CN106483266B - A kind of underground electronic tag survey meter of detectable fuel gas - Google Patents

A kind of underground electronic tag survey meter of detectable fuel gas Download PDF

Info

Publication number
CN106483266B
CN106483266B CN201510530169.2A CN201510530169A CN106483266B CN 106483266 B CN106483266 B CN 106483266B CN 201510530169 A CN201510530169 A CN 201510530169A CN 106483266 B CN106483266 B CN 106483266B
Authority
CN
China
Prior art keywords
electronic tag
survey meter
fuel gas
underground electronic
underground
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
CN201510530169.2A
Other languages
Chinese (zh)
Other versions
CN106483266A (en
Inventor
陈秋雄
陈运文
陆涵
游咏
安成名
陈进
向亦萌
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.)
Shenzhen Yideng Technology Co ltd
Shenzhen Gas Corp Ltd
Original Assignee
Shenzhen Yaozhi Technology Development Co Ltd
Shenzhen Gas Corp 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 Shenzhen Yaozhi Technology Development Co Ltd, Shenzhen Gas Corp Ltd filed Critical Shenzhen Yaozhi Technology Development Co Ltd
Priority to CN201510530169.2A priority Critical patent/CN106483266B/en
Publication of CN106483266A publication Critical patent/CN106483266A/en
Application granted granted Critical
Publication of CN106483266B publication Critical patent/CN106483266B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)

Abstract

The invention discloses a kind of underground electronic tag survey meters of detectable fuel gas, fuel gas detection module and survey meter ontology including the concentration for detecting fuel gas.It, can not only Underground electronic tag it follows that survey meter provided by the invention, the combustable gas concentration in ambient enviroment can also be detected, so that can detect the combustable gas concentration in ambient enviroment while Underground electronic tag, improving the efficiency of pipe detection.

Description

A kind of underground electronic tag survey meter of detectable fuel gas
Technical field
The present invention relates to field of detecting more particularly to a kind of underground electronic tag survey meters of detectable fuel gas.
Background technique
The problem of gas company is frequently encountered fuel gas pipeline leakage during operation, gas leakage can give gas company Huge economic loss is caused, some leakages, which can even set off an explosion, threatens the safety of life and property of the people, therefore, to combustion gas It is very necessary work that pipe network, which carries out regular visit,.In inspection, usually first arrive at the destination near, with underground electronics mark The position for signing survey meter Underground electronic tag, the position of gas pipeline is determined by the position of underground electronic tag, then Gas leakage has been detected whether with hand-held combustion gas survey meter.In practice, underground electronic tag survey meter need to be used alternatingly It cooperates simultaneously with combustion gas survey meter, or two people of needs, inspection could be completed, time-consuming and laborious, working efficiency is low.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
In view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of underground of detectable fuel gas electricity Subtab survey meter detects the combustable gas concentration in ambient enviroment, improves pipeline while Underground electronic tag The efficiency of detection.
Technical scheme is as follows:
A kind of underground electronic tag survey meter of detectable fuel gas, including the concentration for detecting fuel gas can Fire gas detection module and survey meter ontology.
In the underground electronic tag survey meter of the detectable fuel gas, the fuel gas detection module includes can Gas detecting instrument is fired, the combustible gas detector includes a flexible feeler lever, and the end of the flexibility feeler lever is provided with Gao Min Gas sensing hole.
In the underground electronic tag survey meter of the detectable fuel gas, the survey meter further include:
Exploring antenna, for generating magnetic field;
On the face vertical with the central axes of exploring antenna, multiple hall sensings are evenly provided with by the center of circle of central axes Device;
Processing module, the magnetic induction intensity for being detected according to multiple Hall sensors, judges underground electronic tag Position.
In the underground electronic tag survey meter of the detectable fuel gas, the survey meter further includes display module, The display module is used to explicitly descend the position of electronic tag.
In the underground electronic tag survey meter of the detectable fuel gas, the processing module and multiple hall sensings Device connection, the processing module are specifically used for the magnetic induction intensity detected according to multiple Hall sensors, compare and obtain detection The most weak Hall sensor of magnetic induction intensity, the orientation correspondence where the most weak Hall sensor of magnetic induction intensity is being shown The position of underground electronic tag is shown as in module.
In the underground electronic tag survey meter of the detectable fuel gas, the exploring antenna is coil antenna.
In the underground electronic tag survey meter of the detectable fuel gas, the quantity of the Hall sensor is 8.
In the underground electronic tag survey meter of the detectable fuel gas, the survey meter bottom is provided with telescopic rod Be set on the telescopic rod, can be along the quill that telescopic rod long axis direction moves.
The present invention provides a kind of underground electronic tag survey meter of detectable fuel gas, including for detecting fuel gas Concentration fuel gas detection module and survey meter ontology.It follows that survey meter provided by the invention, can not only detect ground Lower electronic tag, moreover it is possible to the combustable gas concentration in ambient enviroment is detected, so that can examine while Underground electronic tag The combustable gas concentration in ambient enviroment is surveyed, the efficiency of pipe detection is improved.
Detailed description of the invention
Fig. 1 is the perspective view of the underground electronic tag survey meter of detectable fuel gas of the present invention.
Fig. 2 is the structural block diagram of the underground electronic tag survey meter of detectable fuel gas of the present invention.
Fig. 3 is the positioning principle schematic diagram of the underground electronic tag survey meter of detectable fuel gas of the present invention.
Fig. 4 be detectable fuel gas of the present invention underground electronic tag survey meter in, Hall sensor relative to The distribution map of exploring antenna.
Fig. 5 is the perspective view of quill in the underground electronic tag survey meter of detectable fuel gas of the present invention.
Fig. 6 is the office of movable buckle structure in the underground electronic tag survey meter of detectable fuel gas of the present invention Portion's enlarged drawing.
Specific embodiment
The present invention provides a kind of underground electronic tag survey meter of detectable fuel gas, to make the purpose of the present invention, skill Art scheme and effect are clearer, clear, and the present invention is described in more detail below.It should be appreciated that tool described herein Body embodiment is only used to explain the present invention, is not intended to limit the present invention.
Referring to Figure 1 and Fig. 2, the underground electronic tag survey meter of detectable fuel gas provided by the invention, including with In the fuel gas detection module 20 and survey meter ontology 10 of the concentration of detection fuel gas.
It, can not only Underground electronic tag it follows that survey meter provided by the invention, moreover it is possible to detect in ambient enviroment Combustable gas concentration can detect the combustable gas concentration in ambient enviroment, mention so that while Underground electronic tag The high efficiency of pipe detection.
Further, the fuel gas detection module 20 includes combustible gas detector, the combustible gas detector Including a flexible feeler lever, the end of the flexibility feeler lever is provided with high quick gas sensing hole.Flexible feeler lever is set, so that described The combustable gas concentration in the detectable each corner in scene of underground electronic tag survey meter, it is very convenient.The fuel gas includes Methane, natural gas, ammonia, hydrogen, coal gas, propane, gasoline, coolant, ethyl alcohol, oxide, hydrogen sulfide, paint, solvent or diluent, industry are molten Other organic liquid steam such as agent, gaseous fuel.The combustible gas detector is inhaled using pump or diffusion way sucks gas Sensor detection, the flexibility feeler lever can be lengthened with hose as needed.
The range of the combustible gas detector is 0-10000PPM.
The underground electronic tag survey meter further includes display module 60, and the display module 60 is for showing fuel gas The concentration for the fuel gas that detection module 20 detects, real-time display gas concentration reach the ratio of full scale.The survey meter The USB interface for charging and transmitting data is provided on ontology 10.
The underground electronic tag survey meter further include exploring antenna 30, multiple Hall sensors (magnetic field sensor) 40, The processing module 50 being connect with multiple Hall sensors 40.
Also referring to Fig. 3 and Fig. 4, the exploring antenna 30, for generating magnetic field, in the magnetic field of generation, magnetic induction line is such as Shown in Fig. 3 dotted arrow, a magnetic induction area is formed.The exploring antenna 30 is coil antenna, after coil antenna is powered, is generated Magnetic field.
Multiple Hall sensors 40 are uniform by the center of circle of central axes on the face vertical with the central axes of exploring antenna 30 Setting.Since multiple Hall sensors 40 are uniformly arranged, centered on 30 central axes of exploring antenna, on the basis of the positive north, each Hall sensor 40 relative to exploring antenna 30 central axes all can shape in an angle, when the magnetic for thering is Hall sensor to detect When induction exception, underground electronic tag 70 can be positioned according to the Hall sensor, very accurately and conveniently.And And the quantity of Hall sensor 40 is more, it is more accurate to position.Preferably, the quantity of the Hall sensor 40 is 12.And this In embodiment, as shown in figure 4, the quantity of the Hall sensor is 8,8 Hall sensors respectively indicate eight orientation: north (preceding), southern (rear), western (left side) and east (right side).
Preferably, one end of exploring antenna 30 is arranged in the Hall sensor 40;Where multiple Hall sensors 40 Face keeps certain distance with one end of exploring antenna 30.It is provided with the volume for being conducive to save underground electronic tag survey meter in this way, Improve detection accuracy.The certain distance can according to exploring antenna 30 formed magnetic field intensity and Hall sensor 40 between Depending on distance.
The processing module 50, the magnetic induction intensity for being detected according to multiple Hall sensors 40 judge underground electricity The position of subtab 70.Specifically, the magnetic induction that the processing module 50 is used to be detected according to multiple Hall sensors 40 is strong Degree, compares the Hall sensor for showing that the magnetic induction intensity of detection is most weak, will be where the most weak Hall sensor of magnetic induction intensity The corresponding position that underground electronic tag 70 is shown as in display module 60 in orientation.Since underground electronic tag 70 influences whether The magnetic induction intensity in magnetic induction area, therefore the magnetic induction intensity meeting for closely descending the Hall sensor of 70 side of electronic tag to sense It dies down, 50 need of the processing module compare the orientation for obtaining magnetic induction by force where most weak Hall sensor, you can learn that ground The position of lower electronic tag, it is very convenient and practical.
The display module 60 is also used to the position for the underground electronic tag that Display processing module 50 obtains, specifically, institute It states display module 60 and is stored with electronic map, the display module 60 explicitly descends the position of electronic tag on the electronic map.
Therefore, the underground electronic tag survey meter of detectable fuel gas provided by the invention, by vertical sounding day On the face of line central axes, multiple Hall sensors are uniformly set as the center of circle using central axes.Electromagnetic induction principle is taken full advantage of, Processing module need to only compare the orientation for obtaining magnetic induction by force where most weak Hall sensor, you can learn that underground electronic tag Position, in 2 ~ 3 meters of underground electronic tag plan range effect it is very good, realize automatic identification underground electronic tag, Locating speed and precision are improved, all around changes position without hand-held survey meter to detect.Carrying out underground gas ductwork When leaking inspection or really leaking, the present invention can be by the positioning function of underground electronic tag survey meter, in gas pipeline Surface check whether there is gas leakage, it is very practical and convenient.
Further, the processing module 50 includes reference cell, voltage comparison unit and control unit.
The reference cell, for obtaining direct north, on the basis of direct north.
The voltage comparison unit is obtained for comparing the voltage of the Hall sensor connecting with processing module 50 output The minimum Hall sensor of output voltage.The voltage of Hall sensor detection is lower, illustrates that magnetic induction intensity is weaker.
Described control unit, for the position according to pre-set each Hall sensor relative to benchmark (direct north) Relationship is set, specifically, the angle according to pre-set each Hall sensor relative to benchmark (direct north), obtains output The angle of voltage minimum Hall sensor and benchmark, control display module are corresponding in electronics by the position of underground electronic tag It is shown on map.
It follows that the processing module need to only compare the Hall sensor output being arranged in each orientation of exploring antenna Voltage be the position that can recognize underground electronic tag, it is simple and practical without complicated circuit design or logical operation, it is described Processing module can be made of analog circuit, it is of course also possible to be MCU, the present invention is not construed as limiting.
Please continue to refer to Fig. 1,10 bottom of survey meter ontology is provided with telescopic rod 80 and is set in the telescopic rod 80 It above, can be along the quill 90 that 80 long axis direction of telescopic rod moves.Along 80 long axis direction of telescopic rod, that is, four-headed arrow institute in Fig. 1 The direction of finger.
, only need to be fixed by quill 90 in Underground electronic tag, 80 pull-up of telescopic rod can be made into survey meter It is elongated, survey meter can be made to shorten the pushing of telescopic rod 80, so that the survey meter can freely stretch, change length, be not necessarily to Carry out hoisting depth by other objects, greatly improves the efficiency of measurement work.
Further, please refer to fig. 5, being provided with pre- fixed length on two non-conterminous side walls of the quill 90 The guide groove 910 of degree, the 910 boot activity sleeve 90 of guide groove are moved along 80 long axis direction of telescopic rod.In other words, quill Guide groove 910 is provided on the side wall of 90 oncoming lanes, two guide grooves 910 are symmetrical arranged.The guide groove 910 is the hole of strip, is risen To the effect of guide rail.The predetermined length is configured as needed, it is preferred that the predetermined length is 15cm.In this way, surveying When amount, telescopic rod 80 is depressed into lowest point, measurement is primary, then that telescopic rod 80 is past first close to earth's surface by survey meter bottom down It above mentions to highest point and measuring again once, depth is calculated plus this constant of 15cm according to the numerical value that this is tested twice.
In other embodiments, the guide groove 910 of predetermined length is provided on four side walls of the quill 90.Setting Four guide grooves 910 are conducive to improve stability of the telescopic rod 80 in sliding.
Correspondingly, referring to Figure 6 together, being provided with cylindrical bump on two non-conterminous side walls of the telescopic rod 80 810, the cylindrical bump 810 is placed in guide groove 910, and the cylindrical bump 810 is adapted to guide groove 910.In this way, passing through circle The cooperation of columnar projections 810 and guide groove 910, so that telescopic rod 80 can slide up and down in quill 90.
Further, the both ends of the guide groove 910 are provided with the movable buckle for engaging the cylindrical bump 810 Structure A.By movable buckle structure A, cylindrical bump 810 is allowed to be fixed on the both ends of guide groove 910, due to both ends spacing It is fixed as 15cm, improves the accuracy of measurement.
Please continue to refer to Fig. 6, the movable buckle structure A includes the lug boss 912 being arranged on guide groove side wall 911 and sets The lug boss 912 set on guide groove end, the arcuate apertures 913 for accommodating cylindrical bump 810, guide groove two side walls 911 will Cylindrical bump 810 is fastened in the arcuate apertures 913.That is, only cylindrical bump 810 need to be squeezed into arcuate apertures from guide groove 910 , can be fixed by telescopic rod 80 and quill 90 in 913, it is simple, convenient and practical.The lug boss 912 includes one outer Convex arc surface.
Referring to Fig. 1, the bottom of the quill 90 is provided with pedal 920, the setting of pedal 920 allows user Quill 90 is fixed with foot, is stretched telescopic rod 80 with hand, it is very convenient.Further, the top setting of the pedal 920 There is anti-skid bulge, is conducive to improve stability.
Further, the quill 90 is plastic adjustable sleeve, using plastic material, avoid interference detection instrument into Row detection.
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can With improvement or transformation based on the above description, all these modifications and variations all should belong to the guarantor of appended claims of the present invention Protect range.

Claims (5)

1. a kind of underground electronic tag survey meter of detectable fuel gas, which is characterized in that including for detecting fuel gas Concentration fuel gas detection module and survey meter ontology;
The survey meter further include:
Exploring antenna, for generating magnetic field;
On the face vertical with the central axes of exploring antenna, multiple Hall sensors are evenly provided with by the center of circle of central axes;
Processing module, the magnetic induction intensity for being detected according to multiple Hall sensors, judges the position of underground electronic tag;
Display module, the display module are used to explicitly descend the position of electronic tag;
The processing module is connect with multiple Hall sensors, and the processing module is specifically used for being examined according to multiple Hall sensors The magnetic induction intensity measured compares the Hall sensor for showing that the magnetic induction intensity of detection is most weak, and magnetic induction intensity is most weak The corresponding position that underground electronic tag is shown as in display module in orientation where Hall sensor.
2. the underground electronic tag survey meter of detectable fuel gas according to claim 1, which is characterized in that it is described can Firing gas detection module includes combustible gas detector, and the combustible gas detector includes a flexible feeler lever, the flexibility The end of feeler lever is provided with high quick gas sensing hole.
3. the underground electronic tag survey meter of detectable fuel gas according to claim 1, which is characterized in that the spy Observation line is coil antenna.
4. the underground electronic tag survey meter of detectable fuel gas according to claim 3, which is characterized in that it is described suddenly The quantity of your sensor is 8.
5. the underground electronic tag survey meter of detectable fuel gas according to claim 4, which is characterized in that the spy Survey instrument bottom be provided with telescopic rod and be set on the telescopic rod, can be along the quill that telescopic rod long axis direction moves.
CN201510530169.2A 2015-08-26 2015-08-26 A kind of underground electronic tag survey meter of detectable fuel gas Active CN106483266B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510530169.2A CN106483266B (en) 2015-08-26 2015-08-26 A kind of underground electronic tag survey meter of detectable fuel gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510530169.2A CN106483266B (en) 2015-08-26 2015-08-26 A kind of underground electronic tag survey meter of detectable fuel gas

Publications (2)

Publication Number Publication Date
CN106483266A CN106483266A (en) 2017-03-08
CN106483266B true CN106483266B (en) 2019-02-12

Family

ID=58233671

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510530169.2A Active CN106483266B (en) 2015-08-26 2015-08-26 A kind of underground electronic tag survey meter of detectable fuel gas

Country Status (1)

Country Link
CN (1) CN106483266B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109409146A (en) * 2018-09-27 2019-03-01 北京计算机技术及应用研究所 A kind of method and system using RFID tags road
CN113762448B (en) * 2020-06-05 2024-08-02 杭州海康威视数字技术股份有限公司 Electronic tag and electronic tag system
CN113671146B (en) * 2021-10-22 2022-03-18 深圳市弘业自动化技术有限公司 Underground detector capable of detecting combustible gas

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057844A (en) * 1990-03-19 1991-10-15 Rothstein Mark B Insulated underground antenna and method for utilizing same
DE4443901A1 (en) * 1994-12-09 1996-06-13 Kellermann G Kelmaplast Detection strip for location of non-metallic buried gas-pipes
CN1142095A (en) * 1995-08-01 1997-02-05 株式会社立普罗 Location marking system and marker for use in system
CN1210256A (en) * 1997-08-21 1999-03-10 Abb研究有限公司 Optical high temperature meter for gas turbine
CN1318174A (en) * 1998-07-20 2001-10-17 格姆普拉斯塔格澳大利亚有限公司 Metal screened electronic labelling system
CN1573358A (en) * 2003-06-17 2005-02-02 利宇Tec株式会社 Magnetic mark detector for detecting location of buried objects utilizing magnetic mark
CN101501532A (en) * 2006-06-02 2009-08-05 普利茅斯法国公司 Detection system suitable for identifying and tracking buried pipes or others bodies buried in the ground or embedded in civil engineering works
CN201681164U (en) * 2010-04-13 2010-12-22 同济大学 Detector for metal pipeline in front of pipe roof
CN202064677U (en) * 2011-04-14 2011-12-07 大庆中石油昆仑燃气有限公司 Fuel gas sign pile with detection function
CN102449506A (en) * 2009-05-25 2012-05-09 弗劳恩霍弗应用技术研究院 Device and method for magnetic positioning
CN202255774U (en) * 2011-10-28 2012-05-30 宁夏电力公司宁东供电局 Handheld SF6 gas leakage detector
CN102998708A (en) * 2011-05-25 2013-03-27 利宇Tec株式会社 Apparatus and method for detecting location of underground facility
CN103235009A (en) * 2013-05-09 2013-08-07 济南市长清计算机应用公司 Portable combustible gas detector
CN104154856A (en) * 2013-05-13 2014-11-19 雷迪有限公司 Electronic marker locator systems and methods
CN204302508U (en) * 2014-12-14 2015-04-29 哈尔滨市三和佳美科技发展有限公司 Hall electromagnetic position detector
CN104655718A (en) * 2014-12-30 2015-05-27 河南省锅炉压力容器安全检测研究院 Electromagnetic inspection method based on hall sensor array and electromagnetic inspection system based on hall sensor array

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0712955A (en) * 1993-06-29 1995-01-17 Sekisui Chem Co Ltd Buried pipe labeling system
JPH0712956A (en) * 1993-06-29 1995-01-17 Sekisui Chem Co Ltd Buried pipe labeling system

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5057844A (en) * 1990-03-19 1991-10-15 Rothstein Mark B Insulated underground antenna and method for utilizing same
DE4443901A1 (en) * 1994-12-09 1996-06-13 Kellermann G Kelmaplast Detection strip for location of non-metallic buried gas-pipes
CN1142095A (en) * 1995-08-01 1997-02-05 株式会社立普罗 Location marking system and marker for use in system
CN1210256A (en) * 1997-08-21 1999-03-10 Abb研究有限公司 Optical high temperature meter for gas turbine
CN1318174A (en) * 1998-07-20 2001-10-17 格姆普拉斯塔格澳大利亚有限公司 Metal screened electronic labelling system
CN1573358A (en) * 2003-06-17 2005-02-02 利宇Tec株式会社 Magnetic mark detector for detecting location of buried objects utilizing magnetic mark
CN101501532A (en) * 2006-06-02 2009-08-05 普利茅斯法国公司 Detection system suitable for identifying and tracking buried pipes or others bodies buried in the ground or embedded in civil engineering works
CN102449506A (en) * 2009-05-25 2012-05-09 弗劳恩霍弗应用技术研究院 Device and method for magnetic positioning
CN201681164U (en) * 2010-04-13 2010-12-22 同济大学 Detector for metal pipeline in front of pipe roof
CN202064677U (en) * 2011-04-14 2011-12-07 大庆中石油昆仑燃气有限公司 Fuel gas sign pile with detection function
CN102998708A (en) * 2011-05-25 2013-03-27 利宇Tec株式会社 Apparatus and method for detecting location of underground facility
CN202255774U (en) * 2011-10-28 2012-05-30 宁夏电力公司宁东供电局 Handheld SF6 gas leakage detector
CN103235009A (en) * 2013-05-09 2013-08-07 济南市长清计算机应用公司 Portable combustible gas detector
CN104154856A (en) * 2013-05-13 2014-11-19 雷迪有限公司 Electronic marker locator systems and methods
CN204302508U (en) * 2014-12-14 2015-04-29 哈尔滨市三和佳美科技发展有限公司 Hall electromagnetic position detector
CN104655718A (en) * 2014-12-30 2015-05-27 河南省锅炉压力容器安全检测研究院 Electromagnetic inspection method based on hall sensor array and electromagnetic inspection system based on hall sensor array

Also Published As

Publication number Publication date
CN106483266A (en) 2017-03-08

Similar Documents

Publication Publication Date Title
CN106483266B (en) A kind of underground electronic tag survey meter of detectable fuel gas
CN105043381A (en) Magnetic nail-based positioning method
CN106091958A (en) The method measuring circular arc works radius based on arc height chord length method
CN108151766A (en) Localization method, magnetic nail positioning navigation error correcting method and the positioning device of magnetic nail
CN106483583B (en) Positioning system, method and the electronic tag survey meter of electronic tag
CN205449052U (en) Device for measuring building inclination angle by laser
CN207197386U (en) A kind of slip digital display calliper for being used to measure gap of the shield tail
CN205748193U (en) A kind of portable deck-siding survey tool
CN205448987U (en) Structural distortion who utilizes laser sensors measures and collection system
CN103398650A (en) Ellipticity measuring instrument for tube body and measurement method thereof
CN205300541U (en) Welded joint size and barrel circularity testing instruments
CN205749367U (en) pH value measuring instrument
CN206469847U (en) A kind of laser ranging and the portable instrument for surveying area
CN206470284U (en) The measurement apparatus of gas in pipelines flow velocity
CN106488178B (en) A kind of underground electronic tag survey meter with camera
CN204346329U (en) A kind of height measuring device of surveying instrument
CN106483566B (en) Positioning system, method and the underground electronic tag survey meter of underground electronic tag
CN104192166B (en) Rail attitude measurement method based on earth magnetism sensing and device
CN203837703U (en) Portable practical slope measurer
CN109405723B (en) Pipe straightness accuracy measurement detection device
CN206459589U (en) Determine the device in pipeline center section
CN208736393U (en) A kind of portable architectural engineering degree of plainness for wall surface detection device
CN201764963U (en) Horizontal ruler for measuring arbitrary angle
CN205719966U (en) A kind of measuring device for liquid refractive index based on optical grating diffraction
CN106761687A (en) Liquid level detecting devices in a kind of well

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20240613

Address after: 518049 Deep Burning Building, Kangbei Road, Futian District, Shenzhen City, Guangdong Province

Patentee after: SHENZHEN GAS Corp.,Ltd.

Country or region after: China

Patentee after: Shenzhen Yideng Technology Co.,Ltd.

Address before: 518049 Deep Burning Building, Kangbei Road, Futian District, Shenzhen City, Guangdong Province

Patentee before: SHENZHEN GAS Corp.,Ltd.

Country or region before: China

Patentee before: SHENZHEN YAOZHI TECHNOLOGY DEVELOPMENT Co.,Ltd.

TR01 Transfer of patent right