CN108072830B - Three-floating inertia platform single plate automatic testing device - Google Patents
Three-floating inertia platform single plate automatic testing device Download PDFInfo
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- CN108072830B CN108072830B CN201711460595.9A CN201711460595A CN108072830B CN 108072830 B CN108072830 B CN 108072830B CN 201711460595 A CN201711460595 A CN 201711460595A CN 108072830 B CN108072830 B CN 108072830B
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Abstract
An automatic testing device for a single plate of a three-floating inertial platform comprises an alternating current-direct current power supply module, an analog signal output module, a digital signal output module, a bus signal transceiving module, a rotary transformer output module, a switch module, an adapter, a measuring module, a main control module and a clock module; designing corresponding special adapters according to different types of circuits, wherein the special adapters are used for switching the tested circuit and the test host; the test resource self-checking adapter interconnects all resources in the test host to form a test loop for self-checking of the equipment test resources. The three-floating inertial platform circuit board automatic electrifying, automatic testing and automatic report forming can be realized through resource program control, switch switching and calculation interpretation. The invention is compatible with various circuit tests in all three-floating inertial platforms, the full-automatic test effectively shortens the test time, improves the test and production efficiency of the three-floating inertial platform circuit, and reduces the risk of circuit test damage caused by human factors.
Description
Technical Field
The invention relates to an automatic testing device for a single plate of a three-floating inertial platform, and belongs to the technical field of automatic testing.
Background
The purpose of the inertia platform circuit test is to eliminate unqualified products in early stage through circuit tests under various conditions such as circuit function debugging, environment testing, aging testing and the like in the early stage of product production, the requirement on the test coverage of the circuit in the production process of the product is strict, and the reliable operation of the inertia platform after the inertia platform delivers whole arrows/bullets is ensured, so the test requirement on the inertia platform circuit is also strict. The three-floating series inertial platform circuit has complex realization functions, so that the input and output signals are various, the test requirement on the output signals is strict, a large amount of test resources are needed if a test environment is built by using general desktop test equipment, and the method needs more human participation, has low test efficiency and occupies more resources. Three float a series inertia platform circuit variety is many, if for each kind of circuit veneer customization special test equipment, then need more professional equipment, inconvenient unified management of equipment, and can cause the waste of test resource. The three-floating inertial platform has various circuits, complex circuit realization functions and high test precision, and how to realize the test of all circuit boards of the three-floating inertial platform under limited resources is a technical problem to be solved urgently in the field.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the device overcomes the defects of circuit testing of the existing three-floating inertial platform, provides the automatic testing device for the single plates of the three-floating inertial platform, realizes automatic testing of all the single plates of the three-floating inertial platform, and effectively improves the testing efficiency.
The technical scheme of the invention is as follows:
the automatic testing device for the single plate of the three-floating inertial platform comprises an alternating current/direct current power supply module, an analog signal output module, a digital signal output module, a bus signal transceiving module, a rotary transformer output module, a switch module, an adapter, a measuring module, a main control module and a clock module;
the adapter is connected to the circuit board to be tested, and is used for switching the received signals to the circuit board to be tested and switching and outputting the signals of the circuit board to be tested;
the switch module selects the adapter to access the test point of the test unit under the control of the main control module;
the alternating current and direct current power supply module provides power for the whole testing device and outputs alternating current or direct current power to the adapter under the control of the main control module;
the analog signal output module outputs a constant voltage with adjustable amplitude, a constant current signal with adjustable amplitude or a sinusoidal signal with adjustable amplitude and frequency to the adapter;
the digital signal output module outputs a digital I/O signal to the adapter, and the adapter is connected to the circuit board to be tested;
the bus signal transceiver module outputs a serial bus signal or a parallel bus signal to the adapter under the control of the main control module, receives return data transmitted by the circuit board to be tested through the adapter, sends the return data to the main control module, and the return data is stored by the main control module;
the rotary transformer output module receives alternating current voltage F output by the alternating current-direct current power supply module, receives an angle instruction sigma sent by the main control module, and outputs sine and cosine signals to the adapter;
the measurement module comprises the following test units: the device comprises a voltage measuring unit, a current measuring unit, a frequency acquisition unit, an oscilloscope and a frequency response analyzer, wherein each testing unit is selectively connected to a circuit board through a switch module, acquires an output signal and sends the output signal to a main control module;
the clock module provides a clock for the circuit board through the adapter;
the main control module controls the AC/DC power supply module, the analog signal output module, the digital signal output module, the bus signal transceiving module and the rotary transformer output module to output signals to the adapter; sending an angle command sigma to the rotary transformer; the control switch module selects the test unit accessed in the measurement module and selects the test point of the circuit board to be tested accessed by the adapter; receiving test data sent by a bus signal transceiver module, comparing a frame header with a check code to judge the correctness of a communication protocol, comparing a received data bit with expected data to judge the correctness of the data, storing the data, and outputting a bus receiving error mark if an error exists; and receiving and storing the acquired data sent by each unit of the measuring module, judging whether the acquired data is qualified or not, and outputting an error mark of a corresponding item if the acquired data is not qualified.
Preferably, a signal conditioning unit and a load unit are arranged in the adapter, the signal conditioning unit is used for connecting the signals output by the bus signal transceiving module to the circuit board after impedance matching, and connecting the signals output by the alternating current/direct current power supply module, the analog signal output module, the digital signal output module and the rotary transformer output module and the clock module to the circuit board; the load unit provides load for the output of the circuit board to be tested and connects the load output signal to the switch module.
Preferably, each circuit board to be tested is provided with a corresponding adapter for signal transfer.
Preferably, F is an excitation signal of 2kHz/4V or 4kHz/5.5V, and the sine and cosine signals output by the resolver output module are fssin σ and fscos σ, respectively.
Preferably, the test system further comprises a human-computer interaction module used for a tester to select a test item and read a test result and test data.
Preferably, the test items comprise digital parallel bus tests, the main control module selects the analog signal output module to output a constant voltage or constant current signal according to the excitation type required by the circuit board to be tested, or the rotary transformer outputs sine and cosine signals as excitation signals to be output to the circuit board to be tested, and the clock module is output to the circuit board to be tested; the circuit board to be tested converts the excitation signal into a digital signal by using a clock signal as a frequency scale, the digital signal is output through a digital parallel bus of the bus signal transceiving module, the main control module controls the bus signal transceiving module to receive the signal output by the digital parallel bus through reading operation, and judges whether the signal is consistent with the output which should be obtained by the excitation signal or not and judges whether the output function of the digital parallel bus is qualified or not.
Preferably, the digital parallel bus test further comprises: the main control module controls the bus signal transceiving module to send a test instruction to a circuit board to be tested through a bus, the circuit board to be tested receives the test instruction and then converts the test instruction into current, voltage or PWM (pulse width modulation) wave to be output, the main control module judges the type and the qualified range of the signal output by the circuit board to be tested according to the sent test instruction, if the output is the current, the current measuring unit is controlled to collect the current, if the output is the voltage, the voltage measuring unit is controlled to collect the voltage, if the output is the PWM wave, the oscilloscope collects the waveform and the duty ratio of the PWM wave, and after the main control module receives the collected signal, whether the signal is in the qualified range is.
Preferably, the test items comprise digital serial bus tests, the main control module controls the analog signal output module to output constant voltage to the circuit board to be tested, the circuit board to be tested converts the voltage signals into digital quantity and then stores the digital quantity, the bus signal receiving and transmitting module is controlled to perform handshaking with the circuit board to be tested by using a serial bus and read the digital quantity, and the main control module judges whether the digital quantity is correct and judges whether the digital serial bus receiving and transmitting function is qualified.
Preferably, the digital serial bus test further comprises: the main control module controls the digital signal output module to output digital I/O signals to enable the power level of the circuit board to be tested to output, the main control module controls the bus signal transceiving module to send control instructions to the circuit board to be tested by using the serial bus, the circuit board to be tested outputs PWM waves after performing digital-to-analog conversion and power amplification, the oscilloscope collects the waveforms and duty ratios of the PWM waves, and the main control module judges whether the waveforms and duty ratios of the collected PWM waves are in a qualified range and judges whether the digital serial bus sending function is qualified or not after receiving the waveforms and duty ratios of the collected PWM waves.
Preferably, the test items include a frequency signal output test, the main control module controls the alternating current-direct current power supply to output a direct current power supply to the circuit board to be tested to supply power to the frequency standard circuit, the frequency acquisition unit is controlled to acquire the frequency signal output by the frequency standard circuit and send the frequency signal to the main control module, and the main control module judges whether the frequency signal output function is qualified or not in a qualified range after receiving the frequency signal.
Preferably, the test items comprise a control loop dynamic characteristic test, the main control module controls the analog signal output module to output a sinusoidal signal to a control loop of the circuit board to be tested as an excitation to control the alternating current/direct current power supply to output a direct current power supply to the circuit board to be tested to supply power to the control loop, the frequency response analyzer collects the sinusoidal signal output by the analog signal output module and a response signal output by the control loop to perform frequency response analysis, an analysis result is sent to the main control module, and after the main control module receives the analysis result, whether the analysis result is in a qualified range is judged, and whether the control loop dynamic characteristic is qualified is judged.
Preferably, the test device further comprises a self-test adapter, and the automatic test device performs self-test before starting the test.
Preferably, the self-test process is as follows: the main control module controls the AC/DC power supply module to output an AC or DC power supply to the self-checking adapter, the self-checking adapter connects the AC/DC power supply output by the AC/DC power supply module to the voltage measuring unit through the switch module, and the main control module judges whether the voltage acquired by the voltage measuring unit is consistent with the theoretical output voltage and whether the functions of the AC/DC power supply module, the switch module and the voltage measuring unit are normal or not;
the main control module controls the analog signal output module to output constant voltage with adjustable amplitude, and the self-checking adapter connects the constant voltage to the voltage measuring unit through the switch module; the main control module controls the analog signal output module to output a constant current signal with adjustable amplitude, and the self-checking adapter connects the constant voltage to the current measuring unit through the switch module; the main control module controls the analog signal output module to output an amplitude-frequency-adjustable sinusoidal signal to the self-checking adapter, the self-checking adapter connects the sinusoidal signal to the frequency acquisition unit through the switch module to acquire signal amplitude frequency and oscilloscope acquisition waveform, the main control module judges whether the signal amplitude frequency acquired by the frequency acquisition unit and the oscilloscope acquisition waveform are consistent with a theoretical value, and judges whether the functions of the analog signal output module, the switch module, the current measurement unit, the frequency acquisition unit and the oscilloscope are normal;
the main control module controls the digital signal output module to output a digital I/O signal to the self-checking adapter, the self-checking adapter connects the digital I/O signal to the voltage measuring unit through the switch module, and the main control module judges whether the voltage acquired by the voltage measuring unit is consistent with the theoretical output voltage and whether the functions of the digital signal output module, the switch module and the voltage measuring unit are normal or not;
the main control module controls the clock module to output a clock signal to the self-checking adapter, and the self-checking adapter connects the clock signal to the frequency acquisition unit through the switch module; the main control module judges whether the frequency of the clock signal acquired by the frequency acquisition unit is consistent with a theoretical value or not, and judges whether the functions of the clock module and the frequency acquisition unit are normal or not.
Preferably, the single board automatic test device integrates other modules in the test host except the adapter, and the tested circuit board is inserted into the adapter; the adapter is connected to the test host through the pluggable interface and is locked through the pull-in locking device.
Preferably, if the main control module judges that the test result is unqualified, an alarm prompt is output.
Compared with the prior art, the invention has the beneficial effects that:
(1) compared with the existing testing method, the single-board automatic testing device of the three-floating inertial platform requires that the special tester corresponding to each circuit board is changed into a testing host combined with a plurality of adapters, so that testing resources are reasonably integrated, and the cost is saved.
(2) The test resources in the test host of the single board automatic test device of the three-floating inertial platform adopt the modular design, the resources can be configured according to the requirements of users, the test function is comprehensive, and the configuration is convenient.
(3) The automatic testing device for the single board of the three-floating inertial platform is used for automatically testing and automatically forming a test report in the whole testing process, changes the conventional testing work in the circuit production process from a few hours to a few minutes, and effectively improves the testing efficiency.
(4) The automatic testing device for the single plate of the three-floating inertial platform reduces errors caused by human operation factors, and ensures the safety of a tested product by the automatic interpretation and alarm functions.
Drawings
FIG. 1 is a block diagram of the structure of a single board automatic testing device of a three-floating inertial platform according to the present invention;
FIG. 2 is a schematic diagram of the appearance of the single-board automatic testing device for the three-floating inertial platform of the present invention.
Detailed Description
As shown in fig. 1, the automatic testing device for a single board of a three-floating inertial platform of the invention comprises an alternating current/direct current power supply module, an analog signal output module, a digital signal output module, a bus signal transceiving module, a rotary transformer output module, a switch module, an adapter, a measuring module, a main control module, a clock module and a human-computer interaction module.
The adapter is connected to a circuit board to be tested, and is used for switching signals of the circuit board to be tested, a signal conditioning unit and a load unit are arranged in the adapter, the signal conditioning unit is used for connecting signals output by the bus signal transceiving module to the circuit board after impedance matching is carried out on the signals, the signals output by the alternating current/direct current power supply module, the analog signal output module, the digital signal output module and the rotary transformer output module and the clock module are connected to the circuit board, and the load unit is used for providing loads for the output of the circuit board to be tested and connecting load output signals to; each circuit board to be tested is provided with a special adapter for signal switching.
The switch module is used for selecting the test unit accessed in the measurement module and selecting the test point accessed by the adapter under the control of the main control module.
The alternating current/direct current power supply module supplies power to the whole testing device, outputs alternating current or direct current power to the adapter under the control of the main control module, and is connected to the circuit board to be tested by the adapter;
the analog signal output module outputs a constant voltage with adjustable amplitude, a constant current signal with adjustable amplitude or a sine signal with adjustable amplitude and frequency to the adapter, and the adapter is connected to the circuit board to be tested;
the digital signal output module outputs a digital I/O signal to the adapter, and the adapter is connected to the circuit board to be tested;
the bus signal transceiver module outputs serial bus signals or parallel bus signals under the control of the main control module, the serial bus signals or the parallel bus signals are connected to the circuit board to be tested through the adapter, return data transmitted by the circuit board to be tested through the adapter are received and sent to the main control module, and the return data are stored by the main control module;
the rotary transformer output module receives an alternating current voltage F output by the alternating current and direct current power supply module, wherein the F is an excitation signal of 2kHz/4V or 4kHz/5.5V, receives an angle instruction sigma sent by the main control module, outputs F & ltsin & gtsigma and F & ltcos & gtsigma to the adapter, and is connected to a circuit board to be tested through the adapter;
the measuring module comprises a voltage measuring unit, a current measuring unit, a frequency acquisition unit, an oscilloscope and a frequency response analyzer, wherein each unit is connected to the switch module, selectively connected to the circuit board under the control of the switch module, acquires an output signal and sends the output signal to the main control module; the voltage measuring unit is used for measuring output voltage, the current measuring unit is used for measuring output current, the frequency acquisition unit is used for measuring the frequency of an output signal, the oscilloscope is used for acquiring and storing the waveform of the output signal, and the frequency response analyzer is used for testing the dynamic characteristics of the control loop.
The clock module provides a clock for the circuit board through the adapter;
the main control module controls the AC/DC power supply module, the analog signal output module, the digital signal output module, the bus signal transceiving module and the rotary transformer output module to output signals to the adapter; sending an angle command sigma to the rotary transformer; the control switch module selects the test unit accessed in the measurement module and selects the test point of the circuit board to be tested accessed by the adapter; receiving test data sent by a bus signal transceiver module, comparing a frame header with a check code to judge the correctness of a communication protocol, comparing a received data bit with expected data to judge the correctness of the data, storing the data, and outputting a bus receiving error mark if an error exists; receiving and storing the acquired data sent by each unit of the measuring module, judging whether the acquired data is qualified or not, and outputting an error mark of a corresponding item if the acquired data is not qualified;
the man-machine interaction module is used for the tester to select the test items and read the test results and the test data.
The test items comprise a digital parallel bus test, a digital serial bus test, a frequency signal output test and a control loop dynamic characteristic test.
A, the main control module selects an analog signal output module to output a constant voltage or constant current signal or a rotary transformer to output sine and cosine signals to the circuit board to be tested according to the excitation type required by the circuit board to be tested, and outputs a clock module to the circuit board to be tested; the circuit board to be tested converts the excitation signal into a digital signal by using a clock signal as a frequency scale, the digital signal is output through a digital parallel bus of the bus signal transceiving module, the main control module controls the bus signal transceiving module to receive the signal output by the digital parallel bus through reading operation, and judges whether the signal is consistent with the output which should be obtained by the excitation signal or not and judges whether the output function of the digital parallel bus is qualified or not; b. the main control module controls the bus signal transceiving module to send a test instruction to a circuit board to be tested through a bus, the circuit board to be tested receives the test instruction and then converts the test instruction into current, voltage or PWM (pulse width modulation) wave to be output, the main control module judges the type and the qualified range of the signal output by the circuit board to be tested according to the sent test instruction, if the output is the current, the current measuring unit is controlled to collect the current, if the output is the voltage, the voltage measuring unit is controlled to collect the voltage, if the output is the PWM wave, the oscilloscope collects the waveform and the duty ratio of the PWM wave, and after the main control module receives the collected signal, whether the signal is in the qualified range is.
A, testing a digital serial bus, namely a main control module controls an analog signal output module to output constant voltage to a circuit board to be tested, the circuit board to be tested converts a voltage signal into a digital quantity and then stores the digital quantity, a bus signal receiving and transmitting module is controlled to perform handshake with the circuit board to be tested by using a serial bus and read the digital quantity, and the main control module judges whether the digital quantity is correct and judges whether the receiving and transmitting function of the digital serial bus is qualified; b. the main control module controls the digital signal output module to output digital I/O signals to enable the power level of the circuit board to be tested to output, the main control module controls the bus signal transceiving module to send control instructions to the circuit board to be tested by using the serial bus, the circuit board to be tested outputs PWM waves after performing digital-to-analog conversion and power amplification, the oscilloscope collects the waveforms and duty ratios of the PWM waves, and the main control module judges whether the waveforms and duty ratios of the collected PWM waves are in a qualified range and judges whether the digital serial bus sending function is qualified or not after receiving the waveforms and duty ratios of the collected PWM waves.
And (3) testing the output of the frequency signal, controlling the alternating current-direct current power supply to output a direct current power supply to the circuit board to be tested by the main control module to supply power to the frequency standard circuit, controlling the frequency acquisition unit to acquire the frequency signal output by the frequency standard circuit and send the frequency signal to the main control module, judging whether the frequency signal is in a qualified range after the main control module receives the frequency signal, and judging whether the output function of the time-of-reading frequency signal is qualified.
The control loop dynamic characteristic test comprises that a main control module controls an analog signal output module to output a sine signal to a control loop of a circuit board to be tested to serve as an excitation, an alternating current-direct current power supply is controlled to output a direct current power supply to the circuit board to be tested to supply power to the control loop, a frequency response analyzer collects the sine signal output by the analog signal output module and a response signal output by the control loop to perform frequency response analysis, an analysis result is sent to the main control module, and the main control module judges whether the dynamic characteristic of the control loop is qualified or not in a qualified range after receiving the analysis result.
The invention can also select to configure the self-checking adapter, and before starting the test, the self-checking of the automatic test device is carried out. The self-checking process is as follows: the main control module controls the AC/DC power supply module to output an AC or DC power supply to the self-checking adapter, the self-checking adapter connects the AC/DC power supply output by the AC/DC power supply module to the voltage measuring unit through the switch module, and the main control module judges whether the voltage acquired by the voltage measuring unit is consistent with the theoretical output voltage and whether the functions of the AC/DC power supply module, the switch module and the voltage measuring unit are normal or not;
the main control module controls the analog signal output module to output constant voltage with adjustable amplitude, and the self-checking adapter connects the constant voltage to the voltage measuring unit through the switch module; the main control module controls the analog signal output module to output a constant current signal with adjustable amplitude, and the self-checking adapter connects the constant voltage to the current measuring unit through the switch module; the main control module controls the analog signal output module to output an amplitude-frequency-adjustable sinusoidal signal to the self-checking adapter, the self-checking adapter connects the sinusoidal signal to the frequency acquisition unit through the switch module to acquire signal amplitude frequency and oscilloscope acquisition waveform, the main control module judges whether the signal amplitude frequency acquired by the frequency acquisition unit and the oscilloscope acquisition waveform are consistent with a theoretical value, and judges whether the functions of the analog signal output module, the switch module, the current measurement unit, the frequency acquisition unit and the oscilloscope are normal;
the main control module controls the digital signal output module to output a digital I/O signal to the self-checking adapter, the self-checking adapter connects the digital I/O signal to the voltage measuring unit through the switch module, and the main control module judges whether the voltage acquired by the voltage measuring unit is consistent with the theoretical output voltage and whether the functions of the digital signal output module, the switch module and the voltage measuring unit are normal or not;
the main control module controls the clock module to output a clock signal to the self-checking adapter, and the self-checking adapter connects the clock signal to the frequency acquisition unit through the switch module; the main control module judges whether the frequency of the clock signal acquired by the frequency acquisition unit is consistent with a theoretical value or not, and judges whether the functions of the clock module and the frequency acquisition unit are normal or not.
As shown in fig. 2, a modularized and automated testing method compatible with three-floating inertial platform circuit is suitable for testing various inertial platform circuits, and comprises a testing host 1, an adapter 2, a tested circuit board 3 (a plurality of), a pluggable interface 4, a standing-pulling locking device 5 and a display 6.
The other modules except the adapter are integrated in the test host 1, and the circuit board 3 to be tested is inserted into the adapter 2; the adapter 2 is connected to the test host 1 through a pluggable interface 4 and is locked through a pull-in locking device 5; the display 6 displays the test items and results.
The technical solution of the invention is as follows: the three-floating-inertia-platform-compatible circuit modularization automatic test method comprises the following steps:
(1) installing a test resource self-checking adapter to a test host;
(2) controlling a computer to perform test self-checking interpretation;
(3) selecting a special adapter according to the model of the tested piece, and replacing the special adapter to the test host;
(4) selecting a test item for automatic test;
(5) the test software displays the test result in real time, automatically judges whether the data are out of tolerance or not, and gives an alarm when the data are abnormal;
(6) and obtaining a final test result of the tested piece, and generating a test report.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (15)
1. An automatic testing device for a single plate of a three-floating inertial platform is characterized by comprising an alternating current-direct current power supply module, an analog signal output module, a digital signal output module, a bus signal transceiving module, a rotary transformer output module, a switch module, an adapter, a measuring module, a main control module and a clock module;
the adapter is connected to the circuit board to be tested, and is used for switching the received signals to the circuit board to be tested and switching and outputting the signals of the circuit board to be tested;
the switch module selects the adapter to access the test point of the test unit under the control of the main control module;
the alternating current and direct current power supply module provides power for the whole testing device and outputs alternating current or direct current power to the adapter under the control of the main control module;
the analog signal output module outputs a constant voltage with adjustable amplitude, a constant current signal with adjustable amplitude or a sinusoidal signal with adjustable amplitude and frequency to the adapter;
the digital signal output module outputs a digital I/O signal to the adapter, and the adapter is connected to the circuit board to be tested;
the bus signal transceiver module outputs a serial bus signal or a parallel bus signal to the adapter under the control of the main control module, receives return data transmitted by the circuit board to be tested through the adapter, sends the return data to the main control module, and the return data is stored by the main control module;
the rotary transformer output module receives the alternating current voltage F output by the alternating current-direct current power supply module, receives the angle sigma sent by the main control module, and outputs sine and cosine signals to the adapter;
the measurement module comprises the following test units: the device comprises a voltage measuring unit, a current measuring unit, a frequency acquisition unit, an oscilloscope and a frequency response analyzer, wherein each testing unit is selectively connected to a circuit board through a switch module, acquires an output signal and sends the output signal to a main control module;
the clock module provides a clock for the circuit board through the adapter;
the main control module controls the AC/DC power supply module, the analog signal output module, the digital signal output module, the bus signal transceiving module and the rotary transformer output module to output signals to the adapter; sending the angle sigma to the rotary transformer; the control switch module selects the test unit accessed in the measurement module and selects the test point of the circuit board to be tested accessed by the adapter; receiving test data sent by a bus signal transceiver module, comparing a frame header with a check code to judge the correctness of a communication protocol, comparing a received data bit with expected data to judge the correctness of the data, storing the data, and outputting a bus receiving error mark if an error exists; and receiving and storing the acquired data sent by each unit of the measuring module, judging whether the acquired data is qualified or not, and outputting an error mark of a corresponding item if the acquired data is not qualified.
2. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1, characterized in that: a signal conditioning unit and a load unit are arranged in the adapter, the signal conditioning unit is used for connecting the signals output by the bus signal transceiving module to the circuit board after impedance matching, and connecting the signals output by the alternating current/direct current power supply module, the analog signal output module, the digital signal output module and the rotary transformer output module and the clock module to the circuit board; the load unit provides load for the output of the circuit board to be tested and connects the load output signal to the switch module.
3. The automatic testing device for the single plate of the three-floating inertial platform according to claim 2, characterized in that: and each circuit board to be tested is provided with a corresponding adapter for signal transfer.
4. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1 or 2, characterized in that: f is an excitation signal of 2kHz/4V or 4kHz/5.5V, and sine and cosine signals output by the rotary transformer output module are F sin sigma and F cos sigma respectively.
5. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1 or 2, characterized in that: the system also comprises a human-computer interaction module used for the tester to select the test items and read the test results and the test data.
6. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1 or 2, characterized in that: the test items comprise digital parallel bus test, the main control module selects the analog signal output module to output a constant voltage or constant current signal according to the excitation type required by the circuit board to be tested, or the rotary transformer outputs sine and cosine signals as excitation signals to be output to the circuit board to be tested, and the clock module is output to the circuit board to be tested; the circuit board to be tested converts the excitation signal into a digital signal by using a clock signal as a frequency scale, the digital signal is output through a digital parallel bus of the bus signal transceiving module, the main control module controls the bus signal transceiving module to receive the signal output by the digital parallel bus through reading operation, and judges whether the signal is consistent with the output which should be obtained by the excitation signal or not and judges whether the output function of the digital parallel bus is qualified or not.
7. The automatic testing device for a three-floating inertial platform single plate according to claim 6, wherein the digital parallel bus test further comprises: the main control module controls the bus signal transceiving module to send a test instruction to a circuit board to be tested through a bus, the circuit board to be tested receives the test instruction and then converts the test instruction into current, voltage or PWM (pulse width modulation) wave to be output, the main control module judges the type and the qualified range of the signal output by the circuit board to be tested according to the sent test instruction, if the output is the current, the current measuring unit is controlled to collect the current, if the output is the voltage, the voltage measuring unit is controlled to collect the voltage, if the output is the PWM wave, the oscilloscope collects the waveform and the duty ratio of the PWM wave, and after the main control module receives the collected signal, whether the signal is in the qualified range is.
8. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1 or 2, characterized in that: the test items comprise digital serial bus test, the main control module controls the analog signal output module to output constant voltage to the circuit board to be tested, the circuit board to be tested converts the voltage signal into digital quantity and then stores the digital quantity, the bus signal receiving and transmitting module is controlled to perform handshake with the circuit board to be tested by using the serial bus and read the digital quantity, and the main control module judges whether the digital quantity is correct and judges whether the receiving and transmitting function of the digital serial bus is qualified.
9. The automated testing device for a three-floating inertial platform single plate according to claim 8, wherein the digital serial bus test further comprises: the main control module controls the digital signal output module to output digital I/O signals to enable the power level of the circuit board to be tested to output, the main control module controls the bus signal transceiving module to send control instructions to the circuit board to be tested by using the serial bus, the circuit board to be tested outputs PWM waves after performing digital-to-analog conversion and power amplification, the oscilloscope collects the waveforms and duty ratios of the PWM waves, and the main control module judges whether the waveforms and duty ratios of the collected PWM waves are in a qualified range and judges whether the digital serial bus sending function is qualified or not after receiving the waveforms and duty ratios of the collected PWM waves.
10. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1 or 2, characterized in that: the test items comprise a frequency signal output test, the main control module controls the alternating current-direct current power supply to output a direct current power supply to the circuit board to be tested to supply power for the frequency standard circuit, the frequency acquisition unit is controlled to acquire frequency signals output by the frequency standard circuit and send the frequency signals to the main control module, and the main control module judges whether the frequency signals are in a qualified range or not after receiving the frequency signals and judges whether the time frequency signal output function is qualified or not.
11. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1 or 2, characterized in that: the test items comprise a control loop dynamic characteristic test, the main control module controls the analog signal output module to output a sinusoidal signal to a control loop of the circuit board to be tested as an excitation to control the alternating current-direct current power supply to output a direct current power supply to the circuit board to be tested to supply power to the control loop, the frequency response analyzer collects the sinusoidal signal output by the analog signal output module and a response signal output by the control loop to perform frequency response analysis, an analysis result is sent to the main control module, and after the main control module receives the analysis result, whether the analysis result is in a qualified range is judged, and whether the control loop dynamic characteristic is qualified is judged.
12. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1 or 2, characterized in that: the automatic testing device further comprises a self-checking adapter, and the automatic testing device carries out self-checking before testing is started.
13. The automatic testing device for the single plate of the three-floating inertial platform according to claim 12, wherein the self-checking process is as follows: the main control module controls the AC/DC power supply module to output an AC or DC power supply to the self-checking adapter, the self-checking adapter connects the AC/DC power supply output by the AC/DC power supply module to the voltage measuring unit through the switch module, and the main control module judges whether the voltage acquired by the voltage measuring unit is consistent with the theoretical output voltage and whether the functions of the AC/DC power supply module, the switch module and the voltage measuring unit are normal or not;
the main control module controls the analog signal output module to output constant voltage with adjustable amplitude, and the self-checking adapter connects the constant voltage to the voltage measuring unit through the switch module; the main control module controls the analog signal output module to output a constant current signal with adjustable amplitude, and the self-checking adapter connects the constant voltage to the current measuring unit through the switch module; the main control module controls the analog signal output module to output an amplitude-frequency-adjustable sinusoidal signal to the self-checking adapter, the self-checking adapter connects the sinusoidal signal to the frequency acquisition unit through the switch module to acquire signal amplitude frequency and oscilloscope acquisition waveform, the main control module judges whether the signal amplitude frequency acquired by the frequency acquisition unit and the oscilloscope acquisition waveform are consistent with a theoretical value, and judges whether the functions of the analog signal output module, the switch module, the current measurement unit, the frequency acquisition unit and the oscilloscope are normal;
the main control module controls the digital signal output module to output a digital I/O signal to the self-checking adapter, the self-checking adapter connects the digital I/O signal to the voltage measuring unit through the switch module, and the main control module judges whether the voltage acquired by the voltage measuring unit is consistent with the theoretical output voltage and whether the functions of the digital signal output module, the switch module and the voltage measuring unit are normal or not;
the main control module controls the clock module to output a clock signal to the self-checking adapter, and the self-checking adapter connects the clock signal to the frequency acquisition unit through the switch module; the main control module judges whether the frequency of the clock signal acquired by the frequency acquisition unit is consistent with a theoretical value or not, and judges whether the functions of the clock module and the frequency acquisition unit are normal or not.
14. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1 or 2, characterized in that: the single board automatic testing device integrates other modules except the adapter into a testing host (1), and a tested circuit board (3) is inserted into the adapter (2); the adapter (2) is connected to the test host (1) through the pluggable interface (4) and is locked through the pull-in locking device (5).
15. The automatic testing device for the single plate of the three-floating inertial platform according to claim 1 or 2, characterized in that: and if the main control module judges that the test result is unqualified, outputting an alarm prompt.
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