CN109335018B - Automatic wire harness detection system and wire harness box for aircraft auxiliary power device - Google Patents
Automatic wire harness detection system and wire harness box for aircraft auxiliary power device Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B64F5/40—Maintaining or repairing aircraft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
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Abstract
飞机辅助动力装置线束自动检测系统和线束箱，所述系统包括测试台和线束箱；所述线束箱用于连接待测线束两端航空接头，并在所述测试台的控制下，分次将所述待测线束中每根导线的两端分别输出到所述测试台；所述测试台对输入的每根导线进行通断或电阻测量。本发明自动检测系统能代替人工自动完成对APU线束通断、电阻范围的检测，能极大的降低APU线束检测过程中的人力成本，提升检测的效率，而且无需辨别线束中各导线编号，避免了因插针编号磨损造成错检风险，提升准确性。
Aircraft auxiliary power unit wire harness automatic detection system and wire harness box, the system includes a test bench and a wire harness box; the wire harness box is used to connect the aviation connectors at both ends of the wire harness to be tested, and under the control of the test bench, the wire harness is Both ends of each wire in the wire harness to be tested are output to the test bench respectively; the test bench performs continuity or resistance measurement on each input wire. The automatic detection system of the present invention can replace manual work and automatically complete the detection of the APU wire harness continuity and resistance range, can greatly reduce the labor cost in the APU wire harness detection process, improve the detection efficiency, and does not need to identify the wire numbers in the wire harness to avoid This eliminates the risk of misdetection caused by pin number wear and improves accuracy.
Description
技术领域Technical field
本发明属于飞机维修技术领域，具体涉及一种飞机辅助动力装置(简称APU)线束自动检测系统，还涉及一种应用于该系统的线束箱。The invention belongs to the technical field of aircraft maintenance, and specifically relates to an aircraft auxiliary power unit (APU for short) wire harness automatic detection system, and also relates to a wire harness box used in the system.
背景技术Background technique
飞机辅助动力装置(APU)线束是APU正常运转的基础设备之一，主要由信号采集和作动器控制线路组成，用以辅助监控APU工作性能和控制APU工作状态。The aircraft auxiliary power unit (APU) wiring harness is one of the basic equipment for the normal operation of the APU. It is mainly composed of signal acquisition and actuator control circuits to assist in monitoring the working performance of the APU and controlling the working status of the APU.
当前APU线束检测，需要两位工作者手持万用表依照手册或工卡对线束中的每根导线逐根进行测量，以获取每根导线的通、断状况或电阻范围。Current APU wire harness testing requires two workers to hold multimeters and measure each wire in the wire harness one by one according to the manual or work card to obtain the on/off status or resistance range of each wire.
目前南航沈阳APU修理中心可进行维修的APU型号包括APS3200/APS2300/APS2600和131-9A、131-9B，年修理量2018年预计会突破200台，其中APS3200和131-9B预计有150台左右。APS3200有108根导线，131-9B有129根导线。Currently, the APU models that can be repaired by China Southern Airlines Shenyang APU Repair Center include APS3200/APS2300/APS2600 and 131-9A and 131-9B. The annual repair volume is expected to exceed 200 units in 2018, of which APS3200 and 131-9B are expected to be around 150 units. The APS3200 has 108 wires and the 131-9B has 129 wires.
利用现有的线束检测装置完成线束测量，不仅至少需要两位工作者一起工作而且花费时间较长，如APS3200的平均完成时间为40min，131-9B的平均完成时间为50min，造成工作效率低下，而且耗费人力。另外，航空接头(线束两端的接头)内插针排列密集，一般通过白色小字进行编号，但在线束长时间使用后，这些编号很容易磨损导致不易辨别，这就为工作者测量带来困难，导致误测等问题，在后期进一步检测结果出现不一致时，又造成返工，进而进一步增加了时间成本和人力成本，而且延误了APU的修理周期，故需探索出一种新的方案来替代上述方案提高APU线束检测的效率和准确性，并降低人力成本。Using the existing wire harness detection device to complete wire harness measurement not only requires at least two workers to work together, but also takes a long time. For example, the average completion time of APS3200 is 40 minutes, and the average completion time of 131-9B is 50 minutes, resulting in low work efficiency. And it’s labor intensive. In addition, the pins in the aviation connector (the connector at both ends of the wire harness) are densely arranged and are usually numbered in small white letters. However, after the wire harness is used for a long time, these numbers are easily worn and difficult to identify, which makes measurement difficult for workers. This leads to problems such as mistesting, and when further testing results are inconsistent in the later stage, it causes rework, which further increases time and labor costs, and delays the repair cycle of the APU. Therefore, a new solution needs to be explored to replace the above solution. Improve the efficiency and accuracy of APU wire harness detection and reduce labor costs.
发明内容Contents of the invention
本发明的第一发明目的在于，提供一种APU线束自动检测系统，该系统可检测APU线束中每根导线的通断或电阻,利用该系统能极大的降低APU线束检测过程中的人力成本，而且还能提升检测的效率和准确性。The first object of the present invention is to provide an APU wire harness automatic detection system that can detect the continuity or resistance of each wire in the APU wire harness. Using this system can greatly reduce the labor cost in the APU wire harness detection process. , and it can also improve the efficiency and accuracy of detection.
本发明的第二发明目的在于，提供一种上述系统中应用的飞机辅助动力装置线束箱。The second object of the present invention is to provide an aircraft auxiliary power unit wiring harness box used in the above system.
本发明的第一发明目的通过如下技术方案实现：一种飞机辅助动力装置线束自动检测系统，包括测试台和线束箱；The first invention object of the present invention is achieved through the following technical solutions: an automatic detection system for aircraft auxiliary power unit wire harness, including a test bench and a wire harness box;
所述线束箱用于连接待测线束两端航空接头，并在所述测试台的控制下，分次将所述待测线束中每根导线的两端分别输出到所述测试台；The wire harness box is used to connect the aviation connectors at both ends of the wire harness to be tested, and under the control of the test bench, output the two ends of each wire in the wire harness to be tested to the test bench in stages;
所述测试台对输入的每根导线进行通断或电阻测量；所述测试台中导线通断或电阻的测量电路包括测试仪、电源以及第一、第二继电器，所述电源与第一继电器串联后，再与第二继电器并联，最后与所述测试仪一起串联在同根导线的两输入端之间，所述测试台还包括PLC，所述PLC连接与所述第一、第二继电器，在检测导线通断时，控制所述第一继电器闭合，第二继电器断开，然后通过所述测试仪检测线路电压来判断，在检测导线电阻时，控制所述第一继电器断开而控制所述第二继电器闭合，然后通过所述测试仪检测线路电阻来判断。The test bench measures continuity or resistance of each input wire; the measurement circuit for wire continuity or resistance in the test bench includes a tester, a power supply, and first and second relays, and the power supply is connected in series with the first relay. Then, it is connected in parallel with the second relay, and finally it is connected in series with the tester between the two input ends of the same wire. The test bench also includes a PLC, and the PLC is connected to the first and second relays. When detecting the continuity of the wire, the first relay is controlled to be closed and the second relay is disconnected, and then the line voltage is detected by the tester to judge. When the wire resistance is detected, the first relay is controlled to be disconnected and the second relay is controlled to be disconnected. The second relay is closed, and then the tester detects the line resistance to determine.
所述测试仪推荐采用可编程万用表。The tester recommended is a programmable multimeter.
所述线束箱包括：The wiring harness box includes:
作为安装面板的基板，一组以上、每组包括用于与一待测线束两端航空接头分别以唯一方式(现有航空接头普遍具有限位设计，以便使其能以唯一方式与其对接接头相接，从而避免错接问题)对应相接的对接接头A、B，所述对接接头A、B内均设置与相应航空接头内插针对应的接点，所述对接接头安装在所述基板上；As the base plate of the installation panel, there are more than one group, and each group includes aviation connectors at both ends of a wire harness to be tested in a unique way (existing aviation connectors generally have a limit design so that they can be connected to their butt joints in a unique way. connection, thereby avoiding the problem of misconnection) corresponding butt joints A and B, the butt joints A and B are provided with contacts corresponding to the corresponding aviation joint insert pins, and the butt joints are installed on the base plate;
还包括继电器组，所述继电器组包括输入继电器组和输出继电器组；Also includes a relay group, the relay group includes an input relay group and an output relay group;
每个所述对接接头A中的每个接点分别连接一输入继电器的输入端，经所述输入继电器后输出到n个公共的输出端；Each contact point in each of the butt joints A is respectively connected to the input terminal of an input relay, and is output to n common output terminals through the input relay;
每个所述对接接头B中的每个接点分别连接一输出继电器的输出端，经所述输入继电器后连接到n个公共的输入端。Each contact point in each of the butt joints B is respectively connected to the output terminal of an output relay, and is connected to n common input terminals through the input relay.
所述继电器组还包括输入控制继电器组和输出控制继电器组；The relay group also includes an input control relay group and an output control relay group;
每个所述公共的输出端分别连接一输入控制继电器的输入端，经所述输入控制继电器后输出到一个总输出端；Each of the common output terminals is respectively connected to the input terminal of an input control relay, and is output to a general output terminal after passing through the input control relay;
每个所述公共的输入端分别连接一输出控制继电器的输出端，经所述输出控制继电器后连接到一个总输入端。Each of the common input terminals is respectively connected to the output terminal of an output control relay, and then connected to a general input terminal through the output control relay.
所述输入继电器组和输出继电器组分别包括一个以上的子继电器组；每个子继电器组包括n个继电器，各子继电器组中的继电器依次编号，各输入子继电器组中相同编号的输入继电器的输出端并联在一起，形成所述的n个公共的输出端，各输出子继电器组中相同编号的输出继电器的输入端并联在一起，形成所述的n个公共的输入端。The input relay group and the output relay group respectively include more than one sub-relay group; each sub-relay group includes n relays, the relays in each sub-relay group are numbered sequentially, and the output of the input relay with the same number in each input sub-relay group The terminals are connected in parallel to form the n common output terminals, and the input terminals of the output relays with the same number in each output sub-relay group are connected in parallel to form the n common input terminals.
相应的输入子继电器组和输出子继电器组排布位置对应。The corresponding input sub-relay group and output sub-relay group are arranged in corresponding positions.
本发明的第二发明目的通过如下技术方案实现：一种应用于上述系统的飞机辅助动力装置线束箱，包括:The second invention object of the present invention is achieved through the following technical solution: an aircraft auxiliary power unit wiring harness box applied to the above system, including:
作为安装面板的基板，一组以上、每组包括用于与一待测线束两端航空接头分别以唯一方式对应相接的对接接头A、B，所述对接接头A、B内均设置与相应航空接头内插针对应的接点，所述对接接头安装在所述基板上；As the base plate of the installation panel, there are more than one group, and each group includes butt joints A and B that are used to uniquely connect to the aviation connectors at both ends of a wire harness to be tested. The butt joints A and B are equipped with corresponding The aviation connector is inserted into a corresponding contact point, and the butt joint is installed on the base plate;
还包括继电器组，所述继电器组包括输入继电器组和输出继电器组；Also includes a relay group, the relay group includes an input relay group and an output relay group;
每个所述对接接头A中的每个接点分别连接一输入继电器的输入端，经所述输入继电器后输出到n个公共的输出端；Each contact point in each of the butt joints A is respectively connected to the input terminal of an input relay, and is output to n common output terminals through the input relay;
每个所述对接接头B中的每个接点分别连接一输出继电器的输出端，经所述输入继电器后连接到n个公共的输入端。Each contact point in each of the butt joints B is respectively connected to the output terminal of an output relay, and is connected to n common input terminals through the input relay.
所述继电器组还包括输入控制继电器组和输出控制继电器组；The relay group also includes an input control relay group and an output control relay group;
每个所述公共的输出端分别连接一输入控制继电器的输入端，经所述输入控制继电器后输出到一个总输出端；Each of the common output terminals is respectively connected to the input terminal of an input control relay, and is output to a general output terminal after passing through the input control relay;
每个所述公共的输入端分别连接一输出控制继电器的输出端，经所述输出控制继电器后连接到一个总输入端。Each of the common input terminals is respectively connected to the output terminal of an output control relay, and then connected to a general input terminal through the output control relay.
作为本发明推荐实施方案：所述输入继电器组和输出继电器组分别包括一个以上的子继电器组；每个子继电器组包括n个继电器，各子继电器组中的继电器依次编号，各输入子继电器组中相同编号的输入继电器的输出端并联在一起，形成所述的n个公共的输出端，各输出子继电器组中相同编号的输出继电器的输入端并联在一起，形成所述的n个公共的输入端。As a recommended embodiment of the present invention: the input relay group and the output relay group each include more than one sub-relay group; each sub-relay group includes n relays, and the relays in each sub-relay group are numbered sequentially. The output terminals of input relays with the same number are connected in parallel to form the n common output terminals, and the input terminals of the output relays with the same number in each output sub-relay group are connected in parallel to form the n common input terminals. end.
相应的输入子继电器组和输出子继电器组排布位置对应。The corresponding input sub-relay group and output sub-relay group are arranged in corresponding positions.
本发明设计使用线束箱，将APU线束航空接头与线束箱内与APU线束航空接头相适配的对接接头进行连接，通过PLC对继电器组的控制，将APU线束通过线束箱内部线路分次接入测试台，形成测试回路，自动实现对APU线束的分次自动测量，从而有效的提高工作人员的工作效率，无需辨别线束中各导线编号，避免了因插针编号磨损造成错检风险，可降低APU线束检测过程中的人力成本，缩短APU的维修周期，并提升准确性。The present invention is designed to use a wire harness box to connect the APU wire harness aviation connector with the butt joint in the wire harness box that matches the APU wire harness aviation connector. Through the control of the relay group by the PLC, the APU wire harness is connected in stages through the internal circuits of the wire harness box. The test bench forms a test loop to automatically measure the APU wire harness in batches, thereby effectively improving the work efficiency of the staff. There is no need to identify the wire numbers in the wire harness, avoiding the risk of misdetection due to pin number wear and tear, and reducing Labor costs in the APU wire harness inspection process, shortening the APU maintenance cycle, and improving accuracy.
上述PLC、万用表测试程序依据CMM手册为标准设计，设计软件为Labview和OPC。The above-mentioned PLC and multimeter test procedures are designed based on the CMM manual as standard, and the design software is Labview and OPC.
有益效果：Beneficial effects:
1)本发明自动检测系统能代替人工自动完成对APU线束通断、电阻范围的检测，能极大的降低APU线束检测过程中的人力成本，提升检测的效率：如通过线束箱将待测的100多根导线，分成15组，每次测量15组中的一路，完成所有导线的测量，APS3200平均测量时间为2min，131-9B平均测量时间为5min；利用本发明完成APU线束测试，只需将APU线束航空接头与线束箱中相应对接接头对应插接，无需辨别线束中各导线编号，避免了因插针编号磨损造成错检风险，提升准确性。1) The automatic detection system of the present invention can replace manual work and automatically complete the detection of the APU wire harness continuity and resistance range, which can greatly reduce the labor cost in the APU wire harness detection process and improve the detection efficiency: for example, through the wire harness box, the to-be-tested More than 100 wires are divided into 15 groups. Each time one of the 15 groups is measured, the measurement of all wires is completed. The average measurement time of APS3200 is 2 minutes, and the average measurement time of 131-9B is 5 minutes. Using the present invention to complete the APU wire harness test only requires Plug the APU wire harness aviation connector into the corresponding butt connector in the wire harness box. There is no need to identify the wire numbers in the wire harness. This avoids the risk of misdetection due to pin number wear and improves accuracy.
2)本发明线束箱各子继电器组将待测的100多根导线分成15组，每次测量1组，完成所有测量，相比于一次将全部导线接入测试箱，分组后只需引出1根连接线束与测试台相连，减少接入测试箱插头个数，减少设备维护时间，减少耗材使用数量和减少工作人员更换线束箱的时间(一个型号一个线束箱，每次更换，只需将线束箱与测试箱的连接导线断开，更换另外一个型号的线束箱就可以，如果100多根线都接入到测试箱，每次更换线束箱时，需要断开100多根导线，非常耗时)；2) Each sub-relay group of the wiring harness box of the present invention divides more than 100 wires to be tested into 15 groups. One group is measured at a time to complete all measurements. Compared with connecting all the wires to the test box at one time, only 1 wire needs to be led out after grouping. The only connecting wire harness is connected to the test bench, reducing the number of plugs in the test box, reducing equipment maintenance time, reducing the number of consumables used and reducing the time for staff to replace the wire harness box (one wire harness box for each model, each replacement only needs to remove the wire harness If the connection wire between the box and the test box is disconnected, just replace it with another model of wiring harness box. If more than 100 wires are connected to the test box, more than 100 wires need to be disconnected each time the wiring harness box is replaced, which is very time-consuming. );
3)本发明线束箱各子继电器组中的继电器依次编号，各输入子继电器组中相同编号的输入继电器的输出端并联在一起，各输出子继电器组中相同编号的输出继电器的输入端并联在一起，以便依次控制相应的输入子继电器组和输出子继电器组通断，即可实现将导线分组接入所述测试台，使控制过程更为简单。3) The relays in each sub-relay group of the wiring harness box of the present invention are numbered in sequence, the output terminals of the input relays with the same number in each input sub-relay group are connected in parallel, and the input terminals of the output relays with the same number in each output sub-relay group are connected in parallel. Together, in order to sequentially control the corresponding input sub-relay group and output sub-relay group on and off, the wires can be connected to the test bench in groups, making the control process simpler.
附图说明Description of drawings
图1为实施例一的飞机辅助动力装置线束自动检测系统的电路原理框图；Figure 1 is a circuit principle block diagram of the aircraft auxiliary power unit wire harness automatic detection system according to Embodiment 1;
图2为实施例一的飞机辅助动力装置线束箱的电路原理图；Figure 2 is a circuit schematic diagram of the aircraft auxiliary power unit wiring harness box of Embodiment 1;
图3为实施例一的飞机辅助动力装置线束箱中输入继电器组、输出继电器组方案一的排布图；Figure 3 is an arrangement diagram of the input relay group and the output relay group in the aircraft auxiliary power unit wiring harness box according to the first embodiment;
图4为实施例一的飞机辅助动力装置线束箱中输入继电器组、输出继电器组方案二的排布图。Figure 4 is an arrangement diagram of the input relay group and the output relay group in the second embodiment of the aircraft auxiliary power unit wiring harness box.
具体实施方式Detailed ways
实施例一Embodiment 1
实施例一的飞机辅助动力装置线束自动检测系统如图1所述，包括测试台和线束箱。The aircraft auxiliary power unit wire harness automatic detection system of Embodiment 1 is as shown in Figure 1 and includes a test bench and a wire harness box.
线束箱用于连接待测线束两端航空接头，并在测试台的控制下，分次将待测线束中每根导线的两端分别输出到测试台。本实施例中，线束箱每次将待测线束中的一根导线的两端分别输出到测试台。The wire harness box is used to connect the aviation connectors at both ends of the wire harness to be tested, and under the control of the test bench, output both ends of each wire in the wire harness to be tested to the test bench in batches. In this embodiment, the wire harness box outputs both ends of a wire in the wire harness to be tested to the test bench each time.
测试台用于对输入的每根导线进行通断或电阻测量。测试台中导线通断或电阻的测量电路包括可编程万用表G、24VDC电源以及第一、第二继电器，电源与第一继电器串联后，再与第二继电器并联，最后与G一起串联在同根导线的两输入端之间，所述测试台还包括PLC，PLC连接与第一、第二继电器，在检测导线通断时，控制第一继电器闭合，第二继电器断开，然后通过测试仪检测线路电压来判断，在检测导线电阻时，控制第一继电器断开而控制第二继电器闭合，然后通过测试仪检测线路电阻来判断。本实施例包括一路上述导线通断或电阻的测量电路，在其他实施例中，可配置两路以上的上述导线通断或电阻的测量电路，具体根据通过线束箱单次接入测试台的导线数量而定。The test bench is used to perform continuity or resistance measurements on each wire of the input. The measurement circuit for conductor continuity or resistance in the test bench includes a programmable multimeter G, a 24VDC power supply, and the first and second relays. After the power supply is connected in series with the first relay, it is then connected in parallel with the second relay, and finally connected in series with G on the same wire. Between the two input terminals, the test bench also includes a PLC. The PLC is connected to the first and second relays. When detecting the continuity of the wire, it controls the first relay to close and the second relay to open, and then detects the line voltage through the tester. To judge, when detecting the wire resistance, control the first relay to open and control the second relay to close, and then use the tester to detect the line resistance to judge. This embodiment includes one circuit for measuring the continuity or resistance of the above-mentioned wires. In other embodiments, more than two circuits for measuring the continuity or resistance of the above-mentioned wires can be configured, specifically according to the wires that are connected to the test bench in a single time through the wiring harness box. Quantity depends.
上述线束箱包括作为安装面板的基板，一组以上、每组包括用于与一待测线束两端航空接头分别以唯一方式对应相接的对接接头A、B，对接接头A、B内均设置与相应航空接头内插针对应的接点，基板建议选取绝缘材质如电木制成，对接接头安装在基板上。The above-mentioned wiring harness box includes a base plate as an installation panel. There are more than one group, and each group includes butt joints A and B that are used to uniquely connect to the aviation connectors at both ends of a wire harness to be tested. Butt joints A and B are both provided. For the contacts corresponding to the corresponding aviation connector inserts, it is recommended that the base plate be made of insulating material such as bakelite, and the butt joint is installed on the base plate.
线束箱还包括继电器组，继电器组包括输入继电器组和输出继电器组以及输入控制继电器组和输出控制继电器组。本实施例中，输入继电器组和输出继电器组分别包括16个子继电器组。16个输入子继电器组编号分别为S1-S16，16个输出子继电器组编号分别为S17-S32。其中，S16和S32在本实施例中分别作为了备用子继电器组。每个子继电器组由16个继电器组成。上述输入控制继电器组和输出控制继电器组也分别由16个继电器组成。The wiring harness box also includes a relay group, which includes an input relay group and an output relay group, as well as an input control relay group and an output control relay group. In this embodiment, the input relay group and the output relay group each include 16 sub-relay groups. The 16 input sub-relay group numbers are S1-S16, and the 16 output sub-relay group numbers are S17-S32. Among them, S16 and S32 are respectively used as backup sub-relay groups in this embodiment. Each sub-relay group consists of 16 relays. The above-mentioned input control relay group and output control relay group are also composed of 16 relays respectively.
对于每组对接接头A、B，如图1所示，对接接头A依次通过S1-S16，输入控制继电器组输出到测试台，对接接头B依次通过S17-S32，输出控制继电器组输出到测试台。For each group of butt joints A and B, as shown in Figure 1, butt joint A passes through S1-S16 in sequence, and the input control relay group is output to the test bench. Butt joint B passes through S17-S32 in sequence, and the output control relay group is output to the test bench. .
具体如图2所示，各子继电器组中的继电器依次编号1-16，每个对接接头A中的每个接点分别连接一输入子继电器的输入端，然后，各输入子继电器组中相同编号的输入子继电器的输出端并联在一起，如S1-1与S16-1的输出端并联，如此即形成16个公共的输出端，同样，每个对接接头B中的每个接点分别连接一输出子继电器的输出端，各输出子继电器组中相同编号的输出子继电器的输入端并联在一起，如此形成16个公共的输入端。PLC通过依次控制相应的输入子继电器组和输出子继电器组导通，一次将16根导线的两端分别接入输入控制继电器组和输出控制继电器组中的每个继电器，再通过对输入控制继电器组和输出控制继电器的控制，选择其中一根导线的两端分别输出到总输出端和总输入端，以便输出到测试台。As shown in Figure 2, the relays in each sub-relay group are numbered 1-16 in sequence. Each contact in each docking joint A is connected to the input end of an input sub-relay. Then, the same number in each input sub-relay group The output terminals of the input sub-relays are connected in parallel, such as the output terminals of S1-1 and S16-1 are connected in parallel, thus forming 16 common output terminals. Similarly, each contact in each butt joint B is connected to an output The output terminals of the sub-relays and the input terminals of the same numbered output sub-relays in each output sub-relay group are connected in parallel, thus forming 16 common input terminals. The PLC sequentially controls the conduction of the corresponding input sub-relay group and output sub-relay group, and connects both ends of the 16 wires to each relay in the input control relay group and the output control relay group respectively, and then controls the input control relay For group and output control relay control, select both ends of one of the wires to be output to the total output terminal and the total input terminal respectively for output to the test bench.
由上可见，本实施例线束箱每次仅将待测线束中的一根导线的两端分别输出到测试台。在线束箱仅包括上述输入继电器组和输出继电器组时，可实现一次将16根导线的两端同时输出到测试台。此时测试台内可设置16路上述导线通断或电阻的测量电路，也可通过增设上述输入、输出控制继电器组，而通过只设置一路导线通断或电阻的测量电路分次完成16根导线的通断或电阻测量。It can be seen from the above that the wiring harness box of this embodiment only outputs both ends of one wire in the wiring harness to be tested to the test bench each time. When the wiring harness box only includes the above-mentioned input relay group and output relay group, both ends of 16 wires can be output to the test bench at the same time. At this time, the test bench can be equipped with 16 measurement circuits for the continuity or resistance of the above-mentioned wires, or by adding the above-mentioned input and output control relay groups, and setting up only one measurement circuit for the continuity or resistance of the wires to complete the 16 wires in stages. Continuity or resistance measurement.
图3和图4示出了飞机辅助动力装置线束箱中输入继电器组、输出继电器组的两种排布方案。S1与S17对应，构成相应的一组输入子继电器组和输出子继电器组，S2与S18，S3与S19依次类推。Figures 3 and 4 show two arrangements of input relay groups and output relay groups in the aircraft auxiliary power unit wiring harness box. S1 corresponds to S17, forming a corresponding input sub-relay group and output sub-relay group, S2 and S18, S3 and S19, and so on.
本实施例中采用的继电器的额定电压为24vDC。PLC采用西门子s7-200。The rated voltage of the relay used in this embodiment is 24vDC. The PLC uses Siemens s7-200.
Claims (4)
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