CN206523115U - A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time - Google Patents

A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time Download PDF

Info

Publication number
CN206523115U
CN206523115U CN201621120744.8U CN201621120744U CN206523115U CN 206523115 U CN206523115 U CN 206523115U CN 201621120744 U CN201621120744 U CN 201621120744U CN 206523115 U CN206523115 U CN 206523115U
Authority
CN
China
Prior art keywords
detection
shell
fixedly connected
steel wire
wire rope
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn - After Issue
Application number
CN201621120744.8U
Other languages
Chinese (zh)
Inventor
陶靖鑫
顾嵩琦
李盟
顾海荣
陆信红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuxi Welcome Grain Networking Co Ltd
Original Assignee
Wuxi Welcome Grain Networking Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuxi Welcome Grain Networking Co Ltd filed Critical Wuxi Welcome Grain Networking Co Ltd
Priority to CN201621120744.8U priority Critical patent/CN206523115U/en
Application granted granted Critical
Publication of CN206523115U publication Critical patent/CN206523115U/en
Withdrawn - After Issue legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

The utility model discloses a kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time, including detection means, the detection means includes detection shell, control panel is installed with the top of the detection shell, pressure sensor is installed with the top of the detection shell inner cavity, the top of the detection shell inner cavity and guide rod is fixedly connected with by connecting spring positioned at the both sides of pressure sensor, the bottom of the guide rod runs through the bottom of detection shell and extends to the outside of detection shell, and the bottom of the guide rod is fixedly connected with rubber block.The automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time, pass through the improvement of detection means and decompressor, things system is allowd to access the platform of the country, avoid because detection means is damaged caused by steel wire rope level of stretch tension, avoid simultaneously because detection error is excessive caused by steel wire rope level of stretch excessively pine, by the improvement of lap counter, the precision of detection is added.

Description

A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time
Technical field
The utility model is related to Forestry Investigation technical field, specially a kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time.
Background technology
Trees radial variations directly react the physiology shape of trees from growth and the change of cylinder water content, this change On the one hand the influence of condition and environment to trees, measurement trees radial variations can understand the growing state of trees, the opposing party at any time Face can study the environmental condition of influence arboreal growth, therefore measurement trees radial variations have weight in theory and application research Want meaning.
In order to preferably manage the forest reserves and carry out forestry research work, the forestry authorities of China and Forestry Forest will be carried out and investigated, but forestry this time-honored industry is also still carried out using the manual type of most original Forest survey-labor workload is big, measurement result is more extensive, working environment is severe, and Forestry Investigation is above all measured The accumulation of forest.
Traditional automatic real-time diameter of a cross-section of a tree trunk 1.3 meters above the ground detection things system, it is impossible to the domestic platform of access, makes troubles to Forestry Investigation, The level of stretch of steel wire rope is difficult to control to, is easily occurred because detection means is damaged caused by steel wire rope level of stretch tension, Operating efficiency is reduced while increase cost, while easily occurring missing due to detecting caused by steel wire rope level of stretch excessively pine Difference is excessive, reduces the reliability of detection data, and the use to user is made troubles.
Utility model content
(1) technical problem solved
In view of the shortcomings of the prior art, the utility model provides a kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time, solves The problem of being difficult to control to steel wire rope level of stretch.
(2) technical scheme
To realize object above, the utility model is achieved by the following technical programs:A kind of automatic diameter of a cross-section of a tree trunk 1.3 meters above the ground inspection in real time Things system, including detection means are surveyed, the detection means includes being installed with the top of detection shell, the detection shell Be installed with pressure sensor at the top of control panel, the detection shell inner cavity, the top of the detection shell inner cavity and Guide rod is fixedly connected with by connecting spring positioned at the both sides of pressure sensor, the bottom of the guide rod is outer through detection The bottom of shell and the outside for extending to detection shell, the bottom of the guide rod are fixedly connected with rubber block, the rubber block Top and the detection bar being equipped with pressure sensor is fixedly connected between two guide rods, the detection shell Both sides have been fixedly connected with connection rubber, and side of the connection rubber away from detection shell is connected with stretching by rotating shaft Rubber, the one end of the stretching rubber away from connection rubber, which is fixedly connected with connecting rod, the connecting rod, is fixedly connected with steel Cord, the one end of the steel wire rope away from connecting rod is fixedly connected with decompressor, and the right side of the decompressor is fixedly mounted There is processor.
The decompressor includes being fixedly connected outside restricted shell, the limitation at the top of control cabinet, the control cabinet Flexible glue skin is fixedly connected with the top of shell, the left side of the control box cavity is fixedly connected sequentially has signal condition mould from top to bottom Block and signal transmitting and receiving module, the bottom of the control box cavity are fixedly connected with motor, and the output shaft of the motor passes through shaft coupling Device is fixedly connected with rotary shaft, and the top of the rotary shaft runs through the top of control cabinet and extends to the inside of limitation shell, institute State the surface of rotary shaft and be arranged with reel positioned at the inner chamber of limitation shell, one end of the steel wire rope is run through limitation shell and prolonged The inside of limitation shell is extended, one end that the steel wire rope is located at limitation shell inner cavity is fixedly connected with the surface of reel, described Control the top of box cavity and be arranged with lap counter positioned at the surface of rotary shaft.
The lap counter includes retainer ring, and the top of the retainer ring is fixedly connected with the inwall of control cabinet, described solid Determine to be installed with brush at the top of ring, resistance ring is provided with the retainer ring, the resistance ring is sheathed on the table of rotary shaft Face, the brush is contacted with the surface of resistance ring, and collets are provided with the resistance ring.
The output end of the output end of the pressure sensor, the output end of lap counter and control panel with processor Input is connected, and the output end of the processor and the input of motor are connected, and the processor and Signal-regulated kinase are two-way Connection, the output end of the processor is connected with the input of signal transmitting and receiving module, and the input of the signal transmitting and receiving module leads to The input for crossing gateway and communication platform is connected.
It is preferred that, the surface of the guide rod is arranged restraining position ring block, and the side of spacing ring is with detecting that the inwall of shell connects Touch.
It is preferred that, the top of the rotary shaft is inlaid with movable balls, and movable balls are contacted with the bottom of flexible glue skin.
It is preferred that, the both sides of the limitation shell and rubber ring is arranged with the steel wire rope.
(3) beneficial effect
The utility model provides a kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time.Possesses following beneficial effect:
(1), the automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time, passes through the improvement of detection means and decompressor so that Internet of Things System can access the platform of the country, facilitate the investigation of forestry, the level of stretch of steel wire rope is controlled well, it is to avoid by Detection means is damaged caused by steel wire rope level of stretch tension, and operating efficiency is improved while reducing cost, is kept away simultaneously Exempt from, because detection error is excessive caused by steel wire rope level of stretch excessively pine, to add the reliability of detection data, facilitate The use of user.
(2), the automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time, by the improvement of lap counter, adds the precision of detection, Operating efficiency is added while reducing detection error.
Brief description of the drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of the utility model detection means;
Fig. 3 is the structural representation of the utility model decompressor;
Fig. 4 is the structural representation of the utility model lap counter;
Fig. 5 is the utility model structural principle block diagram.
In figure:1 detection means, 11 control panels, 12 pressure sensors, 13 connecting springs, 14 guide rods, 15 spacing rings, 16 detection shells, 17 connection rubber, 18 detection bars, 19 rubber blocks, 2 connecting rods, 3 steel wire ropes, 4 decompressors, 401 movable balls, 402 flexible glue skins, 403 reels, 404 rubber rings, 405 limitation shells, 406 rotary shafts, 407 lap counters, 4071 brushes, 4072 electricity Balk ring, 4073 retainer rings, 4074 collets, 408 Signal-regulated kinases, 409 motors, 410 signal transmitting and receiving modules, 411 control cabinets, 5 stretching rubber, 6 processors, 7 gateways, 8 communication platforms.
Embodiment
Described embodiment is only a part of embodiment of the utility model, rather than whole embodiments.Based on this Embodiment in utility model, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its His embodiment, belongs to the scope of the utility model protection.
Fig. 1-5 are referred to, the utility model provides a kind of technical scheme:A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time, Including detection means 1, detection means 1 includes detection shell 16, and the top of detection shell 16 is installed with control panel 11, examined Survey and pressure sensor 12 is installed with the top of the inner chamber of shell 16, pressure sensor 12 is used for the stretching journey for detecting steel wire rope 3 Degree, detects the top of the inner chamber of shell 16 and is fixedly connected with guiding by connecting spring 13 positioned at the both sides of pressure sensor 12 Bar 14, guide rod 14 is used for the position for limiting rubber block 19 and detection bar 18, and the surface of guide rod 14 is arranged restraining position ring block 15, and The side of spacing ring 15 is with detecting that the inwall of shell 16 is contacted, and the bottom of guide rod 14 is through the bottom of detection shell 16 and extension To the outside for detecting shell 16, the bottom of guide rod 14 is fixedly connected with rubber block 19, the top of rubber block 19 and positioned at two The detection bar 18 being equipped with pressure sensor 12 is fixedly connected between guide rod 14, detects that the both sides of shell 16 are fixed Connection rubber 17 is connected with, the use of connection rubber 17 adds the scope of detection so that the things system can detect any The trees of type, side of the connection rubber 17 away from detection shell 16 is connected with stretching rubber 5 by rotating shaft, stretches rubber 5 one end away from connection rubber 17, which are fixedly connected with connecting rod 2, connecting rod 2, is fixedly connected with steel wire rope 3, and steel wire rope 3 is remote One end of connecting rod 2 is fixedly connected with decompressor 4, and the right side of decompressor 4 is installed with processor 6.
Decompressor 4 includes control cabinet 411, and the top of control cabinet 411 is fixedly connected with restricted shell 405, limits shell 405 both sides and rubber ring 404 is arranged with the steel wire rope 3, the top of limitation shell 405 is fixedly connected with flexible glue skin 402, The left side of the inner chamber of control cabinet 411 is fixedly connected sequentially from top to bottom Signal-regulated kinase 408 and signal transmitting and receiving module 410, control The bottom of the inner chamber of case 411 processed is fixedly connected with motor 409, and the output shaft of motor 409 is fixedly connected with rotary shaft by shaft coupling 406, the top of rotary shaft 406 is inlaid with movable balls 401, and movable balls 401 are contacted with the bottom of flexible glue skin 402, movable balls 401 For reducing the frictional force between rotary shaft 406 and flexible glue skin 402, the top of control cabinet 411 is run through simultaneously in the top of rotary shaft 406 Extend to limitation shell 405 inside, the surface of rotary shaft 406 and positioned at limitation shell 405 inner chamber be arranged with reel 403, One end of steel wire rope 3 runs through limitation shell 405 and extends to the inside of limitation shell 405, and steel wire rope 3 is located at limitation shell 405 One end of inner chamber is fixedly connected with the surface of reel 403, the top of the inner chamber of control cabinet 411 and the surface set for being located at rotary shaft 406 Provided with lap counter 407, lap counter 407 is used for the effective length change for judging steel wire rope 3, and the change of the diameter of a cross-section of a tree trunk 1.3 meters above the ground is judged with this.
Lap counter 407 includes retainer ring 4073, and the top of retainer ring 4073 is fixedly connected with the inwall of control cabinet 411, The top of retainer ring 4073, which is installed with brush 4071, retainer ring 4073, is provided with resistance ring 4072,4072 sets of resistance ring Located at the surface of rotary shaft 406, brush 4071 is contacted with the surface of resistance ring 4072, and collets are provided with resistance ring 4072 4074, the things system small volume is easy to carry, simple in construction, is easy to production and manufacture.
The output end of the output end of pressure sensor 12, the output end of lap counter 407 and control panel 11 with processing The input connection of device 6, the output end of processor 6 is connected with the input of motor 409, processor 6 and Signal-regulated kinase 408 It is bi-directionally connected, the output end of processor 6 is connected with the input of signal transmitting and receiving module 410, the input of signal transmitting and receiving module 410 It is connected by gateway 7 with the input of communication platform 8.
During work, stretching rubber 5 is sheathed on trunk, rotated by the controlled motor 409 of control panel 11, motor 409 Rotation drive rotary shaft 406 rotation so that steel wire rope 3 is stretched, when the degree that draws high of steel wire rope 3 reaches standard During value, pressure sensor 12 is toggled and sends stop signal to processor 6, and processor 6 receives stop signal preprocessor 6 Stop the rotation of motor 409, with the increase of the diameter of a cross-section of a tree trunk 1.3 meters above the ground, the pulling force increase that steel wire rope 3 is subject to, when pressure sensor 12 is toggled When, the controlled motor 409 of processor 6 is rotated backward, so that the pulling force of steel wire rope 3 is maintained in setting range, processor 6 leads to The change for crossing the effective resistance in circuit of resistance ring 4072 judges the change of tree breast-height diameter and changing value is sent into signal condition Module 408, Signal-regulated kinase 408 will send processor 6 after Data Integration, the data after integration are sent to letter by processor 6 Data after integration are sent to communication platform 8 by gateway 7, carried out with this by number transceiver module 410, signal transmitting and receiving module 410 Detection operation.
In summary, the automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time, by the improvement of detection means 16 and decompressor 4, Allow things system to access the platform of the country, facilitate the investigation of forestry, the stretching journey of steel wire rope 3 is controlled well Degree, it is to avoid because detection means 1 is damaged caused by the level of stretch tension of steel wire rope 3, work is improved while reducing cost Make efficiency, while avoiding because detection error is excessive caused by the level of stretch of steel wire rope 3 excessively pine, add detection data Reliability, facilitates the use of user.
Also, by the improvement of lap counter 407, the precision of detection is added, is increased while reducing detection error Operating efficiency.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment Intrinsic key element.In the absence of more restrictions.By sentence " including one ... the key element limited, it is not excluded that Also there is other identical element in the process including the key element, method, article or equipment ".Although have been shown and Embodiment of the present utility model is described, for the ordinary skill in the art, it is possible to understand that do not departing from this practicality These embodiments can be carried out with a variety of change, modification, replacement and modification, this practicality is new in the case of new principle and spirit The scope of type is defined by the appended claims and the equivalents thereof.

Claims (4)

1. a kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time, including detection means (1), it is characterised in that:The detection means (1) Including detection shell (16), control panel (11), the detection shell are installed with the top of the detection shell (16) (16) it is installed with pressure sensor (12) at the top of inner chamber, the top of described detection shell (16) inner chamber and is passed positioned at pressure The both sides of sensor (12) are fixedly connected with guide rod (14) by connecting spring (13), and the bottom of the guide rod (14) is run through The bottom of detection shell (16) and the outside for extending to detection shell (16), the bottom of the guide rod (14) is fixedly connected with glue Skin bit (19), the top of the rubber block (19) and is fixedly connected with and pressure sensor between two guide rods (14) (12) detection bar (18) being equipped with, the both sides of the detection shell (16) have been fixedly connected with connection rubber (17), described Side of the connection rubber (17) away from detection shell (16) is connected with stretching rubber (5), the stretching rubber by rotating shaft (5) one end away from connection rubber (17), which is fixedly connected with connecting rod (2), the connecting rod (2), is fixedly connected with steel wire rope (3), the one end of the steel wire rope (3) away from connecting rod (2) is fixedly connected with decompressor (4), the right side of the decompressor (4) Side is installed with processor (6);
The decompressor (4) includes being fixedly connected with restricted shell at the top of control cabinet (411), the control cabinet (411) (405) flexible glue skin (402), the left side of control cabinet (411) inner chamber, are fixedly connected with the top of the limitation shell (405) Being fixedly connected sequentially from top to bottom has Signal-regulated kinase (408) and signal transmitting and receiving module (410), in the control cabinet (411) The bottom of chamber is fixedly connected with motor (409), and the output shaft of the motor (409) is fixedly connected with rotary shaft by shaft coupling (406), the top of the rotary shaft (406) runs through the top of control cabinet (411) and extends to the inside of limitation shell (405), The surface of the rotary shaft (406) and positioned at limitation shell (405) inner chamber be arranged with reel (403), the steel wire rope (3) One end runs through limitation shell (405) and extends to the inside of limitation shell (405), and the steel wire rope (3) is located at limitation shell (405) one end of inner chamber is fixedly connected with the surface of reel (403), the top of control cabinet (411) inner chamber and positioned at rotate The surface of axle (406) is arranged with lap counter (407);
The lap counter (407) includes retainer ring (4073), and the top of the retainer ring (4073) is interior with control cabinet (411) Wall is fixedly connected, and is installed with brush (4071), the retainer ring (4073) and is set at the top of the retainer ring (4073) There is resistance ring (4072), the resistance ring (4072) is sheathed on the surface of rotary shaft (406), the brush (4071) and resistance ring (4072) collets (4074) are provided with surface contact, the resistance ring (4072);
The output end of the output end of the pressure sensor (12), the output end of lap counter (407) and control panel (11) is equal It is connected with the input of processor (6), the output end of the processor (6) is connected with the input of motor (409), the processing Device (6) is bi-directionally connected with Signal-regulated kinase (408), and the output end of the processor (6) is defeated with signal transmitting and receiving module (410) Enter end connection, the input of the signal transmitting and receiving module (410) is connected by gateway (7) with the input of communication platform (8).
2. a kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time according to claim 1, it is characterised in that:The guide rod (14) surface is arranged restraining position ring block (15), and the side of spacing ring (15) is contacted with the inwall of detection shell (16).
3. a kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time according to claim 1, it is characterised in that:The rotary shaft (406) top is inlaid with movable balls (401), and movable balls (401) are contacted with the bottom of flexible glue skin (402).
4. a kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time according to claim 1, it is characterised in that:The limitation shell (405) both sides and it is arranged with rubber ring (404) on steel wire rope (3).
CN201621120744.8U 2016-10-13 2016-10-13 A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time Withdrawn - After Issue CN206523115U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621120744.8U CN206523115U (en) 2016-10-13 2016-10-13 A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621120744.8U CN206523115U (en) 2016-10-13 2016-10-13 A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time

Publications (1)

Publication Number Publication Date
CN206523115U true CN206523115U (en) 2017-09-26

Family

ID=59888096

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621120744.8U Withdrawn - After Issue CN206523115U (en) 2016-10-13 2016-10-13 A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time

Country Status (1)

Country Link
CN (1) CN206523115U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106247902A (en) * 2016-10-13 2016-12-21 无锡迎谷物联网有限公司 A kind of detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground the most in real time
CN108154671A (en) * 2018-01-19 2018-06-12 中南林业科技大学 A kind of forest zone integrated information monitoring method and system based on Internet of Things
CN110411399A (en) * 2019-05-24 2019-11-05 刘建兴 A kind of planting intelligent monitor system based on big data
CN112985232A (en) * 2021-04-28 2021-06-18 唐源盛 Tool, system and method for quickly measuring breast diameter of forest tree

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106247902A (en) * 2016-10-13 2016-12-21 无锡迎谷物联网有限公司 A kind of detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground the most in real time
CN106247902B (en) * 2016-10-13 2018-12-21 上海市绿化管理指导站 A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time
CN108154671A (en) * 2018-01-19 2018-06-12 中南林业科技大学 A kind of forest zone integrated information monitoring method and system based on Internet of Things
CN110411399A (en) * 2019-05-24 2019-11-05 刘建兴 A kind of planting intelligent monitor system based on big data
CN112985232A (en) * 2021-04-28 2021-06-18 唐源盛 Tool, system and method for quickly measuring breast diameter of forest tree
CN112985232B (en) * 2021-04-28 2022-12-09 唐源盛 Tool, system and method for quickly measuring breast diameter of forest

Similar Documents

Publication Publication Date Title
CN206523115U (en) A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time
CN106761686A (en) Self-adapting type intelligence well depth measurement apparatus and measuring method
CN106247902B (en) A kind of automatic detection things system of the diameter of a cross-section of a tree trunk 1.3 meters above the ground in real time
CN206945653U (en) Air automatic monitoring device
CN1888383B (en) Deepwell depth and cable pulling winch metering device
CN205958536U (en) Portable indoor air quality detection device
CN205719070U (en) A kind of salt-soda soil crop growth environment real-time detecting system
CN203835461U (en) Chute turn monitor
CN206146937U (en) From bayonet unginned cotton regain tester
CN215727683U (en) Intelligent chlorophyll sensor
CN205665167U (en) Quality of water remote sensing measuring device
CN210338525U (en) Efficient smoke box strip shortage detection device
CN205477597U (en) Oil, natural gas well station data and image acquisition device
CN114295811A (en) Visual water and soil conservation detection device and detection method thereof
CN208672624U (en) A kind of soil monitoring device based on Internet of Things
CN208383493U (en) A kind of detection device suitable for ancient building consolidation process
CN106053781A (en) System and method utilizing metabolism of aquatic organisms to realize online environmental monitoring
CN205486742U (en) Remote control data acquisition transmission system based on RTU
CN206223914U (en) High-voltage transmission line insulator distributed electric field detector and detecting system
CN205280663U (en) Defects in timber nondestructive test device
CN202928841U (en) Water quality sampler
CN211927821U (en) Split type multichannel monitor terminal of historical relic body moisture content under extreme environment
CN217980240U (en) Wood volume measuring device
CN206556858U (en) A kind of fish hook stretching force detecting apparatus
CN205940647U (en) Novel environmental monitoring device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
AV01 Patent right actively abandoned
AV01 Patent right actively abandoned

Granted publication date: 20170926

Effective date of abandoning: 20181221