CN113514726B - Complete machine cable detection system and method - Google Patents
Complete machine cable detection system and method Download PDFInfo
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- CN113514726B CN113514726B CN202111077107.2A CN202111077107A CN113514726B CN 113514726 B CN113514726 B CN 113514726B CN 202111077107 A CN202111077107 A CN 202111077107A CN 113514726 B CN113514726 B CN 113514726B
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Abstract
The invention relates to a complete machine cable detection system and a complete machine cable detection method. The number of the system slave machines is configured according to the number of the cables to be detected, the system slave machines are distributed on the tested machine, and the cables to be detected are connected to the system slave machines according to the principle of proximity, so that ten thousands of points can be simultaneously accessed into the detection system, and the problem of low detection point number in the prior art is solved. The system host is used for transmitting the test command and the excitation source to the system slave, and the system slave is used for automatically detecting the cable to be detected according to the test command and the excitation source, so that the automatic detection of tens of thousands of points can be realized, and the number of detection points is greatly increased.
Description
Technical Field
The invention relates to the technical field of aviation measurement and control, in particular to a complete machine cable detection system and a complete machine cable detection method.
Background
The cable detection is an important work in the process of airplane final assembly, is an important component for ensuring the circuit function integrity and reliability of an airplane power system, an avionic system, a flight control system, a hydraulic/undercarriage system, a fuel system, an environmental control system, a power supply and other systems, and is an important node which must be completed before each system can successfully perform a function test. With the rapid development of aviation technology, signal cross-linking between systems becomes more and more complicated, so that manual testing cannot complete such a difficult task, and therefore, improvement of cable testing means is very necessary. With the development of the automatic testing technology, the adoption of an automatic testing means can greatly reduce the complexity of the test and reduce the testing time, and the development direction of the test and maintenance of the equipment system is provided.
At present, a cable detection technology is mature, but multi-channel cable detection aiming at thousands or even tens of thousands of points of the whole machine is difficult, and the simultaneous access of the tens of thousands of points to a detection system for detection cannot be realized.
Disclosure of Invention
The invention aims to provide a complete machine cable detection system and a complete machine cable detection method, which can realize that tens of thousands of points are simultaneously accessed into a detection system for detection.
In order to achieve the purpose, the invention provides the following scheme:
a complete machine cable detection system comprises a system host and a system slave; the system host and the system slave are connected in cascade; the system slave machines are distributed on the tested machine; the number of the system slave machines is configured according to the number of the cables to be tested;
the cables to be tested are connected to the system slave machines according to the principle of proximity;
the system host is used for transmitting a test command and an excitation source to the system slave; the system slave is used for automatically detecting the cable to be detected according to the test command and the excitation source to obtain detection data and transmitting the detection data to the system host; the system host is also used for obtaining a detection result according to the detection data and the data of the excitation source.
A complete machine cable detection method comprises the following steps:
acquiring a current detection function and parameter information of a cable to be detected which needs to be detected;
outputting a corresponding excitation source to a system slave according to the detection function, and outputting a corresponding test command to the system slave according to the parameter information;
acquiring detection data acquired by the system slave under the test command when the excitation source is connected with the cable to be tested;
and obtaining a detection result according to the detection data and the data of the excitation source.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a complete machine cable detection system and a complete machine cable detection method. The number of the system slave machines is configured according to the number of the cables to be detected, the system slave machines are distributed on the tested machine, and the cables to be detected are connected to the system slave machines according to the principle of proximity, so that ten thousands of points can be simultaneously accessed into the detection system, and the problem of low detection point number in the prior art is solved. The system host is used for transmitting the test command and the excitation source to the system slave, and the system slave is used for automatically detecting the cable to be detected according to the test command and the excitation source, so that the automatic detection of tens of thousands of points can be realized, and the number of detection points is greatly increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of an overall structure of a detection system provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a cascade cable according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a patch cable according to embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a detection system provided in embodiment 1 of the present invention;
fig. 5 is a schematic structural diagram of a test motherboard provided in embodiment 1 of the present invention;
fig. 6 is a schematic structural diagram of a matrix board card provided in embodiment 1 of the present invention;
fig. 7 is a flowchart of a detection method provided in embodiment 2 of the present invention.
Description of the symbols:
1-a system host; 2-a tandem cable; 3-system slave; 4-patch cables; 5-cable to be tested; 11-a first power supply module; 12-a human-computer interaction module; 13-testing the mainboard; 31-a second power supply module; 32-slave backplane; 33-slave motherboard; 34-a matrix unit module; 35-a test interface module; 131-a power supply processing module; 132-an FPGA module; 133-a master control unit; 134-a communication module; 135-an excitation source module; 136-relay channel switching module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a complete machine cable detection system and a complete machine cable detection method, which can realize that tens of thousands of points are simultaneously accessed into a detection system for detection.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example 1:
the present embodiment is configured to provide a complete machine cable detection system, as shown in fig. 1, where the detection system includes a system master 1 and a system slave 3, and the system master 1 and the system slave 3 are connected in cascade. The system slaves 3 are distributed on the tested machine, and the number of the system slaves 3 is configured according to the number of the cables 5 to be tested. Preferably, when the number of the system slaves 3 is multiple, the multiple system slaves 3 are distributed near the interface of the cable 5 to be tested of the airplane to be tested, and the multiple cables 5 to be tested are connected to the system slaves 3 according to the principle of proximity, so that ten thousands of points can be accessed to the detection system at the same time.
The system host 1 is used for transmitting a test command and an excitation source to the system slave 3, and the system slave 3 is used for automatically detecting the cable 5 to be detected according to the test command and the excitation source to obtain detection data and transmitting the detection data to the system host 1. The system host 1 is also used for obtaining a detection result according to the detection data and the data of the excitation source.
In the embodiment, the number of the system slaves 3 is set according to the number of the cables 5 to be detected, the system slaves 3 are distributed on the tested machine, and the cables 5 to be detected are connected to the system slaves 3 according to the principle of proximity, so that ten thousands of points can be simultaneously accessed into the detection system, and the problem of low number of detection points in the prior art is solved. In addition, the system host 1 also transmits a test command and an excitation source to the system slave 3, the system slave 3 performs automatic detection on the cable 5 to be detected according to the test command and the excitation source to obtain detection data, the detection data are transmitted to the system host 1, and the system host 1 obtains a detection result according to the detection data and the excitation source data, so that automatic detection of tens of thousands of points can be realized, and the number of detection points is greatly increased.
The detection system of the embodiment is implemented based on a distributed architecture, and adopts a cascade networking operation mode, wherein one system host 1 is connected with one or more system slaves 3. Specifically, as shown in fig. 1, the system master 1 is connected to one system slave 3 of the plurality of system slaves 3, and the system slaves 3 are connected in cascade, so that cascade connection between the system master 1 and the system slaves 3 and between the system slaves 3 and the system slaves 3 is realized, and cascade networking is performed. More specifically, in this embodiment, a cascade connection cable 2 is used to cascade between one system master 1 and one system slave 3, and a cascade connection cable 2 is used to cascade between the system slave 3 and the system slave 3, and data interaction is performed in communication manners such as LAN, RS485/422, CAN, and the like, and the system master 1 transmits the excitation source to each system slave 3 through the cascade connection cable 2.
Further, as shown in fig. 2, as connection cables between the system master 1 and the system slave 3 and between the system slave 3 and the system slave 3, the cascade cable 2 has two functional cables, namely a communication cable and an excitation source cable, and the communication cable and the excitation source cable are isolated by a simulated ground wire wrapping isolation method. The excitation source cable is used for transmitting an excitation source to the system slave 3, and the communication cable is used for realizing communication between the system master 1 and the system slave 3. In addition, the cascade cable 2 further includes a power supply cable for realizing power transmission.
Since each system slave 3 is configured with a uniform test interface and the connectors of the cables 5 to be tested are various, in order to realize the connection between the cables 5 to be tested and the system slaves 3, the present embodiment adds the patch cables 4 to connect the cables 5 to be tested to the system slaves 3, each cable 5 to be tested is connected to the system slave 3 through one patch cable 4, and one or more cables 5 to be tested are configured with a unique patch cable 4, that is, one patch cable 4 corresponds to one or more cables 5 to be tested, and a plurality of cables 5 to be tested can share one patch cable 4.
When the complete machine cable is detected, the position information and the parameter information of each cable 5 to be detected need to be manually input, more time can be consumed by inputting the parameter information of the cable 5 to be detected and the information such as the connecting position of the cable 5 to be detected into a detection system, the problems of false detection, missing detection and the like caused by human factors can be increased, and meanwhile, the efficiency of complete machine cable detection is reduced. Based on this problem, in this embodiment, the structure of the patch cable 4 is improved, as shown in fig. 3, the patch cable 4 includes cable patch to connect the cables 5 to be tested using different types of connectors into the system slave 3, an address module is further added to the patch cable 4, the system slave 3 reads the address of the cable 5 to be tested through the patch cable 4 and transmits the address to the system host 1, the system host 1 calls parameter information corresponding to the cable 5 to be tested according to the address, the parameter information includes the name, specification, and correspondence of the cable 5 to be tested, and the correspondence refers to the correspondence between each core of the cable 5 to be tested and each test point in the test interface. An address module is added in the switching cable 4, when the cable 5 to be tested and the switching cable 4 are connected into the system slave 3, the system slave 3 automatically identifies the address module of the switching cable 4, the address information is uploaded to the system host 1, and the system host 1 calls parameter information such as the name, the specification model and the corresponding relation of the cable 5 to be tested through the fed back address information.
In this embodiment, through improving switching cable 4, increase address module in switching cable 4, during cable 5 that awaits measuring is connected to complete machine cable detecting system through switching cable 4, complete machine cable detecting system automatic identification awaits measuring 5 address information of cable, and its parameter information of automatic transfer uses, practices thrift the preparation time before the detection, improves detection efficiency, reduces the influence of human factor.
In this embodiment, one system master 1 and a plurality of system slaves 3 are cascaded, and the devices are connected to each other in a cascade manner, wherein the system master 1 performs data exchange and excitation source connection with the system slaves 3 through a cascade cable 2, and the system slaves 3 are connected with a cable to be tested 5 through a patch cable 4. The system host 1 sends a test command to the system slave 3, the system slave 3 acts according to the test command to connect an excitation source to a cable 5 to be detected, the excitation source output by the system host 1 is connected to the cable 5 to be detected through a cascade cable 2, the system slave 3 and a transfer cable 4, the system slave 3 uploads collected detection data to the system host 1, and data of the excitation source output by the system host 1 and the detection data fed back by the system slave 3 are calculated, displayed and stored in the system host 1.
The following describes specific structures and functions of the system master 1 and the system slave 3:
the system host 1 runs detection software for man-machine interaction, has the functions of resource import, data storage, analysis and the like, and can import resource information such as the corresponding relation between the wire core of the cable 5 to be tested and the test point of the test interface into the test system in the file forms of Excel, Word and the like, so that the resource import function is realized. Meanwhile, the system is used as a system main control unit, has the functions of excitation source output, self-learning logic control, data analysis and calculation and the like, performs data interaction with the system slave 3 through communication modes such as LAN, RS485/422, CAN and the like, and performs excitation source transmission through the switching cable 4.
As shown in fig. 4, the system host 1 is mainly used for running detection software to perform human-computer interaction, and simultaneously performing excitation source output and data calculation and storage. The system host 1 comprises a first power module 11, a man-machine interaction module 12 and a test mainboard 13, wherein the first power module 11 is mainly used for converting commercial power into power used by the whole cable detection system, and the first power module 11 is respectively electrically connected with the man-machine interaction module 12 and the test mainboard 13 to supply power to the man-machine interaction module 12 and the test mainboard 13. The human-computer interaction module 12 is mainly used for functions of resource information import, detection function selection, data storage, detection result display and export and the like. The test mainboard 13 is mainly used for system logic control, excitation source output and data calculation functions. The man-machine interaction module 12 is in communication connection with the test mainboard 13, the test mainboard 13 acquires the current detection function and resource information selected by an operator through the man-machine interaction module 12, and the man-machine interaction module 12 acquires and stores the detection result, the detection data and the excitation source data through the test mainboard 13 to display and export the detection result.
As shown in fig. 5, the test motherboard 13 includes a main control unit 133, an FPGA module 132, an excitation source module 135, and a relay channel switching module 136. The main control unit 133 is respectively connected to the FPGA module 132 and the relay channel switching module 136 in a communication manner, and the FPGA module 132 is further connected to the excitation source module 135.
The stimulus source module 135 includes a plurality of types of stimulus source function cards, each disposed in a function card slot and corresponding to a function card address. The excitation source function cards are configured according to the required detection function, and different excitation source function cards are configured with different function card addresses, wherein the excitation source function cards comprise constant current source function cards, high voltage direct current source function cards, high voltage alternating current source function cards, component detection function cards and the like, different tests are performed on the cable 5 to be detected by adopting different excitation source function cards, for example, the constant current source function cards are used for conducting tests of the cable 5 to be detected, the high voltage direct current source function cards are used for conducting insulation tests of the cable 5 to be detected, the high voltage alternating current source function cards are used for conducting voltage withstanding tests of the cable 5 to be detected, and further, the complete machine cable detection system can be used for conducting, insulating and voltage withstanding tests after complete machine cables are paved in a final assembly production site.
The relay channel switching module 136 is connected to the card slot relays of all the functional card slots, and is configured to open the corresponding card slot relays under the control of the main control unit 133.
The FPGA module 132 obtains the type of the stimulus source function card in each function card slot by reading the function card address, and transmits the type to the main control unit 133. The main control unit 133 is configured to determine the excitation source function card to be driven according to the current detection function, control the FPGA module 132 to drive and open the excitation source function card to be driven, and control the relay channel switching module 136 to open the card slot relay corresponding to the excitation source function card to be driven, so as to output the excitation source corresponding to the current detection function to the system slave 3.
In addition, the test motherboard 13 of this embodiment further includes a power processing module 131 and a communication module 134, wherein the power processing module 131 is mainly used for providing a power required by each module of the test motherboard 13 and an isolated power required by the excitation source module 135 and the communication module 134. The communication module 134 is mainly used for implementing test command transmission and data interaction between the master control unit 133 and the system slaves 3 and the human-computer interaction module 12. The FPGA module 132 is mainly used for driving control and data processing of the excitation source module 135, and performs data interaction with the main control unit 133, and the FPGA module 132 obtains the type of the excitation source function card in each function card slot by reading the function card address, and uploads the excitation source function card type corresponding to the function card slot to the main control unit 133. The main control unit 133 is mainly used for logic control and data processing of the whole detection system, and includes a control relay channel switching module 136 for selecting excitation source output, performing data interaction with the FPGA module 132, and performing test command transmission and data interaction with the system slave 3 and the human-computer interaction module 12 through the communication module 134. After the man-machine interaction module 12 selects the current detection function, the main control unit 133 performs data interaction with the FPGA module 132, the FPGA module 132 drives to turn on the corresponding excitation source module 135, and the main control unit 133 simultaneously controls the relay channel switching module 136 to turn on the card slot relay of the required excitation source function card, and outputs the required excitation source to the cascade cable 2 for the system slave 3 to use.
As shown in fig. 4, the system slave 3 includes a slave main board 33, a matrix unit module 34, and a test interface module 35. The matrix unit module 34 includes a plurality of matrix board cards, the test interface module 35 includes a plurality of test interfaces, the matrix board cards are connected with the test interfaces in a one-to-one correspondence manner, the test interfaces are connected with the cables 5 to be tested in a one-to-one correspondence manner, that is, each cable 5 to be tested is connected with one matrix board card through one test interface, and then the cables 5 to be tested are detected through the corresponding matrix board cards. The test interface is connected with a cable 5 to be tested through the transfer cable 4. The slave main board 33 is in communication connection with the matrix unit module 34, and the slave main board 33 is configured to receive a test command sent by the system host 1, control a corresponding matrix board card to work according to the test command, connect the excitation source to the cable 5 to be tested, and acquire the detection data of the cable 5 to be tested.
The system slave 3 further includes a second power module 31 and a slave backplane 32, where the second power module 31 is mainly used for power supply of the system slave 3, and the slave backplane 32 is mainly used for connection of a cascade interface, a slave main board 33 and a matrix unit module 34, so as to implement communication connection between the slave main board 33 and the system master 1, the matrix unit module 34 and other system slaves 3. The slave backplane 32 is designed with a universal slot, which is a connection channel between the slave motherboard 33 and the matrix unit module 34, to switch the excitation source to the matrix unit module 34 and collect the detection data. The slave motherboard 33 interacts with the system host 1 through the slave backplane 32 to perform test commands and test data. The slave main board 33 receives the test command of the system host 1 through the communication cable in the cascade cable 2, completes the analysis, opens the excitation source channel of the slave backplane 32 in the test command, simultaneously issues the test command to the matrix unit module 34 through the slave backplane 32 to perform the detection channel switching, and finally encodes the acquired detection data and the related information and uploads the encoded detection data and the related information to the system host 1. The matrix unit module 34 is mainly used for detecting switching of channels, and controls the corresponding matrix board card to work according to a test command transmitted from the slave motherboard 33, so as to detect the corresponding cable 5 to be tested. The matrix unit module 34 also has a function of inquiring the address of the cable to be tested to obtain the address of the cable 5 to be tested.
As shown in fig. 6, the matrix board card includes a relay matrix composed of a plurality of relays, and T1, T2, T3. One end of each relay is connected with one test point IN the test interface corresponding to the matrix board card, and the other end of each relay is respectively connected with an excitation source anode IN1, an excitation source cathode OUT1, a collection anode IN2 and a collection cathode OUT 2. IN1 and OUT1 are connected to the excitation source cables IN the cascade cable 2 via the slave backplane 32, and IN2 and OUT2 are connected to the slave motherboard 33. Each test point corresponds to one core of the cable 5 to be tested.
The slave motherboard 33 is further configured to control a relay in the corresponding matrix board card to operate according to the test command, connect the excitation source to one wire core of the cable 5 to be tested, collect detection data of the wire core, and further implement detection of the single wire core.
Aiming at the problems of few detection points, low detection efficiency, wrong detection, missed detection and the like in the prior art, the embodiment provides an implementation method of a complete machine cable detection system from ideas of distributed test, automatic detection, four-wire system resistance detection, insulation and voltage resistance detection, component detection, modularization and the like.
The software and hardware architecture of the complete machine cable detection system provided by the embodiment is very flexible and reliable. The hardware is distributed at each position of a tested system such as an airplane by taking the system slave 3 as a test interface, and meanwhile, different numbers of system slaves 3 can be configured according to the number of the points to be tested, so that the automatic detection of tens of thousands of detection points can be realized. The system host 1 is provided with a universal functional card slot, different excitation source function board cards can be configured according to requirements, the system can automatically identify excitation source board card functions and card slot position information, and the system has high universality. The specification parameters of various cables are recorded in the software, automatically stored in a database, and operations such as adding and changing can be performed through an administrator mode. The matrix unit module 34 and the switching cable 4 in the system slave 3 have an address identification function, the detection system can automatically identify parameters such as specification and model of the cable 5 to be detected and the position of the cable connected in the detection system through address identification and a software database, namely a blind plugging function, the number of times of parameter entry operation of operators is reduced, preparation work before detection is reduced, the detection time of the whole machine is shortened, and the problems of parameter entry errors and the like caused by human factors are avoided.
Example 2:
the embodiment is used to provide a complete machine cable detection method, which works with the detection system described in embodiment 1, and as shown in fig. 7, the detection method includes:
s1: acquiring a current detection function and parameter information of a cable to be detected which needs to be detected;
s2: outputting a corresponding excitation source to a system slave according to the detection function, and outputting a corresponding test command to the system slave according to the parameter information;
s3: acquiring detection data acquired by the system slave under the test command when the excitation source is connected with the cable to be tested;
s4: and obtaining a detection result according to the detection data and the data of the excitation source.
Specifically, the detection method using the detection system shown in fig. 1 to 6 for detection includes: when the cable 5 to be tested is connected with the switching cable 4, the system slave 3 is connected, the system slave 3 automatically acquires the address in the switching cable 4 and uploads the address data to the system host 1, and the system host 1 calls the corresponding parameter information such as the specification model and the corresponding relation of the cable in the database according to the address information after receiving the address data.
The operator selects the detection function or selects one-key detection (i.e. all detection functions are detected in sequence) through human-computer interaction, then starts the test, the human-computer interaction module 12 sends the current detection function and the parameter information of the corresponding cable 5 to be tested in the database to the test mainboard 13, after the test mainboard 13 receives the detection function information and the parameter information of the cable 5 to be tested, generating a test command according to the parameter information, sending the corresponding test command to the system slave 3 through the cascade cable 2, the slave main board 33 in the system slave 3 analyzes and processes the command, operates the corresponding relay on the slave back board 32, connects the excitation source into the corresponding matrix board card, and meanwhile, distributing commands to the matrix board card in the matrix unit module 34, operating the corresponding relay, and connecting two ends of a certain wire core in the cable 5 to be detected to the detection system. Meanwhile, the main control unit 133 sends a command to the FPGA module 132, the FPGA module 132 drives the excitation source function card in the corresponding function card slot in the excitation source module 135 to output an excitation source, the excitation source function card collects parameters of the output excitation source and feeds the parameters back to the FPGA module 132, and the FPGA module 132 uploads the parameters of the output excitation source to the main control unit 133. Then, the main control unit 133 controls the relay channel switching module 136 to open the corresponding channel, so that the excitation source is output to the cascade cable 2, the cascade cable 2 is connected to the system slave 3, the system slave 3 is transmitted to the matrix board card through the slave backplane 32, and is transmitted to the core of the cable 5 to be tested through the operated relay. After the excitation source loop is stabilized after a certain time delay, the slave mainboard 33 acquires data through the IN2 and the OUT2 lines and uploads the acquired data to the system host 1, the main control unit 133 IN the system host 1 performs calculation processing by combining the data fed back by the system slave 3 and the output excitation source data fed back by the FPGA module 132, uploads the calculated detection result to the human-computer interaction module 12, and the human-computer interaction module 12 compares the detection result with the standard value of the cable and displays and stores the result. The whole cable detection system can be configured with a plurality of slave systems, and two ends of the cable 5 to be detected can be connected to the same system slave 3 or different system slaves 3. When the test board 13 is connected to different system slaves 3, the test board 13 reads data collected by the two system slaves 3, and performs calculation according to the data of the two system slaves 3.
The system host 1 further has a self-learning function and is mainly used for detecting parameters of cable correspondence, under the condition that the cable correspondence is unknown, two ends of the cable are connected to any two test ports of the detection system, the main control unit 133 sends a command to the FPGA module 132, the FPGA module 132 drives the excitation source function cards in the corresponding function card slots in the excitation source module 135 to output, meanwhile, the excitation source function cards collect and output parameters of the excitation sources and feed back the parameters to the FPGA module 132, the FPGA module 132 uploads the output parameters of the excitation sources to the main control unit 133, and the test mainboard 13 operates the relays corresponding to the excitation sources in the relay channel switching module 136, so that the excitation sources are output to the cascade cables 2. The detection system automatically identifies the address of a test port connected with the cable 5 to be tested, the test mainboard 13 sends a command to operate a relay of a matrix board card in the matrix unit module 34 connected with one end of the cable 5 to be tested, the system slave 3 uploads the acquired data to the system host 1, the system host 1 analyzes and processes the data, when no cable core exists, the relay which is opened before is disconnected, the next relay in the matrix board card in the matrix unit module 34 is operated, the acquired data is calculated and whether a cable core exists is judged, until the calculated data is judged to be a cable core after a certain relay is operated, and the calculated data is stored by the system host 1. Then the test main board 13 sends a command to operate and connect half of the relays closed by the matrix board cards in the matrix unit module 34 at the other end of the cable 5 to be tested, the system slave 3 uploads the acquired data to the system host 1, the system host 1 calculates and compares the data with the parameters stored before, when the parameter does not conform to the specification, the other end of the wire core in the cable 5 to be tested is not connected to the contact point connected with the closed half of the relay, the relay which is closed before is disconnected, the relay which is not closed before is closed in the other half of the relay, the collected data is uploaded to the system host 1, the system host 1 calculates and compares the parameters with the stored parameters, and so on, detects the corresponding relation of each point in the cable 5 to be detected by using the dichotomy, and then the man-machine interaction module 12 displays the name of the cable 5 to be tested and stores the name.
The emphasis of each embodiment in the present specification is on the difference from the other embodiments, and the same and similar parts among the various embodiments may be referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (7)
1. The complete machine cable detection system is characterized by comprising a system host and a system slave; the system host and the system slave are connected in cascade; the system slave machines are distributed on the tested machine; the number of the system slave machines is configured according to the number of the cables to be tested;
the cables to be tested are connected to the system slave machines according to the principle of proximity; each cable to be tested is connected with the system slave through a switching cable; the switching cable is connected with a plurality of cables to be tested; the patch cable includes an address module; the system slave machine reads the address of the cable to be tested through the switching cable and transmits the address to the system host machine; the system host calls parameter information corresponding to the cable to be tested according to the address and generates a test command according to the parameter information; the parameter information comprises the name, specification model and corresponding relation of the cable to be tested; the corresponding relation is the corresponding relation between each wire core of the cable to be tested and each test point in the test interface;
the system host is used for transmitting a test command and an excitation source to the system slave; the system slave is used for automatically detecting the cable to be detected according to the test command and the excitation source to obtain detection data and transmitting the detection data to the system host; the system host is also used for obtaining a detection result according to the detection data and the data of the excitation source; the system slave comprises a slave mainboard; the slave main board is used for controlling a relay in a corresponding matrix board card to work according to the test command, connecting the excitation source to a wire core of the cable to be tested, and collecting detection data of the wire core;
the system host comprises a test mainboard; the test mainboard comprises a main control unit, an FPGA module, an excitation source module and a relay channel switching module; the main control unit is respectively in communication connection with the FPGA module and the relay channel switching module; the FPGA module is also connected with the excitation source module;
the excitation source module comprises a plurality of types of excitation source function cards; each excitation source function card is arranged in a function card slot and corresponds to a function card address;
the relay channel switching module is connected with the card slot relays of all the functional card slots;
the FPGA module obtains the type of the excitation source function card in each function card slot by reading the function card address and transmits the type to the main control unit;
the main control unit is used for determining a to-be-driven excitation source function card according to the current detection function, controlling the FPGA module to drive and open the to-be-driven excitation source function card, controlling the relay channel switching module to open a card slot relay corresponding to the to-be-driven excitation source function card, and outputting an excitation source.
2. The detection system according to claim 1, wherein the system master is connected with the system slaves by a cascade cable;
the cascade cable comprises an excitation source cable and a communication cable; the excitation source cable and the communication cable are isolated by a simulated ground wire wrapping isolation mode; the excitation source cable is used for transmitting an excitation source to the system slave; the communication cable is used for realizing communication between the system master and the system slave.
3. The detection system of claim 1, wherein the system host further comprises a human-computer interaction module; the human-computer interaction module is in communication connection with the test mainboard; and the test mainboard acquires the current detection function through the man-machine interaction module.
4. The detection system of claim 1, wherein the system slave further comprises a matrix unit module and a test interface module; the matrix unit module comprises a plurality of matrix board cards; the test interface module comprises a plurality of test interfaces; the matrix board cards are connected with the test interfaces in a one-to-one corresponding mode, and the test interfaces are connected with the cables to be tested in a one-to-one corresponding mode;
the slave main board is in communication connection with the matrix unit module; the slave mainboard is used for receiving a test command sent by the system host, controlling the corresponding matrix board card to work according to the test command, connecting the excitation source to the cable to be tested and collecting the detection data of the cable to be tested.
5. The detection system of claim 4, wherein the system slave further comprises a slave backplane; and the slave main board is in communication connection with the system host and the matrix unit module through the slave back board.
6. The detection system of claim 4, wherein the matrix board comprises a relay matrix comprised of a plurality of relays; one end of each relay is connected with one test point in the test interface corresponding to the matrix board card, and the other end of each relay is respectively connected with an excitation source anode, an excitation source cathode, an acquisition anode and an acquisition cathode; each test point corresponds to one wire core of the cable to be tested.
7. A complete machine cable inspection method, operating with the inspection system of any one of claims 1-6, the inspection method comprising:
acquiring a current detection function and parameter information of a cable to be detected which needs to be detected; the parameter information of the cable to be detected is obtained by calling the address of the cable to be detected, which is read by the system slave through the switching cable, according to the received parameter information; the parameter information comprises the name, specification model and corresponding relation of the cable to be tested; the corresponding relation is the corresponding relation between each wire core of the cable to be tested and each test point in the test interface;
outputting a corresponding excitation source to a system slave according to the detection function, and outputting a corresponding test command to the system slave according to the parameter information; determining an excitation source function card to be driven according to the current detection function, controlling the FPGA module to drive and open the excitation source function card to be driven, controlling the relay channel switching module to open a card slot relay corresponding to the excitation source function card to be driven, and outputting an excitation source;
acquiring detection data acquired by the system slave under the test command when the excitation source is connected with the cable to be tested; the slave main board of the system slave is used for controlling a relay in a corresponding matrix board card to work according to the test command, connecting the excitation source to a wire core of the cable to be tested and acquiring the detection data of the wire core;
and obtaining a detection result according to the detection data and the data of the excitation source.
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| CN113933754A (en) * | 2021-10-20 | 2022-01-14 | 上海赞太科技有限公司 | Wire harness testing method and device based on EtherCAT bus |
| CN115815474B (en) * | 2022-12-01 | 2023-09-15 | 广东新亚光电缆股份有限公司 | Low-voltage wire and intelligent processing system thereof |
| CN117110760A (en) * | 2023-09-14 | 2023-11-24 | 成都飞机工业（集团）有限责任公司 | Aviation harness distributed detection method |
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| JPH0886822A (en) * | 1994-09-14 | 1996-04-02 | Sumitomo Wiring Syst Ltd | Wire harness inspection instrument |
| CN102097717B (en) * | 2009-12-11 | 2014-04-30 | 上海卫星工程研究所 | Automatic detection switchover system for cable |
| CN103560810B (en) * | 2013-11-15 | 2016-04-06 | 哈尔滨工业大学 | Based on the wireline test controller of CAN communication |
| CN104297623B (en) * | 2014-10-31 | 2017-04-12 | 中国商用飞机有限责任公司 | Automatic test system for onboard cable integrity |
| CN104297606A (en) * | 2014-10-31 | 2015-01-21 | 上海飞机制造有限公司 | Adapter cable testing system capable of recognizing addresses of tested devices |
| CN105425097A (en) * | 2015-12-16 | 2016-03-23 | 天津华宁电子有限公司 | Mining communication cable tester |
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