CN107132161A - A kind of novel portable Diesel exhaust particles extracts road detection apparatus and method - Google Patents
A kind of novel portable Diesel exhaust particles extracts road detection apparatus and method Download PDFInfo
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- CN107132161A CN107132161A CN201710451632.3A CN201710451632A CN107132161A CN 107132161 A CN107132161 A CN 107132161A CN 201710451632 A CN201710451632 A CN 201710451632A CN 107132161 A CN107132161 A CN 107132161A
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- 239000002245 particle Substances 0.000 title claims abstract description 42
- 238000001514 detection method Methods 0.000 title claims abstract description 30
- 239000000284 extract Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 43
- 238000001914 filtration Methods 0.000 claims abstract description 42
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000001228 spectrum Methods 0.000 claims abstract description 12
- 239000002283 diesel fuel Substances 0.000 claims abstract description 10
- 230000009466 transformation Effects 0.000 claims abstract description 9
- 239000004071 soot Substances 0.000 claims abstract description 5
- 238000012545 processing Methods 0.000 claims description 12
- 238000013459 approach Methods 0.000 claims description 9
- 238000005303 weighing Methods 0.000 claims description 9
- 241000628997 Flos Species 0.000 claims description 6
- 238000002474 experimental method Methods 0.000 claims description 6
- 239000013618 particulate matter Substances 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 5
- 230000003595 spectral effect Effects 0.000 claims description 5
- 238000009825 accumulation Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 3
- 239000011574 phosphorus Substances 0.000 abstract description 3
- 239000008187 granular material Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 2
- 208000019693 Lung disease Diseases 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
Abstract
The present invention relates to a kind of novel portable Diesel exhaust particles extracts road detection apparatus and method, described device includes diesel particulate filter, radio-frequency signal generator, radio frequency receiver, complex control system device and display, filtering bodies are provided with diesel particulate filter, radio-frequency signal generator, radio frequency receiver the complex control system device that is connected respectively with complex control system device are connected with display, are specially：The signal that complex control system device is received to radio frequency receiver carries out Fourier transformation, it is transformed into energy spectrum, resonant frequency is obtained, the functional relation between resulting resonant frequency and the radio frequency resonant frequency and phosphorus content demarcated in advance is searched, the value of carbon carrying capacity in DPF is obtained.The present invention can accurately measure the amount of carbon soot particles in exhaust gas from diesel vehicle, convenient to be applied to whether traffic control department particle content in Road Detection heavy-duty diesel oil tail gas is exceeded, coordinate the appearance of national standard six, the further granular material discharged standard of specification diesel vehicle.
Description
Technical field
The present invention relates to a kind of road detection apparatus and method, more particularly, to a kind of novel portable exhaust gas from diesel vehicle
Grain thing road detection apparatus and method.
Background technology
Diesel engine compare gasoline engine, with relatively low fuel consumption and larger power, thus with excellent dynamic property,
Economy, durability are used widely in the car, and China's diesel vehicle recoverable amount increases continuously and healthily in recent decades, but its
The discharge of particulate matter is 30~50 times of gasoline engine so that the heavy-duty diesel vehicle PM for only accounting for motor vehicle total amount 3.66% accounts for total motor-driven
The 90% of car discharge capacity, these particulates emitted cause the serious haze problem of China, while can also make one to draw
Chronic lung disease is played, or even the component on exhaust micro particle surface more than 90% is carcinogen, therefore, controls diesel particulate emission ten
Divide important.
It is current main that collecting regenerated, such as DPF particle trappers are carried out to particulate matter by some post-processing approach, can be with
The exhaust particulate thing of trapping 90%, but exist and do not fill exhaust gas processing device DPF, exhaust gas processing device more than trap particulate matter threshold
The problems such as being changed without and faked during diesel vehicle annual test after value so that numerous Diesel exhaust particles extracts are not treated
Under the conditions of just directly discharged, seriously hinder the release and implementation of national emission of diesel engine standard, and cause serious
Haze problem and environmental pollution, therefore in order to tackle problem above, traffic control department carries out Road Detection gesture to heavy-duty diesel vehicle and existed
It must go.The light tight blackness detector used in annual test is due to complicated, and precision is low, and detection environmental requirement is higher, carries not
Just and the problems such as price is high, Road Detection of the traffic control department to heavy-duty diesel vehicle is not suitable for it.
The content of the invention
In order to overcome the shortcomings of that prior art is present, the invention provides a kind of novel portable Diesel exhaust particles extracts
Road detection apparatus and method.
A kind of novel portable Diesel exhaust particles extracts road detection apparatus, described device is filtered including diesel particulate
Device, radio-frequency signal generator, radio frequency receiver, complex control system device and display, the radio-frequency signal generator, radio frequency receiver are set
Put in diesel particulate filter, filtering bodies are provided with the diesel particulate filter, the filtering bodies are filtered with diesel particulate
Use and be detachably connected between device；The radio-frequency signal generator, radio frequency receiver are connected with complex control system device respectively, described
Complex control system device is connected with display.
Described radio-frequency signal generator is used to launch radiofrequency signal, and radio frequency receiver is used to obtain radiofrequency signal, Comprehensive Control
System and device is used to measure carbon carrying capacity in diesel particulate filter (DPF) in real time according to the change of radio frequency resonant frequency.Specially
The signal that complex control system device is received to radio frequency receiver carries out Fourier transformation, energy spectrum is transformed into, to the energy
Measure spectral curve and carry out certain smoothing processing, obtain the frequency corresponding to peak value, as resonant frequency, by resulting resonance frequency
Functional relation between rate and the radio frequency resonant frequency and phosphorus content demarcated in advance is searched, and obtains the value of carbon carrying capacity in DPF.
Preferably, the radio-frequency signal generator is arranged on filtering bodies side, radio frequency receiver is arranged on filtering bodies opposite side.
Preferably, the filtering bodies are arranged on the center of diesel particulate filter.
Preferably, the diesel particulate filter is connected by unicom pipeline with exhausting pipe of diesel oil vehicle.
A kind of novel portable Diesel exhaust particles extracts Approach for road detection, using said apparatus, comprises the steps：
(1) carry out calibration experiment and obtain resonant frequency-carbon particle figure-of-merit curve；
(2) tail gas is discharged from exhausting pipe of diesel oil vehicle, enters diesel particulate filter by unicom pipeline, and constantly in mistake
Filter and accumulated on body；
(3) radio-frequency signal generator launch certain frequency wave band etc. amplitude radio-frequency range enter diesel particulate filter chamber
Body, the filtering bodies for having carbon particle by accumulation；
(4) radio signal transmission after the change that radio frequency receiver will be collected in certain time is filled to complex control system
Put, and the signal collected is handled, obtain the value of carbon carrying capacity；
(5) after reaching to a certain degree the time for accumulating soot particulate matter, complex control system device is by the carbon carrying capacity measured
Value shown by display, and contrasted with standard value, judge whether the heavy-duty diesel vehicle of Road Detection exceedes
Standard.
Preferably, step (1) is concretely comprised the following steps：
(a) exemplar of filtering bodies is weighed, obtains the quality for not loading filtering bodies exemplar；
(b) cross and diesel particulate filter is connected to carbon carrying capacity in exhaust gas from diesel vehicle floss hole progress diesel particulate filter
Loading；
(c) by the way that filtering bodies after loading are carried out with quality weighing, income value obtains matter after being compared with non-load mass
Amount is poor, and quality difference value is recorded；
(d) radio-frequency signal generator launch respectively each frequency band etc. amplitude radio-frequency range enter for the first time loading carbon particle
Diesel particulate filter cavity；
(e) radio frequency receiver in transit chamber body transmits a signal to complex control system device, and radiofrequency signal is carried out
Processing, by Fourier transformation, is transformed into energy spectrum, and certain smoothing processing is carried out to the energy spectral curve, peak value is obtained
Corresponding frequency, as resonant frequency, the resonant frequency is recorded, corresponding with above-mentioned progress of poor quality；
(f) diesel particulate filter is connected to exhaust gas from diesel vehicle floss hole again and carries out carbon particle in diesel particulate filter
Second of loading of concentration；
(g) corresponding relation that above-mentioned d~step e obtains resonant frequency and carbon particle quality is repeated.
Preferably, in step (3), the amplitude radio-frequency range scope such as described is 0.4~2.4GHz.
Preferably, step (4) is specially：Signal is first subjected to Fourier transformation, energy spectrum is transformed into, and calculate processing
Frequency at energy attenuation least part in energy spectrum, i.e. crest, according to the frequency of gained crest, it is real that control carries out demarcation in advance
Obtained resonant frequency-carbon particle figure-of-merit curve is tested, the value of carbon carrying capacity trapped in diesel particulate filter is determined.
Preferably, the concrete operations of step (a) are：Using positive negative error for 0.01g electronic balance to not loading
Filtering bodies exemplar is weighed, and first carries out withered, cleaning before weighing to balance；Then filtering bodies exemplar is put down gently on electronic balance,
The record data after registration is stable, repeats to weigh three times, regard three weighing average values as filtering bodies exemplar quality.
Preferably, in step (d), frequency band is 0.4~2.4GHz.
The present invention have the advantages that high precision, be easy to carry about with one, it is cheap, can widely use, suitable traffic control department
Road Detection；Corresponding relation of the invention based on radio frequency resonant frequency and carbon carrying capacity carries out carbon carrying capacity in DPF filtering bodies in real time
Measurement, can accurately measure the amount of carbon soot particles in exhaust gas from diesel vehicle, convenient to be applied to traffic control department heavy in Road Detection
Whether particle content is exceeded in exhaust gas from diesel vehicle, coordinates the appearance of national standard six, the further granular material discharged mark of specification diesel vehicle
It is accurate.
Brief description of the drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but invention which is intended to be protected is simultaneously
Not limited to this.
Embodiment 1
A kind of reference picture 1, novel portable Diesel exhaust particles extracts road detection apparatus, described device includes diesel oil
Grain filter 1, radio-frequency signal generator 2, radio frequency receiver 3, complex control system device 4 and display 5, the radio-frequency signal generator 2,
Radio frequency receiver 3 is arranged in diesel particulate filter 1, and filtering bodies 6, the filtering are provided with the diesel particulate filter 1
Using being detachably connected between body 6 and diesel particulate filter 1, it is easy to the dismounting during weighing of filtering bodies 6；The radio-frequency signal generator
2 are arranged on the side of filtering bodies 6, and radio frequency receiver 3 is arranged on the opposite side of filtering bodies 6, and the filtering bodies 6 are arranged on diesel particulate mistake
The center of filter 1.The radio-frequency signal generator 2, radio frequency receiver 3 are connected with complex control system device 4 respectively, described comprehensive
Control system device 4 is closed with display 5 to be connected；The diesel particulate filter passes through unicom pipeline 7 and exhausting pipe of diesel oil vehicle phase
Connection.
Described radio-frequency signal generator 2 is used to launch radiofrequency signal, and radio frequency receiver 3 is used to obtain radiofrequency signal, comprehensive control
System and device 4 processed is used to measure carbon carrying capacity in diesel particulate filter (DPF) in real time according to the change of radio frequency resonant frequency.Specifically
For：The signal that complex control system device 4 is received to radio frequency receiver 3 carries out Fourier transformation, energy spectrum is transformed into, to institute
State energy spectral curve and carry out certain smoothing processing, obtain the frequency corresponding to peak value, as resonant frequency, will be resulting humorous
Functional relation between vibration frequency and the radio frequency resonant frequency and phosphorus content demarcated in advance is searched, and obtains carbon carrying capacity in DPF
Value.Complex control system device 4 shows the value of the carbon carrying capacity measured by display 5, and is carried out with standard value
Contrast, judges whether the heavy-duty diesel vehicle of Road Detection is above standard.
When the present invention is based on filtering bodies carbon carrying capacity difference in DPF resonators, the radiofrequency signal that resonance is produced in cavity (is penetrated
Frequently：Radio Frequency) frequency also have corresponding skew, found by confirmatory experiment, resonant frequency of the present invention it is inclined
Move and there is good linear relationship between carbon carrying capacity.Therefore can be by measuring the offset of resonant frequency come to DPF carbon
Carrying capacity is detected in real time, reflects the requirement whether Diesel exhaust particles extracts are up to state standards.
Embodiment 2
A kind of novel portable Diesel exhaust particles extracts Approach for road detection, using the described device of embodiment 1, including under
State step：
(1) carry out calibration experiment and obtain resonant frequency-carbon particle figure-of-merit curve；
Concretely comprise the following steps：
(a) exemplar of filtering bodies 6 is weighed, obtains the quality for not loading filtering bodies exemplar；
Concrete operations are：The filtering bodies exemplar not loaded is weighed for 0.01g electronic balance using positive negative error, weighed
It is preceding that withered, cleaning is first carried out to balance；Then filtering bodies exemplar is put down gently on electronic balance, number is recorded after registration is stable
According to repetition is weighed three times, regard three weighing average values as filtering bodies exemplar quality；
(b) cross and diesel particulate filter 1 is connected to carbon carrying capacity in exhaust gas from diesel vehicle floss hole progress diesel particulate filter
Loading；
(c) by the way that filtering bodies after loading 6 are carried out with quality weighing, income value obtains matter after being compared with non-load mass
Amount is poor, and quality difference value is recorded；
(d) radio-frequency signal generator 2 respectively transmitting boundary 0.4~2.4GHz each frequency band etc. amplitude radio-frequency range enter
Enter to load the diesel particulate filter cavity of carbon particle for the first time；
(e) radio frequency receiver 3 in transit chamber body transmits a signal to complex control system device 4, and radiofrequency signal is entered
Row processing, by Fourier transformation, is transformed into energy spectrum, and certain smoothing processing is carried out to the energy spectral curve, peak is obtained
The corresponding frequency of value, as resonant frequency, the resonant frequency is recorded, corresponding with above-mentioned progress of poor quality；
(f) diesel particulate filter 1 is connected to exhaust gas from diesel vehicle floss hole again and carries out carbon in diesel particulate filter
Second of loading of grain concentration；
(g) corresponding relation that above-mentioned d~step e obtains resonant frequency and carbon particle quality is repeated；
(2) tail gas is discharged from exhausting pipe of diesel oil vehicle, enters diesel particulate filter 1 by unicom pipeline 7, and constantly exist
Accumulated in filtering bodies 6；
(3) radio-frequency signal generator 2 launch respectively scope for 0.4~2.4GHz each frequency band etc. amplitude radio-frequency range
Into the cavity of diesel particulate filter 1, there are the filtering bodies 6 of carbon particle by accumulation；
(4) radio signal transmission after the change that radio frequency receiver 3 will be collected in certain time is to complex control system
Device 4, and the signal collected is handled, obtain the value of carbon carrying capacity；
Specially：Signal is first subjected to Fourier transformation, energy spectrum is transformed into, and calculate energy attenuation in processing energy spectrum
Frequency at least part, i.e. crest, according to the frequency of gained crest, control carries out the resonance frequency that calibration experiment is obtained in advance
Rate-carbon particle figure-of-merit curve, determines the value of carbon carrying capacity trapped in diesel particulate filter；
(5) after the time for accumulating soot particulate matter reaching 5 minutes, complex control system device 4 is by the carbon carrying capacity measured
Value is shown by display 5, and is contrasted with standard value, judges whether the heavy-duty diesel vehicle of Road Detection exceedes mark
It is accurate.
Claims (10)
1. a kind of novel portable Diesel exhaust particles extracts road detection apparatus, it is characterised in that：Described device includes diesel oil
Particulate filter, radio-frequency signal generator, radio frequency receiver, complex control system device and display, the radio-frequency signal generator, radio frequency
Receiver is arranged in diesel particulate filter, and filtering bodies, the filtering bodies and diesel oil are provided with the diesel particulate filter
Use and be detachably connected between particulate filter；The radio-frequency signal generator, radio frequency receiver respectively with complex control system device
It is connected, the complex control system device is connected with display.
2. novel portable Diesel exhaust particles extracts road detection apparatus according to claim 1, it is characterised in that：Institute
State radio-frequency signal generator and be arranged on filtering bodies side, radio frequency receiver is arranged on filtering bodies opposite side.
3. novel portable Diesel exhaust particles extracts road detection apparatus according to claim 1, it is characterised in that：Institute
State the center that filtering bodies are arranged on diesel particulate filter.
4. novel portable Diesel exhaust particles extracts road detection apparatus according to claim 1, it is characterised in that：Institute
Diesel particulate filter is stated by unicom pipeline with exhausting pipe of diesel oil vehicle to be connected.
5. a kind of novel portable Diesel exhaust particles extracts Approach for road detection, it is characterised in that：Using described in claim 1
Device, comprises the steps：
(1) carry out calibration experiment and obtain resonant frequency-carbon particle figure-of-merit curve；
(2) tail gas is discharged from exhausting pipe of diesel oil vehicle, enters diesel particulate filter by unicom pipeline, and constantly in filtering bodies
Upper accumulation；
(3) radio-frequency signal generator launch certain frequency wave band etc. amplitude radio-frequency range enter diesel particulate filter cavity, warp
Crossing accumulation has the filtering bodies of carbon particle；
(4) radio signal transmission after the change that radio frequency receiver will be collected in certain time is to complex control system device,
And the signal collected is handled, obtain the value of carbon carrying capacity；
(5) after reaching to a certain degree the time for accumulating soot particulate matter, complex control system device is by the value of the carbon carrying capacity measured
Shown, and contrasted with standard value by display, judge whether the heavy-duty diesel vehicle of Road Detection is above standard.
6. novel portable Diesel exhaust particles extracts Approach for road detection according to claim 5, it is characterised in that step
(1) concretely comprise the following steps：
(a) exemplar of filtering bodies is weighed, obtains the quality for not loading filtering bodies exemplar；
(b) cross by diesel particulate filter be connected to exhaust gas from diesel vehicle floss hole carry out diesel particulate filter in carbon carrying capacity plus
Carry；
(c) by carrying out quality weighing to filtering bodies after loading, income value obtains of poor quality after being compared with non-load mass,
Quality difference value is recorded；
(d) radio-frequency signal generator launch respectively each frequency band etc. amplitude radio-frequency range enter for the first time load carbon particle bavin
Oil particles filter cavity；
(e) radio frequency receiver in transit chamber body transmits a signal to complex control system device, and radiofrequency signal is handled,
By Fourier transformation, energy spectrum is transformed into, certain smoothing processing is carried out to the energy spectral curve, is obtained corresponding to peak value
Frequency, as resonant frequency records the resonant frequency, corresponding with above-mentioned progress of poor quality；
(f) diesel particulate filter is connected to exhaust gas from diesel vehicle floss hole again and carries out carbon particle concentration in diesel particulate filter
Second loading；
(g) corresponding relation that above-mentioned d~step e obtains resonant frequency and carbon particle quality is repeated.
7. novel portable Diesel exhaust particles extracts Approach for road detection according to claim 5, it is characterised in that：Step
(3) in, the amplitude radio-frequency range scope such as described is 0.4~2.4GHz.
8. novel portable Diesel exhaust particles extracts Approach for road detection according to claim 5, it is characterised in that step
(4) it is specially：Signal is first subjected to Fourier transformation, energy spectrum is transformed into, and it is minimum to calculate energy attenuation in processing energy spectrum
Frequency at part, i.e. crest, according to the frequency of gained crest, control carries out resonant frequency-carbon that calibration experiment is obtained in advance
Granular mass curve, determines the value of carbon carrying capacity trapped in diesel particulate filter.
9. novel portable Diesel exhaust particles extracts Approach for road detection according to claim 6, it is characterised in that step
(a) concrete operations are：The filtering bodies exemplar not loaded is weighed for 0.01g electronic balance using positive negative error, before weighing
Withered, cleaning is first carried out to balance；Then filtering bodies exemplar is put down gently on electronic balance, the record data after registration is stable,
Repeat to weigh three times, regard three weighing average values as filtering bodies exemplar quality.
10. novel portable Diesel exhaust particles extracts Approach for road detection according to claim 6, it is characterised in that：Step
Suddenly in (d), frequency band is 0.4~2.4GHz.
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Cited By (4)
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| CN107966391A (en) * | 2017-11-23 | 2018-04-27 | 常熟理工学院 | Diesel particulate trap arresting efficiency verification method and device under vehicle-mounted vibration condition |
| CN108647430A (en) * | 2018-05-09 | 2018-10-12 | 中国重汽集团济南动力有限公司 | A kind of DPF carbon load computational methods |
| CN109141890A (en) * | 2018-08-31 | 2019-01-04 | 天津大学 | Device and method based on Depolarization Ratio characterization diesel engine vent gas soot breakage properties |
| CN111811980A (en) * | 2020-08-17 | 2020-10-23 | 上海海蔚科技有限公司 | Portable diesel vehicle tail gas detection device |
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