CN208621515U - Active Terahertz timber water content device for fast detecting - Google Patents
Active Terahertz timber water content device for fast detecting Download PDFInfo
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- CN208621515U CN208621515U CN201821159231.7U CN201821159231U CN208621515U CN 208621515 U CN208621515 U CN 208621515U CN 201821159231 U CN201821159231 U CN 201821159231U CN 208621515 U CN208621515 U CN 208621515U
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- terahertz
- waveguide
- conveyer belt
- collimation lens
- thz wave
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Abstract
The utility model provides a kind of active Terahertz timber water content device for fast detecting, belong to Terahertz detection technique field, its structure is terahertz sources source connection waveguide, the THz wave of terahertz sources source transmitting is emitted by the modulation of waveguide, collimation lens is provided on the axial direction of waveguide, the optical axis of collimation lens and the axial direction of waveguide coincide；Terahertz camera receives the THz wave that collimation lens penetrates；It is provided with conveyer belt in space between collimation lens and terahertz camera, part to be detected is placed on conveyer belt；Conveyer belt passes through the space between collimation lens and terahertz camera；Terahertz camera is connected with image processing module by signal wire, and image processing module configures on computers.The contact type measurement that the device changes transmission is non-contact measurement, detection time block, the information such as tomography water content, average moisture content that can accomplish the working condition that the operating with conveyer belt matches to detect part timber to be detected.
Description
Technical field
The utility model relates to Terahertz detection technique field, specifically a kind of active Terahertz timber water content
Device for fast detecting.
Background technique
Lack the online timber device for detecting water content of non-contact type high-precision, existing timber water content currently on the market
For example infrared wire testing method of detection method, conductivity test method etc..Conductivity detection method is contact type measurement, detection time
It is difficult to meet the quick detection of batch timber, infra-red ray detection device is since it needs to be added lens and water in practical application
Vapour condenses easily on camera lens causes detection accuracy limited, causes the deficiency of existing detection technique.
Summary of the invention
The technical assignment of the utility model is to solve the deficiencies in the prior art, and it is aqueous to provide a kind of active Terahertz timber
Measure device for fast detecting.
The technical solution of the utility model realizes that the active Terahertz timber water content is quickly examined in the following manner
Device is surveyed, structure includes terahertz sources source, waveguide, collimation lens, part to be detected, conveyer belt, terahertz camera, image
Processing module,
Terahertz sources source connects waveguide, THz wave the modulating by waveguide of terahertz sources source transmitting
It penetrates,
Collimation lens is provided on the axial direction of waveguide, the optical axis of collimation lens and the axial direction of waveguide are mutually be overlapped
It closes；
Terahertz sources source and waveguide are vertically arranged；Terahertz camera, Terahertz are provided with below collimation lens
The reception of camera is face-up, and terahertz camera receives the THz wave that collimation lens penetrates；
It is provided with conveyer belt in space between collimation lens and terahertz camera, is placed on conveyer belt to be detected
Part；
Conveyer belt passes through the space between collimation lens and terahertz camera；
Terahertz sources source, waveguide, collimation lens, terahertz camera constitute testing agency, terahertz sources source, waveguide
Pipe, collimation lens, terahertz camera are integral by the fixation of testing agency's fixed frame；
Testing agency is configured with driving device, and driving device is arranged on detection case, and testing agency is arranged in detection case
Chamber,
Conveyer belt horizontal transmission operating, part to be detected are placed in transmission belt surface, and conveyer belt and part synchronous cutting to be detected are quasi-
The THz wave that straight lens emit to terahertz camera；THz wave is issued from collimation lens, successively penetrates part to be detected and biography
Band is sent, terahertz camera receiving plane is reached；
Driving device drives testing agency to move back and forth, and makes between the direction of motion of testing agency and the direction of transfer of conveyer belt
It has a rest in the same direction or reversed；
Terahertz camera is connected with image processing module by signal wire, and image processing module configures on computers, meter
Calculation machine and image processing module cooperation manipulation driving device and conveyer belt work, computer record and operational analysis image procossing mould
The processing information of block.
Air-jet device, the jet of air-jet device are additionally provided in the testing agency of the side of the direction of the launch of collimation lens
Towards collimation lens.
The frequency range of THz source is 100GHZ~10THZ, is continuous terahertz sources source, and preferably selection 300GHZ is too
Hertz emission source.
Waveguide material is metallic copper, carries out shaping to THz wave and wave beam is regular, is emitted THz wave with 30 °.
Collimation lens material is High Resistivity Si, is transparent material relative to THz wave, and focal position is waveguide outgoing
Mouth position, the THz wave that collimation lens launches waveguide are refracted as collimated light beam.
115~170m of nozzle air consumption is arranged in air-jet device3/ min, 10~20 times of air amplification factor.
The speed and driving device of conveyer belt, which match, enables THz wave to irradiate whole face timber, and conveyer belt material is
Polytetrafluoroethylene (PTFE) is transparent material, 0~2000cm/s of speed adjustable range relative to THz wave.
Driving device is set as the adjusting of screw type shift reciprocately, and adjustable range is along x-axis to distribution, the upward driving row of x-axis
Journey can be adjusted by lead screw.
The investigative range of terahertz camera is 0.1THZ~10THZ.
Image processing module collects the THz wave for penetrating part to be detected, and it is imaged, by collecting Terahertz
The energy information of wave, and with the power ratio in the terahertz sources source of constant power to the decaying of THz wave is obtained, according to terahertz
Hereby the chance water fade amount of wave is directly proportional to moisture content, and the water content of timber is gone out by Computing.
Utility model has the following beneficial effects compared with the prior art:
The active Terahertz timber water content device for fast detecting can quickly detect part to be detected, such as: timber,
Water content can collect the THz wave for penetrating timber using image processing module, and it is imaged, by collecting too
The energy information of Hertz wave, and with the power ratio in the terahertz sources source of constant power to obtaining the decaying of THz wave, according to
The chance water fade amount of THz wave is directly proportional to moisture content, derives and calculate the water content of timber.
The contact type measurement that the active Terahertz timber water content device for fast detecting changes transmission is contactless survey
Amount, detection time block can accomplish the working condition that the operating with conveyer belt matches to detect the tomography of part timber to be detected
The information such as water content, average moisture content, to meet the quick detection of batch timber.
Active Terahertz timber water content device for fast detecting design is reasonable, structure is simple, safe and reliable, user for this
Just, easy to maintain, it has good value for applications.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the utility model.
Marks in the drawings respectively indicate:
1, terahertz sources source, 2, waveguide, 3, collimation lens, 4, air-jet device, 5, driving device, 6, part to be detected
(timber), 7, conveyer belt, 8, terahertz camera, 9, image processing module, 10, computer,
11, testing agency, 12, detection case, 13, detection box cavity.
Specific embodiment
The active Terahertz timber water content device for fast detecting of the utility model is made with reference to the accompanying drawing following detailed
It describes in detail bright.
As shown in the picture, the active Terahertz timber water content device for fast detecting of the utility model, structure include
Terahertz sources source, waveguide, collimation lens, part to be detected, conveyer belt, terahertz camera, image processing module,
Terahertz sources source 1 connects waveguide 2, and the THz wave that terahertz sources source 1 emits passes through the modulation of waveguide 2
Outgoing,
Collimation lens 3, the optical axis of collimation lens 3 and the axial direction of waveguide 2 are provided on the axial direction of waveguide 2
It coincides；
Terahertz sources source 1 and waveguide 2 are vertically arranged；The lower section of collimation lens 3 is provided with terahertz camera 8, too
The reception of hertz camera is face-up, and terahertz camera receives the THz wave that collimation lens penetrates；
It is provided with conveyer belt 7 in space between collimation lens 3 and terahertz camera 8, is placed on conveyer belt 7 to be checked
Survey part 6；
Conveyer belt 7 passes through the space between collimation lens and terahertz camera；
Terahertz sources source, waveguide, collimation lens, terahertz camera constitute testing agency 11, terahertz sources source, wave
Conduit, collimation lens, terahertz camera are integral by the fixation of testing agency's fixed frame；
Testing agency is configured with driving device 5, and driving device 5 is arranged on detection case 12, and the setting of testing agency 11 is being examined
Measuring tank inner cavity 13,
Conveyer belt horizontal transmission operating, part to be detected are placed in transmission belt surface, and conveyer belt and part synchronous cutting to be detected are quasi-
The THz wave that straight lens emit to terahertz camera；THz wave is issued from collimation lens, successively penetrates part to be detected and biography
Band is sent, terahertz camera receiving plane is reached；
Driving device 5 drives testing agency 11 to move back and forth, and makes the direction of motion of testing agency and the sender of conveyer belt
It is in the same direction or reversed to interval；
Terahertz camera is connected with image processing module 9 by signal wire, and image processing module configures on computer 10,
Computer and image processing module cooperation manipulation driving device and conveyer belt work, computer record and operational analysis image procossing
The processing information of module.
Air-jet device, the jet of air-jet device are additionally provided in the testing agency of the side of the direction of the launch of collimation lens
Towards collimation lens.
The frequency range of THz source is 100GHZ~10THZ, is continuous terahertz sources source, and preferably selection 300GHZ is too
Hertz emission source.
Waveguide material is metallic copper, carries out shaping to THz wave and wave beam is regular, is emitted THz wave with 30 °.
Collimation lens material is High Resistivity Si, is transparent material relative to THz wave, and focal position is waveguide outgoing
Mouth position, the THz wave that collimation lens launches waveguide are refracted as collimated light beam.
115~170m of nozzle air consumption is arranged in air-jet device3/ min, 10~20 times of air amplification factor.
The speed and driving device of conveyer belt, which match, enables THz wave to irradiate whole face timber, and conveyer belt material is
Polytetrafluoroethylene (PTFE) is transparent material, 0~2000cm/s of speed adjustable range relative to THz wave.
Driving device is set as the adjusting of screw type shift reciprocately, and adjustable range is along x-axis to distribution, the upward driving row of x-axis
Journey can be adjusted by lead screw.
The investigative range of terahertz camera is 0.1THZ~10THZ.
Image processing module collects the THz wave for penetrating part to be detected, and it is imaged, by collecting Terahertz
The energy information of wave, and with the power ratio in the terahertz sources source of constant power to the decaying of THz wave is obtained, according to terahertz
Hereby the chance water fade amount of wave is directly proportional to moisture content, and the water content of timber is gone out by Computing.
The THz wave that the terahertz sources source 1 of the active Terahertz timber water content device for fast detecting emits passes through
The modulation of waveguide 2 is emitted with special angle, the THz wave of outgoing be collimated lens 3 receive and by further collimation with
Collimated light beam is radiated on timber, and the moisture contained in timber can absorb certain Terahertz energy, remaining Terahertz energy
Timber can be penetrated and conveyer belt reaches terahertz camera 8, received by terahertz camera 8, driving mechanism 5 drives terahertz sources source
1, waveguide 2, collimation lens 3, terahertz camera 8 move back and forth along the x-axis direction and its movement rate and transmission tape speed phase
It is equipped with complete irradiation timber.Received signal is presented the image of timber by the processing of image processing module 9, shows
The water content distribution and moisture content value of timber, and pass through the average moisture content value that analysis obtains timber.For water in actual condition
In the big working environment of vapour, camera lens is easy condensation, and air-jet device is added, the drying to keep camera lens is purged to camera lens.
THz source, frequency range 100GHZ-10THZ is continuous terahertz sources source, and the present apparatus is used as and most preferably selects
300GHZ terahertz sources source, therefore wave band transmission power with higher and power stability.
Waveguide, material are metallic copper, carry out shaping to THz wave and wave beam is regular, are emitted THz wave with 30 °.
Collimation lens, material are High Resistivity Si, are transparent material relative to THz wave, and focal position is waveguide outgoing
Mouth position.
Air-jet device, nozzle air consumption 115-170, air amplification factor 10-20.
Conveyer belt, speed and driving device 5, which match, enables THz wave to irradiate whole face timber, conveyer belt material
It relative to THz wave is transparent material for polytetrafluoroethylene (PTFE).Speed adjustable range 0-2000cm/s.
Driving device is adjusted for lead screw displacement, and adjustable range is distributed along x, can modify it in x according to the actual size of timber
Driving trip on axis.
Terahertz camera, investigative range 0.1THZ-10THZ.
Image processing module can collect the THz wave for penetrating timber, and it is imaged, by collecting Terahertz
The energy information of wave, and with the power ratio in the terahertz sources source of constant power to the decaying of THz wave is obtained, according to terahertz
Hereby the chance water fade amount of wave is directly proportional to moisture content, derives the water content of timber.
Claims (10)
1. active Terahertz timber water content device for fast detecting, it is characterised in that including terahertz sources source, waveguide, standard
Straight lens, part to be detected, conveyer belt, terahertz camera, image processing module,
Terahertz sources source connects waveguide, and the THz wave of terahertz sources source transmitting is emitted by the modulation of waveguide,
Collimation lens is provided on the axial direction of waveguide, the optical axis of collimation lens and the axial direction of waveguide coincide；
Terahertz sources source and waveguide are vertically arranged；Terahertz camera, terahertz camera are provided with below collimation lens
Reception it is face-up, terahertz camera receive collimation lens penetrate THz wave；
It is provided with conveyer belt in space between collimation lens and terahertz camera, part to be detected is placed on conveyer belt；
Conveyer belt passes through the space between collimation lens and terahertz camera；
Terahertz sources source, waveguide, collimation lens, terahertz camera constitute testing agency, terahertz sources source, waveguide,
Collimation lens, terahertz camera are integral by the fixation of testing agency's fixed frame；
Testing agency is configured with driving device, and driving device is arranged on detection case, and testing agency's setting is detecting box cavity,
Conveyer belt horizontal transmission operating, part to be detected are placed in transmission belt surface, and conveyer belt and part synchronous cutting to be detected collimation are saturating
The THz wave that mirror emits to terahertz camera；THz wave is issued from collimation lens, successively penetrates part to be detected and conveyer belt,
Reach terahertz camera receiving plane；
Driving device drives testing agency to move back and forth, and the direction of transfer interval of the direction of motion and conveyer belt that make testing agency is same
To or it is reversed；
Terahertz camera is connected with image processing module by signal wire, and image processing module configures on computers, computer
Cooperate manipulation driving device and conveyer belt work, computer record and operational analysis image processing module with image processing module
Handle information.
2. active Terahertz timber water content device for fast detecting according to claim 1, it is characterised in that: collimating
It is additionally provided with air-jet device in the testing agency of the side of the direction of the launch of lens, the jet of air-jet device is towards collimation lens.
3. active Terahertz timber water content device for fast detecting according to claim 1, it is characterised in that: Terahertz
The frequency range in source is 100GHZ~10THZ, is continuous terahertz sources source.
4. active Terahertz timber water content device for fast detecting according to claim 1, it is characterised in that: waveguide
Material is metallic copper, carries out shaping to THz wave and wave beam is regular, is emitted THz wave with 30 °.
5. active Terahertz timber water content device for fast detecting according to claim 1, it is characterised in that: collimation is saturating
Mirror material is High Resistivity Si, is transparent material relative to THz wave, and focal position is waveguide exit portal position, collimation lens
The THz wave that waveguide is launched is refracted as collimated light beam.
6. active Terahertz timber water content device for fast detecting according to claim 2, it is characterised in that: jet dress
Install 115~170m of nozzle air consumption3/ min, 10~20 times of air amplification factor.
7. active Terahertz timber water content device for fast detecting according to claim 1, it is characterised in that: conveyer belt
Speed and driving device match THz wave enabled to irradiate whole face timber, conveyer belt material is that polytetrafluoroethylene (PTFE) is opposite
In THz wave be transparent material, 0~2000cm/s of speed adjustable range.
8. active Terahertz timber water content device for fast detecting according to claim 1, it is characterised in that: driving dress
It installs and is set to the adjusting of screw type shift reciprocately, for adjustable range along x-axis to distribution, the upward driving trip of x-axis can pass through lead screw tune
Section.
9. active Terahertz timber water content device for fast detecting according to claim 1, it is characterised in that: Terahertz
The investigative range of camera is 0.1THZ~10THZ.
10. active Terahertz timber water content device for fast detecting according to claim 1, it is characterised in that: image
Processing module collects the THz wave for penetrating part to be detected, and it is imaged, by collecting the energy information of THz wave,
And with the power ratio in the terahertz sources source of constant power to the decaying of THz wave is obtained, according to the chance water fade of THz wave
Amount is directly proportional to moisture content, and the water content of timber is gone out by Computing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821159231.7U CN208621515U (en) | 2018-07-21 | 2018-07-21 | Active Terahertz timber water content device for fast detecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821159231.7U CN208621515U (en) | 2018-07-21 | 2018-07-21 | Active Terahertz timber water content device for fast detecting |
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| Publication Number | Publication Date |
|---|---|
| CN208621515U true CN208621515U (en) | 2019-03-19 |
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| CN201821159231.7U Active CN208621515U (en) | 2018-07-21 | 2018-07-21 | Active Terahertz timber water content device for fast detecting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665897A (en) * | 2021-01-06 | 2021-04-16 | 哈尔滨工程大学 | Wet-type timber water content check out test set |
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2018
- 2018-07-21 CN CN201821159231.7U patent/CN208621515U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112665897A (en) * | 2021-01-06 | 2021-04-16 | 哈尔滨工程大学 | Wet-type timber water content check out test set |
| CN112665897B (en) * | 2021-01-06 | 2022-07-22 | 哈尔滨工程大学 | Wet-type timber water content check out test set |
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