CN116859894A - Automatic test method for helicopter internal electronic regulator based on multi-agent technology - Google Patents
Automatic test method for helicopter internal electronic regulator based on multi-agent technology Download PDFInfo
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The application discloses an automatic test method of an internal electronic regulator of a helicopter based on a multi-agent technology, which relates to the technical field of automatic test, and can realize the automatic test method based on the multi-agent technology by combining a built automatic test platform with a designed test strategy.
Description
Technical Field
The application relates to the technical field of automatic testing, in particular to an automatic testing method of an electronic regulator in a helicopter based on a multi-agent technology.
Background
In recent years, the rapidly developed microelectronic technology provides a powerful technical support for the national defense industry in China, so that novel military equipment including novel helicopters and other heavy-duty national defense equipment is also rapidly developed. Along with the rapid development of the types and the number of the helicopters in China, the maintenance number of the helicopters is increased to improve the flight safety of the helicopters. Electronic regulators are an important component of helicopter engine control systems, the electronic regulators internally comprise various analog circuit boards and digital circuit boards, the completeness of the functions of the various circuit boards in the electronic regulators is critical to the flight safety of a helicopter, and therefore testing of the various circuit boards in the electronic regulators is one of important tasks.
In order to ensure the stable and reliable functions of various circuit boards in the electronic regulator, the performance of the electronic regulator is tested and maintained from the whole function angle at present. Once the function abnormality occurs, only manual test by using an instrument can be tried to remove faults, and the defects of high misjudgment rate, low efficiency and the like exist.
Disclosure of Invention
Aiming at the problems and the technical requirements, the inventor provides an automatic test method of an internal electronic regulator of a helicopter based on a multi-agent technology, and the technical scheme of the application is as follows:
An automatic test method of an electronic regulator inside a helicopter based on a multi-agent technology, the automatic test method comprising:
an automatic test platform based on a multi-agent technology is built, the automatic test platform comprises an industrial personal computer, a bus resource board, a matrix switch board, a power supply, a signal generator, a parameter measurement unit and a test bottom board, the matrix switch board comprises a plurality of relays, each relay is connected through a pre-wiring circuit in the matrix switch board to form a matrix switch array with the specification of M x N, the matrix switch array provides M x N channel connectors outwards, the industrial personal computer is connected through the bus resource board and controls each relay in the matrix switch board, and the power supply, the signal generator and the parameter measurement unit are respectively connected with different channel connectors of the matrix switch board; the industrial personal computer is connected with and controls the power supply, the signal generator and the parameter measuring unit; each port pin in the test port of the test base plate is respectively abutted against each channel connector of the matrix switch board, a connector is arranged on the test base plate, the connector comprises a plurality of contact pins, and each contact pin of the connector is respectively connected with each port pin in the test port of the test base plate through a wiring structure in the test base plate; m and N are integer parameters;
Inserting each contact pin of the connector of the circuit board to be tested in the electronic regulator to be tested and each contact pin of the connector of the test bottom plate correspondingly;
the method comprises the steps that an industrial personal computer determines pins corresponding to a power supply port, a signal input port and a signal output port of a circuit board to be tested, controls the on-off state of each relay through a bus resource board, forms a conducting loop from a channel connection port connected with a power supply to a channel connection port connected with pins of the power supply port of the circuit board to be tested by utilizing a matrix switch array, forms a conducting loop from a channel connection port connected with a signal generator to a channel connection port connected with pins of the signal input port of the circuit board to be tested, and forms a conducting loop from a channel connection port connected with a parameter measurement unit to a channel connection port connected with pins of the signal output port of the circuit board to be tested;
the industrial personal computer controls a power supply to provide a power supply signal for a power supply port of the circuit board to be tested, provides a test excitation signal for a signal input port of the circuit board to be tested through the signal generator, acquires a test acquisition signal of a signal output port of the circuit board to be tested through the parameter measurement unit, and obtains a test result of the circuit board to be tested according to the test excitation signal and the test acquisition signal.
The further technical scheme is that the automatic test method further comprises the following steps: performing simulation analysis on the circuit structure of the circuit board to be tested, and dividing the circuit structure in the circuit board to be tested into a plurality of circuit modules, wherein each circuit module comprises a local circuit of the circuit structure in the circuit board to be tested; each circuit module is provided with a respective signal input port and a signal output port, and the signal input port of each circuit module reaches the signal output port of the circuit module through a local circuit in the circuit module;
the pin that the industrial personal computer confirms to wait to test circuit board's power supply port, signal input port and signal output port correspond respectively includes: the industrial personal computer acquires test configuration information, wherein the test configuration information is used for indicating pins of a power supply port of a circuit board to be tested, and pins of a signal input port and pins of a signal output port of each circuit module in the circuit board to be tested.
The further technical scheme is that the circuit board to be tested is an analog circuit board, the circuit structure of the circuit board to be tested is an analog circuit structure, and the automatic test method comprises the following steps:
for each circuit module of the circuit board to be tested, the industrial personal computer provides a test excitation signal corresponding to the circuit module for a signal input port of each circuit module through the signal generator, acquires a test acquisition signal of a signal output port of the circuit module through the parameter measurement unit, and determines that the local circuit test contained in the circuit module passes when the test acquisition signal of the signal output port of the circuit module meets the signal requirement of the circuit module, or determines that the local circuit test contained in the circuit module fails.
The further technical scheme is that the circuit board to be tested is a digital circuit board, the circuit structure of the circuit board to be tested is a digital circuit structure, and the automatic test method comprises the following steps:
the test configuration information acquired by the industrial personal computer is also used for indicating pins of the signal input port of the processor of the circuit board to be tested, and the industrial personal computer sequentially provides test trigger signals for the pins of the signal input port of the processor of the circuit board to be tested according to the test configuration information, wherein the test trigger signals are used for triggering the processor in the circuit board to be tested to execute a local circuit of a corresponding circuit module;
after each test trigger signal is provided, the industrial personal computer provides a test excitation signal corresponding to the circuit module for a signal input port of the circuit module corresponding to the test trigger signal through the signal generator, acquires a test acquisition signal of a signal output port of the circuit module through the parameter measurement unit, and determines that the local circuit test contained in the circuit module passes when the test acquisition signal of the signal output port of the circuit module meets the signal requirement of the circuit module, or determines that the local circuit test contained in the circuit module fails.
The further technical scheme is that the parameter measurement unit comprises a digital multimeter and an oscilloscope, and the industrial personal computer obtains test acquisition signals of the signal output port of the circuit board to be tested through the parameter measurement unit, wherein the test acquisition signals comprise:
Acquiring a voltage value, a voltage frequency and a resistance value of a signal output port of a circuit board to be tested through a digital multimeter;
and acquiring the voltage waveform of the signal output port of the circuit board to be tested through an oscilloscope.
The further technical scheme is that the automatic test method further comprises the following steps:
the industrial personal computer provides different test excitation signals for the signal input port of the circuit board to be tested, and acquires test acquisition signals of the signal output port of the circuit board to be tested under the different test excitation signals through the parameter measurement unit;
the different test excitation signals have different at least one of signal waveforms, signal amplitudes and signal frequencies, the signal waveforms being constant, sinusoidal or rectangular.
The further technical scheme is that the automatic test method further comprises the following steps:
after detecting that each pin of the connector of the circuit board to be tested is correspondingly spliced with each pin of the connector of the test base plate, the industrial personal computer reads pin resistance values at preset pins, wherein the pin resistance values of different circuit boards to be tested at the preset pins are different, and the pin resistance values at the preset pins are used for uniquely identifying a circuit board to be tested; and the industrial personal computer executes an automatic test method according to a test strategy corresponding to the pin resistance value at the preset pin.
The further technical scheme is that the automatic test method further comprises the following steps:
the method comprises the steps of disassembling a testing bottom plate, respectively butting all port pins in a self-checking port of the self-checking bottom plate with all channel connectors of a matrix switch board, externally leading out two multimeter connecting ports from the self-checking bottom plate, connecting all port pins of the self-checking port through a pre-wiring circuit in the self-checking bottom plate by each multimeter connecting port pin through a change-over switch, connecting and controlling the change-over switch in the self-checking bottom plate by an industrial personal computer, and respectively connecting the anode and the cathode of a digital multimeter with the two multimeter connecting ports of the self-checking bottom plate;
the industrial personal computer controls the on-off state of the change-over switch in the self-checking bottom plate and each relay in the matrix switch board, and sequentially traverses and closes different relays, so that a path is formed between the positive electrode and the negative electrode of the digital multimeter through paths where the different relays are positioned, the path resistance of each formed path is measured by the digital multimeter and fed back to the industrial personal computer, when the path resistances of the paths where the relays are positioned are all in a resistance range, the self-checking passing of the matrix switch board is determined, and otherwise, the self-checking of the matrix switch board is determined not to be passed.
The further technical scheme is that the automatic test method further comprises the following steps: connecting the industrial personal computer with a communication test input port and a communication test output port of the self-checking bottom plate through a bus resource board, and carrying out communication connection on the communication test input port and the communication test output port through a pre-wiring circuit in the self-checking bottom plate;
And the industrial personal computer sends communication test information to the self-checking bottom plate through the bus resource board, when the communication test information is detected through the communication test output port, the self-checking passing of the bus resource board is determined, and otherwise, the self-checking of the bus resource board is determined not to pass.
The further technical scheme is that the automatic test method further comprises the following steps: the method comprises the steps that the anode and the cathode of a power supply are respectively connected with an anode test input port and a cathode test input port of a self-checking bottom plate, an indicator lamp is connected between the anode test input port and the cathode test input port in the self-checking bottom plate, the anode test input port is connected with an anode test output port through preset wiring of the self-checking bottom plate, and the cathode test input port is connected with a cathode test output port through preset wiring of the self-checking bottom plate;
when the indicator light is lightened, determining that the self-checking of the power supply passes, otherwise, determining that the self-checking of the power supply does not pass;
when the self-checking of the power supply passes, connecting the anode and the cathode of the digital multimeter with the anode test output port and the cathode test output port of the self-checking bottom plate respectively, and determining that the self-checking of the digital multimeter passes when the voltage measured by the digital multimeter is the same as the voltage of the power supply signal provided by the power supply, or determining that the self-checking of the digital multimeter does not pass;
Switching to connect the oscillograph with the positive test output port and the negative test output port of the self-checking bottom plate, and determining that the self-checking of the oscillograph passes when the voltage waveform measured by the oscillograph is the same as the voltage waveform of the power supply signal provided by the power supply, or determining that the self-checking of the oscillograph does not pass;
and switching to connect the signal generator with the positive electrode test input port and the negative electrode test input port of the self-checking bottom plate, and determining that the self-checking of the signal generator passes when the voltage waveform output by the signal generator is the same as the voltage waveform measured by the oscilloscope, or determining that the self-checking of the signal generator does not pass.
The beneficial technical effects of the application are as follows:
the application discloses an automatic test method of an internal electronic regulator of a helicopter based on a multi-agent technology, which is characterized in that an automatic test platform is built based on an ATE (automatic test equipment) idea, the automatic test platform is combined with a designed test strategy to realize the automatic test method based on the multi-agent technology, a plurality of controllable program control units are used for building a distributed measurement and control system, test results are automatically generated by software and are used for reference of detection and maintenance personnel, the automatic test method can be used for automatic test of circuit boards to be tested of various types, the problems that the conventional manual test has high requirements on experience of operators, long test time and low test efficiency can be overcome, the maintenance efficiency can be improved, the test time of the circuit boards can be shortened, and the automatic test method has important application value for improving the automatic repair level of the electronic regulator of the helicopter.
Drawings
Fig. 1 is a schematic diagram of a centralized automatic test framework of the existing automatic test theory.
Fig. 2 is a schematic diagram of an automatic test platform and a connection structure between the automatic test platform and a circuit board to be tested.
FIG. 3 is a software architecture diagram of the automated test platform constructed in accordance with the present application.
Detailed Description
The following describes the embodiments of the present application further with reference to the drawings.
The application discloses an automatic test method of an internal electronic regulator of a helicopter based on a multi-agent technology, which is completed based on a built automatic test platform based on the multi-agent technology, wherein a test frame based on an automatic test theory is unfolded, and the test frame of the common automatic test theory mainly comprises two types of centralized automatic test frames and distributed automatic test frames: the centralized automatic test framework has the advantages of high integration level and simple structure, but has higher performance requirements on a test host, and is mainly used for constructing small and medium-sized automatic test systems. The distributed automatic test framework reduces the performance requirement on a test host through distributed design, is convenient for transverse expansion, but has complex design, needs to consider the instantaneity of communication among different sites, and is mainly used for constructing a large or ultra-large automatic test system. Considering the test requirement of the electronic regulator in the helicopter, the application builds an automatic test platform according to a centralized automatic test frame based on an automatic test theory.
The centralized automatic test framework mainly comprises three parts, namely an automatic test system ATE, a test program set TPS and a software development tool, and referring to the framework structure diagram shown in fig. 1, the software development tool provides a development environment for performing test logic design. The test program set TPS is the basis for implementing control of the automatic test system ATE for designing test logic with a software development tool. The automatic test system ATE is used for controlling according to the designed test logic to realize the test.
The application builds an automatic test platform based on a multi-agent technology according to the structure of a centralized automatic test frame for automatic test of an electronic regulator in a helicopter, wherein the architecture of an automatic test system ATE of the automatic test platform is shown in figure 2, and the automatic test platform comprises an industrial personal computer, a bus resource board, a matrix switch board, a power supply, a signal generator and a parameter measuring unit:
(1) The industrial personal computer is a core for realizing control and operation of the whole automatic test platform, is responsible for issuing various instructions, reading, processing, displaying, storing, printing and the like of test data, and can be realized by a PC or an embedded processor such as an ARM and an FPGA.
(2) The bus resource board is mainly used for realizing bus communication, the bus technology is commonly used in an automatic test system, the main function of the bus is to orderly interconnect all components of the hardware of the automatic test system to form a unified whole, meanwhile, the application of the bus structure also facilitates the expansion of various test instruments and power supply excitation of the system, and the continuous development of the bus technology ensures that the selection of common buses in the automatic test system is more and more, so that the bus resource board of the application supports at least one of a USB bus, an RS-232 bus, an RS-485 bus, an ISA bus and a PCI bus. And in practical application, the bus resource board provides various buses simultaneously so as to adapt to the functional characteristics of various extension instruments and fully exert the respective advantages of different bus communication modes.
(3) The matrix switch board comprises a plurality of relays, each relay is connected through a pre-wiring circuit in the matrix switch board to form a matrix switch array with the specification of M x N, the matrix switch array provides M x N channel connectors to the outside, and M and N are integer parameters respectively. The industrial personal computer is connected with and controls the on-off of each relay in the matrix switch board through the bus resource board, and different channel connectors in the matrix switch array can be conducted through different paths by controlling the on-off states of the relays. In practice, the matrix switch board is generally used with a power board and a conditioning board, where the power board supplies power to the relays in the matrix switch board.
(4) Power supply, signal generator and parameter measurement unit, which are responsible for providing test conditions such as voltage and input stimulus during testing, and for achieving signal acquisition. The power supply, the signal generator and the parameter measuring unit are respectively connected with different channel connectors of the matrix switch board. The industrial personal computer is connected with and controls the power supply, the signal generator and the parameter measuring unit through the bus resource board. In one embodiment, the parameter measurement unit includes a digital multimeter and an oscilloscope. In practical application, the output end of the signal generator is also connected with a conditioning plate, and a conditioning circuit in the conditioning plate is used for conditioning signals output by the signal generator.
In one example, the matrix switch forms an 8×64 matrix switch array, and 8 paths of terminals of the power supply, the signal generator, the digital multimeter and the oscilloscope are respectively connected to 8 channel connectors in the 8×64 matrix switch array.
(5) And the test bottom plate comprises a test port and a connector. The test device comprises a test base plate, a matrix switch board, a plurality of port pins, a plurality of contact pins, a plurality of circuit boards, a plurality of pins, a plurality of control pins and a plurality of control pins, wherein all port pins in the test port of the test base plate are respectively connected with all channel connectors of the matrix switch board, and the connector comprises a plurality of contact pins. The pins of the connector are connected to the port pins of the test ports of the test board through wiring structures inside the test board, respectively, thereby corresponding to the connection of the pins of the connector of the test board to the channel connection ports in the matrix switch array.
When the automatic test platform is applied, each contact pin of the connector of the circuit board to be tested is correspondingly inserted with each contact pin of the connector of the test base plate, and as the electronic regulator to be tested in the helicopter generally comprises a plurality of circuit boards to be tested, in one embodiment, only one connector is arranged on the test base plate, and different circuit boards to be tested are tested by replacing and inserting different circuit boards to be tested. Or in another embodiment, the test base plate is provided with a plurality of connectors, each pin of each connector is respectively connected with each port pin in the test port of the test base plate, when the connectors are arranged, a switching circuit is further arranged in the test base plate, the test port of the test base plate is connected with different connectors through the switching circuit, so that conduction between the different connectors and the test port is realized, and when in test, a plurality of different circuit boards to be tested are respectively plugged into the different connectors of the test base plate, the test port and each connector are respectively conducted, and the test circuit boards to be tested are respectively tested.
In another embodiment, the test boards in the automatic test platform are detachably replaced, and connectors on different test boards have different specifications to adapt to different circuit boards to be tested, and when a certain style of circuit board to be tested needs to be tested, the test boards with connectors of corresponding specifications are used.
The built software development tool of the automatic test platform uses a Visual C++6.0 development environment with safety and stability, and utilizes a built-in MFC architecture to design a Visual human-computer interaction interface.
As the core of software control of an automatic test platform, test software is the premise and the basis for realizing automatic test by utilizing the automatic test platform, and a good automatic test platform is required to be matched with a simple, efficient and stable test software. The test efficiency of the electronic regulator to be tested in the helicopter is closely related to the execution efficiency of the test software, wherein the execution efficiency of the test software is a set of the execution efficiency of each test item, so that the design of the test software focuses on how to improve the execution efficiency of each test item. The efficient execution of each test item is a good matching result between each functional module, so the premise of the efficient automatic test of the electronic regulator is the simple and stable modular design and the good matching between each module.
In order to improve the test efficiency of the electronic regulator to be tested and the execution efficiency of test software in the helicopter, the application adopts a top-down layered design concept, and specifically comprises three parts, namely a software application layer, a bus protocol layer and a bus driving layer, wherein the software application layer is a tie between a user and software, the function of the software application layer is embodied in processing, the user operation can be identified and converted into lower protocol data, and the analysis and display of the test data can be completed in the mode. The bus protocol layer is an encapsulated multi-bus protocol module and is responsible for encapsulation and calculation of binary data frames. The bus driving layer is responsible for converting a binary bus protocol into an electric signal, and the software design architecture of the bus driving layer is shown in fig. 3 and has the following characteristics: (1) In order to improve the running efficiency of the test software, a multithreading programming mode is adopted; (2) To ensure efficient communication between multiple threads, event-triggered mechanisms assist in data sharing between modules; (3) In order to improve the simplicity and stability of the software code, the software is developed in a modularized design mode; (4) In order to facilitate the test of the electronic regulator circuit board by a tester, the test software is matched with a proper man-machine interaction interface.
After the automatic test platform is built, each contact pin of the connector of the circuit board to be tested in the electronic regulator to be tested is correspondingly inserted with each contact pin of the connector of the test base plate, and the circuit board to be tested can be automatically tested by using the automatic test platform as follows:
(1) And the industrial personal computer determines pins corresponding to the power supply port, the signal input port and the signal output port of the circuit board to be tested. The specification of the connector of the circuit board to be tested is known in advance, and what part of the circuit structure in the circuit board to be tested is also known in advance is connected with each contact pin of the connector, so that the contact pins corresponding to the power supply port, the signal input port and the signal output port are also known, a user provides test configuration information by utilizing a human-computer interaction interface, and the industrial personal computer acquires the test configuration information, wherein the test configuration information is used for indicating the contact pins of the power supply port, the signal input port and the signal output port of the circuit board to be tested.
In one embodiment, before an automatic test platform is used for automatically testing a circuit board to be tested, firstly, simulation analysis is carried out on the circuit structure of the circuit board to be tested, the circuit structure in the circuit board to be tested is divided into a plurality of circuit modules, each circuit module comprises a local circuit of the circuit structure in the circuit board to be tested, and the local circuits of different circuit modules are independent of each other or have circuit coincidence. In the simulation analysis process, different circuit modules are divided into circuit boards to be tested according to actual circuit structures and test requirements, and local circuits in the different circuit modules generally have different circuit functions. Each circuit module has a respective signal input port and signal output port, the signal input port of each circuit module reaching the signal output port of the circuit module via a local circuit within the circuit module. The test configuration information obtained by the industrial personal computer is used for indicating the pins of the power supply port of the circuit board to be tested, and the pins of the signal input port and the pins of the signal output port of each circuit module in the circuit board to be tested.
The electronic regulator to be tested in the helicopter mainly comprises an analog circuit board and a digital circuit board, wherein the circuit structure of the circuit board to be tested is an analog circuit structure, and the circuit structure of the circuit board to be tested is a digital circuit structure. For example, for an electronic regulator to be tested in a helicopter, the electronic regulator comprises a digital circuit board and three analog circuit boards, wherein the three analog circuit boards are a signal conditioning board, a signal output board and a power board respectively:
the circuit module for carrying out simulation analysis and division on the digital circuit board comprises a disconnection module, a 125kHz module and a voltage time conversion module, and besides the three circuit modules, the digital circuit board also comprises a processor which is the basis for the operation of the circuit modules, and if the processor fails, the circuit modules are abnormal. The 125kHz module provides a clock reference for other circuit structures. The disconnection module and the voltage time conversion module are mutually independent and operate on the basis of normal operation of the processor.
The circuit modules for dividing the analog circuit structures in the signal conditioning board comprise an emergency switch module, a rotating speed comparison module, a frequency division module, a vortex pressing rotating speed module, an adjacent vortex pressing rotating speed module and a temperature sensor module, and the circuit modules for dividing the analog circuit structures in other analog circuit boards are different according to actual conditions.
(2) The industrial personal computer controls the on-off state of each relay in the matrix switch board card through the bus resource board card, and a conducting loop from a channel connection port connected with a power supply to a channel connection port connected with a pin of a power supply port of the circuit board to be tested is formed by utilizing the matrix switch array so as to supply power to the circuit board to be tested. The device is also used for forming a conduction loop from the channel connection port connected with the signal generator to the channel connection port connected with the pin of the signal input port of the circuit board to be tested and forming a conduction loop from the channel connection port connected with the parameter measuring unit to the channel connection port connected with the pin of the signal output port of the circuit board to be tested.
(3) The industrial personal computer controls a power supply to provide a power supply signal for a power supply port of the circuit board to be tested, provides a test excitation signal for a signal input port of the circuit board to be tested through the signal generator, acquires a test acquisition signal of a signal output port of the circuit board to be tested through the parameter measurement unit, and obtains a test result of the circuit board to be tested according to the test excitation signal and the test acquisition signal.
When the circuit board to be tested is an analog circuit board, for each circuit module of the circuit board to be tested, the industrial personal computer provides test excitation signals corresponding to the circuit modules for the signal input ports of each circuit module through the signal generator, acquires test acquisition signals of the signal output ports of the circuit modules through the parameter measurement unit, and determines that local circuit tests contained in the circuit modules pass when the test acquisition signals of the signal output ports of the circuit modules meet the signal requirements of the circuit modules, or determines that the local circuit tests contained in the circuit modules fail. And testing each circuit module of the analog circuit board in turn.
When the circuit board to be tested is a digital circuit board, the test configuration information obtained by the industrial personal computer is slightly different from the analog circuit board, and is also used for indicating pins of a signal input port of a processor of the circuit board to be tested, and the industrial personal computer sequentially provides test trigger signals for the pins of the signal input port of the processor of the circuit board to be tested according to the test configuration information, wherein the test trigger signals are used for triggering the processor in the circuit board to be tested to execute a local circuit of a corresponding circuit module. And after each test trigger signal is provided, the industrial personal computer provides a test excitation signal corresponding to the circuit module for the signal input port of the circuit module corresponding to the test trigger signal through the signal generator, acquires a test acquisition signal of the signal output port of the circuit module through the parameter measurement unit, and determines that the local circuit test contained in the circuit module passes when the test acquisition signal of the signal output port of the circuit module meets the signal requirement of the circuit module, or determines that the local circuit test contained in the circuit module fails. Each circuit module of the digital circuit board is tested in turn.
The industrial personal computer provides different test excitation signals for the signal input port of the circuit board to be tested, and obtains test acquisition signals of the signal output port of the circuit board to be tested under different test excitation signals through the parameter measurement unit. The different test excitation signals have different at least one of signal waveforms, signal amplitudes and signal frequencies, the signal waveforms being constant, sinusoidal or rectangular.
Whether for an analog circuit board or a digital circuit board, after the industrial personal computer provides a test excitation signal for a signal input port of the circuit board to be tested, the step of obtaining test acquisition signals of a signal output port of the circuit board to be tested through the parameter measurement unit comprises the following steps: acquiring a voltage value, a voltage frequency and a resistance value of a signal output port of a circuit board to be tested through a digital multimeter; and acquiring the voltage waveform of the signal output port of the circuit board to be tested through an oscilloscope.
In one example, when the circuit board to be tested is a digital circuit board, the industrial personal computer first provides a test trigger signal for indicating to execute the 125kHz circuit module to the pin of the signal input port of the processor of the circuit board to be tested, and the processor of the circuit board to be tested executes the 125kHz circuit module according to the test trigger signal. And then the industrial personal computer provides a rectangular wave signal of 250kHz for a signal input port of the 125kHz circuit module through the signal generator, and when the industrial personal computer acquires the rectangular wave signal of 125kHz from a signal output port of the 125kHz circuit module through the oscilloscope, the industrial personal computer determines that the signal requirement of the 125kHz circuit module is met and determines that the test of the 125kHz circuit module passes. And then the industrial personal computer provides a test trigger signal for indicating the execution of the disconnection module for the pin of the signal input port of the processor of the circuit board to be tested, and the test is continued.
In another example, when the circuit board to be tested is an analog circuit board, taking the rotational speed comparison module in the circuit board to be tested as an example, the industrial personal computer provides a rectangular wave signal with the frequency of 700Hz and the amplitude of 5V for the signal input port of the rotational speed comparison module through the signal generator, and detects the voltage value of the signal output port of the rotational speed comparison module through the digital multimeter. And then the industrial personal computer provides a rectangular wave signal with the frequency of 800Hz and the amplitude of 5V for a signal input port of the rotating speed comparison module through the signal generator, and detects the voltage value of a signal output port of the rotating speed comparison module through the digital multimeter. And then the industrial personal computer provides a rectangular wave signal with the frequency of 900Hz and the amplitude of 5V for a signal input port of the rotating speed comparison module through the signal generator, and detects the voltage value of a signal output port of the rotating speed comparison module through the digital multimeter. When the frequency of the rectangular wave signal provided for the signal input port is less than 750Hz, the voltage of the signal output port is 0V; when the frequency of the rectangular wave signal provided for the signal input port reaches 750Hz and the voltage of the signal output port is 5V, the test of the rotating speed comparison module is determined to pass, and otherwise, the test of the rotating speed comparison module is determined not to pass. The test methods for other circuit modules are also similar.
It can be seen from the above description that, for different circuit boards to be tested, especially for digital circuit boards and analog circuit boards, the automatic test method implemented by the automatic test platform set up in the present application is basically similar, but still has some differences, so in another embodiment, after detecting that each pin of the connector of the circuit board to be tested is correspondingly plugged with each pin of the connector of the test base board, the industrial personal computer reads the pin resistance value at the preset pin, where the pin resistance values of different circuit boards to be tested at the preset pin are different, where the pin resistance values at the preset pin are used to uniquely identify a circuit board to be tested. The industrial personal computer executes an automatic test method according to a test strategy corresponding to the pin resistance value at a preset pin, wherein the test strategy comprises whether to provide a test trigger signal for the pin of the signal input port of the processor of the circuit board to be tested or not, and further comprises signal requirements of each circuit module.
In the process of automatically testing the circuit board to be tested by utilizing the automatic test platform, the industrial personal computer also displays various test data in real time through a man-machine interaction interface, including tester information, test items, test contents, test buttons and the like. The tester information not only contains basic information of a user, but also contains basic information of a circuit board to be tested, test date and the like. The test Xiang Zhongbiao shows the test requirements, i.e. test items, of the circuit board to be tested, and the test requirements of each circuit board to be tested are different, and the test resources and the test strategies used by different test requirements are also different. The test button mainly embodies the test function of the electronic regulator circuit board test system. Such as start-up testing, data saving, data printing, software resetting, etc.
In addition, the stability of the automatic test platform is improved before the circuit board to be tested is actually tested, and the self-checking method of the built automatic test platform is further included. The self-checking of the automatic test platform comprises the following parts:
(1) Self-checking of power supply, signal generator, parameter measuring unit and other desk type instrument. Comprising the following steps:
the positive electrode and the negative electrode of the power supply are respectively connected with a positive electrode test input port and a negative electrode test input port of the self-checking bottom plate, an indicator lamp is connected between the positive electrode test input port and the negative electrode test input port inside the self-checking bottom plate, the positive electrode test input port is connected with a positive electrode test output port through a preset wiring of the self-checking bottom plate, and the negative electrode test input port is connected with a negative electrode test output port through a preset wiring of the self-checking bottom plate. And when the indicator lamp is lightened, determining that the self-checking of the power supply passes, and otherwise, determining that the self-checking of the power supply does not pass.
When the self-checking of the power supply passes, the positive electrode and the negative electrode of the digital multimeter are respectively connected with the positive electrode test output port and the negative electrode test output port of the self-checking bottom plate, when the voltage measured by the digital multimeter is the same as the voltage of the power supply signal provided by the power supply, the self-checking of the digital multimeter is determined to pass, and otherwise, the self-checking of the digital multimeter is determined to not pass.
And switching to connect the oscillograph with the positive test output port and the negative test output port of the self-checking bottom plate, and determining that the self-checking of the oscillograph passes when the voltage waveform measured by the oscillograph is the same as the voltage waveform of the power supply signal provided by the power supply, or determining that the self-checking of the oscillograph does not pass.
And switching to connect the signal generator with the positive electrode test input port and the negative electrode test input port of the self-checking bottom plate, and determining that the self-checking of the signal generator passes when the voltage waveform output by the signal generator is the same as the voltage waveform measured by the oscilloscope, or determining that the self-checking of the signal generator does not pass.
(2) Self-checking the matrix switch board.
The self-checking bottom plate externally leads out two multimeter connecting ports, each multimeter connecting port is connected with each port pin of the self-checking port through a pre-wiring circuit in the self-checking bottom plate and a change-over switch, the industrial personal computer is connected with and controls the change-over switch in the self-checking bottom plate, and the positive electrode and the negative electrode of the digital multimeter are respectively connected with the two multimeter connecting ports of the self-checking bottom plate.
The industrial personal computer controls the on-off state of the change-over switch in the self-checking bottom plate and each relay in the matrix switch board, and sequentially traverses and closes different relays, so that a path is formed between the positive electrode and the negative electrode of the digital multimeter through paths where the different relays are positioned, the path resistance of each formed path is measured by the digital multimeter and fed back to the industrial personal computer, when the path resistances of the paths where the relays are positioned are all in a resistance range, the self-checking passing of the matrix switch board is determined, and otherwise, the self-checking of the matrix switch board is determined not to be passed.
(3) Self-checking the bus resource board. The industrial personal computer is connected with a communication test input port and a communication test output port of the self-checking bottom plate through a bus resource board, and the communication test input port and the communication test output port are connected in a communication mode through a pre-wiring circuit in the self-checking bottom plate.
And the industrial personal computer sends communication test information to the self-checking bottom plate through the bus resource board, when the communication test information is detected through the communication test output port, the self-checking passing of the bus resource board is determined, and otherwise, the self-checking of the bus resource board is determined not to pass.
Through the self-checking process, the circuit board to be tested can be prevented from being electrified and damaged during formal testing, the test excitation signal applied to the circuit board to be tested can be prevented from damaging the circuit board to be tested, and the stability and the safety of the automatic test platform can be improved.
The above is only a preferred embodiment of the present application, and the present application is not limited to the above examples. It is to be understood that other modifications and variations which may be directly derived or contemplated by those skilled in the art without departing from the spirit and concepts of the present application are deemed to be included within the scope of the present application.
Claims (10)
1. An automatic test method for an internal electronic regulator of a helicopter based on a multi-agent technology is characterized by comprising the following steps:
an automatic test platform based on a multi-agent technology is built, the automatic test platform comprises an industrial personal computer, a bus resource board, a matrix switch board, a power supply, a signal generator, a parameter measurement unit and a test bottom board, the matrix switch board comprises a plurality of relays, each relay is connected through a pre-wiring circuit inside the matrix switch board to form a matrix switch array with the specification of M x N, the matrix switch array externally provides M x N channel connectors, the industrial personal computer is connected and controls each relay in the matrix switch board through the bus resource board, and the power supply, the signal generator and the parameter measurement unit are respectively connected with different channel connectors of the matrix switch board; the industrial personal computer is connected with and controls the power supply, the signal generator and the parameter measuring unit; each port pin in the test port of the test base plate is respectively abutted to each channel connection port of the matrix switch board, a connector is arranged on the test base plate and comprises a plurality of pins, and each pin of the connector is respectively connected with each port pin in the test port of the test base plate through a wiring structure in the test base plate; m and N are integer parameters;
Inserting each contact pin of the connector of the circuit board to be tested in the electronic regulator to be tested into each contact pin of the connector of the test bottom plate correspondingly;
the industrial personal computer determines pins corresponding to a power supply port, a signal input port and a signal output port of the circuit board to be tested, controls the on-off state of each relay through a bus data board, forms a conducting loop from a channel connection port connected with a power supply to a channel connection port connected with the pin of the power supply port of the circuit board to be tested by using the matrix switch array, forms a conducting loop from a channel connection port connected with a signal generator to a channel connection port connected with the pin of the signal input port of the circuit board to be tested, and forms a conducting loop from a channel connection port connected with a parameter measurement unit to a channel connection port connected with the pin of the signal output port of the circuit board to be tested;
the industrial personal computer controls the power supply to provide a power supply signal for a power supply port of the circuit board to be tested, the industrial personal computer provides a test excitation signal for a signal input port of the circuit board to be tested through the signal generator, acquires a test acquisition signal of a signal output port of the circuit board to be tested through the parameter measurement unit, and obtains a test result of the circuit board to be tested according to the test excitation signal and the test acquisition signal.
2. The automated test method of claim 1, further comprising: performing simulation analysis on the circuit structure of the circuit board to be tested, and dividing the circuit structure in the circuit board to be tested into a plurality of circuit modules, wherein each circuit module comprises a local circuit of the circuit structure in the circuit board to be tested; each circuit module is provided with a respective signal input port and a signal output port, and the signal input port of each circuit module reaches the signal output port of the circuit module through a local circuit in the circuit module;
the industrial personal computer determines that pins corresponding to a power supply port, a signal input port and a signal output port of the circuit board to be tested respectively comprise: the industrial personal computer acquires test configuration information, wherein the test configuration information is used for indicating pins of a power supply port of the circuit board to be tested, and pins of a signal input port and pins of a signal output port of each circuit module in the circuit board to be tested.
3. The automatic test method according to claim 2, wherein the circuit board to be tested is an analog circuit board, and the circuit structure of the circuit board to be tested is an analog circuit structure, the automatic test method comprising:
For each circuit module of the circuit board to be tested, the industrial personal computer provides a test excitation signal corresponding to the circuit module for a signal input port of each circuit module through the signal generator, acquires a test acquisition signal of a signal output port of the circuit module through the parameter measurement unit, and determines that a local circuit test contained in the circuit module passes when the test acquisition signal of the signal output port of the circuit module meets the signal requirement of the circuit module, or determines that the local circuit test contained in the circuit module fails.
4. The automatic test method of claim 2, wherein the circuit board to be tested is a digital circuit board, and the circuit structure of the circuit board to be tested is a digital circuit structure, the automatic test method comprising:
the test configuration information acquired by the industrial personal computer is also used for indicating pins of the signal input port of the processor of the circuit board to be tested, the industrial personal computer sequentially provides test trigger signals for the pins of the signal input port of the processor of the circuit board to be tested according to the test configuration information, and the test trigger signals are used for triggering the processor in the circuit board to be tested to execute a local circuit of a corresponding circuit module;
After each test trigger signal is provided, the industrial personal computer provides a test excitation signal corresponding to the circuit module for a signal input port of the circuit module corresponding to the test trigger signal through the signal generator, acquires a test acquisition signal of a signal output port of the circuit module through the parameter measurement unit, and determines that the local circuit test contained in the circuit module passes when the test acquisition signal of the signal output port of the circuit module meets the signal requirement of the circuit module, or determines that the local circuit test contained in the circuit module fails.
5. The automatic test method according to claim 1, wherein the parameter measurement unit includes a digital multimeter and an oscilloscope, and the industrial personal computer obtaining, by the parameter measurement unit, a test acquisition signal of the signal output port of the circuit board to be tested includes:
acquiring a voltage value, a voltage frequency and a resistance value of a signal output port of the circuit board to be tested through the digital multimeter;
and acquiring the voltage waveform of the signal output port of the circuit board to be tested through the oscilloscope.
6. The automated test method of claim 1, further comprising:
The industrial personal computer provides different test excitation signals for the signal input port of the circuit board to be tested, and acquires test acquisition signals of the signal output port of the circuit board to be tested under different test excitation signals through the parameter measurement unit;
the different test excitation signals have different at least one of signal waveforms, signal amplitudes and signal frequencies, the signal waveforms being constant, sinusoidal or rectangular.
7. The automated test method of claim 1, further comprising:
after detecting that each pin of the connector of the circuit board to be tested is correspondingly spliced with each pin of the connector of the test bottom plate, the industrial personal computer reads pin resistance values at preset pins, pin resistance values of different circuit boards to be tested at the preset pins are different, and the pin resistance values at the preset pins are used for uniquely identifying one style of circuit board to be tested; and the industrial personal computer executes the automatic test method according to a test strategy corresponding to the pin resistance value at the preset pin.
8. The automated test method of claim 1, further comprising:
The method comprises the steps of disassembling the test base plate, respectively butting all port pins in a self-checking port of the self-checking base plate with all channel connectors of the matrix switch board, externally leading out two multimeter connecting ports from the self-checking base plate, connecting all port pins of the self-checking port by each multimeter connecting port through a pre-wiring path in the self-checking base plate through a change-over switch, connecting and controlling the change-over switch in the self-checking base plate by an industrial personal computer, and respectively connecting the anode and the cathode of a digital multimeter with the two multimeter connecting ports of the self-checking base plate;
the industrial personal computer controls the on-off state of each relay in the self-checking bottom plate and the on-off state of each relay in the matrix switch board, and sequentially traverses and closes different relays, so that a path is formed between the positive electrode and the negative electrode of the digital multimeter through paths where different relays are located, the path resistance of each formed path is measured by the digital multimeter and fed back to the industrial personal computer, when the path resistance of each path where each relay is located is within a resistance range, the self-checking passing of the matrix switch board is determined, and otherwise, the self-checking of the matrix switch board is determined not to be passed.
9. The automated test method of claim 8, further comprising: connecting the industrial personal computer with a communication test input port and a communication test output port of the self-checking bottom plate through the bus resource board, wherein the communication test input port and the communication test output port are in communication connection through a pre-wiring circuit in the self-checking bottom plate;
the industrial personal computer sends communication test information to the self-checking bottom plate through the bus resource board, when the communication test information is detected through the communication test output port, the self-checking passing of the bus resource board is determined, and otherwise, the self-checking of the bus resource board is determined not to pass.
10. The automated test method of claim 8, further comprising: the method comprises the steps that the positive electrode and the negative electrode of a power supply are respectively connected with a positive electrode test input port and a negative electrode test input port of a self-checking bottom plate, an indicator lamp is connected between the positive electrode test input port and the negative electrode test input port in the self-checking bottom plate, the positive electrode test input port is connected with a positive electrode test output port through a preset wiring of the self-checking bottom plate, and the negative electrode test input port is connected with a negative electrode test output port through a preset wiring of the self-checking bottom plate;
When the indicator lamp is lightened, determining that the self-checking of the power supply passes, otherwise, determining that the self-checking of the power supply does not pass;
when the self-checking of the power supply passes, connecting the anode and the cathode of a digital multimeter with an anode test output port and a cathode test output port of the self-checking bottom plate respectively, and determining that the self-checking of the digital multimeter passes when the voltage measured by the digital multimeter is the same as the voltage of a power supply signal provided by the power supply, otherwise determining that the self-checking of the digital multimeter does not pass;
switching to connect an oscilloscope with the positive test output port and the negative test output port of the self-checking bottom plate, and determining that the self-checking of the oscilloscope passes when the voltage waveform measured by the oscilloscope is the same as the voltage waveform of a power supply signal provided by the power supply, or determining that the self-checking of the oscilloscope does not pass;
and switching to connect the signal generator with the positive electrode test input port and the negative electrode test input port of the self-checking bottom plate, and determining that the self-checking of the signal generator passes when the voltage waveform output by the signal generator is the same as the voltage waveform measured by the oscilloscope, or determining that the self-checking of the signal generator does not pass.
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