CN201508302U - Tree age non-destructive measuring device based on stress wave technique - Google Patents
Tree age non-destructive measuring device based on stress wave technique Download PDFInfo
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- CN201508302U CN201508302U CN2009201923704U CN200920192370U CN201508302U CN 201508302 U CN201508302 U CN 201508302U CN 2009201923704 U CN2009201923704 U CN 2009201923704U CN 200920192370 U CN200920192370 U CN 200920192370U CN 201508302 U CN201508302 U CN 201508302U
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Abstract
The utility model relates to a device capable of non-destructively measuring the age of living trees, and aims to provide a device with the characteristics of high measuring precision, high detection efficiency and no radiation, and convenient use and lower cost. The technical scheme is that: the tree age non-destructive measuring device based on the stress wave technique comprises two bolts, a pulse hammer, a starting sensor, a terminating sensor and a detection system, wherein the bolts are used for being embedded in a measured tree, and the pulse hammer is used for striking the bolts; and the starting sensor and the terminating sensor are respectively and electrically connected with the bolts by leads, and the detection system is respectively communicated with the starting sensor and the terminating sensor by data cables. The detection system is of a waveform analyzer.
Description
Technical field
The utility model relates to a kind of measurement mechanism, especially can carry out the device of nondestructive measurement to the standing tree age of living.
Background technology
Ancient and well-known trees not only have greening and are worth, and are lived priceless treasure and historical relic sample alive, are the witness and the keeper of physical environment transition.Simultaneously, ancient tree changes naturally to research weather, water and soil, air over the past thousands of years etc. important historical data value.Ancient tree not only has certain economic and is worth, and also has the ecological value, aesthetic value and research value.
At present, popular in the world trees age determination method is divided into two big classes by its sample mode.The first kind is the method that need take a sample from trees, as annual ring intersection determination method, carbon 14 determination methods etc., need analyze from the inner tree core product that take out of trees from utilizing growth cone or other instrument.This class methods advantage is to measure more exactly the age of trees, but operating process is complicated, and workload is big, and can cause to a certain degree damage to trees.Second class methods do not need to take a sample from trees, as investigation and interview method, CT scan method, limb analytic approach etc.The CT scan rule is a kind of rays method, and trees are had certain influence, and cost is higher.Investigation estimation method mainly is by on-the-spot investigation, visit the local resident, consult data such as geography and weather, carry out with other sample the age that mode such as analogy is inferred trees.The limb analytic approach mainly is by investigating tree limb, wait the age of calculating major branch according to annual shoot, biennial branch, 3 years living branches, inferring the general age of tree thus.Being of limited application of second class methods decides often to have uncertain error in the annual bearing, and the measurement result reliability is not high.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of age of tree damage-free measuring apparatus is provided, this device should have measuring accuracy height, detection efficiency high and, radiationless characteristics, and easy to use, cost is lower.
The technical solution adopted in the utility model is: based on the age of tree damage-free measuring apparatus of stress wave technology, comprise that two screws that are used for being embedded into measured tree, one are used to knock the pulse hammer of screw, the initial sensor that is electrically connected with described screw by lead respectively and stop sensor and connect initial sensor by data cable respectively and stop the detection system of sensor.
Described detection system is a waveform analyzer.
The course of work of the present utility model is:
One, two screws is embedded in the corresponding both sides of measured tree respectively;
Two, open the detection system power switch, test environment is set, comprise the isoparametric setting of distance (distance between the screw) between trees kind and title, cycle tests number, density, the sensor.Test environment after setting completed, system carries out the test wait stage;
Three, the tester uses pulse hammer to knock the initiating terminal screw, produces stress wave, makes it at the timber internal communication.Initial sensor acquisition start signal, the detection trigger system picks up counting, after the termination sensor receives stress wave signal, the detection trigger system stops timing, obtain travel-time and the speed of stress wave in timber inside thus, the communication process of the corresponding Reeb of the software of wave form analysis simultaneously signal is analyzed.Detection system will calculate Spreading Velocity of Stress Wave automatically, obtain the measured value of modulus of elasticity of wood thus, and determine the age of trees.
The beneficial effects of the utility model are: the measurement mechanism that is provided can be by analyzing communication process and the wave form varies situation of stress wave in the standing tree xsect of living, and wave form varies rule and tree ring combined, detection system is calculated the age of tree of efficient standing tree then.Realized that not only the age of ancient and well-known trees measures automatically, and the health monitoring that the age of tree can be measured with trees combine, reduce the cost of whole nondestructive detection system, and improved the precision that the age of tree is measured.In addition, this measurement mechanism has also that speed is fast, antijamming capability is strong, measure accuracy than characteristics such as height, and measured tree is not produced injury.
Description of drawings
Fig. 1 is a user mode synoptic diagram of the present utility model.
Embodiment
Main thought of the present utility model is as follows:
Utilize pulse hammer to knock trees, make the wave propagation of the inner generation of trees stress, when stress wave signal runs into the annual ring edge, because the wooden density interphase on annual ring both sides, slight change will take place in the attenuation degree of stress wave signal, cause waveform to change; So can determine the quantity of annual ring by analyzing the stress wave waveform feature.The principle of work that is based on the age of tree non-destructive determination state of stress wave technology shown in Figure 1.
Based on the age of tree damage-free measuring apparatus of stress wave technology, comprise two screws that are used for being embedded into measured tree 1 (be initial screw 2 and stop screw 7), the initial sensor 4 that is electrically connected with described screw by lead respectively and stop sensor 6, one being used to knock screw with the pulse hammer 3 of generation pulsating wave and the detection system 5 of connecting initial sensor 4 and termination sensor 6 respectively by data cable.
Described detection system preferred wave shape form analyser; Utilize wave form analysis software counter stress wave-wave shape to analyze and handle, thereby can obtain the age of measured tree.
The equal buyables of all components and parts such as pulse hammer described in the utility model, sensor, waveform analyzer.
Claims (2)
1. based on the age of tree damage-free measuring apparatus of stress wave technology, it is characterized in that this device comprises two screws that are used for being embedded into measured tree, pulse hammer (3) that one is used to knock screw, the initial sensor (4) that is electrically connected with described screw by lead respectively and stops sensor (6) and connect initial sensor by data cable respectively and stop the detection system (5) of sensor.
2. the age of tree damage-free measuring apparatus based on the stress wave technology according to claim 1 is characterized in that described detection system (5) is a waveform analyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201923704U CN201508302U (en) | 2009-08-24 | 2009-08-24 | Tree age non-destructive measuring device based on stress wave technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201923704U CN201508302U (en) | 2009-08-24 | 2009-08-24 | Tree age non-destructive measuring device based on stress wave technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201508302U true CN201508302U (en) | 2010-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201923704U Expired - Fee Related CN201508302U (en) | 2009-08-24 | 2009-08-24 | Tree age non-destructive measuring device based on stress wave technique |
Country Status (1)
| Country | Link |
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| CN (1) | CN201508302U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338776A (en) * | 2011-08-25 | 2012-02-01 | 浙江农林大学 | Method for measuring propagation time of stress wave in wood and nondestructive test system |
| CN105467012A (en) * | 2015-11-23 | 2016-04-06 | 江南大学 | Method for detecting defect positions on radial sections of trees |
| CN106093048A (en) * | 2016-08-01 | 2016-11-09 | 北京市园林科学研究院 | A kind of determine the method in year for tree ring and realize the device of the method |
| CN107917980A (en) * | 2017-11-14 | 2018-04-17 | 河南科技大学 | Identify biomarker, acquisition methods and its application of the elm age of tree |
-
2009
- 2009-08-24 CN CN2009201923704U patent/CN201508302U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338776A (en) * | 2011-08-25 | 2012-02-01 | 浙江农林大学 | Method for measuring propagation time of stress wave in wood and nondestructive test system |
| CN105467012A (en) * | 2015-11-23 | 2016-04-06 | 江南大学 | Method for detecting defect positions on radial sections of trees |
| CN105467012B (en) * | 2015-11-23 | 2018-06-26 | 江南大学 | A kind of method for detecting defective locations on trees radial longitudinal section |
| CN106093048A (en) * | 2016-08-01 | 2016-11-09 | 北京市园林科学研究院 | A kind of determine the method in year for tree ring and realize the device of the method |
| CN106093048B (en) * | 2016-08-01 | 2019-02-05 | 北京市园林科学研究院 | It is a kind of to determine the method in year for tree ring and realize the device of this method |
| CN107917980A (en) * | 2017-11-14 | 2018-04-17 | 河南科技大学 | Identify biomarker, acquisition methods and its application of the elm age of tree |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20100616 Termination date: 20180824 |