CN207963950U - Lumber quality detecting system - Google Patents
Lumber quality detecting system Download PDFInfo
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- CN207963950U CN207963950U CN201820364954.4U CN201820364954U CN207963950U CN 207963950 U CN207963950 U CN 207963950U CN 201820364954 U CN201820364954 U CN 201820364954U CN 207963950 U CN207963950 U CN 207963950U
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Abstract
The utility model discloses lumber quality detecting system, speed measuring module is set, measure the transmission speed of ultrasonic wave in wood, Weighing module is set and measures wood weight, test width detection module and length detection module detect the width and length of timber respectively, pass through weight, length, width can obtain the averag density of timber, in conjunction with the transmission speed of ultrasonic wave in wood, it can get the intensity of timber, by detecting the spread speed of gamma rays in wood, it can get the moisture content of timber, the utility model provides detection module, calculating for intensity and moisture content provides data basis, it can judge lumber quality from intensity and moisture content, improve quality testing accuracy.
Description
Technical field
The utility model is related to wood nondestructive testing fields, and in particular to lumber quality detecting system.
Background technology
China's Wood demand is big, and rotten, empty, tree knot, crackle etc. can influence the intensity and moisture content of timber, then shadow
The use for ringing timber, to efficiently use timber resources, it is necessary to the quality of timber is detected, it is made to generate maximum economy
Benefit.
The related detecting method of the prior art be measure on stress pulse method, stress wave by be tested timber speed with measured and monitored the growth of standing timber
Expect that density is related with the material resources relationship of elasticity modulus, detection stress wave establishes corresponding relation in the transmission speed of tested timber, can
Judge lumber quality, its shortcoming is that：Stress wave is by artificially tapping generation, and the generation of the stress wave has randomness, with operation
The percussion strength of personnel, angle, contact area etc. are related, these uncertain factors can influence testing result, influence to timber
The judgement of quality.
Utility model content
The utility model provides lumber quality detecting system, solves the problems, such as that accuracy in detection of the existing technology is low.
The utility model solves the above problems by the following technical programs：
Lumber quality detecting system, including it is speed measuring module, Weighing module, width detection module, length detection module, aqueous
Measure detection module and controller module；The speed measuring module includes mainly ultrasonic transmitter and ultrasonic receiver；It is described
Ultrasonic transmitter sends out ultrasonic signal under the control of controller module, and the ultrasonic signal passes through the width of timber to be measured
Later, it is transmitted to ultrasonic receiver；The signal that the ultrasonic receiver receives is input in controller module；The title
Molality block includes at least four weighing sensor, and each weighing sensor is mounted on 4 feet of external weighting platform, the pressure letter detected
It number is input in controller module；The width detection module includes mainly 2 rotary encoders, and the encoder is mounted on outer
Portion surveys on wide device, when timber to be measured surveys wide device by outside, struts 2 rotary encoders, 2 rotary encoders induce respectively
Rotational angle, this 2 rotational angle signals are separately input into controller module；The length detection module is photo-electric position
The output signal of displacement sensor, the optical displacement sensor is input in controller module；The water content detection module
Include mainly gamma-ray burster and gamma ray detection head；The gamma-ray burster is under the control of controller module
It sends out gamma rays and is transmitted to gamma ray detection head after the gamma rays passes through the length of timber to be measured；The gamma rays
The output signal of detecting head is input in controller module.
Further, the ultrasonic transmitter includes at least four transmitting terminal energy converter, the ultrasonic receiver packet
At least four receiving terminal energy converter is included；The transmitting terminal energy converter is identical as the quantity of receiving terminal energy converter, each transmitting terminal
Array transducers are in the side of external crawler belt, and each receiving terminal array transducers are in the other side of external crawler belt, the transmitting
Holding energy converter, the line of receiving terminal energy converter is vertical with the length of timber to be measured therewith.
Further, the ultrasonic receiver further includes amplifying circuit, bandwidth-limited circuit, automatic gain amplification electricity
Road, envelope detection circuit, thresholding comparison circuit；The output end of each receiving terminal energy converter is filtered through pre-amplification circuit, band logical
It is connected to controller module after the circuit of wave, automatic gain amplifying circuit；The output end of the automatic gain amplifying circuit also passes through
It is connected in controller module after envelope detection circuit, thresholding comparison circuit.
Further, the water content detection module further includes amplifying circuit and integrating circuit；The gamma ray detection
The output signal of head is input to after amplifying circuit, integrating circuit in controller module.
Further, further include keyboard setup module；The output end of the keyboard setup module is connect with controller module.
Further, further include display module；The display module is connect with controller module.
Compared with prior art, there are following features：
1, speed measuring module is set, the transmission speed of ultrasonic wave in wood is measured, setting Weighing module measures wood weight,
Test width detection module and length detection module detect the width and length of timber respectively, can be obtained by weight, length, width
The averag density for taking timber can get the intensity of timber in conjunction with the transmission speed of ultrasonic wave in wood, be penetrated by detecting gamma
The spread speed of line in wood can get the moisture content of timber, and the utility model provides detection module, be intensity and moisture content
Calculating data basis is provided, can judge lumber quality from intensity and moisture content, improve quality testing accuracy；
2, the signal that gamma ray detection head receives is obtained through being input in controller module again after amplifying, integrating
More accurate speed signal can obtain more accurate moisture content, can be more acurrate to the judgement of quality；
3, the shape of timber can be arranged in user by keyboard setup module, such as round or rectangular, and moisture content can also be arranged
It is provided conveniently for the quality divided rank of timber with the reference point of intensity convenient for comparing actual value and reference point；
Description of the drawings
Fig. 1 is the utility model structural principle block diagram.
Specific implementation mode
The utility model is described in further detail with reference to embodiments, but the utility model is not limited to these implementations
Example.
Lumber quality detecting system, including it is speed measuring module, Weighing module, width detection module, length detection module, aqueous
Measure detection module and controller module；The speed measuring module includes mainly ultrasonic transmitter and ultrasonic receiver；It is described
Ultrasonic transmitter sends out ultrasonic signal under the control of controller module, and the ultrasonic signal passes through the width of timber to be measured
Later, it is transmitted to ultrasonic receiver；The signal that the ultrasonic receiver receives is input in controller module；The title
Molality block includes at least four weighing sensor, and each weighing sensor is mounted on 4 feet of external weighting platform, the pressure letter detected
It number is input in controller module；The width detection module includes mainly 2 rotary encoders, and the encoder is mounted on outer
Portion surveys on wide device, when timber to be measured surveys wide device by outside, struts 2 rotary encoders, 2 rotary encoders induce respectively
Rotational angle, this 2 rotational angle signals are separately input into controller module；The length detection module is photo-electric position
The output signal of displacement sensor, the optical displacement sensor is input in controller module；The water content detection module
Include mainly gamma-ray burster and gamma ray detection head；The gamma-ray burster is under the control of controller module
It sends out gamma rays and is transmitted to gamma ray detection head after the gamma rays passes through the length of timber to be measured；The gamma rays
The output signal of detecting head is input in controller module.
The circuit structure of the utility model realizes that the outside mechanical structure includes mainly carrying out dependent on external mechanical structure
Band, weighting platform, surveys wide device at motor.Motor drives caterpillar drive, and crawler belt, which send timber to be measured to weighting platform, to be tested the speed, is weighed, surveyed
Wide, survey length, measured moisture content, weighting platform is taken away after detection by timber to be measured.It, need to be by surveying wide device to be measured in detection process
Timber carries out width measurement, the width device be equipped with for timber to be measured by channel, be hung with 2 measuring rods on channel, measure
One end of bar is hung on a passage by movable part, and the other end of measuring rod is fixed with rotary encoder, and timber to be measured is by logical
When road, measuring rod is strutted, rotary encoder deviates also with strutting for measuring rod, what 2 rotary encoders induced
The corresponding width of deviation angle, the as width of timber, timber completely by surveying wide device when, under the effect of gravity, measuring rod and
Rotary encoder returns to the former state perpendicular to ground.If timber is cylindric, which corresponds to the diameter of wood cross section.
Speed measuring module includes mainly ultrasonic transmitter and ultrasonic receiver, and the ultrasonic transmitter includes at least
4 transmitting terminal energy converters, the ultrasonic receiver include at least four receiving terminal energy converter；The transmitting terminal energy converter with
The quantity of receiving terminal energy converter is identical, and each transmitting terminal array transducers are changed in the side of external crawler belt, each receiving terminal
Can device be arranged in the other side of external crawler belt, the transmitting terminal energy converter line of receiving terminal energy converter and timber to be measured therewith
It is long vertical.Controller module generates square wave, and transmitting terminal energy converter generates the ultrasonic wave of different frequency, and the ultrasonic wave of different frequency exists
Spread speed in same medium is identical, and such as timber to be measured has rotten, empty, tree knot, crackle and other issues, and each receiving terminal changes
Can the signal that obtains of device can difference, that is, the quality of timber to be measured can be reflected to a certain extent by testing the speed.
Further, the ultrasonic receiver further includes amplifying circuit, bandwidth-limited circuit, automatic gain amplification electricity
Road, envelope detection circuit, thresholding comparison circuit；The output end of each receiving terminal energy converter is filtered through pre-amplification circuit, band logical
It is connected to controller module after the circuit of wave, automatic gain amplifying circuit；The output end of the automatic gain amplifying circuit also passes through
It is connected in controller module after envelope detection circuit, thresholding comparison circuit.
It is input in controller module, contributes to next in progress again after the reception signal for receiving energy converter is improved
Step operation and offer more accurate signal when judging.Decaying of the ultrasonic wave in timber to be measured is very big, different length it is to be measured
The signal that plank receives can be different, therefore, the amplification factor of amplifying circuit, the utility model set with longest timber to be measured
Mainly realize that amplification factor is up to 2000 times by triode and operational amplifier.Bandwidth-limited circuit is 4 rank active power filterings
Device can inhibit unwanted frequency signal by the signal of effective frequency, according to the corresponding frequency of receiving terminal energy converter, adjust circuit
In resistance, capacitance, can accordingly realize filtering.Automatic gain amplifying circuit is cascade amplifier, in the control of controller module
Under system, amplification factor is equivalent to the ultrasonic signal of decaying carrying out secondary amplification up to 8000.Envelope detection circuit is mainly sharp
Signal extraction is completed with the unilateal conduction characteristic of diode and the RC charging processes of detection load.Thresholding comparison circuit is mainly
Threshold compataror.
Weighing module includes at least four weighing sensor, and each weighing sensor is mounted on 4 feet of weighting platform, weighting platform is supportted
It rises.User can increase weighing sensor according to demand, to obtain more delicate data.
The length detection module is optical displacement sensor, and the output signal of the optical displacement sensor inputs
Into controller module.In the centre position of weighting platform, optical displacement sensor is set, when thering is timber to pass through, without luminous flux,
The displacement of timber is obtained by luminous flux, which corresponds to the length of timber.
The water content detection module includes gamma-ray burster, gamma ray detection head, amplifying circuit, integral electricity
Road；After gamma-ray burster sends out gamma rays, after the length for passing through timber to be measured, it is transmitted to gamma ray detection head, gamma
The reception signal of X-ray detection X head is input to after amplifying circuit, integrating circuit in controller module.Gamma rays is passed through and is waited for
When surveying timber, the water in timber can absorb gamma rays, cause the transmitted intensity through timber to change, gamma ray detection
The signal that head receives can embody the water content information of timber to be measured, and the signal received through inputting again after amplifying, integrating
Into controller module, processed signal more can accurately reflect water content.
It further include keyboard setup module；The output end of the keyboard setup module is connect with controller module.User can be
Log shapes, intensity reference value, moisture content reference value etc. is arranged in Keysheet module.
It further include display module；The display module is connect with controller module.Ginseng for showing log shapes, intensity
Examine value and actual value, the reference value of moisture content and actual value etc..
Computer program involved by above technical scheme is the prior art, and simple calculations controls and compares, is not present
The improvement that the prior art is carried out.
Claims (6)
1. lumber quality detecting system, it is characterised in that：
Including speed measuring module, Weighing module, width detection module, length detection module, water content detection module and controller
Module；
The speed measuring module includes mainly ultrasonic transmitter and ultrasonic receiver；The ultrasonic transmitter is in controller mould
Ultrasonic signal is sent out under the control of block, after the ultrasonic signal passes through the width of timber to be measured, is transmitted to ultrasonic wave reception
Device；The signal that the ultrasonic receiver receives is input in controller module；
The Weighing module includes at least four weighing sensor, and each weighing sensor is mounted on 4 feet of external weighting platform, detection
To pressure signal be input in controller module；
The width detection module includes mainly 2 rotary encoders, and the encoder is mounted on the wide device of external survey, wood to be measured
When material is by external survey width device, 2 rotary encoders are strutted, 2 rotary encoders induce respective rotational angle, this 2
Rotational angle signal is separately input into controller module；
The length detection module is optical displacement sensor, and the output signal of the optical displacement sensor is input to control
In device module processed；
The water content detection module includes mainly gamma-ray burster and gamma ray detection head；The gamma ray emission
Device sends out gamma rays under the control of controller module and is transmitted to gamma after the gamma rays passes through the length of timber to be measured
X-ray detection X head；The output signal of the gamma ray detection head is input in controller module.
2. lumber quality detecting system according to claim 1, it is characterised in that：
The ultrasonic transmitter includes at least four transmitting terminal energy converter, and the ultrasonic receiver includes that at least four connects
Receiving end energy converter；The transmitting terminal energy converter is identical as the quantity of receiving terminal energy converter, and each transmitting terminal array transducers exist
The side of external crawler belt, each receiving terminal array transducers are in the other side of external crawler belt, and the transmitting terminal energy converter is therewith
The line of receiving terminal energy converter is vertical with the length of timber to be measured.
3. lumber quality detecting system according to claim 2, it is characterised in that：
The ultrasonic receiver further includes amplifying circuit, bandwidth-limited circuit, automatic gain amplifying circuit, envelope detection electricity
Road, thresholding comparison circuit；Circuit, automatic of the output end of each receiving terminal energy converter through pre-amplification circuit, bandpass filtering
Controller module is connected to after gain amplifying circuit；The output end of the automatic gain amplifying circuit also through envelope detection circuit,
It is connected in controller module after thresholding comparison circuit.
4. lumber quality detecting system according to claim 1, it is characterised in that：
The water content detection module further includes amplifying circuit and integrating circuit；The output signal of the gamma ray detection head passes through
After amplifying circuit, integrating circuit, it is input in controller module.
5. lumber quality detecting system according to claim 1, it is characterised in that：It further include keyboard setup module；It is described
The output end of keyboard setup module is connect with controller module.
6. lumber quality detecting system according to claim 1, it is characterised in that：It further include display module；The display
Module is connect with controller module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820364954.4U CN207963950U (en) | 2018-03-16 | 2018-03-16 | Lumber quality detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820364954.4U CN207963950U (en) | 2018-03-16 | 2018-03-16 | Lumber quality detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207963950U true CN207963950U (en) | 2018-10-12 |
Family
ID=63743943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820364954.4U Expired - Fee Related CN207963950U (en) | 2018-03-16 | 2018-03-16 | Lumber quality detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207963950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896375A (en) * | 2020-07-16 | 2020-11-06 | 燕山大学 | Method and system for determining bearing characteristics of skid |
-
2018
- 2018-03-16 CN CN201820364954.4U patent/CN207963950U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111896375A (en) * | 2020-07-16 | 2020-11-06 | 燕山大学 | Method and system for determining bearing characteristics of skid |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181012 Termination date: 20190316 |