CN112363187A - Automatic testing method and system for communication module GNSS sensitivity - Google Patents

Automatic testing method and system for communication module GNSS sensitivity Download PDF

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Publication number
CN112363187A
CN112363187A CN202011386925.6A CN202011386925A CN112363187A CN 112363187 A CN112363187 A CN 112363187A CN 202011386925 A CN202011386925 A CN 202011386925A CN 112363187 A CN112363187 A CN 112363187A
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test
communication module
positioning
signal
testing
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CN112363187B (en
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秦美霞
肖粨霖
潘威
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Chongqing Simcom Wireless Solutions Co ltd
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Chongqing Simcom Wireless Solutions Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/23—Testing, monitoring, correcting or calibrating of receiver elements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The invention discloses a method, a system, equipment and a medium for automatically testing the sensitivity of a communication module GNSS, which are used for presetting configuration parameters of communication module GNSS sensitivity automatic testing processes of different testing types; configuring a test instrument according to the setting information; executing a communication module GNSS sensitivity automatic test flow corresponding to the target test type through the set information, wherein the test flow comprises the following steps: controlling a test instrument to continuously transmit a test signal to a communication module within a first preset time period under a target test type and a target test mode; and judging whether the positioning is successful according to the returned response data. The automatic testing of the sensitivity of the communication module GNSS is realized, manual intervention is not needed, and the testing efficiency is improved; the defect of low testing accuracy caused by the fact that the strength of the signal sent by the testing instrument starts to be reduced manually when the communication module does not completely respond to the signal with the preset strength sent by the testing instrument is avoided.

Description

Automatic testing method and system for communication module GNSS sensitivity
Technical Field
The invention relates to the technical field of automatic testing, in particular to a method, a system, equipment and a medium for automatically testing the sensitivity of a communication module GNSS.
Background
The sensitivity test of the communication module GNSS (Global Navigation Satellite System) is a test for checking the performance state of the communication module, and the communication module needs to perform the sensitivity test before being shipped from a factory to detect the recognition capability of the communication module on signals of various levels.
However, in the prior art, when the sensitivity of the communication module GNSS is tested, a manual testing method is generally adopted, which is inefficient. And manually adjusting a test instrument for simulating a satellite on the day, observing feedback data after the communication module is connected with the test instrument, and judging the signal intensity which can be captured by the communication module. This approach may cause the communication module to not completely respond to the signal with the preset intensity sent by the test instrument, and then manually start to reduce the intensity of the signal sent by the test instrument, resulting in low accuracy of the test.
Disclosure of Invention
The invention provides an automatic testing method, system, equipment and medium for communication module GNSS sensitivity, aiming at overcoming the defects of low efficiency and low accuracy of manual communication module GNSS sensitivity testing in the prior art.
The invention solves the technical problems through the following technical scheme:
in a first aspect, the present invention provides an automated testing method for sensitivity of a communication module GNSS, including:
the automatic test method comprises the following steps:
presetting configuration parameters of communication module GNSS sensitivity automatic test flows of different test types;
acquiring setting information of a user;
configuring a test instrument according to the setting information; wherein the setting information comprises a target test type and a target test mode;
executing the communication module GNSS sensitivity automatic test flow corresponding to the target test type through the setting information, wherein the communication module GNSS sensitivity automatic test flow comprises the following steps:
controlling the test instrument to continuously transmit a test signal to a communication module within a first preset time period under the target test type and the target test mode;
and judging whether the positioning is successful according to the response data returned by the communication module.
Preferably, after the step of controlling the test instrument to continuously transmit the test signal to the communication module within a first preset time period in the target test type and the target test mode, the GNSS sensitivity automated test procedure of the communication module further includes:
sending a cold start instruction to the communication module to eliminate original ephemeris information in the communication module;
after the step of determining whether the positioning is successful according to the response data returned by the communication module, the automated testing method further includes:
if the positioning is successful, judging whether the operation of successful positioning statistics needs to be executed;
if so, judging whether the positioning success rate meets a first preset threshold value;
if not, returning to the step of controlling the test instrument to continuously transmit the test signal to the communication module in the target test type and the target test mode, and re-enhancing the strength of the test signal and testing in the step of continuously transmitting the test signal to the communication module within a first preset time period;
if yes, receiving the signal strength and the CN0 value after the positioning is successful;
or the like, or, alternatively,
after the positioning is judged to be successful, ephemeris information is downloaded within a second preset time period;
reducing the signal intensity according to a second preset step, and continuously transmitting the adjusted test signal to the communication module within the first preset time period;
judging whether the communication module is successfully positioned under the adjusted strength of the test signal;
if the positioning is successful, judging whether the operation of successful positioning statistics needs to be executed;
if so, judging whether the positioning success rate meets a first preset threshold value;
if yes, returning to the step of reducing the signal intensity according to a second preset step, and reducing the intensity of the test signal again in the step of continuously transmitting the adjusted test signal to the communication module within the first preset time period and testing;
if not, acquiring the signal strength and the CN0 value after the last positioning success from the signal strength and the CN0 value after the positioning;
or the like, or, alternatively,
the test type is recapture sensitivity test, and after the step of judging whether the positioning is successful according to the response data returned by the communication module, the method further comprises the following steps:
after the positioning is judged to be successful, ephemeris information is downloaded within a second preset time period;
after the strength of the test signal is reduced to be below a second preset threshold value, controlling the test instrument to stop transmitting the test signal to the communication module within a third preset time period;
controlling the test instrument to continuously transmit a test signal below a second preset threshold value to the communication module within the first preset time period;
judging whether the communication module is successfully positioned under the test signal below a second preset threshold value;
if the positioning is successful, judging whether the operation of successful positioning statistics needs to be executed;
if so, judging whether the positioning success rate meets a first preset threshold value;
if not, returning to the step of controlling the test instrument to continuously transmit the test signal below a second preset threshold value to the communication module within the first preset time period, and re-enhancing the strength of the signal strength and testing the signal strength;
if yes, receiving the signal strength and CN0 value after positioning is successful.
Preferably, the target test mode comprises a single positioning mode and a combined mode, wherein the single positioning mode comprises GPS, GLONASS or BD, and the combined mode is a combination of at least two of GPS, GLONASS and BD.
Preferably, the operation for performing positioning success statistics includes operations for acquiring cycle number, total number of single tests, cycle failure stop number, and single expected success number;
and/or;
and when the target test type is a tracking sensitivity test, increasing the numerical value of the second preset step under the signal intensity of-130 dB to-140 dBm.
In a second aspect, the present invention provides an automated testing system for GNSS sensitivity of a communication module, the automated testing system comprising:
the device comprises a presetting module, a communication module and a control module, wherein the presetting module is used for presetting configuration parameters of the GNSS sensitivity automatic test process of the communication modules with different test types;
the acquisition module is used for acquiring the setting information of a user;
the configuration module is used for configuring the test instrument according to the setting information; wherein the setting information comprises a target test type and a target test mode;
the execution module is used for executing the communication module GNSS sensitivity automatic test flow corresponding to the target test type through the setting information; the execution module comprises:
the first control unit is used for controlling the test instrument to continuously transmit a test signal to the communication module within a first preset time period under the target test type and the target test mode;
and the positioning success judging unit is used for judging whether the positioning is successful according to the response data returned by the communication module.
The execution module further comprises:
the cold start instruction sending unit is used for sending a cold start instruction to the communication module so as to eliminate original ephemeris information in the communication module;
if the positioning is successful, calling a first judgment unit;
the first judging unit is used for judging whether the operation of positioning success statistics needs to be executed or not; if necessary, calling a second judgment unit;
the second judging unit is used for judging whether the positioning success rate meets a first preset threshold value; if the signal strength does not meet the requirement, calling the first control unit to re-enhance the signal strength and testing; if yes, calling a first signal strength receiving unit of the signal;
the first signal strength receiving unit is used for receiving the signal strength and the CN0 value after the positioning is successful;
or the like, or, alternatively,
the target test type is a tracking sensitivity test, and the execution module further includes:
after the positioning is judged to be successful, calling an ephemeris information downloading unit;
the ephemeris information downloading unit is used for downloading ephemeris information in a second preset time period;
the second control unit is used for reducing the signal intensity according to a second preset step and continuously transmitting the adjusted test signal to the communication module within the first preset time period;
a third judging unit, configured to judge whether the communication module is successfully positioned under the adjusted strength of the test signal, and if the communication module is successfully positioned, invoke the first judging unit, where the first judging unit is configured to judge whether an operation of successful positioning statistics needs to be performed; if necessary, calling a second judgment unit; the second judging unit is used for judging whether the positioning success rate meets a first preset threshold value;
if so, calling the second control unit to reduce the strength of the test signal again and testing;
if not, calling a second signal strength receiving unit;
the second signal strength receiving unit is used for acquiring the signal strength and the CN0 value after the last positioning is successful from the signal strength and the CN0 value after the positioning;
or the like, or, alternatively,
the test type is a recapture sensitivity test, and the execution module further comprises:
after the positioning is judged to be successful, calling an ephemeris information downloading unit;
the ephemeris information downloading unit is used for downloading ephemeris information in a second preset time period;
the third control unit is used for controlling the test instrument to stop transmitting the test signal to the communication module within a third preset time period after the strength of the test signal is reduced to be below a second preset threshold;
the fourth control unit is used for controlling the test instrument to continuously transmit the test signal below a second preset threshold value to the communication module within the first preset time period;
the fourth judging unit is used for judging whether the communication module is successfully positioned under the test signal below a second preset threshold value; if the positioning is successful, calling a first judging unit, wherein the first judging unit is used for judging whether the operation of successful positioning statistics needs to be executed or not; if necessary, calling a second judgment unit; the second judging unit is used for judging whether the positioning success rate meets a first preset threshold value;
if not, calling a fourth control unit to strengthen the signal intensity again and testing;
if yes, calling a first signal strength receiving unit;
the first signal strength receiving unit is used for receiving the signal strength and the CN0 value after the positioning is successful.
Preferably, the target test mode comprises a single positioning mode and a combined mode, wherein the single positioning mode comprises GPS, GLONASS or BD, and the combined mode is a combination of at least two of GPS, GLONASS and BD.
Preferably, the operation for performing positioning success statistics includes operations for acquiring cycle number, total number of single tests, cycle failure stop number, and expected number of single successes;
and/or;
and when the target test type is a tracking sensitivity test, increasing the numerical value of the second preset step under the signal intensity of-130 dB to-140 dBm.
In a third aspect, the present invention further provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the method for automatically testing the sensitivity of the communication module GNSS described in the first aspect is implemented.
In a fourth aspect, the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the method for automatically testing the sensitivity of a communication module GNSS according to the first aspect.
The positive progress effects of the invention are as follows: the method for automatically testing the sensitivity of the communication module GNSS is provided, so that the automatic testing of the sensitivity of the communication module GNSS is realized, manual intervention is not needed, and the testing efficiency is improved; the defect of low testing accuracy caused by the fact that the communication module does not completely respond to the signal with the preset intensity sent by the testing instrument, the signal intensity sent by the testing instrument is manually reduced is avoided, and the testing precision is improved by automatically testing after automatically adjusting the signal intensity; in the operation of performing the statistics of the positioning success, the total times of single test, the times of single expected success, the times of circulation and the times of stopping circulation failure are determined, so that the condition that the test result is inaccurate due to positioning failure of one time or a few times caused by positioning contingency and other problems under weak signals is reduced.
Drawings
Fig. 1 is a flowchart of an automated testing method for GNSS sensitivity of a communication module according to embodiment 1 of the present invention.
Fig. 2 is a flowchart illustrating an automated testing method for GNSS sensitivity of a communication module according to embodiment 1 of the present invention in testing cold start sensitivity.
Fig. 3 is a flowchart illustrating the method for automatically testing the sensitivity of the communication module GNSS according to embodiment 1 of the present invention.
Fig. 4 is a flowchart illustrating the method for automatically testing the sensitivity of the communication module GNSS according to embodiment 1 of the present invention.
Fig. 5 is a block diagram of an automated testing system for GNSS sensitivity of a communication module according to embodiment 2 of the present invention.
Fig. 6 is a main interface diagram of an automated testing system for GNSS sensitivity of a communication module according to embodiment 2 of the present invention.
Fig. 7 is a first common parameter interface diagram of an automated testing system for GNSS sensitivity of a communication module according to embodiment 2 of the present invention.
Fig. 8 is a second common parameter interface diagram of an automated testing system for GNSS sensitivity of a communication module according to embodiment 2 of the present invention.
Fig. 9 is a schematic view of a first test interface of an automated testing system for GNSS sensitivity of a communication module according to embodiment 2 of the present invention.
Fig. 10 is a second testing interface diagram of the automated testing system for GNSS sensitivity of a communication module according to embodiment 2 of the present invention.
Fig. 11 is a third test interface diagram of an automated testing system for GNSS sensitivity of a communication module according to embodiment 2 of the present invention.
Fig. 12 is a schematic diagram of a hardware structure of an electronic device according to embodiment 4 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
The embodiment provides an automatic testing method for the sensitivity of a communication module GNSS, which may be applied to a client and therefore may be executed by the client, and in particular, the client may be executed by a mobile device such as a smartphone, a tablet computer or a desktop computer. As shown in fig. 1, the automated testing method includes the following steps:
step S1, presetting configuration parameters of the GNSS sensitivity automated testing process of the communication modules of different testing types.
And step S11, acquiring the setting information of the user.
Step S12, configuring a test instrument according to the setting information; wherein the setting information includes a target test type and a target test mode.
Step S2, executing an automatic testing process of sensitivity of the communication module GNSS corresponding to the target test type by setting information, where the automatic testing process of sensitivity of the communication module GNSS includes:
and step S3, controlling the test instrument to continuously transmit a test signal to the communication module within a first preset time period under the target test type and the target test mode.
And step S4, judging whether the positioning is successful according to the response data returned by the communication module.
In this embodiment, after the test is started, it is first required to detect whether the test instrument (GSS6700/GSS7000) is already opened, and if so, it is required to detect whether the network segments of the computer of the client and the test instrument are the same. If the network segments are different, the test will fail.
The target test mode comprises a single positioning mode and a combined mode, wherein the single positioning mode comprises a GPS, a GLONASS or a BD, and the combined mode is a combination of at least two of the GPS, the GLONASS and the BD.
Reading configuration information set by a user, starting corresponding test threads according to the selected target test type and the target test mode in the configuration information, wherein 1 test thread corresponds to 1 test module, a plurality of test threads can be set to test a plurality of test modules simultaneously, and the number of the test modules can be 1, 2, 3, 4 and 5. The target test type can be three types, namely a tracking sensitivity test, a recapture sensitivity test and a cold start sensitivity test, and can be any one of the three types, and the target test module can be any one of GPS, GLONASS, BD, GPS and GLONASS, GPS and BD, GLONASS and BD and GPS, GLONASS and BD. The configuration information can also comprise a communication mode, and the communication mode can adopt an AT interface and an NMEA interface; alternatively, the communication mode may only adopt the NMEA interface. When the communication mode is AT interface and NMEA interface, it needs to judge whether AT interface is opened successfully, then judge whether NMEA interface is opened successfully; when the communication mode is the NMEA interface, only whether the NMEA interface is opened or not needs to be judged, and if the serial port is opened unsuccessfully, the test is directly finished.
And after the communication serial port is successfully opened, configuring a testing instrument according to the configuration information, and continuously transmitting a testing signal to the communication module in a first preset time period through the adopted communication serial port under the target testing type.
And automatically receiving response data returned by the communication module aiming at the transmitted test signal, and judging whether the communication module is successfully positioned under the test signal according to the returned response data.
When testing the sensitivity of the cold start, the automatic testing method for the sensitivity of the communication module GNSS may specifically include the following steps:
step S1, presetting configuration parameters of the GNSS sensitivity automated testing process of the communication modules of different testing types.
And step S11, acquiring the setting information of the user.
Step S12, configuring a test instrument according to the setting information; wherein the setting information includes a target test type and a target test mode.
Step S2, executing an automatic testing process of sensitivity of the communication module GNSS corresponding to the target testing type by setting information, as shown in fig. 2, the automatic testing process of sensitivity of the communication module GNSS includes:
and step S3, controlling the test instrument to continuously transmit a test signal to the communication module within a first preset time period under the target test type and the target test mode.
And step S31, sending a cold start instruction to the communication module to eliminate the original ephemeris information in the communication module.
And step S4, judging whether the positioning is successful according to the response data returned by the communication module, if the positioning is successful, executing step S5, and if the positioning is unsuccessful, acquiring the strength of the current test signal and the CN0 value.
Step S5, determining whether the operation of positioning success statistics needs to be executed, and if so, executing step S6.
And step S6, judging whether the positioning success rate meets a first preset threshold, if not, returning to the step S3 to readjust the strength of the test signal and test, and if so, executing the step S7.
Wherein, returning to control the test instrument to readjust the signal intensity and test in the step of transmitting the test signal to the communication module continuously in the first preset time period under the target test type and the target test mode, including:
and taking the strength of the test signal as a reference, enhancing the strength of the signal according to a first preset step, and testing again.
And step S7, receiving the signal strength and the CN0 value after the positioning is successful.
Specifically, the control instrument outputs a test signal set by the configuration information, and sends a cold start instruction to the communication module through the communication serial port so as to eliminate the original ephemeris information stored in the communication module. And in a first preset time period set by the configuration information, judging that the positioning is not successful according to response data returned by the communication module, and recording the strength of the current test signal and a CN0 value. After returning to step S31, the test signal strength is increased according to the set step, and then a cold start command is sent to the module again to check whether the module can deny the success, so as to loop until the positioning is successful.
After the communication module is successfully positioned according to the response data returned by the communication module, if the configuration information includes the operation of performing successful positioning statistics, the positioning success rate analysis (the number of times of positioning the NMEA statement is analyzed) is started. If the positioning success rate does not satisfy the first preset threshold, the step returns to step S3 to readjust the strength of the test signal and perform the test. The cold start operation is performed again after the signal strength is increased. If the positioning success rate meets the standard, recording the signal strength after successful positioning and the CN0 value after positioning in the cold start sensitivity test, and outputting the result to the test, thus finishing the cold start sensitivity test.
It should be noted that, during the cold start sensitivity test, there must not be any ephemeris information that is helpful for positioning inside the communication module, and the communication module will automatically perform a full-day satellite search after the test is started until the positioning is successful. The worse the test signal intensity is, the longer the positioning time of the cold start sensitivity is, the first preset threshold may be 5min, and the minimum test signal intensity that the cold start positioning can be successful in the first preset time period is the cold start sensitivity.
When the communication module GNSS sensitivity automated test method is used for testing the tracking sensitivity, the method may specifically include the following steps:
step S1, presetting configuration parameters of the GNSS sensitivity automated testing process of the communication modules of different testing types.
And step S11, acquiring the setting information of the user.
Step S12, configuring a test instrument according to the setting information; the setting information includes a target test type and a target test mode, and the target test type is a tracking sensitivity test.
Step S2, executing an automatic testing process of sensitivity of the communication module GNSS corresponding to the target testing type by setting information, as shown in fig. 3, the automatic testing process of sensitivity of the communication module GNSS includes:
and step S3, controlling the test instrument to continuously transmit a test signal to the communication module within a first preset time period under the target test type and the target test mode.
And step S4, judging whether the positioning is successful according to the response data returned by the communication module, and if the positioning is successful, executing step S41.
And step S41, downloading the ephemeris information in a second preset time period.
And step S42, reducing the signal intensity according to a second preset step, and continuously transmitting the adjusted test signal to the communication module within a first preset time period.
And step S43, determining whether the communication module is successfully positioned under the adjusted strength of the test signal, if so, executing step S5, and if not, executing step S71.
Step S5, determining whether the operation of positioning success statistics needs to be executed, and if so, executing step S6.
And step S6, judging whether the positioning success rate meets a first preset threshold, if so, returning to the step S42 to readjust the strength of the test signal and test, and if not, executing the step S71.
And step S71, outputting the signal intensity and the CN0 value after the last positioning success from the signal intensity and the CN0 value after positioning.
Specifically, if the current test type is the tracking sensitivity test, the test instrument is controlled to continuously transmit a test signal to the communication module within a first preset time period, whether the positioning is successful or not is judged according to response data returned by the communication module, and if the positioning is failed, the tracking sensitivity test is finished. And if the positioning is successful, downloading the ephemeris information within a second preset time period set by the configuration information. After the ephemeris information is downloaded, the strength of the current test signal and the CN0 value may be obtained.
If the satellite positioning system is in the GPS measurement mode, the ephemeris information is an accurate position or track table of the positioning satellite which changes along with the running time. Reducing the signal intensity according to a second preset step, continuously transmitting the adjusted test signal to the communication module within a first preset time period, judging whether the communication module is successfully positioned under the intensity of the adjusted test signal within a time range set by the configuration information,
if the positioning is successful, whether the operation of successful positioning statistics needs to be carried out is judged according to the configuration information, and the current test signal intensity and the CN0 value are recorded and the signal intensity is reduced according to the setting if the operation is not required. And if so, counting the success rate. And when the positioning success rate does not meet the set value, continuing to reduce the signal intensity according to a set second preset step. And circulating until the positioning fails or the success rate is lower than a set value, recording the strength of the test signal which can be positioned last time and the CN0 value and outputting the result, and ending the tracking sensitivity test.
When the automatic testing method for the sensitivity of the communication module GNSS is used for testing the reacquisition sensitivity, the method may specifically include the following steps:
step S1, presetting configuration parameters of the GNSS sensitivity automated testing process of the communication modules of different testing types.
And step S11, acquiring the setting information of the user.
Step S12, configuring a test instrument according to the setting information; the setting information comprises a target test type and a target test mode, and the target test type is a recapture sensitivity test.
Step S2, executing an automatic testing process of sensitivity of the communication module GNSS corresponding to the target testing type by setting information, as shown in fig. 4, the automatic testing process of sensitivity of the communication module GNSS includes:
and step S3, controlling the test instrument to continuously transmit a test signal to the communication module within a first preset time period under the target test type and the target test mode.
And step S4, judging whether the positioning is successful according to the response data returned by the communication module, and if the positioning is successful, executing step S41.
And step S41, downloading the ephemeris information in a second preset time period.
And step S44, after the strength of the test signal is reduced to be below the second preset threshold value, controlling the test instrument to stop transmitting the test signal to the communication module within a third preset time period.
And step S45, controlling the test instrument to continuously transmit the test signal below the second preset threshold value to the communication module within the first preset time period.
Step S46, determining whether the communication module is successfully positioned under the test signal below the second preset threshold.
Step S5, determining whether the operation of positioning success statistics needs to be executed, and if so, executing step S6.
And step S6, determining whether the positioning success rate satisfies a first preset threshold, if not, returning to step S45 to readjust the strength of the test signal and performing the test, and if so, executing step S7.
And step S7, receiving the signal strength and the CN0 value after the positioning is successful.
And if the recapture sensitivity is tested, controlling the test instrument to reduce the strength of the test signal to be below a second preset threshold value, closing the test signal in a set third preset time period, and then controlling the test instrument to continuously transmit the test signal below the second preset threshold value to the communication module in the first preset time period.
Judging whether the communication module is successfully positioned under the test signal below a second preset threshold value; if the positioning fails, the current test signal strength can be recorded. If the positioning is successful, if the positioning success rate needs to be counted, counting the positioning success rate. If the success rate is lower than the set value, the test is carried out again according to the preset step-by-step enhanced signal intensity, if the positioning success rate of the communication module meets a first preset threshold value, the signal intensity and the CN0 value after the positioning is successful at this time are recorded, the signal intensity capable of being positioned at the maximum and the CN0 value after the positioning can be output, and the recapture sensitivity test is finished.
The target test mode comprises a single positioning mode and a combined mode, wherein the single positioning mode comprises a GPS, a GLONASS or a BD, and the combined mode is a combination of at least two of the GPS, the GLONASS and the BD; the operation of carrying out positioning success statistics comprises the operation of obtaining cycle times, single test total times, cycle failure stop times and single expected success times; and/or; and when the target test type is a tracking sensitivity test, increasing the numerical value of the second preset step under the signal intensity of-130 dB to-140 dBm.
The method for automatically testing the sensitivity of the communication module GNSS is provided, so that the automatic testing of the sensitivity of the communication module GNSS is realized, manual intervention is not needed, and the testing efficiency is improved; the defect of low testing accuracy caused by the fact that the communication module does not completely respond to the signal with the preset intensity sent by the testing instrument, the signal intensity sent by the testing instrument is manually reduced is avoided, and the testing precision is improved by automatically testing after automatically adjusting the signal intensity; in the operation of performing the statistics of the positioning success, the total times of single test, the times of single expected success, the times of circulation and the times of stopping circulation failure are determined, so that the condition that the test result is inaccurate due to positioning failure of one time or a few times caused by positioning contingency and other problems under weak signals is reduced.
Example 2
The present embodiment provides an automated testing system for GNSS sensitivity of a communication module, as shown in fig. 5, the automated testing system specifically includes: the system comprises a presetting module 110, an obtaining module 111, a configuration module 112 and an execution module 120, wherein the execution module 120 comprises a first control unit 130 and a positioning success judgment unit 140.
The preset module 110 is configured to preset configuration parameters of the GNSS sensitivity automatic test process of the communication modules of different test types;
an obtaining module 111, configured to obtain setting information of a user;
a configuration module 112, configured to configure the test instrument according to the setting information; wherein the setting information comprises a target test type and a target test mode;
an executing module 120, configured to execute the communication module GNSS sensitivity automation test procedure corresponding to the target test type through the setting information;
the execution module 120 includes:
the first control unit 130 is configured to control the test instrument to continuously transmit a test signal to the communication module within a first preset time period in the target test type and the target test mode;
and a positioning success judging unit 140, configured to judge whether the positioning is successful according to the response data returned by the communication module.
If the target test type is a cold start sensitivity test, the executing module 120 includes: cold start instruction transmitting unit 131, first determining unit 150, second determining unit 160, and first signal strength receiving unit 170.
The cold start instruction sending unit 131 is configured to send a cold start instruction to the communication module to eliminate original ephemeris information in the communication module;
the first judging unit 150 is configured to judge whether an operation of positioning success statistics needs to be performed; if necessary, call the second determination unit 160;
a second determining unit 160, configured to determine whether the positioning success rate meets a first preset threshold, and if so, invoke the first control unit 130 to re-enhance the signal strength and perform the test; if yes, the signal first signal strength receiving unit 170 is called;
and a first signal strength receiving unit 170, configured to receive the signal strength and the CN0 value after the positioning is successful.
If the target test type is the tracking sensitivity test, the executing module 120 includes: ephemeris information downloading section 141, second control section 142, third determining section 143, and second signal strength receiving section 171.
The ephemeris information downloading unit 141 is configured to download the ephemeris information within a second preset time period;
a second control unit 142, configured to reduce the signal strength according to a second preset step, and continuously transmit the adjusted test signal to the communication module within a first preset time period;
a third determining unit 143, configured to determine whether the communication module is successfully located under the adjusted strength of the test signal, if the communication module is successfully located, the first determining unit 150 is invoked,
a first determining unit 150, configured to determine whether an operation of location success statistics needs to be performed; if necessary, call the second determination unit 160;
a second determining unit 160, configured to determine whether the positioning success rate meets a first preset threshold, and if so, invoke the second control unit 142 to reduce the strength of the test signal again and perform the test; if not, the second signal strength receiving unit 171 is called;
the second signal strength receiving unit 171 is configured to obtain the signal strength and the CN0 value after the last positioning success from the signal strength and the CN0 value after the positioning.
If the target test type is a recapture sensitivity test, the executing module 120 includes: ephemeris information downloading unit 141, third control unit 144, fourth control unit 145, fourth determining unit 146, and first signal strength receiving unit 170.
The ephemeris information downloading unit 141 is configured to download the ephemeris information within a second preset time period;
a third control unit 144, configured to control the test instrument to stop transmitting the test signal to the communication module within a third preset time period after the strength of the test signal is reduced to be below a second preset threshold;
the fourth control unit 145, configured to control the tested instrument to continue to transmit the test signal below the second preset threshold to the communication module for the first preset time period;
a fourth determining unit 146, configured to determine whether the communication module is successfully located under the test signal below the second preset threshold; if the positioning is successful, the first determination unit 150 is invoked,
a first determining unit 150, configured to determine whether an operation of location success statistics needs to be performed; if necessary, call the second determination unit 160;
a second determining unit 160, configured to determine whether the positioning success rate meets a first preset threshold, and if not, invoke the fourth controlling unit 145 to re-enhance the signal strength and perform the test; if yes, the first signal strength receiving unit 170 is called;
and a first signal strength receiving unit 170, configured to receive the signal strength and the CN0 value after the positioning is successful.
The target test mode comprises a single positioning mode and a combined mode, wherein the single positioning mode comprises a GPS, a GLONASS or a BD, and the combined mode is a combination of at least two of the GPS, the GLONASS and the BD; the operation of carrying out positioning success statistics comprises the operation of obtaining cycle times, single test total times, cycle failure stop times and single expected success times;
and/or;
and when the target test type is a tracking sensitivity test, increasing the numerical value of the second preset step under the signal intensity of-130 dB to-140 dBm.
Fig. 6 is a main interface diagram of an automatic testing system for GNSS sensitivity of the communication module according to the present embodiment. The main interface is divided into a menu bar, a log display area, a result display area, a test state indication area, a button area and a test waiting progress area.
A menu bar: the menu bar is divided into two parts, namely a setting part and a related part. And a Log display area: and displaying all required test logs, and conveniently checking the test progress. Result display area: and the test result is displayed, so that the test condition is conveniently checked. The test status indicates: the real-time indication of the current software Running state includes Ready, Running, stored, Pause, Fail and Completed states, and the current test positioning mode. A button area: including a start button and a pause button. Test waiting progress area: and displaying the progress of the current test state through the progress bar in a countdown mode.
As shown in fig. 7, a first common parameter interface diagram of an automated testing system for GNSS sensitivity of a communication module according to this embodiment is shown, where the first common parameter interface includes: project name, test item, etc. The communication mode can comprise AT + NMEA and NMEA, and is selected according to the communication mode of the project. Selecting an instrument: GSS6700, GSS7000, which instrument is used to select which instrument. And (3) a test mode: the method comprises three single positioning modes and a combination mode, and the three single positioning modes and the combination mode are selected according to actual test requirements. Initial signal intensity: for both tracking sensitivity and reacquisition sensitivity, there is an ephemeris download before testing, i.e. a positioning download is required at this initial signal strength. The GPS test mode is-130 dBm, the GLONASS test mode is-131 dBm, and the Beidou test module is-133 dBm. Setting an instrument port: this port fills in the IP address of the test instrument for controlling the test instrument. End-print NMEA statement: this function is used to determine whether log outputs NMEA. The line loss may be filled in with a line loss value according to the actual test environment.
As shown in fig. 8, a second common parameter interface diagram of the automatic testing system for GNSS sensitivity of a communication module in this embodiment may include multiple serial port setting, positioning success statistics, analysis of NMEA GSV specific statements, and configuration file loading. And (3) multi-serial port setting: according to the actual test item and the selection of the communication mode in the public parameter 1, if the test module supports the AT port to send an instruction and the NMEA port reads the positioning information, the AT port and the NMEA port need to be selected and filled with the corresponding serial port number, and the previous module is selected. Which module is selected corresponds to which thread is started. Similarly, if the test module only supports the NMEA port to send the instruction and read the positioning information, only the module and the NMEA port are selected and the corresponding serial port number is filled.
And (3) counting the positioning success: in NMEA, words are dispensed at a frequency of 1 Hz. Taking the data filled in fig. 8 as an example, the total number of times of single test is 10, and the expected number of times of single success is 7, which indicates that in each 10 effective NMEA sentences, as long as the sentences satisfying 7 times are successfully positioned, the set requirement is met, the success rate of positioning at this time is greater than or equal to 70%, the cycle number is 8, the cycle failure stop number is 3, which indicates that the test of 70% success rate is performed again for 8 times, and if the success rates of 3 times all reach 70%, the set requirement is met. The sensitivity test can reduce the situation that the test result is inaccurate due to one or a few positioning failures caused by positioning contingency and other problems under weak signals.
The expected character: during testing, NMEA statements for individual platforms or special modules contain some non-positioning statements, and sometimes, the issued 1Hz information does not contain any positioning information at all, so that the probability of software analysis positioning is influenced.
Analyzing NMEA GSV specification statement: the CN0 value after the analysis module is located needs to use a GSV statement in NMEA, generally GPGSV represents the ephemeris of GPS, GLGSV represents GLONASS, BDGSV represents Beidou. However, some special modules, especially for beidou, will represent beidou by, for example, PQGSV, GBGSV.
The configuration file loading can be used for loading the set project configuration parameters, and is simple, convenient and quick.
Fig. 9 is a schematic view of a first test interface of the automatic testing system for GNSS sensitivity of a communication module according to this embodiment. The cold start sensitivity includes initial signal strength, increment step value, cold start time, and cold start command. The initial signal strength characterization gives a signal strength that is more critical and the module cannot successfully cold start. Increasing the step value indicates that each cold start was not successfully located, and the signal strength is increased by this step. The cold start time characterizes a given module cold start time.
Fig. 10 is a schematic diagram of a second test interface of the automatic testing system for GNSS sensitivity of a communication module according to the present embodiment. The tracking sensitivity test interface comprises the waiting time of downloading ephemeris, the waiting positioning time, the interval after the positioning is successful and the signal is decreased and stepped. When the signal is set in a decreasing and stepping mode, the module can appropriately increase the stepping under a strong signal, and the stepping is appropriately reduced as the signal is closer to a test critical value, so that the effect of accurate test is achieved.
Fig. 11 is a schematic diagram of a third testing interface of the automatic testing system for GNSS sensitivity of a communication module according to the present embodiment. The reacquisition sensitivity interface comprises five items of waiting time for downloading ephemeris, reacquisition initial signal strength, increment step value, waiting positioning time and waiting time for signal closing. The reacquired initial signal strength is used for representing a weak signal strength of a given communication module which cannot be positioned, and the signal strength is enhanced on the basis of the weak signal strength so as to search for a weak signal which can be positioned just right.
The automatic testing system for the sensitivity of the communication module GNSS is provided, so that the automatic testing of the sensitivity of the communication module GNSS is realized, manual intervention is not needed, and the testing efficiency is improved; the defect of low testing accuracy caused by the fact that the strength of the signal sent by the testing instrument starts to be reduced manually when the communication module does not completely respond to the signal with the preset strength sent by the testing instrument is avoided; the test precision is improved by automatically testing after automatically adjusting the signal intensity; in the operation of performing the statistics of the positioning success, the total times of single test, the times of single expected success, the times of circulation and the times of stopping circulation failure are determined, so that the condition that the test result is inaccurate due to positioning failure of one time or a few times caused by positioning contingency and other problems under weak signals is reduced.
Example 3
The present embodiment provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the method for automated testing of the sensitivity of a communication module GNSS of embodiment 1.
More specific examples, among others, that the readable storage medium may employ may include, but are not limited to: a portable disk, a hard disk, random access memory, read only memory, erasable programmable read only memory, optical storage device, magnetic storage device, or any suitable combination of the foregoing.
In a possible implementation form, the invention can also be implemented in the form of a program product comprising program code means for causing a terminal device to carry out the steps of the method for the automated testing of the sensitivity of a communication module GNSS according to example 1, when said program product is run on said terminal device.
Where program code for carrying out the invention is written in any combination of one or more programming languages, the program code may be executed entirely on the user device, partly on the user device, as a stand-alone software package, partly on the user device and partly on a remote device or entirely on the remote device.
Example 4
Fig. 12 is a schematic structural diagram of an electronic device provided in this embodiment. The electronic device includes a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor executes the program to implement the method for automatically testing the sensitivity of the communication module GNSS of embodiment 1, and the electronic device 30 shown in fig. 12 is only an example and should not bring any limitation to the function and the scope of the embodiment of the present invention.
The electronic device 30 may be embodied in the form of a general purpose computing device, which may be, for example, a server device. The components of the electronic device 30 may include, but are not limited to: the at least one processor 31, the at least one memory 32, and a bus 33 connecting the various system components (including the memory 32 and the processor 31).
The bus 33 includes a data bus, an address bus, and a control bus.
The memory 32 may include volatile memory, such as Random Access Memory (RAM)321 and/or cache memory 322, and may further include Read Only Memory (ROM) 323.
Memory 32 may also include a program/utility 325 having a set (at least one) of program modules 324, such program modules 324 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
The processor 31 executes various functional applications and data processing, such as an automatic testing method of the sensitivity of the communication module GNSS according to embodiment 1 of the present invention, by executing the computer program stored in the memory 32.
The electronic device 30 may also communicate with one or more external devices 34 (e.g., keyboard, pointing device, etc.). Such communication may be through input/output (I/O) interfaces 35. Also, model-generating device 30 may also communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet) via network adapter 36. As shown, network adapter 36 communicates with the other modules of model-generating device 30 via bus 33. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the model-generating device 30, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems, etc.
It should be noted that although in the above detailed description several units/modules or sub-units/modules of the electronic device are mentioned, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more of the units/modules described above may be embodied in one unit/module according to embodiments of the invention. Conversely, the features and functions of one unit/module described above may be further divided into embodiments by a plurality of units/modules.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.

Claims (10)

1. An automatic testing method for communication module GNSS sensitivity is characterized by comprising the following steps:
presetting configuration parameters of communication module GNSS sensitivity automatic test flows of different test types;
acquiring setting information of a user;
configuring a test instrument according to the setting information; wherein the setting information comprises a target test type and a target test mode;
executing the communication module GNSS sensitivity automatic test flow corresponding to the target test type through the setting information, wherein the communication module GNSS sensitivity automatic test flow comprises the following steps:
controlling the test instrument to continuously transmit a test signal to a communication module within a first preset time period under the target test type and the target test mode;
and judging whether the positioning is successful according to the response data returned by the communication module.
2. The method according to claim 1, wherein the target test type is a cold start sensitivity test, and after the step of controlling the testing apparatus to continuously transmit the test signal to the communication module for a first predetermined period in the target test type and the target test mode, the communication module GNSS sensitivity automated testing procedure further comprises:
sending a cold start instruction to the communication module to eliminate original ephemeris information in the communication module;
after the step of determining whether the positioning is successful according to the response data returned by the communication module, the automated testing method further includes:
if the positioning is successful, judging whether the operation of successful positioning statistics needs to be executed;
if so, judging whether the positioning success rate meets a first preset threshold value;
if not, returning to the step of controlling the test instrument to continuously transmit the test signal to the communication module in the target test type and the target test mode, and re-enhancing the strength of the test signal and testing in the step of continuously transmitting the test signal to the communication module within a first preset time period;
if yes, receiving the signal strength and the CN0 value after the positioning is successful;
or the like, or, alternatively,
the target test type is a tracking sensitivity test, and after the step of judging whether the positioning is successful according to the response data returned by the communication module, the method further comprises the following steps:
after the positioning is judged to be successful, ephemeris information is downloaded within a second preset time period;
reducing the signal intensity according to a second preset step, and continuously transmitting the adjusted test signal to the communication module within the first preset time period;
judging whether the communication module is successfully positioned under the adjusted strength of the test signal;
if the positioning is successful, judging whether the operation of successful positioning statistics needs to be executed;
if so, judging whether the positioning success rate meets a first preset threshold value;
if yes, returning to the step of reducing the signal intensity according to a second preset step, and reducing the intensity of the test signal again in the step of continuously transmitting the adjusted test signal to the communication module within the first preset time period and testing;
if not, acquiring the signal strength and the CN0 value after the last positioning success from the signal strength and the CN0 value after the positioning;
or the like, or, alternatively,
the testing type is recapture sensitivity testing, and after the step of judging whether the positioning is successful according to the response data returned by the communication module, the automatic testing process of the GNSS sensitivity of the communication module comprises the following steps:
after the positioning is judged to be successful, ephemeris information is downloaded within a second preset time period;
after the strength of the test signal is reduced to be below a second preset threshold value, controlling the test instrument to stop transmitting the test signal to the communication module within a third preset time period;
controlling the test instrument to continuously transmit a test signal below a second preset threshold value to the communication module within the first preset time period;
judging whether the communication module is successfully positioned under the test signal below a second preset threshold value;
if the positioning is successful, judging whether the operation of successful positioning statistics needs to be executed;
if so, judging whether the positioning success rate meets a first preset threshold value;
if not, returning to the step of controlling the test instrument to continuously transmit the test signal below a second preset threshold value to the communication module within the first preset time period, and re-enhancing the strength of the signal strength and testing the signal strength;
if yes, receiving the signal strength and CN0 value after positioning is successful.
3. The method of claim 2, wherein the target testing mode comprises a single positioning mode and a combined mode, wherein the single positioning mode comprises GPS, GLONASS or BD, and wherein the combined mode is a combination of at least two of GPS, GLONASS and BD.
4. The method according to claim 2, wherein the operation of performing positioning success statistics comprises the operations of obtaining cycle count, total number of single tests, cycle failure stop count, and single expected success count;
and/or;
and when the target test type is a tracking sensitivity test, increasing the numerical value of the second preset step under the signal intensity of-130 dB to-140 dBm.
5. An automated testing system for communication module GNSS sensitivity, the automated testing system comprising:
the device comprises a presetting module, a communication module and a control module, wherein the presetting module is used for presetting configuration parameters of the GNSS sensitivity automatic test process of the communication modules with different test types;
the acquisition module is used for acquiring the setting information of a user;
the configuration module is used for configuring the test instrument according to the setting information; wherein the setting information comprises a target test type and a target test mode;
the execution module is used for executing the communication module GNSS sensitivity automatic test flow corresponding to the target test type through the setting information; the execution module comprises:
the first control unit is used for controlling the test instrument to continuously transmit a test signal to the communication module within a first preset time period under the target test type and the target test mode;
and the positioning success judging unit is used for judging whether the positioning is successful according to the response data returned by the communication module.
6. The automated communication module GNSS sensitivity testing system according to claim 5, wherein the target test type is a cold start sensitivity test, the executing module further comprises:
the cold start instruction sending unit is used for sending a cold start instruction to the communication module so as to eliminate original ephemeris information in the communication module;
if the positioning is successful, calling a first judgment unit;
the first judging unit is used for judging whether the operation of positioning success statistics needs to be executed or not; if necessary, calling a second judgment unit;
the second judging unit is used for judging whether the positioning success rate meets a first preset threshold value; if the signal strength does not meet the requirement, calling the first control unit to re-enhance the signal strength and testing; if yes, calling a first signal strength receiving unit of the signal;
the first signal strength receiving unit is used for receiving the signal strength and the CN0 value after the positioning is successful;
or the like, or, alternatively,
the target test type is a tracking sensitivity test, and the execution module further includes:
after the positioning is judged to be successful, calling an ephemeris information downloading unit;
the ephemeris information downloading unit is used for downloading ephemeris information in a second preset time period;
the second control unit is used for reducing the signal intensity according to a second preset step and continuously transmitting the adjusted test signal to the communication module within the first preset time period;
a third judging unit, configured to judge whether the communication module is successfully positioned under the adjusted strength of the test signal, and if the communication module is successfully positioned, invoke the first judging unit, where the first judging unit is configured to judge whether an operation of successful positioning statistics needs to be performed; if necessary, calling a second judgment unit; the second judging unit is used for judging whether the positioning success rate meets a first preset threshold value;
if so, calling the second control unit to reduce the strength of the test signal again and testing;
if not, calling a second signal strength receiving unit;
the second signal strength receiving unit is used for acquiring the signal strength and the CN0 value after the last positioning is successful from the signal strength and the CN0 value after the positioning;
or the like, or, alternatively,
the test type is a recapture sensitivity test, and the execution module further comprises:
after the positioning is judged to be successful, calling an ephemeris information downloading unit;
the ephemeris information downloading unit is used for downloading ephemeris information in a second preset time period;
the third control unit is used for controlling the test instrument to stop transmitting the test signal to the communication module within a third preset time period after the strength of the test signal is reduced to be below a second preset threshold;
the fourth control unit is used for controlling the test instrument to continuously transmit the test signal below a second preset threshold value to the communication module within the first preset time period;
the fourth judging unit is used for judging whether the communication module is successfully positioned under the test signal below a second preset threshold value; if the positioning is successful, calling a first judging unit, wherein the first judging unit is used for judging whether the operation of successful positioning statistics needs to be executed or not; if necessary, calling a second judgment unit; the second judging unit is used for judging whether the positioning success rate meets a first preset threshold value;
if not, calling a fourth control unit to strengthen the signal intensity again and testing;
if yes, calling a first signal strength receiving unit;
the first signal strength receiving unit is used for receiving the signal strength and the CN0 value after the positioning is successful.
7. The system of claim 6, wherein the target testing mode comprises a single positioning mode and a combined mode, wherein the single positioning mode comprises GPS, GLONASS or BD, and wherein the combined mode is a combination of at least two of GPS, GLONASS and BD.
8. The system according to claim 6, wherein the operations for performing positioning success statistics comprise operations for acquiring cycle count, total number of single tests, cycle failure stop count, and single expected success count;
and/or;
and when the target test type is a tracking sensitivity test, increasing the numerical value of the second preset step under the signal intensity of-130 dB to-140 dBm.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor, when executing the computer program, implements the method for automated testing of communication module GNSS sensitivity according to any of claims 1-4.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for automated testing of sensitivity of a communication module GNSS according to any of claims 1 to 4.
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