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.
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.