CN113985319A - Automatic change interface test equipment - Google Patents
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- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/68—Testing of releasable connections, e.g. of terminals mounted on a printed circuit board
Abstract
The application relates to an automated interface test equipment, it is set up in whole star interface automated test system, includes: the functional modules are provided with circuit boards for completing corresponding functions, wherein each functional module provides a certain number of parallel input/output interfaces for an interface configuration part to complete a function multiplexing function; and the control communication part is configured to send the acquired data to the upper computer through the network port according to a certain format, complete interface configuration and each functional module configuration according to user parameters of the upper computer, package the acquired data into frames and send the frames to the upper computer.
Description
Technical Field
The application relates to an automatic interface test device designed for testing a satellite interface, which is used for a high-integration whole satellite interface test system with strong universality, high automation degree, strong expansibility, high safety and high reliability.
Background
Once the satellite is launched, the change and maintenance are difficult to carry out, so that the interface of the satellite is tested in the development process to test the correctness, the reasonability and the matching of the overall electrical design of the satellite and test the electrical performance and the parameter indexes of each subsystem; checking the matching and the correctness of the interface relation among the subsystems; it is very necessary to check the reliability and accuracy of information channel delivery and instructions. The completeness of the test directly determines the success or failure of the whole satellite task. Therefore, it is imperative to design a whole satellite interface test system with high test efficiency, automation degree, reliability and safety, strong expansibility and high operability.
The solution methods mainly comprise the following types:
1) the traditional test scheme is as follows: the three-way connection of the cables to be tested on the satellite is realized by manual operation of personnel, and then the signal points are measured by using self-made contact pins or jacks and displayed by a universal meter or an oscilloscope. And recording modes such as manual recording, oscilloscope screenshot and the like are adopted, and then test data are recorded into equipment such as a computer and compared by excel and the like.
2) Automatic test system of satellite interface.
A. The system mainly comprises a contact switching device, an oscilloscope, a switching cable and system control software. Various patch cables inherit existing cables. The contact switching device realizes the functions of contact switching, system external interface and computer communication. The contact switching device provides an external measurement interface, and is convenient for peripheral measurement equipment such as an oscilloscope and the like to measure. The contact switching device and the control computer are communicated through the Ethernet, and the remote control and the signal acquisition of the interface switching device by the computer are realized.
B. The system design comprises 5 modules such as a bus monitoring module, a PCM monitoring module, a counter module, a data acquisition module, a signal generator module and the like, and the monitoring, the acquisition and the output of excitation signals of various and multi-channel signals are completed. The bus monitoring module realizes communication monitoring of the CAN bus and the RS-422 bus; the PCM monitoring module realizes communication monitoring and error detection on the PCM signal; the counter module realizes the periodic measurement of periodic signals, the time difference measurement between every two periodic signals and the measurement of switching value signals; the data acquisition module acquires voltage signals; the signal generator module realizes the output of the excitation signal.
C. The system consists of five parts, namely a wired ground inspection controller, a wireless front end, CORTEX, ground comprehensive test software and an operating platform. The system mainly completes the following functions: sending remote control commands, program control commands and data injection information in a wireless mode and a wired mode; receiving engineering parameters and data from the satellite, processing various parameters and data, displaying, archiving and the like.
At present, most satellites adopt a traditional manual operation mode by personnel, and the scheme has potential safety hazards due to manual operation of the personnel; because various signal types and data volumes of the satellite system are large, the method has long testing time and low manual operation efficiency; the scheme mainly adopts recording modes such as manual recording, oscilloscope screenshot and the like, and is not convenient for storing test data and comparing longitudinal data with transverse data.
The three types of automatic test systems have the following defects:
in the scheme A, peripheral measuring equipment such as an oscilloscope and the like are still required for measurement, and the automation degree is not high; the connection interface of the system and the whole satellite cable network is an electric connector, the electric connector is in the types of CD1-51ZJ and CD1-37ZJ, and the expandability is poor; the multiplexing of interface functions is not realized, functional modules cannot be flexibly configured, and the expansion of the test quantity and types is realized.
The scheme B is designed aiming at the test requirements of a certain type of small satellite, the voltage measurement and current measurement, the periodic signal strategy, the switching value measurement, the RS422 bus and the CAN bus, the output of OC/DO/AO/PWM signals and the like are fewer, the test requirements of more measurement paths, 1553B bus measurement, temperature measurement signal output, bus data transmission and the like cannot be met, and the universality is poor.
The scheme C mainly verifies whether the satellite electrical performance and functions are complete or not, whether the interfaces are matched or not and the compatibility and reliability of software and hardware of the system, but the design mainly completes the software design part of the test system, and the requirements of automatic test of the interfaces cannot be met in the aspects of hardware such as various waveform tests output by the interface nodes, voltage or current measurement, TTL/OC signal output and the like.
Therefore, a highly integrated whole satellite interface automatic test system with strong universality, high automation degree, strong expansibility, high safety and high reliability is urgently needed in the field.
Disclosure of Invention
The application aims to provide automatic interface testing equipment to realize a high-integration whole satellite interface automatic testing system with strong universality, high automation degree, strong expansibility, high safety and high reliability.
In order to achieve the above object, the present application provides the following technical solutions.
The application provides an automatic interface test equipment, it is set up in whole star interface automated testing system, includes:
the functional modules are provided with circuit boards for completing corresponding functions, wherein each functional module provides a certain number of parallel input/output interfaces for an interface configuration part to complete a function multiplexing function; and
and the control communication part is configured to send the acquired data to the upper computer through the network port according to a certain format, complete interface configuration and each functional module configuration according to user parameters of the upper computer, package the acquired data into frames and send the frames to the upper computer.
Optionally, in the automatic interface testing device, the whole-satellite interface automatic testing system further includes:
the transfer cable is configured to be matched with an interface configuration part of upper computer software, so that the function of complete soft configuration is realized, the function multiplexing is realized, the flexibility of the interface is expanded, and the number of the transfer cables is reduced;
and the industrial personal computer is configured to run the upper computer software.
Optionally, in the automatic interface testing device, a control part of the automatic interface testing device takes an FPGA as a core, monitors a channel state in real time, processes a low-speed signal, realizes framing of collected data and issuing of an instruction, and realizes real-time communication with an upper computer in an industrial personal computer through a network port;
the automatic interface test equipment adopts a transverse slot case architecture design and adopts a front panel and back panel double-sided design;
the front panel is used for external interfaces, system control, system power supply processing and other parts requiring larger space, wherein the front panel comprises an interface input and GND switch board card, an interface multiplexing board card, an interface switch matrix board card, a system control board card, a system power supply board card and a standby board card, a simulation and temperature measurement input/output board, an OC door input/output board card, an interface configuration board card, an RS422 receiving and transmitting board card, a heater propulsion output board card, a network port and a standby board card, and all the board cards of the front panel are inserted into the slots of the transverse case to realize the connection with the back panel;
signals collected by the automatic interface test equipment through the adapter cable or output signals are transmitted through the backboard;
the signal transmission among the modules is realized by connecting the modules together in a backboard mode.
Optionally, in the automatic interface testing device, internal modules of the industrial personal computer and the automatic interface testing device are connected together in a backplane manner, and the industrial personal computer and the automatic interface testing device realize signal transmission through an ethernet;
the industrial personal computer adopts a PXI Express case with the system bandwidth as high as 1GB/s, an NI controller is selected on the basis, and the industrial personal computer is provided with a digital multimeter board card, an LVDS high-speed communication board card, a 1553B board card, a CAN bus board card, a standby board card, a USB interface, a VGA interface and a network port, wherein each board card is connected to a backboard of each slot of the case, the slots support modules compatible with a PXI mixed bus, and signal transmission among the modules of the industrial personal computer is realized through the backboard.
Optionally, in the automatic interface testing device, a control system part of the industrial personal computer runs a Windows operating system, and based on a LabVIEW development environment, a system-friendly operating interface is provided, on one hand, a sending instruction is configured and sent to the automatic interface testing device according to user input, on the other hand, data sent by the automatic testing device is displayed in real time, and meanwhile, a high-speed interface board card, a bus board card and a digital multimeter board card are displayed and controlled for users to use;
the high-speed interface board card provides an LVDS interface with the maximum rate of more than 100Mbps, and the number of input/output channels is more than 6;
the bus board cards comprise a CAN bus board card and a 1553B bus board card, and are configured by a user through an upper computer to simulate each terminal;
the digital multimeter board card provides fast and accurate voltage measurement, current measurement, resistance measurement, frequency/period measurement and diode measurement.
Optionally, in the automatic interface test device, the standby board card is used for expanding the number of all input and output signals without changing the overall design of the test system, is used for expanding different types of buses such as IIC and 485 buses, and is used for expanding the input and output signal quantity of a power distribution equivalent device and a magnetic torquer equivalent device, so as to meet the improvement of the satellite test requirement in the future;
the interface modules of the switching cables and the automatic interface test equipment are matched with an interface configuration part of upper computer software, so that the function of complete soft configuration of low-speed and low-current signals is realized, the flexibility of the interfaces is expanded, and the number of the switching cables is reduced.
Optionally, in the automation interface test device, the patch cable includes a general patch cable, a dedicated patch cable, and an independent board cable;
one end of the independent board card cable is connected with external interfaces of special board cards such as the industrial personal computer LVDS interface board card, the CAN bus board card, the 1553B bus board card and the digital multimeter through an electric connector, and the other end of the independent board card cable is connected with a bus or a signal electric connector of the tested single machine through the electric connector, so that interface verification of a special module is realized;
one end of the switching cable is connected with an external interface of a front panel board card of the automatic interface test equipment through an electric connector, one end of the switching cable is connected with a tested single-machine interface through the electric connector and is used for signal acquisition and input and output, one end of the independent board cable is connected with external interfaces of special board cards such as an industrial personal computer LVDS interface board card, a CAN bus board card, a 1553B bus board card and a digital multimeter through the electric connector, the other end of the independent board cable is connected with a bus or a signal electric connector of the tested single-machine through the electric connector, and interface verification of a special module is achieved.
Optionally, in the automatic interface testing device, one end of the universal patch cable is a 100-core plug accessed by the testing system, the other end of the universal patch cable is one or more whole star connectors to be tested, subsequent expansion is to customize a universal patch cable according to different types of connectors, and an upper computer performs definition of software configuration of each interface;
the special adapter cable mainly comprises a heater module adapter cable, a propulsion module adapter cable and other signal cables with larger current;
the independent board card cable refers to cables of an LVDS interface board card, a CAN bus board card, a 1553B bus board card, a digital multimeter and the like, and is used for corresponding high-speed LVDS interfaces, bus interfaces and digital multimeters.
Optionally, in the automatic interface testing device, the automatic interface testing device mainly includes an interface configuration part, a control communication part, and each functional module part;
the interface configuration part is composed of four sub-modules: the system comprises a GND switch module, an interface input and multiplexing module, an interface switch matrix module and a function multiplexing module; the GND switch module provides a low-conduction-resistance connecting channel between other single machines and the equipment to realize equal reference potential; the interface input and multiplexing module prevents signals from exceeding a normal range and performing electrostatic protection on the one hand, and provides a fault positioning function; on the other hand, different connectors are selected for testing according to the setting of a user; the interface switch matrix module selects a part of signals from 100 signals of the connector to be tested for testing and observation according to user setting; the function multiplexing module carries out function check on the selected signals respectively, and each path of signals is selected from one of the provided function circuits at will;
the control communication part is used for sending the acquired data to the upper computer through the network port according to a certain format, finishing interface configuration and functional module configuration according to user parameters of the upper computer, and packaging the acquired data into frames and sending the frames to the upper computer;
each functional module part is configured to complete the circuit board card with corresponding functions, and each functional module provides a certain number of parallel input/output interfaces for the interface configuration part to complete the function multiplexing function; the automatic interface test equipment comprises analog input/output, temperature measurement input/output, OC door input/output and RS422 type signals, and provides about three standby card slots for subsequent function expansion.
In the automatic interface test equipment provided by the invention, the automatic interface test equipment is arranged in the whole-satellite interface automatic test system, and a plurality of functional modules are provided with circuit boards for completing corresponding functions, wherein each functional module provides a certain number of parallel input/output interfaces for an interface configuration part to complete a function multiplexing function; and the control communication part sends the acquired data to the upper computer through the network port according to a certain format, completes interface configuration and configuration of each functional module according to user parameters of the upper computer, packages the acquired data into frames and sends the frames to the upper computer, CAN realize that the interface configuration part completes a function multiplexing function, such as a CAN/LVDS/1553B/RS422/SPI bus function, CAN also realize automatic testing, and avoids the adoption of a manual operation mode in the traditional testing method.
Furthermore, the transfer cable is matched with an interface configuration part of the upper computer software, so that the function of complete soft configuration is realized, the function multiplexing is realized, the flexibility of the interface is expanded, the number of the transfer cable is reduced, the industrial personal computer runs the upper computer software, the CAN/LVDS/1553B/RS422/SPI bus function is realized, and a transmitting/receiving end and the like CAN be simulated; the adapter cable is matched with an interface configuration part of upper computer software, so that the function of complete soft configuration is realized, the function multiplexing is realized, the flexibility of the interface is greatly expanded, and the number of the adapter cables is reduced.
The solution of the present application solves the following problems of the prior art:
1) the problems that a traditional testing method adopts a manual operation mode, potential safety hazards exist, testing time is long, testing efficiency is low, storage of testing data is not convenient, and longitudinal and transverse data comparison is achieved are solved.
2) The multiplexing function of the interface is added, the expansion of the types and the quantity of the interface requirements is more flexible, the type of the interface cable is designed to be changed according to the type configuration of the actual electric connector of the satellite, and the universality and the expandability are strong.
3) Aiming at the problems of relatively small measurement path number and the like and poor universality of the original automatic test system, the design is increased on the basis of counting the requirements of a plurality of satellite model interfaces, 32 paths of LVDS serial port input/output are newly added, 2 paths of 1553B bus interfaces are newly added, the measurement precision of the adopted digital multimeter board card is higher, the measurement range is larger, the adaptability is better, in addition, the types and the number of output signals are also increased, the sending function of a satellite common bus is realized, and the universality is stronger.
Compared with the prior art, the automatic testing system for the whole satellite interface has the advantages of being strong in universality, high in automation degree, strong in expansibility, and high in safety and reliability. The CAN/LVDS/1553B/RS422/SPI bus function CAN be realized, and a transmitting/receiving end and the like CAN be simulated; the adapter cable is matched with an interface configuration part of upper computer software, so that the function of complete soft configuration is realized, the function multiplexing is realized, the flexibility of the interface is greatly expanded, and the number of the adapter cables is reduced.
Drawings
FIG. 1 is a schematic diagram of an automated testing system for a whole satellite interface according to the present application.
FIG. 2 is a schematic diagram of the overall architecture of the entire star desktop automation interface test system of the present application.
FIG. 3 is a flow chart of the present application for testing system information for a whole star desktop interface.
FIG. 4 is a schematic diagram of the connector interface definition soft configuration of the present application.
Detailed Description
The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings and the embodiments of the present application.
The automatic test system of whole star desktop interface of this application is a set of real-time display and control test system, mainly comprises switching cable, automatic interface test equipment and industrial computer triplex, as shown in figure 1. The control part of the automatic interface test equipment takes the FPGA as a core, monitors the channel state in real time, processes low-speed signals, realizes operations such as framing of collected data, issuing of instructions and the like, and realizes real-time communication with an upper computer in an industrial personal computer through a network port; the automatic interface test equipment adopts a transverse slot case architecture design and adopts a front panel and back panel double-sided design; the front panel is used for external interfaces, system control, system power supply processing and other parts requiring larger space, wherein the front panel comprises an interface input and GND switch board card, an interface multiplexing board card, an interface switch matrix board card, a system control board card, a system power supply board card and a standby board card, a simulation and temperature measurement input/output board, an OC door input/output board card, an interface configuration board card, an RS422 receiving and transmitting board card, a heater propulsion output board card, a network interface and a standby board card; it can also be seen from fig. 1 and 2 that the signal transmission between the modules is realized by connecting the modules together in the form of a backplane. The industrial personal computer mainly adopts a PXI Express case PXIe-1078 with a system bandwidth of National Instrument company as high as 1GB/s, selects a stable and reliable NI controller on the basis, is provided with a digital multimeter board card of the National Instrument company, an LVDS high-speed communication board card of the National Instrument company, a 1553B board card of the Avionics Interface Technologies company, a CAN bus board card of Guangzhou remote electronics, a standby board card, a USB Interface, a VGA Interface, a network Interface and the like, is connected to a back plate of each NI slot of the PXIe-1078, supports a module compatible with a PXI mixed bus, and realizes signal transmission among industrial personal computer modules through the back plate. To sum up, the internal modules of the industrial personal computer and the automatic interface test equipment of the test system are connected together in a mode of a back plate, the industrial personal computer and the automatic interface test equipment realize signal transmission through the Ethernet, one end of a transfer cable is connected with an external interface of a front panel board card of the automatic interface test equipment through an electric connector, one end of the transfer cable is connected with a tested single machine interface through the electric connector, signal acquisition and input and output are carried out, an independent board cable is connected with the external interfaces of special boards such as the industrial personal computer LVDS interface board card, the CAN bus board card, the 1553B bus board card and the digital multimeter through the electric connector, the other end of the independent board cable is connected with a bus or a signal electric connector of the tested single machine through the electric connector, and interface verification of the special modules is realized.
The spare board card can expand the number of all input and output signals mentioned in the table 1 under the condition that the overall design of the test system is not changed, can be used for expanding different bus types such as IIC and 485 buses, and can also be used for expanding the input and output signal quantity which is not mentioned in the table 1 such as a power distribution equivalent device and a magnetic moment device equivalent device, so that the improvement of the future satellite test requirements is met.
The interface modules of the switching cables and the automatic interface test equipment are matched with an interface configuration part of upper computer software (running in an industrial personal computer), so that the function of complete soft configuration of low-speed and low-current signals is realized, the flexibility of the interfaces is greatly expanded, and the number of the switching cables is reduced.
The adapter cable is mainly divided into a general adapter cable, a special adapter cable and an independent board card cable.
One end of the universal adapter cable is a 100-core plug accessed by the test system, the other end of the universal adapter cable is one or more whole star connectors to be tested, subsequent expansion only needs to customize the universal adapter cable according to different types of connectors, and the upper computer carries out definition of software configuration of each interface.
The special patch cable mainly comprises a signal cable with larger current, such as a heater module patch cable, a propulsion module patch cable and the like.
The independent board card cable refers to cables of an LVDS interface board card, a CAN bus board card, a 1553B bus board card, a digital multimeter and the like, and is used for corresponding high-speed LVDS interfaces, bus interfaces, digital multimeters and the like.
The automatic interface test equipment mainly comprises an interface configuration part, a control communication part and various functional module parts.
The interface configuration part is composed of four sub-modules: the device comprises a GND switch module, an interface input and multiplexing module, an interface switch matrix module and a function multiplexing module. The GND switch module provides a low-conduction-resistance connecting channel between other single machines and the equipment, and realizes equal reference potential. The interface input and multiplexing module prevents signals from exceeding a normal range and performing electrostatic protection on the one hand, and provides a fault positioning function; and on the other hand, different connectors are selected for testing according to the setting of the user. The interface switch matrix module selects a part of signals (such as 16 paths) from 100 signals of the connector to be tested according to the user setting for testing and observation. The function multiplexing module carries out function check on the selected signals respectively, and each path of signals can be selected from the provided functional circuits at will.
The control communication part not only sends the collected data to the upper computer through the network interface according to a certain format, but also completes interface configuration, configuration of each functional module and the like according to user parameters of the upper computer, and simultaneously packages the collected data into frames and sends the frames to the upper computer.
Each functional module part is mainly a circuit board card for completing corresponding functions, and each functional module provides a certain number (such as 16 paths) of parallel input/output interfaces for the interface configuration part to complete the function multiplexing function. The automatic interface test equipment provides three or more standby card slots for subsequent function expansion.
The industrial personal computer mainly comprises a control system part, a high-speed interface board card, a bus board card and a digital multimeter board card.
The control system part runs a Windows operating system, is based on a LabVIEW development environment and is a system-friendly operating interface, on one hand, the command is sent to the automatic interface test equipment according to the input configuration of a user, and on the other hand, the data sent by the automatic test equipment is displayed in real time. And meanwhile, the high-speed interface board card, the bus board card and the digital multimeter board card are displayed and controlled for users to use.
The high-speed interface board card provides an LVDS interface with the maximum rate of more than 100Mbps, and the number of input/output channels is more than 6.
The bus board cards comprise a CAN bus board card and a 1553B bus board card, and are configured by a user through an upper computer to simulate each terminal.
The digital multimeter board card provides rapid and accurate voltage measurement, current measurement, resistance measurement, frequency/period measurement, diode measurement and the like.
TABLE 1 interface statistical table of automatic testing system for whole satellite interface
The innovation point and the quasi-protection point of the technical scheme are that the CAN/LVDS/1553B/RS422/SPI bus function is realized, and a transmitting/receiving end and the like CAN be simulated; the adapter cable is matched with an interface configuration part of upper computer software, so that the function of complete soft configuration is realized, the function multiplexing is realized, the flexibility of the interface is greatly expanded, and the number of the adapter cables is reduced.
The solution of the present application solves the following problems of the prior art:
1) the problems that a traditional testing method adopts a manual operation mode, potential safety hazards exist, testing time is long, testing efficiency is low, storage of testing data is not convenient, and longitudinal and transverse data comparison is achieved are solved.
2) The multiplexing function of the interface is added, the expansion of the types and the quantity of the interface requirements is more flexible, the type of the interface cable is designed to be changed according to the type configuration of the actual electric connector of the satellite, and the universality and the expandability are strong.
3) Aiming at the problems of relatively small measurement path number and the like and poor universality of the original automatic test system, the design is increased on the basis of counting the requirements of a plurality of satellite model interfaces, 32 paths of LVDS serial port input/output are newly added, 2 paths of 1553B bus interfaces are newly added, the measurement precision of the adopted digital multimeter board card is higher, the measurement range is larger, the adaptability is better, in addition, the types and the number of output signals are also increased, the sending function of a satellite common bus is realized, and the universality is stronger.
The embodiments described above are intended to facilitate the understanding and appreciation of the application by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present application is not limited to the embodiments herein, and those skilled in the art who have the benefit of this disclosure will appreciate that many modifications and variations are possible within the scope of the present application without departing from the scope and spirit of the present application.
Claims (9)
1. An automated interface testing apparatus, disposed in a whole star interface automated testing system, comprising:
the functional modules are provided with circuit boards for completing corresponding functions, wherein each functional module provides a certain number of parallel input/output interfaces for an interface configuration part to complete a function multiplexing function; and
and the control communication part is configured to send the acquired data to the upper computer through the network port according to a certain format, complete interface configuration and each functional module configuration according to user parameters of the upper computer, package the acquired data into frames and send the frames to the upper computer.
2. The automated interface testing apparatus of claim 1, wherein the whole star interface automated testing system further comprises:
the transfer cable is configured to be matched with an interface configuration part of upper computer software, so that the function of complete soft configuration is realized, the function multiplexing is realized, the flexibility of the interface is expanded, and the number of the transfer cables is reduced;
and the industrial personal computer is configured to run the upper computer software.
3. The automatic interface test device of claim 2, wherein the control part of the automatic interface test device takes the FPGA as a core, monitors the channel state in real time, processes the low-speed signal, realizes framing of the acquired data and issuing of the instruction, and realizes real-time communication with an upper computer in the industrial personal computer through the network port;
the automatic interface test equipment adopts a transverse slot case architecture design and adopts a front panel and back panel double-sided design;
the front panel is used for external interfaces, system control, system power supply processing and other parts requiring larger space, wherein the front panel comprises an interface input and GND switch board card, an interface multiplexing board card, an interface switch matrix board card, a system control board card, a system power supply board card and a standby board card, a simulation and temperature measurement input/output board, an OC door input/output board card, an interface configuration board card, an RS422 receiving and transmitting board card, a heater propulsion output board card, a network port and a standby board card, and all the board cards of the front panel are inserted into the slots of the transverse case to realize the connection with the back panel;
signals collected by the automatic interface test equipment through the adapter cable or output signals are transmitted through the backboard;
the signal transmission among the modules is realized by connecting the modules together in a backboard mode.
4. The automated interface testing apparatus of claim 3,
the industrial personal computer and the automatic interface testing equipment are connected together in a mode of a back plate, and the industrial personal computer and the automatic interface testing equipment realize signal transmission through the Ethernet;
the industrial personal computer adopts a PXI Express case with the system bandwidth as high as 1GB/s, an NI controller is selected on the basis, and the industrial personal computer is provided with a digital multimeter board card, an LVDS high-speed communication board card, a 1553B board card, a CAN bus board card, a standby board card, a USB interface, a VGA interface and a network port, wherein each board card is connected to a backboard of each slot of the case, the slots support modules compatible with a PXI mixed bus, and signal transmission among the modules of the industrial personal computer is realized through the backboard.
5. The automatic interface test equipment of claim 4, wherein the control system part of the industrial personal computer runs a Windows operating system, and based on a LabVIEW development environment, a system-friendly operating interface is used for transmitting an instruction to the automatic interface test equipment according to user input configuration on one hand, and displaying data transmitted by the automatic test equipment in real time on the other hand, and simultaneously displaying and controlling the high-speed interface board card, the bus board card and the digital multimeter board card for users to use;
the high-speed interface board card provides an LVDS interface with the maximum rate of more than 100Mbps, and the number of input/output channels is more than 6;
the bus board cards comprise a CAN bus board card and a 1553B bus board card, and are configured by a user through an upper computer to simulate each terminal;
the digital multimeter board card provides fast and accurate voltage measurement, current measurement, resistance measurement, frequency/period measurement and diode measurement.
6. The automatic interface test equipment of claim 5, wherein the spare board card realizes the expansion of the number of all input and output signals under the condition of not changing the overall design of the test system, is used for the expansion of different bus types such as IIC, 485 bus and the like, and is used for realizing the expansion of the input and output signal quantity of a power distribution equivalent device and a magnetic torquer equivalent device, thereby meeting the improvement of the future satellite test requirement;
the interface modules of the switching cables and the automatic interface test equipment are matched with an interface configuration part of upper computer software, so that the function of complete soft configuration of low-speed and low-current signals is realized, the flexibility of the interfaces is expanded, and the number of the switching cables is reduced.
7. The automated interface testing apparatus of claim 6, wherein the patch cable comprises a universal patch cable, a dedicated patch cable, and a stand-alone card cable;
one end of the independent board card cable is connected with external interfaces of special board cards such as the industrial personal computer LVDS interface board card, the CAN bus board card, the 1553B bus board card and the digital multimeter through an electric connector, and the other end of the independent board card cable is connected with a bus or a signal electric connector of the tested single machine through the electric connector, so that interface verification of a special module is realized;
one end of the switching cable is connected with an external interface of a front panel board card of the automatic interface test equipment through an electric connector, one end of the switching cable is connected with a tested single-machine interface through the electric connector and is used for signal acquisition and input and output, one end of the independent board cable is connected with external interfaces of special board cards such as an industrial personal computer LVDS interface board card, a CAN bus board card, a 1553B bus board card and a digital multimeter through the electric connector, the other end of the independent board cable is connected with a bus or a signal electric connector of the tested single-machine through the electric connector, and interface verification of a special module is achieved.
8. The automated interface testing apparatus of claim 7,
one end of the universal adapter cable is a 100-core plug accessed by the test system, the other end of the universal adapter cable is one or more whole star connectors to be tested, the universal adapter cable is customized according to different types of connectors for subsequent expansion, and the upper computer carries out definition of each interface of software configuration;
the special adapter cable mainly comprises a heater module adapter cable, a propulsion module adapter cable and other signal cables with larger current;
the independent board card cable refers to cables of an LVDS interface board card, a CAN bus board card, a 1553B bus board card, a digital multimeter and the like, and is used for corresponding high-speed LVDS interfaces, bus interfaces and digital multimeters.
9. The automation interface testing device of claim 8 wherein the automation interface testing device is comprised primarily of an interface configuration section, a control communication section, and various functional module sections;
the interface configuration part is composed of four sub-modules: the system comprises a GND switch module, an interface input and multiplexing module, an interface switch matrix module and a function multiplexing module; the GND switch module provides a low-conduction-resistance connecting channel between other single machines and the equipment to realize equal reference potential; the interface input and multiplexing module prevents signals from exceeding a normal range and performing electrostatic protection on the one hand, and provides a fault positioning function; on the other hand, different connectors are selected for testing according to the setting of a user; the interface switch matrix module selects a part of signals from 100 signals of the connector to be tested for testing and observation according to user setting; the function multiplexing module carries out function check on the selected signals respectively, and each path of signals is selected from one of the provided function circuits at will;
the control communication part is used for sending the acquired data to the upper computer through the network port according to a certain format, finishing interface configuration and functional module configuration according to user parameters of the upper computer, and packaging the acquired data into frames and sending the frames to the upper computer;
each functional module part is configured to complete the circuit board card with corresponding functions, and each functional module provides a certain number of parallel input/output interfaces for the interface configuration part to complete the function multiplexing function; the automatic interface test equipment comprises analog input/output, temperature measurement input/output, OC door input/output and RS422 type signals, and provides about three standby card slots for subsequent function expansion.
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| CN201811029102.0A CN109143033B (en) | 2018-09-05 | 2018-09-05 | Automatic testing system for whole satellite interface |
| CN202111004571.9A CN113985319A (en) | 2018-09-05 | 2018-09-05 | Automatic change interface test equipment |
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| CN109143033A (en) | 2019-01-04 |
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