CN213426174U - System for vehicle-mounted intelligent terminal complete machine production test - Google Patents
System for vehicle-mounted intelligent terminal complete machine production test Download PDFInfo
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- CN213426174U CN213426174U CN202023050226.2U CN202023050226U CN213426174U CN 213426174 U CN213426174 U CN 213426174U CN 202023050226 U CN202023050226 U CN 202023050226U CN 213426174 U CN213426174 U CN 213426174U
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Abstract
The utility model discloses a system of on-vehicle intelligent terminal complete machine production test, this system includes: the test fixture receives a test signal from an external antenna through a first terminal of an antenna interface of the intelligent terminal and sends the test signal to the power divider; the power divider divides the test signal received from the test fixture into a first test signal and a second test signal, and respectively sends the first test signal and the second test signal; the frequency spectrograph receives a first test signal from the power divider and detects first signal intensity of the first test signal; the test processor respectively reads first signal strength detected by the frequency spectrograph and second signal strength of a second test signal received by the wireless communication module through the second terminal of the antenna interface. The utility model discloses separately verify wireless communication module and antenna, not only when communication performance is unusual, can confirm unusual position fast, through the reference value that the frequency spectrograph read moreover with predetermine the introduction of tolerable error, improve wireless communication module's test reliability.
Description
Technical Field
The utility model relates to a vehicle-mounted intelligent terminal field mainly relates to a system of vehicle-mounted intelligent terminal complete machine production test.
Background
Along with the rise in the car networking market, more and more on-vehicle intelligent terminal is arranged in the car networking, on-vehicle intelligent terminal generally includes the radio communication module at radio communication transmission device, antenna interface and antenna triplex, above-mentioned triplex all can weld or paster to a PCB, because the complicated electromagnetic environment in the car and the metal construction of automobile body itself can bring the influence of a lot of uncertainties to on-vehicle intelligent terminal's wireless transmission performance, on-vehicle intelligent terminal adopts external antenna's mode more at present.
At present, the wireless communication modules in the vehicle-mounted intelligent terminal mostly adopt mature patch-type modules, the wireless performance of the wireless communication modules can be changed after the wireless communication modules are mounted on a PCB of the intelligent terminal, and therefore the vehicle-mounted intelligent terminal needs to be subjected to production testing in order to ensure the wireless transmission performance of the vehicle-mounted intelligent terminal. The existing production test scheme for the wireless performance of the vehicle-mounted intelligent terminal mainly comprises the steps of sending a fixed-strength signal by using a communication test instrument after an external antenna is assembled, or reading the strength of a received signal by using a software command under the condition of signal coverage of the existing operator base station, and judging whether the wireless performance of the vehicle-mounted intelligent terminal is normal or not according to the received signal strength.
Above-mentioned current production test scheme, adopt the equipment back complete machine to verify wireless performance through wireless communication signal intensity whether normal, because received signal's intensity probably receives the environment, the antenna, factor influences such as antenna direction and antenna interface equipment, whether the affirmation that leads to received signal's intensity at normal scope can be wider, even if the antenna, bad in the error range has appeared in arbitrary part in antenna interface and the wireless communication module, current production test scheme is that can not detect, thereby lead to the wireless performance of intelligent terminal complete machine to be the existence risk, reduce the reliability of production test.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that whether error band is wider than when normally confirming at received signal's intensity in current production test scheme, it can not detect out in antenna, antenna interface and the wireless communication module which part has appeared the bad in the error band to the wireless performance that leads to the intelligent terminal complete machine is that there is the risk, reduces the reliability of production test.
In order to solve the technical problem, the utility model provides a technical scheme is for providing a system of vehicle intelligent terminal complete machine production test, include:
the test fixture is used for receiving a test signal from an external antenna through a first terminal of an antenna interface of the intelligent terminal and sending the test signal to the power divider;
the power divider is used for dividing the test signal received from the test fixture into a first test signal and a second test signal and respectively sending the first test signal and the second test signal;
a frequency spectrograph, configured to receive the first test signal from the power divider and detect a first signal strength of the first test signal;
and the test processor is used for respectively reading the first signal strength detected by the frequency spectrograph and receiving the second signal strength of the second test signal through the wireless communication module at the second terminal of the antenna interface.
In the above system, the test processor further comprises:
and if the absolute value of the first difference value is greater than the tolerance error, the wireless communication module is judged to be abnormal.
In the system, the test processor reads the first signal strength detected by the spectrometer through an SCPI command.
In the system, the test processor is in communication connection with the wireless communication module of the intelligent terminal to be tested in a serial port mode.
In the above system, the test fixture includes a radio frequency terminal; the radio frequency terminal comprises a first interface and a second interface matched with the first terminal and the second terminal; the first terminal and the second terminal can be inserted into the first interface and the second interface respectively, so that the antenna and the wireless communication module can be detachably connected.
In the system, the test fixture further comprises a mounting groove for mounting the intelligent terminal; the radio frequency terminal and the power divider are arranged on a mounting groove, and a third interface for connecting the power divider and the frequency spectrograph is arranged on the mounting groove.
In the system, the mounting groove is also provided with a plug and a power switch which are matched with the power interface of the intelligent terminal;
after the intelligent terminal is installed in the installation groove, the power interface is connected with the plug, and the intelligent terminal is controlled to be powered on and powered off by closing and opening the power switch.
In the system, the mounting groove is also provided with a first serial port for connecting the line communication module and the test processor; the intelligent terminal is installed at the back line communication module of the mounting groove and connected with the test processor through a first serial port.
The utility model discloses divide intelligent terminal complete machine test system into two parts at the antenna kneck and test, separately verify wireless communication module and antenna, when communication performance is unusual, can confirm unusual position fast; when the wireless communication module is tested, the reference value read by the frequency spectrograph and the introduction of the preset tolerable error greatly reduce the error range of the received signal strength of the wireless communication module, thereby improving the test reliability of the wireless communication module; on the other hand, when the external antenna is tested, under the condition that the test system is not changed, the performance test of the antenna is realized through the standard antenna, so that the antenna batch test system is not only suitable for the antenna batch test, but also can obtain higher accuracy in a production line working environment.
Drawings
Fig. 1 is a block diagram of a system for overall production testing of a vehicle-mounted intelligent terminal according to an embodiment of the present invention;
fig. 2 is a flow chart of the wireless communication module test according to the embodiment of the present invention;
fig. 3 is a flowchart of the external antenna test according to the embodiment of the present invention.
Detailed Description
The utility model discloses a system for vehicle-mounted intelligent terminal complete machine production test, this paper content can be referred to the technical staff in the field, and the technological parameter that suitably improves realizes. It is expressly noted that all such similar substitutes and modifications apparent to those skilled in the art are deemed to be included in the invention and it is apparent to those skilled in the art that the inventive technique can be practiced and applied by modifying or appropriately combining the teachings herein without departing from the spirit and scope of the invention.
In the present invention, unless otherwise defined, scientific and technical terms used herein have the meanings as commonly understood by one of ordinary skill in the art.
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.
As shown in FIG. 1, the embodiment of the utility model provides a system for vehicle-mounted intelligent terminal complete machine production test, including test fixture 10, merit divide ware 20, frequency spectrograph 30 and test processor 40.
The test fixture 10 receives a test signal from an external antenna 50 through a first terminal of an antenna interface of the intelligent terminal, and sends the test signal to the power divider 20; the test signal is a fixed strength signal sent by a communication test instrument or a signal transmitted by an operator base station.
The power divider 20 equally divides the test signal received from the test fixture into two paths, i.e., a first test signal and a second test signal, and respectively sends the first test signal and the second test signal to the frequency spectrograph 30 and the wireless communication module 60 of the intelligent terminal, and the wireless communication module 60 receives the second test signal from the wireless communication module 60 through the second terminal of the antenna interface.
The spectrometer 30 detects a first signal strength of the first test signal.
The test processor 40 is in communication connection with the wireless communication module 60 of the intelligent terminal to be tested in a serial port mode; respectively reading the second signal strength received by the wireless communication module 60 and the first signal strength detected by the spectrometer 30, and subtracting the first signal strength and the second signal strength to obtain a first difference value, if the absolute value of the first difference value is less than or equal to the tolerance error (determined according to the precision requirement), the wireless communication module 60 is normal, if the absolute value of the first difference value is greater than the tolerance error, the wireless communication module is abnormal, the normal wireless communication module 60 is used for detecting the first signal strength of the standard antenna through the spectrometer 30, then the standard antenna is replaced by the antenna to be detected, the first signal strength of the antenna to be detected is detected through the spectrometer 30, if the first signal strength is consistent with the first signal strength of the standard antenna (the difference between the first signal strength and the standard antenna is less than or equal to the tolerance error of the antenna), the antenna to be detected is normal, otherwise, the; in the present embodiment, the test processor 40 reads the first signal strength detected by the spectrometer 30 through the SCPI command.
The embodiment of the utility model provides a divide into two parts at the antenna interface with the complete machine test and test, separately verify wireless communication module and antenna, when communication performance is unusual, can confirm unusual position fast; the first part divides the test signal received by the antenna into two paths at the antenna interface, measures the first signal intensity of one path by a frequency spectrograph, takes the first signal intensity as the reference value of the normal wireless communication module to receive the signal intensity, and sends the other path of test signal to the wireless communication module, at this time, the main reason for the difference between the received signal intensity of the wireless communication module and the first signal intensity comes from the wireless communication module, the first terminal of the antenna interface and the radio frequency circuit (the circuit generally comprises a capacitance-resistance sensing device and a radio frequency wire) between the first terminal of the antenna interface and the wireless communication module, when the absolute value of the difference between the received signal intensity of the wireless communication module and the first signal intensity is less than or equal to the tolerable error, the wireless performance of the first part is normal, and the error range of the received signal intensity of the wireless communication module is greatly reduced by introducing the reference value read by the frequency spectrograph and the preset tolerable error, thereby improving the test reliability of the wireless communication module; and the second part is used for realizing the performance test of the antenna through a standard antenna under the condition that the test system is not changed, and when the antenna to be tested is replaced, if the signal intensity value measured by the frequency spectrograph is always equal to that when the standard antenna is installed, the antenna to be tested is normal, so that the antenna to be tested is not only suitable for batch test of the antenna, but also has high test accuracy.
Because the vehicle itself and the driving road condition conditions, and the vehicle may have irregular vibration conditions during driving, the connection stability of the vehicle-mounted intelligent terminal for connecting the external antenna 50 and the antenna interface of the wireless communication module 60 needs to be considered, the existing reliable connection for the external antenna 50 and the wireless communication module 60 is usually a vehicle-scale Fakra interface, the Fakra interface has two terminals with communication functions, the first terminal is fixedly connected with the antenna 50, the second terminal is fixedly connected with the wireless communication module 60, the first terminal and the second terminal are detachably connected through a fastening type fixing component, although the fastening type structure of the Fakra interface has high reliability, the assembly and disassembly of the Fakra interface are time-consuming, the first terminal and/or the second terminal can be damaged due to improper force application, and the antenna 50 and/or the wireless communication module 60 fixedly connected therewith can be scrapped, not only cause and test artifical dismouting meeting inefficiency at production line, cause the wasting of resources moreover. In order to solve the problem, in the embodiment, the test fixture 10 includes a radio frequency terminal, the radio frequency terminal includes a first interface and a second interface matched with the first terminal and the second terminal, the first terminal and the second terminal can be respectively inserted into the first interface and the second interface to realize detachable connection, in the test stage, the Fakra interface is not assembled, only the first terminal is inserted into the first interface, the second terminal is inserted into the second interface to realize connection of the antenna 50 and the line communication module 60, and the problems of low efficiency and damage caused by assembling and disassembling the Fakra interface in the production test stage are avoided.
In this embodiment, the test fixture 10 further includes a mounting groove for mounting the intelligent terminal, and the rf terminal and the power divider are disposed on the mounting groove. In this embodiment, be equipped with the plug that matches with intelligent terminal power source on the mounting groove, be equipped with switch on the mounting groove, intelligent terminal installs behind the mounting groove, and power source and plug switch-on make things convenient for the tester operation through switch control intelligent terminal's circular telegram and outage. In other embodiments, except for being equipped with the third interface that is used for connecting the frequency spectrograph 30 on the mounting groove, still be equipped with the first serial ports that are used for connecting wire communication module 60 and test processor 40, intelligent terminal installs at the mounting groove back line communication module 60 and test processor 40 and passes through first serial ports and connect to reduce tester's manual work volume, when examining in batches, only need to change intelligent terminal and intelligent terminal's on the mounting groove antenna and can realize the test, improve production efficiency of software testing.
Utilize the embodiment of the utility model provides a system of vehicle intelligent terminal complete machine production test realizes vehicle intelligent terminal's production test's method, include:
wireless communication module testing (as shown in fig. 2):
step A100, dividing a test signal from an antenna into a first test signal and a second test signal at a first terminal of an antenna interface (through a power divider), and sending the second test signal to a wireless communication module through a second terminal of the antenna interface;
a200, detecting first signal intensity of a first test signal by using a frequency spectrograph;
step A300, reading a second signal strength of a second test signal received by the wireless communication module and a first signal strength detected by the frequency spectrograph;
step A400, comparing the first signal strength with the second signal strength, wherein the wireless communication module is normal if the absolute value of the difference between the first signal strength and the second signal strength is less than or equal to the tolerance error, and the wireless communication module is abnormal if the absolute value of the difference between the first signal strength and the second signal strength is greater than the tolerance error.
External antenna test (as shown in fig. 3):
step B100, when the wireless communication module tests that the wire communication module is normal, the antenna is replaced by a standard antenna (the antenna is tested to be normal in the environment meeting the test requirement);
step B200, reading the first signal intensity of the frequency spectrograph and recording the first signal intensity as a first value;
step B300, after the standard antenna is replaced by the antenna to be tested, reading the first signal intensity of the frequency spectrograph;
and step B400, comparing the first signal strength with the first value, if the difference between the first signal strength and the first value is less than or equal to the tolerance error of the antenna, the antenna to be tested is normal, otherwise, the antenna to be tested is not normal. In this embodiment, the comparison and the test result are both obtained by a test processor, in this embodiment, the test processor is a test computer, and the test result can be displayed by voice or a display as a tester. In this embodiment, step B200, step B300, and step B400 may be implemented by a test processor through a program.
In step a100 of this embodiment, the first terminal of the antenna interface and the second terminal of the antenna interface are not connected through a fixing component during testing, but are connected through a test fixture, and the test fixture receives a test signal from an external antenna through the first terminal of the antenna interface of the intelligent terminal and sends the test signal to the power divider; the power divider equally divides a test signal received from the test fixture into a first test signal and a second test signal, and respectively sends the first test signal and the second test signal to the frequency spectrograph and the wireless communication module of the intelligent terminal.
The embodiment of the utility model provides a divide into two parts at the antenna interface with the complete machine test and test, separately verify wireless communication module and antenna, when communication performance is unusual, can confirm unusual position fast; the wireless communication module is used for testing, a test signal received by an antenna is divided into two paths at an antenna interface, one path of first signal intensity is measured by a frequency spectrograph, the first signal intensity is taken as a reference value of the normal wireless communication module for receiving the signal intensity, the other path of test signal is sent to the wireless communication module, when the absolute value of the difference between the signal intensity received by the wireless communication module and the first signal intensity is smaller than or equal to a tolerable error, the wireless performance is normal, and the error range of the signal intensity received by the wireless communication module is greatly reduced by introducing the reference value read by the frequency spectrograph and the preset tolerable error, so that the test reliability of the wireless communication module is improved; when the external antenna is used for testing, under the condition that a testing system is not changed, the performance test of the antenna is realized through the standard antenna, when the antenna to be tested is replaced, if the signal strength value measured by the frequency spectrograph is always consistent with that when the standard antenna is installed, the antenna to be tested is normal, the antenna to be tested is not only suitable for batch testing of the antenna, but also high in testing accuracy.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a system for vehicle-mounted intelligent terminal complete machine production test which characterized in that includes:
the test fixture is used for receiving a test signal from an external antenna through a first terminal of an antenna interface of the intelligent terminal and sending the test signal;
the power divider is used for dividing the test signal received from the test fixture into a first test signal and a second test signal and respectively sending the first test signal and the second test signal;
a frequency spectrograph, configured to receive the first test signal from the power divider and detect a first signal strength of the first test signal;
and the test processor is used for respectively reading the first signal strength detected by the frequency spectrograph and receiving the second signal strength of the second test signal through the wireless communication module at the second terminal of the antenna interface.
2. The system of claim 1, wherein the test processor further comprises:
and if the absolute value of the first difference value is greater than the tolerance error, the wireless communication module is judged to be abnormal.
3. The system of claim 1, wherein the test processor reads the first signal strength detected by the spectrometer via an SCPI command.
4. The system of claim 1, wherein the test processor is in communication connection with the wireless communication module of the intelligent terminal to be tested in a serial port manner.
5. The system of claim 1, wherein the test fixture comprises a radio frequency terminal; the radio frequency terminal comprises a first interface and a second interface matched with the first terminal and the second terminal; the first terminal and the second terminal can be inserted into the first interface and the second interface respectively, so that the antenna and the wireless communication module can be detachably connected.
6. The system of claim 5, wherein the test fixture further comprises a mounting slot for mounting a smart terminal; the radio frequency terminal and the power divider are arranged on a mounting groove, and a third interface for connecting the power divider and the frequency spectrograph is arranged on the mounting groove.
7. The system of claim 6, wherein the mounting groove is further provided with a plug and a power switch which are matched with the power interface of the intelligent terminal;
after the intelligent terminal is installed in the installation groove, the power interface is connected with the plug, and the intelligent terminal is controlled to be powered on and powered off by closing and opening the power switch.
8. The system of claim 6, wherein the mounting slot is further provided with a first serial port for connecting the line communication module and the test processor; the intelligent terminal is installed at the back line communication module of the mounting groove and connected with the test processor through a first serial port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202023050226.2U CN213426174U (en) | 2020-12-17 | 2020-12-17 | System for vehicle-mounted intelligent terminal complete machine production test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023050226.2U CN213426174U (en) | 2020-12-17 | 2020-12-17 | System for vehicle-mounted intelligent terminal complete machine production test |
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| CN213426174U true CN213426174U (en) | 2021-06-11 |
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| CN202023050226.2U Active CN213426174U (en) | 2020-12-17 | 2020-12-17 | System for vehicle-mounted intelligent terminal complete machine production test |
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