CN111478737B - Radio frequency test method, device, electronic device and storage medium - Google Patents
Radio frequency test method, device, electronic device and storage medium Download PDFInfo
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- CN111478737B CN111478737B CN202010316295.9A CN202010316295A CN111478737B CN 111478737 B CN111478737 B CN 111478737B CN 202010316295 A CN202010316295 A CN 202010316295A CN 111478737 B CN111478737 B CN 111478737B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/11—Monitoring; Testing of transmitters for calibration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
Abstract
The application relates to a radio frequency test method, a radio frequency test device, an electronic device and a storage medium, which are used for carrying out radio frequency test on equipment supporting an LPWAN technology, and the method comprises the following steps: receiving a calibration radio frequency signal transmitted by equipment, wherein the calibration radio frequency signal is a radio frequency signal transmitted by the equipment according to a received radio frequency calibration instruction; calculating the radio frequency power value of the received calibration radio frequency signal, and determining a calibration result by using the radio frequency power value; if the calibration result is unqualified, sending a correction instruction to the equipment, wherein the correction instruction controls the equipment to correct the configuration information and resends the calibration radio frequency signal to carry out recalibration until the calibration result is qualified; and if the calibration result is qualified, carrying out radio frequency transmitting and receiving tests on the equipment. The method calibrates the radio frequency power value emitted by the equipment before the radio frequency test is carried out on the equipment, thereby avoiding the problem that the output power deviation of LPWAN equipment produced in the same batch is larger.
Description
Technical Field
The invention belongs to the technical field of radio frequency testing, and particularly relates to a radio frequency testing method, a radio frequency testing device, an electronic device and a storage medium.
Background
A Low-Power Wide-Area Network (LPWAN) technology is a novel wireless communication technology, and is a wireless Network technology capable of performing long-distance communication at a Low bit rate. With the development of the internet of things, the requirements for the rate, power consumption and coverage of wireless transmission are gradually increased, and LPWAN technology is a technology capable of meeting the requirements for both coverage and low power consumption, and can provide ultra-long-distance coverage with extremely low power consumption, and the data transmission rate is only slightly reduced. With the development of the internet of things, the LPWAN technology will be applied more.
However, in the current equipment supporting LPWAN technology, the same batch of products have a problem of large output power deviation, which results in poor product consistency.
Disclosure of Invention
The application provides a radio frequency test method, a radio frequency test device, an electronic device and a storage medium, which are used for solving the technical problem that the output power deviation of the same batch of factory-delivered products of LPWAN equipment is large at present.
The first aspect of the present application provides a radio frequency test method, which is used for performing radio frequency test on a device supporting LPWAN technology, and the method includes:
receiving a calibration radio frequency signal transmitted by the equipment, wherein the calibration radio frequency signal is a radio frequency signal transmitted by the equipment according to a received radio frequency calibration instruction;
calculating a radio frequency power value of a received calibration radio frequency signal, and comparing the radio frequency power value with a preset power threshold range to determine a calibration result;
when the radio frequency power value exceeds a preset power threshold range, determining that the calibration result is unqualified in calibration, and sending a correction instruction to the equipment, wherein the correction instruction controls the equipment to correct configuration information and resends a calibration radio frequency signal to perform recalibration until the calibration result is qualified;
and when the radio frequency power value is within a preset power threshold range, determining that the calibration result is qualified, and performing radio frequency transmitting and receiving tests on the equipment.
A second aspect of the present application provides a radio frequency testing apparatus for performing radio frequency testing on a device supporting LPWAN technology, the apparatus including:
the device comprises a receiving module and a processing module, wherein the receiving module is used for receiving a calibration radio frequency signal transmitted by the device, and the calibration radio frequency signal is a radio frequency signal transmitted by the device according to a received radio frequency calibration instruction;
the calculation module is used for calculating the radio frequency power value of the received calibration radio frequency signal and comparing the radio frequency power value with a preset power threshold range;
the sending module is used for determining that the calibration result is unqualified in calibration and sending a correction instruction to the equipment when the radio frequency power value exceeds a preset power threshold range, wherein the correction instruction controls the equipment to correct configuration information and resends a calibration radio frequency signal;
and the test module is used for determining that the calibration result is qualified when the radio frequency power value is in a preset power threshold range, and then carrying out radio frequency transmitting and receiving tests on the equipment.
A third aspect of the present application provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable by the processor, and when the processor executes the computer program, the steps in the radio frequency test method provided in the first aspect are implemented.
A fourth aspect of the present application provides a storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the radio frequency testing method provided by the first aspect.
As can be seen from the foregoing embodiments of the present application, the radio frequency test method provided by the present application is used for performing radio frequency test on a device supporting LPWAN technology, and the method includes: receiving a calibration radio frequency signal transmitted by equipment, wherein the calibration radio frequency signal is a radio frequency signal transmitted by the equipment according to a received radio frequency calibration instruction; calculating a radio frequency power value of the received calibration radio frequency signal, and determining a calibration result by using the radio frequency power value; if the calibration result is that the calibration is not qualified, sending a correction instruction to the equipment, wherein the correction instruction controls the equipment to correct the configuration information and resends the calibration radio frequency signal to carry out recalibration until the calibration result is qualified; and if the calibration result is qualified, performing radio frequency transmitting and receiving tests on the equipment. The testing method comprises the steps of firstly carrying out radio frequency calibration testing on equipment before carrying out radio frequency transmitting and receiving testing on the equipment supporting the LPWAN technology, if the radio frequency power value of the radio frequency transmitted by the equipment is within a preset range (namely the deviation is within an allowable range), continuing to carry out the radio frequency transmitting and receiving testing, and if the radio frequency power value of the radio frequency transmitted by the equipment is outside the preset range (namely the deviation exceeds the allowable range), controlling the equipment to correct configuration information of the equipment so as to enable the radio frequency power value of the radio frequency transmitted by the equipment to be adjusted to be within the preset range. Therefore, the radio frequency power deviation emitted by the LPWAN products produced in the same batch can be avoided to be large, so that the products in the same batch accord with the consistency of the delivered products.
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 embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a topology diagram of a radio frequency test system;
fig. 2 is a schematic flowchart of a radio frequency testing method according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an rf testing apparatus according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of an RF testing apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an electronic device.
Detailed Description
In order to make the objects, features and advantages of the present application more obvious and understandable, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 shows a topology diagram of a system 10 for factory rf testing of devices having rf transmitting and receiving functions, and as shown in fig. 1, the testing system 10 includes: the integrated tester 101, the computer host 102, and the device under test 103 (there may be a plurality of devices, only 1 device is shown in the figure).
The integrated tester 101 may be controlled by the host computer 102 to load and transmit a radio frequency signal with a specific waveform, and may also receive a radio frequency signal transmitted by the device under test 103 and detect a related index of the received radio frequency signal.
The computer host 102 is used for human-computer interaction with a tester, and can control the device under test 103 to enter a radio frequency test mode under the operation of the tester, and the computer host 102 can also send a control instruction to the comprehensive tester 101 to control the comprehensive tester to transmit a radio frequency signal with a specific frequency to the device under test 103 so as to perform radio frequency receiving test on the device under test 103. The computer host 102 may also transmit a control instruction to the device under test 103 to control the device under test 103 to transmit a radio frequency signal to the integrated tester to perform a radio frequency transmission test on the device under test.
The device under test 103 is a device having radio frequency transmitting and receiving functions, and can perform radio frequency transmitting and receiving under the control of the computer host 102, so as to implement a radio frequency transmitting and receiving test for itself.
The devices may be connected via a data line (e.g., a General-Purpose Interface Bus (GPIB) to USB data line, a twisted pair cable, an RF cable line, etc.), or may communicate via a wireless network.
It will be appreciated that the system topology shown in FIG. 1 is merely exemplary and does not limit the architecture of test system 10, and that test system 10 may include more or fewer components than shown in FIG. 1, or may have a different configuration than shown in FIG. 1. For example, the device under test 103 should be placed in a shielded box to avoid signal interference during testing. The integrated tester 101 may be replaced by a spectrometer, a signal transmitter, and a power divider. In addition, the integrated tester 101 and the computer host 102 may be replaced by a radio frequency tester having both functions.
In order to solve the problem that the output power deviation of the same batch of factory products existing in the LPWAN device is large at present, which results in poor product consistency, an embodiment of the present application provides a radio frequency test method, which is used for performing radio frequency test on a device supporting an LPWAN technology, and the method can be used in the radio frequency tester, as shown in fig. 2, and is a schematic flow diagram of the radio frequency test method provided by the embodiment of the present application, and the method includes the following steps:
In the embodiment of the present application, before detecting the rf transmitting and receiving performance of the device, the rf power transmitted by the device is calibrated first. The radio frequency tester sends a radio frequency calibration instruction to the equipment to be tested, and the radio frequency calibration instruction comprises basic information such as frequency for controlling the equipment to be tested to transmit radio frequency signals. And after receiving the radio frequency calibration instruction sent by the radio frequency tester, the equipment to be tested loads relevant configuration information according to the radio frequency calibration instruction and sends a calibration radio frequency signal. After the device to be tested transmits the calibration radio frequency signal, the radio frequency tester receives the calibration radio frequency signal.
In the embodiment of the present application, after the radio frequency tester receives the calibration radio frequency signal transmitted by the device to be tested, the radio frequency tester calculates the radio frequency power value of the calibration radio frequency signal according to the received calibration radio frequency signal, and stores the radio frequency power value in the memory of the radio frequency tester. At this time, the processor reads the calibration target power value and the standard error allowable value stored in the memory, and determines a power threshold range meeting the requirement, i.e. the preset power threshold range, according to the target power value and the standard error allowable value. And comparing the radio frequency power value obtained by calculation with a preset power threshold range, and determining a calibration result according to the comparison result.
Further, determining a calibration result using the radio frequency power value includes:
if the radio frequency power value is within the preset threshold range, determining that the calibration result is qualified;
and if the radio frequency power value is not in the preset threshold range, determining that the calibration result is unqualified.
Specifically, the radio frequency tester can store the calibration information in the radio frequency calibration record table, as shown in table 1, for the radio frequency calibration record table provided by the present application:
table 1: radio frequency calibration recording table
As can be seen from table 1, table 1 records the frequency of the radio frequency signal transmitted by the device to be tested, the target power received by the radio frequency tester, the calibration error allowance, and the actually calculated radio frequency power value when the radio frequency tester performs radio frequency calibration on the device to be tested. The range within which the rf power value should lie can be determined based on the target power and the calibration error allowance. If the radio frequency power value is within the range, the calibration result is determined to be qualified, otherwise, the calibration result is determined to be unqualified. For example, when the frequency is 903MHz, the preset range of the radio frequency power is 19-21 dBm, and when the actually calculated radio frequency power value is 19.5dBm, the calibration result of the radio frequency calibration is determined to be qualified. In addition, as can be seen from table 1, the calibration scheme can calibrate the radio frequency power of the radio frequency signal transmitted by the device to be tested, and can also calibrate other indexes of the radio frequency signal transmitted by the device to be tested.
And 203, if the calibration result is that the calibration is not qualified, sending a correction instruction to the equipment, wherein the correction instruction controls the equipment to correct the configuration information and resends the calibration radio frequency signal to perform recalibration until the calibration result is qualified.
In this embodiment of the application, when the calibration result determined in step 202 is that the calibration is not qualified, the radio frequency tester sends a correction instruction to the device to be tested, and controls the device to be tested to adjust the configuration information. Specifically, the adjustment may be performed according to a difference between the calculated radio frequency power value and the target power value, and if the calculated radio frequency power value is greater than the target power value and an error exceeds an allowable range, the configuration information is adjusted to reduce the calculated radio frequency power value so that the errors of the remaining target power values are within the allowable range. The correction instruction controls the equipment to be tested to re-transmit the calibration radio frequency signal after adjusting the configuration information besides controlling the equipment to be tested to adjust the configuration information. The rf tester returns to step 201 to perform calibration test on the calibration rf signal transmitted by the device under test again. Specifically, the configuration information of the device to be tested is radio frequency configuration information of the device to be tested, and specifically includes register addresses and register address values of the device to be tested corresponding to different frequencies and target powers.
And 204, if the calibration result is that the calibration is qualified, performing radio frequency transmission and reception test on the equipment.
In this embodiment, when the calibration result determined in step 202 is that the calibration is qualified, it indicates that the radio frequency power value of the radio frequency signal transmitted by the device to be tested meets the requirement, and the performance test of radio frequency transmission and radio frequency reception is continued to be performed on the device to be tested.
As can be seen from the above description, the radio frequency test method provided in the embodiment of the present application is used for performing radio frequency test on a device supporting LPWAN technology, and the method includes: receiving a calibration radio frequency signal transmitted by equipment, wherein the calibration radio frequency signal is a radio frequency signal transmitted by the equipment according to a received radio frequency calibration instruction; calculating the radio frequency power value of the received calibration radio frequency signal, and determining a calibration result by using the radio frequency power value; if the calibration result is that the calibration is not qualified, sending a correction instruction to the equipment, wherein the correction instruction controls the equipment to correct the configuration information and resends the calibration radio frequency signal to carry out recalibration until the calibration result is qualified; and if the calibration result is qualified, performing radio frequency transmitting and receiving tests on the equipment. The testing method comprises the steps of firstly carrying out radio frequency calibration testing on equipment before carrying out radio frequency transmitting and receiving testing on the equipment supporting the LPWAN technology, if the radio frequency power value of the radio frequency transmitted by the equipment meets the requirement (namely the deviation is within the allowable range), continuing to carry out the radio frequency transmitting and receiving testing, and if the radio frequency power value of the radio frequency transmitted by the equipment does not meet the requirement (namely the deviation exceeds the allowable range), controlling the equipment to correct configuration information of the equipment so as to enable the radio frequency power value of the radio frequency transmitted by the equipment to be adjusted to be within the preset range. Therefore, the radio frequency power deviation emitted by the LPWAN products produced in the same batch can be ensured within a certain range, and the consistency of factory products is met.
Further, the radio frequency transmission and reception test is carried out on the equipment, and the method comprises the following steps:
sending a radio frequency emission test instruction to equipment;
receiving a first radio frequency signal sent by equipment according to a radio frequency emission test instruction;
determining whether the radio frequency emission test of the equipment is qualified or not according to the received first radio frequency signal; and the number of the first and second groups,
transmitting a second radio frequency signal to the device;
receiving radio frequency receiving data returned by the equipment;
and determining whether the radio frequency receiving test of the equipment is qualified or not according to the radio frequency receiving data.
In the embodiment of the present application, the radio frequency transmission and reception test on the device is to respectively perform a radio frequency transmission performance test on the device to be tested and a radio frequency reception performance test on the device to be tested.
When the radio frequency emission performance of the equipment to be tested is tested, the radio frequency tester sends an instruction for testing the radio frequency emission performance to the equipment to be tested, and the equipment to be tested emits a first radio frequency signal according to the instruction. It can be understood that, during the process of performing the radio frequency calibration on the device under test, the configuration information of the device under test may be adjusted. If the configuration information of the device to be tested is adjusted in the calibration process, the first radio frequency signal transmitted by the device to be tested is transmitted according to the adjusted configuration information. After the radio frequency tester receives a first radio frequency signal sent by the equipment to be tested, whether the radio frequency emission test of the equipment is qualified is determined according to the first radio frequency signal. Specifically, the radio frequency tester calculates radio frequency indexes of the first radio frequency signal, wherein the radio frequency indexes comprise frequency spectrum density, a radio frequency power value, a center frequency and the like. And if the radio frequency indexes all meet the preset conditions, determining that the radio frequency emission performance test of the equipment to be tested is qualified, otherwise, determining that the radio frequency emission performance test of the equipment to be tested is unqualified. And for the equipment to be tested with qualified radio frequency emission performance test, the next radio frequency receiving performance test can be carried out, and for the equipment to be tested with unqualified radio frequency emission performance test, the equipment to be tested enters a maintenance workshop for maintenance.
And if the radio frequency emission performance of the equipment to be tested is qualified, continuously testing the radio frequency receiving performance of the equipment to be tested. And at the moment, the radio frequency tester transmits a second radio frequency signal to the equipment, and the equipment to be tested calculates radio frequency receiving data according to the received second radio frequency signal after receiving the second radio frequency signal transmitted by the radio frequency tester, wherein the radio frequency receiving data comprises various receiving indexes. And then the equipment to be tested sends the calculated radio frequency receiving data to the radio frequency tester, and the radio frequency tester determines whether the radio frequency receiving test of the equipment is qualified or not according to the radio frequency receiving data returned by the equipment to be tested. If the radio frequency receiving test of the equipment to be tested is also qualified, determining that the equipment to be tested is qualified to carry out the next procedure; and if the radio frequency receiving test of the equipment to be tested is unqualified, sending the equipment to be tested to a maintenance workshop for maintenance.
As can be seen from the above description, the radio frequency test method provided in the embodiment of the present application is applied to radio frequency test of devices supporting LPWAN technology, and the method calibrates the radio frequency transmission power of the devices and tests the radio frequency transmission and absorption performance of the devices, and the test method can be completed only by one radio frequency tester without performing separate tests, thereby saving the test procedures before the devices leave the factory and saving labor. Moreover, the testing method can be completed at one station without plugging and unplugging the equipment for multiple times, so that the plugging and unplugging loss of the equipment and the loss of poor appearance caused by the plugging and unplugging loss are avoided.
Further, the receiving device returns the radio frequency receiving data, including:
an average Received Signal Strength (RSSI) value and an average signal-to-noise ratio (SNR) value returned by the receiving equipment, wherein the average RSSI value and the average SNR value are calculated when the equipment receives a second radio frequency signal,
determining whether the radio frequency reception test of the device is qualified according to the radio frequency reception data, including:
and determining whether the radio frequency receiving test of the equipment is qualified or not according to the average RSSI value and the average SNR value.
In the embodiment of the application, the average RSSI value and the average SNR value are used as receiving indexes, and the test result of the radio frequency receiving performance is determined according to the average RSSI value and the average SNR value.
Specifically, determining whether the radio frequency reception test of the device is qualified according to the average RSSI value and the average SNR value includes:
if the sum of the average RSSI value and the average SNR value is within a preset range, determining that the radio frequency receiving test of the equipment is qualified;
and if the sum of the average RSSI value and the average SNR value is not in the preset range, determining that the radio frequency receiving test of the equipment is unqualified.
Table 2: radio frequency receiving index recording table
As shown in table 2, table 2 is a radio frequency reception index recording table. It can be appreciated that meter power is RSSI + SNR + line loss. The line loss is the connecting line loss of the test system topology and the RF routing line loss in the equipment to be tested. In the embodiment of the application, when the power value of the standard instrument is determined, the compensation of the line loss is considered (namely, the line loss value is subtracted from the power value of the instrument in advance), so that the result of the radio frequency receiving test can be obtained more conveniently according to the data in the table. For example, when the radio frequency is 903MHz, when the calculated average RSSI value + average SNR value is less than-70 dBm, the sum of the average RSSI value and the average SNR value is determined to be within a preset range, and the radio frequency receiving test result of the device to be tested is determined to be qualified. Otherwise, determining that the test result of the radio frequency receiving test of the equipment to be tested is unqualified.
As can be seen from the above description, in the radio frequency testing method provided in this embodiment of the present application, when the radio frequency receiving function of the device is tested, the average RSSI and the average SNR are used as the receiving indexes, and it is only necessary to determine whether the sum of the average RSSI value and the average SNR value is within the preset range, so as to determine whether the radio frequency receiving function of the device is normal. Compared with the traditional method for testing the radio frequency receiving function by adopting the sensitivity probe bottom, the method needs to reduce the power of the instrument for many times and test the packet error rate. The method provided by the application can be used for more efficiently judging whether the radio frequency receiving function of the equipment is normal or not, and the radio frequency testing efficiency of the equipment can be effectively improved.
Further, determining whether the radio frequency emission test of the device is qualified according to the received first radio frequency signal includes:
and acquiring the transmitting power, the spectral density and the frequency of the received first radio-frequency signal, and determining whether the radio-frequency transmitting test of the equipment is qualified or not according to the transmitting power, the spectral density and the frequency.
In the embodiment of the application, after receiving a first radio frequency signal sent by a device to be tested according to a radio frequency emission test instruction, a radio frequency tester analyzes the received radio frequency signal and extracts the emission power, the spectral density and the frequency of the radio frequency signal. And comparing the extracted transmitting power, spectrum density and frequency with a preset transmitting power threshold range, spectrum density threshold range and frequency threshold range. The frequency threshold range is typically determined by the frequency offset value that is expected to be allowed for the center frequency. And only when the transmitting power is in a preset transmitting power threshold range, the spectral density is in a preset spectral density threshold range and the frequency is in a preset frequency threshold range, determining that the radio frequency transmitting test result of the equipment to be tested is qualified. And when any one of the transmission power, the frequency spectrum density and the frequency is not in the corresponding preset threshold range, determining that the radio frequency transmission test result of the equipment to be tested is unqualified.
Further, after determining that the calibration result is qualified and performing radio frequency transmission and reception tests on the device, the method further includes:
and sending the calibration result and the radio frequency transmitting and receiving test result to the equipment, and controlling the equipment to store the calibration result and the radio frequency transmitting and receiving test result in a memory of the equipment.
In the embodiment of the application, after the radio frequency transmitting and receiving test is performed on the device to be tested, the calibration result and the radio frequency transmitting and receiving result of the device to be tested are stored in the memory of the device to be tested. Therefore, when the equipment to be tested enters the maintenance mode, the results of calibration and radio frequency test can be called out so that the equipment problem can be more conveniently tracked, and the maintenance efficiency is improved.
A second aspect of the present application provides a radio frequency testing apparatus, configured to perform radio frequency testing on a device supporting LPWAN technology, as shown in fig. 3, which is a schematic structural diagram of the apparatus, and the apparatus includes the following modules:
the receiving module 301 is configured to receive a calibration radio frequency signal transmitted by a device, where the calibration radio frequency signal is a radio frequency signal transmitted by the device according to a received radio frequency calibration instruction.
The calculating module 302 is configured to calculate a radio frequency power value of the received calibration radio frequency signal, and compare the radio frequency power value with a preset power threshold range.
The sending module 303 is configured to determine that the calibration result is unqualified for calibration and send a correction instruction to the device when the radio frequency power value exceeds the preset power threshold range, where the correction instruction controls the device to correct the configuration information and resend the calibration radio frequency signal.
The test module 304 is configured to determine that the calibration result is qualified when the radio frequency power value is within the preset power threshold range, and perform radio frequency transmission and reception tests on the device.
It can be understood that the functions of the modules of the radio frequency testing apparatus provided in the embodiment of the present application are the same as the contents of the steps of the radio frequency testing method provided in the embodiment of fig. 2, and are not described again here. The application provides a radio frequency testing arrangement, includes: and the receiving module is used for receiving a calibration radio frequency signal transmitted by the equipment, and the calibration radio frequency signal is a radio frequency signal transmitted by the equipment according to the received radio frequency calibration instruction. And the calibration result determining module is used for calculating the radio frequency power value of the received calibration radio frequency signal and determining the calibration result by using the radio frequency power value. And the sending module is used for sending a correction instruction to the equipment if the calibration result is unqualified, and the correction instruction controls the equipment to correct the configuration information and resends the calibration radio frequency signal to perform recalibration until the calibration result is qualified. And the test module is used for carrying out radio frequency transmitting and receiving test on the equipment if the calibration result is that the calibration is qualified. The device carries out radio frequency calibration on the equipment to be tested before carrying out radio frequency test on the equipment, thereby ensuring that the radio frequency power deviation emitted by the LPWAN products produced in the same batch is within a certain range and ensuring the consistency of the products leaving the factory in the same batch.
Further, as shown in fig. 4, for a schematic structural diagram of the radio frequency testing apparatus provided in the embodiment of the present application, the testing module 304 includes:
a radio frequency emission test module 401, configured to perform a radio frequency emission performance test on the device; and the number of the first and second groups,
the radio frequency reception testing module 402 is configured to perform a radio frequency reception performance test on the device, and the radio frequency reception testing module 402 determines whether the radio frequency reception performance of the device is qualified by using the average RSSI value and the average SNR value returned by the device.
In this embodiment, the test module includes a radio frequency transmission module and a radio frequency reception module, and the radio frequency transmission module determines whether the radio frequency reception performance of the device is qualified by using the average RSSI value and the average SNR value. Specifically, the specific functions and steps of determining the rf receiving performance of the device by using the RSSI value and the SNR value have been described in detail in the foregoing embodiments, and are not described again here. The radio frequency testing device provided by the embodiment of the application can improve the efficiency of radio frequency testing.
Further, the above apparatus further comprises:
the storage module 403 is used for storing the calibration result and the test result.
In an embodiment of the present application, the radio frequency testing apparatus further includes a storage module, where the storage module is configured to store the calibration result and the testing result. Of course, the storage module may also be used to store test index data during calibration and testing.
A third aspect of the present application provides an electronic device, which can be used to implement the radio frequency testing method in the foregoing embodiments. As shown in fig. 5, the electronic device mainly includes:
a memory 501, a processor 502, a bus 503, and computer programs stored on the memory 501 and executable on the processor 502, the memory 501 and the processor 502 being connected by the bus 503. The processor 502, when executing the computer program, implements the radio frequency test method in the foregoing embodiments. Wherein the number of processors may be one or more.
The Memory 501 may be a Random Access Memory (RAM) Memory or a non-volatile Memory (non-volatile Memory), such as a disk Memory. The memory 501 is used for storing executable program code, and the processor 502 is coupled to the memory 501.
A fourth aspect of the present application provides a storage medium, which may be a memory. The storage medium has stored thereon a computer program which, when executed by a processor, performs the steps of the radio frequency testing method provided by the first aspect. Further, the computer-readable storage medium may be various media that can store program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a RAM, a magnetic disk, or an optical disk.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules is merely a division of logical functions, and an actual implementation may have another division, for example, a plurality of modules or components may be combined or integrated into another system, or some features may be omitted, or not executed. Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present application may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented in the form of a software functional module and sold or used as a separate product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a readable 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 of the embodiments of the present application. And the aforementioned readable storage medium comprises: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
It should be noted that, for the sake of simplicity, the above-mentioned method embodiments are described as a series of acts or combinations, but those skilled in the art should understand that the present application is not limited by the described order of acts, as some steps may be performed in other orders or simultaneously according to the present application. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required in this application.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
In view of the above description of the radio frequency testing method, apparatus, electronic apparatus and storage medium provided in the present application, those skilled in the art will recognize that the scope of the present application can be varied from the specific embodiments and applications of the present application.
Claims (8)
1. A radio frequency test method for radio frequency testing of a device supporting LPWAN technology, the method comprising:
receiving a calibration radio frequency signal transmitted by the equipment, wherein the calibration radio frequency signal is a radio frequency signal transmitted by the equipment according to a received radio frequency calibration instruction;
calculating a radio frequency power value of a received calibration radio frequency signal, and comparing the radio frequency power value with a preset power threshold range;
when the radio frequency power value exceeds a preset power threshold range, determining that the calibration result is unqualified in calibration and sending a correction instruction to the equipment, wherein the correction instruction controls the equipment to correct configuration information and resends a calibration radio frequency signal;
when the radio frequency power value is within a preset power threshold range, determining that the calibration result is qualified, and performing radio frequency emission test and radio frequency receiving test on the equipment;
performing a radio frequency reception test on the device, comprising:
transmitting a second radio frequency signal to the device; receiving an average RSSI value and an average SNR value returned by the equipment, wherein the average RSSI value and the average SNR value are calculated when the equipment receives the second radio frequency signal; if the sum of the average RSSI value and the average SNR value is within a preset range, determining that the radio frequency receiving test of the equipment is qualified; and if the sum of the average RSSI value and the average SNR value is not in a preset range, determining that the radio frequency receiving test of the equipment is unqualified.
2. The radio frequency test method of claim 1, wherein the performing the radio frequency emission test on the device comprises:
sending a radio frequency emission test instruction to the equipment;
receiving a first radio frequency signal sent by the equipment according to the radio frequency emission test instruction;
and determining whether the radio frequency emission test of the equipment is qualified according to the received first radio frequency signal.
3. The radio frequency test method of claim 2, wherein the determining whether the radio frequency emission test of the device is qualified according to the received first radio frequency signal comprises:
acquiring the transmitting power, the spectral density and the frequency of the received first radio frequency signal;
and determining whether the radio frequency emission test of the equipment is qualified or not according to the emission power, the spectrum density and the frequency.
4. The radio frequency test method of claim 3, wherein the determining whether the radio frequency transmission test of the device is acceptable according to the transmission power, the spectral density, and the frequency comprises:
if the transmitting power is within a preset transmitting power threshold range, the spectral density is within a preset spectral density threshold range and the frequency is within a preset frequency threshold range, determining that the radio frequency transmitting test of the equipment is qualified;
and if the transmitting power is not in the range of a preset transmitting power threshold value, or the frequency spectrum density is not in the range of a preset frequency spectrum density threshold value, or the frequency is not in the range of a preset frequency threshold value, determining that the radio frequency transmitting test of the equipment is unqualified.
5. The method of claim 1, wherein after determining that the calibration result is a qualified calibration and performing the radio frequency transmission test and the radio frequency reception test on the device, the method further comprises:
and sending the calibration result and the radio frequency transmitting and receiving test result to the equipment, and controlling the equipment to store the calibration result and the radio frequency transmitting and receiving test result in a memory of the equipment.
6. A radio frequency test apparatus for radio frequency testing of devices supporting LPWAN technology, the apparatus comprising:
the receiving module is used for receiving a calibration radio frequency signal transmitted by the equipment, wherein the calibration radio frequency signal is a radio frequency signal transmitted by the equipment according to a received radio frequency calibration instruction;
the calculation module is used for calculating a radio frequency power value of the received calibration radio frequency signal and comparing the radio frequency power value with a preset power threshold range;
the sending module is used for determining that the calibration result is unqualified in calibration and sending a correction instruction to the equipment when the radio frequency power value exceeds a preset power threshold range, wherein the correction instruction controls the equipment to correct configuration information and resends a calibration radio frequency signal;
the test module is used for determining that the calibration result is qualified when the radio frequency power value is within a preset power threshold range, and performing radio frequency transmission test and radio frequency receiving test on the equipment;
the test module comprises a radio frequency receiving test module used for carrying out radio frequency receiving test on the equipment, and the radio frequency receiving test module is used for transmitting a second radio frequency signal to the equipment; receiving an average RSSI value and an average SNR value returned by the equipment, wherein the average RSSI value and the average SNR value are calculated when the equipment receives the second radio frequency signal; if the sum of the average RSSI value and the average SNR value is within a preset range, determining that the radio frequency receiving test of the equipment is qualified; and if the sum of the average RSSI value and the average SNR value is not in a preset range, determining that the radio frequency receiving test of the equipment is unqualified.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable by the processor, wherein the processor implements the steps of the method of any one of claims 1 to 5 when executing the computer program.
8. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, performs the steps of the method of any one of claims 1 to 5.
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| CN114513265A (en) * | 2020-11-16 | 2022-05-17 | Oppo广东移动通信有限公司 | Antenna delay calibration method, device, system, equipment and storage medium |
| CN112737706B (en) * | 2021-01-06 | 2022-12-13 | 深圳市精泰达科技有限公司 | Test fixture radio frequency calibration system and method |
| CN112887038A (en) * | 2021-04-30 | 2021-06-01 | 高拓讯达（北京）科技有限公司 | Calibration method and device of wireless communication equipment |
| CN113093081B (en) * | 2021-06-09 | 2021-08-17 | 深圳市鼎阳科技股份有限公司 | Calibration and PV method for spectrum analyzer and production system |
| CN113486617B (en) * | 2021-07-23 | 2023-01-17 | 展讯通信（上海）有限公司 | Line loss value evaluation model generation method, system, device and medium |
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| CN115102637A (en) * | 2022-06-21 | 2022-09-23 | 安翰科技(武汉)股份有限公司 | Method and device for testing capsule endoscope |
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