration offset of this pressing position point, determine the corresponding relation of pressing position point and calibration parameter.
5. method according to claim 4, is characterized in that, the test pressing operation of described 3rd force value and the test pressing operation of described 5th force value are applied on described terminal screen by plane silica gel by normal pressure controller.
6. method according to claim 1, it is characterized in that, described detect the first force value for the pressing operation of terminal screen by pressure transducer after, described according to predetermined target alignment parameter described first force value calibrated to obtain the second force value before, described method also comprises:
Judge whether described terminal screen is in horizontality;
When described terminal screen is in described horizontality, perform the described operation calibrating to obtain the second force value according to predetermined target alignment parameter to described first force value.
7. a calibrating installation for pressure transducer, is characterized in that, described device comprises detection module, calibration module and the first determination module, wherein:
Described detection module, for detecting the first force value for the pressing operation of terminal screen by pressure transducer;
Described calibration module, for calibrating to obtain the second force value to described first force value according to predetermined target alignment parameter;
Described first determination module, for being defined as the output pressure value of described pressure transducer for described pressing operation by described second force value.
8. device according to claim 7, is characterized in that, described target alignment parameter comprises calibration factor and calibration offset;
Described calibration module comprises calculating sub module and determines submodule, wherein:
Described calculating sub module, for calculating the product of described calibration factor and described first force value;
Describedly determine submodule, for by described product and described calibration offset and be defined as described second force value.
9. device according to claim 8, is characterized in that, described device also comprises the second determination module and acquisition module, wherein:
Described second determination module, for perform at described detection module described detect for the first force value of the pressing operation of terminal screen operation by pressure transducer after and described calibration module perform described calibrate to obtain the operation of the second force value to described first force value according to predetermined target alignment parameter before, determine the target pressing position point of described pressing operation in described terminal screen;
Described acquisition module, for from the pressing position point calibration parameter corresponding with obtaining described target pressing position point in the corresponding relation of calibration parameter;
Described first determination module, also for calibration parameter corresponding for described target pressing position point is defined as described target alignment parameter.
10. device according to claim 9, it is characterized in that, described detection module, also for before the operation of calibration parameter corresponding with obtaining described target pressing position point the corresponding relation of calibration parameter from pressing position point described in described acquiring unit execution, four force value of at least four pressing positions o'clock under the test pressing operation of the 3rd force value is detected in described terminal screen by described pressure transducer, and six force value of each pressing position o'clock under the test pressing operation of the 5th force value at least four pressing position points described in being detected by described pressure transducer,
Described first determining unit, the calibration factor of this pressing position point is also defined as the ratio of the second difference by the first difference of described 3rd force value and described 5th force value and described 4th force value of each described pressing position point and described 6th force value of this pressing position point, and the ratio of each 3rd difference of described pressing position point and the 4th difference of this pressing position point is defined as the calibration offset of this pressing position point, and according to each calibration factor of described pressing position point and the calibration offset of this pressing position point, determine the corresponding relation of pressing position point and calibration parameter, wherein, 3rd difference of each described pressing position point equals the difference of the product of the product of described 4th force value of described 5th force value and this pressing position point and described 6th force value of described 3rd force value and this pressing position point, 4th difference of each described pressing position point equals the difference of described 4th force value of this pressing position point and described 6th force value of this pressing position point.
11. devices according to claim 10, is characterized in that, the test pressing operation of described 3rd force value and the test pressing operation of described 5th force value are applied on described terminal screen by plane silica gel by normal pressure controller.
12. devices according to claim 7, is characterized in that, described device also comprises judge module, wherein:
Described judge module, for perform at described detection module described detect for the first force value of the pressing operation of terminal screen operation by pressure transducer after and described calibration module perform described calibrate to obtain the operation of the second force value to described first force value according to predetermined target alignment parameter before, judge whether described terminal screen is in horizontality, when judged result is for being, trigger described calibration module and perform the described operation calibrating to obtain the second force value according to predetermined target alignment parameter to described first force value.
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| CN201510649978.5A CN105224132B (en) | 2015-10-08 | 2015-10-08 | The calibration method and device of a kind of pressure sensor |
| CN201810066556.9A CN108287633B (en) | 2015-10-08 | 2015-10-08 | Calibration method and device of pressure sensor |
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Also Published As
| Publication number | Publication date |
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| CN108287633B (en) | 2021-06-01 |
| CN105224132B (en) | 2018-01-23 |
| CN108287633A (en) | 2018-07-17 |
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