CN115248052B - Self-checking system of automatic testing device of airborne VHF navigation system receiver - Google Patents
Self-checking system of automatic testing device of airborne VHF navigation system receiver Download PDFInfo
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- CN115248052B CN115248052B CN202211154668.2A CN202211154668A CN115248052B CN 115248052 B CN115248052 B CN 115248052B CN 202211154668 A CN202211154668 A CN 202211154668A CN 115248052 B CN115248052 B CN 115248052B
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Abstract
The invention discloses a self-checking system of an automatic testing device of an airborne VHF navigation system receiver. The system comprises four test circuits and a control circuit, wherein the four test circuits comprise a test circuit for carrying out self-detection on an ARINC429 card and an industrial personal computer serial port RS 232-1 of an automatic test device of an airborne very high frequency navigation system receiver, a test circuit for carrying out self-detection on a 3802 switch card of the automatic test device of the airborne very high frequency navigation system receiver, a test circuit for carrying out self-detection on a 3801 switch card of the automatic test device of the airborne very high frequency navigation system receiver, and a test circuit for carrying out self-detection on a 3803 switch card of the automatic test device of the airborne very high frequency navigation system receiver and a power supply; and is connected with an iCon1 connector on a resource interface box of the automatic test device through a VPC connector. The automatic testing device is rapidly self-checked, faults are positioned to the board card level, and maintainability is enhanced.
Description
Technical Field
The invention relates to a test technology of an airborne very high frequency navigation system, in particular to a self-checking system of an automatic test device of an airborne very high frequency navigation system receiver.
Background
The automatic testing device (application number 2022102035211) of the airborne VHF navigation system receiver can automatically test the receiver of the airborne VHF navigation system, but because a plurality of circuit board cards are installed in the automatic testing device, particularly 3801 switch cards, 3802 switch cards and 3803 switch cards are easy to break down after long-term use, if the circuit boards are disassembled to carry out fault detection, a large amount of time is consumed, the possibility of damaging the device exists, and no mature solution is available at present.
Disclosure of Invention
The invention aims to perform quick self-checking on an invention patent 'automatic testing device of an airborne VHF navigation system receiver' with application number 2022102035211, and when the 'automatic testing device of the airborne VHF navigation system receiver' has a fault, the fault can be quickly positioned to a board card level by adopting a self-checking system.
The technical scheme adopted by the invention for realizing the purpose is as follows: the self-checking system of the automatic testing device of the airborne VHF navigation system receiver comprises four testing circuits and a control circuit, wherein the four testing circuits comprise: the test circuit is used for carrying out self-test on an ARINC429 card and an industrial personal computer serial port RS232_1 of the automatic test device of the airborne VHF navigation system receiver; a test circuit for self-checking the 3802 switch card of the automatic test device of the airborne VHF navigation system receiver; thirdly, a test circuit for self-checking the 3801 switch card of the automatic test device of the airborne VHF navigation system receiver; fourthly, a test circuit for self-checking the 3803 switch card and the power supply of the automatic test device of the airborne VHF navigation system receiver; the four test circuits are connected with an iCon1 connector on a resource interface box of the automatic test device of the airborne VHF navigation system receiver through a VPC connector; the VPC connector has 168 pins, the 168 pins are divided into two regions of P1A and P1B, each region consists of 6 columns, 14 rows in each column and 84 pins, wherein 6 columns in the P1A region are respectively: columns P1A-A, P1A-B, P1A-C, P1A-D, P1A-E and P1A-F; the 6 columns in the P1B region are: P1B-A, P1B-B, P1B-C, P1B-D, P1B-E, and P1B-F.
The control circuit is connected with a 3803 switch card of the automatic testing device of the airborne VHF navigation system receiver and a testing circuit for self-checking of a power supply through a connector J1.
The self-test system also comprises a digital multimeter of the automatic testing device of the airborne VHF navigation system receiver and a self-test system program of the aviation signal source, wherein the self-test system program is compiled into a DLL file and copied to a test program installation folder of the automatic testing device of the airborne VHF navigation system receiver, the self-test system program is loaded in the test program of the automatic testing device of the airborne VHF navigation system receiver, the digital multimeter and the aviation signal source are internally provided with self-test functions, the self-test system program respectively sends self-test commands to the digital multimeter and the aviation signal source, receives returned self-test results, and then outputs the test results together with the test results of the four test circuit test items.
The invention has the advantages that:
1. the power supply and the digital multimeter in the automatic testing device of the airborne VHF navigation system receiver are utilized as much as possible, so that the cost is reduced.
2. The specification of the system connector is consistent with that of the iCon1 connector on the resource interface box in the automatic testing device of the airborne VHF navigation system receiver, the system connector is connected to the iCon1 connector, self-checking can be carried out on the automatic testing device of the airborne VHF navigation system receiver, and circuit boards or components in the automatic testing device of the airborne VHF navigation system receiver do not need to be detached.
3. The automatic testing device for the airborne VHF navigation system receiver can be rapidly self-tested, and the fault is positioned to the board card level, so that the fault positioning time of the automatic testing device for the airborne VHF navigation system receiver can be reduced, and the maintainability is enhanced.
Drawings
FIG. 1 is a schematic block diagram of the connection of the present invention;
FIG. 2 is a circuit diagram of ARINC429 card test and industrial personal computer serial port RS232_1 test in FIG. 1;
FIG. 3 is a circuit diagram of the 3802 switch card test circuit of FIG. 1;
FIG. 4 is a circuit diagram of the 3801 switch card test circuit of FIG. 1;
FIG. 5 is a circuit diagram of the 3803 switch card and power test circuit of FIG. 1;
FIG. 6 is a schematic diagram of the control circuit of FIG. 1;
FIG. 7 is a flow chart of the operation of the present invention;
fig. 8 is a schematic diagram of a 3803 switch card basic structure.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, the present system includes four test circuits and a control circuit, the four test circuits: the test circuit is used for carrying out self-test on an ARINC429 card and an industrial personal computer serial port RS232_1 of the automatic test device of the airborne VHF navigation system receiver; the test circuit is used for carrying out self-checking on a 3802 switch card of the automatic test device of the airborne VHF navigation system receiver; thirdly, a test circuit for self-checking the 3801 switch card of the automatic test device of the airborne VHF navigation system receiver; fourthly, a test circuit for self-checking the 3803 switch card and the power supply of the automatic test device of the airborne VHF navigation system receiver; the four test circuits are connected with an iCon1 connector on a resource interface box of the automatic test device of the airborne VHF navigation system receiver through a VPC connector; the VPC connector has 168 pins, the 168 pins are divided into two regions of P1A and P1B, each region consists of 6 columns, 14 rows in each column and 84 pins, wherein 6 columns in the P1A region are respectively: columns P1A-A, P1A-B, P1A-C, P1A-D, P1A-E and P1A-F; the 6 columns in the P1B region are: P1B-A, P1B-B, P1B-C, P1B-D, P1B-E, and P1B-F.
The control circuit of the system is connected with a 3803 switch card of the automatic testing device of the airborne VHF navigation system receiver and a testing circuit for self-checking of a power supply through a connector J1.
The system also comprises a digital multimeter of the automatic testing device of the airborne VHF navigation system receiver and a self-checking system program of the aviation signal source, wherein the self-checking system program is compiled into a DLL file and copied to a testing program installation folder of the automatic testing device of the airborne VHF navigation system receiver, the self-checking system program is loaded in the testing program of the automatic testing device of the airborne VHF navigation system receiver, self-checking functions are arranged in the digital multimeter and the aviation signal source, the self-checking system program respectively sends self-checking test commands to the digital multimeter and the aviation signal source, receives returned self-checking test results and then outputs the test results of four test circuit test items together.
As shown in fig. 2, the connection relationship of the test circuit for self-testing the ARINC429 card and the industrial personal computer serial port RS232_1 of the automatic test device of the airborne vhf navigation system receiver is as follows: the P1A-1A and the P1A-2C of the VPC connector are connected for testing ARINC429-1#A signals; the P1A-1B and the P1A-2D of the VPC connector are connected for testing ARINC429-1#B signals; the P1A-1C and the P1A-2E of the VPC connector are connected for testing ARINC429-2#A signals; the P1A-1D and the P1A-2F of the VPC connector are connected for testing ARINC429-2#B signals; the P1A-1E and the P1A-3A of the VPC connector are connected for testing ARINC429-3#A signals; the P1A-1F and the P1A-3B of the VPC connector are connected for testing ARINC429-3#B signals; the P1A-2A and the P1A-3C of the VPC connector are connected for testing ARINC429-4#A signals; the P1A-2B and the P1A-3D of the VPC connector are connected for testing ARINC429-4#B signals; P1A-3F and P1A-4F of the VPC connector are connected for testing a 1-channel signal of an industrial personal computer serial port RS 232.
The ARINC429 card test, the industrial personal computer serial port RS232_1 test principle and the test flow are described as follows:
the ARINC429 card has four groups, each group comprises two sending ports and two receiving ports, the total number of the eight sending ports and the eight sending ports are eight, the sending ports and the receiving ports are connected in pairs during testing, specific characters are sent through the sending ports, if the same content is received at the corresponding receiving ports, the testing is passed, and otherwise, the testing is not passed.
The test principle and the test process of the serial port RS232_1 of the industrial personal computer are the same as those of an ARINC429 card.
As shown in fig. 3, the connection relationship of the test circuit for self-testing the 3802 switch card of the automatic test device of the airborne vhf navigation system receiver is as follows: eight pins P1A-5A, P A-5B, P A-5C, P A-5D, P A-5E, P A-10A, P A-10B, P A-10C of the VPC connector are respectively connected in series with a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7 and a resistor R8 and then are commonly connected to pins P1A-10E of the VPC connector; P1A-6A, P A-7A, P A-8A, P A-9A, P A-6B, P A-7B, P A-8B, P A-9B, P A-6B, P A-7B, P A-8B, P1A-9B, P A-6B, P A-7B, P A-8 6258 zxft 621A-9B, P A-6B, P A-7B, P1A-8B, P A-9B, P1A-11B, P1A-12B, P A-13B, P1A-14B, P A-11B, P1A-12B, P A-13B, P A-14C are commonly connected to the P1A-10F pins of the VPC connector.
3802 switch card test principle and test flow are described as follows:
the 3801 switch card is composed of 8 groups of 4-to-1 switches, each group of 4-to-1 switches is composed of 4 switch channels and 1 grounding channel, and on-off test needs to be carried out on each channel of each group of switches in sequence.
And (3) testing a path: referring to fig. 3, a resistor with a resistance of 1000 ohms is connected in series in the ground channel of each group of switches, each switch is sequentially connected, the resistance to ground of each switch is measured, if the resistance to ground is 1000 ± 15 ohms, the test is passed, otherwise, the test is not passed.
And (3) open circuit test: and sequentially disconnecting the switches, and measuring the voltage drop at the two ends of the resistor, wherein the switches are in a disconnection state, if the voltage drop at the two ends of the resistor is 0, the test is passed, otherwise, the test is not passed.
As shown in fig. 4, the connection relationship of the test circuit for self-testing the 3801 switch card of the automatic test device of the airborne vhf navigation system receiver is as follows:
P1B-7A, P B-7C, P B-7E, P B-8A, P B-8C, P B-8E, P B-9A, P B-9C, P B-9E, P1B-10A, P B-10C, P B-10E, P B-11A, P B-11C, P B-11E, P B-12A sixteen pins of the VPC connector are connected in series with a resistor R25 and then connected to P1A-10E pins of the VPC connector; P1B-7B, P B-7D, P B-7F, P B-8B, P B-8D, P B-8F, P B-9B, P B-9D, P B-9F, P1B-10B, P B-10D, P B-10F, P B-11B, P B-11D, P B-11F, P B-12B sixteen pins of the VPC connector are commonly connected to P1A-10F pins of the VPC connector.
3801 switch card test principle and test flow are described as follows:
the 3801 switch card is composed of 32-path single-pole single-throw switches, and on-off tests of each path of switches are required to be performed in sequence.
And (3) testing a path: referring to fig. 4, a resistor R25 with a resistance of 1000 ohms is connected in series in the test circuit, and the switches are sequentially connected to measure the resistance to ground, if the resistance to ground is 1000 ± 15 ohms, the test is passed, otherwise, the test is not passed.
And (3) open circuit test: and sequentially disconnecting the switches, and measuring the voltage drop at the two ends of the resistor R25, wherein the switches are in an off state, if the voltage drop at the two ends of the resistor R25 is 0, the test is passed, otherwise, the test is not passed.
As shown in fig. 5, the 3803 switch card of the automatic testing device of the airborne vhf navigation system receiver is connected with a testing circuit for self-testing of the power supply, and the connection relationship is as follows: P1A-14D of the VPC connector are connected to pin No. 3 of the connector J1, and P1A-14E are connected to pin No. 4 of the connector J1; P1A-14D, P A-14E of the VPC connector are respectively connected to two shielded twisted pairs of No. 3 pins and No. 4 pins of the connector J1; P1B-1A of the VPC connector is connected to P1B-14A and P1B-14B, and P1B-1A is connected with a resistor R9 in series and P1B-1B is connected to P1B-13A and P1B-13B; P1B-1C of the VPC connector is connected to P1B-13D, and P1B-1C of the VPC connector is connected with a resistor R10 in series and then connected with P1B-1D to P1B-14D; P1B-1E of the VPC connector is connected to P1B-13F and a No. 8 pin of the connector J1, and P1B-1E and P1B-1F are connected to P1B-12E after being connected with a resistor R11 in series; P1B-2A of the VPC connector is connected to P1B-13E and a No. 7 pin of the connector J1, and P1B-2A and P1B-2B are connected to P1B-12F after being connected with a resistor R12 in series; P1B-2C of the VPC connector is connected to P1B-12D and a No. 6 pin of a connector J1, P1B-2C and a resistor R13 are connected in series, and P1B-2D are connected to P1B-14F and a No. 5 pin of the connector J1 and are connected with shielding layers of two shielding twisted pairs; P1B-2E of the VPC connector is connected to P1A-13F and P1A-14F, P1B-2E is connected with a resistor R14 in series, and P1B-2F is connected to P1B-14E; P1B-3A of the VPC connector is connected to P1B-13C, P1B-3A is connected with a resistor R15 in series, and P1B-3B is connected to P1B-14C; P1B-3C of the VPC connector is connected with a resistor R16 in series and then is connected to P1B-3D; P1B-3E of the VPC connector is connected with a resistor R17 in series and then is connected to P1B-3F; P1B-4A of the VPC connector is connected with a resistor R18 in series and then is connected to P1B-4B; P1B-4C of the VPC connector is connected with a resistor R19 in series and then is connected to P1B-4D; P1B-4E of the VPC connector is connected with a resistor R20 in series and then is connected to P1B-4F; a P1B-5A resistor R21 of the VPC connector is connected in series and then is connected to a P1B-5B; P1B-5C of the VPC connector is connected with a resistor R22 in series and then is connected to P1B-5D; P1B-5E of the VPC connector is connected with a resistor R23 in series and then is connected to P1B-5F; P1B-6A of the VPC connector is connected with a resistor R24 in series and then is connected to P1B-6B; P1B-6C and P1B-6E of the VPC connector are connected to a P1A-10E pin of the VPC connector; P1B-6D and P1B-6F of the VPC connector are connected to a P1A-10F pin of the VPC connector; P1B-12C of the VPC connector is grounded; pin No. 1 and pin No. 2 of the connector J1 are grounded.
3803 switch card and Power test principles and test procedures are described as follows:
3803 switch card is a matrix switch, and is composed of 16 lines in total from 1-16, 2 columns in total from A-B, and 32 switch channels in total, wherein 1-7 lines are respectively connected with AC 115V, DC + 28V, DC + 15V, DC-15V, DC + 5V, DC + 12V, DC 24V power supply, and 8-15 lines are respectively connected with a resistor with resistance of 2000 ohm in series, and two switch channels of 16 lines are respectively connected with P1A-10E and P1A-10F, as shown in FIG. 5.
And (3) testing a path:
lines 1-7: respectively switching on 14 paths of A, B of 1-7 rows, measuring voltages at two ends of the paths, if the voltage value is equal to a reference value +/-1%, passing the test, otherwise, not passing the test;
lines 8-15: respectively switching on 16 paths of A, B of 8-15 rows, measuring the resistance to ground, if the resistance to ground is 2000 +/-20 ohms, the test is passed, otherwise, the test is not passed;
and (3) open circuit test:
lines 1-7: respectively disconnecting 14 paths in all A, B of the rows 1-7, measuring voltages at two ends of the paths, if the voltage value is equal to 0, the test is passed, otherwise, the test is not passed;
lines 8-15: a, B of 8-15 rows in sequence have 16 paths, and voltage drop at two ends of the resistor is measured, because the switch is in an off state, if the voltage drop at two ends of the resistor is 0, the test is passed, otherwise, the test is not passed;
the 16 th line is connected with two testing ends of the digital multimeter, and if all the tests pass, the line passes the test; if there are multiple failures in the test, the row of tests fails.
Digital multimeter: the testing program sends a self-checking command 'TST' through a GPIB interface of the digital multimeter, the digital multimeter immediately enters a self-checking mode, and a self-checking result is returned after the self-checking is finished.
An aviation signal source: sending a self-test COMMAND' through a GPIB interface of an aviation signal source by a test program: : and the aviation signal source immediately enters a self-checking mode, and a self-checking result is returned after the self-checking is finished.
As shown in fig. 6, the control circuit includes a control chip U1 with a model number of C8051 and a linear regulator U2 with a model number of LM1117, and the connection relationship is as follows:
the No. 7 pin of the control chip U1 is grounded; the No. 8 pin is connected to the cathode of the diode D2, the anode of the diode D2 is grounded, and meanwhile, the No. 8 pin is connected to the No. 3 pin of the connector J1; the No. 9 pin is connected to the anode of the diode D3, the cathode of the diode D3 is grounded, and meanwhile, the No. 9 pin is connected to the No. 4 pin of the connector J1; the No. 10 pin is connected with the No. 11 pin, meanwhile, the No. 10 pin is respectively connected to the positive electrode of positive 3.3V direct current, one end of a capacitor C5 and the positive electrode of an electrolytic capacitor C6, and the other end of the capacitor C5 and the negative electrode of the electrolytic capacitor C6 are respectively grounded; the No. 12 pin is connected to the positive electrode of the positive 5V direct current;
the No. 3 pin of the linear voltage stabilizer U2 is respectively connected with the anode of the electrolytic capacitor C2, the anode of the positive 5V direct current, the anode of the light emitting diode LED and one end of the inductor L1, and the other end of the inductor L1 is respectively connected with the cathode of the diode D1 and the anode of the electrolytic capacitor C1 and then is connected with the No. 6 pin of the connector J1; the cathode of the electrolytic capacitor C1 is connected to the No. 5 pin of the connector J1 and the anode of the diode D1 and then grounded; the cathode of the LED is connected with the cathode of the electrolytic capacitor C2 through the resistor R26 and then grounded; the No. 2 pin of the linear voltage stabilizer U2 is respectively connected with the anode of the electrolytic capacitor C3 and one end of the capacitor C4; and the No. 1 pin of the linear voltage stabilizer U2 is connected with the other end of the capacitor C4 and the negative electrode of the electrolytic capacitor C3 and then grounded.
The system loads a self-checking program in test software of the automatic test device of the airborne VHF navigation system receiver, communicates with an industrial personal computer in the automatic test device of the airborne VHF navigation system receiver through a C8051 control circuit built in the system, confirms whether an adapter connected with a resource interface box iCon1 connector of the test device at present is consistent with a selected test program or not, continues the test program if the adapter is consistent with the selected test program, and terminates the test program if the adapter is inconsistent with the selected test program.
A self-checking system of an automatic testing device of an airborne VHF navigation system receiver is developed, self-checking is carried out by utilizing a power supply and a digital multimeter in the automatic testing device of the airborne VHF navigation system receiver, whether a fault exists is judged, and if the fault exists, the name of a fault circuit board card and the type of the fault are output.
As shown in fig. 7, the operation flow of the system is as follows:
1. switching on a power supply of the testing device, and starting the testing device;
2. connecting a plug of the self-checking system with an iCon1 connector of the testing device, and ensuring the connection to be in place;
3. running a test program of the test device;
4. loading a self-checking program in the test program;
5. selecting a test board card or a test component;
6. clicking to start testing, and waiting for the testing to be completed;
7. and checking the test result and selecting whether to print or not.
The system recuperates and pairs signals of a circuit board card or a component in the automatic testing device of the airborne VHF navigation system receiver through a self-designed circuit, tests voltage, current, resistance and other parameters of the signals by using a power supply and a digital multimeter in the automatic testing device of the airborne VHF navigation system receiver, judges the circuit board card or the component with faults, and finally outputs a test result.
Claims (6)
1. The utility model provides an airborne very high frequency navigation system receiver automatic testing arrangement's self-checking system which characterized in that, the self-checking system includes four test circuit and control circuit, four test circuit: the test circuit is used for carrying out self-test on an ARINC429 card and an industrial personal computer serial port RS232_1 of the automatic test device of the airborne VHF navigation system receiver; a test circuit for self-checking the 3802 switch card of the automatic test device of the airborne VHF navigation system receiver; thirdly, a test circuit for self-checking the 3801 switch card of the automatic test device of the airborne VHF navigation system receiver; fourthly, a test circuit for self-checking the 3803 switch card and the power supply of the automatic test device of the airborne VHF navigation system receiver; the four test circuits are connected with an iCon1 connector on a resource interface box of the automatic test device of the airborne VHF navigation system receiver through a VPC connector; the VPC connector has 168 pins, the 168 pins are divided into two regions of P1A and P1B, each region consists of 6 columns, 14 rows in each column and 84 pins, wherein 6 columns in the P1A region are respectively: columns P1A-A, P1A-B, P1A-C, P1A-D, P1A-E and P1A-F; the 6 columns in the P1B region are: P1B-A column, P1B-B column, P1B-C column, P1B-D column, P1B-E column, and P1B-F column; the control circuit is connected with a 3803 switch card of the automatic testing device of the airborne VHF navigation system receiver and a testing circuit for performing self-checking on a power supply through a connector J1;
the self-test system also comprises a digital multimeter of the automatic testing device of the airborne VHF navigation system receiver and a self-test system program of the aviation signal source, wherein the self-test system program is compiled into a DLL file and copied to a test program installation folder of the automatic testing device of the airborne VHF navigation system receiver, the self-test system program is loaded in the test program of the automatic testing device of the airborne VHF navigation system receiver, the digital multimeter and the aviation signal source are internally provided with self-test functions, the self-test system program respectively sends self-test commands to the digital multimeter and the aviation signal source, receives returned self-test results, and then outputs the test results together with the test results of the four test circuit test items.
2. The self-test system of the automatic testing device of the airborne VHF navigation system receiver according to claim 1, characterized in that the connection relationship of the test circuit for self-testing the ARINC429 card and the industrial personal computer serial RS232_1 of the automatic testing device of the airborne VHF navigation system receiver is as follows:
the P1A-1A and the P1A-2C of the VPC connector are connected for testing ARINC429-1#A signals;
the P1A-1B and the P1A-2D of the VPC connector are connected for testing ARINC429-1#B signals;
the P1A-1C and the P1A-2E of the VPC connector are connected for testing ARINC429-2#A signals;
the P1A-1D and the P1A-2F of the VPC connector are connected for testing ARINC429-2#B signals;
the P1A-1E and the P1A-3A of the VPC connector are connected for testing ARINC429-3#A signals;
the P1A-1F and the P1A-3B of the VPC connector are connected for testing ARINC429-3#B signals;
the P1A-2A and the P1A-3C of the VPC connector are connected for testing ARINC429-4#A signals;
the P1A-2B and the P1A-3D of the VPC connector are connected and used for testing ARINC429-4#B signals;
and P1A-3F and P1A-4F of the VPC connector are connected for testing a 1-channel signal of an industrial personal computer serial port RS 232.
3. The self-test system of the automatic testing device of the airborne VHF navigation system receiver according to claim 1, wherein the connection relationship of the test circuit for self-testing the 3802 switch card of the automatic testing device of the airborne VHF navigation system receiver is as follows:
eight pins P1A-5A, P A-5B, P A-5C, P A-5D, P A-5E, P A-10A, P1A-10B, P A-10C of the VPC connector are respectively connected in series with a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7 and a resistor R8 and then are commonly connected to pins P1A-10E of the VPC connector;
P1A-6A, P A-7A, P A-8A, P A-9A, P A-6B, P A-7B, P A-8B, P A-9B, P A-6B, P1A-7B, P A-8B, P A-9B, P A-6B, P, B, P A-7B, P A-8 zxft 6258A-9 zxft 6258A-6B, P7B, P1A-8B, P A-9B, P1A-11B, P1A-12B, P A-13B, P1A-14B, P A-11B, P1A-12B, P A-13B, P A-14C are connected to the thirty-two pins of the VPC connector.
4. The self-test system of the automatic testing device of the airborne VHF navigation system receiver according to claim 1, wherein the connection relationship of the test circuit for self-testing the 3801 switch card of the automatic testing device of the airborne VHF navigation system receiver is as follows:
P1B-7A, P B-7C, P B-7E, P B-8A, P B-8C, P B-8E, P B-9A, P B-9C, P B-9E, P B-10A, P B-10B-C, P B-10E, P B-11A, P B-11C, P B-11E, P B-12A sixteen pins of the VPC connector are connected in series with a resistor R25 and then connected to P1A-10E pins of the VPC connector;
P1B-7B, P B-7D, P B-7F, P B-8B, P B-8D, P B-8F, P B-9B, P B-9D, P B-9F, P1B-10B, P B-10D, P B-10F, P B-11B, P B-11D, P B-11F, P B-12B sixteen pins of the VPC connector are commonly connected to P1A-10F pins of the VPC connector.
5. The self-test system of the automatic testing device of the airborne VHF navigation system receiver according to claim 1, wherein the 3803 switch card of the automatic testing device of the airborne VHF navigation system receiver is connected with a test circuit for self-test of the power supply, and the connection relationship is as follows:
P1A-14D of the VPC connector are connected to a No. 3 pin of the connector J1, and P1A-14E are connected to a No. 4 pin of the connector J1; P1A-14D, P A-14E of the VPC connector are respectively connected to two shielded twisted pairs of a No. 3 pin and a No. 4 pin of the connector J1;
P1B-1A of the VPC connector is connected to P1B-14A and P1B-14B, and P1B-1A is connected with a resistor R9 in series and P1B-1B is connected to P1B-13A and P1B-13B;
P1B-1C of the VPC connector is connected to P1B-13D, and P1B-1C and P1B-1D of the VPC connector are connected to P1B-14D after being connected with a resistor R10 in series;
P1B-1E of the VPC connector is connected to P1B-13F and a No. 8 pin of the connector J1, and P1B-1E and P1B-1F are connected to P1B-12E after being connected with a resistor R11 in series;
P1B-2A of the VPC connector is connected to P1B-13E and a No. 7 pin of the connector J1, and P1B-2A and P1B-2B are connected to P1B-12F after being connected with a resistor R12 in series;
P1B-2C of the VPC connector is connected to P1B-12D and a No. 6 pin of the connector J1, P1B-2C is connected with a resistor R13 in series and then connected with P1B-14F and a No. 5 pin of the connector J1 in series, and is connected with the shielding layers of the two shielding twisted pairs;
P1B-2E of the VPC connector is connected to P1A-13F and P1A-14F, P1B-2E is connected with a resistor R14 in series, and P1B-2F is connected to P1B-14E;
P1B-3A of the VPC connector is connected to P1B-13C, and P1B-3B are connected to P1B-14C after the P1B-3A is connected with a resistor R15 in series;
P1B-3C of the VPC connector is connected with a resistor R16 in series and then is connected to P1B-3D;
P1B-3E of the VPC connector is connected with a resistor R17 in series and then is connected to P1B-3F;
P1B-4A of the VPC connector is connected with a resistor R18 in series and then is connected to P1B-4B;
P1B-4C of the VPC connector is connected with a resistor R19 in series and then is connected to P1B-4D;
P1B-4E of the VPC connector is connected with a resistor R20 in series and then is connected to P1B-4F;
the P1B-5A resistor R21 of the VPC connector is connected in series and then is connected to the P1B-5B;
P1B-5C of the VPC connector is connected with a resistor R22 in series and then is connected to P1B-5D;
P1B-5E of the VPC connector is connected with a resistor R23 in series and then is connected to P1B-5F;
P1B-6A of the VPC connector is connected with a resistor R24 in series and then is connected to P1B-6B;
the P1B-6C and the P1B-6E of the VPC connector are connected to the P1A-10E pins of the VPC connector;
the P1B-6D and the P1B-6F of the VPC connector are connected to the P1A-10F pins of the VPC connector;
P1B-12C of the VPC connector is grounded; the pin 1 and the pin 2 of the connector J1 are grounded.
6. The self-test system of the automatic testing device of the airborne VHF navigation system receiver according to claim 1, wherein the control circuit comprises a control chip U1 with model number C8051 and a linear regulator U2 with model number LM1117, and the connection relationship is as follows:
the No. 7 pin of the control chip U1 is grounded; the No. 8 pin is connected to the cathode of the diode D2, the anode of the diode D2 is grounded, and meanwhile, the No. 8 pin is connected to the No. 3 pin of the connector J1; the No. 9 pin is connected to the anode of the diode D3, the cathode of the diode D3 is grounded, and meanwhile, the No. 9 pin is connected to the No. 4 pin of the connector J1; the No. 10 pin is connected with the No. 11 pin, meanwhile, the No. 10 pin is respectively connected to the positive electrode of positive 3.3V direct current, one end of a capacitor C5 and the positive electrode of an electrolytic capacitor C6, and the other end of the capacitor C5 and the negative electrode of the electrolytic capacitor C6 are respectively grounded; the No. 12 pin is connected to the positive electrode of the positive 5V direct current;
the No. 3 pin of the linear voltage stabilizer U2 is respectively connected with the anode of the electrolytic capacitor C2, the anode of the positive 5V direct current, the anode of the light emitting diode LED and one end of the inductor L1, and the other end of the inductor L1 is respectively connected with the cathode of the diode D1 and the anode of the electrolytic capacitor C1 and then is connected with the No. 6 pin of the connector J1; the cathode of the electrolytic capacitor C1 is connected to the No. 5 pin of the connector J1 and the anode of the diode D1 and then grounded; the cathode of the LED is connected with the cathode of the electrolytic capacitor C2 through the resistor R26 and then grounded; the No. 2 pin of the linear voltage stabilizer U2 is respectively connected with the anode of the electrolytic capacitor C3 and one end of the capacitor C4; and the No. 1 pin of the linear voltage stabilizer U2 is connected with the other end of the capacitor C4 and the negative electrode of the electrolytic capacitor C3 and then grounded.
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Application publication date: 20221028 Assignee: Xi'an Xingyuan Digital Technology Co.,Ltd. Assignor: CIVIL AVIATION University OF CHINA Contract record no.: X2024980002853 Denomination of invention: A self-test system for an automatic testing device of an airborne very high frequency navigation system receiver Granted publication date: 20221125 License type: Common License Record date: 20240314 |