CN214410237U - Geological disaster real-time monitoring and early warning device based on Beidou - Google Patents

Geological disaster real-time monitoring and early warning device based on Beidou Download PDF

Info

Publication number
CN214410237U
CN214410237U CN202120638844.4U CN202120638844U CN214410237U CN 214410237 U CN214410237 U CN 214410237U CN 202120638844 U CN202120638844 U CN 202120638844U CN 214410237 U CN214410237 U CN 214410237U
Authority
CN
China
Prior art keywords
module
early warning
wall
beidou
warning device
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.)
Active
Application number
CN202120638844.4U
Other languages
Chinese (zh)
Inventor
邓维爱
钟培盛
彭文斌
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.)
Guangdong Bangsheng Beidou Technology Service Co Ltd
Original Assignee
Guangdong Bangsheng Beidou Technology Service 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 Guangdong Bangsheng Beidou Technology Service Co Ltd filed Critical Guangdong Bangsheng Beidou Technology Service Co Ltd
Priority to CN202120638844.4U priority Critical patent/CN214410237U/en
Application granted granted Critical
Publication of CN214410237U publication Critical patent/CN214410237U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Emergency Alarm Devices (AREA)

Abstract

The utility model discloses a real-time monitoring and early warning device for geological disasters based on Beidou, which comprises a monitoring device body, wherein two groups of T-shaped clamping blocks are symmetrically arranged on the inner wall of the upper end of a shield body, the T-shaped clamping blocks are movably clamped between the inner walls of a movable groove, the shield body can slide to the lower end in the transportation process, a sealing cover is closed, so that the ground cone is sealed, the accidental injury to workers is avoided, the safety in the installation process is improved, an infrared distance meter is installed at the upper end of a top plate, the tail end of the infrared distance meter is provided with a transmission line, a plate body for receiving laser is arranged at the far position of a mountain body, so that the change of the distance is monitored in real time by the infrared distance meter, the landslide condition of the mountain body is judged, an electromagnetic shielding layer is bonded on the outer wall of a landslide monitoring box body, and is a component made of conductive foam materials, the conductive foam has good shielding performance, can reflect and absorb when encountering radio waves, and has extremely high cost performance.

Description

Geological disaster real-time monitoring and early warning device based on Beidou
Technical Field
The utility model relates to a geological disasters monitoring technology field specifically is a geological disasters real-time supervision early warning device based on big dipper.
Background
Geological disasters refer to geological effects or phenomena formed under the action of natural or human factors, which cause losses to human life and property, and damage to the environment. The distribution change rule of geological disasters in time and space is not only limited by natural environment, but also related to human activities, and is often the result of interaction between human and the natural world. Natural disasters mainly caused by geological dynamic activities or abnormal geological environment. Under the action of the internal power, the external power or the artificial geological power, the earth generates abnormal energy release, material movement, deformation and displacement of rock and soil bodies, abnormal change of the environment and the like, and the phenomena or processes of harming human lives and properties, living and economic activities or destroying resources and environments on which human beings live and develop are generated.
At present, a monitoring device for landslide is usually fixed through a ground cone during installation, however, certain potential safety hazards exist in the process of device transportation and installation due to the sharpness of the ground cone, meanwhile, the landslide monitoring device cannot well monitor the whole landslide, and the monitoring device is easily interfered by electromagnetic signals, so that monitoring data are not accurate enough.
Therefore, we have provided a geological disaster real-time monitoring early warning device based on big dipper.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a geological disasters real-time supervision early warning device based on big dipper, through the cooperation of infrared distance meter, electromagnetic shield layer and protection casing to the problem that proposes in the above-mentioned background has been solved.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a geological disasters real-time supervision early warning device based on big dipper, including the monitoring devices body, the monitoring devices body is including placing the case, swing joint spare, maintain the door, fixed stabilizer blade, the roof, infrared distance meter, transmission line and through-hole, fixedly connected with swing joint spare on placing one side outer wall of case, swing joint spare's other end fixedly connected with maintains the door, the four corners department of placing the bottom of the case portion is the fixed stabilizer blade of fixedly connected with respectively, the top of placing the case is provided with the roof, infrared distance meter is installed to the upper end of roof, infrared distance meter's end is provided with the transmission line, the through-hole has been seted up to the upper end of roof, the through-hole extends to the inside of placing the case, and the transmission line runs through the through-hole setting.
Further, place the case and include landslide monitoring box body, single chip module, the WIFI module, power module, big dipper orientation module, storage module, signal processing module, laser rangefinder module and sensor receiving module, place the inside of case and placed landslide monitoring box body, the center department of landslide monitoring box body installs single chip module, single chip module's top is provided with WIFI module and power module, big dipper orientation module is installed on single chip module's right side, storage module is installed in single chip module's left side, single chip module's below is provided with signal processing module, laser rangefinder module and sensor receiving module.
Furthermore, an electromagnetic shielding layer is bonded on the outer wall of the landslide monitoring box body, and the electromagnetic shielding layer is a component made of a conductive foam material.
Further, fixed stabilizer blade includes stabilizer blade body and protection casing, and the activity is provided with the protection casing on the outer wall of stabilizer blade body bottom.
Further, the stabilizer blade body includes fixed column, mounting flange, ground awl, movable sleeve and activity groove, and the top fixedly connected with mounting flange of fixed column, and mounting flange pass through the bolt fastening and place the bottom of case, and the bottom of fixed column is provided with ground awl, is provided with the movable sleeve on the outer wall of fixed column bottom, and two sets of activity grooves have been seted up to the symmetry on the outer wall of movable sleeve.
Further, the protection casing includes guard shield body, T type fixture block, release button, activity hinge, closing cap and locking piece, and the symmetry is provided with two sets of T type fixture blocks on the inner wall of guard shield body upper end, and T type fixture block activity block is between the inner wall of activity groove, and the symmetry is provided with two sets of release buttons on the bottom lateral wall of guard shield body, and the bottom fixedly connected with activity hinge of guard shield body, fixedly connected with closing cap on the lateral wall of activity hinge is provided with the locking piece on the lateral wall of closing cap.
Further, the below of infrared distance measuring instrument is provided with two sets of connecting blocks, and the upper end fixedly connected with connecting axle of connecting block is provided with the damping axle between two connecting axles, and the upper end fixed connection of damping axle is in infrared distance measuring instrument's bottom.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model provides a geological disasters real-time supervision early warning device based on big dipper, be provided with the movable sleeve on the outer wall of fixed column bottom, two sets of movable grooves have been seted up to the symmetry on the outer wall of movable sleeve, the symmetry is provided with two sets of T type fixture blocks on the inner wall of guard shield body upper end, and T type fixture block activity block is between the inner wall of movable groove, the symmetry is provided with two sets of unblock button on the bottom lateral wall of guard shield body, the bottom fixedly connected with activity hinge of guard shield body, fixedly connected with closing cap on the lateral wall of activity hinge, be provided with the locking piece on the lateral wall of closing cap, at the in-process of transportation, can be with guard shield body landing to the lower extreme, close the closing cap, thereby seal ground awl, avoid causing the accidental injury to the staff, improve the security in the installation.
2. The utility model provides a geological disasters real-time supervision early warning device based on big dipper, infrared distance meter is installed to the upper end of roof, infrared distance meter's end is provided with the transmission line, the through-hole has been seted up to the upper end of roof, the through-hole extends to the inside of placing the case, and the transmission line runs through the through-hole setting, be provided with the plate body of receiving laser through the distant place at the massif, thereby change through infrared distance meter real-time supervision department distance, and then judge the condition of massif landslide, and in time report the early warning, monitoring effect is good, and can monitor massif whole, big dipper orientation module can fix a position the device in real time, make things convenient for staff's overall arrangement and maintenance.
3. The utility model provides a geological disasters real-time supervision early warning device based on big dipper, it has the electromagnetic shield layer to bond on the outer wall of landslide monitoring box body, and the electromagnetic shield layer is the component of being made by the cotton material of electrically conductive bubble, and electrically conductive bubble cotton has good shielding performance, when meetting the electric wave, then can reflect, absorb, provide splendid shielding effect according to the nature of its object to have high price/performance ratio.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view of the structure of the placing box of the present invention;
FIG. 3 is a schematic view of the fixing support leg structure of the present invention;
FIG. 4 is a schematic view of the structure of the stand bar body of the present invention;
FIG. 5 is a schematic view of the protective cover of the present invention;
fig. 6 is a block diagram according to the present invention.
In the figure: 1. a monitoring device body; 11. placing a box; 111. a landslide monitoring cartridge; 1111. an electromagnetic shielding layer; 112. a single chip module; 113. a WIFI module; 114. a power supply module; 115. a Beidou positioning module; 116. a storage module; 117. a signal processing module; 118. a laser ranging module; 119. a sensor receiving module; 12. a movable connecting piece; 13. maintaining the door; 14. a fixed leg; 141. a leg body; 1411. fixing a column; 1412. a fixed flange; 1413. a ground cone; 1414. a movable sleeve; 1415. a movable groove; 142. a protective cover; 1421. a shield body; 1422. a T-shaped fixture block; 1423. an unlock button; 1424. a living hinge; 1425. sealing the cover; 1426. a locking block; 15. a top plate; 16. an infrared range finder; 161. connecting blocks; 162. a connecting shaft; 163. a damping shaft; 17. a transmission line; 18. and a through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a Beidou-based geological disaster real-time monitoring and early warning device comprises a monitoring device body 1, wherein the monitoring device body 1 comprises a placing box 11, a movable connecting piece 12, a maintenance door 13, fixed support legs 14, a top plate 15, an infrared distance meter 16, a transmission line 17 and a through hole 18, the outer wall of one side of the placing box 11 is fixedly connected with the movable connecting piece 12, the other end of the movable connecting piece 12 is fixedly connected with the maintenance door 13, the four corners of the bottom end of the placing box 11 are respectively and fixedly connected with the fixed support legs 14, the top end of the placing box 11 is provided with the top plate 15, the upper end of the top plate 15 is provided with the infrared distance meter 16, two groups of connecting blocks 161 are arranged below the infrared distance meter 16, the upper ends of the connecting blocks 161 are fixedly connected with connecting shafts 162, a damping shaft 163 is arranged between the two connecting shafts 162, and the upper end of the damping shaft 163 is fixedly connected to the bottom of the infrared distance meter 16, infrared distance meter 16's end is provided with transmission line 17, through-hole 18 has been seted up to the upper end of roof 15, through-hole 18 extends to the inside of placing case 11, and transmission line 17 runs through-hole 18 setting, plate body through being provided with the receipt laser in the distant place of massif, thereby change through infrared distance meter 16 real-time supervision department distance, and then judge the condition of massif landslide, and in time report the early warning, monitoring effect is good, and can monitor the massif wholly, secondly big dipper orientation module 115 can fix a position the device in real time, make things convenient for staff's overall arrangement and maintenance.
Referring to fig. 2 and 6, a geological disaster real-time monitoring and early warning device based on beidou, a placing box 11 includes a landslide monitoring box 111, a single chip microcomputer module 112, a WIFI module 113, a power supply module 114, a beidou positioning module 115, a storage module 116, a signal processing module 117, a laser ranging module 118 and a sensor receiving module 119, an electromagnetic shielding layer 1111 is adhered on the outer wall of the landslide monitoring box 111, the electromagnetic shielding layer 1111 is a component made of conductive foam material, the conductive foam has good shielding performance, when encountering radio waves, can reflect, absorb and provide excellent shielding effect according to the property of the object, and has extremely high cost performance, the landslide monitoring box 111 is placed inside the placing box 11, the single chip microcomputer module 112 is installed at the center of the landslide monitoring box 111, the WIFI module 113 and the power supply module 114 are arranged above the single chip microcomputer module 112, the big dipper orientation module 115 is installed on the right side of single chip module 112, and storage module 116 is installed on the left side of single chip module 112, and the below of single chip module 112 is provided with signal processing module 117, laser ranging module 118 and sensor receiving module 119.
Referring to fig. 3-5, a Beidou-based geological disaster real-time monitoring and early warning device, a fixed leg 14 includes a leg body 141 and a shield 142, the leg body 141 includes a fixed column 1411, a fixed flange 1412, a ground cone 1413, a movable sleeve 1414 and a movable trough 1415, the top end of the fixed column 1411 is fixedly connected with the fixed flange 1412, the fixed flange 1412 is fixed at the bottom end of the placing box 11 by bolts, the bottom end of the fixed column 1411 is provided with the ground cone 1413, the outer wall at the bottom end of the fixed column 1411 is provided with the movable sleeve 1414, the outer wall of the movable sleeve 1414 is symmetrically provided with two sets of movable troughs 1415, the outer wall at the bottom end of the leg body 141 is movably provided with the shield 142, the shield 142 includes a shield body 1421, T-shaped fixture blocks 1422, an unlock button 1423, a movable hinge 1424, a cover 1425 and a lock block 1426, the inner wall at the upper end of the shield body 1421 is symmetrically provided with two sets of T-shaped fixture blocks 1422, and the T-shaped fixture blocks 1422 are movably clamped between the inner walls of the movable troughs 1415, the symmetry is provided with two sets of unblock button 1423 on the bottom lateral wall of shroud body 1421, the bottom fixedly connected with activity hinge 1424 of shroud body 1421, fixedly connected with closing cap 1425 on the lateral wall of activity hinge 1424, be provided with locking piece 1426 on the lateral wall of closing cap 1425, in the in-process of transportation, can be with shroud body 1421 landing to lower extreme, closing cap 1425, thereby seal ground awl 1413, avoid causing the accidental injury to the staff, improve the security in the installation.
In summary, the following steps: the utility model provides a geological disasters real-time supervision early warning device based on big dipper, be provided with movable sleeve 1414 on the outer wall of fixed column 1411 bottom, two sets of movable grooves 1415 have been seted up to the symmetry on the outer wall of movable sleeve 1414, the symmetry is provided with two sets of T type fixture block 1422 on the inner wall of shroud body 1421 upper end, and T type fixture block 1422 activity block is between the inner wall of movable groove 1415, the symmetry is provided with two sets of unblock button 1423 on the bottom lateral wall of shroud body 1421, the bottom fixedly connected with activity hinge 1424 of shroud body 1421, fixedly connected with closing cap 1425 on the lateral wall of activity hinge 1424, be provided with locking piece 1426 on the lateral wall of closing cap 1425, in the transportation, shroud body 1421 landing to the lower extreme, closing cap 1425, thereby seal ground awl 1413, avoid causing the accidental injury to the staff, improve the security in the installation; an infrared distance meter 16 is installed at the upper end of the top plate 15, a transmission line 17 is arranged at the tail end of the infrared distance meter 16, a through hole 18 is formed in the upper end of the top plate 15, the through hole 18 extends into the placing box 11, the transmission line 17 penetrates through the through hole 18, a plate body for receiving laser is arranged at a distance of a mountain body, so that the change of the distance of the place is monitored in real time through the infrared distance meter 16, the condition of landslide of the mountain body is judged, early warning is reported in time, the monitoring effect is good, the whole mountain body can be monitored, and the Beidou positioning module 115 can position the device in real time, so that the integral layout and maintenance of workers are facilitated; the outer wall of the landslide monitoring box body 111 is bonded with the electromagnetic shielding layer 1111, the electromagnetic shielding layer 1111 is a component made of conductive foam materials, the conductive foam has good shielding performance, when radio waves occur, the conductive foam can reflect and absorb the radio waves according to the properties of objects of the conductive foam, an excellent shielding effect is provided, and the landslide monitoring box body has high cost performance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a geological disasters real-time supervision early warning device based on big dipper, includes monitoring devices body (1), its characterized in that: the monitoring device body (1) comprises a placing box (11), a movable connecting piece (12), a maintenance door (13), a fixed supporting leg (14), a top plate (15), an infrared distance meter (16), a transmission line (17) and a through hole (18), fixedly connected with swing joint spare (12) on placing one side outer wall of case (11), the other end fixedly connected with maintenance door (13) of swing joint spare (12), four corners department of placing case (11) bottom is fixedly connected with fixed stabilizer blade (14) respectively, the top of placing case (11) is provided with roof (15), infrared distance meter (16) are installed to the upper end of roof (15), the end of infrared distance meter (16) is provided with transmission line (17), through-hole (18) have been seted up to the upper end of roof (15), through-hole (18) extend to the inside of placing case (11), and transmission line (17) run through-hole (18) and set up.
2. The Beidou-based geological disaster real-time monitoring and early warning device according to claim 1, is characterized in that: the placing box (11) comprises a landslide monitoring box body (111), a single-chip microcomputer module (112), a WIFI module (113), a power supply module (114), a Beidou positioning module (115), a storage module (116), a signal processing module (117), a laser ranging module (118) and a sensor receiving module (119), place the inside of case (11) and placed landslide monitoring box body (111), the center department of landslide monitoring box body (111) installs single chip module (112), the top of single chip module (112) is provided with WIFI module (113) and power module (114), big dipper orientation module (115) are installed on the right side of single chip module (112), storage module (116) are installed in the left side of single chip module (112), the below of single chip module (112) is provided with signal processing module (117), laser ranging module (118) and sensor receiving module (119).
3. The Beidou-based geological disaster real-time monitoring and early warning device according to claim 2, is characterized in that: the outer wall of the landslide monitoring box body (111) is bonded with an electromagnetic shielding layer (1111), and the electromagnetic shielding layer (1111) is a component made of a conductive foam material.
4. The Beidou-based geological disaster real-time monitoring and early warning device according to claim 1, is characterized in that: the fixed supporting leg (14) comprises a supporting leg body (141) and a protective cover (142), and the protective cover (142) is movably arranged on the outer wall of the bottom end of the supporting leg body (141).
5. The Beidou-based geological disaster real-time monitoring and early warning device according to claim 4, is characterized in that: the supporting leg body (141) comprises a fixing column (1411), a fixing flange (1412), a ground cone (1413), a movable sleeve (1414) and a movable groove (1415), the fixing flange (1412) is fixedly connected to the top end of the fixing column (1411), the fixing flange (1412) is fixed to the bottom end of the placing box (11) through bolts, the ground cone (1413) is arranged at the bottom end of the fixing column (1411), the movable sleeve (1414) is arranged on the outer wall of the bottom end of the fixing column (1411), and the two groups of movable grooves (1415) are symmetrically formed in the outer wall of the movable sleeve (1414).
6. The Beidou-based geological disaster real-time monitoring and early warning device according to claim 4, is characterized in that: the protective cover (142) comprises a protective cover body (1421), T-shaped fixture blocks (1422), unlocking buttons (1423), movable hinges (1424), a sealing cover (1425) and a locking block (1426), wherein the two groups of T-shaped fixture blocks (1422) are symmetrically arranged on the inner wall of the upper end of the protective cover body (1421), the T-shaped fixture blocks (1422) are movably clamped between the inner walls of the movable grooves (1415), the two groups of unlocking buttons (1423) are symmetrically arranged on the side wall of the bottom end of the protective cover body (1421), the movable hinges (1424) are fixedly connected to the bottom end of the protective cover body (1421), the sealing cover (1425) is fixedly connected to the side wall of the movable hinges (1424), and the locking block (1426) is arranged on the side wall of the sealing cover (1425).
7. The Beidou-based geological disaster real-time monitoring and early warning device according to claim 1, is characterized in that: the infrared distance measuring instrument is characterized in that two groups of connecting blocks (161) are arranged below the infrared distance measuring instrument (16), the upper ends of the connecting blocks (161) are fixedly connected with connecting shafts (162), damping shafts (163) are arranged between the two connecting shafts (162), and the upper ends of the damping shafts (163) are fixedly connected to the bottom of the infrared distance measuring instrument (16).
CN202120638844.4U 2021-03-29 2021-03-29 Geological disaster real-time monitoring and early warning device based on Beidou Active CN214410237U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120638844.4U CN214410237U (en) 2021-03-29 2021-03-29 Geological disaster real-time monitoring and early warning device based on Beidou

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120638844.4U CN214410237U (en) 2021-03-29 2021-03-29 Geological disaster real-time monitoring and early warning device based on Beidou

Publications (1)

Publication Number Publication Date
CN214410237U true CN214410237U (en) 2021-10-15

Family

ID=78030930

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120638844.4U Active CN214410237U (en) 2021-03-29 2021-03-29 Geological disaster real-time monitoring and early warning device based on Beidou

Country Status (1)

Country Link
CN (1) CN214410237U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114460385A (en) * 2022-04-12 2022-05-10 北京航天和兴科技股份有限公司 Electromagnetic measurement control early warning transmission system for electromagnetic shielding cabin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114460385A (en) * 2022-04-12 2022-05-10 北京航天和兴科技股份有限公司 Electromagnetic measurement control early warning transmission system for electromagnetic shielding cabin
CN114460385B (en) * 2022-04-12 2022-06-28 北京航天和兴科技股份有限公司 Electromagnetic measurement control early warning transmission system for electromagnetic shielding cabin

Similar Documents

Publication Publication Date Title
CN214410237U (en) Geological disaster real-time monitoring and early warning device based on Beidou
CN208844588U (en) A kind of highway high gradient slope on-Line Monitor Device
CN105116440A (en) Side slope rock monitoring system and method
CN113252735B (en) Water quality layered monitoring system and method for underground water in polluted site
CN111009087A (en) Mining area anti-border-crossing illegal mining monitoring and early warning method and system
CN105957569B (en) A kind of nuclear power station spent fuel reservoir monitoring device
CN209541758U (en) A kind of control point target apparatus that unmanned plane is photogrammetric
CN214703413U (en) Water quality layered monitoring system for groundwater in polluted site
CN205015487U (en) Side slope rock mass monitoring system
CN109945830A (en) A kind of bridge health safety monitoring system with two-stage Risk-warning mode
CN211603567U (en) Geological disaster rapid detector
CN205746045U (en) Underground pipe network sensing device
CN206470919U (en) Mud-rock flow three-level precaution device and debris flow early-warning system
CN207689906U (en) A kind of harmful influence vehicle temperature-sensitive early warning and online monitoring and management system based on optical fiber and GIS technology
CN205810387U (en) A kind of nuclear power station spent fuel reservoir monitoring device
CN213244200U (en) Flood-prevention drought-resisting intelligent monitoring device
CN205670176U (en) Ultra-high-tension power transmission line test warning system
CN210829400U (en) Coal mine underground water prevention and control monitoring device
CN202614250U (en) Auxiliary long-term monitoring system suitable for plateau permafrost area
CN210351669U (en) Mountain landslide monitoring and early warning system based on wireless sensor network
CN221144522U (en) Unmanned on duty's in mine safety precaution platform
CN203362096U (en) Protection device used for karst water monitoring well opening
CN202578785U (en) Stratum subsidence pre-warning system in coal mining process
CN215052622U (en) Hydraulic and hydroelectric engineering riverbed sediment scouring condition monitoring system
RU103194U1 (en) UNIVERSAL SEISMIC MODULE

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant