CN112751627B - Power calibration method and device of wireless module - Google Patents
Power calibration method and device of wireless module Download PDFInfo
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- CN112751627B CN112751627B CN202011484258.5A CN202011484258A CN112751627B CN 112751627 B CN112751627 B CN 112751627B CN 202011484258 A CN202011484258 A CN 202011484258A CN 112751627 B CN112751627 B CN 112751627B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/005—Control of transmission; Equalising
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- H—ELECTRICITY
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- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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- H04B17/00—Monitoring; Testing
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Abstract
The embodiment of the invention provides a power calibration method and device of a wireless module. The method comprises the following steps: determining a radiation power attenuation value of a reference module in a shielding box and a module signal strength of a wireless module in the shielding box; determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength; and calibrating the transmitting power of the wireless module according to the actual power and the target power. The power calibration method and the device for the wireless module, provided by the embodiment of the invention, integrate the detection accuracy of the crimping test point on the basis of antenna detection, so that the power calibration of the wireless module is accurate.
Description
Technical Field
The invention relates to the technical field of communication equipment production, in particular to a power calibration method and device of a wireless module.
Background
The wireless module is important for ensuring the normal operation of the communication equipment, and the stability of the power of the wireless module is directly related to the performance of the communication equipment. Therefore, power calibration for the wireless module is an important step in the production process of the wireless module.
For the calibration of the wireless module power, the prior art generally adopts a radio frequency switch socket, but the cost of the radio frequency switch socket is high, and the radio frequency switch socket is not suitable for popularization and use.
Another common calibration method is to calibrate the power of the wireless module based on radiation. However, the method of radiation calibration has poor accuracy and is prone to cause errors.
Therefore, how to provide a method for accurately calibrating the power of the wireless module is very important.
Disclosure of Invention
To overcome the defects in the prior art, an embodiment of the present invention provides a power calibration method for a wireless module, including:
determining a radiation power attenuation value of a reference module in a shielding box and a module signal strength of a wireless module in the shielding box;
determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength;
calibrating the transmitting power of the wireless module according to the actual power and the target power;
the radiation power attenuation value comprises a radiation power attenuation value after a pressure welding test point is applied to the reference module;
the module signal strength comprises the module signal strength after the wireless module is applied with the compression joint test point.
According to the power calibration method of the wireless module, the radiation power attenuation value after the crimping test point is applied to the reference module and the module signal strength after the crimping test point is applied to the wireless module are obtained, so that the accuracy of the detection of the crimping test point is integrated on the basis of antenna detection, the power calibration of the wireless module is accurate, and the power calibration method has a wide application prospect.
In one embodiment, the determining the radiation power attenuation value of the reference module in the shielding box comprises:
acquiring first signal strength of the reference module in the shielding box measured by an antenna, and determining a first radiation power attenuation value of the reference module according to the first signal strength and the transmission power of the reference module;
after a crimping test point is applied to the reference module, second signal intensity of the reference module in the shielding box, which is measured by the antenna, is obtained, and a second radiation power attenuation value of the reference module is determined according to the second signal intensity and the transmitting power;
and acquiring third signal intensity of a path of the crimping test point after the crimping test point is applied to the reference module, and determining the path loss of the crimping test point according to the third signal intensity and the transmitting power.
According to the power calibration method of the wireless module, provided by the embodiment of the invention, under the condition that the test environment (in a shielding box) is not changed, the first radiation power attenuation value of the reference module when the crimping test point is not applied, the second radiation power attenuation value when the crimping test point is applied and the corresponding crimping test point path loss are obtained through measurement, so that errors caused by the influence of the test environment can be avoided, and the accuracy of each obtained power attenuation value is ensured.
In one embodiment, the determining the module signal strength of the wireless module in the shielded box comprises:
acquiring the signal intensity of a first module of the wireless module in the shielding box, which is measured by the antenna;
after the crimping test point is applied to the wireless module, the signal intensity of a second module of the wireless module in the shielding box, which is measured by the antenna, is obtained;
and acquiring the signal intensity of a third module of the path of the crimping test point after the crimping test point is applied to the wireless module.
According to the power calibration method of the wireless module, provided by the embodiment of the invention, the signal strength of the wireless module is obtained in the same way and in the same detection environment as the power attenuation values, so that the error can be controlled in the minimum range, and the accuracy of the final power calibration of the wireless module is ensured.
In one embodiment, the determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength comprises:
determining a first actual power of the wireless module according to the signal intensity of the first module and the first radiation power attenuation value;
determining a second actual power of the wireless module according to the signal intensity of the second module and the second radiation power attenuation value;
and determining the third actual power of the wireless module according to the signal strength of the third module and the path loss of the crimping test point.
According to the power calibration method of the wireless module, provided by the embodiment of the invention, each actual power of the wireless module is reversely deduced according to each radiation power attenuation value and module signal strength which are obtained under the same test environment, so that the accuracy of the actual power can be ensured.
In one embodiment, the calibrating the transmission power of the wireless module according to the actual power and the target power includes:
determining that a difference value between the first actual power, the second actual power and the third actual power is within a preset difference value range, and acquiring an average power of the first actual power, the second actual power and the third actual power;
calibrating the transmission power of the wireless module to the target power based on the average power.
According to the power calibration method of the wireless module, error data are screened out by determining that the difference value between the actual powers is within the preset difference value range, the average power of the actual powers is obtained to further eliminate the measurement error, and finally the transmitting power of the wireless module is calibrated based on the average power, so that the error is controlled within a very small range, and the accuracy of transmitting power calibration is fully guaranteed.
In one embodiment, the determining the first radiation power attenuation value of the reference module comprises:
determining that attenuation difference values among a plurality of first radiation power attenuation values corresponding to a plurality of transmitting powers of the reference module are within a preset attenuation difference value range, and correcting the first radiation power attenuation values according to the attenuation difference values;
the determining the second radiation power attenuation value of the reference module comprises:
and determining that the attenuation difference value between a plurality of second radiation power attenuation values corresponding to a plurality of transmitting powers of the reference module is within a preset attenuation difference value range, and correcting the second radiation power attenuation value according to the attenuation difference value.
According to the power calibration method of the wireless module provided by the embodiment of the invention, the power calibration precision of the wireless module can be further improved by judging whether the attenuation difference value between each first radiation power attenuation value and each second radiation power attenuation value is within the preset attenuation difference value range or not under different emission power conditions and correcting the first radiation power attenuation value and the second radiation power attenuation value according to the judgment result.
In another aspect, an embodiment of the present invention further provides a system for calibrating power of a wireless module, including:
a measurement module;
the radiation antenna is connected with the measuring module through a single-pole double-throw switch;
a compression joint test point access which is connected with the measuring module through the single-pole double-throw switch; the crimp test point path includes: the compression joint test point is positioned on the reference module to be tested or the wireless module to be tested; the load circuit is connected with the crimping test point through a radio frequency switch;
the measuring module is used for reading the measured values of the radiation antenna and the crimping test point path.
The power calibration system of the wireless module provided by the embodiment of the invention can acquire various signal strengths before and after the pressure welding test point is applied to the reference module or the wireless module only by switching on and off the single-pole double-throw switch and the radio frequency switch, so that the power calibration of the wireless module is realized, and the power calibration system has the advantages of high efficiency and high precision and has wide application prospect.
In another aspect, an embodiment of the present invention further provides a power calibration apparatus for a wireless module, including:
the attenuation determining module is used for determining a radiation power attenuation value of the reference module in the shielding box and the module signal strength of the wireless module in the shielding box;
the power determining module is used for determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength;
the power calibration module is used for calibrating the transmitting power of the wireless module according to the actual power and the target power;
the radiation power attenuation value comprises a radiation power attenuation value after a pressure welding test point is applied to the reference module;
the module signal strength comprises the module signal strength after the wireless module is applied with the compression joint test point.
According to the power calibration device of the wireless module, the radiation power attenuation value after the compression joint test point is applied to the reference module and the module signal strength after the compression joint test point is applied to the wireless module are obtained, so that the accuracy of detection of the compression joint test point is integrated on the basis of antenna detection, the power calibration of the wireless module is accurate, and the power calibration device has a wide application prospect.
On the other hand, an embodiment of the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor implements the steps of the method for calibrating power of a wireless module according to any one of the above descriptions when executing the computer program.
In another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the power calibration method for a wireless module according to any one of the above methods.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flowchart illustrating a method for calibrating power of a wireless module according to an embodiment of the invention;
FIG. 2 is a block diagram of a power calibration system of a wireless module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a power calibration apparatus of a wireless module according to an embodiment of the invention;
fig. 4 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Fig. 1 is a flowchart illustrating a power calibration method of a wireless module according to an embodiment of the invention. Referring to fig. 1, an embodiment of the present invention provides a power calibration method for a wireless module, including:
s110, determining a radiation power attenuation value of the reference module in the shielding box and the module signal strength of the wireless module in the shielding box;
s120, determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength;
s130, calibrating the transmitting power of the wireless module according to the actual power and the target power;
the radiation power attenuation value comprises a radiation power attenuation value after the pressure welding test point is applied to the reference module;
the module signal strength includes a module signal strength after applying the crimp connection test point to the wireless module.
The execution main body of the power calibration method of the wireless module provided by the embodiment of the invention can be electronic equipment, a component in the electronic equipment, an integrated circuit or a chip.
The electronic device may be a mobile electronic device or a non-mobile electronic device. By way of example, the mobile electronic device may be a mobile phone, a tablet computer, a notebook computer, a palm top computer, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook or a Personal Digital Assistant (PDA), and the like, and the non-mobile electronic device may be a server, a Network Attached Storage (NAS), a personal computer (personal computer, PC), a Television (TV), a teller machine, a self-service machine, and the like, and the present invention is not limited in particular.
The following describes the technical solution of the present invention in detail by taking an example in which a computer executes the power calibration method of the wireless module provided by the embodiment of the present invention.
It should be noted that the "reference module" refers to a wireless module with a known and adjustable transmission power through manual and accurate calibration.
Firstly, a reference module can be placed in a shielding box, the signal strength of the antenna measured without applying a crimping test point and after applying the crimping test point of the reference module is obtained, and then the radiation power attenuation value of the antenna measured without applying the crimping test point and after applying the crimping test point of the reference module is determined;
and then, the wireless module is placed in a shielding box, and the module signal strength of the wireless module which is measured by the antenna and is not subjected to the pressure welding test point and after the pressure welding test point is applied is obtained.
After the radiation power attenuation value and the module signal strength are determined, the actual power of the wireless module can be reversely deduced according to the radiation power attenuation value and the module signal strength.
Finally, the transmitting power of the wireless module can be calibrated according to the actual power of the wireless module and the required target power of the wireless module.
In the prior art, the wireless module is usually calibrated only by the antenna, but the signal strength measured by the antenna is usually the signal strength after attenuation in space. Although the testing process can be performed in a shielded environment (e.g., inside a shielded box), the measurement error is still within a large range.
The power calibration method of the wireless module provided by the embodiment of the invention integrates the accuracy of detection of the crimping test point on the basis of antenna detection by acquiring the radiation power attenuation value after the crimping test point is applied to the reference module and the module signal strength after the crimping test point is applied to the wireless module, so that the power calibration of the wireless module is accurate and has wide application prospect.
In one embodiment, determining the radiation power attenuation value of the reference module in the shielding box comprises:
the method comprises the steps of obtaining a first signal strength of a reference module in a shielding box measured by an antenna, and determining a first radiation power attenuation value of the reference module according to the first signal strength and the transmitting power of the reference module;
after the compression joint test point is applied to the reference module, the second signal intensity of the reference module in the shielding box, which is measured by the antenna, is obtained, and a second radiation power attenuation value of the reference module is determined according to the second signal intensity and the transmitting power;
and acquiring third signal intensity of a path of the crimping test point after the crimping test point is applied to the reference module, and determining the path loss of the crimping test point according to the third signal intensity and the transmitting power.
Specifically, the first signal strength of the reference module may be detected directly through the antenna without applying a crimp test point to the reference module.
Setting the transmitting power of the reference module as P0The first signal intensity of the reference module in the shielding box measured by the antenna is SI1The first radiation power attenuation value of the reference module is DL1Then DL1＝P0－SI1(ii) a Suppose P0＝18.0dBm，SI1If-20.0 dBm, then DL1＝38.0dBm。
And then applying a pressure welding test point to the reference module, and measuring the second signal intensity of the reference module through the antenna.
Setting the second signal intensity of the reference module in the shielding box after the antenna is applied with the crimping test point as SI2The second radiation power attenuation value of the reference module is DL2Then DL2＝P0－SI2(ii) a Suppose SI2If-25.0 dBm, then DL2＝43.0dBm。
And finally, acquiring third signal intensity of a path of the crimping test point after the crimping test point is applied to the reference module.
Let the third signal strength be SI3The path loss of the crimp test point is DL3Then DL3＝P0－SI3(ii) a Suppose SI312.0dBm, then DL3＝6.0dBm。
According to the power calibration method of the wireless module, provided by the embodiment of the invention, under the condition that the test environment (in a shielding box) is not changed, the first radiation power attenuation value of the reference module when the crimping test point is not applied, the second radiation power attenuation value when the crimping test point is applied and the corresponding crimping test point path loss are obtained through measurement, so that errors caused by the influence of the test environment can be avoided, and the accuracy of each obtained power attenuation value is ensured.
Further, in one embodiment, determining the module signal strength of the wireless module within the shielded enclosure comprises:
acquiring the signal intensity of a first module of the wireless module in the shielding box, which is measured by an antenna;
acquiring the second module signal strength of the wireless module in the shielding box, which is measured by the antenna after the crimping test point is applied to the wireless module;
and acquiring the signal intensity of a third module of a compression joint test point path after the compression joint test point is applied to the wireless module.
Specifically, the wireless module to be calibrated is placed in a shielding box, and the signal intensity SI of the first module of the wireless module is directly detected through an antenna1’。
Then, applying a pressure welding test point to the wireless module, and measuring the second module signal intensity SI of the wireless module through the antenna2’。
Finally, after the crimping test point is applied to the reference module, the signal intensity SI of the third module of the path of the crimping test point is obtained3’。
According to the power calibration method of the wireless module, provided by the embodiment of the invention, the signal strength of the wireless module is obtained in the same way and in the same detection environment as the power attenuation values, so that the error can be controlled in the minimum range, and the accuracy of the final power calibration of the wireless module is ensured.
Further, in one embodiment, step S120 may include:
determining a first actual power of the wireless module according to the signal intensity of the first module and the first radiation power attenuation value;
determining a second actual power of the wireless module according to the signal intensity of the second module and the second radiation power attenuation value;
and determining the third actual power of the wireless module according to the signal strength of the third module and the path loss of the crimping test point.
It can be understood that, according to the foregoing description, the first actual power is the corresponding transmission power when the wireless module is not applied with the crimping test point in the shielding box; the second actual power is the corresponding transmitting power of the wireless module after the pressure welding test point is applied in the shielding box; and the third actual power is the corresponding transmitting power after the wireless module is applied with the crimping test point in the shielding box and the signal strength is measured through the pathway of the crimping test point.
Let the first actual power be P1Then P is1＝SI1’+DL1(ii) a The second actual power is P2Then P is2＝SI2’+DL2(ii) a The third actual power is P3Then P is3＝SI3’+DL3。
For example, still in DL1＝38.0dBm、DL243.0dBm, and DL3For example, assume that the first module signal strength SI is 6.0dBm1' is-21.1 dBm, the first actual power P1Is-21.1 +38.0 ═ 16.9 dBm; assuming the signal strength SI of the second module2' is-25.9 dBm, then the second actual power P2Is-25.9 +43.0 ═ 17.1 dBm; assuming the signal strength SI of the third module3' is 11.1dBm, the third actual power P3It was 11.1+6.0 ═ 17.1 dBm.
According to the power calibration method of the wireless module, provided by the embodiment of the invention, each actual power of the wireless module is reversely deduced according to each radiation power attenuation value and module signal strength which are obtained under the same test environment, so that the accuracy of the actual power can be ensured.
Further, in one embodiment, step S130 may include:
determining that the difference value between the first actual power, the second actual power and the third actual power is within a preset difference value range, and acquiring the average power of the first actual power, the second actual power and the third actual power;
and calibrating the transmitting power of the wireless module to the target power based on the average power.
In this embodiment, the difference between the first actual power, the second actual power, and the third actual power may be a difference between two comparison results of the three, and when the difference between two comparison results is within a preset difference range, the average power of the first actual power, the second actual power, and the third actual power may be obtained.
Further, the difference between the first actual power, the second actual power, and the third actual power may also be a difference between the second actual power and the first actual power, and when the difference between the second actual power and the first actual power, and the difference between the third actual power and the first actual power are both within a preset difference range, the average power of the first actual power, the second actual power, and the third actual power may be obtained.
The preset difference range may be ± 0.2 dBm. It is understood that the specific size of the preset difference range can be adjusted according to actual needs. For example, when the transmission power is large, the range of the preset difference may be correspondingly increased; and when the transmission power is small, the range of the preset difference value may be correspondingly reduced. The embodiment of the present invention does not specifically limit the size of the preset difference range.
Still at the first actual power P116.9dBm, second actual power P2Is 17.1dBm and the third actual power P3For example, 17.1 dBm: due to P1、P2And P3The difference value between the P values is within the range of +/-0.2 dBm of the preset difference value, so that the P value can be obtained1、P2And P3Average power in between.
It is to be noted that if P1、P2And P3If the difference value between the two is out of the preset difference value range, the fault (such as the damage of a shielding box, the abnormal function of an antenna, the fault of a wireless module and the like) occurs in the testing link, and at the moment, related personnel can be reminded to carry out the inspection of the testing link or the inspection of the tool of the production line.
Further, P can be obtained by1、P2And P3Determining P by sampling and root mean square evaluation1、P2And P3Average power P ofAAnd is based on PAAnd a target power PTAnd calibrating the transmitting power of the wireless module.
For example, suppose PAHas a value of 17.0dBm and a target power PTAt 18.0dBm, the transmitting power of the wireless module can be increased by adjusting a register in the wireless module, for example, until the transmitting power of the wireless module is calibrated to 18.0 dBm.
Correspondingly, let PAHas a value of 19.0dBm and a target power PTAt 18.0dBm, the transmitting power of the wireless module can be reduced by adjusting the relevant register in the wireless module, for example, until the transmitting power of the wireless module is calibrated to 18.0 dBm.
According to the power calibration method of the wireless module, error data are screened out by determining that the difference value between the actual powers is within the preset difference value range, the average power of the actual powers is obtained to further eliminate the measurement error, and finally the transmitting power of the wireless module is calibrated based on the average power, so that the error is controlled within a very small range, and the accuracy of transmitting power calibration is fully guaranteed.
Further, in one embodiment, determining the first radiation power attenuation value of the reference module comprises:
determining that attenuation difference values among a plurality of first radiation power attenuation values corresponding to a plurality of transmitting powers of the reference module are within a preset attenuation difference value range, and correcting the first radiation power attenuation values according to the attenuation difference values;
determining the second radiation power attenuation value of the reference module comprises:
and determining that the attenuation difference value between a plurality of second radiation power attenuation values corresponding to a plurality of transmitting powers of the reference module is within a preset attenuation difference value range, and correcting the second radiation power attenuation value according to the attenuation difference value.
Specifically, the transmission power P of the reference module can be adjusted0Obtaining a plurality of first radiation power attenuation values DL of the reference module under the condition of different transmission powers1And a plurality of second radiation power attenuation values DL2And a statistical table shown in table 1 was prepared.
TABLE 1 comparison table of transmission power, first radiation power attenuation value and second radiation power attenuation value
| Reference module transmitting power P0 | First radiation power attenuation value DL1 | Second radiation power attenuation value DL2 |
| CH1/18.0dBm | 38.0dBm | 43.0dBm |
| CH1/17.0dBm | 37.9dBm | 42.9dBm |
| CH1/16.0dBm | 38.0dBm | 42.8dBm |
| …… | …… | …… |
Then, it can be determined whether the difference between the first radiation power attenuation values (i.e., the attenuation difference) and the difference between the second radiation power attenuation values are within a preset attenuation difference range under different reference module transmission power conditions, and if so, the first radiation power attenuation values and the second radiation power attenuation values are corrected according to the attenuation difference.
The correction mode is to keep the radiation power attenuation value corresponding to the current transmission power consistent with the radiation power attenuation value corresponding to the last transmission power.
For example, the preset attenuation difference range may be ± 0.3 dBm. It is understood that the specific size of the preset attenuation difference range can be adjusted according to actual needs. For example, when the transmit power is large, the range of the preset attenuation difference may be correspondingly increased; and when the transmission power is small, the range of the preset attenuation difference value can be correspondingly reduced. The size of the preset attenuation difference range is not particularly limited in the embodiment of the invention.
Taking the detection with the transmitting power of 18.0dBm first and then the detection with the transmitting power of 17.0dBm as an example: DL1At P0The value at 18.0dBm is 38.0dBm, at P0A value equal to 17.0dBm of 37.9 dBm; since the difference between 38.0dBm and 37.9dBm is 0.1dBm within + -0.3 dBm, the corrected DL1At P0A value equal to 17.0dBm of 38.0dBm, and P0The values at 18.0dBm are identical.
Likewise, DL2At P0The value at 18.0dBm is 43.0dBm, at P0A value equal to 17.0dBm of 42.9 dBm; since the difference between 43.0dBm and 42.9dBm is 0.1dBm within + -0.3 dBm, the corrected DL2At P0A value equal to 17.0dBm of 43.0dBm, and P0The values at 18.0dBm are identical.
After the correction, the first radiation power attenuation value and the second radiation power attenuation value can be updated, and the statistical table shown in table 2 is prepared.
TABLE 2 comparison table of corrected emission power, first radiation power attenuation value and second radiation power attenuation value
| Reference module transmitting power P0 | First radiation power attenuation value DL1 | Second radiation power attenuation value DL2 |
| 18.0dBm | 38.0dBm | 43.0dBm |
| 17.0dBm | 38.0dBm | 43.0dBm |
| 16.0dBm | 38.0dBm | 43.0dBm |
| …… | …… | …… |
It can be understood that, when the difference between the corresponding first radiation power attenuation values exceeds the preset attenuation difference range under different reference module transmitting power conditions, the first radiation power attenuation values are not corrected. Similarly, when the difference between the corresponding second radiation power attenuation values exceeds the preset attenuation difference range under different reference module transmitting power conditions, the second radiation power attenuation values are not corrected.
According to the power calibration method of the wireless module provided by the embodiment of the invention, the power calibration precision of the wireless module can be further improved by judging whether the attenuation difference value between each first radiation power attenuation value and each second radiation power attenuation value is within the preset attenuation difference value range or not under different emission power conditions and correcting the first radiation power attenuation value and the second radiation power attenuation value according to the judgment result.
It should be noted that, the above embodiments only take a single channel for the reference module and the wireless module as an example, and describe the power calibration method of the wireless module provided by the present invention in detail. However, it can be understood that when the reference module and the wireless module have a plurality of channels, the power calibration of the corresponding channel can be completed only by repeating the methods provided in the above embodiments for different channels, and details are not repeated herein.
Fig. 2 is a schematic diagram of a power calibration system of a wireless module according to an embodiment of the invention. Referring to fig. 2, an embodiment of the present invention further provides a system for calibrating power of a wireless module, including:
a measurement module 210;
a radiation antenna 220 connected to the measurement module 210 through a single-pole double-throw switch 211;
a test point access is connected with the measuring module 210 through a single-pole double-throw switch 211; the crimp test point path includes: the compression joint test point 231 is positioned on the reference module to be tested or the wireless module to be tested; the load circuit 232 is connected with the crimping test point 231 through the radio frequency switch 233;
the radiation antenna 220 and the crimp test point path are used to measure the signal strength of the reference module or the wireless module to be measured, and the measurement module 210 is used to read the measurement values of the radiation antenna 220 and the crimp test point path.
Specifically, the single pole double throw switch 211 may be an SP2T radio frequency switch and the radio frequency switch 233 may be an SPST radio frequency switch.
When the single-pole double-throw switch 211 is turned on with the radiation antenna 220 and the radio frequency switch 233 is turned off, the measurement module 210 may obtain the signal strength of the reference module or the wireless module measured by the radiation antenna 220 when the test point is not pressed;
when the single-pole double-throw switch 211 is turned on with the radiation antenna 220 and the radio frequency switch 233 is turned on at the same time, the measurement module 210 can obtain the signal strength of the reference module or the wireless module, which is measured by the radiation antenna 220, after the pressure welding test point is applied;
when the single-pole double-throw switch 211 is turned on with the path of the crimping test point and the rf switch 233 is turned on, the measuring module 210 can measure the signal strength of the path of the crimping test point after the reference module or the wireless module is applied with the crimping test point.
The power calibration system of the wireless module provided by the embodiment of the invention can acquire various signal strengths before and after the crimping test point is applied to the reference module or the wireless module only by switching on and off the single-pole double-throw switch 211 and the radio frequency switch 233, so that the power calibration of the wireless module is realized, and the power calibration system has the advantages of high efficiency and high precision and has wide application prospect.
The invention also provides a power calibration device of the wireless module, which can be correspondingly referenced with the power calibration method of the wireless module.
FIG. 3 is a schematic diagram of a power calibration apparatus of a wireless module according to an embodiment of the invention; as shown in fig. 3, the apparatus includes:
the attenuation determining module 310 is configured to determine a radiation power attenuation value of the reference module in the shielding box and a module signal strength of the wireless module in the shielding box;
a power determining module 320, configured to determine an actual power of the wireless module according to the radiation power attenuation value and the module signal strength;
the power calibration module 330 is configured to calibrate the transmission power of the wireless module according to the actual power and the target power;
the radiation power attenuation value comprises a radiation power attenuation value after the pressure welding test point is applied to the reference module;
the module signal strength includes a module signal strength after applying the crimp connection test point to the wireless module.
According to the power calibration device of the wireless module, the radiation power attenuation value after the compression joint test point is applied to the reference module and the module signal strength after the compression joint test point is applied to the wireless module are obtained, so that the accuracy of detection of the compression joint test point is integrated on the basis of antenna detection, the power calibration of the wireless module is accurate, and the power calibration device has a wide application prospect.
In one embodiment, the attenuation determination module 310 is specifically configured to:
the method comprises the steps of obtaining a first signal strength of a reference module in a shielding box measured by an antenna, and determining a first radiation power attenuation value of the reference module according to the first signal strength and the transmitting power of the reference module;
after the compression joint test point is applied to the reference module, the second signal intensity of the reference module in the shielding box, which is measured by the antenna, is obtained, and a second radiation power attenuation value of the reference module is determined according to the second signal intensity and the transmitting power;
and acquiring third signal intensity of a path of the crimping test point after the crimping test point is applied to the reference module, and determining the path loss of the crimping test point according to the third signal intensity and the transmitting power.
According to the power calibration device of the wireless module provided by the embodiment of the invention, under the condition that the test environment (in a shielding box) is not changed, the first radiation power attenuation value of the reference module when the crimping test point is not applied, the second radiation power attenuation value when the crimping test point is applied and the corresponding crimping test point path loss are obtained through measurement, so that errors caused by the influence of the test environment can be avoided, and the accuracy of each obtained power attenuation value is ensured.
Further, in one embodiment, the attenuation determination module 310 is specifically configured to:
acquiring the signal intensity of a first module of the wireless module in the shielding box, which is measured by an antenna;
acquiring the second module signal strength of the wireless module in the shielding box, which is measured by the antenna after the crimping test point is applied to the wireless module;
and acquiring the signal intensity of a third module of a compression joint test point path after the compression joint test point is applied to the wireless module.
The power calibration device of the wireless module provided by the embodiment of the invention can acquire each signal intensity of the wireless module in the same way and in the same detection environment as the power attenuation values, and can control the error within the minimum range, thereby ensuring the accuracy of the final power calibration of the wireless module.
Further, in one embodiment, the power determination module 320 is specifically configured to:
determining a first actual power of the wireless module according to the signal intensity of the first module and the first radiation power attenuation value;
determining a second actual power of the wireless module according to the signal intensity of the second module and the second radiation power attenuation value;
and determining the third actual power of the wireless module according to the signal strength of the third module and the path loss of the crimping test point.
According to the power calibration device of the wireless module, provided by the embodiment of the invention, each actual power of the wireless module is reversely deduced according to each radiation power attenuation value and the module signal strength which are obtained under the same test environment, so that the accuracy of the actual power can be ensured.
Further, in one embodiment, the power calibration module 330 is specifically configured to:
determining that the difference value between the first actual power, the second actual power and the third actual power is within a preset difference value range, and acquiring the average power of the first actual power, the second actual power and the third actual power;
and calibrating the transmitting power of the wireless module to the target power based on the average power.
According to the power calibration device of the wireless module, error data are screened out by firstly determining that the difference value between the actual powers is within the preset difference value range, then the average power of each actual power is obtained to further eliminate the measurement error, and finally the transmitting power of the wireless module is calibrated based on the average power, so that the error is controlled within a very small range, and the accuracy of transmitting power calibration is fully guaranteed.
Further, in one embodiment, the attenuation determination module 310 is further specifically configured to:
determining that attenuation difference values among a plurality of first radiation power attenuation values corresponding to a plurality of transmitting powers of the reference module are within a preset attenuation difference value range, and correcting the first radiation power attenuation values according to the attenuation difference values;
the attenuation determination module 310 is further specifically configured to:
and determining that the attenuation difference value between a plurality of second radiation power attenuation values corresponding to a plurality of transmitting powers of the reference module is within a preset attenuation difference value range, and correcting the second radiation power attenuation value according to the attenuation difference value.
According to the power calibration device of the wireless module provided by the embodiment of the invention, the power calibration precision of the wireless module can be further improved by judging whether the attenuation difference value between each first radiation power attenuation value and each second radiation power attenuation value is within the preset attenuation difference value range or not under different transmitting power conditions and correcting the first radiation power attenuation value and the second radiation power attenuation value according to the judgment result.
Fig. 4 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 4: a processor (processor)410, a communication interface 420, a memory (memory)430 and a bus (bus)440, wherein the processor 410, the communication interface 420 and the memory 430 are communicated with each other via the bus 440. The processor 410 may call logic instructions in the memory 430 to perform the following method:
determining a radiation power attenuation value of the reference module in the shielding box and the module signal strength of the wireless module in the shielding box;
determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength;
and calibrating the transmitting power of the wireless module according to the actual power and the target power.
In addition, the logic instructions in the memory may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and the like.
Further, embodiments of the present invention disclose a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, which when executed by a computer, the computer is capable of performing the methods provided by the above-mentioned method embodiments, for example, comprising:
determining a radiation power attenuation value of the reference module in the shielding box and the module signal strength of the wireless module in the shielding box;
determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength;
and calibrating the transmitting power of the wireless module according to the actual power and the target power.
In another aspect, an embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the transmission method provided in the foregoing embodiments when executed by a processor, and for example, the method includes:
determining a radiation power attenuation value of the reference module in the shielding box and the module signal strength of the wireless module in the shielding box;
determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength;
and calibrating the transmitting power of the wireless module according to the actual power and the target power.
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 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 may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A method for calibrating power of a wireless module, comprising:
determining a radiation power attenuation value of a reference module in a shielding box and a module signal strength of a wireless module in the shielding box;
determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength;
calibrating the transmitting power of the wireless module according to the actual power and the target power;
the radiation power attenuation value comprises a radiation power attenuation value after a pressure welding test point is applied to the reference module;
the module signal strength comprises the module signal strength after the wireless module is applied with the compression joint test point;
the step of determining the radiation power attenuation value of the reference module in the shielding box comprises the following steps:
acquiring first signal strength of the reference module in the shielding box measured by an antenna, and determining a first radiation power attenuation value of the reference module according to the first signal strength and the transmission power of the reference module;
after a crimping test point is applied to the reference module, second signal intensity of the reference module in the shielding box, which is measured by the antenna, is obtained, and a second radiation power attenuation value of the reference module is determined according to the second signal intensity and the transmitting power;
acquiring third signal intensity of a path of a crimping test point after the crimping test point is applied to the reference module, and determining the path loss of the crimping test point according to the third signal intensity and the transmitting power;
the determining the module signal strength of the wireless module in the shielding box comprises:
acquiring the signal intensity of a first module of the wireless module in the shielding box, which is measured by the antenna;
after the crimping test point is applied to the wireless module, the signal intensity of a second module of the wireless module in the shielding box, which is measured by the antenna, is obtained;
and acquiring the signal intensity of a third module of the path of the crimping test point after the crimping test point is applied to the wireless module.
2. The method of claim 1, wherein the determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength comprises:
determining a first actual power of the wireless module according to the signal intensity of the first module and the first radiation power attenuation value;
determining a second actual power of the wireless module according to the signal intensity of the second module and the second radiation power attenuation value;
and determining the third actual power of the wireless module according to the signal strength of the third module and the path loss of the crimping test point.
3. The method of claim 2, wherein the calibrating the transmission power of the wireless module according to the actual power and the target power comprises:
determining that a difference value between the first actual power, the second actual power and the third actual power is within a preset difference value range, and acquiring an average power of the first actual power, the second actual power and the third actual power;
calibrating the transmission power of the wireless module to the target power based on the average power.
4. The method for calibrating power of a wireless module according to claim 1, wherein the determining the first radiation power attenuation value of the reference module comprises:
determining that attenuation difference values among a plurality of first radiation power attenuation values corresponding to a plurality of transmitting powers of the reference module are within a preset attenuation difference value range, and correcting the first radiation power attenuation values according to the attenuation difference values;
the determining the second radiation power attenuation value of the reference module comprises:
and determining that the attenuation difference value between a plurality of second radiation power attenuation values corresponding to a plurality of transmitting powers of the reference module is within a preset attenuation difference value range, and correcting the second radiation power attenuation value according to the attenuation difference value.
5. A system for power calibration of a wireless module, comprising:
a measurement module;
the radiation antenna is connected with the measuring module through a single-pole double-throw switch;
a compression joint test point access which is connected with the measuring module through the single-pole double-throw switch; the crimp test point path includes: the compression joint test point is positioned on the reference module to be tested or the wireless module to be tested; the load circuit is connected with the crimping test point through a radio frequency switch;
the measuring module is used for reading the measured values of the radiation antenna and the crimping test point path.
6. A power calibration device for a wireless module, comprising:
the attenuation determining module is used for determining a radiation power attenuation value of the reference module in the shielding box and the module signal strength of the wireless module in the shielding box;
the power determining module is used for determining the actual power of the wireless module according to the radiation power attenuation value and the module signal strength;
the power calibration module is used for calibrating the transmitting power of the wireless module according to the actual power and the target power;
the radiation power attenuation value comprises a radiation power attenuation value after a pressure welding test point is applied to the reference module;
the module signal strength comprises the module signal strength after the wireless module is applied with the compression joint test point;
the attenuation determination module is specifically configured to:
acquiring first signal strength of the reference module in the shielding box measured by an antenna, and determining a first radiation power attenuation value of the reference module according to the first signal strength and the transmission power of the reference module;
after a crimping test point is applied to the reference module, second signal intensity of the reference module in the shielding box, which is measured by the antenna, is obtained, and a second radiation power attenuation value of the reference module is determined according to the second signal intensity and the transmitting power;
acquiring third signal intensity of a path of a crimping test point after the crimping test point is applied to the reference module, and determining the path loss of the crimping test point according to the third signal intensity and the transmitting power;
the attenuation determination module is further specifically configured to:
acquiring the signal intensity of a first module of the wireless module in the shielding box, which is measured by the antenna;
after the crimping test point is applied to the wireless module, the signal intensity of a second module of the wireless module in the shielding box, which is measured by the antenna, is obtained;
and acquiring the signal intensity of a third module of the path of the crimping test point after the crimping test point is applied to the wireless module.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the steps of the method for power calibration of a wireless module according to any of claims 1-4.
8. A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method for power calibration of a wireless module according to any of claims 1-4.
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