Cylindrical initiating explosive device cable tester
By designing a cylindrical pyrotechnic cable tester, integrating main and auxiliary testing equipment and adopting advanced communication methods and components, the cable testing has been made intelligent and convenient, solving the problems of large size, inconvenient operation, and large error of existing equipment, and improving the accuracy and adaptability of testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 计大威
- Filing Date
- 2025-04-07
- Publication Date
- 2026-04-10
AI Technical Summary
Existing cable testers are bulky, inconvenient to operate, difficult to achieve intelligent and automatic testing, susceptible to human error, require cumbersome preparation for testing, have poor scalability, and cannot flexibly adapt to the testing needs of different scenarios.
A tubular pyrotechnic cable tester was designed, comprising a main test device and an auxiliary test device. It adopts RS232 and RS485 communication methods and integrates core components such as an LCD screen, keyboard, main control acquisition card, and matrix switch card to achieve unified management and data interaction. The auxiliary test device and the main test device cooperate with each other through RS485 communication to accurately switch test point numbers, provide excitation return line and measurement negative line channels, and support the testing of cables of different types and specifications.
It improves testing accuracy and efficiency, reduces errors, enhances operational convenience and scalability, and can efficiently test cable performance in various scenarios, supporting the stable operation and maintenance of the launch vehicle.
Smart Images
Figure CN224109587U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cable tester technical field more specifically, relate to a kind of barrel charge cable tester. BACKGROUND
[0002] Barrel charge container rack cable tester is specially made for the through insulation inspection of container rack cable, and plays a key role in container rack cable detection and maintenance field. Its core function focuses on the accurate inspection of cable continuity and insulation performance, and can sensitively detect whether the internal circuit of cable is smooth, and whether the insulation layer has damage, aging and other safety hazards.
[0003] However, the existing cable tester has the following problems when in use:
[0004] Traditional cable detection methods have many drawbacks and cannot meet the increasingly complex detection requirements. For example, the detection equipment is bulky and difficult to operate in the limited space around the container rack, and is not convenient to carry to different locations for detection. At the same time, most traditional equipment relies on manual operation, has low detection efficiency, is prone to human error, and is difficult to realize intelligent automatic testing. Moreover, during the testing process, there is a lack of pre-attached plug-and-play function, making the detection preparation work tedious, and in terms of data processing, manual data collection not only consumes a lot of time and effort, but also is not conducive to subsequent analysis and statistics, making it difficult to accurately control cable performance. In addition, the traditional equipment has poor expandability and cannot flexibly adapt to the testing requirements in different actual application scenarios.
[0005] The utility model has intelligent automatic testing function, and is easy and efficient to operate, has good safety and stability, accurate data acquisition, strong expandability, can meet complex cable testing requirements, and is small and portable, can easily cope with various scenarios. UTILITY MODEL CONTENTS
[0006] The utility model aims at solving the technical problems in the above background art, and provides a barrel charge cable tester.
[0007] To achieve the above purpose, the utility model provides the following technical scheme: a barrel charge cable tester, comprising: a main test device and an auxiliary test device, the main test device includes a cover plate, a liquid crystal screen, a hard disk, a keyboard and an internal main control acquisition card and a matrix switch card, the main test device and the main control acquisition card communicate through RS232, the main control acquisition card and the matrix switch card communicate through RS485 bus, the main control acquisition card and the matrix switch card switch point number and retrieve measurement data through RS485, and the auxiliary test device and the main test device communicate through RS485.
[0008] Further preferred: the main test equipment is provided with three interfaces on the right side of the upper end, which are respectively a 220V power switch interface, a test interface and a main and auxiliary equipment communication interface.
[0009] Further preferred: the main test equipment is provided with three interfaces on the right side of the upper end, which are respectively a 220V power switch interface, a test interface and a main and auxiliary equipment communication interface.
[0010] Further preferred: the main test equipment is provided with three interfaces on the right side of the upper end, which are respectively a 220V power switch interface, a test interface and a main and auxiliary equipment communication interface.
[0011] Further preferred: the main test equipment is provided with three interfaces on the right side of the upper end, which are respectively a 220V power switch interface, a test interface and a main and auxiliary equipment communication interface.
[0012] Further preferred: the main test equipment is provided with three interfaces on the right side of the upper end, which are respectively a 220V power switch interface, a test interface and a main and auxiliary equipment communication interface. Beneficial effects
[0013] 1. By setting the main test equipment, it integrates various core components such as liquid crystal screen, keyboard, main control acquisition card and matrix switch card, etc., to build a complete test center, realize unified control and data interaction of the whole test process, through RS232 and RS485 communication mode, the main test equipment can communicate and cooperate with other equipment and modules smoothly, ensure that the instruction is conveyed timely and accurately, and the data feedback is rapid and reliable. In the test process, the main test equipment adopts advanced measurement methods such as Kelvin four-wire measurement method, effectively avoids the interference of internal resistance of the equipment, greatly improves the test accuracy, provides solid data support for cable performance evaluation, at the same time, its software operation interface is convenient, can easily select cable number, test type, automatically generate test report, greatly simplify the operation process, improve the test efficiency, whether it is daily maintenance, training teaching or maintenance scene, can provide efficient and reliable test support for relevant personnel, and effectively guarantee the stable operation of the launch vehicle and other equipment.
[0014] 2. By setting up auxiliary test equipment, auxiliary test equipment is closely connected with main test equipment through RS485 communication, and the two cooperate to complete the complex cable test task, in the test process, the auxiliary test equipment accurately switches the test point number according to the instruction of the main test equipment, provides a key path for the smooth development of the test, effectively improves the continuity and fluency of the test, and the auxiliary test equipment provides the excitation return line and the measurement negative line channel for the main test equipment, which greatly optimizes the test circuit structure, in the on-off test and insulation test and various tests, its cooperative operation with the main test equipment further reduces the test error, makes the measurement data more accurate and reliable, and lays a solid foundation for accurate evaluation of cable performance, at the same time, the existence of auxiliary test equipment enriches the functional expandability of the tester, through cooperation with the main test equipment and software and adapter cable, different types and different specifications of cables can be tested, which greatly improves the application range and practicality of the tester, and effectively supports the maintenance, teaching and repair work of the launch vehicle in various scenes;
[0015] 3. As described above, the barrel explosive cable tester is provided with main test equipment, auxiliary test equipment, handle one and handle two, the main test equipment integrates multiple core components, uniformly controls the test process and data interaction, lays a foundation for test accuracy, the auxiliary test equipment and the main test equipment closely cooperate through RS485 communication, accurately switch the test point number, provide a key circuit channel, further improve the test continuity and reduce the error, the two complement each other, greatly optimize the test circuit structure, ensure the reliability of data, and comprehensively improve the test efficiency, handle one and handle two provide convenience for equipment carrying from the practical point of view, whether the tester needs to be frequently moved during daily maintenance of the launch vehicle, or transferred between different sites in training teaching and repair scenes, the operating personnel can easily carry the equipment with the help of handle, significantly improve the operation convenience, save manpower and time cost, and the structures cooperate with each other, so that the tester can cope with complex and diverse cable test tasks, and accurately detect different types and specifications of cables. BRIEF DESCRIPTION OF DRAWINGS
[0016] Fig. 1 It is a whole structure schematic view of the utility model.
[0017] Fig. 2 It is a main test equipment function module structure schematic view of the utility model.
[0018] Fig. 3 It is a cable on-off test connection schematic view of the utility model.
[0019] Fig. 4 It is an on-off test principle schematic view of the utility model.
[0020] Fig. 5The cable insulation test connection schematic diagram of the utility model.
[0021] Fig. 6 The insulation test principle schematic diagram of the utility model.
[0022] Figs. 1-6 Middle: 1, main test equipment; 101, cover plate; 102, liquid crystal screen; 103, interface one; 104, indicator light; 105, handle one; 106, heat dissipation opening; 107, foot pad; 108, safety tube; 109, grounding pile; 2, auxiliary test equipment; 201, handle two; 202, interface two; 203, button. DETAILED DESCRIPTION
[0023] The utility model will be described below in conjunction with the drawings in the embodiment of the utility model. Figs. 1-6 The technical scheme in the embodiment of the utility model is clearly and completely described.
[0024] Please refer to Figs. 1-6The utility model discloses a kind of barrel firework cable testers, comprising: main test equipment 1 and auxiliary test equipment 2, main test equipment 1 includes cover plate 101, liquid crystal screen 102, hard disk, keyboard and internal main control acquisition card, matrix switch card, main test equipment 1 and main control acquisition card carry out RS232 communication, main control acquisition card and matrix switch card adopt RS485 bus communication, main control acquisition card, matrix switch card carry out point number switching and retrieve measurement data by RS485, auxiliary test equipment 2 and main test equipment 1 adopt RS485 communication, three interfaces one 103 are set in the right side of the upper end of main test equipment 1, respectively 220V power switch interface, test interface and main auxiliary equipment communication interface, indicating lamp 104 is fixedly installed in the left side of the upper end of main test equipment 1, main test equipment 1 and auxiliary test equipment 2 are fixedly installed with handle one 105 and handle two 201 respectively on front, main test equipment 1 left end front and back side is set with heat dissipation port 106, foot pad 107 is fixedly installed in the bottom of main test equipment 1 four corners, fuse tube 108 and ground stake 109 are fixedly installed in the rear end of main test equipment 1, interface two 202 is set in the left end of auxiliary test equipment 2, button 203 is set below interface two 202, main test equipment 1 provides DC12V power supply for all modules in equipment and auxiliary test equipment 2 by internal AC / DC power module, main test equipment 1 and main control acquisition card carry out RS232 communication, for controlling execution various test and feedback test data main control acquisition card and matrix switch card adopt RS485 bus communication, the excitation source (high voltage output, constant current output) of various board cards and test line are connected through connector, main control acquisition card, matrix switch card carry out point number switching and retrieve measurement data by RS485, main control acquisition card can control auxiliary test equipment 2 to carry out test point number switching through main auxiliary communication interface in interface one 103, provide pass for test, auxiliary test equipment 2 and main test equipment 1 adopt RS485 communication, accept the command from main test equipment 1 and carry out test point switching, auxiliary test equipment 2 provides excitation return line and measurement negative line channel for main test equipment 1.12V power supply of auxiliary test equipment 2 is provided through interface two 202 and 220V power switch interface in interface one 103, when cable conduction test is carried out, main test equipment 1 and auxiliary test equipment 2 are connected through main auxiliary communication cable, measured cable is connected in the test port of main test equipment 1 and auxiliary test equipment 2 through adapter cable and carries out test, (connection mode sees cable conduction test connection schematic diagram), test equipment adopts Kelvin four-wire system measurement method to realize cable conduction test, (system test principle frame is conduction test principle schematic diagram), adopts Kelvin four-wire system measurement method, adjustable constant current source and difference sampling to measure conduction resistance.By relay switching, 64 points can be turned on for conduction test. Taking conduction resistance test as an example, the main control acquisition card is switched to constant current source output mode, the main device cuts the measured cable "main ②" into the test loop, and the auxiliary test device cuts "auxiliary ②" into the test loop (the red line is the excitation signal loop). After the current is stable, the conduction resistance is collected. Specifically, the Kelvin four-wire measurement principle is used for testing (the green line is the collection signal loop). When measuring a certain distance resistance with an ohmmeter, the measured value contains the resistance of the connecting wire (Rwire) and the relay contact resistance of the matrix switch card. The wire resistance is generally very small, but when the measured resistance is a very low resistance, the measurement error of the lead resistance is very large. In order to avoid this measurement error, the current table and the voltage table can be used for measurement at the same time, and the measurement pen of the voltage table is directly connected to the two ends of the measured resistance. According to Ohm's law, the measured resistance Rsubject = measured voltage / constant current value can be calculated. In the conduction resistance test, the conduction resistance of the adapter cable at the ends of the main test device 1 and the auxiliary test device 2 is taken as the system error, and the software method is used for correction. The correction value software of each channel of the adapter cable can be configured.
[0025] In the embodiment of the utility model, during insulation test, the main test device 1 is connected with the measured cable through the adapter cable. The cable insulation test is realized by comparison method, (see cable insulation test connection diagram for insulation test principle), according to the insulation test principle diagram, taking insulation test (green test case) as an example, the main control acquisition card is switched to insulation mode, the main device cuts the measured cable "main ①" into the test loop, and the auxiliary test device cuts "main ②" into the test loop, according to the output set high voltage value. After the high voltage is stable, the insulation resistance is tested by comparison method. When measuring insulation, there is a current limiting resistor in the high voltage output path, so there is a small drop in the voltage at Vt during measurement. The comparison method can avoid the influence of voltage drop on measurement accuracy. The comparison method principle is as follows:
[0026] The insulation test adopts comparison method, and the insulation test principle diagram can be known as follows:
[0027] V1=Vs×R2 / (R1+R2)
[0028] V2=Vs×R3 / (Rx+R3)
[0029] Rx=(V1 / V2)×R3×(R1+R2) / R2–R3.
[0030] From the formula, as long as V1 and V2 two voltages are measured at the same time, Rx resistance value can be accurately calculated, and it is independent of Vt voltage accuracy, which improves the test accuracy.
[0031] In the embodiment of the utility model, each device is connected according to cable conduction test connection schematic diagram for on -off test, each device is connected according to cable insulation test connection schematic diagram for insulation test, then main test equipment 1 runs software, according to the cable number corresponding to the cable to be measured, on -off or insulation test, click start, and the cable tester will automatically start testing until the end, click report generation, and the test result of the measured cable can be automatically generated. The cable tester can realize the conduction and insulation test of different cable racks through the adapter cable. The cable tester can effectively improve the cable test efficiency of the launch vehicle in daily maintenance, training teaching and maintenance, and has important significance for improving the guarantee benefit. The cable tester can test other cables (below 60 cores) by changing the software adaptively and adapting the adapter cable.
[0032] Working principle: connect the 220V power line to the 220V power switch interface of the main test equipment 1 to power on the main test equipment 1, which provides DC 12V power for all modules in the device and the auxiliary test equipment 2 through the internal AC / DC power module. The 12V power of the auxiliary test equipment 2 is connected to the 220V power switch interface in interface two 202 and interface one 103. Connect the main test equipment 1 and the auxiliary test equipment 2 through the main auxiliary device communication interface using RS485 communication line to ensure normal communication. According to the cable conduction test connection diagram, connect the measured cable to the test port of the main test equipment 1 and the auxiliary test equipment 2 through the adapter cable. Connect the main test equipment 1 and the auxiliary test equipment 2 through the main auxiliary communication cable to form a test path. According to the cable insulation test connection diagram, connect the main test equipment 1 to the measured cable through the adapter cable. Turn on the main test equipment 1 and perform RS232 communication between the main test equipment 1 and the main control acquisition card. The main control acquisition card communicates with the matrix switch card using RS485 bus. Run the software of the main test equipment 1. In the software interface, select the corresponding cable number according to the measured cable, select the conduction test option, click start, and switch the main control acquisition card to constant current source output mode. The main device cuts the measured cable "main ②" into the test loop, and the auxiliary test equipment cuts "auxiliary ②" into the test loop (red line is the excitation signal loop). After the current stabilizes, use the Kelvin four-wire measurement method (green line is the signal acquisition loop) to collect the conduction resistance. The conduction resistance of the adapter cable at the end of the main test equipment 1 and the auxiliary test equipment 2 is used as the system error, which is corrected by software. The correction value of each channel of the adapter cable can be configured by software. After the test is completed, the main control acquisition card and the matrix switch card retrieve the measurement data to the main test equipment 1 through RS485. Select the insulation test option and click start. The main control acquisition card switches to insulation mode. The main device cuts the measured cable "main ①" into the test loop, and the auxiliary test equipment cuts "main ②" into the test loop. According to the output setting high voltage value, after the high voltage stabilizes, the insulation resistance is tested by comparison method. According to the insulation test principle, the insulation resistance value is calculated by the formula Rx=(V1 / V2)×R3×(R1+R2) / R2–R3, where V1 and V2 are two voltages measured simultaneously. The Rx resistance value can be accurately calculated to avoid the influence of Vt voltage drop on measurement accuracy. After the test is completed, the measurement data is transmitted to the main test equipment 1 through the related communication method. After the test is completed, click the report generation in the software interface of the main test equipment 1 to automatically generate the test result report of the measured cable. The report includes the conduction test result and the insulation test result. Analyze the test result. If the test result is abnormal, check and handle the corresponding situation according to the abnormal situation, such as checking whether the cable connection is loose or the cable is damaged. After the test is completed, turn off the software and power of the main test equipment 1, disconnect the measured cable and the adapter cable, and disconnect the adapter cable from the main and auxiliary test equipment. Disconnect the main auxiliary device communication cable and the power cable.The main test equipment 11 and the auxiliary test equipment 22 are properly placed, and the test site is cleaned.
Claims
1. A cartridge pyrotechnic cable tester, comprising: The main test equipment (1) and the auxiliary test equipment (2) are characterized in that the main test equipment (1) comprises a cover plate (101), a liquid crystal screen (102), a hard disk, a keyboard and an internal main control acquisition card and a matrix switch card, the main test equipment (1) and the main control acquisition card are in RS232 communication, the main control acquisition card and the matrix switch card are in RS485 bus communication, the main control acquisition card and the matrix switch card are in point number switching and the measurement data is retrieved through RS485, and the auxiliary test equipment (2) and the main test equipment (1) are in RS485 communication.
2. A cartridge pyrotechnic cable tester according to claim 1, characterized in that: Three interface one (103) are arranged on the right side of the upper end of the main test equipment (1), which are respectively a 220V power switch interface, a test interface and a main auxiliary equipment communication interface.
3. A cartridge pyrotechnic cable tester according to claim 1, wherein: An indicator light (104) is fixedly installed on the left side of the upper end of the main test equipment (1).
4. A cartridge pyrotechnic cable tester according to claim 1, characterized in that: A handle one (105) and a handle two (201) are fixedly installed on the front of the main test equipment (1) and the auxiliary test equipment (2) respectively.
5. A cartridge pyrotechnic cable tester according to claim 1, wherein: A heat dissipation opening (106) is arranged on the left end of the main test equipment (1), foot pads (107) are fixedly installed at the four corners of the bottom of the main test equipment (1), an insurance tube (108) and a grounding pile (109) are fixedly installed at the rear end of the main test equipment (1).
6. A cartridge pyrotechnic cable tester according to claim 1, characterized in that: An interface two (202) is arranged on the left end of the auxiliary test equipment (2), and a button (203) is arranged below the interface two (202).