CN107229270B - Power control box Auto-Test System - Google Patents
Power control box Auto-Test System Download PDFInfo
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- CN107229270B CN107229270B CN201710407171.XA CN201710407171A CN107229270B CN 107229270 B CN107229270 B CN 107229270B CN 201710407171 A CN201710407171 A CN 201710407171A CN 107229270 B CN107229270 B CN 107229270B
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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
- 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
- G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
- G05B23/0221—Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
The invention discloses a kind of power control box Auto-Test Systems, including programmable AC power supply, data acquisition processing device and host computer, data acquisition processing device includes: input signal management module, output signal management module, fault diagnosis processing module, DSP module and FPGA module, input signal management module respectively with DSP module, FPGA module is connected, output signal management module respectively with DSP module, FPGA module is connected, fault diagnosis processing module is connect with DSP module, DSP module is connected with FPGA module, DSP module also respectively with host computer, programmable AC power supply connection, DSP module sends instructions to programmable AC power supply to control the electric parameter of programmable AC power supply, by treated, data are sent to host computer and are shown by host computer DSP module.The blank for having filled up certain type Generation Control box automatic test technology of the invention, is able to satisfy data acquisition process demand.
Description
Technical field
The present invention relates to plane attachment field of automatic testing, particularly, are related to a kind of power control box Auto-Test System.
Background technique
Power-supply system in aircraft is generally made of alternating current generator, power control box and current transformer, effect be to
Airborne equipment power supply, power control box therein is the core component of system, the power supply shape of equipment directly on decision aircraft
State is the important leverage that can electrical equipment work normally.Currently, the detection method to power control box passes through the dedicated examination of construction
It tests platform, using entity alternating current generator and current transformer cooperation test, cannot achieve the automatic test of AC power source control box.
Summary of the invention
The present invention provides a kind of power control box Auto-Test Systems, cannot achieve AC power source to solve the prior art
The technical issues of controlling the automatic detection of box.
The technical solution adopted by the invention is as follows:
A kind of power control box Auto-Test System, including programmable AC power supply, data acquisition processing device and host computer,
Data acquisition processing device is connect with programmable AC power supply and host computer respectively, and data acquisition processing device includes: input signal
Management module, for obtaining input signal and carrying out physical quantity conversion and signal filtering to input signal；Output signal manages mould
Block is used for management export signal；Fault diagnosis processing module, for input signal, output signal and device internal circuit
Carry out fault detection and processing；DSP module, for controlling the electric parameter of programmable AC power supply；FPGA module, for acquiring warp
Input signal management module treated input signal simultaneously carries out that duty ratio measuring, the time calculates and logical process；Input signal
Input signal after management module is connected with DSP module, FPGA module respectively and will be processed inputs DSP module, FPGA respectively
Module；Output signal management module is connected with DSP module, FPGA module respectively and manages the output of DSP module and FPGA module
Signal；Fault diagnosis processing module is connect with DSP module；DSP module is connected with FPGA module and realizes data interaction；DSP mould
Block is also connect with host computer, programmable AC power supply respectively, and DSP module sends instructions to programmable AC power supply to control program-controlled friendship
The electric parameter in galvanic electricity source, by treated, data are sent to host computer and are shown by host computer DSP module.
Further, input signal includes analog quantity, frequency quantity and switching value, the physics that input signal management module carries out
Amount conversion includes: the meaning transformation that switch amount carries out low and high level, and saves and be shown to corresponding module；Analog quantity is carried out
Analog-to-digital conversion, magnitude calculation and dimension conversion；Magnitude calculation and dimension conversion are carried out to frequency quantity；Input signal management module into
Capable signal filtering includes: that switch amount carries out multi collect；First-order filtering is carried out to the magnitude of analog quantity and segmentation calculates；It is right
The magnitude of frequency quantity carries out first-order filtering and segmentation calculates.
Further, DSP module is for reading in through input signal management module treated analog quantity, frequency quantity and switch
Amount exports switching value and analog quantity after being handled；FPGA module for read in through input signal management module treated frequency
Rate amount and switching value export switching value after being handled.Output signal management module includes: to output to the management of output signal
Switching value according to physical significance carry out level output；Digital-to-analogue conversion and magnitude calculation are carried out to the analog quantity of output；To output
Frequency quantity carry out the configurations of duty when frequency values.
Further, input signal management module include for acquire relay output voltage, control box start end voltage,
The A/D acquisition module of electrical source consumption electric current and energized circuit consumption electric current, A/D acquisition module pass through spi bus phase with DSP module
Even.Conditioning circuit module and isolation circuit module is also respectively connected in the front end of A/D acquisition module and the front end of FPGA module.
Further, data acquisition processing device further includes the power module connecting with DSP module and FPGA module, electricity
Source module includes current detection circuit and voltage monitoring circuit.
Further, extension has memory module outside DSP module and FPGA module.DSP module include initialization module,
Host computer communication serial ports for receiving the test mode command of host computer transmission interrupts service module, for testing logic control
The Interruption service module and programmable AC power supply control module of system.
Further, DSP module is connect by RS485 communication module with programmable AC power supply, and DSP module passes through RS422
Communication module is connect with host computer.
The present invention by data acquisition processing device complete to the control of programmable AC power supply, data acquisition, signal processing,
The duty ratio measuring of excitation signal, time calculate and the functions such as test logic control, and will acquisition and measurement by means of communication
Result pass to host computer, test process parameter and test result are shown with good graphic interface by host computer.The present invention
The design of power control box Auto-Test System filled up the blank of certain type Generation Control box automatic test technology, be able to satisfy number
According to acquisition process demand, promoted with certain engineering, application value.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to accompanying drawings, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of power control box Auto-Test System of the invention；
Fig. 2 is the hardware block diagram of the power control box Auto-Test System of the preferred embodiment of the present invention；
Fig. 3 is DSP core control chip operation flow chart；
Fig. 4 is the flow chart of FPGA data write-in SDRAM；
Fig. 5 is the flow chart that FPGA reads SDRAM data.
Drawing reference numeral explanation:
1, programmable AC power supply；2, data acquisition processing device；21, input signal management module；22, output signal management
Module；23, fault diagnosis processing module；24, DSP module；25, FPGA module；26, RS485 communication module；27, RS422 is communicated
Module；3, host computer.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig.1, the preferred embodiment of the present invention provides a kind of power control box Auto-Test System, including program-controlled friendship
Galvanic electricity source 1, data acquisition processing device 2 and host computer 3, data acquisition processing device 2 respectively with programmable AC power supply 1 and upper
Machine 3 connects.The present invention acquires, at signal the control of programmable AC power supply 1, data by the completion of data acquisition processing device 2
Reason, the duty ratio measuring of excitation signal, the time calculates and the functions such as test logic control, and will be acquired by serial communication means
Host computer 3 is passed to the result of measurement, shows that test process parameter and test are tied by host computer 3 with good graphic interface
Fruit.
Data acquisition processing device 2 is the core component that whole system is tested comprising: input signal management module
21, output signal management module 22, fault diagnosis processing module 23, DSP module 24 and FPGA module 25.DSP module 24 with
FPGA module 25 is connected and realizes data interaction, input signal management module 21 respectively with DSP module 24 and FPGA module 25
Be connected and input signal read in DSP module 24 and FPGA module 25 respectively, output signal management module 22 respectively with DSP module
24 and FPGA module 25 be connected and manage the output signal of DSP module 24 Yu FPGA module 25, fault diagnosis processing module 23
It is connect with DSP module 24, DSP module 24 is also connect with host computer 3 and programmable AC power supply 1 respectively.
Input signal management module 21 of the invention is for obtaining input signal and carrying out physical quantity conversion to input signal
It is filtered with signal.Input signal includes analog quantity, frequency quantity and switching value.Input signal management module 21 carries out input signal
Physical quantity conversion, comprising: switch amount carries out the meaning transformation of low and high level, and saves and be shown to corresponding module；To simulation
Amount input carries out analog-to-digital conversion, magnitude calculation and dimension conversion；Frequency quantity is inputted and carries out magnitude calculation and dimension conversion.Signal
Filtering processing includes: that switch amount input carries out multi collect to prevent from malfunctioning；Single order is carried out to the magnitude of analog input
Filtering and segmentation calculate, and guarantee that value is accurate, reliable；First-order filtering is carried out to the magnitude of frequency quantity input and segmentation calculates, is protected
It is accurate, reliable to demonstrate,prove value.
Input signal management module 21 is connected with DSP module 24 and FPGA module 25 respectively, and will turn by physical quantity
Change with the filtered analog quantity of signal, frequency quantity and On-off signal DSP module 24, will by physical quantity conversion and signal filtering
Frequency quantity and On-off signal FPGA module 25 afterwards.
Referring to Fig. 2, it is divided into multiple regions on data acquisition processing device pcb board, including embeded processor area (DSP,
FLASH, SRAM, FPGA, SDRAM), power supply area (including current sampling and signal behavior area), self-test signal selection area (self-test electricity
Road), analog signal isolating area, digital signal isolated area, the acquisition zone A/D, isolated serial port area (RS422, RS485) and relay drive
Dynamic area, region in addition are relay switch combination region and interface area.
Input signal management module 21 specifically includes A/D acquisition module, and A/D acquisition module is for acquiring relay output electricity
Pressure, control box start end voltage, electrical source consumption electric current and energized circuit consume electric current, and A/D acquisition module passes through with DSP module 24
Spi bus is connected.The front end of A/D acquisition module is also connected with conditioning circuit module and isolation circuit module, for believing tested
Number it is isolated with Acquisition Circuit, to protect the hardware circuit of weak current part.
In this preferred embodiment, A/D acquisition module uses AD7714 chip ,+3V or+5V supply voltage (selection here+
5V), 24,5 channel sampling precision.AD7714 chip is suitable for the embedded system based on microcontroller or DSP, its string
Line interface can carry out 3 line SPI communication datas and be transmitted to DSP module 24, gain, pickup electrode can be arranged with software by spi bus
Property and channel selecting.Analog signals pass through low-pass filtering, in-phase proportion amplifying circuit, are acquired by AD7714 chip, in DSP mould
It is filtered, reads, handles in block 24.
Output signal management module 22, for according to management of calculated results output signal.Output signal management module 22 is divided
It is not connected with DSP module 24 and FPGA module 25, and manages switching value and analog quantity and FPGA that DSP module 24 exports
The switching value that module 25 exports.Specifically, the switching value of output is carried out electricity according to physical significance by output signal management module 22
Flat output；Digital-to-analogue conversion and magnitude calculation are carried out to the analog quantity of output；Duty when frequency values are carried out to the frequency quantity of output
Configuration.
Fault diagnosis processing module 23 is right for carrying out Effective judgement, fault detection, troubleshooting to input signal
Device internal circuit such as self-checking circuit carries out self-test, troubleshooting, carries out fault detection, troubleshooting to output signal
(survey according to output signal and compare).Fault diagnosis processing module 23 connect with DSP module 24 and realizes the friendship of switching value
Mutually.
DSP module 24 is used to send instructions to frequency and electricity of the programmable AC power supply 1 to control programmable AC power supply 1
Pressure.It wherein, include: initialization module, host computer communication serial ports interruption service module, Interruption service in DSP module 24
Module and programmable AC power supply control module.Initialization module initializes (DSP core for the initialization of DSP peripheral hardware, interrupt vector
Initialization, SCI, SPI, timer, GPIO, capture-port initialization), host computer communication serial ports interrupts service module for connecing
The test mode command that host computer 3 is sent is received, Interruption service module is for testing logic control, programmable AC power supply control
Module controls the output of programmable AC power supply 1 according to control model.
It further include the operational administrative module being managed for the hardware to data acquisition processing device 2 in DSP module 24
(OM), it including to hardware such as DSP, FPGA, A/D, D/A, DI, DO, SDRAM, buses is managed, connecing for hardware and software is provided
Mouthful.
DSP module 24 and FPGA module 25 interconnect by data/address bus, address bus, control bus and realize digital quantity
Interaction, and connect by RS485 communication module 26 with programmable AC power supply 1, connected by RS422 communication module 27 and host computer 3
It connects.Also extension has memory module, including FLASH memory and SRAM memory outside DSP module 24.
The selection TMS320F2812 chip of DSP module 24 of this preferred embodiment, 32 fixed point high speed numerical processors, most
High working frequency 150MHz.The achievable low-speed DAQ of TMS320F2812 chip, number I/O control output and a variety of serial
The basic function of the data acquisition processing devices 2 such as communication.TMS320F2812 chip exterior extends 512K*16 FLASH storages
Device, model SST39VF800 facilitate the larger program of user's programming；TMS320F2812 chip exterior also extends 256K*16
SRAM memory, model IS61LV25616, temporal data when program being facilitated to run.The data of TMS320F2812 chip are total
All functional pins such as line, address bus, control bus, A/D, EVA, EVB, PWM are drawn, the contact pin interface of 4 32 needles, pin
Spacing 2.54mm can extend use.
In view of measuring every defencive function delay time of power control box, need to jump between in two digital levels
It is inserted into high frequency clock, come time of measuring in such a way that processor counts.Pulse width measuring is also such.Since the time surveys
Amount, pulse width measuring need chip to have the functions such as parallel, clock signal triggering, are individually difficult to realize using DSP module 24,
The present invention is measured by FPGA module 25.
FPGA module 25 of the invention is used for frequency acquisition amount and guard time, and carries out the survey of excitation signal duty ratio
Amount, the time calculates and logical process.FPGA module 25 is completed and DSP module 24 by data/address bus, address bus, control bus
Interconnect and realize the interaction of digital quantity.In this preferred embodiment, the front end of FPGA module 25 is also connected with conditioning circuit, isolation
Circuit module.Extension has SDRAM memory outside FPGA module 25, and FPGA module 25 carries out reading and writing data to SDRAM memory.
The FPGA module 25 of this preferred embodiment realized using forth generation Cyclone EP4CE10F17C8N chip, with
This counting as system, timing device.EP4CE10F17C8N chip extends out pin up to 105, arranges needle using standard 2.54mm
It draws, test, test, extension is facilitated to use.The extension SDRAM memory model of EP4CE10F17C8N chip
HY57V641620HT, capacity are that 1M × 4BANKS × 16bit=8M Byte data width is 16bit.The SDRAMSDRAM is real
Existing FPGA data read-write, extends memory.
The dsp chip and fpga chip of this preferred embodiment have been all made of source crystal oscillator, guarantee reliable operation.
Data acquisition processing device 2 of the invention further includes the power supply mould connecting with DSP module 24 and FPGA module 25
Block, power module include current detection circuit and voltage monitoring circuit, can real-time detection circuit plate electric current, power module output
Various voltage values.
Power supply is introduced to power module by the external dc regulated power supply of+28V, exports several different supply voltage+5V,
+ 15V, -15V ,+24V are to subsequent conditioning circuit.Input of+the 15V as external A/D acquisition module benchmark+5V power supply chip.+ 15V ,-
15V provides working power for conditioning circuit, and+24V provides working power for relay coil.
Digital voltage output is+3.3V, turns the high-performance of+3.3V as+5V using AMS1117-3.3 power conversion chip
Voltage stabilizing chip is the power supply of the chips such as DSP/FPGA/SDRAM.AMS1117 family chip fan-out capability is 0.8A, is greater than required electricity
Stream.3.3V is to provide DSP analog voltage benchmark simultaneously, and ADC input range is 0.0V~3.0V inside DSP.
FPGA kernel use+1.2V power supply, electric current needed for being greater than system.Contain a large amount of analog circuits inside FPGA PLL,
In order to guarantee the performance of PLL, provided using LDO (i.e. Low Dropout Regulator, low pressure difference linear voltage regulator) for PLL
Analog power, the output of this supply voltage are+2.5V.AMS1117-1.8 power conversion chip offer+1.8V is used to DSP core.
Such as Fig. 3, DSP core control chip operation process approximately as:
Electrifying startup DSP；
(DSP core initialization, SCI, SPI, timer, GPIO capture end for the initialization of DSP peripheral hardware, interrupt vector initialization
Mouth initialization)；
SDRAM memory status checkout, judge SDRAM memory whether thermal starting, if so, into primitive recursive function,
Otherwise it successively carries out load FLASH parameter and variable assigns initial value, enabled input self-test signal, carries out input signal self-test, prohibits
With input self-test signal, primitive recursive function is eventually entered into；
Into the process after primitive recursive function are as follows: loop to determine whether T1ms delay has arrived, if so, progress switching value,
Host computer 3 communicates input and output；
Data interaction is carried out with fpga chip；
Analog quantity SPI communication is carried out with A/D chip；
Memory handles (including FLASH, SDRAM etc.)；
It is logical in real time with host computer 3 and programmable AC power supply 1 respectively by RS422 communication module 27, RS485 communication module 26
News；
Operating statistic (each funcall cycle T Nms)；
Power-off, primitive recursive function are jumped out, EP (end of program).
SDRAM process is written for FPGA data as shown in figure 4, FPGA reading SDRAM data flow is as shown in Figure 5.
Power control box Auto-Test System of the present invention can carry out the place of low speed signal by data acquisition processing device 2
Manage acquisition, the control of programmable AC power supply 1, guard time measurement, duty ratio measuring etc., time resolution, data acquisition essence
The test logic control of degree, duty ratio measuring precision and system.The design of power control box Auto-Test System of the invention is filled out
The blank for having mended certain type Generation Control box automatic test technology, is able to satisfy data acquisition process demand, and there is certain engineering to push away
Extensively, application value.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of power control box Auto-Test System, which is characterized in that including programmable AC power supply (1), data acquisition process
Device (2) and host computer (3), the data acquisition processing device (2) respectively with the programmable AC power supply (1) and described upper
Machine (3) connection, the data acquisition processing device (2) include:
Input signal management module (21), for obtaining input signal and carrying out physical quantity conversion and signal filter to input signal
Wave, input signal include analog quantity, frequency quantity and switching value；
Output signal management module (22) is used for management export signal；
Fault diagnosis processing module (23), for carrying out fault detection to input signal, output signal and device internal circuit
And processing；
DSP module (24), for controlling the electric parameter of the programmable AC power supply (1)；
FPGA module (25) is gone forward side by side for acquiring through the input signal management module (21) treated frequency quantity and switching value
Row duty ratio measuring, defencive function delay time calculates and logical process；
The input signal management module (21) is connected with the DSP module (24), the FPGA module (25) respectively and will place
Input signal after reason inputs the DSP module (24), the FPGA module (25) respectively；The output signal management module
(22) it is connected respectively with the DSP module (24), the FPGA module (25) and manages the DSP module (24) and the FPGA
The output signal of module (25)；The fault diagnosis processing module (23) connect with the DSP module (24)；The DSP module
(24) it is connected with the FPGA module (25) and realizes data interaction；The DSP module (24) also respectively with the host computer
(3), the programmable AC power supply (1) connection, the DSP module (24) send instructions to the programmable AC power supply (1) to
The electric parameter of programmable AC power supply (1) is controlled, data are sent to host computer and by upper to the DSP module (24) by treated
Position machine (3) is shown.
2. power control box Auto-Test System according to claim 1, which is characterized in that
The physical quantity conversion that the input signal management module (21) carries out includes: the meaning turn that switch amount carries out low and high level
It changes,
And save and be shown to corresponding module；Analog-to-digital conversion, magnitude calculation and dimension conversion are carried out to analog quantity；To frequency quantity into
Row magnitude calculation and dimension conversion；
The signal filtering that the input signal management module (21) carries out includes: that switch amount carries out multi collect；To analog quantity
Magnitude carry out first-order filtering and segmentation calculate；First-order filtering is carried out to the magnitude of frequency quantity and segmentation calculates.
3. power control box Auto-Test System according to claim 2, which is characterized in that the DSP module (24) is used
In reading in through the input signal management module (21) treated analog quantity, frequency quantity and switching value, exported after being handled
Switching value and analog quantity；The FPGA module (25) is for reading in through the input signal management module (21) treated frequency
Amount and switching value, export switching value after being handled.
4. power control box Auto-Test System according to claim 3, which is characterized in that the output signal manages mould
Block (22) includes: to carry out level output according to physical significance to the switching value of output to the management of output signal；To the mould of output
Analog quantity carries out digital-to-analogue conversion and magnitude calculation；The configuration of duty when frequency values is carried out to the frequency quantity of output.
5. power control box Auto-Test System according to claim 1, which is characterized in that the input signal manages mould
Block (21) includes for acquiring relay output voltage, control box start end voltage, electrical source consumption electric current and energized circuit consumption
The A/D acquisition module of electric current, the A/D acquisition module are connected with the DSP module (24) by spi bus.
6. power control box Auto-Test System according to claim 5, which is characterized in that the A/D acquisition module
Conditioning circuit module and isolation circuit module is also respectively connected in front end and the front end of the FPGA module (25).
7. power control box Auto-Test System according to claim 1, which is characterized in that the data acquisition process dress
Setting (2) further includes the power module connecting with the DSP module (24) and the FPGA module (25), the power module packet
Include current detection circuit and voltage monitoring circuit.
8. power control box Auto-Test System according to claim 1, which is characterized in that the DSP module (24) and
The external extension of the FPGA module (25) has memory module.
9. power control box Auto-Test System according to claim 1, which is characterized in that DSP module (24) packet
Include initialization module, the host computer communication serial ports for receiving the test mode command that host computer (3) are sent interrupts service mould
Block, the Interruption service module for testing logic control and programmable AC power supply control module.
10. power control box Auto-Test System according to claim 1, which is characterized in that the DSP module (24) is logical
It crosses RS485 communication module (26) to connect with the programmable AC power supply (1), the DSP module (24) passes through RS422 communication module
(27) it is connect with the host computer (3).
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