CN214702294U - Automatic test system for airborne navigation receiving excitation module - Google Patents
Automatic test system for airborne navigation receiving excitation module Download PDFInfo
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- CN214702294U CN214702294U CN202121255055.9U CN202121255055U CN214702294U CN 214702294 U CN214702294 U CN 214702294U CN 202121255055 U CN202121255055 U CN 202121255055U CN 214702294 U CN214702294 U CN 214702294U
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Abstract
The invention provides an automatic test system of an airborne navigation receiving excitation module, which is characterized in that a control computer controls a general measuring instrument to set each test parameter, switches a test access of a program control radio frequency network to a corresponding access while setting the instrument parameter, sends different test states to the program control radio frequency network, and controls a tested module to switch modes; and after the setting is finished, analyzing the signals acquired by the universal measuring instrument to obtain a final measuring result and finally generating a test report. The invention has light structure, omits the complicated connection process of general instruments and improves the calibration speed; because the cable between the module has been fixed for measuring result is more accurate and have better uniformity, and effectual shortening test time, through the programme-controlled back of automatic test software, measuring result record and data processing are gone on by the procedure is automatic, reduce the maloperation, can reduce test time greatly, improve work efficiency.
Description
Technical Field
The invention relates to the technical field of instrument measurement, in particular to an automatic test system which can be used for the automatic test of an airborne navigation receiving excitation module.
Background
The receiving and exciting module is an important component of an aircraft avionics system and is used for solving the receiving and exciting functions, the interface control function and the state detection function of a related function system. The indexes of the electrical parameters of the receiving excitation module are many, such as noise parameters, frequency spectrum parameters, delay parameters, phase noise parameters, amplification characteristics and the like, most of the indexes only need to be tested at normal temperature and are completed by a mature and universal method, but the parameters such as channel logarithmic amplification characteristics, channel linear amplification characteristics and excitation signal output levels need to be tested in a high-temperature and low-temperature environment, and the indexes are very high and are difficult to measure.
Therefore, the test system needs to be automatically designed, the calibration cost and the calibration difficulty are reduced, and the test efficiency is improved.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an automatic test system for an airborne navigation receiving excitation module, which is mainly used for testing parameters such as a channel logarithmic amplification characteristic, a channel linear amplification characteristic and an excitation signal output level of the airborne navigation receiving excitation module, and can complete high and low temperature tests of 6 modules at one time. The system integrates the testing function, so that the high and low temperature test of the airborne navigation receiving and exciting module can be quickly and effectively automatically tested, and all parameters of the system can be finally traced to the national standard.
The technical scheme adopted by the invention for solving the technical problems is as follows:
an automatic test system of an airborne navigation receiving excitation module comprises a control computer (1), a universal measuring instrument (2), a program-controlled radio frequency network (3) and a power supply system (4), wherein the control computer (1) controls the universal measuring instrument (2) to set various test parameters, switches a test access of the program-controlled radio frequency network (3) to a corresponding access while setting the instrument parameters, sends different test states to the program-controlled radio frequency network (3), and controls a tested module to switch modes; after the setting is finished, analyzing signals acquired by the universal measuring instrument (2) to obtain a final measuring result and finally generating a test report; and the power supply system (4) provides a power supply for the tested module.
The general measuring instrument (2) comprises two signal sources and two power meters, the signal sources and the power meters are respectively connected to the program-controlled radio frequency network (3) to form two different paths, the general measuring instrument (2) is automatically set to measure parameters of different modules in the automatic testing process, and a testing result is sent to the control computer (1) after the testing is finished.
The program control radio frequency network (3) realizes a radio frequency measurement channel, has good repeatability and stability, and can automatically switch channels according to a test flow; meanwhile, the state control of the module to be tested can be completed, and the receiving and transmitting signals of the module to be tested are connected to the program control radio frequency network (3); the program control radio frequency network (3) comprises a module control unit and a switch switching unit, and is used for completing state control of a plurality of tested modules and switching various microwave signals according to the requirements of system test. Taking the measurement and test of 6 radio frequency front ends as an example, if expansion is needed, the measurement and test can be completed only by adding a microwave switch and changing a small amount of control programs. The signal generator A is an L-band signal generator and provides 960 MHz-1224 MHz signals, and the signal generator B provides 100MHz synchronous signals; and the industrial personal computer controls different switch units to complete the test of all the channels through the combination of different sequences.
The switch switching unit comprises a switch SA, a switch SB and a switch SC, the switch SA and the switch SB are respectively connected to two channels of the universal measuring instrument (2), the output ends of the switch SA and the switch SB are respectively connected with the tested module, the output end of the tested module completes a radio frequency measuring channel through the switch SC, and free switching is realized.
As shown in fig. 2, a1 to a6 of SA2 connect the receiving lanes of test station 1 to test station 3 of the rack, and a7 to a12 of SA3 connect the receiving lanes of test station 4 to test station 6 of the rack. When the measuring device is calibrated, if the channel calibration needs to be performed on the test station 1 of the test rack, the pass connection of the test station 1 can be completed only by operating the worker control machine to control the microwave network unit SA, switching the switch SA1 to the switch SA2, and switching the switch SA2 to the port a 1. Through the state setting of the group of switches, the output port of the signal generator A can be connected with any one of the 12 ports of the test rack, so that the free switching of the signal paths of the signal generator A and the 12 test stations can be completed.
Similarly, through the state setting of the switch SB, the connection of any one of 6 ports of the output port of the signal generator B and the test rack is ensured, and the free switching of the signal paths of the signal generator B and the 6 test stations can be completed.
Through the state setting of the switch SC, the input port of the spectrum analyzer is connected with any one of 18 output ports of the test rack, and the free switching of the spectrum analyzer and 18 test station signal paths can be completed.
When module testing is carried out, the signal generator A provides a continuous wave radio frequency input signal for a module to be tested, and the signal generator B provides a reference frequency signal for the module to be tested; the power meter A is used as a monitoring means to ensure that the radio frequency output amplitude of the signal generator A is accurate, and the power meter B is used as test equipment for the output of the tested module to ensure that the intermediate frequency output amplitude of the tested module is accurate; according to the difference of the tested modules, the channel of the program control radio frequency network (3) is switched to the radio frequency input of the tested module to provide radio frequency signals, and the channel of the program control radio frequency network (3) is switched to the intermediate frequency output port of the tested module to select the power meter for parameter testing.
The invention has the beneficial effects that:
1. the utility model adopts the automatic control technology to build a set of automatic test system, the structure is light, the complicated connection process of general instruments is saved, and the calibration speed is improved; because the cables between the modules are fixed, the measurement result is more accurate and has better consistency.
2. The conventional manual testing has long time and high error rate, can effectively shorten the testing time by the development and realization of a radio frequency network, and can reduce the misoperation because the measurement result recording and the data processing are automatically carried out by programs after the program control of automatic testing software. Therefore, the system can greatly shorten the testing time and improve the working efficiency.
Drawings
FIG. 1 is a schematic diagram of the testing of the automated test system of the present invention.
Fig. 2 is a structural view of a switch switching unit of the present invention.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
An object of the utility model is to the not enough of above-mentioned prior art, provide an airborne navigation receives automatic test system of excitation module, this system mainly used airborne navigation receives the test of these parameters of passageway logarithm amplification characteristic, the linear amplification characteristic of passageway and excitation signal output level of excitation module, through this system, can once only accomplish the high low temperature test of 6 modules. The system integrates the testing function, so that the high and low temperature test of the airborne navigation receiving and exciting module can be quickly and effectively automatically tested, and all parameters of the system can be finally traced to the national standard.
In order to achieve the above object, the automated test system includes: the system comprises a control computer (1), a universal measuring instrument (2), a program-controlled radio frequency network (3) and a power supply system (4).
A control computer (1) in the automatic test system device controls a universal measuring instrument (2) to set each test parameter, switches a test access of a program control radio frequency network (3) to a corresponding access while setting the instrument parameter, and sends different test states to the program control radio frequency network (3) to control a module to be tested to switch modes. And after the setting is finished, analyzing the signals acquired by the universal measuring instrument (2) to obtain a final measuring result and finally generating a test report.
The universal measuring instrument in the automatic test system comprises two signal sources and two power meters. And in the automatic test process, the setting of each instrument is automatically carried out to measure the parameters of different modules. After the test is completed, the test result is sent to the control computer (1).
The program-controlled radio frequency network (3) in the automatic test system has the function of realizing a radio frequency measurement channel, has good repeatability and stability, and can automatically switch channels according to a test flow; meanwhile, the state control of the module to be tested can be completed, and the receiving and transmitting signals of the module to be tested are connected to the program control radio frequency network. The program control radio frequency network consists of a module control unit and a switch switching unit. The main function is to complete the state control of a plurality of tested modules and to complete the switching of various microwave signals according to the requirement of system test. Taking the measurement and test of 6 radio frequency front ends as an example, if expansion is needed, the measurement and test can be completed only by adding a microwave switch and changing a small amount of control programs. The signal generator A is an L-band signal generator and mainly provides signals of 960 MHz-1224 MHz, and the signal generator B provides synchronous signals of 100 MHz. The industrial personal computer can control different switch units, and tests of all the channels can be completed through combination of different orders. A1-A6 of SA2 are connected with receiving channels of stations 1-3 of the rack, and A7-A12 of SA3 are connected with receiving channels of stations 4-6 of the rack. When the measuring device is calibrated, if the channel calibration needs to be performed on the test station 1 of the test rack, the pass connection of the test station 1 can be completed only by operating the worker control machine to control the microwave network unit SA, switching the switch SA1 to the switch SA2, and switching the switch SA2 to the port a 1. By setting the state of the group of switches, the output port of the signal generator A can be ensured to be connected with any one of 12 ports of the test rack, so that the free switching of the signal paths of the signal generator A and 12 test stations can be completed.
Similarly, through the state setting of the switch SB, the connection of any one of 6 ports of the output port of the signal generator B and the test rack can be ensured, and the free switching of the signal paths of the signal generator B and the 6 test stations can be completed.
Through the state setting of the switch SC, the input port of the spectrum analyzer can be ensured to be connected with any one of 18 output ports of the test rack, and the free switching of the spectrum analyzer and 18 test station signal paths can be completed.
The power supply system (4) is responsible for providing power supply for the tested module.
When module testing is carried out, the signal generator A provides a continuous wave radio frequency input signal for a module to be tested, and the signal generator B provides a reference frequency signal for the module; the power meter A is used as a monitoring means to ensure that the radio frequency output amplitude of the signal generator A is accurate, and the power meter B is used as test equipment for the output of the tested module to ensure that the intermediate frequency output amplitude of the tested module is accurate. According to different testing modules, the channel of the program control radio frequency network (3) is switched to the radio frequency input of the tested module to provide radio frequency signals, and the channel of the program control radio frequency network (3) is switched to the intermediate frequency output port of the tested module to select the power meter for parameter testing.
Fig. 1 shows a test schematic diagram of the automatic test system, which is composed of a control computer (1) (automatic test software), a general-purpose measuring instrument (2), a program-controlled radio frequency network (3) and a power supply system (4).
Fig. 2 shows a block diagram of a switching unit of the switch, wherein the switch is responsible for switching the test path.
The above description is only one specific example of the present invention, and it is obvious to those skilled in the art that various modifications and changes in form and detail can be made without departing from the principles of the present invention, but these modifications and changes based on the idea of the present invention are still within the protection scope of the claims of the present invention.
Claims (5)
1. The utility model provides an airborne navigation receives automatic test system of excitation module, includes control computer (1), general measuring instrument (2), programme-controlled radio frequency network (3) and electrical power generating system (4), its characterized in that:
in the automatic test system of the airborne navigation receiving excitation module, the control computer (1) controls the general measuring instrument (2) to set each test parameter, switches the test access of the program-controlled radio frequency network (3) to the corresponding access while setting the instrument parameter, sends different test states to the program-controlled radio frequency network (3), and controls the tested module to switch modes; after the setting is finished, analyzing signals acquired by the universal measuring instrument (2) to obtain a final measuring result and finally generating a test report; and the power supply system (4) provides a power supply for the tested module.
2. The automated test system for airborne navigation reception excitation modules according to claim 1, wherein:
the general measuring instrument (2) comprises two signal sources and two power meters, the signal sources and the power meters are respectively connected to the program-controlled radio frequency network (3) to form two different paths, the general measuring instrument (2) is automatically set to measure parameters of different modules in the automatic testing process, and a testing result is sent to the control computer (1) after the testing is finished.
3. The automated test system for airborne navigation reception excitation modules according to claim 1, wherein:
the program control radio frequency network (3) realizes a radio frequency measurement channel and automatically switches the channel according to a test flow; meanwhile, the state of the module to be tested is controlled, and the receiving and transmitting signals of the module to be tested are connected to the program control radio frequency network (3); the program control radio frequency network (3) comprises a module control unit and a switch switching unit, completes the state control of a plurality of tested modules and the switching of various microwave signals according to the requirement of system test, controls different switch units through an industrial personal computer, and completes the test of all paths through the combination of different sequences.
4. The automated test system for airborne navigation reception excitation module according to claim 3, wherein:
the switch switching unit comprises a switch SA, a switch SB and a switch SC, the switch SA and the switch SB are respectively connected to two channels of the universal measuring instrument (2), the output ends of the switch SA and the switch SB are respectively connected with the tested module, the output end of the tested module completes a radio frequency measuring channel through the switch SC, and free switching is realized.
5. The automated test system for airborne navigation reception excitation modules according to claim 1, wherein:
when module testing is carried out, a signal generator A in the universal measuring instrument (2) provides a continuous wave radio frequency input signal for a module to be tested, and a signal generator B in the universal measuring instrument (2) provides a reference frequency signal for the module to be tested; the power meter A is used as a monitoring means to ensure that the radio frequency output amplitude of the signal generator A is accurate, and the power meter B is used as test equipment for the output of the tested module to ensure that the intermediate frequency output amplitude of the tested module is accurate; according to the difference of the tested modules, the channel of the program control radio frequency network (3) is switched to the radio frequency input of the tested module to provide radio frequency signals, and the channel of the program control radio frequency network (3) is switched to the intermediate frequency output port of the tested module to select the power meter for parameter testing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121255055.9U CN214702294U (en) | 2021-06-05 | 2021-06-05 | Automatic test system for airborne navigation receiving excitation module |
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| CN202121255055.9U CN214702294U (en) | 2021-06-05 | 2021-06-05 | Automatic test system for airborne navigation receiving excitation module |
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| CN214702294U true CN214702294U (en) | 2021-11-12 |
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| CN202121255055.9U Active CN214702294U (en) | 2021-06-05 | 2021-06-05 | Automatic test system for airborne navigation receiving excitation module |
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