CN109302247A - A kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data - Google Patents
A kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data Download PDFInfo
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- CN109302247A CN109302247A CN201811203647.9A CN201811203647A CN109302247A CN 109302247 A CN109302247 A CN 109302247A CN 201811203647 A CN201811203647 A CN 201811203647A CN 109302247 A CN109302247 A CN 109302247A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
Abstract
The short-wave receiver machine trouble hunting method based on monitoring and test achievement data that the invention discloses a kind of, according to short-wave receiver machine structure division module to be measured；Mark every test index of short-wave receiver machine；Successively analyze the accident analysis table for establishing each module and test index when performance decline or failure occurs in each module in short-wave receiver machine in turn to the influence of every test index；Summarize the accident analysis table of each module and test index and arrange and obtains overall failure analytical table；Further refinement test index arranges to the impact factor of each module and obtains new overall failure analytical table；Monitor the data of the test index of short-wave receiver machine to be measured, it is matched according to the relationship of each module and test index failure in new overall failure analytical table, and corresponding module is overhauled according to matching result, to realize that machine failure can be found in advance and place under repair in time by not tearing short-wave receiver machine open, discovery failure realizes on-condition maintenance in advance, so that spending, which is greatly lowered, improves defense economy benefit.
Description
Technical field
The invention belongs to short wave communication fields, and in particular to a kind of short-wave receiver machine event based on monitoring and test achievement data
Hinder repair method.
Background technique
Short wave communication is wavelength between 100 meters~10 meters, a kind of radio communication that 3 megahertzs~30 megahertzs of frequency range
Technology.Short-wave receiver machine is used for the equipment for receiving modulated radio wave and being transformed into raw information, usually by input protection electricity
Road, frequency mixer, digital signal processing module, frequency synthesis module and power module composition.
For a long time, people are after relying on built in test, dismantling machine to the fault diagnosis and location of short-wave receiver machine
DATA REASONINGs at different levels, then carry out fault diagnosis by maintenance technician or expert.But due to the short-wave receiver of different times
Machine state of the art differs greatly, and early production is mostly poor without fault self-checking ability or self-test capability, though newest product
Have self-test capability, but be only limitted to loss of functionality class failure detection judgement, and for the failure of reduced performance class still without
Method detection and judgement, are unable to satisfy the high-precision requirement to short-wave receiver machine working service and breakdown maintenance.
The current country of fault detection technique and equipment to short-wave receiver machine has some research achievements, but to not needing to tear open
Open short-wave receiver machine, and only rely on outside port measurement performance indicator data can trouble unit to short-wave receiver machine into
The method of row maintenance still belongs to blank.Currently, general processing mode is that the failure of short-wave receiver machine just will do it repairing, more
Serious even result in after short-wave receiver machine breaks down can not repair, and can not find that failure realizes on-condition maintenance in advance, thus
Cause the maintenance time of maintenance technician too long, excessive influence defense economy benefit of paying wages.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides one kind to be based on monitoring and test achievement data
Short-wave receiver machine trouble hunting method, there is performance decline by each module in analysis short-wave receiver machine or when failure pair
The accident analysis table of each module and test index is established in the influence of every test index, summarizes the failure of each module and test index
Analytical table and arrange obtain overall failure analytical table, according to the relationship of each module and test index failure in overall failure analytical table
Matched, and corresponding module overhauled according to matching result, with realize do not tear open short-wave receiver machine can find in advance it is whole
Machine failure simultaneously places under repair in time, finds that failure realizes on-condition maintenance in advance, so that spending, which is greatly lowered, improves defense economy
Benefit.
To achieve the above object, according to one aspect of the present invention, it provides a kind of based on monitoring and test achievement data
Short-wave receiver machine trouble hunting method, specifically:
S1. multiple modules are divided into according to short-wave receiver machine structure to be measured；
S2. it successively analyzes each module in short-wave receiver machine and performance decline occurs or when failure to the shadow of every test index
It rings, and is classified as multiple grades according to influence degree, the accident analysis table of each module and test index is established with this；
S3. impact factor of the refinement test index to each module, the overall failure analytical table refined；
S4. the data of the test index of short-wave receiver machine to be measured are monitored, and according to each in the overall failure analytical table of refinement
The relationship of module and test index is matched, and maintenance situation is determined according to matching result, for carrying out to corresponding module
Maintenance can find in advance machine failure and place under repair in time to realize and not tear short-wave receiver machine open.
As a further improvement of the present invention, test index is further refined in step S3 to the impact factor of each module
Specifically: for the module that a certain test index impact factor is greatest level,
If other modules to the impact factor of this test index be not the number of minimum level less than the first preset value when,
The then module of the module to be to the impact factor of this test index be the first estate；
If other modules to the impact factor of this test index be not minimum level number it is big less than the second preset value
When the first preset value, then the module of the module to be to the impact factor of this test index be the second grade；
If other modules are greater than the second preset value to the number that the impact factor of this test index is not minimum level,
The then module of the module to be to the impact factor of this test index the be tertiary gradient.
As a further improvement of the present invention, multiple modules include input protection circuit module u in step S11, frequency mixer
Module u2, digital signal processor module u3, frequency synthesis module u4With power module u5。
As a further improvement of the present invention, input protection circuit module u1Including low-pass filter and antenna attenuator,
The performance decline of low-pass filter is at least one of excessively high, too low and unstable including cutoff frequency, the performance of antenna attenuator
Decline is at least one of excessive, too small and unstable including decay power.
As a further improvement of the present invention, mixer module u2Performance decline include acoustic frequency response be deteriorated, intermediate frequency choosing
Selecting property be deteriorated, total distortion factor can be deteriorated, in-band intermodulation be deteriorated, sideband harass, with outer intermodulation variation, intermediate frequency rejection ratio be deteriorated,
Image-frequency rejection ratio variation, the decline of Clogging indicator variation, reciprocal mixing, reference sensitivity, Signal-to-Noise is deteriorated and automatic gain
At least one of control characteristic variation.
As a further improvement of the present invention, digital signal processor module u3Including audio-frequency amplifier, audio-frequency amplifier
Performance decline include that intermodulation or intermodulation, gain are generated between amplified signal is at least one of too small.
As a further improvement of the present invention, frequency synthesis module u4Including voltage controlled oscillator and mark frequency module, voltage-controlled vibration
The performance decline for swinging device include that centre frequency is unstable, centre frequency tuning range is too small and tuning gain it is too small at least one
Kind.
As a further improvement of the present invention, the every test index for short-wave receiver machine being marked in step S1 includes: frequency
Accuracy v1, reference sensitivity v2, big Signal-to-Noise v3, acoustic frequency response v4, intermediate frequency selectivity v5, total distortion factor v6, sideband
Linear crosstalk v7, sideband nonlinear crosstalk v8, in-band intermodulation v9, with outer intermodulation v10, closing signal selectivity v11, obstruction v12, fall
Easily mixing v13, intermediate frequency rejection ratio v14, image-frequency rejection ratio v15With automatic gaincontrol characteristic v16At least one of.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, have below beneficial to effect
Fruit:
1. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data of the invention, passes through analysis
Each module and test are established in influence when performance decline or failure occurs in each module in short-wave receiver machine to every test index
The accident analysis table of index, summarizes the accident analysis table of each module and test index and arrangement obtains overall failure analytical table, presses
It is matched according to the relationship of each module and test index failure in overall failure analytical table, and according to matching result to corresponding mould
Block is overhauled, to realize that machine failure can be found in advance and place under repair in time by not tearing short-wave receiver machine open, find failure in advance
On-condition maintenance is realized, so that spending, which is greatly lowered, improves defense economy benefit.
2. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data of the invention, due to the invention
Do not need to dismantle short-wave receiver machine just and can be carried out accident analysis maintenance, only rely on the performance indicator data of outside port measurement without
Need to dismantle short-wave receiver machine be just able to carry out fault condition maintenance, receiver itself is not caused it is any damage or influence, and
It is quick and convenient to operate very simple, and accuracy rate with higher, it is maintenance skill that important references can be provided for maintenance technician
Art personnel save a large amount of time, increase substantially judging efficiency.
3. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data of the invention, further carefully
Change test index to the impact factor of each module, arrangement obtains new overall failure analytical table, is carrying out short-wave receiver machine health
When state and performance availability etc. are assessed, detailed measurement is carried out by performance indexes of the instrument and meter to short-wave receiver machine
It calculates, if it find that, according to component relationship inside short-wave receiver machine, being analyzed there are unqualified or close to underproof index item
There may be the units that performance declines for maintenance, find failure in advance to further realize.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the short-wave receiver machine of the embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Constituting conflict can be combined with each other.The present invention is described in more detail With reference to embodiment.
A kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data, specifically:
S1. input protection circuit module u is divided into according to short-wave receiver machine structure1, mixer module u2, number letter
Number processor module u3, frequency synthesis module u4With power module u5；Mark every test index of short-wave receiver machine；Specifically:
Fig. 1 is the structural schematic diagram of the short-wave receiver machine of the embodiment of the present invention.As shown in Figure 1, short-wave receiver machine includes defeated
Enter to protect circuit module u1, mixer module u2, digital signal processor module u3, frequency synthesis module u4With power module u5。
The test index of short-wave receiver machine has: frequency accuracy v1, reference sensitivity v2, big Signal-to-Noise v3, acoustic frequency response v4, in
Frequency selectivity v5, total distortion factor v6, sideband linear crosstalk v7, sideband nonlinear crosstalk v8, in-band intermodulation v9, with outer intermodulation v10、
Closing signal selectivity v11, obstruction v12, reciprocal mixing v13, intermediate frequency rejection ratio v14, image-frequency rejection ratio v15And automatic growth control
Characteristic v16。
S2. it successively analyzes each module in short-wave receiver machine and performance decline occurs or when failure to the shadow of every test index
It rings, and above-mentioned influence occurs according to the module composition figure of each unit in short-wave receiver machine and the principle composition block diagram analysis of complete machine
Influence of the module to test index；And 3 grades are classified as according to effect of each module to every test index, point
Not Yong " N ", " S " and " M " indicate that " N " representative has little effect, " S " representative have it is certain influence but influence smaller, " M " is represented
There is larger impact；The accident analysis table of each module and test index is established with this.Specifically:
(1) test index and input protection circuit module u1Relationship analysis table
Input protection circuit module u1Including low-pass filter, antenna attenuator and corresponding detection, control circuit.
In low-pass filter part, the case where being mainly the following failure or performance change.
1. cutoff frequency is got higher: when individual component damage causes cutoff frequency to get higher, filter will be unable to filter out originally
In the signal for filtering out the larger frequency in range, causes the garbage signal into receiver to increase, Clogging indicator is made to be deteriorated；Cut-off
After frequency is got higher, filter characteristic will be lifted integrally, and intermediate frequency rejection ratio and image-frequency rejection ratio can also be deteriorated therewith.
2. cutoff frequency is lower: when cutoff frequency is lower, useful signal high band will be attenuated, front end it is sensitive
Degree is deteriorated；When measuring big Signal-to-Noise, big signal more great talent is needed to be able to satisfy set standard, so, cutoff frequency
It is lower smaller to big Signal-to-Noise.
3. cutoff frequency is unstable: when filter element is there are when rosin joint or poor contact, may cause cut-off
Frequency is unstable, and both the above situation will appear, and causes its reference sensitivity, obstruction, intermediate frequency rejection ratio, image-frequency rejection ratio all
It is possible that being deteriorated, big Signal-to-Noise may also need bigger big signal.But for modern crafts, there is rosin joint or contact
A possibility that situations such as bad, is very little, can be ignored substantially, includes the case where that subsequent each module is also such.
In antenna attenuator part, it is mainly the following the case where performance declines:
1. decay power is excessive: decay power is excessive, can directly result in signal output and become smaller, the reference sensitivity of receiver
Decline；When measuring big Signal-to-Noise, the big signal more great talent needed is able to satisfy set standard.
2. decay power is too small: decay power is too small, will lead to the decaying with output signal, the increase of noise sharply,
Clogging indicator is deteriorated；When output signal frequency is close to IF frequency, intermediate frequency rejection ratio can be deteriorated therewith；Work as output signal frequency
When close to image frequency frequency, image-frequency rejection ratio can also be deteriorated therewith.
3. decay power is unstable: when decay power is unstable, both the above situation will appear, so its benchmark is clever
Sensitivity, obstruction, intermediate frequency rejection ratio, image-frequency rejection ratio are likely to be deteriorated, and big Signal-to-Noise may also need bigger big letter
Number.
Table 1 is the input protection circuit module u of the embodiment of the present invention1Accident analysis table.In summary it analyzes, it can be deduced that
Table 1.
The input protection circuit module u of 1 embodiment of the present invention of table1Accident analysis table
(2) test index and mixer module u2Relationship analysis table
Mixer module u2It is broadly divided into the first frequency mixer u21With second and third frequency mixer u22Two parts, specifically:
1. test index and the first frequency mixer u21Relationship analysis
First frequency mixer u21On one end carry out the radiofrequency signal f of voltage controlled oscillator BLAs local oscillation signal, the other end
It is the aerial signal f being sent by protection circuit, the two is mixed.It is followed by an operational amplifier in the first intermediate frequency, is constituted
AGC thresholding amplifier controls automatic gain amplifier, adjusts the biggish signal after filtering and exports amplitude of variation.
In the first frequency mixer u21Part, since frequency mixer is to realize frequency conversion by non-linear element, and pass through non-linear
The signal of element typically contains many frequency contents, as long as same or similar with IF frequency in the signal of these combination frequencies,
It will be selected together with useful signal, after amplification, conciliation and output, cause cross-talk, uttered long and high-pitched sounds and various interference, can all influence
The normal work of useful linear signal.The interference signal that frequency mixer generates mainly has interference squealing (the group sum of fundamental frequencies of signal and local oscillator
Rate interference), parasitic path interference (interference of the combination frequency of external interference and local oscillator), intermodulation distortion, Intermodulation Interference, obstruction interfere
And reciprocal mixing.Influence situation analysis to performance indicator is specific as follows:
A. acoustic frequency response
When input is amplitude-modulated wave, there is envelope distortion in frequency mixer, will occur new modulation product in the envelope of output, defeated
The size of signal generally can all become different out, it is clear that the ratio between its output level can also change, and acoustic frequency response is caused to be deteriorated.
B. intermediate frequency selectivity
Once there is intermodulation distortion, useful signal and interference signal are reacted on one into frequency mixer, due to frequency mixer
The modulated signal of nonlinear interaction, interference may be modulated on IF carrier, make receiver in selection useful signal and inhibition
The ability decline of adjacent frequency interference, intermediate frequency selectivity are deteriorated.
C. total distortion factor
When there is mixing distortion, the distorted signal for removing fundametal compoment increases, and the definition of total distortion factor is to remove base
The distorted signal virtual value of wave component and the ratio of complete signal virtual value, so total distortion factor can be deteriorated.
D. in-band intermodulation
When receiver receives two signals of modulation simultaneously, once there is interference squealing, receiver non-linear distortion institute
The useless anharmonic wave output component level generated will increase, and lead to direct comparative audio intermodulation, i.e. in-band intermodulation is deteriorated.
E. sideband, which is linearly harassed, sideband is non-linear harasses
For independent-side-band receiver, when generating intermodulation distortion, another side band harasses signal and enters frequency mixer, makes
Variation is linearly harassed at the sideband of receiver；When generating Intermodulation Interference, two are located at equal useless of level in the band of another side
Input signal product is fallen in working edge band, and the sideband of receiver is non-linear to harass variation.
F. with outer intermodulation
Intermodulation Interference refers to two or more interference signals while acting on the input terminal of frequency mixer, two interference signals it
Between generate mixing, the signal of generation close to the frequency of useful signal, enter late-class circuit output together with useful signal and
Generate interference.So, once producing Intermodulation Interference, being centainly deteriorated with outer intermodulation according to the definition with outer intermodulation.
G. intermediate frequency rejection ratio, image-frequency rejection ratio
When receiver generates parasitic path interference, the combination frequency interference of external interference and local oscillator, main point of this kind of interference
It is two kinds: first is that receiving a kind of interference signal close to intermediate frequency once enters frequency mixer, can directly passes through frequency mixer and enter
Intermediate level circuit, and formed and interfered in output end after being amplified, demodulating, cause intermediate frequency rejection ratio to be deteriorated；Second is that Image interference frequency
It is close apart from local frequency, then Image interference can be generated, image-frequency rejection ratio variation is eventually led to.
H. block
When there is obstruction interference, strong signal and useful signal act on frequency mixer simultaneously, and interference signal makes frequency mixer work
Make in serious inelastic region, the useful signal exported at this time reduces therewith, when serious, result even in receiver and completely can not
Receive signal.At this point, Clogging indicator can be deteriorated.
I. reciprocal mixing
It is mixed if it is garbage signal outside receiver band with the noise of local oscillation, swashs the noise for falling into IF passband
Increase, reciprocal mixing will be caused to be deteriorated.
J. reference sensitivity
The gain of amplifier end is too small, and signal output is caused to become smaller, the reference sensitivity decline of receiver.
K. big Signal-to-Noise
The gain of amplifier end is too small, and when measuring big Signal-to-Noise, the audio output of receiver can be reduced accordingly, big to believe
Number signal-to-noise ratio is deteriorated.
L. automatic gaincontrol characteristic
The definition of automatic gaincontrol characteristic is in the work of receiver automatic gain control circuit, and level is with receiver
The level change of input signal.Obviously, if the too small so automatic gaincontrol characteristic of the gain of operational amplifier can also be deteriorated.
2. test index and second and third frequency mixer u22Relationship analysis
From the first frequency mixer u21The first intermediate-freuqncy signal with carry out the radiofrequency signal of voltage controlled oscillator A as local oscillation signal
Enter the second frequency mixer by a series of processing to be mixed.Processed signal is sent to third after amplifier by the signal
Mixing enters third frequency mixer from the oscillator signal of mark frequency unit with as local oscillation signal.The signal is filtered by low-pass filter
Noise wave removing is output a signal in digital signal panel.
In the second frequency mixer and third mixing unit, because it is similar to the mixing unit in the first frequency mixer, therefore
Performance is similar in terms of index, reference sensitivity, big Signal-to-Noise, acoustic frequency response, intermediate frequency selectivity, total distortion factor, opposite
Audio intermodulation, sideband is non-linear harasses, with these indexs of outer intermodulation, obstruction, reciprocal mixing, intermediate frequency rejection ratio and image-frequency rejection ratio
It is likely to be deteriorated.But since the first and second frequency mixer is addition frequency mixer, and third frequency mixer is subtraction frequency mixer, so its
Situation is separately had any different again with the first and second frequency mixer.In general, subtraction frequency mixer is more stable than addition frequency mixer.
In automatic gain control circuit (also known as AGC threshold circuit) part, because of itself and the AGC thresholding electricity in the first frequency mixer
Road part is similar, thus showed in terms of index it is similar, reference sensitivity, big Signal-to-Noise and automatic gaincontrol characteristic these
Index is likely to be deteriorated.
Due to the first frequency mixer u21With the second three-mixer u22Index performance is similar, so two modules are merged into mixed
Frequency device unit is analyzed.
Table 2 is the mixer module u of the embodiment of the present invention2Accident analysis table.In summary it analyzes, it can be deduced that table 2.
The mixer module u of 2 embodiment of the present invention of table2Accident analysis table
| v1 | v2 | v3 | v4 | v5 | v6 | v7 | v8 | v9 | v10 | v11 | v12 | v13 | v14 | v15 | v1 6 | |
| u2 | N | M | M | M | M | M | M | M | M | M | M | M | M | M | M | M |
(3) test index and digital signal processor module u3Relationship analysis table
Digital signal processor module u3Major function be by analog signal processing be digital signal, come from second and third
The analog intermediate frequency signal of frequency mixer is input to digital signal processor module u by serial ports through analog-to-digital conversion3In (abbreviation DSP),
Output is coupled after digital-to-analogue conversion and audio-frequency amplifier amplification.Analog intermediate frequency signal generates digital AGC after Digital Signal Processing
Level exports processed signal to mixing unit, to realize the gain control of mixing unit.
In digital signal processor module u3In part, when sideband filter when something goes wrong because audio output is wrapped
The another side band contained, which harasses signal, to be correctly validated, so garbage signal can not be filtered out, sideband is caused to harass variation；Because
Digital signal processor module u3The part automatic gain control function of receiver is assumed responsibility for, so working as digital signal processor mould
Block u3When something goes wrong, automatic gaincontrol characteristic is deteriorated.Here digital signal processor module u3It does not include at digital signal
Manage the audio-frequency amplifier and peripheral circuit in device module.
In audio-frequency amplifier part, it is mainly the following the case where performance declines.
1. generating intermodulation or intermodulation between amplified signal
Two signals may generate intermodulation or intermodulation after audio-frequency amplifier, cause signal associated harmonic content or
Other corresponding non-harmonic components increase, and total distortion factor is caused to be deteriorated；When the increase of related non-harmonic component, useless anharmonic wave
Output component level increases, and direct comparative audio intermodulation (in-band intermodulation) can be deteriorated, but since the part DSP is followed by a filtering
Device, so influence of the audio-frequency amplifier part to in-band intermodulation is smaller；Equally, when garbage signal and useful signal produce specially
Frequency relation, with outer intermodulation will be deteriorated, but influence it is smaller.In this case, the inclined of carrier frequency and nominal frequency is surveyed
Difference becomes larger, and frequency error is deteriorated, and frequency stability is affected, but because the definition of frequency error is difference and the ratio for marking frequency
Value, and mark frequency is universal larger, so influence of the audio-frequency amplifier part to frequency error and frequency stability is minimum.
2. gain is too small
When the gain of audio-frequency amplifier is too small, signal output will become smaller, and the reference sensitivity of receiver is caused to decline；When
When measuring big Signal-to-Noise, the audio output of receiver is accordingly reduced, and big Signal-to-Noise is also deteriorated therewith.
Table 3 is the digital signal processor module u of the embodiment of the present invention3Accident analysis table.In summary it analyzes, can obtain
Table 3 out.
In summary it analyzes, it can be deduced that table 3.
The digital signal processor module u of 3 embodiment of the present invention of table3Accident analysis table
(4) test index and frequency synthesis module u4Relationship analysis table
Frequency synthesis module u4It is broadly divided into voltage-control oscillator module Au41, voltage-control oscillator module Bu42, mark frequency module
u43, it makes a concrete analysis of as follows:
1. voltage-control oscillator module Au41With voltage-control oscillator module Bu42Main function is to provide the radio frequency letter of each frequency range
It number is used as local oscillation signal or carries out down coversion.In voltage controlled oscillator part B, because of its working principle and hardware composition and pressure
It is similar to control oscillator part A, so will hereafter analyze together two parts.
In voltage-control oscillator module Au41With voltage-control oscillator module Bu42In, being mainly the following performance may decline
The case where.
A. centre frequency is unstable or tuning range is too small
Voltage-control oscillator module Au41With voltage-control oscillator module Bu42Major function be output frequency and input control electricity
Corresponding signal is pressed, so oscillator is followed by frequency mixer, provides required frequency for receiver.Centre frequency refers to adjustable range
Median, tuning range refer to adjust output frequency variation range.Centre frequency is unstable or tuning range is too small, may
Cause to fall into outside band in the signal in band originally, causes reciprocal mixing, simultaneously as the virtual value of complete signal declines, it is total to lose
True coefficient can also rise.
B. tuning gain is too small
When tuning gain is too small, signal output will become smaller, and the reference sensitivity of receiver is caused to decline；When the big letter of measurement
When number signal-to-noise ratio, the audio output of receiver is accordingly reduced, and big Signal-to-Noise is also deteriorated therewith.
2. marking frequency module u43Main includes the local frequency two for generating the clock frequency and third mixing of Digital Signal Processing
A phaselocked loop and constant-temperature crystal oscillator.
When measurement frequency error, using standard frequency source method, because the signal frequency generated by constant-temperature crystal oscillator is
The frequency standard of receiver, so the frequency error of receiver can become smaller, the frequency of receiver when marking frequency unit when something goes wrong
Stability is deteriorated, and its influence to other indexs is smaller.
Voltage controlled oscillator A, voltage controlled oscillator B and mark frequency module are merged into frequency synthesis module u4Carry out analysis list.
Table 4 is the frequency synthesis module u of the embodiment of the present invention4Accident analysis table.In summary it analyzes, it can be deduced that table 4.
The frequency synthesis module u of 4 embodiment of the present invention of table4Accident analysis table
(5) test index and power module u5Relationship analysis table
It is total to lose because the distorted signal for removing fundametal compoment includes power-supply ripple when power unit generates ripple
True coefficient is deteriorated；When the voltage inaccuracy that power unit provides, the reference level of receiver also can be inaccurate, and audio is caused to be rung
Strain differential.
S3. summarize according to the accident analysis table of each module and test index in S2 and arrange to obtain overall failure analytical table；
Further refinement analysis test index is to the impact factor of each module, if the module is " N " to the impact factor of test index,
Impact factor of the test index to the module is rated " A "；If impact factor is " S ", by test index to the shadow of the module
It rings the factor and is rated " B "；If the module is to when the impact factor of test index is " M ", influence of other modules to test index
When non-" A " the class number of the factor is greater than the first preset value, it is rated " C "；If the module is " M " to the impact factor of test index
When, when other modules " A " class number non-to the impact factor of test index is greater than the second preset value less than the first preset value, grading
For " D "；If the module, to when the impact factor of test index is " M ", other modules are to the impact factor of test index less than the
When two preset values, " E " is rated；Arrange the overall failure analytical table refined.Specially
According to the accident analysis table analysis of above each module and test index, it is not difficult to find out that the property that various pieces are different degrees of
The performance indicator for being likely to keep receiver last can be declined to be deteriorated, however slightly distinguished again between them.By each module and survey
The accident analysis table of examination index has carried out statistics and analysis, lists the performance indicator decline that modules are likely to occur respectively
Situation is specifically shown in Table 5.Table 5 is the overall failure analytical table of the embodiment of the present invention.
The overall failure analytical table of 5 embodiment of the present invention of table
| v1 | v2 | v3 | v4 | v5 | v6 | v7 | v8 | v9 | v10 | v11 | v12 | v13 | v14 | v15 | v1 6 | |
| u1 | N | M | S | N | N | N | N | N | N | N | N | M | N | M | M | N |
| u2 | N | M | M | M | M | M | M | M | M | M | M | M | M | M | M | M |
| u3 | S | M | M | S | N | M | M | N | S | S | N | N | N | N | N | M |
| u4 | M | M | M | N | N | M | N | N | N | N | N | N | M | N | N | N |
| u5 | N | N | N | M | N | M | N | N | N | N | N | N | N | N | N | N |
Because the influence between EM equipment module and test index be it is mutual, it is almost indiscriminate, it is possible to according to
EM equipment module is to the impact factor of test index in table 5, and further refinement analyzes test index to the impact factor of EM equipment module.
In order to more preferably make diagnosis to failure, impact factor of the test index to EM equipment module is divided into 5 grades, be respectively " A ",
" B ", " C ", " D " and " E " indicates that its correlation grows from weak to strong.If EM equipment module is " N ", table to the impact factor of test index
Show between the two almost without association, impact factor of the test index to EM equipment module is rated " A "；If impact factor is " S ",
It indicates the weak correlation of the two, is rated " B "；It, can be according to Probability Principles, when an index declines when impact factor is " M "
Both when, possible malfunctioning module only has one or does not have " B " class, and remaining module is " A " class, is rated " E ", indicate
It is inevitable related；Its possible malfunctioning module has more non-" A " class, is rated " C ", indicates that both sides relation is close；Its possible event
Barrier module has less non-" A " class, is rated " D ", indicates the two strong correlation.According to above-mentioned analysis, the refinement of table 5 is integrated into table 6.
Table 6 is the overall failure analytical table of refinement of the embodiment of the present invention.
The overall failure analytical table of 6 embodiment of the present invention of table refinement
| v1 | v2 | v3 | v4 | v5 | v6 | v7 | v8 | v9 | v10 | v11 | v12 | v13 | v14 | v15 | v1 6 | |
| u1 | A | C | B | A | A | A | A | A | A | A | A | D | A | D | D | A |
| u2 | A | C | C | D | E | C | D | E | E | E | E | D | D | D | D | D |
| u3 | B | C | C | B | A | C | D | A | B | B | A | A | A | A | A | D |
| u4 | E | C | C | A | A | C | A | A | A | A | A | A | D | A | A | A |
| u5 | A | A | A | D | A | C | A | A | A | A | A | A | A | A | A | A |
S4. the test index for testing short-wave receiver machine to be measured, according to each module and survey in the overall failure analytical table of refinement
The relationship of examination index is matched, and determines maintenance situation according to matching result, to be used to overhaul corresponding module, with
Short-wave receiver machine is not torn in realization, which open or not can find in advance machine failure and place under repair in time.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data, specifically:
S1. multiple modules are divided into according to short-wave receiver machine structure to be measured；
S2. it successively analyzes each module in short-wave receiver machine and performance decline or influence when failure to every test index occurs,
And multiple grades are classified as according to influence degree, the accident analysis table of each module and test index is established with this；
S3. impact factor of the refinement test index to each module, the overall failure analytical table refined；
S4. the data of the test index of short-wave receiver machine to be measured are monitored, and according to each in the overall failure analytical table of the refinement
The relationship of module and test index is matched, and maintenance situation is determined according to matching result, for carrying out to corresponding module
Maintenance can find in advance machine failure and place under repair in time to realize and not tear short-wave receiver machine open.
2. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data according to claim 1,
It is characterized in that, test index is further refined in step S3 to the impact factor of each module specifically: a certain test is referred to
It marks for the module that impact factor is greatest level,
If other modules to the impact factor of this test index be not the number of minimum level less than the first preset value when, should
Module is to the impact factor of this test index be the first estate module；
If other modules are greater than the less than the second preset value to the number that the impact factor of this test index is not minimum level
When one preset value, then the module of the module to be to the impact factor of this test index be the second grade；
It, should if other modules are greater than the second preset value to the number that the impact factor of this test index is not minimum level
Module is to the impact factor of this test index be the tertiary gradient module.
3. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data according to claim 1,
It is characterized in that, multiple modules described in step S1 include input protection circuit module u1, mixer module u2, Digital Signal Processing
Device module u3, frequency synthesis module u4With power module u5。
4. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data according to claim 3,
It is characterized in that, input protection circuit module u1Including low-pass filter and antenna attenuator, the performance of low-pass filter declines packet
Include that cutoff frequency is excessively high, too low and at least one of unstable, the performance decline of antenna attenuator includes that decay power is excessive, mistake
It is at least one of small and unstable.
5. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data according to claim 3,
It is characterized in that, mixer module u2Performance decline include that acoustic frequency response is deteriorated, intermediate frequency selectivity is deteriorated, total distortion factor can become
Difference, in-band intermodulation are deteriorated, sideband is harassed, be deteriorated with outer intermodulation variation, intermediate frequency rejection ratio, image-frequency rejection ratio is deteriorated, Clogging indicator
At least one of variation, reciprocal mixing, reference sensitivity decline, Signal-to-Noise variation and automatic gaincontrol characteristic variation.
6. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data according to claim 3,
It is characterized in that, digital signal processor module u3Including audio-frequency amplifier, the performance decline of audio-frequency amplifier includes believing after amplifying
It is at least one of too small that intermodulation or intermodulation, gain are generated between number.
7. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data according to claim 3,
It is characterized in that, frequency synthesis module u4Including voltage controlled oscillator and mark frequency module, the performance decline of voltage controlled oscillator includes center
At least one of frequency is unstable, centre frequency tuning range is too small and tuning gain is too small.
8. a kind of short-wave receiver machine trouble hunting method based on monitoring and test achievement data according to claim 1,
It is characterized in that, it includes: frequency accuracy v that every test index of short-wave receiver machine is marked in step S11, reference sensitivity v2, it is big
Signal-to-Noise v3, acoustic frequency response v4, intermediate frequency selectivity v5, total distortion factor v6, sideband linear crosstalk v7, sideband nonlinear crosstalk
v8, in-band intermodulation v9, with outer intermodulation v10, closing signal selectivity v11, obstruction v12, reciprocal mixing v13, intermediate frequency rejection ratio v14, mirror
Frequency inhibits to compare v15With automatic gaincontrol characteristic v16At least one of.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224767A (en) * | 2019-05-30 | 2019-09-10 | 中国人民解放军海军工程大学 | A kind of shortwave transmission system failure prediction method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100075709A1 (en) * | 2008-09-22 | 2010-03-25 | Haruo Nakano | Radio Base Station and Receiver Fault Diagnosis Method |
| CN103414529A (en) * | 2013-08-26 | 2013-11-27 | 华北计算技术研究所 | Universal automatic testing and fault diagnosis system |
| EP3113445A1 (en) * | 2015-06-30 | 2017-01-04 | Honeywell International Inc. | Methods and systems for adaptive cyber reasoning |
| CN107222272A (en) * | 2017-07-19 | 2017-09-29 | 中国人民解放军海军工程大学 | Short-wave receiver intelligent monitor system based on collection of letters functional completeness |
| CN108199795A (en) * | 2017-12-29 | 2018-06-22 | 北京百分点信息科技有限公司 | The monitoring method and device of a kind of equipment state |
-
2018
- 2018-10-16 CN CN201811203647.9A patent/CN109302247A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100075709A1 (en) * | 2008-09-22 | 2010-03-25 | Haruo Nakano | Radio Base Station and Receiver Fault Diagnosis Method |
| CN103414529A (en) * | 2013-08-26 | 2013-11-27 | 华北计算技术研究所 | Universal automatic testing and fault diagnosis system |
| EP3113445A1 (en) * | 2015-06-30 | 2017-01-04 | Honeywell International Inc. | Methods and systems for adaptive cyber reasoning |
| CN107222272A (en) * | 2017-07-19 | 2017-09-29 | 中国人民解放军海军工程大学 | Short-wave receiver intelligent monitor system based on collection of letters functional completeness |
| CN108199795A (en) * | 2017-12-29 | 2018-06-22 | 北京百分点信息科技有限公司 | The monitoring method and device of a kind of equipment state |
Non-Patent Citations (1)
| Title |
|---|
| 潘红兵等: "基于故障树及LabVIEW的雷达设备故障诊断", 《电子测量技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224767A (en) * | 2019-05-30 | 2019-09-10 | 中国人民解放军海军工程大学 | A kind of shortwave transmission system failure prediction method |
| CN110224767B (en) * | 2019-05-30 | 2020-06-19 | 中国人民解放军海军工程大学 | Fault prediction method for short wave signaling system |
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