CN221406000U - Aviation low frequency cable off-site testing device - Google Patents
Aviation low frequency cable off-site testing device Download PDFInfo
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Abstract
The utility model discloses an aviation low-frequency cable dislocation testing device, and relates to the technical field of cable testing. One embodiment of the present utility model includes: the system comprises a man-machine interaction module, a system control module, an interface adaptation module, a channel matrix switching module, a conduction test module, an insulation test high-voltage module and an AC withstand voltage test module. The utility model can realize a test method with high efficiency, multiple functions, multiple points and automatic sequencing and printing of test results, and provides higher guarantee for the test of the dislocation of the aerial cable.
Description
Technical Field
The utility model belongs to the technical field of cable testing, and particularly relates to an aviation low-frequency cable dislocation testing device.
Background
Because of bearing the production and testing of various aviation product electrical connectors of different types, a great deal of manpower and time are input every day. The existing insulation tester is a single-path tester, and can only perform insulation test on one path of the electric connector (refer to any two cores or any one core to the shell) at a time, so that the test times are high, and the test efficiency is low (according to the national army standard requirements, the test is performed between every two adjacent cores and between every core and the shell); the test data cannot be automatically stored, an operator needs to record and compare the test data one by one, and the test data of each tested piece is difficult to store and difficult to trace; different tested pieces are required to be manually adjusted to set different test voltages, so that the operation is complex, the working strength is high, and missed detection and false detection are easy to cause. In order to improve the testing efficiency, an aviation low-frequency cable off-site automatic testing device needs to be designed.
The cable test is a common test method, only by means of a resistance tester, one or more persons cooperate with point-by-point detection, the efficiency is low, the workload is high, the artificial error is easy to occur, the potential safety hazard of quality is caused, and meanwhile, faults such as short circuit, misconnection and the like and specific error positions are difficult to detect in hundreds or even thousands of core cables and components; from primary inspection, self-inspection and re-inspection, a set of cables and components need to be inspected for several times, only the on-off state is detected, the resistance of the wires is difficult to measure, and unreliable joints such as poor contact, false soldering, strand breakage and the like in the cables and the components cannot be detected; when the insulation resistance is tested, the rock meter (or the insulation tester) is used for testing point by point, the precision of test data is poor, the data cannot be automatically stored, and the tracing is difficult; when testing AC and DC voltage resistance intensity (voltage and leakage current), the AC and DC voltage resistance tester needs to be used for point-by-point detection, the workload is large, the testing efficiency is low, the testing data precision is poor, and the data cannot be stored automatically. The circuit detection device used by some aviation units mainly aims at the cable connection state and part of performance of some accessory controllers, cannot adapt to the test of various aviation low-frequency cables, and does not have the test methods such as the automatic generation function of the cable connection relation, the insulation voltage-resistant test function, the calibration self-checking function and the like described in the patent.
Disclosure of utility model
Under the requirement of rapid development in the aviation field, a special aviation low-frequency cable automatic testing device is developed, a testing method which is rapid, efficient, multifunctional, multi-point-position and capable of automatically sequencing and printing testing results is achieved, and higher guarantee is provided for the off-position testing of the aviation cable.
In view of this, according to an aspect of the embodiment of the present utility model, there is provided an aviation low-frequency cable dislocation testing apparatus, including a man-machine interaction module 1, a system control module 2, an interface adaptation module 3, a channel matrix switching module 4, a conduction testing module 5, an insulation testing high-voltage module 6, and an AC withstand voltage testing module 7; the man-machine interaction module 1 is used for interacting with software running in the system control module 2 through a keyboard mouse and a display, and performing system setting, data management, test, operation log and script writing; the system control module 2 is used for running software of the test equipment, managing the test steps of the test device and controlling other modules through a control bus; the system control module 2 is crosslinked with other modules through the CPU industrial control card, loads an operating system, provides a basic environment for the software development and the test system operation, and the embedded controller selects an X86 bus architecture processor; the interface adapting module 3 is used for connecting and adapting aviation connector assemblies of different types on the tested cable so that the testing device is in mapping connection with the tested cable; the channel matrix switching module 4 further comprises a multichannel switch control board, which is used for establishing a mapping relation between the interface core of the test cable and the node of the tested cable, establishing and memorizing the test engineering, and processing various types, different models and different packages of wire harness cables; the conduction test module 5 is used for testing the correct conduction relation of the cables, and according to different cable types and structures, the conduction resistance ranges are different, so that the cables with different resistance ranges are tested respectively for more accurately testing the conduction resistance of the cables; when the insulation test high-voltage module 6 is used for insulation test, a programmable high-voltage power module in the equipment generates set voltage, the voltage is input to each cable core through a switch matrix of the channel card, then insulation resistance test is carried out, a corresponding test value is obtained, and whether the test paper is in a set range is determined; if the cable is within the range, judging that the cable to be tested is a qualified cable; if the cable insulation parameter exceeds the set range value, the cable insulation parameter is considered to be unqualified; the AC withstand voltage test module 7 is connected to the end of the tested cable harness by an AC high-voltage excitation source formed by an AC amplifying voltage stabilizing circuit and a transformer through a measuring channel switching unit, wherein the measuring channel switching unit is formed by a relay array, and the tested cable harness is gated to form a measuring channel.
Optionally, the tested cable is abutted against the cable test jack to be a HARTING connector for mapping connection of the test device with the tested cable.
Optionally, the system control module 2 is further configured to establish a test relationship between the cable under test connector a core and the connector B core.
Optionally, the conduction test module 5 is further controlled by an instruction of the system control module 2, and performs an impedance test on the cables after the channel matrix switching module 4 switches the test connection relationship, and the system control module 2 determines the cable conduction relationship according to the set threshold.
Optionally, the insulation test high-voltage module 6 is further controlled by an instruction of the system control module 2, generates a set voltage, inputs the set voltage to the cable core of the tested cable, performs insulation resistance test by a voltage-current method, obtains a corresponding test value, and automatically judges whether the insulation value meets the requirement according to the set threshold by the system control module 2.
Optionally, the AC withstand voltage test module 7 is controlled by an instruction of the system control module 2, generates a set AC voltage, inputs the set AC voltage to the cable cores to be tested, and automatically judges whether the set AC voltage meets the requirement according to a set threshold by testing a leakage current value between the cable cores without conduction relation.
Alternatively, the channel matrix switching module 4 is connected to the interface adapting module 3 through the full connection channel a and the full connection channel B, and the interface adapting module 3 maps and connects all the wires of the cable connector a and the cable connector B into the wires of the full connection channel a and the full connection channel B, respectively.
Alternatively, the channel matrix switching module 4 can automatically control by the program of the control module 2 to realize any connection relation between all the wires of the full connection channel a and the full connection channel B and the conduction test module 5, the insulation test high-voltage module 6 and the AC withstand voltage test module 7.
Compared with the traditional connector test mode, the device for automatically testing the off-position of the aviation low-frequency cable can automatically test electrical parameters such as short circuit, loop resistance, insulation resistance, withstand voltage leakage current, electrical continuity and the like of various electrical connectors through the special adapter configured by the test system, and can graphically display fault channels when testing according to the faults of the multi-channel assembly and the connector channels. Meanwhile, the multi-to-multi channel switching realized by the switch matrix is utilized, and various automatic testing methods in the patent are realized through software automatic control. The system has the functions of creating and managing product items and categories, can test and manage the tested products under each contract number, realizes arbitrary classified test and ordered test, combines the tests, provides detailed test steps and quantitatively displays specific values, automatically stores the values, and automatically generates a test report.
Drawings
FIG. 1 is a schematic diagram of a channel matrix switching module according to the present utility model;
FIG. 2 is a circuit diagram of a conduction test module according to the present utility model;
FIG. 3 is a schematic diagram of the current-voltage method of the present utility model;
FIG. 4 is a schematic diagram of a testing apparatus according to the present utility model;
FIG. 5 is a diagram of the overall architecture of the device of the present utility model;
FIG. 6 is a software architecture diagram of the present utility model;
Wherein: the system comprises a 1-man-machine interaction module, a 2-system control module, a 3-interface adaptation module, a 4-channel matrix switching module, a 5-conduction test module, a 6-insulation test high-voltage module and a 7-AC withstand voltage test module.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The application provides an aviation low-frequency cable dislocation testing device which comprises a man-machine interaction module 1, a system control module 2, an interface adaptation module 3, a channel matrix switching module 4, a conduction testing module 5, an insulation testing high-voltage module 6 and an AC withstand voltage testing module 7; the man-machine interaction module 1 is used for interacting with software running in the system control module 2 through a keyboard mouse and a display, and performing system setting, data management, test, operation log and script writing; the system control module 2 is used for running software of the test equipment, managing the test steps of the test device and controlling other modules through a control bus; the system control module 2 is crosslinked with other modules through the CPU industrial control card, loads an operating system, provides a basic environment for the software development and the test system operation, and the embedded controller selects an X86 bus architecture processor; the interface adapting module 3 is used for connecting and adapting aviation connector assemblies of different types on the tested cable so that the testing device is in mapping connection with the tested cable; the channel matrix switching module 4 further comprises a multichannel switch control board, which is used for establishing a mapping relation between the interface core of the test cable and the node of the tested cable, establishing and memorizing the test engineering, and processing various types, different models and different packages of wire harness cables; the conduction test module 5 is used for testing the correct conduction relation of the cables, and according to different cable types and structures, the conduction resistance ranges are different, so that the cables with different resistance ranges are tested respectively for more accurately testing the conduction resistance of the cables; when the insulation test high-voltage module 6 is used for insulation test, a programmable high-voltage power module in the equipment generates set voltage, the voltage is input to each cable core through a switch matrix of the channel card, then insulation resistance test is carried out, a corresponding test value is obtained, and whether the test paper is in a set range is determined; if the cable is within the range, judging that the cable to be tested is a qualified cable; if the cable insulation parameter exceeds the set range value, the cable insulation parameter is considered to be unqualified; the AC withstand voltage test module 7 is connected to the end of the tested cable harness by an AC high-voltage excitation source formed by an AC amplifying voltage stabilizing circuit and a transformer through a measuring channel switching unit, wherein the measuring channel switching unit is formed by a relay array, and the tested cable harness is gated to form a measuring channel.
Further, the tested cable is abutted with the cable testing jack to form a HARTING connector, and the testing device is in mapping connection with the tested cable.
Further, the system control module 2 is further configured to establish a test relationship between the cable connector a core and the connector B core.
Further, the conduction test module 5 is further configured to be controlled by an instruction of the system control module 2, and perform impedance test on the cables after the channel matrix switching module 4 switches the test connection relationship, where the system control module 2 determines the cable conduction relationship according to a set threshold.
Further, the insulation test high-voltage module 6 is further controlled by an instruction of the system control module 2, generates a set voltage, inputs the set voltage to the cable core of the tested cable, performs insulation resistance test by a voltage-current method, obtains a corresponding test value, and the system control module 2 automatically judges whether the insulation value meets the requirement according to the set threshold.
Further, the AC withstand voltage test module 7 is controlled by the instruction of the system control module 2, generates a set AC voltage, inputs the set AC voltage to the cable cores to be tested, and automatically determines whether the set AC voltage meets the requirement according to the set threshold by testing the leakage current value between the cable cores without conduction relation.
Further, the channel matrix switching module 4 is connected to the interface adapting module 3 through the full connection channel a and the full connection channel B, and the interface adapting module 3 maps and connects all the wires of the cable connector a and the cable connector B to the wires of the full connection channel a and the full connection channel B, respectively.
Further, the channel matrix switching module 4 can automatically control all the wiring of the full-connection channel a and the full-connection channel B through the program of the control module 2, and can realize any connection relation between all the wiring and the conduction test module 5, the insulation test high-voltage module 6 and the AC withstand voltage test module 7.
Examples
An aviation low-frequency cable off-site automatic testing device (shown in figure 1) comprises a man-machine interaction module 1, a system control module 2, an interface adaptation module 3, a channel matrix switching module 4, a conduction testing module 5, an insulation testing high-voltage module 6 and an AC voltage withstand testing module 7, wherein the details are shown in figure 4. The tested cable is a cable to be tested and comprises an aviation connector component (J599/20 WH35SN-E-006, J599/20WH35SA-E-007, CC-02-00-7366, CC-02-00-7367, LEMP-04-010, LEMP-04-011 and the like); the man-machine interaction module 1 interacts with software running in the system control module 2 through a keyboard mouse and a display to complete the functions of system setting, data management, test, running log, script writing and the like of the test device; the system control module 2 is used for running software of the test equipment, managing the test steps of the test device and controlling other modules through a control bus; the system control module 2 is crosslinked with other modules through a CPU industrial control card, is a control center of the device, can load a Windows operating system, is a basic environment for running a software development and test system, is a currently popular high-performance industrial control processor, can smoothly run large-scale operating systems such as Windows, and is easy to realize friendly man-machine interaction, and the data transmission speed is greatly improved. The Intel I7 4500 4 kernel industrial control main board is a core component of the standard tester, is a carrier for running the whole hardware, software platform and test diagnosis strategy, and the advantages and disadvantages of the carrier are directly important to the overall performance of the whole device.
The interface adapting module 3 is a switching module of various aviation connectors and is used for connecting and adapting different types of aviation connector components on the tested cable so as to realize the mapping connection between the testing device and the tested cable; the device adopts HARTING connectors as tested cables to butt the cable test sockets, achieves mapping connection between the test device and the tested cables, and completes the test task of the tested entity.
The channel matrix switching module 4 is implemented by using a multi-channel switch control board in the device, and consists of 16-64 and above channel matrix switches, as shown in fig. 1. Under the control of the system, the mapping relation between the interface core of the test cable and the node of the tested cable is flexibly established, the test engineering is established and memorized, and the wire harness cables with various types, different models and different packages are processed. The mapping relation is built once, the correct cable relation can be memorized, and the fault conditions of short circuit, open circuit, misconnection and the like of the cable can be directly and rapidly detected when the same cable test is carried out again.
The conduction test module 5 is used for testing the correct conduction relation of the cable, and can judge by testing the conduction resistance of the cable. According to different cable types and structures, the on-resistance ranges are different, and in order to more accurately test the on-resistance of the cables, the cables with different resistance ranges are tested respectively, as shown in fig. 2. Fig. 2 shows: VMETER-voltage measured by a tester, VDUT-actual voltage values at two ends of a measured element, rsystem-system internal resistance, RLoad-detection lead resistance, RContact-contact resistance. Since the voltmeter can be regarded as a resistance element with a large resistance, the induced current flowing through the voltmeter in the circuit is small, so that VMETER =vdut can be obtained to have:
R-test = VMETER/ITEST = VDUT/ITEST = R-real
When the insulation test high-voltage module 6 is used for insulation test, a programmable high-voltage power module in the equipment generates set voltage, signals are input into each path of cable core through a switch matrix of the channel card, insulation resistance test is then carried out, corresponding test values are obtained, and whether the insulation values are in a set range or not is automatically judged through software; if the cable is within the range, judging that the cable to be tested is a qualified cable; and if the cable insulation parameter exceeds the set range value, the cable insulation parameter is considered to be unqualified. The insulation resistance test of the device is carried out by adopting a current-voltage method, and is shown in figure 3. The voltage drop across the sampling resistor Rf by the current through the whole measuring loop is Uf, and the value of the insulation resistor Rx can be calculated from ohm's law.
Rx＝(Vi-Uf)/(Uf/Rf)
The insulation resistance of the tested cable harness can be obtained through a voltage-current method, so that the insulation performance of the cable harness can be judged.
The AC withstand voltage test module 7 is connected to the harness end of the tested cable through a measurement channel switching unit by an AC high-voltage excitation source consisting of an AC amplifying voltage stabilizing circuit and a transformer. The measuring channel switching unit is composed of a relay array, a measured cable harness is gated to form a measuring channel, and the alternating current withstand voltage test is used for detecting the insulation performance between every two non-connected cables, namely, the two cables are not connected. The alternating current withstand voltage test principle is similar to the insulation resistance test principle, except that a DC high-voltage excitation source is adopted in the insulation resistance test to react the insulation performance to the magnitude of a resistance value, and an AC high-voltage excitation source is adopted in the alternating current withstand voltage test to react the insulation performance to the magnitude of leakage current.
And under the control of the instruction of the system control module 2, the test relation between the cable connector A core and the connector B core is established. The conduction test module 5 is controlled by the instruction of the system control module 2, impedance tests are respectively carried out on the cables after the channel matrix switching module 4 switches the test connection relation, and the system control module 2 judges the cable conduction relation according to a set threshold; the insulation test high-voltage module 6 is controlled by the instruction of the system control module 2, generates set voltage and inputs the set voltage to the cable core of the tested cable, and performs insulation resistance test by a voltage-current method to obtain a corresponding test value, and the system control module 2 automatically judges whether the insulation value meets the requirement according to the set threshold; the AC withstand voltage test module 7 is controlled by the instruction of the system control module 2, generates set alternating voltage and inputs the set alternating voltage to the cable cores to be tested, and the system control module 2 automatically judges whether the set alternating voltage meets the requirements according to the set threshold by testing the leakage current value between the cable cores without conducting relation.
The channel matrix switching module 4 (schematic diagram of fig. 4) is connected with the interface adaptation module 3 through the full connection channel a and the full connection channel B, and the interface adaptation module 3 maps and connects all the wires of the cable connector a and the cable connector B into the wires of the full connection channel a and the full connection channel B, respectively. The channel matrix switching module 4 can automatically control all wiring of the full-connection channel A and the full-connection channel B and any connection relation of the test modules 5, 6 and 7 through a program of the control module 2.
(II) principle of function:
1. automatic generation function of cable connection relation
A. Selecting the types of connectors at two ends of the cable through a man-machine interaction module;
b. The system control module 2 controls the channel matrix switching module 4 to realize connection grouping mapping of the wire core 1 in the connector A and the wire core 1 of the connector B, and the system control module 2 controls the conduction test module 5 to complete impedance test and record the result;
c. According to the method, the impedance values of the wire cores 1 and B in the connector A are measured in parallel in groups, and the impedance is smaller than a set threshold value and is in a conducting relation;
d. and by analogy, scanning all the wire cores at the two ends of the cable, and finally generating an internal relation table of the cable through the conduction relation of the wire cores.
2. Conduction short circuit test function
A. Selecting the types of connectors at two ends of the cable through a man-machine interaction module;
b. The system control module 2 controls the channel matrix switching module 4 to realize connection grouping mapping of the wire core 1 in the connector A and the wire core 1 of the connector B, and the system control module 2 controls the conduction test module 5 to complete impedance test and record the result;
c. according to the method, impedance values of the wire cores 1 and B in the connector A are measured in groups, and the impedance is smaller than a set threshold value and is in a conducting relation.
3. Insulation voltage withstand test function
A. The method comprises the following testing steps of quick grounding combination testing, network grouping item testing, testing voltage curve control, network grouping interaction testing, high-voltage shielding and the like.
B. The network grouping interaction test method is used for respectively testing the test requirements of different units, conducting test is firstly carried out, then short circuit test is carried out, then insulation voltage withstand test is carried out, and the system control module 2 judges whether insulation resistance and leakage current between the wires and the shell meet the requirements or not according to the set threshold.
4. Calibration self-checking function
A. Performing a self-checking mode through a man-machine interaction module;
b. The system control module 2 performs output detection from the lowest value to the highest value on the voltage sources of all matrix switches by the interface adaptation module 3 and the channel matrix switching module, and judges whether the matrix switches are normal or not.
C. The system control module 2 performs on-current calibration and module calibration of a high-voltage source on the on-test module 5, the insulation test high-voltage module 6 and the AC withstand voltage test module 7, and judges whether each module is normal or not.
Example 2
The application relates to an automatic off-site testing method and device for aviation low-frequency cables. The device is composed of an industrial control card, a multichannel switch control board, an insulation test high-voltage module card, an on-resistance test module, a bus backboard, a test cable interface and working units of hardware units. See fig. 5 for an overall architecture diagram of the device.
The invention mainly realizes the functions of self-learning function, conduction short circuit test function, insulation test function, voltage withstand test function, data printing test function, calibration self-checking function, safety protection alarm and the like. Wherein each component functions as follows:
1. Automatic generation of cable connection relationships
The cable is scanned rapidly, so that the internal connection relation of the cable to be tested can be automatically generated, and the images and texts are visually displayed; the connection relation of the tested cables can be imported in a table, whether the wiring is correct or not is judged by scanning, and manual point-by-point measurement is not needed.
2. Conduction short circuit test function
The conduction performance detection of the cable is completed by testing and analyzing the on-resistance of the tested cable, meanwhile, faults such as short circuit, circuit breaking, missing points and the like of the tested object are judged, and the on-short circuit judging resistance value can be set at will in a range.
3. Insulation test function
The multi-point insulation performance test is automatically completed, the quick batch test and the point-by-point test can be selected, and the boosting time, the pressurizing time and the test voltage can be set in any range. And judging whether the insulation resistance value of the cable is qualified or not.
4. Withstand voltage test function
The multi-point voltage-withstand performance test is automatically completed, the quick batch test and the point-by-point test can be selected, the test voltage, the boosting time, the pressurizing time and the leakage current can be set arbitrarily in the range, and the leakage current between the test points and between the points and the insulating layers can be judged to judge whether the cable is qualified or not.
5. Precision device testing function
Resistance test function: the software can test specific resistance and also can test the resistance value of the cable;
6. Data printing function
The method can be connected with external equipment such as a printer, a scanning gun and the like, test completion and test report storage are convenient, inquiry is convenient, the method can be synchronously printed, information contents including product information, testers, test data and the like are contained, manual recording is not needed, and report formats can be modified according to requirements.
7. Safety protection alarm function
Overvoltage and overcurrent protection, audible and visual alarm, and rapid cut-off of discharge phenomenon within 25uS, and safety of test products and personnel are ensured.
8. Calibration self-checking function
And when the device is started, the self-checking of the device is automatically completed, the self-fault of the device is detected, and the safety and reliability are improved.
The software is divided into 6 parts including system setting, engineering connector data management, test and running log, switch high voltage hardware control, distributed network, script writing and running environment, and the software architecture is shown in figure 6.
1. Automatically generating a cable connection relation:
Detecting the connection relation and the accurate resistance value of an unknown cable bundle; the software can learn the connection relation of unknown cables through automatic detection, and the connection relation is disordered caused by the passage, short circuit, open circuit, pin dislocation, poor connection and the like of the wires; the conduction performance monitoring passing and auxiliary assembly of the lead are completed by testing and analyzing the on-resistance of the common lead, and the accurate line sequence number of the node can be rapidly searched.
2. Insulation/withstand voltage test:
The method comprises the following testing steps of quick grounding combination testing, network grouping item testing, testing voltage curve control, network grouping interaction testing, high-voltage shielding and the like. The method mainly utilizes a network grouping interaction test method to test the test requirements of different units in a set of wire nets, firstly conducts the test, then conducts the short circuit test, then conducts the insulation voltage withstand test, automatically completes the multipoint insulation test and the voltage withstand test, has adjustable boosting time and testing time, and has adjustable test voltage program control; one-to-many or two-to-two rapid testing of insulation resistance between wires and between the wires and the housing, and leakage current is possible.
3. Test report record management function
The system has the functions of automatically recording, displaying and printing the test process and the test result; the test data and the test report are automatically recorded and automatically saved to the appointed catalog, and the test data and the test report have an online editing function and can be stored in Text and PDF forms. Intuitively and in detail, the test result is displayed, and the 'pass' and 'fail' conclusions are given
According to the requirements of a test report template provided by a customer, the template is automatically imported, required test items are screened out, a corresponding test report is provided according to the template, and the report can be displayed in any file type of Word, PDF, excel.
The foregoing is merely a detailed description of the utility model, which is not a matter of routine skill in the art. However, the scope of the present utility model is not limited thereto, and any changes or substitutions that can be easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. The protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (8)
1. An off-site testing device for an aviation low-frequency cable is characterized by comprising
The system comprises a man-machine interaction module (1), a system control module (2), an interface adaptation module (3), a channel matrix switching module (4), a conduction test module (5), an insulation test high-voltage module (6) and an AC withstand voltage test module (7);
The man-machine interaction module (1) is used for interacting with software running in the system control module (2) through a keyboard mouse and a display, and performing system setting, data management, test and running log and script writing; the system control module (2) is used for running software of the test equipment, managing the test steps of the test device and controlling other modules through the control bus; the system control module (2) is crosslinked with other modules through the CPU industrial control card, loads an operating system, provides a basic environment for the software development and the test system operation, and the embedded controller selects an X86 bus architecture processor;
The interface adapting module (3) is used for connecting and adapting aviation connector assemblies of different types on the tested cable so that the testing device is in mapping connection with the tested cable;
The channel matrix switching module (4) also comprises a multichannel switch control board, which is used for establishing the mapping relation between the interface wire core of the test cable and the node of the tested cable, establishing and memorizing the test engineering and processing the wire harness cables with various types, different models and different packages;
The conduction test module (5) is used for testing the correct conduction relation of the cables, and according to different cable types and structures, the conduction resistance ranges are different, so that the cables with different resistance ranges are tested respectively for more accurately testing the conduction resistance of the cables;
When the insulation test high-voltage module (6) is used for insulation test, a programmable high-voltage module in the equipment generates set voltage, the voltage is input to each path of cable core through a switch matrix of the channel card, then insulation resistance test is carried out, a corresponding test value is obtained, and whether the test paper is in a set range is determined; if the cable is within the range, judging that the cable to be tested is a qualified cable; if the cable insulation parameter exceeds the set range value, the cable insulation parameter is considered to be unqualified;
The AC withstand voltage test module (7) is connected to the end of the tested cable harness through a measuring channel switching unit, wherein the measuring channel switching unit is composed of a relay array, and the tested cable harness is gated to form a measuring channel.
2. The device of claim 1, wherein the tested cable interfaces with the cable test socket as HARTING connectors for mapping connection of the test device to the tested cable.
3. The device according to claim 1, wherein the system control module (2) is further configured to establish a test relationship between the cable-under-test connector a core and the connector B core.
4. A device according to claim 3, wherein the conduction testing module (5) is further configured to be controlled by the instruction of the system control module (2), and to perform impedance testing on the cables after the channel matrix switching module (4) switches the test connection relationship, respectively, and the system control module (2) determines the cable conduction relationship according to the set threshold.
5. The device according to claim 4, wherein the insulation test high voltage module (6) is further controlled by an instruction of the system control module (2), generates a set voltage and inputs the set voltage to the cable core to be tested, and performs insulation resistance test by a voltage-current method to obtain a corresponding test value, and the system control module (2) automatically judges whether the insulation value meets the requirement according to the set threshold.
6. The device according to claim 5, wherein the AC withstand voltage test module (7) is controlled by an instruction of the system control module (2), generates a set alternating voltage and inputs the set alternating voltage to the cable core to be tested, and the system control module (2) automatically judges whether the set alternating voltage meets the requirement according to a set threshold by testing a leakage current value between the cable cores which are not in conduction relation.
7. The device according to claim 1, characterized in that the channel matrix switching module (4) is connected to the interface adaptation module (3) via the full connection channel a and the full connection channel B, the interface adaptation module (3) mapping all connections of the cable connectors a and B into the connections of the full connection channel a and the full connection channel B, respectively.
8. The device according to claim 7, wherein the channel matrix switching module (4) can automatically control all the wiring of the full connection channel a and the full connection channel B through the program of the control module (2) to realize any connection relation between all the wiring and the conduction test module (5), the insulation test high-voltage module (6) and the AC withstand voltage test module (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202323308331.5U CN221406000U (en) | 2023-12-04 | 2023-12-04 | Aviation low frequency cable off-site testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202323308331.5U CN221406000U (en) | 2023-12-04 | 2023-12-04 | Aviation low frequency cable off-site testing device |
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| CN221406000U true CN221406000U (en) | 2024-07-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119556003A (en) * | 2024-11-27 | 2025-03-04 | 深圳供电局有限公司 | Automated insulation resistance testing system, method and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119556003A (en) * | 2024-11-27 | 2025-03-04 | 深圳供电局有限公司 | Automated insulation resistance testing system, method and storage medium |
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