CN107345990B - Method and device for testing electromagnetic wave absorption ratio - Google Patents
Method and device for testing electromagnetic wave absorption ratio Download PDFInfo
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- CN107345990B CN107345990B CN201610294569.2A CN201610294569A CN107345990B CN 107345990 B CN107345990 B CN 107345990B CN 201610294569 A CN201610294569 A CN 201610294569A CN 107345990 B CN107345990 B CN 107345990B
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Abstract
The present disclosure provides an electromagnetic wave absorption ratio test method and apparatus, wherein the method includes: determining a first target test area in an area formed by preset test points, wherein the first number of the preset test points in the first target test area is less than the total number of the preset test points; testing electric field intensity values generated by the terminal at a second number of preset test points in the first target test area, wherein the second number does not exceed the first number; and taking the preset test point corresponding to the maximum value of the tested electric field strength value as a target test point, and determining the electromagnetic wave absorption ratio SAR of the terminal according to the target test point. The method and the device can accelerate the SAR speed of the test terminal and reduce the test time.
Description
Technical Field
The present disclosure relates to the field of communications, and in particular, to a method and an apparatus for testing an electromagnetic wave absorption ratio.
Background
Currently, before the terminal is shipped from factory, a Specific Absorption Rate (SAR) test needs to be performed, wherein the SAR depends on an electric field intensity value generated by the terminal. In the SAR testing process, electric field strength values generated by the terminal at a plurality of preset test points need to be tested, so that a target test point corresponding to the maximum value of the electric field strength values is determined, and the SAR is determined according to the target test point in the following process.
In the related art, in the process of testing the SAR, the electric field strength value generated by the terminal at each preset test point needs to be tested, and the test time is long.
Disclosure of Invention
In view of the above, the present disclosure provides a method and an apparatus for measuring an electromagnetic wave absorption ratio to solve the deficiencies in the related art.
According to a first aspect of the embodiments of the present disclosure, there is provided an electromagnetic wave absorption ratio test method, the method including:
determining a first target test area in an area formed by preset test points, wherein the first number of the preset test points in the first target test area is less than the total number of the preset test points;
testing electric field intensity values generated by the terminal at a second number of preset test points in the first target test area, wherein the second number does not exceed the first number;
and taking the preset test point corresponding to the maximum value of the tested electric field strength value as a target test point, and determining the electromagnetic wave absorption ratio SAR of the terminal according to the target test point.
Optionally, the determining a first target test area in an area formed by preset test points includes:
selecting a first test point in the area formed by the preset test points, wherein the first test point is the preset test point positioned at the appointed position of the area;
testing the electric field strength value generated by the terminal at the first test point;
and taking the first test point corresponding to the maximum value of the tested electric field strength value as a second test point, and determining the first target test area including the second test point.
Optionally, the designated position is a region vertex of the region.
Optionally, the determining the first target test area including the second test point includes:
and dividing the first target test area comprising the first number of the preset test points in the area by taking the second test point as an area vertex of the first target test area.
Optionally, the first number is not less than one quarter of the total number and the first number is not more than one half of the total number.
Optionally, the step of testing the electric field intensity value generated by the terminal at the second number of the preset test points in the first target test area includes:
selecting a plurality of third test points adjacent to the second test point in the first target test area;
testing the electric field strength value generated by the terminal at the third test point;
and taking the third test point corresponding to the maximum value of the electric field strength value obtained by the test as a new second test point, and returning to execute the step of selecting a plurality of third test points adjacent to the second test point in the first target test area until the maximum value of the electric field strength value is obtained by testing in the second number of preset test points.
Optionally, the determining the electromagnetic wave absorption ratio SAR of the terminal according to the target test point includes:
dividing a second target test area in the area by taking the target test point as a circle center and a preset value as a radius;
testing the maximum value of the electric field strength value generated by the terminal in the second target test area;
and calculating the SAR of the terminal according to the maximum value of the electric field strength value obtained by testing in the second target test area.
Optionally, the SAR of the terminal is calculated according to the following formula:
SAR＝бE2where E is the maximum value of the electric field strength values tested in the second target test region, б is the conductivity of human tissue, and ρ is the density of human tissue.
According to a second aspect of the embodiments of the present disclosure, there is provided an electromagnetic wave absorption ratio test apparatus, the apparatus including:
the device comprises an area determining module, a first target testing area and a second target testing area, wherein the area determining module is configured to determine a first target testing area in an area formed by preset testing points, and the first number of the preset testing points in the first target testing area is smaller than the total number of the preset testing points;
a testing module configured to test electric field intensity values generated by the terminal at a second number of the preset test points in the first target test area determined by the area determining module, wherein the second number does not exceed the first number;
and the electromagnetic wave absorption ratio determining module is configured to take the preset test point corresponding to the maximum value of the electric field strength value tested by the testing module as a target test point, and determine the electromagnetic wave absorption ratio SAR of the terminal according to the target test point.
Optionally, the region determining module includes:
the first selection submodule is configured to select a first test point in the area formed by the preset test points, and the first test point is the preset test point located at the specified position of the area;
the first testing submodule is configured to test the electric field intensity value generated by the terminal at the first testing point selected by the first selecting submodule;
and the determining submodule is configured to determine the first target test area including the second test point by taking the first test point corresponding to the maximum value of the electric field strength value tested by the first test submodule as the second test point.
Optionally, the designated position is a region vertex of the region.
Optionally, the determining sub-module includes:
and the area dividing unit is configured to divide the first target test area comprising the first number of the preset test points in the area by taking the second test point as an area vertex of the first target test area.
Optionally, the first number is not less than one quarter of the total number and the first number is not more than one half of the total number.
Optionally, the test module comprises:
the second selection submodule is configured to select a plurality of third test points adjacent to the second test point determined by the determination submodule in the first target test area;
the second testing submodule is configured to test the electric field intensity value generated by the terminal at the third testing point selected by the second selecting submodule;
and the control submodule is configured to control the second selection submodule to take the third test point corresponding to the maximum value of the electric field intensity value obtained by the test of the second test submodule as a new second test point, and select a plurality of third test points adjacent to the second test point in the first target test area until the maximum value of the electric field intensity value is obtained by the test of the second number of preset test points.
Optionally, the electromagnetic wave absorption ratio determining module includes:
the area dividing submodule is configured to divide a second target test area in the area by taking the target test point as a circle center and a preset value as a radius;
a third testing sub-module configured to test a maximum value of the electric field strength value generated by the terminal in the second target testing region divided by the region dividing sub-module;
the calculation sub-module is configured to calculate the SAR of the terminal according to the maximum value of the electric field strength value obtained by the third testing sub-module through testing in the second target testing area.
Optionally, the calculation sub-module is configured to calculate the SAR of the terminal according to the following formula:
SAR＝бE2where E is the maximum value of the electric field strength values tested in the second target test region, б is the conductivity of human tissue, and ρ is the density of human tissue.
According to a third aspect of the embodiments of the present disclosure, there is provided an electromagnetic wave absorption ratio test apparatus including:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
determining a first target test area in an area formed by preset test points, wherein the first number of the preset test points in the first target test area is less than the total number of the preset test points;
testing electric field intensity values generated by the terminal at a second number of preset test points in the first target test area, wherein the second number does not exceed the first number;
and taking the preset test point corresponding to the maximum value of the tested electric field strength value as a target test point, and determining the electromagnetic wave absorption ratio SAR of the terminal according to the target test point.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
in the embodiment of the present disclosure, a first target test area including a first number of preset test points may be determined in an area formed by the preset test points, where the first number is smaller than a total number of the preset test points. Further, only the electric field strength values generated by the terminal at a second number of the preset test points need to be tested in the first target test area, wherein the second number does not exceed the first number. And taking the preset test point corresponding to the maximum value of the tested electric field strength value as a target test point, and determining the SAR of the terminal according to the target test point. In the process, the electric field strength value generated by the terminal at each preset test point is not required to be tested, the target test point can be determined only by testing the electric field strength value generated by the terminal at a small number of the preset test points, and then the SAR is determined according to the target test point, so that the SAR testing speed is increased, and the testing time is shortened.
In the embodiment of the disclosure, the first target test area where the target test point is located is roughly determined by the electric field intensity value generated by the test terminal at the first test point located at the specified position in the area. Optionally, the first number of the preset test points included in the first target test area is not less than one fourth of the total number and the first number is not more than one half of the total number. And at most, the target test point can be quickly determined by testing the electric field intensity values generated by the terminal at the first number of the preset test points, so that the SAR is calculated. The SAR testing speed is accelerated, and the testing time is shortened.
In this embodiment of the disclosure, after the first target test area where the target test point is located is determined, a plurality of third test points adjacent to the second test point may be selected from the first target test area, and the electric field intensity value generated by the test terminal at the third test points may be tested. Further, the third test point corresponding to the maximum value of the electric field strength value is used as a new second test point, and the step of selecting a plurality of third test points adjacent to the second test point in the first target test area is returned to be executed until the maximum value of the electric field strength value is obtained by testing in the second number of preset test points. In the process, the process of selecting a plurality of third test points close to the second test point in the first target test area and further testing the electric field strength value generated by the terminal at the third test point is continuously and repeatedly executed, so that the target test points can be quickly determined, the SAR testing speed is increased, and the testing time is shortened.
In the embodiment of the disclosure, the target test point is the preset test point corresponding to the maximum value of the electric field strength values of the terminal in all the preset test points, and after the target test point is determined, a second target test area can be divided in an area formed by all the preset test points by taking the target test point as a circle center and a preset value as a radius. Further, the SAR of the terminal can be calculated only by testing the maximum value of the electric field intensity value generated by the terminal in the second target region. The SAR testing speed is also accelerated, and the testing time is shortened.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1A to 1C are schematic diagrams illustrating an electromagnetic wave absorption ratio test scenario according to an exemplary embodiment of the present disclosure;
FIG. 2 is a flowchart illustrating an electromagnetic wave absorption ratio test method according to an exemplary embodiment of the present disclosure;
FIG. 3 is a schematic diagram illustrating an electromagnetic wave absorption ratio test scenario according to an exemplary embodiment of the present disclosure;
FIG. 4 is a flow chart illustrating another method for measuring the absorption ratio of electromagnetic waves according to an exemplary embodiment of the present disclosure;
fig. 5A to 5B are schematic diagrams illustrating an electromagnetic wave absorption ratio test scenario according to an exemplary embodiment of the present disclosure;
FIG. 6 is a flow chart illustrating another method for measuring the absorption ratio of electromagnetic waves according to an exemplary embodiment of the present disclosure;
FIG. 7 is a flow chart illustrating another method for measuring the absorption ratio of electromagnetic waves according to an exemplary embodiment of the present disclosure;
FIG. 8 is a block diagram of an electromagnetic wave absorption ratio testing apparatus according to an exemplary embodiment of the present disclosure;
FIG. 9 is a block diagram of another electromagnetic wave absorption ratio testing apparatus shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 10 is a block diagram of another electromagnetic wave absorption ratio testing apparatus shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 11 is a block diagram of another electromagnetic wave absorption ratio testing apparatus shown in accordance with an exemplary embodiment of the present disclosure;
FIG. 12 is a block diagram of another electromagnetic wave absorption ratio testing apparatus shown in accordance with an exemplary embodiment of the present disclosure;
fig. 13 is a schematic structural diagram illustrating an apparatus for testing an electromagnetic wave absorption ratio according to an exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the related art, a human body model, a measuring instrument, a probe pair and a mechanical arm form an SAR testing system, and the system is placed in a shielding chamber. The inside of the human body model is a liquid substance, the electromagnetic property of the liquid is consistent with that of human body tissues, and the probe can freely move in the liquid substance for testing. The terminal is located on an equipment support, and the test system locates a relative position between the terminal and a manikin head in the test system, as shown in fig. 1A, the relative position information may include the relative distance value between the terminal and the manikin head. And finally, calculating the SAR through a formula. The SAR calculation formula is as follows:
SAR＝d(dw/dm)/df＝d(dw/ρdv)/df＝бE2where E is the value of the electric field strength in the cell tissue, бIs the electrical conductivity of human tissue, and ρ is the density of human tissue.
As can be seen from the above formula, the SAR of the termination depends on the electric field strength value with known conductivity and density.
When testing the electric field strength value, it is necessary to roughly determine, among a plurality of preset test points, a target test point corresponding to a maximum value of the electric field strength value generated by the terminal, and optionally, the total number of the preset test points may be 54, as shown in fig. 1B. After the target test point is determined, the maximum value of the electric field strength value generated by the terminal needs to be accurately tested around the target test point, as shown in fig. 1C, the test point 17 is the target test point, and it is further determined that the maximum value of the electric field strength value corresponds to a point a around the test point 17. The maximum value of the electric field strength value tested around the target test point is the electric field strength value E in the required cell tissue in the formula.
In order to increase the speed of testing SAR and reduce the testing time, the embodiment of the present disclosure provides an electromagnetic wave absorption ratio testing method, as shown in fig. 2, fig. 2 is an electromagnetic wave absorption ratio testing method according to an exemplary embodiment, and includes the following steps:
in step 201, a first target test area is determined in an area formed by preset test points.
Electromagnetic waves are generally generated by an antenna of a terminal when receiving or transmitting signals, and in order to secure power when receiving or transmitting signals, the antenna is not generally installed in a central area of the terminal, and the antenna may be distributed as shown in fig. 3. The target test point corresponding to the maximum value of the electric field strength value generated by the terminal should be in the area corresponding to the antenna, namely the first target test area. Therefore, in the process of testing the SAR in the embodiment of the present disclosure, the first target test area may be determined in an area formed by a plurality of preset test points.
Optionally, step 201, as shown in fig. 4, may include:
in step 201-1, a first test point is selected from the area formed by the preset test points.
In this step, optionally, the designated position is a region vertex of the region. Accordingly, the number of the first test points is 4. As shown in fig. 1B, 4 of the preset test points located at the vertex of the area are selected as the first test point, that is, the test points 1, 6, 49, and 54 are used as the first test point.
In step 201-2, the electric field strength value generated by the terminal at the first test point is tested.
In this step, the SAR test system may control the probes to be respectively located at different first test points, and test the electric field intensity value generated by the terminal at the first test point according to the related art.
In step 201-3, the first test point corresponding to the maximum value of the tested electric field strength value is used as a second test point, and the first target test area including the second test point is determined.
In this step, the SAR test system may determine, as the second test point, a test point corresponding to a maximum value of the electric field strength values in the 4 first test points.
As shown in fig. 1B, assuming that the electric field intensity value of the test point 6 is determined to be the maximum among the 4 first test points, the test point 6 may be determined as the second test point.
Further, the test system may regard the second test point as one of the region vertices of the first target test region, and divide the first target test region within the region formed by the preset test points. The first target test area needs to include a first number of the preset test points, optionally, the first number is not less than one fourth of the total number of the preset test points and the first number is not more than one half of the total number.
If the test point 6 is determined to be the second test point in fig. 1B, the test point 6 is one of the region vertices of the first target test region. The first number of the preset test points included in the first target test area is at least 54 × 1/4 and at most 54 × 1/2, that is, the first number is not less than 13 and not more than 27. In the embodiment of the present disclosure, the finally determined first target test area may include 16 preset test points as shown in fig. 5A.
In step 202, the electric field strength values generated by the terminal at the second number of the preset test points are tested in the first target test area.
After the first target test area is divided, the electric field strength value generated by each preset test point of the terminal in the first target test area can be tested. The first number of the preset test points included in the first target test area is smaller than the total number of the preset test points, so that the target test points can be quickly determined, the speed of testing the terminal SAR is increased, and the test duration is reduced.
Optionally, in this embodiment of the disclosure, in order to further increase the speed of testing the SAR, only the electric field intensity value generated by the terminal at a second number of the preset test points may be tested, where the second number does not exceed the first number of the preset test points included in the first target test area.
Accordingly, step 202, as shown in fig. 6, may include:
in step 202-1, a plurality of third test points adjacent to the second test point are selected in the first target test area.
In this step, the third test point may be selected in the first target test area, and the selected third test point is close to the second test point. Optionally, the number of the third test points selected may be 3 or 4.
As shown in fig. 5A, if the test point 6 is the second test point, the test points 8, 10, 22, and 20 may be selected as the third test point. In step 202-2, the electric field strength value generated by the terminal at the third test point is tested.
In this step, the SAR test system may control the probes to be respectively located at different third test points, and test the electric field intensity value generated by the terminal at the third test point according to the related art.
In step 202-3, the third test point corresponding to the maximum value of the electric field strength value obtained by the test is used as the new second test point, and the step of selecting a plurality of third test points adjacent to the second test point in the first target test area is returned to be executed until the maximum value of the electric field strength value is obtained by the test in the second number of the preset test points.
In this step, after the electric field strength value generated by the terminal at the third test point is tested, the third test point corresponding to the maximum value of the electric field strength value may be used as a new second test point, the step 202-1 is returned to, a plurality of third test points are selected again, the test point corresponding to the maximum value of the electric field strength value is determined in the newly selected third test point and then determined as a new second test point, and after the steps are performed for a plurality of times, the maximum value of the electric field strength value may be tested in the second number of preset test points.
As shown in fig. 5A, after the test points 8, 10, 22, and 20 are selected as the third test point, the electric field strength values generated by the terminal at the above 4 points are tested, and if the electric field strength value of the test point 8 is the maximum, the test point 8 is taken as the new second test point. A number of new third test points are selected adjacent to test point 8, assuming that the selected new third test points are test points 4, 16 and 18. And if the electric field strength value of the terminal at the test point 16 is the maximum after the test, the test point 16 is used as the new second test point. And selecting a new third test point adjacent to the test point 16, and testing the electric field strength value of the terminal at the test points 9, 15, 17 and 21 by assuming that the test points 9, 15, 17 and 21 around the test point 16 are selected. Until the maximum value of the electric field strength value is determined in the second number of the preset test points.
In step 203, the preset test point corresponding to the maximum value of the tested electric field strength value is used as a target test point, and the electromagnetic wave absorption ratio SAR of the terminal is determined according to the target test point.
In this step, the preset test point corresponding to the maximum value of the electric field strength values obtained by testing in the second number of the preset test points is the required target test point.
As shown in fig. 5A, assuming that a second number of the preset test points are tested in the first target test area, and finally the electric field strength value of the test point 17 is determined to be the maximum, the test point 17 is the required target test point.
In the related art, the target test point corresponding to the maximum value of the electric field strength values generated by the terminal at the 54 preset test points can be determined only after the electric field strength values generated by the terminal at the 54 preset test points need to be tested. In the embodiment of the present disclosure, the electric field strength values generated by the terminal at the 15 preset test points are tested in the first target test area through the above process, so as to determine the target test point, and speed up determining the target test point, that is, speed up testing the terminal SAR.
Further, the test system may partition a second target test area according to the target test point, as shown in fig. 5B, the determined target test point is the test point 17, and the second target test area is partitioned by taking the test point 17 as a circle center and a preset value as a radius. Optionally, the preset value is not more than half of a distance value between two preset test points.
And the testing system tests the maximum value of the electric field strength value generated by the terminal in the second divided target testing area. And substituting the maximum value of the electric field strength value into an SAR calculation formula, thereby calculating the SAR value of the terminal.
In the above embodiment, a first target test area including a first number of preset test points may be determined in an area formed by the preset test points, where the first number is smaller than the total number of the preset test points. Further, only the electric field strength values generated by the terminal at a second number of the preset test points need to be tested in the first target test area, wherein the second number does not exceed the first number. And taking the preset test point corresponding to the maximum value of the tested electric field strength value as a target test point, and determining the SAR of the terminal according to the target test point. In the process, the electric field strength value generated by the terminal at each preset test point is not required to be tested, the target test point can be determined only by testing the electric field strength value generated by the terminal at a small number of the preset test points, and then the SAR is determined according to the target test point, so that the SAR testing speed is increased, and the testing time is shortened.
As shown in fig. 7, fig. 7 is a diagram illustrating another method for testing an electromagnetic wave absorption ratio value according to an exemplary embodiment, including the steps of:
in step 301, a first test point is selected from an area formed by preset test points.
In this step, 4 vertices of the area are selected as the first test points.
In step 302, the terminal is tested for the value of the electric field generated at the first test point.
In this step, the electric field strength values of the terminal generated at the 4 first test points are tested according to the related technology.
In step 303, the first test point corresponding to the maximum value of the tested electric field strength value is used as a second test point, and a first target test area including the second test point is determined.
In this step, the first test point corresponding to the maximum value of the electric field strength obtained by the test is determined as the second test point, the second test point is taken as an area vertex of the first target test area, and the first target test area including the first number of the preset test points is divided in the area formed by the preset test points. Optionally, the first number is not less than one quarter of the total number and the first number is not more than one half of the total number.
In step 304, a plurality of third test points adjacent to the second test point are selected in the first target test area.
In this step, a plurality of the third test points may be selected in the first target test area. Optionally, the third test point is selected at a position adjacent to the second test point.
In step 305, the electric field strength generated by the terminal at the third test point is tested.
In step 306, the third test point corresponding to the maximum value of the tested electric field strength value is determined as the new second test point, and the step 304 is executed again until the maximum value of the electric field strength value is obtained by testing in the second number of the preset test points.
In step 307, the preset test point corresponding to the maximum value of the electric field strength values in the second number of the preset test points is determined as the target test point, and a second target test area is divided in the area by taking the target test point as a circle center and taking a preset value as a radius.
In step 308, the maximum value of the electric field strength value generated by the terminal is tested in the second target test area.
After the second target test area is divided, the maximum value of the electric field strength value generated by the terminal can be tested only by testing the periphery of the target test point according to the related technology.
In step 309, the SAR of the terminal is calculated according to the maximum value of the electric field strength value obtained by the test in the second target test area.
In this step, the maximum value of the electric field strength value tested in step 308 is substituted into an SAR calculation formula, so that the SAR of the terminal can be calculated.
Of course, in the above-described process of testing SAR, it is necessary to ensure that the terminal is in a stable state. Alternatively, before step 301, the magnitude of the electric field generated by the terminal at a certain point may be tested, and the location of the point may be recorded. After step 309 is completed, the electric field strength value generated by the terminal at this point is tested again, and if the difference between the electric field strength values obtained twice does not exceed the preset threshold, it can be determined that the terminal is in a stable state.
In the above embodiment, the electric field strength value generated by the test terminal at each preset test point is not required, and the first target test area where the target test point is located may be determined by the electric field strength value of the test terminal at the first test point located at the specified position in the area. And then searching the preset test point corresponding to the maximum value of the electric field strength value in the first target test area by continuously selecting a new second test point and a new third test point, determining the preset test point as the target test point, and determining the SAR of the terminal according to the target test point. The SAR testing speed is accelerated, and the testing time is shortened.
Corresponding to the foregoing method embodiments, the present disclosure also provides embodiments of an apparatus.
As shown in fig. 8, fig. 8 is a block diagram of an apparatus for testing an electromagnetic wave absorption ratio according to an exemplary embodiment of the present disclosure, the apparatus including: a region determination module 410, a test module 420, and an electromagnetic wave absorption ratio determination module 430.
The area determining module 410 is configured to determine a first target test area in an area formed by preset test points, where a first number of the preset test points included in the first target test area is smaller than a total number of the preset test points;
the testing module 420 is configured to test electric field intensity values generated by the terminal at a second number of the preset test points in the first target test area determined by the area determining module 410, wherein the second number does not exceed the first number;
the electromagnetic wave absorption ratio determining module 430 is configured to determine the electromagnetic wave absorption ratio SAR of the terminal according to the target test point by taking the preset test point corresponding to the maximum value of the electric field strength value tested by the testing module 420 as the target test point.
As shown in fig. 9, fig. 9 is a block diagram of another electromagnetic wave absorption ratio testing apparatus shown in the present disclosure according to an exemplary embodiment, on the basis of the foregoing embodiment shown in fig. 8, the region determining module 410 includes: a first selection submodule 411, a first test submodule 412 and a determination submodule 413.
The first selecting submodule 411 is configured to select a first test point in the area formed by the preset test points, where the first test point is the preset test point located at an appointed position of the area;
a first testing sub-module 412 configured to test the electric field intensity value generated by the terminal at the first test point selected by the first selecting sub-module 411;
the determining submodule 413 is configured to determine the first target test area including the second test point by taking the first test point corresponding to the maximum value of the electric field strength value tested by the first testing submodule 412 as the second test point.
Optionally, the designated position is a region vertex of the region.
As shown in fig. 10, fig. 10 is a block diagram of another electromagnetic wave absorption ratio testing apparatus shown in the present disclosure according to an exemplary embodiment, on the basis of the foregoing embodiment shown in fig. 9, the determining submodule 413 includes: the region dividing unit 4131.
The area dividing unit 4131 is configured to divide the first target test area including the first number of the preset test points within the area with the second test point as an area vertex of the first target test area.
Optionally, the first number is not less than one quarter of the total number and the first number is not more than one half of the total number.
As shown in fig. 11, fig. 11 is a block diagram of another electromagnetic wave absorption ratio testing apparatus shown in the present disclosure according to an exemplary embodiment, on the basis of the foregoing embodiment shown in fig. 9, the testing module 420 includes: a second selection submodule 421, a second test submodule 422 and a control submodule 423.
A second selecting submodule 421 configured to select a plurality of third test points adjacent to the second test point determined by the determining submodule 413 in the first target test area;
a second testing sub-module 422 configured to test the electric field intensity value generated by the terminal at the third testing point selected by the second selecting sub-module 421;
the control submodule 423 is configured to control the second selecting submodule 421 to use the third test point corresponding to the maximum value of the electric field strength value obtained by the test of the second testing submodule 422 as a new second test point, and select a plurality of third test points adjacent to the second test point in the first target test area until the maximum value of the electric field strength value is obtained by the test of the second number of the preset test points.
As shown in fig. 12, fig. 12 is a block diagram of another electromagnetic wave absorption ratio testing apparatus shown in the present disclosure according to an exemplary embodiment, based on any one of the foregoing embodiments shown in fig. 8 to fig. 11, where the electromagnetic wave absorption ratio determining module 430 includes: a region division submodule 431, a third test submodule 432, and a calculation submodule 433.
The area division submodule 431 is configured to divide a second target test area in the area by taking the target test point as a circle center and taking a preset value as a radius value;
the third testing submodule 432 is configured to test a maximum value of the electric field intensity value generated by the terminal in the second target testing region divided by the region dividing submodule 431;
the calculating submodule 433 is configured to calculate the SAR of the terminal according to a maximum value of the electric field strength value obtained by the third testing submodule 432 through testing in the second target testing area.
Optionally, the calculating submodule 433 is configured to calculate the SAR of the terminal according to the following formula:
SAR＝бE2where E is the maximum value of the electric field strength values tested in the second target test region, б is the conductivity of human tissue, and ρ is the density of human tissue.
For the device embodiments, since they substantially correspond to the method embodiments, reference may be made to the partial description of the method embodiments for relevant points. The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the disclosed solution. One of ordinary skill in the art can understand and implement it without inventive effort.
Correspondingly, this disclosure still provides an electromagnetic wave absorption ratio testing arrangement, includes:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
determining a first target test area in an area formed by preset test points, wherein the first number of the preset test points in the first target test area is less than the total number of the preset test points;
testing the electric field intensity value generated by the terminal at a second number of the preset test points in the first target test area, wherein the second number does not exceed the first number;
and taking the preset test point corresponding to the maximum value of the tested electric field strength value as a target test point, and determining the electromagnetic wave absorption ratio SAR of the terminal according to the target test point.
As shown in fig. 13, fig. 13 is a schematic structural diagram illustrating an apparatus 1300 for measuring an electromagnetic wave absorption ratio according to an exemplary embodiment. For example, the apparatus 1300 may be provided as a server of a test system. Referring to fig. 13, apparatus 1300 includes a processing component 1322, which further includes one or more processors, and memory resources, represented by memory 1332, for storing instructions, such as application programs, that may be executed by processing component 1322. The application programs stored in memory 1332 may include one or more modules that each correspond to a set of instructions. In addition, the processing component 1322 is configured to execute the instructions to perform the electromagnetic wave absorption ratio testing method.
The apparatus 1300 may also include a power component 1326 configured to perform power management for the apparatus 1300, a wired or wireless network interface 1350 configured to connect the apparatus 1300 to a network, and an input-output (I/O) interface 1358. The apparatus 1300 may operate based on an operating system stored in the memory 1332, such as Windows Server, MacOS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (15)
1. An electromagnetic wave absorption ratio test method, characterized in that the method comprises:
determining a first target test area in an alternative area formed by preset test points, wherein the first number of the preset test points in the first target test area is less than the total number of the preset test points, the first target test area is an area corresponding to an antenna, and the antenna is not installed in the central area of a terminal;
testing electric field intensity values generated by the terminal at a second number of the preset test points in the first target test area, wherein the second number is multiple and does not exceed the first number;
taking the preset test point corresponding to the maximum value of the tested electric field strength value as a target test point, and determining the electromagnetic wave absorption ratio SAR of the terminal according to the target test point;
the determining a first target test area in the alternative area formed by the preset test points includes:
selecting a first test point in the alternative area formed by the preset test points, wherein the first test point is the preset test point located at the designated position of the alternative area;
testing the electric field strength value generated by the terminal at the first test point;
and taking the first test point corresponding to the maximum value of the tested electric field strength value as a second test point, and determining the first target test area including the second test point.
2. The method of claim 1, wherein the designated location is a region vertex of the candidate region.
3. The method of claim 2, wherein said determining the first target test area including the second test point comprises:
and dividing the first target test area comprising the first number of the preset test points in the alternative area by taking the second test point as an area vertex of the first target test area.
4. The method of claim 3, wherein the first number is not less than one-fourth of the total number and the first number is not more than one-half of the total number.
5. The method of claim 1, wherein said testing the electric field strength values produced by the terminals at the second number of said predetermined test points within the first target test area comprises:
selecting a plurality of third test points adjacent to the second test point in the first target test area;
testing the electric field strength value generated by the terminal at the third test point; and taking the third test point corresponding to the maximum value of the electric field strength value obtained by the test as a new second test point, and returning to execute the step of selecting a plurality of third test points adjacent to the second test point in the first target test area until the maximum value of the electric field strength value is obtained by testing in the second number of preset test points.
6. The method according to any one of claims 1 to 5, wherein the determining the electromagnetic wave absorption ratio SAR of the terminal according to the target test point comprises:
dividing a second target test area in the alternative area by taking the target test point as a circle center and a preset value as a radius;
testing the maximum value of the electric field strength value generated by the terminal in the second target test area;
and calculating the SAR of the terminal according to the maximum value of the electric field strength value obtained by testing in the second target test area.
7. The method of claim 6, wherein the terminal SAR is calculated according to the following formula:
SAR＝бE2where E is the electric field strength measured in the second target test regionThe maximum value of the values, б, is the conductivity of the human tissue, and ρ is the density of the human tissue.
8. An electromagnetic wave absorption ratio test apparatus, comprising:
the device comprises an area determining module, a first target testing area and a second target testing area, wherein the area determining module is configured to determine the first target testing area in an alternative area formed by preset testing points, the first number of the preset testing points in the first target testing area is less than the total number of the preset testing points, the first target testing area is an area corresponding to an antenna, and the antenna is not installed in the central area of a terminal;
a testing module configured to test electric field intensity values generated by the terminal at a second number of the preset test points in the first target test area determined by the area determining module, wherein the second number is multiple and does not exceed the first number;
the electromagnetic wave absorption ratio determining module is configured to take the preset test point corresponding to the maximum value of the electric field strength value tested by the testing module as a target test point, and determine an electromagnetic wave absorption ratio SAR of the terminal according to the target test point;
the region determination module includes:
the first selection submodule is configured to select a first test point in the alternative area formed by the preset test points, and the first test point is the preset test point located at the specified position of the alternative area;
the first testing submodule is configured to test the electric field intensity value generated by the terminal at the first testing point selected by the first selecting submodule;
and the determining submodule is configured to determine the first target test area including the second test point by taking the first test point corresponding to the maximum value of the electric field strength value tested by the first test submodule as the second test point.
9. The apparatus of claim 8, wherein the designated location is a region vertex of the candidate region.
10. The apparatus of claim 9, wherein the determination submodule comprises:
and the area dividing unit is configured to divide the first target test area comprising the first number of the preset test points in the alternative area by taking the second test point as an area vertex of the first target test area.
11. The apparatus of claim 10, wherein the first number is not less than one-fourth of the total number and the first number is not more than one-half of the total number.
12. The apparatus of claim 8, wherein the test module comprises:
the second selection submodule is configured to select a plurality of third test points adjacent to the second test point determined by the determination submodule in the first target test area;
the second testing submodule is configured to test the electric field intensity value generated by the terminal at the third testing point selected by the second selecting submodule;
and the control submodule is configured to control the second selection submodule to take the third test point corresponding to the maximum value of the electric field intensity value obtained by the test of the second test submodule as a new second test point, and select a plurality of third test points adjacent to the second test point in the first target test area until the maximum value of the electric field intensity value is obtained by the test of the second number of preset test points.
13. The apparatus according to any one of claims 8 to 12, wherein the electromagnetic wave absorption ratio determination module includes:
the area dividing submodule is configured to divide a second target test area in the alternative area by taking the target test point as a circle center and taking a preset value as a radius value;
a third testing sub-module configured to test a maximum value of the electric field strength value generated by the terminal in the second target testing region divided by the region dividing sub-module;
the calculation sub-module is configured to calculate the SAR of the terminal according to the maximum value of the electric field strength value obtained by the third testing sub-module through testing in the second target testing area.
14. The apparatus of claim 13, wherein the calculation sub-module is configured to calculate the SAR for the terminal according to the following formula:
SAR＝бE2where E is the maximum value of the electric field strength values tested in the second target test region, б is the conductivity of human tissue, and ρ is the density of human tissue.
15. An electromagnetic wave absorption ratio test apparatus, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
determining a first target test area in an alternative area formed by preset test points, wherein the first number of the preset test points in the first target test area is less than the total number of the preset test points, the first target test area is an area corresponding to an antenna, and the antenna is not installed in the central area of a terminal;
testing electric field intensity values generated by the terminal at a second number of the preset test points in the first target test area, wherein the second number is multiple and does not exceed the first number;
taking the preset test point corresponding to the maximum value of the tested electric field strength value as a target test point, and determining the electromagnetic wave absorption ratio SAR of the terminal according to the target test point;
the determining a first target test area in the alternative area formed by the preset test points includes:
selecting a first test point in the alternative area formed by the preset test points, wherein the first test point is the preset test point located at the designated position of the alternative area;
testing the electric field strength value generated by the terminal at the first test point;
and taking the first test point corresponding to the maximum value of the tested electric field strength value as a second test point, and determining the first target test area including the second test point.
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